L-shaped section multi-piece machining jig

Abstract

The utility model relates to mechanical processing fixture technical field especially is involved in a kind of L section bar multi-piece processing fixture, L section bar includes the side piece formed by one place bending and bending two sides, fixture includes two oppositely arranged first stopper and second stopper, corresponding several positioning parts are set on the opposite surface of first stopper and second stopper, the positioning part of first stopper and second stopper respectively abuts against the inner side and outer side of L section bar, positioning part includes the profiling recess and profiling projection of adaptation, profiling recess and profiling projection are respectively arranged on first stopper and second stopper, bottom plate is provided below first stopper, first stopper is fixedly arranged on bottom plate, and the side of second stopper opposite to first stopper is in abutment with the side of bottom plate.The L section bar multi-piece processing fixture is clamped to L section bar by two profiling stoppers, multiple groups of superimposed L section bars can be placed between two stoppers in turn, greatly improve the processing efficiency of L section bar, and debugging is simple and fast, and clamping efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of machining fixture technology, and in particular to a multi-piece machining fixture for L-shaped profiles. Background Technology

[0002] Currently, L-shaped profiles are typically machined using specialized fixtures on four-axis machine tools. For example, patent CN215281026U discloses a fixture for machining L-shaped materials, which uses a four-axis rotary table, bridge plate, cylinders, and other components for clamping. However, this fixture can only clamp a small number of workpieces at a time, is complex to operate, has low clamping efficiency, and relies heavily on a four-axis machine tool, resulting in high resource consumption. For mass production, this fixture cannot meet the demands of high-efficiency machining, especially when L-shaped profiles come in various specifications, requiring frequent changes to fixtures and programs, further reducing efficiency. Therefore, there is an urgent need for a versatile fixture capable of batch clamping L-shaped profiles to improve machining efficiency and save resources. Utility Model Content

[0003] To address the problems of complex operation and low clamping and processing efficiency of existing fixtures, this utility model provides a multi-piece processing fixture for L-shaped profiles. The L-shaped profiles are clamped by two contour blocks, and multiple sets of stacked L-shaped profiles can be placed sequentially between the two blocks, which greatly improves the processing efficiency of L-shaped profiles. Moreover, the fixture is simple and quick to adjust and has high clamping efficiency.

[0004] This utility model provides a multi-piece processing fixture for L-shaped profiles. The L-shaped profile includes a bend at one point and side pieces formed on both sides of the bend. The fixture includes two opposing first and second blocks. Several positioning portions are correspondingly formed on the opposing surfaces of the first and second blocks. The positioning portions of the first and second blocks abut against the inner and outer surfaces of the L-shaped profile, respectively. The shape of each positioning portion matches the contour of the inner and outer surfaces of the L-shaped profile, ensuring precise positioning during clamping. This not only improves the stability of the clamping but also significantly reduces the time required for tooling adjustment, making it suitable for batch processing of L-shaped profiles.

[0005] Furthermore, the positioning part includes a matching contoured groove and a contoured protrusion, which are respectively disposed on the first stop and the second stop. The contoured groove and the contoured protrusion can closely fit the inner and outer contours of the L-shaped profile, ensuring that no displacement or loosening occurs during clamping, and can adapt to L-shaped profiles of different sizes, thus enhancing versatility.

[0006] Furthermore, a base plate is provided below the first stop, and the first stop is fixedly mounted on the base plate. The second stop, opposite to the first stop, abuts against the side of the base plate. The fixed structure of the base plate and the first stop provides a stable foundation for the clamp, and the second stop can be moved, adjusted, and clamped relative to the first stop.

[0007] Furthermore, a shim block is provided on the base plate, sandwiched between the first and second stop blocks. The sides of the shim block have protrusions and grooves that mate with the contoured grooves and protrusions. The shim block can be adjusted according to different profile heights, offering high versatility.

[0008] Furthermore, the upper surface of the raised block is provided with protruding ridges along its length, and a clearance groove is formed between adjacent protruding ridges. One bent end is provided with an extension section, which is fitted into the clearance groove. The clearance groove formed by the protruding ridges can accommodate the extension section of the profile.

[0009] Furthermore, at least five sets of contoured grooves and contoured protrusions are provided, and several L-shaped profiles are arranged sequentially between each set of contoured grooves and contoured protrusions. Multiple profiles can be stacked between each set of contoured grooves and contoured protrusions, allowing for batch processing of 60 products at a time.

[0010] Furthermore, both the first and second stops are provided with bolt holes for fixing the fixture to the machining equipment. A three-axis machine tool replaces the traditional four-axis machine tool, and the stops are fixed to the three-axis machine tool for use.

[0011] Furthermore, the processing equipment is a three-axis machine tool, which has a bench vise. The first and second stops are fixed to the two jaws of the bench vise by bolts. The two jaws of the bench vise are tightly connected to the first and second stops by bolts to ensure that the fixture remains stable during processing.

[0012] The beneficial effects of this utility model are as follows: This utility model provides a multi-piece processing fixture for L-shaped profiles. Through the cooperation of the contouring groove and the contouring protrusion, the position of the L-shaped profile can be effectively positioned to ensure processing accuracy. By setting multiple sets of contouring parts, multiple sets of stacked profiles can be placed to achieve batch processing, thereby improving production efficiency. By setting height-adjustable shims, it can adapt to the clamping requirements of profiles of different heights and improve versatility. By using the fixture in conjunction with a three-axis machine tool, not only are equipment requirements simplified, but processing costs are also reduced, and the overall processing stability and reliability are improved. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a structural diagram of the L-shaped profile; Figure 2 This is a schematic diagram of the structure of a traditional clamp; Figure 3 It is an assembly diagram of multiple machining fixtures; Figure 4 This is a first-angle disassembly diagram of multiple machining fixtures; Figure 5 This is a second-angle disassembly diagram of multiple machining fixtures; In the figure: 1. L-shaped profile, 11. Bending, 12. Side plate, 13. Extension section, 2. First stop block, 3. Second stop block, 4. Contouring groove, 5. Contouring protrusion, 6. Base plate, 7. Elevating block, 71. Raised ridge, 72. Clearance groove, 8. Bolt hole, 9. Base, 91. Clamping block, 92. Baffle. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0015] like Figure 1 As shown, the L-shaped profile 1 includes a bend 11 and side pieces 12 formed on both sides of the bend 11. A conventional L-shaped profile clamp is as follows: Figure 2 As shown, the machine includes a base 9 with bolt holes 8 for fixing to a four-axis machine tool. The base 9 has several clamping slots, and an L-shaped profile 1 is placed between adjacent clamping slots. Clamping blocks 91 are provided on both sides of the L-shaped profile 1 for fixing the side pieces 12. The extension section 13 of the L-shaped profile 1 abuts against the baffle 92, thereby completing the clamping of the L-shaped profile 1. Only a small number of profiles can be clamped at one time, resulting in low clamping efficiency and low processing efficiency.

[0016] To improve the clamping efficiency of L-profile 1 and enhance the versatility of the fixture, a multi-piece machining fixture for L-profiles is designed, such as... Figure 3 As shown, the fixture includes two opposing first blocks 2 and second blocks 3. Several positioning parts are correspondingly formed on the opposing surfaces of the first blocks 2 and second blocks 3. The positioning parts of the first blocks 2 and second blocks 3 abut against the inner and outer surfaces of the L-shaped profile 1, respectively. Several sets of stacked L-shaped profiles 1 are placed between the first blocks 2 and second blocks 3, and the positioning parts are used to fix and clamp the L-shaped profiles 1. Several sets of stacked profiles can be clamped along the length of the blocks, making the clamping operation convenient, increasing the clamping capacity, and facilitating stable batch processing.

[0017] like Figure 4 and 5As shown, specifically, the positioning part includes a matching contoured groove 4 and a contoured protrusion 5, which are respectively disposed on the first stop 2 and the second stop 3. The contoured groove 4 and the contoured protrusion 5 are respectively tightly fitted to the outer and inner sides of the L-shaped profile 1 to achieve precise positioning and stable clamping of the L-shaped profile 1. The shapes of the contoured groove 4 and the contoured protrusion 5 match the contours of the inner and outer sides of the L-shaped profile, which can effectively prevent the profile from shifting or loosening during processing.

[0018] To improve versatility, a shim block 7 is provided on the base plate 6. The shim block 7 is sandwiched between the first stop block 2 and the second stop block 3. The sides of the shim block 7 are provided with protrusions and grooves that fit into the contour groove 4 and contour protrusion 5. The shim block 7 can be adjusted according to the different heights of the parts, and L-shaped profiles 1 of different specifications can be processed.

[0019] To further limit the L-shaped profile 1, the upper surface of the shim block 7 is provided with a protruding rib 71 along its length, and a clearance groove 72 is formed between adjacent protruding ribs 71. One end of the bend 11 is provided with an extension section 13, which is engaged in the clearance groove 72. One end with the extension section 13 is placed in the clearance groove 72 at the bottom of the fixture for effective limiting, and the other end is placed at the top of the fixture for planar machining.

[0020] To facilitate the stable placement of the shim block 7, a base plate 6 is provided below the first stop block 2. The first stop block 2 is fixedly mounted on the base plate 6, and the second stop block 3, opposite to the first stop block 2, abuts against the side of the base plate 6. The base plate 6 provides stable support for the entire fixture.

[0021] To improve clamping efficiency and achieve batch processing in one go, at least five sets of contouring grooves 4 and contouring protrusions 5 are correspondingly arranged, with several L-shaped profiles 1 stacked sequentially between each set of contouring grooves 4 and contouring protrusions 5. Up to 60 profiles can be processed at once, greatly improving the processing efficiency of various L-shaped profiles 1.

[0022] To facilitate use with processing equipment, both the first stop 2 and the second stop 3 are provided with bolt holes 8 for fixing the fixture to the processing equipment. Preferably, the processing equipment is a three-axis machine tool with a bench vise. The first stop 2 and the second stop 3 are respectively fixed to the two jaws of the bench vise with bolts, and the profile placed in the first stop 2 and the second stop 3 is stably clamped by the bench vise. The three-axis machine tool is simple and quick to debug, has high clamping efficiency, and saves the resources of a four-axis machine tool.

[0023] The above description is illustrative only and not restrictive of this utility model. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all such modifications, variations or equivalents will fall within the protection scope of this utility model.

Claims

1. A multi-piece processing fixture for L-shaped profiles, wherein the L-shaped profile (1) includes a bend (11) and side pieces (12) formed on both sides of the bend (11), characterized in that: The clamp includes two opposing first blocks (2) and second blocks (3). Several positioning parts are provided on the opposing surfaces of the first blocks (2) and the second blocks (3). The positioning parts of the first blocks (2) and the second blocks (3) abut against the inner and outer surfaces of the L-shaped profile (1), respectively.

2. The L-shaped profile multi-piece processing fixture according to claim 1, characterized in that: The positioning part includes a matching contoured groove (4) and a contoured protrusion (5), which are respectively disposed on the first stop (2) and the second stop (3).

3. The L-shaped profile multi-piece processing fixture according to claim 2, characterized in that: A base plate (6) is provided below the first stop block (2). The first stop block (2) is fixedly installed on the base plate (6). The second stop block (3), which is opposite to the first stop block (2), abuts against the side of the base plate (6).

4. The L-shaped profile multi-piece processing fixture according to claim 3, characterized in that: The base plate (6) is provided with a shim block (7), which is sandwiched between the first stop block (2) and the second stop block (3). The shim block (7) has protrusions and grooves on both sides that match the contour groove (4) and the contour protrusion (5).

5. A multi-piece L-shaped profile machining fixture according to claim 4, characterized in that: The upper surface of the raised block (7) is provided with a protruding ridge (71) along its length direction, and a clearance groove (72) is formed between adjacent protruding ridges (71). One end of the bend (11) is provided with an extension section (13), and the extension section (13) is engaged in the clearance groove (72).

6. A multi-piece machining fixture for L-shaped profiles according to claim 2, characterized in that: The contoured groove (4) and contoured protrusion (5) are provided in at least five sets, and several L-shaped profiles (1) are arranged sequentially between each set of contoured groove (4) and contoured protrusion (5).

7. A multi-piece machining fixture for L-shaped profiles according to claim 3, characterized in that: Both the first stop (2) and the second stop (3) are provided with bolt holes (8) for fixing the fixture to the processing equipment.

8. A multi-piece machining fixture for L-shaped profiles according to claim 7, characterized in that: The processing equipment is a three-axis machine tool, which has a bench vise. The first stop (2) and the second stop (3) are fixed to the two jaw plates of the bench vise by bolts.

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