Device for assembly with preload covered and covering parts
(57) Abstract:Usage: in mechanical production. The inventive on the frame coaxially mounted tooling for installation of the reported items and the pressing mechanism. The latter is in the form of a drive reciprocating movement and the associated pressing tool. The actuator is a vacuum tube site, including electromechanism with the transfer screw and power electronic Converter electric energy. Pressing the tool is connected with the screw and equipped with means for fixing it against rotation. Mentioned means made in the form of guide pins. In the device there is also a system of numerical control drive. 3 Il. The invention relates to a mechanical Assembly production in machine building and instrument-making industries, in particular, to devices for assembling joints with tension.A device for Assembly with preload covered and covering parts containing a coaxially mounted on the frame tooling for installation of parts to be assembled, and the pressing mechanism in the form of power drive the TP is driven.Pressing on the desired depth in this case is ensured by selection of the ratio of stiffness available in this device, the elastic elements, as well as by control of the drive from cyclic control system that receives the information of the moving elements of the tooling from the position sensors.A significant disadvantage of this device is constructive complexity used special tooling, manifested in the presence of several spring-loaded structural elements, and the parameters of the corresponding springs must meet a specified size parts to be assembled. It multiproduct production leads to an increase in the complexity of the changeover from one size parts to be assembled to another, since this requires the replacement of not only the clamping and locking elements tooling, but these springs, and adjusting the ratio of the rigidity of the latter.Technical problem on which the invention is directed, is to increase the efficiency of the Assembly with tightness covered and covering parts in diversified manufacturing, including Assembly as the process equipment with the same size parts to be assembled to another.This is achieved by the fact that in the known device for Assembly with preload covered and covering parts containing a coaxially mounted on the frame tooling for installation of parts to be assembled, and the pressing mechanism in the form of an actuator reciprocating movement and the associated pressed instrument and control system actuator, the actuator of the translational movement is made in the form of a vacuum tube site, including electromechanism with the transfer screw and power electronic Converter electric power, the control system is in the form of a system of numerical control, and pressing the tool is connected with the screw mentioned transmission and made the means of fixing it against rotation about its own axis in the form of guide pins.In Fig.1 shows the device, General view; Fig.2 section a-a in Fig. 1; Fig. 3 initial state of the device during the pressing parts bushing in detail of the wheel hub.The device comprises a frame 1, a part of which is a table with 2 T-slots for fixing (fixing) the appropriate tooling. On the upper part of the base is walking in the composition of the vacuum tube drive Assembly reciprocating movement. The screw 7 electromechanism 6 is rigidly connected with the pressing punch 8. In this case, the join is performed using the spacers 9, which has its upper end screwed on the landing stage of the screw 7 and fixed it (for example, by means of the pin 10 is shown in its axial line), and the lower end is connected with the punch 8 T-junction. Pressing the punch 8 has the ability to move in the sleeve 11 only forward, as provided with a guide key 12, precluding twisting it about its own axis. The sleeve 11 has a corresponding key groove and attached to the frame 1 by means of appropriate fastening elements.At the lower end of the punch 8 has a threaded hole for fastening removable pressing mandrel 13, exercising a force on the collected items 14 and 15.To perform the build process, specific details of the device has a removable rigging 16, in this case, as the clamping element centering bushing-flange 17 and fixed on the table 2 with its T-shaped grooves and the corresponding bolts.Vacuum tube site, except electromechanism 6, includes with whom my drive control, made in the form of a system of numerical control (CNC).The device operates as follows.Pre-setting it to the Assembly of parts of a specific size. For this purpose, table 2 of the press is established in relation to technological equipment 16 and the punch 8 is fixed corresponding to saprissa - adjustment of the mandrel 13. In addition, the punch 8 is applied to the centering sleeve to the flange 17 of the snap 16 at a distance, ensuring smooth installation on it collect parts 14 and 15, and in memory of the CNC system is introduced, the corresponding control program, providing, in particular, working the pressing movement of the mandrel 13 at the desired distance from the desired speed.Next on the sleeve-flange 17 are installed (either manually or using automatic manipulator) collect items 14 and 15 (Fig.3), then the numerical control system includes electromechanism 6. The rotor starts to rotate with a given frequency of rotation, and the screw 7, respectively, is moved progressively along with the punch 8 and the mandrel 13, which as you move comes in contact with part 14 (nut) and supressive it in item 15 (hubs is ZMA 6.In the case pressing on infinitely connected surfaces, as in this example (Fig.3) upon reaching the desired dimensional depth pressing command system CNC electromechanism 6 is turned off, and then the rotor is enabled to rotate in the opposite direction. Accordingly, the screw 7 together with the punch 8 and the mandrel 13 is first stopped and then returned to its original position.Next, the gathered Assembly unit is removed from the device, the tooling is installed next pair of parts to be assembled of the same size and the pressing process is repeated. In case of pressing "all the way" (which in this example may be, if in the groove of the clamping opening part 15 is pre-inserted lock ring) the process of pressing will be different the fact that when the part 14 of the thrust bearing (snap ring) force fitting, and hence the current in the armature circuit electromechanism 6 increases dramatically. At this time in the CNC receives the appropriate signal, for example, from the current sensor and it switches electromechanism on the reverse, which leads to the return of the punch 8 with the mandrel 13 in the initial position. GIVE the tech a snap to install parts to be assembled, and the pressing mechanism in the form of an actuator reciprocating movement and the associated pressing tool, as well as the drive control system, characterized in that the drive of the reciprocating movement is made in the form of a vacuum tube site, including electromechanism with the transfer screw nut and the power electronic Converter of electrical energy, the control system is in the form of a system of numerical control, and pressing the tool is connected with the screw mentioned transmission and made the means of fixing it against rotation about its own axis in the form of guide pins.
FIELD: repairing equipment of shops, namely of locomotive depots of railway road transport vehicles.
SUBSTANCE: movable installation includes lifting table having lower wheeled platform and jointly mounted on it upper stand; mechanism for lifting and descending said stand; power hydraulic cylinder mounted on upper stand and communicated by means of hydraulic lines through control unit with high-pressure pump system; clamping device for mounting-dismounting bearing assemblies. High pressure pump system includes tank, pump aggregate, draining pipeline, suction pipeline connecting inlet of pump aggregate with tank. Lifting and descending mechanism is in the form of hydraulic cylinder and it is mounted on lower platform. Pump aggregate is arranged on upper lid of tank and it is in the form of displacement hydraulic pump with electric motor. Filter is mounted in suction pipeline. Control unit is in the form of body having two built-in safety valves, tap distributor and built-in non-return valve. Manometer and additional filter connected with draining pipeline and having pouring hole are connected with control unit. Hydraulic lines are in the form of flexible hoses. Installation is provided with additional power hydraulic cylinder that forms together with connected in parallel main hydraulic cylinder unit of power hydraulic cylinders. Said unit of power hydraulic cylinders is placed on supporting sheet-plate mounted on upper stand with possibility of rotation or removal from upper stand and with possibility of moving in range of length of flexible hoses. Similar cavities of hydraulic cylinders are mutually communicated. Clamping device includes movable and stationary plates mounted respectively on rods and back lids of hydraulic cylinders and designed for joining tie rods of attachment.
EFFECT: enhanced reliability, no-failure operation of installation.
FIELD: assembling of precise units of instruments by pressing-in with use of calibrated effort, by riveting and expanding with use of precession tool.
SUBSTANCE: press includes П-shaped housing; adjustable table mounted in struts of housing and fixed to said struts by means of pins; power hydraulic cylinder with axial motion of rod; rotation drive of precession head; pumping station of hydraulic drive unit. Rotation drive of precession head includes electric motor and belt transmission. Power hydraulic cylinder is rigidly mounted on cross piece of housing and it carries plate on end of spring-loaded rod. Said plate supports two plungers spaced in parallel relative to axis of rod and spring-loaded relative to housing. Pulleys of belt transmission of rotation drive are mounted in casing. The last is secured to plate in such a way that driven pulley is mounted on spindle coaxially relative to rod of hydraulic cylinder and driving pulley is mounted on the same axis as shaft of electric motor placed in cross piece of housing. Driving pulley and shaft of electric motor are kinematically joined by means of other shaft whose one end is mounted in shaft of electric motor and whose other end is joined by means of sliding dowel with opening of supporting axle of driving pulley. Spindle of driven pulley is joined with precession head.
EFFECT: improved design providing enhanced rigidity and working accuracy of press.
FIELD: mechanical assembling procedures, namely equipment for assembling aggregates of caterpillar transport vehicles, for example semiautomatic machines for assembling caterpillar tracks.
SUBSTANCE: in apparatus for assembling chain stop plate is mounted in such a way that its working surface is arranged in plane normal relative to pressing in plane. Upper non-working portion of stop plate at side of ending pressing-in cycle is inclined in horizontal plane to side from rotor type conveyer. Lower non-working portion of plate in vertical plane is inclined relative to vertical line to side from rotor type conveyer. Stop part of pusher exceeds diameter of head of pin. Rigid guides are arranged in plane parallel to pressing-in plane; said guides are in the form of roller tables with pitch between rollers of roller table less than pitch of chain links. Guides embrace upper branch of conveyer from downwards and branch of chain from upwards at least along the whole length of it. Drive unit is provided in addition with back-stroke mechanism. Splitter is in the form of plate that is jointly mounted in its mean portion along lateral sides on supporting surface in horizontal plane along motion direction of conveyer for moving pins and it forms two-arm lever. One end of said lever is spring-loaded from downwards with possibility of engaging with dents of conveyer for moving pins. Other end of said lever is Г-shaped one and it may engage by free end with pins on inclined trough. Horizontal axes of articulation joints in vertical plane are provided with holding levers rigidly joined with plate and mounted with possibility of engaging with pins on inclined trough.
EFFECT: enlarged manufacturing possibilities, enhanced operational reliability.
FIELD: mechanical engineering.
SUBSTANCE: mandrel has guide, working part made of deformable teeth, calibration parts, and diverging groove made in the guide and working parts. The expanded end of the groove is in coincident with the origin of the guiding part. The groove that ends at the last deformable tooth of the working part has radius-shaped cross-section.
EFFECT: enhanced quality of the press joint and expanded functional capability.
FIELD: machine engineering, namely equipment for dismounting press-fit joints, possibly restoration of electric machines.
SUBSTANCE: apparatus includes housing with platforms for horizontal and vertical motions. Part to be dismounted is placed on horizontal motion platform and it is fed to stripping mechanism. The last is joined with vertical motion platform by means of fastening members and it is provided with adjusted grips supporting heating members with possibility of their axial movement. Heating members are in the form of nozzles for alternating feed of hot and cooled air.
EFFECT: reduced axial errors between dismounted part and stripping mechanism, lowered efforts for stripping parts.
5 cl, 5 dwg
FIELD: mechanical engineering.
SUBSTANCE: device comprises the mechanism for locking pressed parts made of an extensible sleeve. The first power hydraulic cylinder is used for moving parts and can rotate between two vertical unmovable pillars. The pillars are pivotally connected in pair with movable vertical pillars through the top and bottom horizontal clamps. The extensible spring-loaded stop with the drive and the first hydraulic cylinder are axially aligned. The first power hydraulic cylinder receives the second power hydraulic cylinder whose rod is provided with first center and spring. One end of the spring co-operates with the piston, and other end of the spring co-operates with the face of the extensible sleeve. The extensible stop receives the second center with the stack of plate springs that is coaxial to the first center. The bottom clams are provided with a lifting-rotating device.
EFFECT: reduced labor consumption for making and simplified structure.
1 cl, 2 dwg
FIELD: devices designed for simplifying procedures of assembling/disassembling units.
SUBSTANCE: crank stripper includes cross piece 1 supporting power mechanism in the form of one-way telescopic hydraulic cylinder 2 having thrust rod 3 for shaft of crank 14; mechanism for forced closing of foots having cylindrical discs 8, 9, paired plates 10 and double-arm levers 4,5. One arm is used for engaging with crank; other arm of is cone one and it may rest upon lateral surface of cylindrical disc secured to lateral side of cross piece. Double-arm lever whose arms are mutually inclined by obtuse angle is jointly mounted through paired plates in center of disc. Articulation joint of lever is mounted in edge portion of second lever arm on line of inner surface of first lever arm.
EFFECT: intensified clamping of part by foots, enhanced efficiency, lowered cost price of working operations.
FIELD: mechanical engineering.
SUBSTANCE: method comprises gripping the part to be dismounted and applying axial load by means of at least two ties and, e.g., hydraulic cylinder. The rod of the hydraulic cylinder cooperates with the face of the shaft. The ties are interconnected via a plate opposite to the end of the part to be dismounted. Each of the ties is provided with the eccentric groove. The ties are set in the openings in the part to be dismounted for permitting engagement by their step defined by the eccentric groove. Between the wall of the opening of the part to be dismounted and each tie is sickle-shaped bushing member. The hydraulic cylinder abuts against the plate so that to provide relationships D1 ≤ D2, b ≥ H, e = h, where D1 is the outer diameter of the tie, D2 is the diameter of the opening in the part to be dismounted, b is the width of the eccentric groove, H is the thickness of the part, e is the eccentricity of the groove with respect to the axis of the tie, and h is the maximum thickness of the sickle-shaped bushing member.
EFFECT: expanded functional capabilities.
1 cl, 2 dwg
FIELD: machine engineering, namely mechanical strippers.
SUBSTANCE: stripper includes traverse bar with grips, screw having two outer threads with different pitches; main detachable sleeve mounted by thread whose pitch is less than that of said screw; additional threaded sleeve mounted by second thread of said screw; holder embracing both sleeves, fixed relative to them in angular direction and resting by its inner shoulder upon end of main sleeve. Inner shoulder is formed on one end of holder; other open end of holder is arranged in through opening of traverse bar and it is rigidly joined with said bar. Threads of powerful screw have similar sign; additional sleeve has outer flange spaced from open end of holder by interval determined according to relation K = B1(H2/H1 - 1), where K - interval between outer flange of additional sleeve and open end of holder; B1 - displacement (caused by main sleeve) of part stripped by means of stripper; H2 - thread pitch of additional sleeve; H1 - thread pitch of main sleeve. Sleeves are mutually spaced by interval T exceeding value of mutual convergence of sleeves.
EFFECT: simplified usage of stripper.
FIELD: railway road machine engineering, possibly repairing of railroad machines.
SUBSTANCE: press includes frame having base and two struts mutually joined by means of two columns; working cylinder mounted on one of said struts; force and supporting traverse bars with rollers. Said traverse bars are arranged between struts of press frame and they are mounted with possibility motion on rollers along columns of power frame. Force traverse bar is mounted with possibility of fixing it to columns.
EFFECT: enlarged manufacturing possibilities, improved quality of combining wheel pairs, simplified design of press.