CN213969761U - Quick positioning device for workpiece welding - Google Patents

Abstract

The utility model provides a quick positioning device for welding workpieces, which is used for clamping pin shaft parts for welding, a positioning clamp comprises a V-shaped block, a blocking plate corresponding to the V-shaped block and a clamping component for connecting the V-shaped block and the blocking plate, a V-shaped groove is arranged on the V-shaped block, the pin shaft parts are arranged in the V-shaped groove, the clamping component comprises expansion plates arranged at the two sides of the V-shaped groove and two-way screw rods connected to the two expansion plates, and the limiting rod is movably inserted into the V-shaped block, the expansion plate is connected with the V-shaped block and the blocking plate, threads with opposite rotating directions are arranged at two ends of the bidirectional screw rod, a corresponding clamping nut is sleeved on the threads in a matched mode, one end of the limiting rod extends into the V-shaped groove, the pin shaft part can be lapped on the end portion of the limiting rod, a limiting nut is sleeved on the other end of the limiting rod in a threaded mode, and the limiting nut is attached to the outer side surface of the V-shaped block. Utilize the expansion plate to carry out the centre gripping to round pin axle type part, improve round pin axle type part stability in processing, prevent that round pin axle type part from taking place to rotate.

Description

Quick positioning device for workpiece welding

Technical Field

The utility model relates to a location processing technology field especially relates to a quick positioner is used in work piece welding.

Background

When the pin shaft type parts are welded, the pin shaft type parts are generally subjected to axis positioning by using a V-shaped block, the V-shaped block and the pin shaft type parts are locked by using flat tongs, and welding equipment is started to weld the pin shaft type parts. In the welding process, the V-shaped block and the flat tongs only clamp the pin shaft parts on three sides, the contact area is small, and the friction force on the pin shaft parts cannot effectively prevent the pin shaft parts from rotating in the welding process.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: prevent the rotation of the pin shaft parts during processing.

The utility model provides a technical scheme that its technical problem adopted is: a quick positioning device for workpiece welding is used for clamping pin shaft parts for welding, and comprises a positioning clamp, wherein the positioning clamp comprises a V-shaped block, a blocking plate corresponding to the V-shaped block and a clamping assembly for connecting the V-shaped block and the blocking plate, a V-shaped groove is formed in the V-shaped block, the pin shaft parts are installed in the V-shaped groove, the clamping assembly comprises a transverse clamping assembly, a longitudinal clamping assembly and a limiting assembly, the longitudinal clamping assembly is connected with the transverse clamping assembly, the limiting assembly is inserted into the V-shaped block, the transverse clamping assembly comprises expansion plates arranged on two sides of the V-shaped groove, the expansion plates are connected with the V-shaped block and the blocking plate, the longitudinal clamping assembly comprises two bidirectional screws connected to the expansion plates, opposite-turning threads are formed in two ends of the bidirectional screws, and corresponding clamping nuts are sleeved on the threads, clamping nut slidable ground joint is in on the closure plate, spacing subassembly alternates including the activity restriction pole in the V type piece, the one end of restriction pole stretches into V type inslot, but the overlap joint of round pin axle type part extremely on the tip of restriction pole, the restriction pole with the tip that V type groove corresponds is semicircular fan-shaped structure, the plane of fan-shaped structure with the tip contact of round pin axle type part, another end screw thread cover of restriction pole is equipped with the restriction nut, the restriction nut laminating extremely the outside surface of V type piece.

Further, the expansion plate includes the fixed plate and alternates and be in fly leaf in the fixed plate, the fixed plate joint is in the closure plate, the fly leaf joint is in the V type piece, the fixed plate with be connected with the extensible member between the fly leaf.

Further, on the closure plate with all open the joint groove that corresponds with the expansion plate on the V type piece, the joint groove is parallel to each other, the fly leaf with the equal slidable joint of fixed plate is in the joint inslot.

Furthermore, a sliding hanging table is arranged on the fixed plate and the movable plate in a protruding mode, the sliding hanging table is arranged on two side faces of the telescopic plate, and the sliding hanging table is matched with the clamping groove.

Furthermore, the movable plate is provided with a rotating hole corresponding to the bidirectional screw, the diameter of the rotating hole is larger than the maximum diameter of the bidirectional screw, and the bidirectional screw can slidably penetrate through the rotating hole.

Furthermore, the extensible member is an extension spring, one end of the extensible member is fixedly connected to the fixed plate, and the other end of the extensible member is fixedly connected to the movable plate.

Furthermore, it has the holding tank to open on the fixed plate, the notch orientation of holding tank the closure plate sets up, extensible member fixed mounting be in on the tank bottom of holding tank.

Furthermore, a control screw hole is formed in the end portion of one side of the bidirectional screw rod, and a control screw is inserted into the control screw hole in a matched mode.

The beneficial effects of the utility model are that, utilize the expansion plate to apply corresponding pretightning force to the round pin axle type part, later can be with the help of the rotation of two-way screw rod in the expansion plate, order about the centre gripping nut on the two-way screw rod and produce the removal, support the expansion plate to the round pin axle type part until centre gripping nut, under the support of centre gripping nut, the expansion plate follows two-way screw rod centre gripping to round pin axle type part on, can guarantee the welded in-process finally, support of five directions that round pin axle type part received holds, improve the frictional force that round pin axle type part surface received, can effectually prevent round pin axle type part to take place to rotate.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a perspective view of a preferred embodiment of the positioning fixture of the present invention;

FIG. 2 is a right side view of the localization fixture of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a front view of the localization fixture of FIG. 1;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

in the figure: the device comprises a pin shaft part-50, a positioning clamp-100, a V-shaped block-10, a blocking plate-20, a clamping component-30, a V-shaped groove-40, a transverse clamping component-310, a longitudinal clamping component-320, a telescopic plate-311, a bidirectional screw-321, a thread-322, a clamping nut-323, a fixed plate-312, a movable plate-313, a telescopic component-314, a clamping groove-210, a sliding hanging table-316, a rotating hole-315, a receiving groove-317, a control screw hole-322, a control screw-324, a limiting component-330, a limiting rod-331, a limiting nut-332, a limiting groove-110 and a limiting bump-332.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

As shown in fig. 1 to 5, the utility model provides a quick positioner 100 is used in work piece welding for the centre gripping round pin axle type part 50 carries out welding process, positioning fixture 100 includes V type piece 10, closure plate 20 that corresponds with V type piece 10, and the centre gripping subassembly 30 of connecting V type piece 10 and closure plate 20, closure plate 20 supports and holds on selling axle type part 50 to V type piece 10, with the help of the drawing of centre gripping subassembly 30, closure plate 20 and V type piece 10 exert the pretightning force to selling axle type part 50, tentatively fix a position selling axle type part 50, it has V type groove 40 to open on the V type piece 10, sell axle type part 50 and install to V type inslot 40, can carry out preliminary axle center location to selling axle type part 50 with the help of the cross-sectional shape of V type groove 40, when selling axle type part 50 puts into V type groove 40 promptly, the cell wall laminating of V type groove 40 supports and holds on the outside periphery of selling axle type part 50, centre gripping subassembly 30 includes horizontal centre gripping subassembly 310, The vertical clamping component 320 is connected with the horizontal clamping component 310, the limiting component 330 is inserted in the V-shaped block, the horizontal clamping component 310 comprises expansion plates 311 arranged on two sides of the V-shaped groove 40, the expansion plates 311 are connected with the V-shaped block 10 and the blocking plate 20, the distance between the V-shaped block 10 and the blocking plate 20 can be reduced by means of the self-expansion characteristic of the expansion plates 311, the two expansion plates 311 simultaneously pull the blocking plate 20 to the V-shaped block 10, the blocking plate 20 can apply pre-tightening force to the pin shaft part 50 to be processed, the pin shaft part 50 is preliminarily fixed in the V-shaped groove 40, the subsequent further clamping of the pin shaft part 50 is facilitated, the vertical clamping component 320 comprises two-way screw rods 321 connected to the two expansion plates 311, the two expansion plates 311 are jointly connected with the two expansion plates 321, the positioning connection of the two expansion plates 311 can be realized, and the positions of the expansion plates 311 relative to the blocking plate 20 and the V-shaped block 10 are determined, the two ends of the two-way screw 321 are provided with threads 322 with opposite turning directions, the threads 322 are sleeved with corresponding clamping nuts 323 in a matching way, and the clamping nuts 323 can be clamped on the blocking plate 20 in a sliding way. After the two-way screw 321 rotates, the clamping nuts 323 axially slide along the two-way screw 321 until the clamping expansion plate 311 is attached to the pin shaft type part 50, the center of the two-way screw 321 is located above the V-shaped groove 40, the rotation directions of the threads 322 at the two ends of the two-way screw 321 are opposite, when the two-way screw 321 rotates in a certain rotation direction, the two clamping nuts 323 cannot rotate under the blocking of the blocking plate 20 and can only slide in the blocking plate 20, the two clamping nuts 323 can approach or separate from each other so as to support the expansion plate 311 to the part, the limiting component 330 comprises a limiting rod 331 movably inserted in the V-shaped block 10, one end of the limiting rod 331 extends into the V-shaped groove 40, the pin shaft type part 50 can be lapped on the end of the limiting rod 331, the end of the limiting rod 331 extending into the V-shaped groove is in a semicircular sector structure, the plane of the sector structure is in contact with the end of the pin shaft type part 50, and the other end of the limiting nut 331 is sleeved with a thread, the restraining nut 332 is attached to the outer side surface of the V-block 40.

The restricting rod 331 is fixed to the V-block 10 by the restricting nut 332, and the fan-shaped structure on the restricting rod 331 carries the pin-like member 50, thereby fixing the position of the work in the height direction with respect to the V-block 10. The pin shaft part 50 is attached to the V-shaped groove 40, the blocking plate 20 covers the surface of the pin shaft part 50, the expansion plate 311 is arranged between the blocking plate 20 and the V-shaped block 10, the blocking plate 20 can be pulled to approach the V-shaped block 10 by means of elastic contraction of the expansion plate 311, the pin shaft part 50 can be pre-positioned through elasticity of the expansion plate 311, namely the pin shaft part 50 is fixed relative to the V-shaped groove 40, and then the blocking plate 20 and the V-shaped block 10 are clamped by clamps such as flat tongs. The two-way screw 321 is inserted into the two expansion plates 311, while the two-way screw 321 is still inside the blocking plate 20, the clamping nut 323 on the two-way screw 321 is inserted into a sliding groove (not shown) of the blocking plate 20 for accommodating the expansion plates 311, and a groove wall of the sliding groove limits the degree of freedom of the clamping nut 323 in the rotation direction, that is, the clamping nut 323 can only slide in the sliding groove.

When the bidirectional screw 321 is driven to rotate in the same direction in the expansion plate 311, the two clamping nuts 323 can approach or separate from each other, and further the expansion plate 311 is driven to approach or separate from the V-shaped groove 40 synchronously until the expansion plate 311 is attached to the side surface of the pin shaft part 50, as can be seen from the figure, the inside of the V-shaped block 10 and the blocking plate 20 are both provided with a hanging table for clamping and fixing the expansion plate 311, which is limited by the hanging table to the expansion plate 311, when the clamping nuts 323 support the expansion plate 311, the expansion plate 311 slides along the axial direction of the bidirectional screw 321, and the friction force between the pin shaft part 50 and the expansion plate 311 can be increased by fixing the clamping nuts 323 to the pin shaft part 50, so that the locking force applied to the pin shaft part 50 during welding is increased, and the pin shaft part 10 is prevented from rotating in the V-shaped groove 40.

Preferably, the V-shaped block 10 is provided with a limiting groove 110 in the thickness direction, the limiting rod 331 is slidably inserted into the limiting groove 110, a limiting protrusion 332 corresponding to the groove width of the limiting groove 110 is convexly arranged on the limiting rod 331, the limiting protrusion 332 is fittingly arranged in the limiting groove 110, and the limiting protrusion 332 is attached to the groove wall of the limiting groove 110. It can be understood that, under the clamping of the limiting projection 332 and the limiting nut 332, the position of the limiting rod 331 relative to the V-shaped block 10 is fixed, and further, the position of the supporting pin shaft-like component 50 by the limiting rod 331 is also fixed relatively.

Preferably, the expansion plate 311 includes a fixed plate 312 and a movable plate 313 inserted into the fixed plate 312, the fixed plate 312 is clamped in the blocking plate 20, the movable plate 313 is clamped in the V-shaped block 10, and an expansion member 314 is connected between the fixed plate 312 and the movable plate 313. Under the connection of the telescopic member 314, the movable plate 313 moves in the fixed plate 312, so that the movable plate 313 drives the blocking plate 20 to approach the V-shaped block 10.

Preferably, the blocking plate 20 and the V-shaped block 10 are both provided with a clamping groove 210 corresponding to the retractable plate 311, the clamping grooves 210 are parallel to each other, and the movable plate 313 and the fixed plate 312 are both slidably clamped in the clamping grooves 210. By means of the matching relationship between the clamping groove 210 and the expansion plate 311, the expansion plate 311 can slide in the clamping groove 210, that is, the two ends of the expansion plate 311 slide into the clamping groove 210 from the two sides of the blocking plate 20 and the V-shaped block 10, thereby connecting the blocking plate 20 and the V-shaped block 10.

Preferably, the fixed plate 312 and the movable plate 311 are convexly provided with a sliding hanging platform 316, the sliding hanging platform 316 is provided on two side surfaces of the telescopic plate 311, and the sliding hanging platform 316 is engaged with the engaging groove 210. Through the matching relationship between the sliding hanging platform 316 and the clamping groove 210, the sliding hanging platform 316 can drive the blocking plate 20 to approach the V-shaped block 10.

Preferably, the movable plate 313 is provided with a rotation hole 315 corresponding to the bidirectional screw 321, the diameter of the rotation hole 315 is larger than the maximum diameter of the bidirectional screw 321, and the bidirectional screw 321 is slidably inserted into the rotation hole 315.

Preferably, the telescopic member 314 is an extension spring, one end of the telescopic member 314 is fixedly connected to the fixed plate 312, and the other end of the telescopic member 314 is fixedly connected to the movable plate 313. By means of the elastic potential energy of the extension spring, the movable plate 313 can be pulled to move towards the fixed plate 312, and then the blocking plate 20 is pulled to approach the V-shaped plate, so that a pre-tightening force is applied to the pin-shaft type part 50.

Preferably, the fixing plate 312 is provided with a receiving groove 317, a notch of the receiving groove 317 is disposed toward the blocking plate 20, and the expansion member 314 is fixedly mounted on a bottom of the receiving groove 317. One end of the movable plate 313 is slidably inserted into the receiving groove 317, and the other end is fastened to the blocking plate 20, so that the movable plate 313 can pull the blocking plate 20 along the receiving groove 317 under the pulling of the telescopic member 314, thereby limiting the movement path of the blocking plate 20.

Preferably, a control screw hole 322 is formed at one end of the bidirectional screw rod 321, and a control screw 324 is fittingly inserted into the control screw hole 322. After the control screw 324 is locked into the control screw hole 322, the control screw 324 drives the two-way screw 321 to rotate, thereby controlling the sliding process of the clamping nut 323 on the two-way screw 321.

The use method of the above-mentioned optimal positioning fixture 100 for punching shaft parts includes that the pin shaft parts 50 are tiled and arranged in the V-shaped groove 40, the circumferential surface of the pin shaft parts 50 is attached to the groove wall of the V-shaped groove 40, the axial lead of the pin shaft parts 50 is arranged in parallel to the symmetry line of the V-shaped groove 40, then the baffle is overlapped on the pin shaft parts 50, the stretched expansion plate 311 is clamped in the clamping groove 210, and the baffle is attached to the pin shaft parts 50 by means of the elastic potential energy of the expansion part 314 in the expansion plate 311, so as to apply pre-tightening force to the pin shaft parts 50. Then, the bidirectional screw 321 is inserted into the rotating hole 315, the control screw 324 is locked in the control screw hole 322, the bidirectional screw 321 is controlled to rotate in the rotating hole 315 through the control screw 324, the clamping nut 323 on the bidirectional screw 321 is driven by the screw teeth to abut against the expansion plate 311, the expansion plate 311 is pushed to abut against the pin shaft part 50, and the pin shaft part 50 can be effectively prevented from rotating during processing.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (8)

1. The utility model provides a quick positioner is used in work piece welding for centre gripping axis class part carries out welding process, its characterized in that: comprises a positioning clamp, the positioning clamp comprises a V-shaped block, a blocking plate corresponding to the V-shaped block and a clamping assembly for connecting the V-shaped block and the blocking plate, a V-shaped groove is formed in the V-shaped block, pin shaft parts are installed in the V-shaped groove, the clamping assembly comprises a transverse clamping assembly, a longitudinal clamping assembly for connecting the transverse clamping assembly and a limiting assembly inserted in the V-shaped block, the transverse clamping assembly comprises expansion plates arranged on two sides of the V-shaped groove, the expansion plates are connected with the V-shaped block and the blocking plate, the longitudinal clamping assembly comprises two bidirectional screws connected to the two expansion plates, threads with opposite rotation directions are formed in two ends of the bidirectional screws, corresponding clamping nuts are sleeved on the threads in a matching manner, and the clamping nuts are slidably clamped on the blocking plate, the limiting assembly is inserted in the limiting rod in the V-shaped block in a movable mode, one end of the limiting rod stretches into the V-shaped groove, the pin shaft part can be in lap joint with the end portion of the limiting rod, the limiting rod and the end portion corresponding to the V-shaped groove are of semicircular fan-shaped structures, the plane of each fan-shaped structure is in contact with the end portion of the pin shaft part, a limiting nut is sleeved on the other end of the limiting rod in a threaded sleeve mode, and the limiting nut is attached to the outer side surface of the V-shaped block.

2. The quick positioning device for workpiece welding according to claim 1, characterized in that: the expansion plate includes the fixed plate and alternates and is in fly leaf in the fixed plate, the fixed plate joint is in the closure plate, the fly leaf joint is in the V type piece, the fixed plate with be connected with the extensible member between the fly leaf.

3. The rapid positioning device for workpiece welding according to claim 2, characterized in that: on the closure plate with all open the joint groove that corresponds with the expansion plate on the V type piece, the joint groove is parallel to each other, the fly leaf with the equal slidable joint of fixed plate is in the joint inslot.

4. The rapid positioning device for workpiece welding according to claim 3, characterized in that: the fixed plate with the fly leaf epirelief is equipped with the slip string platform, the slip string platform is established on the both sides face of expansion plate, the slip string platform cooperate in the joint groove.

5. The rapid positioning device for workpiece welding according to claim 4, characterized in that: the movable plate is provided with a rotating hole corresponding to the bidirectional screw rod, the diameter of the rotating hole is larger than the maximum diameter of the bidirectional screw rod, and the bidirectional screw rod can be slidably inserted into the rotating hole.

6. The rapid positioning device for workpiece welding according to claim 2, characterized in that: the telescopic piece is an extension spring, one end of the telescopic piece is fixedly connected to the fixed plate, and the other end of the telescopic piece is fixedly connected to the movable plate.

7. The rapid positioning device for workpiece welding according to claim 6, wherein: open on the fixed plate and have the holding tank, the notch orientation of holding tank the closure plate sets up, extensible member fixed mounting be in on the tank bottom of holding tank.

8. The rapid positioning device for workpiece welding according to claim 7, characterized in that: and a control screw hole is formed in the end part of one side of the bidirectional screw rod, and a control screw is inserted into the control screw hole in a matching mode.

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