A profiled clamping fixture
The fixture design using contour grooves and limiting guide rails solves the problem of difficult clamping of irregularly shaped workpieces, achieving fast and accurate clamping and fixing, and improving machining accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAI XINYUAN PRECISION MACHINERY XIAMEN
- Filing Date
- 2025-09-22
- Publication Date
- 2026-08-04
AI Technical Summary
Existing fixtures are difficult to effectively clamp and fix irregularly shaped workpieces, resulting in workpiece displacement during processing and affecting processing accuracy.
It adopts a contour groove and limit guide rail structure, and achieves fast and accurate clamping of irregular workpieces through the cooperation of manual clamping parts and clamping seats. Limiting slides and limit stops are used to limit the clamping force and avoid excessive clamping force.
It enables rapid and precise clamping and fixing of irregularly shaped workpieces, avoiding damage to the workpieces during processing and improving processing accuracy and stability.
Smart Images
Figure CN224587541U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clamping technology, and more specifically, to a contour clamping fixture. Background Technology
[0002] A fixture is a process device used during machining to quickly secure a workpiece and maintain the correct relative position of the machine tool, cutting tool, and workpiece. Fixtures are indispensable components in machining. Driven by the development of machine tool technology towards high speed, high efficiency, precision, composite, intelligent, and environmentally friendly directions, fixture technology is moving towards high precision, high efficiency, modularity, combination, and versatility.
[0003] Existing fixtures are typically used to clamp and fix workpieces with regular shapes. However, it is difficult to clamp and fix workpieces with irregular shapes using ordinary fixtures. Therefore, a contouring fixture is needed to clamp irregularly shaped workpieces. This can help us to accurately clamp workpieces during the manufacturing process and ensure machining accuracy. In this way, the workpiece will not be displaced due to vibration or other reasons during the machining process. The contouring fixture is therefore particularly important. So we propose a contouring clamping fixture to solve the above-mentioned problems. Utility Model Content
[0004] 1. Technical problems to be solved
[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a contour clamping fixture, which positions irregularly shaped workpieces through contour grooves, and then the clamping end of the manual clamping component passes through the mounting base and abuts against the clamping base. By using the limiting slide in conjunction with the limiting guide rail to move, the clamping base moves closer to the irregularly shaped workpiece and clamps and fixes it, which can quickly and accurately clamp and fix irregularly shaped workpieces.
[0006] 2. Technical Solution
[0007] To solve the above problems, the present invention adopts the following technical solution.
[0008] A contour clamping fixture includes a base, a positioning seat fixedly connected to the upper surface of the base, and a limiting boss installed between the positioning seats. The positioning seat has a pin hole, and a positioning pin protruding from the top of the positioning seat is installed on the inner side of the pin hole.
[0009] Both sides of the limiting boss are provided with contour grooves;
[0010] An irregularly shaped workpiece is placed in the contour groove, and a positioning hole is opened on the top of the irregularly shaped workpiece to engage with the positioning pin.
[0011] The contour groove is symmetrically provided with guide rail assembly grooves on the side away from the limiting boss. A limiting guide rail is installed at the guide rail assembly groove. A limiting slide block is slidably connected to the limiting guide rail. A clamping seat for clamping the irregular workpiece is installed on the limiting slide block.
[0012] The guide rail assembly slots are symmetrically provided with fixing slots, and limit blocks are installed at the fixing slots. The clamping seat is provided with a limit slot that slides and connects with the limit blocks.
[0013] The base is fixedly connected to a mounting seat by bolts on the side wall near the fixing groove. A manual clamping element with a clamping end that abuts against the clamping seat is installed on the mounting seat.
[0014] Furthermore, the clamping end of the manual clamping member is equipped with a threaded post, and the threaded post penetrates the mounting base.
[0015] Furthermore, an adjusting nut is screwed onto the threaded post, and an anti-slip pad is installed on the side of the adjusting nut near the clamping seat.
[0016] Furthermore, the bottom end of the irregularly shaped workpiece and the contour groove form an embedded structure.
[0017] Furthermore, the inner diameters of the pin hole and the positioning hole are adapted to the outer diameter of the positioning pin.
[0018] Furthermore, the mounting base has a through hole at the part corresponding to the clamping end of the manual clamping member.
[0019] Furthermore, the base is equipped with support feet on its edge, and multiple support feet are symmetrically arranged.
[0020] 3. Beneficial effects
[0021] Compared with existing technologies, the advantages of this utility model are:
[0022] (1) In this solution, the operator moves the handle on the manual clamping part, so that the clamping end of the manual clamping part passes through the mounting base and abuts against the clamping base. The limit slide moves in conjunction with the limit guide rail, so that the clamping base moves closer to the irregular workpiece and clamps and fixes it. This can quickly and accurately clamp and fix the irregular workpiece.
[0023] (2) In this solution, the bottom end of the irregular workpiece is embedded into the contour groove. At this time, the positioning hole on the irregular workpiece corresponds exactly to the pin hole on the positioning seat. Then, the positioning pin is inserted into the pin hole to quickly perform initial positioning of the irregular workpiece.
[0024] (3) In this solution, during the movement of the clamping seat, the clamping seat can be effectively limited by the limiting groove and the limiting block, so as to avoid the clamping force of the clamping seat being too large and causing damage to the irregular workpiece. Attached Figure Description
[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0026] Figure 2 This is a schematic diagram of the base structure of this utility model;
[0027] Figure 3 This is a schematic diagram of the irregularly shaped workpiece structure of this utility model;
[0028] Figure 4 This is a structural schematic diagram of the irregularly shaped workpiece of this utility model from another perspective;
[0029] Figure 5 This is a schematic diagram of the limiting guide rail structure of this utility model;
[0030] Figure 6 This is a schematic diagram of the clamping seat structure of this utility model;
[0031] Figure 7 This is a schematic diagram of the manual clamping component of this utility model.
[0032] Explanation of the labels in the diagram:
[0033] 1. Base; 2. Positioning seat; 3. Pin hole; 4. Limiting boss; 5. Contouring groove; 6. Irregularly shaped workpiece; 7. Positioning hole; 8. Positioning pin; 9. Guide rail assembly groove; 10. Limiting guide rail; 11. Limiting slide; 12. Clamping seat; 13. Fixing groove; 14. Limiting groove; 15. Limiting stop; 16. Mounting seat; 17. Manual clamping component. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0035] Example:
[0036] Please see Figure 1-7 A contour clamping fixture includes a base 1, a positioning seat 2 fixedly connected to the upper surface of the base 1, and a limiting boss 4 installed between the positioning seats 2. The positioning seat 2 has a pin hole 3, and a positioning pin 8 protruding from the top of the positioning seat 2 is installed on the inner side of the pin hole 3.
[0037] Both sides of the limiting boss 4 are provided with contour grooves 5;
[0038] A non-shaped workpiece 6 is placed in the contour groove 5, and a positioning hole 7 is opened on the top of the non-shaped workpiece 6 to connect with the positioning pin 8.
[0039] The contour groove 5 is symmetrically provided with guide rail assembly groove 9 on the side away from the limiting boss 4. A limiting guide rail 10 is installed at the guide rail assembly groove 9. A limiting slide 11 is slidably connected on the limiting guide rail 10. A clamping seat 12 for clamping the irregular workpiece 6 is installed on the limiting slide 11.
[0040] A fixed groove 13 is symmetrically opened between the symmetrically arranged guide rail assembly grooves 9. A limit block 15 is installed at the fixed groove 13. A limit groove 14 is opened on the clamping seat 12 and is slidably connected to the limit block 15.
[0041] A mounting base 16 is fixedly connected to the side wall of the base 1 near the fixing groove 13 by bolts. A manual clamping part 17 with a clamping end abutting against the clamping seat 12 is installed on the mounting base 16.
[0042] It should be noted that when using this contour clamping fixture, the bottom end of the irregular workpiece 6 is first inserted into the contour groove 5. At this time, the positioning hole 7 on the irregular workpiece 6 corresponds exactly to the pin hole 3 on the positioning seat 2. Then, the positioning pin 8 is inserted into the pin hole 3 to perform initial positioning of the irregular workpiece 6.
[0043] Then, by having the staff move the handle on the manual clamping part 17, the clamping end of the manual clamping part 17 passes through the mounting base 16 and abuts against the clamping base 12. The limiting slide 11 moves in conjunction with the limiting guide rail 10, so that the clamping base 12 moves closer to the irregular workpiece 6 and clamps and fixes it, which can quickly and accurately clamp and fix the irregular workpiece 6.
[0044] During the movement of the clamping seat 12, the clamping seat 12 can be effectively limited by the limiting groove 14 and the limiting block 15, so as to avoid excessive clamping force of the clamping seat 12 and damage to the irregular workpiece 6.
[0045] like Figure 7 As shown, the clamping end of the manual clamping member 17 is equipped with a threaded post, and the threaded post passes through the mounting base 16. An adjusting nut is screwed onto the threaded post, and an anti-slip pad is installed on the side of the adjusting nut near the clamping base 12.
[0046] It should be noted that by using the adjusting nut in conjunction with the threaded post for fine-tuning, the anti-slip pad is made to fit snugly against the clamping seat 12, which effectively prevents the clamping end of the manual clamping part 17 from loosening, thus ensuring a stable clamping effect on the irregularly shaped workpiece 6.
[0047] like Figure 2 , Figure 4 As shown, the bottom end of the irregular workpiece 6 and the contour groove 5 form an embedded structure, and the inner diameter of the pin hole 3 and the positioning hole 7 are adapted to the outer diameter of the positioning pin 8.
[0048] It should be noted that, firstly, the bottom end of the irregular workpiece 6 is inserted into the contour groove 5. At this time, the positioning hole 7 on the irregular workpiece 6 corresponds exactly to the pin hole 3 on the positioning seat 2. Then, the positioning pin 8 is inserted into the pin hole 3 to quickly perform initial positioning of the irregular workpiece 6.
[0049] like Figure 7 As shown, the mounting base 16 has a through hole at the part corresponding to the clamping end of the manual clamping member 17;
[0050] It should be noted that the clamping end of the manual clamping member 17 can pass through the mounting base 16 and push the clamping base 12 to clamp and fix the irregular workpiece 6.
[0051] Support feet are installed on the edge of the base 1, and multiple support feet are symmetrically arranged.
[0052] When in use: First, insert the bottom end of the irregular workpiece 6 into the contour groove 5. At this time, the positioning hole 7 on the irregular workpiece 6 corresponds exactly to the pin hole 3 on the positioning seat 2. Then, insert the positioning pin 8 into the pin hole 3 to perform initial positioning of the irregular workpiece 6.
[0053] Then, by having the staff move the handle on the manual clamping part 17, the clamping end of the manual clamping part 17 passes through the mounting base 16 and abuts against the clamping base 12. The limiting slide 11 moves in conjunction with the limiting guide rail 10, so that the clamping base 12 moves closer to the irregular workpiece 6 and clamps and fixes it, which can quickly and accurately clamp and fix the irregular workpiece 6.
[0054] During the movement of the clamping seat 12, the clamping seat 12 can be effectively limited by the limiting groove 14 and the limiting block 15, so as to avoid excessive clamping force of the clamping seat 12 and damage to the irregular workpiece 6.
[0055] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A contour clamping fixture, comprising a base (1), a positioning seat (2) fixedly connected to the upper surface of the base (1), and a limiting boss (4) installed between the positioning seats (2), characterized in that: The positioning seat (2) is provided with a pin hole (3), and a positioning pin (8) protruding from the top of the positioning seat (2) is installed on the inner side of the pin hole (3). The limiting boss (4) has contour grooves (5) on both sides; A non-shaped workpiece (6) is placed in the contour groove (5), and a positioning hole (7) is opened on the top of the non-shaped workpiece (6) to connect with the positioning pin (8). The contour groove (5) is symmetrically provided with guide rail assembly grooves (9) on the side away from the limiting boss (4). A limiting guide rail (10) is installed at the guide rail assembly groove (9). A limiting slide block (11) is slidably connected on the limiting guide rail (10). A clamping seat (12) for clamping the irregular workpiece (6) is installed on the limiting slide block (11). The guide rail assembly slots (9) are symmetrically arranged with fixing slots (13) symmetrically opened between them. A limit stop (15) is installed at the fixing slot (13). A limit slot (14) is opened on the clamping seat (12) and is slidably connected to the limit stop (15). The base (1) is fixedly connected to the mounting seat (16) by bolts on the side wall near the fixing groove (13). The mounting seat (16) is equipped with a manual clamping member (17) whose clamping end abuts against the clamping seat (12).
2. The contour clamping fixture according to claim 1, characterized in that: The clamping end of the manual clamping member (17) is equipped with a threaded post, and the threaded post penetrates the mounting base (16).
3. The contour clamping fixture according to claim 2, characterized in that: An adjusting nut is screwed onto the threaded post, and an anti-slip pad is installed on the side of the adjusting nut near the clamping seat (12).
4. The contour clamping fixture according to claim 1, characterized in that: The bottom end of the irregular workpiece (6) and the contour groove (5) form an embedded structure.
5. The contour clamping fixture according to claim 1, characterized in that: The inner diameters of the pin hole (3) and the positioning hole (7) are adapted to the outer diameter of the positioning pin (8).
6. The contour clamping fixture according to claim 1, characterized in that: The mounting base (16) has a through hole at the part corresponding to the clamping end of the manual clamping member (17).
7. The contour clamping fixture according to claim 1, characterized in that: The base (1) is equipped with support feet on its edge, and multiple support feet are symmetrically arranged.