Optoelectronic device for tubular goods thread control

FIELD: physics; measurement.

SUBSTANCE: invention is related to instrumentation and may be used for contactless control of goods with external thread. Device contains movable carriage equipped with electric drive of travel and linear shift detector, support fixed on movable carriage, optical-mechanical unit equipped with electric drive of rotation around longitudinal axis, detector of turn angle and two optoelectronic heads, every of which is formed from optically conjugated source and receiver of light radiation that are installed on different sides from threaded section of item under control. Besides, device contains personal computer (PC), inlets of which are connected to outlets of light radiation receivers, linear shift detector and rotation angle detector, and outlets - to electric drives of shift and rotation. Optical-mechanical unit is arranged in the form of spindle, shaft of which is installed in bearings on support and is equipped with vertical shift mechanism. Spindle head is arranged in the form of two C-shaped holders of optoelectronic heads installed on faceplate on different sides from longitudinal axis of item under control and is equipped with mechanism for interbeam gap adjustment. At that mechanism for spindle shaft vertical displacement is arranged in the form of jack, and mechanism for adjustment of interbeam gap of spindle head represents adjustment shaft with sections of the right and left thread, which are installed in corresponding threaded openings of optoelectronic head holders. Spindle shaft is rigidly fixed to faceplate, and movable carriage is provided on mechanism for spindle shaft vertical displacement. Besides, holders of optoelectronic heads are equipped with guides, between which faceplate is installed, and optical-mechanical unit is equipped with n pairs of optoelectronic heads, where n is integer number and n>1.

EFFECT: expansion of controlled pipe diameters range and higher accuracy of control results.

3 cl, 8 dwg

 

The invention relates to measuring technique and can be used for contactless control of products with external thread, for example, to control thread casing, drilling and tubing of various sizes in the repair of oilfield equipment and wells.

The establishment of the state of the art.

Mass application in the oil industry pipes puts the task of creating a universal and high-performance control means of the thread. Money making threads have reached at the present time quite a high degree of perfection that cannot be said about the quality of their control. The application of advanced technologies allows you to produce thread many times faster than their control [1].

The nomenclature used types of threads are very extensive, but for any threads functional parameters are geometric elements that define their profile. So, for example, threaded connections used in the oil industry, the main geometrical parameters are: step and the height of the coils, the taper profile, angle profile of coils, the radii of the peaks and troughs of coils, parameters, chamfers, etc.

For the assessment of novelty and inventive step of the claimed solution consider a number of known technical means of verification external thread.

<> Known contact and non-contact means of the control parameters external threads[1, 2, 3, 4]. However, they are characterized by a narrow range of diameters of controlled pipes and low reliability of testing results.

A device for controlling the thread drill pipe containing the node-based, which is installed in a controlled tube, and a ferrule with a mechanical gauge that screw with some force on the pipe manually using mechanics and automatically control the force of screwing. Largest efforts are judged on the quality of the thread [5].

It is also known a device for controlling tension of a conical thread that contains the position control and mechanical caliber-ring, which is screwed on the thread of the controlled product. There is a contact element, which in the beginning of the piston comes into contact with controlled products and the signal from which is through the current collector is transmitted to the sensor, which includes a recording device counting the number of revolutions of the caliber-ring [6].

Devices [5, 6] is suitable primarily for control and new pipes are not suitable for maintenance and rehabilitation works, because the wear of the thread tubing and casing pipes uneven. It is necessary to determine the location and degree of wear of a particular round to find out m the should do this thread to operate on, do I need a repair and what. These devices do not provide reliable information because of the thread quality is judged by indirect parameter - the number of revolutions of the caliber with the screw.

Known contactless optoelectronic device control parameters thread pipe products containing the source and receiver of the light flux with the means of information processing and the scanner unit, connected with a coordinate table and made with the possibility of reciprocating and rotational motion, and the source and receiver of the light flux with the means of information processing are combined in a single unit, made in the form of conoscope, and the scanner unit is made of at least two optically associated with conoscope channels and a system of mirrors, ensuring the passage of the light flux from conoscope through the channels to the outer or inner surfaces of the product [7].

However, such a device is characterized by low accuracy of measurements due to the high sensitivity to the effects of glare, different roughness and local contamination of the surface of the thread. The use of the device requires the prior matting surface of the thread, is critical to the positioning of the controlled product, because it uses one-way method of measurement is heavily influenced by Yes is e minor mechanical vibrations.

Also known contactless optoelectronic device control parameters threading, based on the informal way of measuring and containing a movable carriage configured to move along the longitudinal axis of the test object, opto-mechanical unit, placed on a movable carriage, means for reading information and a tool for information processing [8-10].

Such devices are characterized by high requirements to the purity of the surface of the thread. Opto-mechanical unit such devices are made in form of a pipe, that is almost a closed cavity (open ends). In the process of working in this cavity with controlled products can be introduced foreign particles, dirt, sand, etc. the Last accumulating there, can distort the measurement results.

Therefore, such a device requires constant cleaning of the internal cavity of the optoelectronic head from the dirt.

The closest to the proposed invention to the technical nature and circuit design is an optoelectronic device control thread pipe products described in [10].

This device has a movable carriage configured to move along the longitudinal axis of the test object and is equipped with electric displacement is s and the linear position sensor, the stand is fixed on a movable carriage, opto-mechanical unit, mounted in bearings on the stand and is equipped with electric turn around the longitudinal axis, the angle sensor and the two optical heads, each of which is formed of optically conjugate source and receiver light emission with appropriate lenses and located on opposite sides of the threaded section of controlled products, and personal computer (PC), the inputs of which are connected to the outputs of the receivers of the light radiation, the linear position sensor and the angle sensor, and outputs to the actuators move and rotate, with opto-mechanical the unit is made in the form of a hollow cylindrical tube with slots inside of a controlled product, the longitudinal axis of which is aligned with the longitudinal axis of the opto-mechanical unit, and optoelectronic head mounted on platforms in the slots of the hollow cylindrical pipe.

By the greatest number of similar features and achieved when using the result of this technical solution is selected as a prototype of the proposed device.

The disadvantages of this device.

1. The device is designed to control the thread of a pipe of a particular diameter (Tibor is smera), as the basis of its optical-mechanical unit is "hard" construction - metal tube, which limits the range of diameters of measuring tube. In practice, often it is necessary to control pipes of different diameters, such as casing pipe diameter 146 mm, 168 mm, 178 mm, 194 mm, 219 mm, 245 mm

However, even if the controlled product is placed inside the optical-mechanical unit, before performing the measurements, the problem of ensuring the alignment of its longitudinal axis with the axis of the opto-mechanical unit.

2. As noted above, the opto-mechanical unit is made in the form of a tube, i.e. it has almost a "closed" structure. During operation it can accumulate soil particles and other foreign objects introduced controlled products. The device is optical, so the effect on the accuracy of the measurements, and therefore the reliability of testing results.

The essence of the invention.

The invention is directed to the achievement of these technical results as:

a) expansion of the range of diameters of the controlled tubes;

b) increase the reliability of the control thread of the pipe by removing the accumulation of contaminants in the optical-mechanical unit.

The achievement of these technical results achieved by the fact that in the known optoelectronic device control thread fittings, containing a movable carriage configured to move along the longitudinal axis of the test object and is equipped with electric displacement and the linear position sensor, stand, mounted on a movable carriage, opto-mechanical unit, mounted in bearings on the stand and is equipped with electric turn around the longitudinal axis, the angle sensor and the two optical heads, each of which is formed of optically conjugate source and receiver light emission with appropriate lenses and located on opposite sides of the threaded section of controlled products, and personal computer (PC), the inputs of which are connected to the outputs of the receivers of the light radiation, the linear position sensor and the angle sensor, and outputs to the actuators move and rotate, optical-mechanical unit is made in the form of a spindle, which shaft is mounted in bearings on the stand with a vertical offset, and the spindle head is made in the form of two C-shaped holders optoelectronic heads mounted on the face plate on opposite sides of the longitudinal axis of the test object and provided with adjustment mechanism mezhluchevoy gap, the mechanism is the vertical displacement of jalaspandana made in the form of Jack, and the adjustment mechanism mezhluchevoy clearance spindle nose is a tuning shaft with portions of the right and left-hand threads posted in the corresponding threaded holes of the holders of optoelectronic head, and the spindle shaft is rigidly connected with the faceplate and on the mechanism of the vertical displacement of the spindle shaft is placed a movable carriage.

In addition, holders of optoelectronic heads provided with guides between which is placed the faceplate, and opto-mechanical module includes n pairs of optoelectronic heads, where n is an integer and n>1.

Verification of compliance of the claimed device, the condition of patentability "novelty".

Authors conducted the analysis of the prior art, including searching by the patent and other technical and scientific information sources and identify sources that contain information on similar devices, has allowed to establish that there are no analogues characterized by signs, identical to all the essential features of the device, and the selection from the list of unique prototype [10] provided identifying essential in relation to the technical results of the distinguishing features of the claimed device.

The main features that distinguish the claimed device from the prototype are:

- performance optical-mechanical unit in the form of a spindle,

- install the shaft in the bearings on the stand,

- supply of the spindle shaft mechanism vertical offset

- execution of the spindle head in the form of two C-shaped holders optoelectronic heads mounted on the face plate on opposite sides of the longitudinal axis of the test object,

- supply spindle head adjustment mechanism mezhluchevoy gap

the implementation mechanism of the vertical displacement of the spindle shaft in the form of Jack,

- run adjustment mechanism mezhluchevoy clearance of the spindle head in the form of a tuning shaft with portions of the right and left-hand threads posted in the corresponding threaded holes of the holders of optoelectronic heads,

- installation of rigid connection between the shaft of the spindle and faceplate,

- placing a movable carriage on the mechanism of the vertical displacement of the spindle shaft.

In addition,

- supply holders optoelectronic heads, guides, between which is placed face-plate,

- supply opto-mechanical unit n pairs of optoelectronic heads, where n is an integer and n>1.

The presence of these distinctive features ensures compliance of the claimed device, the condition of patentability "novelty" under the current law.

Verification of compliance of the claimed device condition patentable the ti inventive step".

To check compliance with the requirement of inventive step, the authors conducted an additional search and analysis solutions for the purpose of revealing of signs consistent with a non-selected prototype characteristics, the results showed that the claimed object is not obvious from the prior art, established by the authors.

In other words, a comparison of the proposed system is not only the prototype, but also with other technical solutions in this and related fields of optoelectronic measuring equipment showed that the latter does not contain characteristics similar to the characteristics that distinguish the claimed technical solution to the prototype.

Specified allows to make a conclusion on the compliance of the claimed device, the condition of patentability "inventive step" by applicable law.

The new set of essential features of the device allows you to extend the range of diameters of controlled pipes and increase the reliability of the results of the control thread, which is confirmed by the following data.

The invention is illustrated in the drawing, which shows:

- figure 1 - General view of the device (front view);

- in figure 2, a - faceplate and holders with optoelectronic heads (left side view);

- 2, b - the same, with a projection on them is antura threaded section of the testing pipe;

- figure 3 - faceplate (right side view);

- figure 4 - adjustment shaft adjustment mechanism mezhluchevoy gap;

- figure 5 is a mechanism of combining longitudinal axes;

- figure 6 is one of the C-shaped holders optoelectronic head (in three dimensions);

- 7 - basic (interconnect) of the telecommunications device;

on Fig - note measurement of the thread profile.

Device description in statics.

Optoelectronic device control thread tubular products includes (1) base 1 on which is mounted the mechanism 2 supply and fixing of controlled products (e.g., tubing) 3 and the mechanism 4 vertical displacement, the sliding carriage 5, is hosted on the mechanism 4, the stand (support) 6, mounted on the movable carriage 5, the opto-mechanical unit, made in the form of a spindle consisting of a shaft 7 and the head based on the faceplate 8 and two C-shaped holders 9, and a personal computer (PC) 10 (7).

Each C-shaped holders 9 fixed optoelectronic head, consisting of optically conjugate of the source 11 and receiver 12 light radiation, with corresponding lenses 13 and 14 and are located on opposite sides of the threaded section of the test object 3 (2, b).

C-shaped holders 9 optoelectronic head set is on the faceplate 8 on opposite sides of the longitudinal axis 15 of the controlled products 3 and provided with adjustment mechanism mezhluchevoy gap, and the face-plate 8 is rigidly connected with the shaft 7 of the spindle with the pins 16 (Fig 1, 3).

The shaft 7 of a spindle mounted in bearings 17 on the stand 6 and is equipped with electric 18 rotate around the longitudinal axis 19 and 20 gauge angle (1, 7).

In the General case, the longitudinal axis 15 of the test object 3 and the longitudinal axis 19 of the shaft 7 of the spindle lie in the same vertical plane and parallel to each other.

The movable carriage 5 is arranged to move along the longitudinal axis 15 of the test object 3 along the guide rails 21 and supplied with the actuator 22 and move the sensor 23 linear (1, 7). Thus rotation of the drive shaft 22 by means of rollers 24, the belt 25 and the lever 26 is converted into a longitudinal movement of the carriage 5.

The adjustment mechanism mezhluchevoy gap is made in the form prescribed in bearings 27 (Fig 1) trimmer shaft 28 with the right areas 29 and 30 left threads at the ends (figure 4), is placed in the corresponding threaded holes 31 of the holders 9 (6). The shaft 28 may be provided with a handle 32 or to have a face under the wrench. The bearings 27 are placed in the ears 33 of the gear 8 (Fig 1, 2).

For convenience of adjustment mezhluchevoy gap, each of the holders 9 optoelectronic heads provided with guides 34 (Fig 1, 3)between which is placed face-plate 8, and the locking elements is - bolts 35 (figure 2, a), nuts 36 and washers 37 (figure 3). The bolts 35 are inserted into the holes 38 of the holders 9 (6) and the oblong hole 39 table 8 (figure 3).

Sources 11 a parallel light beam can be implemented using a semiconductor laser, and the receiver 12 light emission on the basis of the integral of a one-dimensional line. When this device photolyase oriented in space perpendicular to the longitudinal axis 15 of the controlled products 3 (i.e. along the Y-axis of the device coordinate system, see Fig).

Mechanism 4 vertical offset contains (5) housing, consisting of 40 fixed and movable sections 41, the pivot point 42 and pointer 43 height arrow. Hinge 42 is made in the form of four "parallelogram", provided with a screw 44 with the arm 45 and a nut 46 and mounted on the fixed section 40 of the housing. The fixed section 40 is installed on the base 1, and the movable section 41 of the housing, the carriage 5.

The purpose and function of the elements and nodes of the device.

Mechanism 4 vertical offset is used to control the height of the longitudinal axis 19 of the shaft 7 in a vertical plane and combining it with the longitudinal axis 15 of the controlled products 3, i.e. to ensure their alignment. Control the height of the axis 19 of rotation of the shaft 7 is carried out by the pointer 43.

Possible discrepancies between the major variants of the mechanism 4. Due to the fact that during operation of the device height adjustment is relatively rare, it is made with manual transmission. In the device, implemented by the applicant, it is implemented on the base of a conventional automobile Jack.

Movable carriage 5 along with the actuator 22 is designed to move the optical-mechanical unit along the longitudinal axis 15 of the controlled products 3. When this sensor 23 linear motion provides the code generation of the coordinates of the optical-mechanical unit along the axis 15 and transfer them to the PC 10.

Stand (bearing) 6 for fixing the shaft 7 with the actuator 18 and the sensor 20 of the angle of rotation on the movable carriage 5, and the sensor 20 provides for the formation of codes of the angle of rotation of the shaft 7 around the axis 19 and transfer them to the PC 10.

The adjustment mechanism mezhluchevoy gap at the base of the trimmer shaft 28 with a handle 32 is designed to change the size of the gap And (2, b) between the light sources 11 of the radiation. Control values mezhluchevoy gap And by using removable dipsticks 47.

Optoelectronic heads are used for generating signals corresponding to the thread profile of the test object 3.

The device description in the dynamics.

The device is implemented shadow method of measurement. When this operation takes place in several stages.

1. Adjust the alignment of the test object 3 and the shaft 7 of the spindle.

The need for this setup due to the fact that when you change the size of the pipe 3, is placed on the engine 2, changing the height of the axis 15 on the base 1. The larger the diameter of the casing 3, the greater the height of the axis 15 on the base 1 and the more you need to raise the axis 19 of the shaft 7 of the spindle.

To adjust this height mechanism is used 4 vertical offset.

During the rotation of the arm 45 rotates the screw 44, which leads to the translational movement of the nut 46 along the screw 44. Nut 46 "carries" a couple of links of a node 42. As a result, the node 42 is compressed or decompressed, providing respectively raising or lowering the movable section 41, and therefore, the carriage 5 with stand 6 and the shaft 7.

Thus, rotating the handle 45 on the arrow of the pointer 43, install the necessary height of the axis 19 of rotation of the shaft 7, corresponding to the testing pipe schedule 3.

2. Setting values mezhluchevoy gap (distance).

The need for this setup due to the fact that when you change the size of the pipe 3, is placed on the engine 2, changing its diameter, i.e. the distance between diametrically opposite the pipe sections 3. The larger the diameter of the casing 3, the greater must be the gap And between the rays optoelectronic heads.

To adjust the decree of the aqueous gap loosen all the nuts 35 on the faceplate 8. Rotating the tuning shaft 28 by means of a lever 32, pushing the holders 9. Install the gauge 47, corresponding to the custom size of the pipe 3 between the holders 9, as shown in figure 2, B. Then rotate the shaft 27 in the opposite direction until it stops holders 9 in the gauge 47. Take out the gauge 47 and tighten all nuts 35.

3. Enter in the PC 10 of the control program thread pipe this size.

In the PC 10 are input required input data and the corresponding control program.

4. Performing control measurements.

Using 2 pipe 3, which is intended to control, is applied to the device and is fixed in its initial position before the optical-mechanical unit, for example, as shown in figure 1.

The signal from the PC 10 is started, the actuator 22. As a result of moving the movable carriage 5 optoelectronic head take a set of the original linear position xaboutalong the axis 15, corresponding to the beginning of the measurements (the beginning of the threaded pipe section 3). When this specified position optoelectronic heads is controlled by the sensor 23, the output of which relevant codes fed to the input of the PC 10.

The signal from the PC 10 is started, the actuator 18. As a result of rotation of the shaft 7 optoelectronic heads occupy a given initial angular position α0(s) is relevant to the proceeding. While specified angular position of the optical head is controlled by the sensor 20, the output of which relevant codes fed to the input of the PC 10.

Further according to the signal from the PC 10 is started, the actuator 22. As a result of moving the movable carriage 5 optoelectronic head begin to move along the axis 15. This sequence codes coordinate x from the output of the sensor 23 is continuously fed to the input of the PC 10. And from the output of the sensor 20 to the input of the PC 10 receives a sequence of the same code corner α0, i.e. the angular position of the optical head is not changed.

Sources 11 optoelectronic heads continuously generate a parallel luminous flux. Part of this flow is blocked measured plot thread (Fig). The device is implemented shadow measuring method, resulting in a part of the photoelectric receivers (photolink) 12 is lit, and the other part is dark, which is determined by the profile plot thread. Appropriate signals from the outputs of the photocells is fed to the input of the personal computer 10 and stored in its memory.

The above measurements and storing the results of such measurements in the PC 10 continue up until optoelectronic head does not reach the end of the threaded portion of the pipe 3, which was defined as baseline data before the beginning of the Ohm measurements. With the end of the threaded portion of the pipe 3 PC 10 stops the actuator 22 and includes an actuator 18 rotates the shaft 7, and therefore, the optoelectronic head at a given angle Δα.

Then turns on the actuator 22, which shaft starts to rotate in the opposite direction. In the optoelectronic head is moved in the opposite direction, without changing of the new angular position equal to (α0+Δα). Again the sequence of codes coordinate x from the output of the sensor 23 is continuously fed to the input of the PC 10, and the output of the sensor 20 to the input of the PC 10 receives a sequence of the same code of angle (α0+Δα). Again, the sources 11 optoelectronic heads continuously generate a parallel luminous flux, a part of which overlaps the measured plot thread. In the corresponding portion of the cells Podolinec 12 is lit, and the other part is dark. Appropriate signals from the outputs of the photocells is fed to the input of the personal computer 10 and stored in its memory.

Further measurements are performed in the same way as described above and continue until such time as each of the optoelectronic heads will not turn half a turn around the axis 15 of the testing pipe 3. This is enough to get full and the formation of the profile of the entire threaded portion of the pipe 3, because channels of recording information about the two threads and simultaneous measurement of thread parameters two diametrically opposite sections of the pipe 3.

5. Processing the obtained measurement results and making decisions about the suitability of the test object.

After the measurement is complete, the PC 10 performs processing, which consists in the following. Among the data received from the receivers 12, programmatically allocated codes y coordinates of the boundaries of the "light-shadow"corresponding to the contour of the thread profile. Each boundary point with y-coordinate are associated with the corresponding coordinates α and x stored in the PC 10. As a result, by the end of the processing in the PC 10 are formed codes coordinates of the contour of the thread profile at different angles sections that are mapped to the given parameters of the thread. According to the results of this comparison, the decision about the suitability of the test object 3 for further operation.

If you want to make a thread inspection of pipes of different diameter, in the manner described above is resetting the device.

Opto-mechanical unit, having an "open" design that virtually eliminates accumulation within it particles of sand, dirt and the like, thereby increasing the reliability of the control.

Thus, p is Elounda set of essential features optoelectronic device control thread tubular products provides:

a) expansion of the range of diameters of the controlled tubes;

b) improving the reliability of testing results thread by eliminating the accumulation of foreign particles in optoelectronic heads.

In the optical-mechanical unit can be installed more pairs of optoelectronic heads (i.e. n>1). The more measuring channels of the device, the smaller the angle you want to rotate the optical-mechanical unit for measurement of the entire threaded surface of the pipe and the greater the speed of measurement (capacity) of the device.

Check the conditions of patentability "industrial applicability".

The proposed optoelectronic device control parameters thread does not cause difficulties in its manufacture. The industrial applicability of the claimed technical solution is confirmed, for example, successful implementation of one of the variants of its implementation in oil-producing company in Western Siberia to control casing diameter 146 mm, 168 mm, 178 mm, 194 mm, 219 mm, 245 mm,

The above data confirm to the claimed device, as it is characterized in the claims, the possibility of implementing it with the help of known and proposed methods and tools, and that it can be used in industry.

Sledovatel is, the claimed invention meets the condition of patentability "industrial applicability" under the current law.

REFERENCES.

1. Devices and systems for automatic control of machine parts, Rabinovich A.N. Kyiv: Kyiv, 1970, s-231.

2. Chudov VA and other Dimensional control in engineering / Vasudev, Fowlduck, Nigraham - M.: Mashinostroenie, 1982, s-250.

3. Auth. St. USSR №2073191 for the invention "Method of measurement of thread parameters and device for its implementation. Publ. 02.10.1997,

4. RF patent №2174211 invention "Caliber threaded to control external threads". Publ. 27.09.2001,

5. Auth. St. USSR №360536 "Device for controlling thread drill pipe. Publ. 01.01.1972,

6. Auth. St. USSR №1025990 "Device for tensioning of a conical thread". Publ. 30.06.1983,

7. RF patent №2267086 to the invention the Device for monitoring the parameters of threaded tubulars". IPC G01B 11/24, G01B 11/30. Publ. 27.12.2005,

8. The testimony of the Russian Federation No. 19915 useful model "the Device to control the parameters of the threaded pipe section with an external thread". IPC G01D 3/10. Publ. 10.10.2001,

9. The testimony of the Russian Federation No. 11333 useful model "the Device to control the parameters of the outer thread". IPC G01D 3/00. Publ. 16.09.1999,

10. RF patent №2151999 for the invention "Method of control parameters threading and device for goosestep", IPC G01B 11/30, G01B 3/40. Publ. 27.06.2000, (prototype).

1. Optoelectronic device control threading pipe products containing a movable carriage configured to move along the longitudinal axis of the test object and is equipped with electric displacement and the linear position sensor, stand, mounted on a movable carriage, opto-mechanical unit, mounted in bearings on the stand and is equipped with electric turn around the longitudinal axis, the angle sensor and the two optical heads, each of which is formed of optically conjugate source and receiver light emission with appropriate lenses and located on opposite sides of the threaded section of controlled products, and personal computer (PC), inputs which is connected to the outputs of the receivers of the light radiation, the linear position sensor and the angle sensor, and outputs to the actuators move and rotate, characterized in that the optical-mechanical unit is made in the form of a spindle, which shaft is mounted in bearings on the stand with a vertical offset, and the spindle head is made in the form of two C-shaped holders optoelectronic heads mounted on the faceplate on different sides of rodolniy axis of the test object and provided with adjustment mechanism mezhluchevoy gap, thus, the mechanism of the vertical displacement of the spindle shaft is made in the form of Jack, and the adjustment mechanism mezhluchevoy clearance spindle nose is a tuning shaft with portions of the right and left-hand threads posted in the corresponding threaded holes of the holders of optoelectronic head, and the spindle shaft is rigidly connected with the faceplate and on the mechanism of the vertical displacement of the spindle shaft is placed a movable carriage.

2. The device according to claim 1, characterized in that the holders of optoelectronic heads provided with guides between which is placed the platter.

3. The device according to claim 1, characterized in that the opto-mechanical module includes n pairs of optoelectronic heads, where n is an integer and n>1.



 

Same patents:

FIELD: inspection technology.

SUBSTANCE: device can be used for contact-free inspection of items having internal or external thread. Device has base 1 for placing items to be inspected, inspected item's fixing unit 3 provided with internal thread placed onto base 2, first coordinate table provided with longitudinal shift drive and longitudinal shift detector, first electro-optic head 17 placed onto first coordinate table and made of narrow light beam source (for example, laser with optical system), multiple element photoreceiver (for example, linear photoreceiver) and objective. Objective is mounted for provision of triangular optical connection of multiple element photoreceiver with narrow optical light source through corresponding surface of item 3. Device also has personal computer. Inputs of PC are connected with outputs of multiple element photoreceiver and of longitudinal shift detector. Output of PC is connected with longitudinal shift drive. Fixing unit 11 of item to be controlled, provided with external thread, is made in form of two-coned rest-centralizer disposed onto first coordinate table; one of cones is made for removal. Second U-shaped coordinate table is disposed onto base 1; table is provided with drive and lateral shift detector. Second electro-optic head is mounted onto second coordinate table at both sides from item 11. Unit 3 for fixing item is made in form of removable ring-shaped clamp (sleeve) provided with drive of rotation about longitudinal axis and with angular shift detector. First coordinate table is disposed onto base 1.

EFFECT: higher universality of device; ability of inspection as internal and external thread; simplified design.

2 cl, 5 dwg

FIELD: inspection and measurement engineering.

SUBSTANCE: method of measurement of tension of taper thread is based upon usage of inspection tool with taper thread measuring surface or with taper smooth measuring surface. Edge of instrument and edge of thread to be measured are loaded to each other (are put together) through separation member disposed between edges. Separation member provides fixed reproducing distance between surfaces of edges while repeating them to put together or to load one to the other. Then position of measurement tool is determined at the loaded position by means of linear tester. Separating unit is removed out of area of measurement and measuring tool is tied with thread to be measured. Axial position of tool is determined when the tool is integrated with thread to be measured. Tension of thread to be measured is judged from distance between plane of edge of thread to be measured and measuring planes of tool integrated with thread. Tension is defined as difference in values of two distances. First distance is the distance between measuring plane of tool and plane of edge of thread to be measured at the state when tool and thread are loaded through separating member. Second distance is the distance between axial positions of tool when front edge of instrument is loaded against edge of thread to be measured through separating member and when instrument is put together with thread to be measured. Device for measurement of tension of taper thread has inspection tool with taper threaded or with taper smooth measuring surface, aid for placing item to be inspected, linear meter with scale and measuring rod and separating member. Separating member provides keeping of fixed reproduced distance between planes of edges of instrument and thread member when they are loaded against each other repeatedly. There are aids which provide movement of separating member into area between edges of instrument and edges of thread to be measured as well as removal of separating member out of the area; it also provides ability of shift of the instrument along axis of thread to be inspected. There are aids fro putting instrument together with thread to be inspected. Inspection measurements can be made independently on degree of availability of surfaces of thread to be measured and inspection tool used for measurements.

EFFECT: improved precision of measurement; reduced labor input.

8 cl, 10 dwg

The invention relates to measuring technique and is intended to control external threads

The invention relates to optical instrumentation, namely the measuring technique using optoelectronic devices, and can be used in the manufacture and operation of components and devices with an external thread

The invention relates to measuring equipment, namely, to methods and devices for measurement of thread parameters

The invention relates to an active control of the diameter of the parts in mechanical engineering, in particular to the control of the diameter of the thread of the chassis screws on resubstituting machine tools and measuring machines

The invention relates to the control and measurement technology, in particular to devices for control of threads

The invention relates to a measuring and control technique, namely, to control the tightness of the conical thread of the drill pipes, casing and tubing

FIELD: physics.

SUBSTANCE: present invention pertains to the method of determining parameters of an anisotropic structure on angular dependence of reflected monochromatic radiation. The method is distinguished by that, the chosen structure is in form of trench structures with nanometer and submicrometer dimensions of elements. The wave length of the analysing radiation is more than 10-40 times the typical dimensions of the elements of the structure. The analysing radiation in form of a divergent beam is focused on the analysed area of the sample. The intensity of the radiation reflected simultaneously at different angles is recorded. The intensity reflects the angular dependency of the intensity of reflected radiation in the range of angles of incidents used. From this the geometrical parameters of the structure and/or refractive and absorption indices of the material of the trench structure are determined.

EFFECT: wider range of geometrical parameters measured using optical methods.

3 cl, 2 dwg

FIELD: inspection technology.

SUBSTANCE: device can be used for contact-free inspection of items having internal or external thread. Device has base 1 for placing items to be inspected, inspected item's fixing unit 3 provided with internal thread placed onto base 2, first coordinate table provided with longitudinal shift drive and longitudinal shift detector, first electro-optic head 17 placed onto first coordinate table and made of narrow light beam source (for example, laser with optical system), multiple element photoreceiver (for example, linear photoreceiver) and objective. Objective is mounted for provision of triangular optical connection of multiple element photoreceiver with narrow optical light source through corresponding surface of item 3. Device also has personal computer. Inputs of PC are connected with outputs of multiple element photoreceiver and of longitudinal shift detector. Output of PC is connected with longitudinal shift drive. Fixing unit 11 of item to be controlled, provided with external thread, is made in form of two-coned rest-centralizer disposed onto first coordinate table; one of cones is made for removal. Second U-shaped coordinate table is disposed onto base 1; table is provided with drive and lateral shift detector. Second electro-optic head is mounted onto second coordinate table at both sides from item 11. Unit 3 for fixing item is made in form of removable ring-shaped clamp (sleeve) provided with drive of rotation about longitudinal axis and with angular shift detector. First coordinate table is disposed onto base 1.

EFFECT: higher universality of device; ability of inspection as internal and external thread; simplified design.

2 cl, 5 dwg

Traverse gear // 2307321

FIELD: measuring technique.

SUBSTANCE: traverse gear comprises table, movable bridge, four pickups of linear movements along the X, Y1, Y2, and Z coordinates, and pickup of contacting with the probe mounted for permitting movements along the Z coordinate. Each pickup of the linear movements has measuring grid, recording head with carriage provided with indicating grid, and guiding member. The guiding member for all pickups of linear movements is made of two mutually perpendicular planes that are rigidly interconnected. One of the planes of the guiding member is a plane of the measuring grid with marks, and the second plane of the guiding member is made of a glass substrate. The pickup of contacting is made of a pickup of linear movements. The pickup of linear movements along the Z coordinate and the pickup of contacting have the common measuring grid and guiding member. The recording head of the contacting pickup is secured to the measuring grid of the pickup of linear movements along the Z coordinate. The probe is rigidly connected with the carriage of the contacting pickup. The carriage of the contacting pickup bears on the stop when it is in a bottom position. The stop is made of a ball secured to the area perpendicular to the face of the guiding member of the pickup of linear movements along the Z coordinate. The movable bridge is made of a glass channel.

EFFECT: enhanced precision and reduced weight.

1 dwg

FIELD: the invention refers to measuring technique.

SUBSTANCE: an arrangement for definition of roughness of a surface has a laser, in-series located along the laser radiation a half-transmitting mirror installed under an angle of 450 to the optical axle of the arrangement and a photo receiver electrically connected with a measuring block. The arrangement has a spheroconic system, a diaphragm rigidly fixed on the photo receiver, a unit of displacement of the photo receiver along the axle of the arrangement. At that the optical spheroconic system is located between the half-transmitting mirror and the diaphragm on the optical axle of the arrangement.

EFFECT: increases accuracy and reliability of definition of roughness of a surface.

2 cl, 2 dwg

FIELD: testing equipment.

SUBSTANCE: device has cylindrical case with illumination system disposed inside case. Illumination system has incandescent lamp and toroid lens, scale mesh and viewing system's objective. TV system is also introduced into the device. TV system has CCC-array disposed in focal plane of viewing system's objective and video-control unit. Device also has collimator lens disposed in front of objective of viewing system at axis of objective, which axis coincides with longitudinal axis of case. Semi-transparent mirror is mounted in front of collimator lens at its optical axis at angle of 45 degrees to lens. Device also has two semiconductor microscopic lasers. There are cylindrical lenses in front of microscopic lasers.

EFFECT: widened technical abilities.

2 dwg

FIELD: investigating or analyzing materials by the use of optical means.

SUBSTANCE: device comprises endoscope of side vision with measuring scale that is secured in the central flange provided with circular scale. The flange is set in the bushing at the outlet face of the space for permitting rotation of the flange together with the endoscope whose lens is mounted at the center of the space. The axis of sighting is positioned in the zone of ring weld joint that connects hemispheres of the space. The device is additionally provided with flexible passage for lightening internal surface of the space by flat laser beam under various angles. The passage for laser illumination is composed of semiconducting micro-laser mounted at the axis of gradient lens that is mounted at the outlet face of the light guide coincident with the back focus, second gradient lens mounted at the outlet face of the light guide, cylindrical lens, spherical lens, and flat mirror.

EFFECT: expanded functional capabilities.

5 dwg

FIELD: measuring technique.

SUBSTANCE: device has measuring unit which has prod, platform with through opening where measuring unit is installed. Prod is capable of touching surface to be measured and of moving at plane being perpendicular to measured surface and along direction of measurement. Platform is provided with three supports for installation. As measuring unit the linear shift detector is used, which detector has light source, illuminating two diffraction gratings. One of gratings is measuring, being tightly connected with prod, and the other one is additional grating. Detector also has photoreceivers. Supports are made of materials having low temperature expansion coefficient. Supports provide three-point installation of platform onto surface; they are disposed in vertexes of triangle in such a way that one catheter of triangle is parallel to one side of platform.

EFFECT: improved precision of measurement; reduced limitations in size of surface to be measured; accelerated measuring process; widened working temperature range.

4 dwg

FIELD: non-destructive inspection.

SUBSTANCE: device has standard side-view endoscope, which has system for illuminating object and system for observing object provided with measuring scale. Device is additionally provided with bushing having linear and angular scales, which bushing is capable of translation and rotation about axis of symmetry of flange fastened to input opening of cavity to be controlled. Tube with optical system for laser illumination of object is mounted inside bushing; tube has microscopic laser and mirror. Tube is mounted in bushing for linear movement relatively endoscope in parallel to its longitudinal axis. Precision of measurement of sizes of objects disposed at long distances to surfaces to be controlled is improved. Measurement of coordinates of defect location on surfaces of object can be made with higher precision.

EFFECT: improved precision of measurement.

3 dwg

FIELD: engineering of touch sensors.

SUBSTANCE: device has measuring diffraction grid, probe, two guides, two reading heads, substrate, engine, a group of magnets. First reading head is rigidly connected to body of indicator. Second reading head contains receiver of radiation, collimator, indicator diffraction grid, a matrix of photo-receivers. Group of bearings provides for movement of measuring diffraction grid along movement direction. Measuring diffraction grid and substrate are utilized as guides. One indicator diffraction grid is held in carriage. Carriage is connected to probe, which touches measured surface and moves relatively to same together with measuring diffraction grid. Measuring diffraction grid and substrate are connected to engine, and reading heads are connected to adders.

EFFECT: increased precision of touch coordinate detection at measured surface.

5 dwg

FIELD: determination of inner surface contour.

SUBSTANCE: the device has a laser, reflectors symmetrically installed on the scanner assembly provided with means for angular scanning of the reflectors relative to the axis of the mentioned assembly, and receiver of the laser beam reflected from the object surface. The scanner assembly is made in the form of a motor, whose shaft is coupled to the reflectors; the means for angular scanning relative to the axis of the scanner assembly are made in the form of a solenoid installed in the axis of the motor shaft, a laser beam splitter is positioned between the laser and deflectors.

EFFECT: enhanced accuracy and efficiency of contour measurement.

1 dwg

FIELD: laser control technologies.

SUBSTANCE: method includes sweep of light beam to straight line with providing for projection of this beam on surface of rolled strip, video capture of projection area of current beam on portion of controlled surface and point of nearby edge of rolled strip, projection area is separated on given number of ranges and for each range received image is separated on components, forming respectively line of edge points of beam light projection, being portion of measurement area, line of brightest points inside light beam projection range and line of edge points of beam projection, quitting measurement area, to determine their coordinates along rolling strip surface, coordinates of lines of brightest points and edge points within light beam projection are straightened, and value of total coordinate is determined, from which with consideration of coordinates of points of lines of brightest points within light beam projection, by geometric interpretation, total parameter of rolled strip shape SARK(i,j) is determined.

EFFECT: higher trustworthiness and efficiency.

8 dwg

Up!