Positioning jig for metal workpiece machining

Abstract

The utility model relates to the technical field of metal workpiece machining, in particular to a positioning jig for metal workpiece machining, which comprises a workbench, a mounting groove is arranged at the top of the workbench, a moving structure is arranged in the mounting groove, and two positioning structures are arranged on two sides of the outer surface of the moving structure. When two sections of steel pipes are welded, the two sections of steel pipes are placed into the rotating rings correspondingly, the hinging rods on the two sides extrude the hinging rods through driving of the two pneumatic cylinders, and therefore the bottoms of the side claws can be turned over inwards, the steel pipes are fixed, then welding can be conducted, and after one face is welded, clamping blocks are pulled outwards, at the moment, first springs are stretched, the clamping blocks are separated from clamping grooves, and the two sections of steel pipes are welded. At the moment, the rotating ring can be shifted to rotate in the rotating rail, the clamping block is loosened after the rotating ring rotates to the needed position, the first spring is reset, the clamping block is clamped in the clamping groove again to be fixed, and therefore the purpose that the two sections of pipes can be turned over without loosening the positioning jig is achieved, and the working efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of metal workpiece processing technology, specifically a positioning fixture for metal workpiece processing. Background Technology

[0002] Metal workpiece processing requires various equipment and tools, such as lathes, milling machines, grinding machines, punching machines, die-casting machines, laser cutting machines, and welding machines. These machines can precisely process metal workpieces of various shapes and sizes to meet diverse industrial needs.

[0003] The raw materials for metal workpiece processing include various metal plates, pipes, profiles, and metal powders. Currently, existing welding positioning fixtures for metal pipes have certain shortcomings in practical use: existing metal pipe positioning fixtures can only simply fix and align the two ends of the pipe, lacking a rotatable structure. As a result, after one side of the pipe is welded, the positioning structure needs to be loosened and the two sections of the pipe rotated. During this process, the weld seam of the pipe is not firm and there is a risk of breakage, which affects normal metal processing. Based on the shortcomings of existing technology, this utility model designs a positioning fixture for metal workpiece processing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a positioning fixture for metal workpiece processing, which has the advantage of allowing two sections of pipe to be flipped without loosening the positioning fixture.

[0005] This utility model provides the following technical solution: a positioning fixture for processing metal workpieces, including a worktable, a mounting groove on the top of the worktable, a movable structure inside the mounting groove, and two positioning structures on both sides of the outer surface of the movable structure; the two positioning structures include columns, rotating rails installed inside the two columns, rotating rings slidably installed inside the two rotating rails, connecting plates installed inside the two rotating rings, hinge blocks installed at one bottom end of the two connecting plates, side claws hingedly installed on both sides inside the two hinge blocks, hinge rods hingedly installed at both top ends of the two side claws, a pneumatic cylinder hinged between the two hinge rods, six slots on one side of the outer surface of the two rotating rings, locking blocks movably installed on one side of the two columns, the two locking blocks locking inside the slots, first springs installed on both sides of the two locking blocks, and one end of the two first springs fixedly connected to the columns.

[0006] As a preferred embodiment of this utility model, the bottom of the two hinge blocks is provided with an inner groove, and a second spring is installed inside the two inner grooves.

[0007] As a preferred embodiment of this utility model, one end of each of the two second springs is equipped with a movable column, and the bottom of each movable column is equipped with a fixing claw.

[0008] As a preferred embodiment of this utility model, the movable structure includes a bidirectional screw, which is rotatably connected to the mounting groove.

[0009] As a preferred embodiment of this utility model, one end of the bidirectional screw passes through the worktable and extends to the outside of the worktable, and a handwheel is installed at the end of the bidirectional screw extending to the outside of the worktable.

[0010] As a preferred technical solution of this utility model, threaded blocks are threaded on both sides of the outer surface of the bidirectional screw, and the two threaded blocks are tightly attached to the inner wall of the mounting groove on all four sides.

[0011] As a preferred technical solution of this utility model, the tops of the two threaded blocks are fixedly connected to the two columns.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This positioning fixture for metal workpiece processing, through its positioning structure, allows for the placement of two steel pipe sections into a rotating ring during welding. Driven by two pneumatic cylinders, the hinge rods on both sides are pressed together, causing the bottom of the side claws to fold inwards, thus fixing the steel pipe. Welding can then proceed. After welding one side, pulling the locking block outwards stretches the first spring, disengaging the locking block from the slot. The rotating ring can then be moved to rotate within the rotating rail. Once the desired position is reached, the locking block is released, the first spring resets, and the locking block is locked back into the slot. This achieves the goal of flipping the two pipe sections without releasing the positioning fixture, improving the device's working efficiency.

[0014] 2. This positioning fixture for metal workpiece processing, through its positioning structure, lifts the steel pipe upward when the bottom of the two side claws is folded inward by the pneumatic cylinder, so that it contacts the fixed claw. At this time, the second spring is compressed and contracted, and the steel pipe is stably clamped by the fixed claw and the two side claws. By setting the fixed claw, the device is not limited to clamping round pipes, but can also clamp other steel pipes including square or polygonal ones, thus improving the applicability of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the movable structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the rotating ring structure of this utility model;

[0018] Figure 4This is a schematic diagram of the connecting plate structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the second spring structure of this utility model.

[0020] In the diagram: 1. Workbench; 2. Mounting slot; 3. Moving structure; 31. Bidirectional screw; 32. Handwheel; 33. Threaded block; 4. Positioning structure; 41. Column; 42. Rotating rail; 43. Rotating ring; 44. Slot; 45. Block; 46. First spring; 47. Connecting plate; 48. Hinge block; 49. Side claw; 410. Hinge rod; 411. Pneumatic cylinder; 412. Inner groove; 413. Second spring; 414. Movable column; 415. Fixed claw. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 A positioning fixture for metal workpiece processing includes a worktable 1. A mounting groove 2 is provided on the top of the worktable 1. A movable structure 3 is disposed inside the mounting groove 2. Two positioning structures 4 are provided on both sides of the outer surface of the movable structure 3. The two positioning structures 4 include columns 41. Rotating rails 42 are installed inside the two columns 41. Rotating rings 43 are slidably installed inside the two rotating rails 42. Connecting plates 47 are installed inside the two rotating rings 43. Hinge blocks 48 are installed at one bottom end of the two connecting plates 47. Side claws 49 are hingedly installed on both sides inside the two hinge blocks 48. Hinge rods 410 are hingedly installed at both ends of the top of the two side claws 49. A pneumatic cylinder 411 is hinged between the two hinge rods 410. Six slots 44 are provided on one side of the outer surface of the rotating rings 43. Locking blocks 45 are movably installed on one side of the two columns 41. The two locking blocks 45 are locked inside the slots 44. First springs 46 are installed on both sides of the two locking blocks 45. One end of the two first springs 46 is fixedly connected to the column 41.

[0023] Please see Figure 4-5 The bottom of each of the two hinge blocks 48 has an inner groove 412, and a second spring 413 is installed inside the two inner grooves 412. A movable column 414 is installed at one end of each of the two second springs 413, and a fixing claw 415 is installed at the bottom of each of the two movable columns 414.

[0024] When the pneumatic cylinder 411 drives the bottom of the two side claws 49 to fold inward, the steel pipe is lifted upward so that it contacts the fixed claw 415. At this time, the second spring 413 is compressed and contracted, and the steel pipe is stably clamped by the fixed claw 415 and the two side claws 49.

[0025] Please see Figure 1-2 The movable structure 3 includes a bidirectional screw 31, which is rotatably connected to the mounting groove 2. One end of the bidirectional screw 31 passes through the worktable 1 and extends to the outside of the worktable 1. A handwheel 32 is installed at the end of the bidirectional screw 31 extending to the outside of the worktable 1. Threaded blocks 33 are threaded on both sides of the outer surface of the bidirectional screw 31, and the four sides of the two threaded blocks 33 are tightly attached to the inner wall of the mounting groove 2. The tops of the two threaded blocks 33 are fixedly connected to two columns 41.

[0026] By turning the handwheel 32, the bidirectional screw 31 can be rotated. Due to the limiting of the mounting groove 2, the two threaded blocks 33 can move horizontally in opposite directions on the outer surface of the bidirectional screw 31 at the same time, thereby allowing the two positioning structures 4 to adapt to steel pipes of different lengths.

[0027] Working principle: When a positioning fixture for metal workpiece processing is used, firstly, the handwheel 32 is rotated according to the length of the steel pipe. At this time, the bidirectional screw 31 rotates. Due to the limiting of the mounting groove 2, the two threaded blocks 33 can move horizontally in opposite directions on the outer surface of the bidirectional screw 31 simultaneously. This allows the two positioning structures 4 to adapt to steel pipes of different lengths. Then, the two sections of steel pipe are placed into the rotating ring 43 respectively. Driven by the two pneumatic cylinders 411, the hinge rods 410 on both sides are pressed together, thereby causing the bottom of the side claws 49 to fold inward. At the same time, the pneumatic cylinders 411 drive the bottom of the side claws 49 on both sides to fold inward. When the part is folded inward, lift the steel pipe upward so that it contacts the fixing claw 415. At this time, the second spring 413 is compressed and contracted. The steel pipe is then stably clamped by the fixing claw 415 and the side claws 49 on both sides. Welding can then be carried out. After welding one side, pull the locking block 45 outward. At this time, the first spring 46 is stretched, and the locking block 45 is disengaged from the slot 44. Then, the rotating ring 43 can be turned to rotate inside the rotating rail 42. After rotating to the desired position, release the locking block 45. At this time, the first spring 46 returns to its original position, and the locking block 45 is locked in the slot 44 again. After the welding is completed, the steel pipe can be removed.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for machining metal workpieces, comprising a worktable (1), characterized in that: The top of the workbench (1) is provided with an installation slot (2), and a movable structure (3) is provided inside the installation slot (2). Two positioning structures (4) are provided on both sides of the outer surface of the movable structure (3). The two positioning structures (4) include columns (41), with rotating rails (42) installed inside the columns (41), rotating rings (43) slidably installed inside the rotating rails (42), connecting plates (47) installed inside the rotating rings (43), hinge blocks (48) installed at one bottom end of the connecting plates (47), side claws (49) hingedly installed on both sides inside the hinge blocks (48), and the top ends of the side claws (49) hingedly installed. The device is equipped with hinge rods (410), and a pneumatic cylinder (411) is hinged between the two hinge rods (410). Six slots (44) are opened on one side of the outer surface of the rotating rings (43) on both sides. A locking block (45) is movably installed on one side of the two columns (41). The two locking blocks (45) are locked inside the slots (44). A first spring (46) is installed on both sides of the two locking blocks (45). One end of the two first springs (46) is fixedly connected to the column (41).

2. A positioning fixture for machining metal workpieces according to claim 1, characterized in that: The bottom of the two hinge blocks (48) is provided with an inner groove (412), and a second spring (413) is installed inside the two inner grooves (412).

3. A positioning fixture for machining metal workpieces according to claim 2, characterized in that: Two second springs (413) have movable posts (414) installed at one end, and fixed claws (415) are installed at the bottom of the two movable posts (414).

4. A positioning fixture for machining metal workpieces according to claim 1, characterized in that: The movable structure (3) includes a bidirectional screw (31), which is rotatably connected to the mounting groove (2).

5. A positioning fixture for machining metal workpieces according to claim 4, characterized in that: One end of the bidirectional screw (31) passes through the workbench (1) and extends to the outside of the workbench (1). A handwheel (32) is installed at the end of the bidirectional screw (31) extending to the outside of the workbench (1).

6. A positioning fixture for machining metal workpieces according to claim 5, characterized in that: The two-way screw (31) has threaded blocks (33) threaded on both sides of its outer surface, and the two threaded blocks (33) are tightly attached to the inner wall of the mounting groove (2) on all four sides.

7. A positioning fixture for machining metal workpieces according to claim 6, characterized in that: The tops of the two threaded blocks (33) are fixedly connected to the two columns (41).

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