CN-115519297-B - Friction stir welding fixture

Abstract

The invention relates to a fixture clamp, in particular to a friction stir welding fixture clamp. The friction stir welding fixture is capable of flexibly adjusting the position according to the size of a workpiece, rapidly assembling and disassembling the workpiece, and has high stability and accuracy. The stirring friction welding fixture comprises a I-shaped supporting plate, sliding blocks, clamping rods and the like, wherein the I-shaped supporting plate is provided with two sliding blocks in a bilateral symmetry mode, and the clamping rods used for clamping workpieces are welded on the outer side faces of the two sliding blocks. The positioning angle and the positioning position can be flexibly adjusted according to the sizes of the workpieces through the mutual matching of the sliding blocks, the clamping rods and the clamping heads, so that the workpieces with different sizes are fixedly clamped, the workpieces can be rapidly clamped and disassembled through the fastening device and the clamping device, and the stability and the accuracy of workpiece clamping are greatly improved.

Inventors

• WU JINGRAN

Assignees

• 承德石油高等专科学校

Dates

Publication Date

20260505

Application Date

20220913

Claims (5)

1. 1. The utility model provides a friction stir welding frock clamp, including I-shaped backup pad (1), slider (2), clamping bar (3) and first fastening screw (4), two sliders (2) are installed to I-shaped backup pad (1), clamping bar (3) that are used for pressing from both sides tight work piece are all fixedly connected with to the lateral surface of two sliders (2), I-shaped backup pad (1) front and back both sides all are connected with two piece at least first fastening screw (4) that are used for fastening slider (2), the front and back both sides of every slider (2) are all screwed by first fastening screw (4) and are extruded, characterized by still including fastener (5) and clamping device (6), fastener (5) that are used for accurate locking work piece are all installed to slider (2) inside, clamping device (6) that are used for pressing from both sides tight work piece are all installed on two clamping bar (3) upper portions; The fastening device (5) comprises a lock nut (51), a loading barrel (52), a half-threaded rod (53), a first reset spring (54), an elliptical clamping rod (55), a limiting block (56), a driven bevel gear set (57) and a driving bevel gear (58), wherein the lock nut (51) is fixedly connected to the inner sides of the two sliding blocks (2), the loading barrel (52) is arranged in the two lock nuts (51), two half-threaded rods (53) which are vertically symmetrical are arranged in the two loading barrels (52), the first reset spring (54) is connected between the left side surface and the right side surface of the two half-threaded rods (53) and the loading barrel (52), the elliptical clamping rod (55) for supporting and clamping the two half-threaded rods (53) is arranged between the two half-threaded rods (53), the limiting block (56) for limiting the rotation range of the elliptical clamping rod (55) are fixedly connected to the opposite side barrel walls of the two loading barrels (52), the driven bevel gear set (57) are connected to the inner sides of the two elliptical clamping rods (55), the driving bevel gear set (58) is arranged on the lower side surface of the middle of the work support plate (1), and the driving bevel gear (58) is meshed with the two vertical bevel gears (57) in the driven bevel gear set (57); The clamping device (6) comprises a clamping head (61) and a second fastening screw (63), the clamping head (61) is arranged on the clamping rod (3), a threaded hole (62) is formed in the right part of the clamping head (61), the second fastening screw (63) used for fastening the clamping head (61) is connected in the threaded hole (62), the second fastening screw (63) is tightly attached to the right side surface of the clamping rod (3), and the second fastening screw (63) penetrates through the clamping rod (3) to be connected with the clamping head (61); The locking device comprises a connecting cylinder (91), a penta-edge rod (92), a locking ring (93), a porous disc (94) and a second reset spring (95), wherein the connecting cylinder (91) is fixedly connected to the rod part of the driving bevel gear (58), the penta-edge rod (92) is arranged in the connecting cylinder (91), the locking ring (93) is fixedly connected to the penta-edge rod (92) through the connecting cylinder (91), the porous disc (94) used for being matched with the locking ring (93) to lock the driven bevel gear set (57) is fixedly connected to the lower side surface of the middle part of the I-shaped supporting plate (1), and the locking rod part of the locking ring (93) is clamped with the hole on the porous disc (94), and the second reset spring (95) is connected between the connecting cylinder (91) and the locking ring (93).
2. 2. The friction stir welding fixture according to claim 1, further comprising guide strips (7), wherein the front side and the rear side of the two sliding blocks (2) are fixedly connected with the two guide strips (7) for guiding the sliding blocks (2).
3. 3. A friction stir welding tooling clamp according to claim 2, further comprising a shielding plate (8), wherein the I-shaped support plate (1) is fixedly connected with the shielding plate (8) for shielding the fastening device (5).
4. 4. A friction stir welding fixture according to claim 3, wherein anti-slip grooves (10) are formed at the contact positions of the front side and the rear side of the two sliding blocks (2) and the first fastening screw (4).
5. 5. The friction stir welding fixture according to claim 4, further comprising a first rubber pad (11) and a second rubber pad (12), wherein the first rubber pad (11) is fixedly connected to the upper side face of the I-shaped supporting plate (1), and the second rubber pads (12) are fixedly connected to the upper side faces of the two sliding blocks (2).

Description

Friction stir welding fixture Technical Field The invention relates to a fixture clamp, in particular to a friction stir welding fixture clamp. Background The friction stir welding method is the same as conventional friction welding. Friction stir welding also uses frictional heat and plastic deformation heat as welding heat sources. The difference is that the friction stir welding process is that a cylinder or a stirring pin with other shapes (such as a cylinder with threads) extends into the joint of the workpiece, and the stirring pin is rubbed with the material of the welded workpiece by the high-speed rotation of a welding head, so that the material temperature of the connecting part is increased and softened. While friction stir welding the materials to complete the weld. The welding fixture is used for fixing the workpiece and realizing the welding positioning of the workpiece. The existing welding fixture can only be used for fixing a workpiece, but cannot flexibly adjust the position according to the size of the workpiece, cannot rapidly assemble and disassemble the workpiece, and lacks sufficient stability and accuracy, so that the workpiece is very easy to displace and fall off in the processing process, and the connection size and precision are affected. Disclosure of Invention The invention aims to overcome the defects that the position cannot be flexibly adjusted according to the size of a workpiece, the workpiece cannot be rapidly assembled and disassembled, and the sufficient stability and accuracy are lacking. The technical scheme includes that the friction stir welding fixture comprises an I-shaped supporting plate, sliding blocks, clamping rods, first fastening screws, fastening devices and clamping devices, wherein the two sliding blocks are symmetrically arranged on the left side and the right side of the I-shaped supporting plate, the clamping rods used for clamping workpieces are welded on the outer side faces of the two sliding blocks, the first fastening screws used for fastening the sliding blocks are screwed on the front side and the rear side of the I-shaped supporting plate, the front side and the rear side of each sliding block are screwed and extruded by the first fastening screws, the fastening devices used for accurately locking the workpieces are arranged inside the two sliding blocks, and the clamping devices used for clamping the workpieces are arranged on the upper parts of the two clamping rods. Further, fastener is including lock nut, load section of thick bamboo, half threaded rod, first reset spring, oval chucking pole, the stopper, driven bevel gear group and drive bevel gear, lock nut has all been welded to the inboard of two sliders, load section of thick bamboo has all been cup jointed to the side-to-side slip in two lock nuts, two half threaded rods of symmetry about all sliding mounting in two load section of thick bamboo, two half threaded rods constitute a threaded rod, two threaded rod spiral direction is unanimous, all be connected with first reset spring between the side about two half threaded rods and the load section of thick bamboo, be placed between two half threaded rods and be used for opening the oval chucking pole of two half threaded rods chucking, all welded two stoppers that are used for restricting oval chucking pole rotation range in the opposite side section of thick bamboo wall of two load section of thick bamboo, the medial surface of two oval chucking poles all is connected with driven bevel gear group, driven bevel gear group comprises two vertical bevel gear, drive bevel gear is installed to the downside rotation in the worker shape backup pad, two vertical bevel gear intermeshing in drive bevel gear and the driven bevel gear group. Further, the clamping device comprises a clamping head and a second fastening screw, the clamping head is installed on the clamping rod in a vertical sliding mode, a threaded hole is formed in the right portion of the clamping head, the second fastening screw used for fastening the clamping head is connected in the threaded hole in an screwed mode, the second fastening screw clings to the right side face of the clamping rod, and the second fastening screw penetrates through the clamping rod to be screwed with the clamping head. Further, the sliding block comprises guide strips, and two guide strips for guiding the sliding blocks are welded on the front side and the rear side of the two sliding blocks. Further, the shielding plate is also included, and the shielding plate for shielding the fastening device is welded on the left and right symmetry of the I-shaped supporting plate. Further, the locking device comprises a connecting cylinder, a penta-edge rod, a locking ring, a porous disc and a second reset spring, wherein the connecting cylinder is welded at the rod part of the driving bevel gear, the penta-edge rod is installed in the connecting cylinder in a vertically sliding mode, the locking ring is welde