Machine for mechanical handling of bulk products, in particular element of the dental prosthesis by the automatic copy

 

The invention relates to medicine and can be used for machining at least one of a volumetric object, namely the element of the dental prosthesis by the automatic backup. The machine contains abrasive disc (4) and drive means (5) to bring into rotation; means (6) fixing the workpiece (7), which is machined, and means (12, 16, 17) to bring them into rotation; means (8) fixing model (9) and means (12, 16, 17) to bring them into rotation; copy probe (10) is made with the possibility of forced contact with the outer surface models, and tools(11, 13, 14, 15, 16) relative displacement between the means of fixation of the workpiece and the abrasive disc (4) and between the means of fixing the model and copy probe, with means for moving allow abrasive disk and copy the probe to be in contact respectively with the workpiece and with the model; and control means drive the rotation of the abrasive disk and means of the rotation drive means of fixation of the model, as well as means of translational movement, the amount of translational movement contain a movable carriage (13), kidstv fixation model. The technical result is the improvement of the ergonomic properties of the machine and reducing the cost of operation of the machine. 18 C.p. f-crystals, 4 Il.

The technical field to which the invention relates

The present invention relates to machines, which allows machining by material removal in the process of copying the sample or model of the product. In a narrower aspect, the invention is applicable in the medical field, in particular in dentistry, for the manufacture of ceramic products intended for full or partial dentures. More specifically the invention relates to machines that contain: a tool for machining, having an axis of symmetry and having at least one degree of freedom of rotation around the axis of symmetry, means for bringing the rotation of the tool for machining around its symmetry axis, means fixing the workpiece which is subjected to the specified machining with at least one rotational degree of freedom, the means of bringing the rotation of the means of fixation of the workpiece, means fixing the model having at least one rotational degree of freedom, scta with the outer surface of the model, means of relative displacement, on the one hand, between the means of fixation of the workpiece and the tool for machining, and on the other hand, between the said means of fixing the model and the specified copy probe, with means for moving allow the tool for machining and imaging probe to be in contact respectively with the specified workpiece and the specified model.

The level of technology

From U.S. patent No. 5135393 known method and device for the manufacture of bulk products by copying in dentistry, namely for the production of dental prostheses. Applied to this machine has eight axes, and moving the moving parts of the machine is done manually by the operator except for the rotation of the machining tool, which is driven by the engine. In particular, the machine contains the first carriage, which carries rigidly interconnected copy probe and a support tool. Their axes parallel to each other and perpendicular to the axis of translational movement of a stylus gauge and support tool. This first carriage has a freedom of rotation and translational movement along the axes sootvetstvenno probe and instrument. This first carriage is connected with the elements of the power circuit and in the process moved by the operator with a focus in the second carriage, which has freedom of rotation and carries the product model and the workpiece mounted on it with the possibility of free rotation. Thus, under the action of pressure and produced by operator movement of copy probe follows the model surface and the tool produces a corresponding machining of the workpiece. The model and the workpiece are connected with the provision of joint rotation so that when the operator rotates the model by hand, harvesting repeats this movement of rotation, while the other hand of the operator sends a copy of the probe on the surface of the model. This machine has a complex structure, is cumbersome due to the many degrees of freedom and difficult to operate, as the accuracy of the copy is a function of operator actions.

From international patent application WO 96/05782 known machine of the specified type that contains diamond tools for machining, driven high-speed turbine, copy probe installed on the same component, machine, tool, instrumetal, which strengthened in line with the workpiece. This machine allows you to precisely reproduce the model, but it contains heavy, bulky and expensive mechanism, due to the high speeds of rotation of the tool. In addition, the tool of small diameter, providing up small parts at high speeds of rotation are subject to wear, which increases the cost of operation of the machine.

The invention

The problem to which the present invention is directed, is to eliminate these disadvantages and to create a machine of the specified type that has additional benefits.

In accordance with the invention the solution of this problem is achieved by creating a machine that allows machining at least one volume items, namely item prosthesis, by automatically copying and contains at least:

tool for machining, having an axis of symmetry and having at least one degree of freedom of rotation around the axis of symmetry,

drive means for bringing the rotation of the specified tool for machining around igoudala, at least one rotational degree of freedom,

means of enforcing the rotation of the specified means of fixation of the workpiece,

means for recording the models with the at least one rotational degree of freedom,

means of enforcing the rotation of these funds fixation models,

copy probe made with the possibility of contact with the outer surface of the model,

means of relative displacement, on the one hand, between the means of fixation of the workpiece and the tool for machining, and on the other hand, between the said means of fixing the model and the specified copy probe, with means for moving allow the tool for machining and imaging probe to be in contact respectively with the specified workpiece and with the specified model,

funds management and control of these funds to bring the rotation of the tool for machining, these funds bring the rotation of the means of fixation of the model and these funds move.

When this machine according to the invention is characterized by the fact that the specified tool for machining is executed in the form abrazivnogo rotation specified means of fixation of the workpiece and these means of fixation model, moreover, the specified movable carriage has at least two degrees of freedom.

The abrasive disk, which can significantly reduce the speed of rotation of the tool for machining, and execution of navigation, which allow you to move the workpiece and the model, and not a tool for machining, provide a significant reduction in weight and cost of the machine.

According to one of the distinctive features of the invention specified movable carriage has a rotational degree of freedom and the translational degree of freedom, and these means for moving includes the tools for implementation of the translational movement and the means of implementation of rotation specified by the mobile carriage.

According to another distinctive features of the machine according to the invention includes a rigid support, said funds to the implementation of the translational movement of specified movable carriage containing the first motor is rigidly associated with the specified rigid support, these tools bring the rotation of the specified means of fixation of the workpiece and these funds bring the rotation of the specified means of fixation models contain a second motor associated with econosto free rotation of the output shaft of the specified second motor. While specified rigid support acts as a guide, the rotational and translational movement of the output shaft.

According to the following distinctive features of these tools drive the rotation specified by the mobile carriage around the output shaft of the specified second motor includes a friction force produced by the rotation of these means of fixation of the workpiece and the said means of fixing model.

According to the following distinctive features of the invention these means of fixation of the workpiece and these means of fixation models are rigidly connected to each other, and their axes of rotation are located on the same line.

Another distinctive feature of the invention is that the axis of rotation of the specified abrasive disk parallel to the axes of rotation of these funds to the fixing of the workpiece and these funds fixation model, and the said rigid support includes a flat wall perpendicular to the specified axis of rotation of the abrasive disk and provides the interface between the Department of machining and engine room.

According to the following distinctive features of the axis of rotation of the specified abrasive disk and the output shaft ukazannoj is, perpendicularly axes of rotation, facilitates the installation of bearing supports, and the use of identical bearing reduces the cost of manufacture.

According to the following distinctive features specified copy probe is rigidly fixed on the specified hard pole in order by his abrasive wear due to friction in the interaction with the model to compensate for wear of the specified abrasive disk. Due to this, the accuracy of the copy does not depend on the tool wear.

According to the following distinctive features of the machine according to the invention further comprises means for radial displacement of the specified copy of the probe, allowing to establish the spatial correlation given up item prosthesis in relation to the model in the plane perpendicular to the axis of rotation of the specified model.

This feature allows you to change the radial parameter of the copy without changing the axial setting up, which is particularly useful in the manufacture of items dentures in order to create the space for bonding or to compensate for errors that may complicate the fitting, and not to violate the longitudinal parovarnye probe has a thickness greater than the thickness specified abrasive disk to increase the longitudinal dimension of the element of the prosthesis relative to the longitudinal size of the specified model.

In addition to the compensation plane errors and errors from vibration of the disk, this feature allows you to compensate for the removal of material, which is produced in the grinding process of the finished product.

According to the following distinctive features of these means of fixation of the workpiece and means of fixation models are interconnected by means of screws and nuts. This means fixing the workpiece rigidly connected with one of the interacting elements of the specified pair, and these means of fixation models are rigidly connected to the other of the interacting elements of the specified pair.

This feature improves the ergonomic properties of the machine due to the fact that the means of fixation of the workpiece is connected with the means of fixing the model using the screws and nuts. The operator can easily connect the workpiece and the model, holding each of the elements in one hand. When disassembling it does the same two hands rotating in the reverse direction, separating the finished product from the model. It does not require fixing to the axis of rotation of one of the elements. In addition, this feature allows you to eliminate errors due to the presence of free motion between the workpiece and the model.

According to the work after the machining by the perception of certain provisions of the said movable carriage. After machining copy probe no longer supports the model, the movable carriage is shifted to the symmetry axis of the abrasive disk, and means to automatically stop can operate at this offset.

According to the following distinctive features of the machine according to the invention contains a disk, made entirely or partially abrasive on its opposite sides, and these two opposite sides converge toward the periphery of the disc. The drive is on the surface essentially in the direction opposite to the direction of translational movement of the mobile carriage. The coup abrasive disk with one of the worn surface allows to double the life of the drive.

According to the following distinctive features of the machine according to the invention includes means for regulation of these funds moving force transmitted abrasive disk on the workpiece. This feature allows you to optimize the time of machining.

Further, the machine according to the invention includes means for lubricating the specified abrasive disc by splashing. This feature avoids the use of pump-forced circulation to supply meniu includes means for reversing the direction of rotation specified abrasive disk. This ensures the ability to use two opposite sides of the abrasive grains of the disk, which reduces the cost of operation of the machine.

According to the following distinctive features of the machine according to the invention includes means for automatically draining the specified movable carriage at the end of machining. This allows us to improve the ergonomic features of the machine, so as to automatically retract the movable carriage upon completion of the machining opens easier access for removal of processed products and models.

According to another distinctive features of the machine according to the invention contains a centering template that allows you to hold the specified workpiece on these tools, fixing the workpiece and the fixation of the specified model on these tools, fixing the model, such as an element of the dental prosthesis, in order to ensure the integration model in the total harvest. This feature allows you to resolve cases when you want to process large body mounted relative to the model so that it may not be sufficient volume of material for processing in accordance with the model.

According to the following distinctive Ocoee than one corresponding end.

List of figures

Non-limiting examples of implementation of the present invention, additional features and advantages will be described in more detail below with reference to the accompanying drawings.

Fig.1 depicts the top view in section along the line II-II in Fig.2 machine in accordance with the invention, which allows machining at least one volume of the product, namely the element of the dental prosthesis by the automatic copy.

Fig.2 depicts a machine on view in section along the line I-I in Fig.1,

Fig.3 represents on an enlarged scale one of the nodes of the machine according to Fig.1.

Fig.4 depicts an example execution of the centering template for the machine of Fig.1.

Information confirming the possibility of carrying out the invention

Presented on Fig.1 machine allows machining at least one volume of the product, namely the element of the dental prosthesis by the automatic backup. The machine contains:

the abrasive disk 4, having an axis of symmetry 18 and having at least one degree of freedom of rotation around the axis of symmetry 18, drive means 5 to bring the abrasive disk 4 in which the processing, having at least one rotational degree of freedom, and means 12, 16, 17 bringing into rotation means 6 fixing the workpiece;

means 8 fixation models 9, having at least one rotational degree of freedom, and means 12, 16, 17 bringing into rotation means 8 of fixing model.

copy probe 10 made with the possibility of forced contact with the outer surface 9, and means 11, 13, 14, 15, 16 relative displacement, on the one hand, means 6 fixing the workpiece 7 and the abrasive disk 4, and on the other hand, means 8 fixation models 9 and copy of the probe 10, with means to allow movement of the abrasive disk 4 and the imaging probe 10 to be in contact respectively with the workpiece and with the model;

controls and control means 5 bring the rotation of the abrasive disk 4 and the means 12 of bringing into rotation means 8 fixing model 9, and means 11 of the progressive movement.

Means for moving include a movable carriage 13 on which is mounted with freedom of rotation means 6 fixing the workpiece 7 and the means 8 fixation models 9. Movable carriage 13 preferably has two degrees of freedom, namely vrao move and drive means rotate the movable carriage 13.

Presented on Fig.1, the machine also includes a rigid support 3. Tool carriage drive 13 contain the first engine 11, is rigidly linked to the rigid support 3. Means of enforcing the rotation means 6 fixing the workpiece 7 and the means 8 fixing model 9 contain the second motor 12 associated with the first motor 11 with a pair of screw-nut 14, 15. Movable carriage 13 can freely rotate around the output shaft 16 of the second motor, whereby the output shaft 16 is mounted for rotation and longitudinal movement in the bearing support 21, rigidly attached to the rigid support 3, as will be described in more detail further.

The axis 18 of rotation of the abrasive disk 4 parallel axes of rotation means 6 fixing the workpiece 7 and the means 8 fixation models 9. Rigid support 3 is preferably in the form of a flat wall, which is perpendicular to the axis 18 of rotation of the abrasive disk 4 and allows you to divide the compartment 31 of machining and engine compartment 32. As shown in Fig.1, the axis 18 of rotation of the abrasive disk 4 is installed in the bearing support 20, which is preferably identical to the bearing support 21 of the output shaft 16 of the second motor 12. The same implementation of the ri production.

In an optimal embodiment, the entirety of constructive means of the machine according to the invention placed in a protective housing 30, which performs the security functions of these structural funds, receiver for lubricating fluid mechanical process, as will be described later, and the aesthetic appearance of the machine shown in Fig.1 and 2. Rigid support 3 is preferably in the form of a flat wall. On the one hand it rigidly supports the bearing support 20, which is mounted for rotation shaft 34 of the abrasive disk 4 and on which is rigidly mounted bearing 22 copy of the probe 10 and the drive motor 5. On the other hand rigid support 3 supports the bearing support 21, which is rigidly fixed to the engine 11 and in which is mounted for rotational and translational movement of the output shaft 16.

As shown in Fig.1, the output shaft 33 of the drive motor 5 in a known manner, for example by coupling 35, is connected to the shaft 34, on which is rigidly fixed abrasive disk 4. The shaft 34 mounted in a bearing support 20 by means of bearings 25 rolling in a known manner, enables the rotation of the disk with the required frequency. Thus, section 34 covered by a sealing ring, in order to retain lubricating fluid medium in the compartment 31 of machining. The abrasive disk 4 is rigidly fixed on the shaft 34 a removable manner, for example, by means of a holder 36, equipped with a Central locking nut 38 to enable disk swapping. In the optimal exemplary embodiment of the abrasive disk 4 is mounted with the possibility of relocating because of the abrasive disk is preferably fully or partially completed bilateral. Preferably the abrasive disk is a diamond blade, the sides of which converge toward the periphery of the disc so that the radial cross section of the disk preferably forms an isosceles triangle with the apex at the periphery of the disk.

Copy probe 10 preferably is rigidly fixed on the rigid support 3, or on the bearing support 20, which is installed and fixed on a rigid support 3, as shown in Fig.1. Rigid attachment copy of the probe 10 allows due to its wear and tear as a result of friction when interacting with a rotating model 9 to compensate for the wear of the abrasive disk 4. As an example in Fig.1 shows the installation of the copy of the probe 10 on the sleeve 22 with its clamp locking nut 39. However, vtalk by turning on the bearing support. The fixation sleeve 22 on the support 20 may be, for example, by using a radial locking screw (not shown).

Presented on Fig.1 machine in the best case scenario includes means for radial displacement of the copying of the probe 10, which allows the spatial correlation for a given playback on the element of the dental prosthesis model parameters 9 in the plane perpendicular to the axis of rotation of the model.

Preferably the means for radial displacement is formed by a ledge 37, which is made on the sleeve 22 is eccentric to the Central bore hole of the sleeve, which centers it on the bearing support 20. Thus, rotation of the sleeve 22 around the bearing support 20 can be displaced copy probe 10 radially due to the eccentricity of the ledge 37.

Depending on the installation location of the copy of the probe 10, it can take the form of a sector of the disk, the peripheral portion of which plays a part of the periphery of the abrasive disk 4.

In the optimal example of executing the machine may include means of axial displacement of the sleeve 22, which allows machining shorter blanks. This tool axial displacement can be performed, for example, as an intermediate in the bearing support with the possibility of longitudinal displacement, and the sleeve is set on it can be rotated, or Vice versa.

In the optimal sample copy probe 10 has a greater thickness in comparison with the abrasive disk 4 to increase the longitudinal dimension of the received items, such as item denture, compared with the model, and to compensate for in-plane errors or errors from vibration of the disk. The increase in the longitudinal size of the copy allows you to compensate for the removal of material at the stage of the necessary grinding of the workpiece after machining machine according to the invention.

Output shaft 16 is connected by its first end 41 to the drive shaft 40 of the second engine 12, for example, through a coupling 42. The second end 43 of the shaft 16 is connected for the transmission of motion, but with the possibility of free relative rotation with the movable carriage 13, preferably by means of bearings 44 rolling, for example, ball or needle bearings (Fig.1). Output shaft 16 is installed in the bearing support 21 preferably by means of bearings 26 slide with possibility of relative rotation and longitudinal movement. A sealing ring 46 comprises a shaft 16, to provide insulation engine compartment 32 from cm is the Sol on the bearing support 21, and its output shaft 46 is rigidly connected to the screw 14, for example, by coupling 47. The screw 14 is in the nut 15, which is rigidly connected to the housing of the second motor 12. Thus, rotation of the drive shaft 46 of the first motor 11 causes the translational movement of the body of the second motor 12 without transmitting rotation and the corresponding translational movement of the shaft 16 carrying a movable carriage 13.

The first motor 11 preferably is a stepper motor that allows translational movement of the shaft 16 with a speed of about 1-2 mm/min. and the Second motor 12 preferably is a stepper motor that allows the rotation of the shaft 16 with a frequency of the order of about 1/s of the drive Motor 5 of the abrasive disk 4 must ensure that the disk rotates with a frequency of about 250 rpm/s

Movable carriage 13 is in the form of a lever or caliper; its first end in the manner described is connected with the output shaft 16. On the second end of the carriage installed with the possibility of mutual relative rotation means 6 fixing the workpiece 7 and the means 8 fixation models 9. Inside the carriage and placed the transmission for the transmission of rotation from the drive shaft 16 means fixing the workpiece and the model. Proc. of the compensation of the workpiece 7 and the means 8 fixing model 9 are preferably rigidly interconnected and have a common axis of rotation, forming a common axis 59 by means of detachable connection, which allows their relative displacement in both directions. This connection is shown in more detail in Fig.3, may be made in the form of a pair of screw-nut 48, 49. Means 6 fixing the workpiece 7 is made integral with one of the elements of the pair, i.e. with a screw 48 or nut 49, and the means 8 fixing model 9 made integral with another element of this pair. For example, the means 8 fixing model 9 can be formed by the head of the nut 49, and the means 6 fixing the workpiece 7 can be formed by the head of the screw 48.

In the optimal example running between the screw 48 and nut 49 is placed a tubular element 50, which is preferable due to its conical bearing surfaces at the ends provides a centering means 6 fixing the workpiece with means 8 of fixing model. The tubular element 50 is rigidly connected with a pulley 51 belt drive 17 drive rotation, shown in Fig.1. Output shaft 16 is rigidly connected with a pulley 53 belt transmission 17 for transmitting rotation to the tubular element 50. As shown in Fig.1, the transfer belt 51, 53, 17 preferably located inside the movable carriage 13, which for this purpose is made of the cavity 54. DL is that Rethimno are connected to each other, for example, using a screw 55 and pin 56. The pulleys 53 and 51 are preferably located respectively between the two bearings 44 of the output shaft 16 and the two support bearings 52 of the tubular element 50. As shown in Fig.1, the sealing rings 57, 58 comprise a tubular element 50 and the output shaft 16 in order to protect the belt drive and the bearings inside the movable carriage 13 from the lubricating liquid in the compartment 31 of mechanical processing.

Mounting connection using screws and nuts 48, 49 allows the user, after fixing the workpiece and the model, respectively, at the head of the screw and nut, as will be explained hereinafter, to install these elements on a machine with two sides, holding in one hand one of the elements and svintsova them in the tubular element 50. Thanks to the connection of the screw-nut 48, 49 and its interaction with the above-described conical support surfaces (tubular element 50) bearing support procurement and models are installed without the possibility of free displacement and accurately aligned to a common axis of rotation. The tubular element 50 is mounted on the carriage 13 with the possibility of free rotation by means of two bearings 52 rolling, preferably as oonstruction or as a separate part of the centering template 60, which allows the fixation of the workpiece 7, the means 6 fixing the workpiece and the fixation of model 9, the means 8 fixing the model in such a way that the produced product, namely the element of the dental prosthesis, is the body inscribed in the original volume of the workpiece.

An example of such centering template (in the perspective image and the expanded scale) shown in Fig.4. The template 60 includes a slot 61 is preferably of tubular form, represents the external shape of the preform, whereby the socket may be slightly smaller than the workpiece to compensate for positioning errors. The socket 61 determines the symmetry axis 62. The second slot 63 of the pattern like the socket 61, but opened up and is coaxial socket 61 on the axis 62. Between the slots 61 and 63 in the template 60 is formed by the recess 64, the shape of the movable carriage 13. Thus, the carriage 13 can be inserted in the recess 64 and installed in the position in which the axis 62 of the template parallel to the axis 59 of rotation of the means of fixation of the workpiece 7 and model 9. The template 60 and/or the movable carriage 13 is equipped with means allowing the operator to easily produce parallel positioning axes 62 and 59, and hold them in this position during the whole lying to the normal version uses the external shape of the template 60 and the movable carriage 13 for their mutual clamp described above in the desired position. Flat wall 67 and 68 can be used as lateral stops for the carriage.

To facilitate the operation of putting on the centering pattern 60 on the movable carriage 13 in the optimal example of performing centering the template can be equipped with hinge means 65 for the disclosure of the recess 64 by a reversal of the pattern around the axis perpendicular to the axis 62. The hinge means preferably in the form of grooves 66, which reduces the thickness of the cross-section perpendicular to the axis 62. When this type joint, the hinge is provided by a flexible plastic material, which is preferably made template 60.

Tubular socket 61 of the template has a shape complementary to the shape of the preform, which contains the amount of used models 9. It is obvious that there may be as many centering templates, as there are basic forms of models of products in accordance with the intended use of the machine. Open the slot 63 of the template is made in shape complementary to the shape of the preform, in order to facilitate its flow to appropriate means of fixing the workpiece in a direction parallel to the tubular socket 61 and parallel to the axis 59.

First, the model 9 is fixed at one end on tools 8 is opredeleniya material around the axis 59 of the rotation means of fixation. Means 8 fixation may contain lug 69 formed, for example, on the head of the nut 49. The tip 69 is included in the corresponding socket, made in model 9 for better fixation, as shown in Fig.3. Tip 69 mounted on the head of the nut 49 with an insulating material 71. Further means 8 fixing model 9 fixed on them by the model will be installed on the machine by means of screws and nuts 48, 49, as described above.

Then centering the template 60 is placed on a movable carriage 13 by inserting the model 9 in the slot 61. After that make the fixing of the workpiece 7, the means 6 fixing the workpiece, preferably by way of bonding, in accordance with the regulations that is set centering the template 60. The volume model 9 fits into the volume of the workpiece 7.

The axis 59 of rotation of the workpiece 7 and model 9, parallel to the axis 18 of rotation of the abrasive disk, and copy part of the probe 10 in contact with the model 9, aligned with a part of the periphery of the abrasive disk 4 in a straight line parallel to the axis 18, for an exact copy of the model in the plane perpendicular to the axes 59 and 18.

The engine 12 causes the rotation of the workpiece 7 and model 9 in a direction posredstwom friction produced by the rotation, creates a moment tending to expand the sliding carriage 13 around the output shaft 16 and thus hold the model 9 and the workpiece 7 in contact respectively with a copy of the probe 10 and the abrasive disk 4. These friction forces can act together with the forces of gravity and/or optionally with elements of the power circuit (springs not shown). In the case where the motor causes the rotation of the workpiece 7 and model 9 in the opposite direction, you must ensure that the forces of gravity and/or the influence of the springs as described above.

In an optimal embodiment, the machine includes means for reversing the direction of rotation specified abrasive disk 4, which, therefore, can operate with a fair or the opposite direction depending on the direction of rotation. This allows you to optimize the wear of the disk during its use before replacement.

Controls and control (not shown) of the means of coercion during the rotation of the tool for machining, means bringing into rotation means fixing the model and workpiece and means for moving include a source of electrical power, preferably continuous picaninny compartment 32 of the cord with a tight plug connection (not shown). These tools also contain electronic equipment management and control (not shown) placed in the engine compartment 32, and a controller that provides control manufacturing cycle.

Presented on Fig.1 machine in an optimal embodiment includes means for automatically stopping the operation after machining by response to a particular position of the movable carriage 13, for example at the moment when copying the probe 10 is located near or on the axis 59 of the rotation model.

Moreover, the machine according to Fig.1 in an optimal embodiment includes means for automatic regulation of the movement of the movable carriage 13, and more specifically, the first motor 11 drive translational movement of the carriage by the force transmitted abrasive disk 4 on the workpiece 7.

Compartment 31 machining filled to a certain level of lubricating fluid, namely water, to ensure adequate lubrication and cooling of the abrasive disk 4 by means of spraying. Compartment 31 are sealed so that the liquid does not get into the motor compartment.

In an optimal embodiment of the machine according to Fig.1 further comprises environments is redstem reverse rotation of the output shaft 40 of the engine 12, what causes through friction or through a mechanical device type free wheel (not shown) rotating the discharge of the carriage away from the axis 18 of rotation of the abrasive disk 4 with the opening of access to the means of fixation 6 and 8 for subsequent operations.

The partition wall 3 in an optimal embodiment, is made of electrically insulating material to provide the capability of determining the presence of lubricant in the compartment 31 of machining by measuring the resistance when applying an electric voltage between the bearing assemblies 20 and 21. In addition, this design allows to detect electrical contact between the movable carriage 13 and a bearing support 20 for transmission to an electronic control apparatus of information about the end of machining.

Compartment 31 of mechanical processing in the optimum embodiment, provided with a hinged cover 70, shown in Fig.2. The housing 70 provides access to the interior compartment 31 and protects the environment from splashing of lubricant during operation of the machine. In addition, the machine is provided with means for automatic opening of the casing, triggered at the end of the mechanical is Juha 70 (not shown), which prevents it from opening during the machining process.

Electronic controls and control contain at least one electronic map input/output (not shown) placed in the engine compartment 32. Entries can be associated with sensors, such as sensor level of the lubricating fluid, the sensor end of the machining, the sensor opening of the casing of the Department of mechanical processing, the load sensor of the working of the engine 5, the temperature sensor. The findings may be associated with the following control devices: independent control of each engine, managing the visual interface for the user, control the locking and unlocking of the casing 70.

Next will be described an example mode of operation of the machine according to the invention. In an optimal embodiment, this mode is implemented automatically by software automatic operation.

The workflow will be described in chronological order, starting with the state in which the machine is located at the end of machining, i.e., the state transition to the next cycle machining.

When the opening cover 70 corresponding to the sensor sends a signal to the electronic ustroystvo.ranee move the engine 12 and the shaft 16 with a small amplitude, to release the abrasive disk 4 from the remnants of the previous chip processing of the workpiece. Then the movable carriage 13 is given in the extreme position to the partition 3.

Simultaneously, the engine 12 is included in the rotation direction opposite to the direction of processing. The engine 12 causes the shaft 16, which is due to friction or by using the discharge device, as described above, causes a reversal of the movable carriage 13 in the direction from the axis 18 of the engine machining with its exit from the machine to the outside (Fig.2) to facilitate performing the following operations.

The operator can be separated by unscrewing means 6, 8 fixation of the workpiece and the model, as described above. Model 9 is replaced by otkleivanie old and gluing a new model using the tip, which forms the supporting part and can be fixed by gluing in the groove model. The workpiece is replaced either by peeling processed procurement or substitute funds 6 fixation, which can be intended for a single use. Model 9 products, its bearing support and bearing new material is connected to the tubular element 50.

For optimization subject to mechanical processing of the material, the operator tries ATEM centering device mounted on the carriage alignment, for example, on reference planes 67, 68 of the clamp. Next on the corresponding workpiece 7 is applied instantly solidifying the adhesive, insert it into the slot 63 provided in the centering template, and glue it with the means 6 fixation of the workpiece.

A movable carriage 13 is transferred by turning inside compartment 31 machining and displace (push buttons that control the rapid reciprocating movement of the carriage to initial position for machining. The operator closes the protective cover, electronic controls produce water level control, for example, by analyzing the resistance between the means of mechanical processing and funds move. Electronic control means controlling the closure housing 70, for example, using the switch with magnetically operated contacts placed in the fixed part of the housing 30, and the magnet is placed in the casing, which approaches the closed position. If these control actions give a positive result, the machine is in the ready state, and a work machining process is initiated by pressing the two above-mentioned buttons.

The engine 12 causes the rotation of the shaft 16 through a belt 17 of the front is the author carriage 13 is pressed against the disk 4 and the imaging probe 10 under the action of internal friction. At the same time, the first motor 11 of the feed drive. Through the screw-nut 14, 15 it causes translational motion of the motor 12, the shaft 16, and hence the workpiece and the model, thus allowing a systematic reading copy probe 10 of the outer surface of the model except for concave areas. Simultaneously, the motor 5 processing, resulting in rotation of the abrasive disk 4. During the whole stage of machining glands electronic controls control a certain number of sensors, namely, a lock casing, water level, internal temperature, engine load 5 processing, buttons for manual control. Pressing one of two buttons is a signal for emergency stop. Finish machining is determined by the electric contact between the movable carriage 13 or means 6 fixing the workpiece on one side and a bearing support 20 or abrasive disk 4, or another element of the device with the other hand. The load on the engine 5 processing can be used to control the speed of the motors 11 and 12 by using the automatic control system, which allows to optimize the speed machining in zapisyvaetsja copy probe, the carriage is folded by turning to the bearing support 20 mechanical processing. When this occurs, the circuit of the electrical contact, and three engines 5, 11, 12 stop. The processed product is separated from the rest of the blanks and falls to the bottom of the compartment 31 of machining. If the fall does not occur, the mechanical processing continues until the end of the length of the workpiece. Next, the means of fixation of the workpiece reaches the abrasive disk, which is also made of metal, and the contact end processing stops three engines. The processing cycle is completed by returning to the initial point corresponding to the opening of the casing. The cover may be removed when removing the axis of its hinged mounting, which facilitates emptying and cleaning of the compartment 31 of machining.

Claims

1. The machine (1) for machining at least one of a volumetric object, namely the element of the dental prosthesis by the automatic backup that contains at least the tool (4) for machining with the axis of symmetry (18) and having at least one degree of freedom of rotation around the axis balanced the symmetry; means (6, 8) fixing the workpiece (7) subjected to mechanical processing, and model (9) with at least one rotational degree of freedom; means (12, 16, 17) bringing into rotation means (6) fixing the workpiece and means (8) fixing model; copy probe (10) is made with the possibility of contact with the outer surface of the module; means(11, 13, 14, 15, 16) reciprocal movement, on the one hand, means (6) fixing the workpiece and tool for machining and, on the other hand, means (8) fixing model and the specified copy of the probe (10), and means for moving installed with the possibility of being in constant contact tool for machining a workpiece and a copy of the probe with the model; management and control of the means of coercion during the rotation of the tool for machining and means of fixation, as well as mutual funds movement, and the tool for machining is executed in the form of a disk (4), the sides of which are made, at least partially, abrasive, and means for moving include a movable carriage (13), which is installed with the possibility of free rotation means (6) fixing the workpiece and means (8) FIC is characterized in that that at least two degrees of freedom of the movable carriage (13) are the rotational degree of freedom and the translational degree of freedom, and means for moving includes the tools (11, 14, 15) translational motion and means for effecting rotation of the movable carriage.

3. The machine under item 2, characterized in that it contains a rigid support (3), the means of implementation of the translational movement of the movable carriage containing the first motor (11) is rigidly connected with a rigid support, means bringing into rotation means (6) fixing the workpiece and means of bringing into rotation means (8) fixing model (9) contain a second motor (12) associated with the first motor (11) by means of screws and nuts (14, 15), and a movable carriage (13) made with the possibility of free rotation around the output shaft (16) of the second motor, and a rigid bearing acts as a guide for rotational and translational movement of the output shaft (16).

4. The machine under item 3, characterized in that the rotation of the movable carriage (13) around the output shaft (16) is provided by the moment of friction forces arising from the rotation means (6) fixing the workpiece and means (8) fixing model (9).

5. The machine under item 4, characterized in that Thu is to be placed, located on one line.

6. The machine under item 5, characterized in that the axis (18) of rotation of the disk (4) parallel to the axes of these funds (6) fixing the workpiece and means (8) fixing model (9), and rigid support (3) in the form of flat walls perpendicular to the axis of rotation of the disk.

7. The machine under item 6, characterized in that the axis (18) of rotation of the disk (4) and output shaft (16) of the second engine installed in respective identical bearings.

8. Machine according to any one of paragraphs.3-7, characterized in that copy probe (10) is rigidly fixed on a rigid support (3), in order by his abrasive wear due to friction in the interaction with the model (9) to compensate for the wear of the disk (4).

9. Machine according to any one of paragraphs.1-7, characterized in that it further includes means for radial displacement of the stylus probe (10), allowing to establish the spatial correlation given up item prosthesis in relation to the model (9) in the plane perpendicular to the axis of rotation of the model.

10. Machine according to any one of paragraphs.1-9, characterized in that copy probe (10) has a thickness greater than the thickness of the disk (4) to increase the longitudinal dimension of the element of the prosthesis relative to the longitudinal STV (8) fixing model (9) are interconnected by a pair of screw-nut, this means fixing the workpiece rigidly connected with one of the interacting elements of a pair of screw-nut, and means of fixation models are rigidly connected to the other of the interacting elements of a pair of screw-nut.

12. Machine according to any one of paragraphs.1-11, characterized in that it contains means to automatically stop the work after the machining by the perception of a certain position of a mobile carriage (13).

13. Machine according to any one of paragraphs.1-12, characterized in that the opposite side of the disk (4) converge to the periphery of the disc.

14. Machine according to any one of paragraphs.1-13, characterized in that it contains means of regulation of the moving force transmitted by the drive (4) on the workpiece (7).

15. Machine according to any one of paragraphs.1-14, characterized in that it includes means for lubrication of the specified disk (4) spray.

16. Machine according to any one of paragraphs.1-15, characterized in that it includes means for reversing the direction of rotation of the disk (4).

17. Machine according to any one of paragraphs.1-16, characterized in that it contains means to automatically retract the movable carriage (13) at the end of machining.

18. Machine according to any one of paragraphs.1-17, characterized in that it contains centering the template, allowing fixate model element of the dental prosthesis, in order to ensure the integration model in the total harvest.

19. Machine according to any one of paragraphs.1-17, characterized in that the workpiece (7) and model (9) fixed to the corresponding fixing means no more than one corresponding end.

 

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The invention relates to prosthetic dentistry

FIELD: medical engineering.

SUBSTANCE: method involves producing an opening of diameter reaching 2 mm with diamond or hard alloy bore in adhesive cover after preparing abutment tooth and prosthesis or widening already available perforation also to diameter of 2 mm. The prosthesis is set on the abutment tooth and place is marked for creating and directing pin-canal in the area of cutting one-third of the frontal abutment tooth or in the lateral abutment tooth equator area. The pin-canal direction is to correspond to path for introducing the prosthesis. The pin is screwed-in with screwdriver and holder to a depth of about 2 mm into dentin. The prosthesis is set on the abutment for making control. The pin is filed-off to adhesive cover layer after having fixed the prosthesis on composition cement.

EFFECT: prolonged service life; high functional value.

FIELD: medical engineering.

SUBSTANCE: method involves producing an opening of diameter reaching 2 mm with diamond or hard alloy bore in adhesive cover after preparing abutment tooth and prosthesis or widening already available perforation also to diameter of 2 mm. The prosthesis is set on the abutment tooth and place is marked for creating and directing pin-canal in the area of cutting one-third of the frontal abutment tooth or in the lateral abutment tooth equator area. The pin-canal direction is to correspond to path for introducing the prosthesis. The pin is screwed-in with screwdriver and holder to a depth of about 2 mm into dentin. The prosthesis is set on the abutment for making control. The pin is filed-off to adhesive cover layer after having fixed the prosthesis on composition cement.

EFFECT: prolonged service life; high functional value.

FIELD: medical engineering.

SUBSTANCE: method involves taking anatomical imprint from jaw under prosthetic repair, casting supergypsum model for carrying out parallelometric studies, model duplication, modeling future clasp carcass skeleton from wax, enclosing the wax model into cell filled with gypsum, evaporating wax and filling the arisen cavity with polymer. The clasp carcass model is reproduced as metal one from polymer model for all models taken in production. Polymer for manufacturing clasp carcass model is reactive composition hardening at room temperature and composed of two ingredients taken in 2:1 proportion by weight. The first ingredient portion is based on polymethyl methacrylate, and the second one is polymethyl methacrylate with dimethylaniline added in the amount of 1-2% by mass.

EFFECT: significantly accelerated carcass manufacturing process; high accuracy in reproducing sizes; improved connection of locks and telescopic crowns to polymer carcass; low production costs.

FIELD: medical engineering.

SUBSTANCE: method involves taking anatomical imprint from jaw under prosthetic repair, casting supergypsum model for carrying out parallelometric studies, model duplication, modeling future clasp carcass skeleton from wax, enclosing the wax model into cell filled with gypsum, evaporating wax and filling the arisen cavity with polymer. The clasp carcass model is reproduced as metal one from polymer model for all models taken in production. Polymer for manufacturing clasp carcass model is reactive composition hardening at room temperature and composed of two ingredients taken in 2:1 proportion by weight. The first ingredient portion is based on polymethyl methacrylate, and the second one is polymethyl methacrylate with dimethylaniline added in the amount of 1-2% by mass.

EFFECT: significantly accelerated carcass manufacturing process; high accuracy in reproducing sizes; improved connection of locks and telescopic crowns to polymer carcass; low production costs.

FIELD: medicine.

SUBSTANCE: method involves using obturating prosthesis having basic and auxiliary surface connected to each other with additional anterior, posterior and two lateral vertically arranged surfaces forming a cavity. The anterior and posterior vertically arranged surfaces have slot-like recesses. Reference notch marks are produced on the auxiliary surface near nose. The alveolar process is manufactured as base and wall. Reference notch marks are produced on the base. Wall has holes for making process lightweight. Teeth are set on the wall.

EFFECT: simplified prosthesis design.

6 cl, 3 dwg

FIELD: medical engineering.

SUBSTANCE: device has vestibular and oral parts connected to each other with crosspieces manufactured from orthodontic wire placed in interdental spaces by producing jaw imprints. Working and auxiliary models are molded. To place treating bandage, general clinical equator of all teeth included into the splint is to be determined on working model using parallelometer. Then, space between the clinical equator line and gingiva and a gingiva part 7-8 mm remote from gingival papillae are covered with dental wax layer of thickness equal to or less than 1.5 mm. Next to it, duplicate model is produced for manufacturing the splint having recess equal to wax layer thickness 1.5 mm. Changing wax for transparent plastic, filing and polishing the splint is carried out by applying method of common use.

EFFECT: enhanced effectiveness of treatment.

2 dwg

FIELD: medical engineering.

SUBSTANCE: dental prosthesis (10) is supported by implant and has several basal recesses (13) in prosthesis body (12). One conic cap (7) is fixed in each recess by potting with self-hardening plastic material. Each cap (7) is put on conic shank (6) of prong (2) introduced into conic opening of enosseous implant (1). To produce mentioned prosthesis, prefabricated members only are used. Conic caps (7) are fixed in body (12) of dental prosthesis (10) by potting it during single visit in dentist's room for producing prosthesis ready for use.

EFFECT: high quality of prosthesis manufactured directly in oral cavity.

4 cl, 7 dwg

FIELD: medical engineering.

SUBSTANCE: dental prosthesis (10) is supported by implant and has several basal recesses (13) in prosthesis body (12). One conic cap (7) is fixed in each recess by potting with self-hardening plastic material. Each cap (7) is put on conic shank (6) of prong (2) introduced into conic opening of enosseous implant (1). To produce mentioned prosthesis, prefabricated members only are used. Conic caps (7) are fixed in body (12) of dental prosthesis (10) by potting it during single visit in dentist's room for producing prosthesis ready for use.

EFFECT: high quality of prosthesis manufactured directly in oral cavity.

4 cl, 7 dwg

FIELD: medical engineering.

SUBSTANCE: method involves cleaning abutment teeth from deposit using diamond drill. Saw cuts are made in the abutment teeth in parallel to dental axis. The cuts are treated with acid and adhesive system and filled with fluid composite material. Glass fiber material is cut in advance in strips and set into the saw cuts arranging directivity vector in perpendicular to dental axis building in this way fastening system from fiber glass where oppositely directed fibers are interwoven with each other. Then the fastening system is filled with the fluid composite material or resin. Stump is repaired with condensed composite. Final prosthesis modeling is carried out using micro-hybrid material. Post-bonding is carried out using arbitrary protector material.

EFFECT: high retention capability; uniform chewing load distribution.

3 cl, 3 dwg

FIELD: medical engineering.

SUBSTANCE: method involves cleaning abutment teeth from deposit using diamond drill. Saw cuts are made in the abutment teeth in parallel to dental axis. The cuts are treated with acid and adhesive system and filled with fluid composite material. Glass fiber material is cut in advance in strips and set into the saw cuts arranging directivity vector in perpendicular to dental axis building in this way fastening system from fiber glass where oppositely directed fibers are interwoven with each other. Then the fastening system is filled with the fluid composite material or resin. Stump is repaired with condensed composite. Final prosthesis modeling is carried out using micro-hybrid material. Post-bonding is carried out using arbitrary protector material.

EFFECT: high retention capability; uniform chewing load distribution.

3 cl, 3 dwg

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