CNC machining jig
By introducing a detachable installation structure into the CNC machining fixture, the problem of single processing size is solved, and flexible adaptation and efficient processing of different workpieces are achieved.
Patent Information
- Application Number
- CN202421632894.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The existing CNC machining fixtures have a single processing size, making it difficult to adapt to workpieces to be processed of different sizes.
The detachable mounting structure is adopted, including the first and second mounting rails, fixed clamps and movable clamps. The clamps are flexibly adjusted and fixed through locking bolts and control structures, and adapted to different workpiece sizes.
It improves the practicality of CNC machining fixtures, can be applied to more types of workpieces, realizes rapid clamping and disassembly, and improves work efficiency.
Smart Images
Figure CN223114649U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of processing fixtures, and specifically, to a CNC processing fixture. Background Art
[0002] A CNC processing fixture is a tool or device used to fix and position workpieces on a numerically controlled machine tool. It usually consists of a fixture, a fixture plate, positioning pins, screws, etc., to ensure that the workpiece maintains a stable position and attitude during processing, so as to ensure the accuracy and quality of processing.
[0003] The existing CNC processing fixture clamps and fixes the workpiece to be processed by pushing the clamping plate closer with a cylinder, and releases the workpiece to be processed by pushing the clamping plate away with the cylinder, which is convenient for its disassembly and installation.
[0004] Although this can achieve the installation and disassembly of the workpiece to be processed, there are still the following problems: Since the position of the cylinder is fixed, the clamping of the workpiece to be processed can only be carried out for specific sizes. If the size of the workpiece to be processed changes, it is difficult to stably clamp and fix the changed workpiece to be processed. Summary of the Utility Model
[0005] The utility model provides a CNC processing fixture, which solves the problem of single processing size of the existing CNC processing fixture and improves the practicability of the equipment.
[0006] The technical solution of the utility model is as follows:
[0007] A CNC processing fixture includes an installation base,
[0008] A first installation rail and a second installation rail are fixed on the installation base. The first installation rail and the second installation rail are parallel to each other. A fixed clamping plate and a movable clamping plate are slidably connected to the first installation rail and the second installation rail. A first installation structure for fixing the fixed clamping plate to the first installation rail and the second installation rail is provided between the fixed clamping plate, the first installation rail and the second installation rail. A second installation structure for fixing the movable clamping plate to the first installation rail and the second installation rail is provided between the movable clamping plate, the first installation rail and the second installation rail. A movable fixture is slidably connected to the movable clamping plate. A control structure for moving the movable fixture closer to or away from the fixed clamping plate is provided between the movable clamping plate and the movable fixture.
[0009] Further, the first installation structure includes a first locking bolt. A sliding hole is provided on the installation base. The sliding hole is arranged between the first installation rail and the second installation rail and is parallel to both the first installation rail and the second installation rail. The first locking bolt is slidably connected to the sliding hole, and the first locking bolt is threadedly connected to the fixed clamping plate.
[0010] Furthermore, the second installation structure includes a plurality of second locking bolts. The movable clamping plate includes a sliding member and a locking member. The sliding member is arranged at the bottoms of the first installation rail and the second installation rail and is slidably connected to both the first installation rail and the second installation rail. The sliding member is arranged at the tops of the first installation rail and the second installation rail. The movable clamping plate is slidably connected to the locking member. Each of the second locking bolts is arranged on both sides of the locking member and is slidably connected to the locking member. Each of the second locking bolts is threadedly connected to the sliding member.
[0011] Furthermore, a limiting spring is sleeved on each of the second locking bolts, and two ends of the limiting spring are respectively fixedly connected to the sliding member and the locking member.
[0012] Furthermore, a plurality of first anti-slip strips are arranged on both the first installation rail and the second installation rail. The first anti-slip strips are parallel to each other. A plurality of second anti-slip strips are arranged at the bottom of the fixed clamping plate. The second anti-slip strips are engaged with the first anti-slip strips. A plurality of third anti-slip strips are arranged at the lower end of the locking member. The third anti-slip strips are engaged with the first anti-slip strips. Cross-sections of the first anti-slip strips, the second anti-slip strips, and the third anti-slip strips are all triangular structures.
[0013] Furthermore, a first sliding rail, a second sliding rail, a third sliding rail, and a fourth sliding rail are fixedly arranged at the top of the locking member. A central axis of the first sliding rail and a central axis of the second sliding rail are on the same straight line. A central axis of the third sliding rail and a central axis of the fourth sliding rail are on the same straight line. The first sliding rail is parallel to the third sliding rail. Cross-sections of the first sliding rail, the second sliding rail, the third sliding rail, and the fourth sliding rail are all isosceles trapezoidal structures. The movable fixture includes a first movable clamping member and a second movable clamping member. The first movable clamping member is simultaneously slidably connected to the first sliding rail and the second sliding rail. The second movable clamping member is simultaneously slidably connected to the third sliding rail and the fourth sliding rail.
[0014] Furthermore, the control structure includes a telescopic member. Sliding inclined surfaces are arranged on both the first movable clamping member and the second movable clamping member. A limiting groove is arranged on the sliding inclined surface. A cross-section of the limiting groove is an isosceles trapezoidal structure. A fixed end of the telescopic member is fixedly connected to the sliding member. A control member is fixedly arranged at a telescopic end of the telescopic member. The control member is simultaneously abutted against the sliding inclined surface and the limiting groove and is slidably connected to the limiting groove.
[0015] The working principle and beneficial effects of the present utility model are as follows:
[0016] Working process of this embodiment: First, move the fixed clamping plate to the position to be installed, and then ensure the installation and fixation of the fixed clamping plate by engaging the second anti-slip strip on the fixed clamping plate with the first anti-slip strip through the first locking bolt. Then, move the movable clamping plate according to the size of the workpiece to be processed, and lock and fix the movable clamping plate through the second locking bolt. At this time, the third anti-slip strip is engaged with the first anti-slip strip to ensure the installation and fixation of the movable clamping plate. When machining the workpiece to be processed, contract the telescopic member to move downward through the control member, so that the first movable member or the second movable member approaches the fixed clamping plate to clamp and machine the workpiece to be processed; when the machining is completed, extend the telescopic member to move the control member upward. At this time, the first movable member or the second movable member disengages from the workpiece to be clamped, enabling the workpiece to be taken out and the next workpiece to be processed.
[0017] In this embodiment, a first installation rail and a second installation rail are provided on the installation base. The positions of the fixed clamping plate and the movable clamping plate are adjusted through the first installation structure and the second installation structure, and the movable clamping plate and the fixed clamping plate are fixed on the first installation rail and the second installation rail. The movable clamping plate is controlled through the control structure to achieve rapid clamping and disassembly of the workpiece. This embodiment adopts a detachable installation for the fixed clamping plate and the movable clamping plate, replacing the design in the prior art that does not change the clamping stroke of the clamping plate. The utility model can be applied to more clamped workpieces and has strong practicability. Brief Description of the Drawings
[0018] The following further elaborates on the present utility model in detail in conjunction with the drawings and specific embodiments.
[0019] Figure 1 Structural schematic diagram of the prior art;
[0020] Figure 2 Overall structural schematic diagram of this embodiment;
[0021] Figure 3 Internal structural schematic diagram of this embodiment;
[0022] Figure 4 Connection structural schematic diagram of the first anti-slip strip and the third anti-slip strip meshing in this embodiment;
[0023] Figure 5 Connection structural schematic diagram of the first locking bolt in this embodiment;
[0024] Figure 6 Structural schematic diagram of the locking member, the first sliding rail, the second sliding rail, the third sliding rail and the fourth sliding rail in this embodiment.
[0025] In the figure:
[0026] 1. Installation base; 11. Sliding hole; 21. First installation rail; 211. First anti-slip strip; 22. Second installation rail; 3. Fixed clamping plate; 31. Second anti-slip strip; 32. First locking bolt; 4. Movable fixture; 41. First movable clamping piece; 411. Sliding inclined surface; 412. Limit groove; 42. Second movable clamping piece; 5. Control piece; 6. Second locking bolt; 61. Limit spring; 7. Movable clamping plate; 71. Sliding piece; 72. Locking piece; 721. First sliding rail; 722. Second sliding rail; 723. Third sliding rail; 724. Fourth sliding rail; 725. Third anti-slip strip; 8. Telescopic piece. Detailed implementation manner
[0027] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.
[0028] As Figures 2 to 6 shown, a CNC machining fixture, the structure of which includes an installation base 1. In this embodiment, the first installation rail 21 and the second installation rail 22 are fixedly arranged on the installation base 1. The first installation rail 21 and the second installation rail 22 are parallel to each other. The fixed clamping plate 3 and the movable clamping plate 7 are slidably arranged on the first installation rail 21 and the second installation rail 22. The first installation structure is arranged between the fixed clamping plate 3, the first installation rail 21 and the second installation rail 22 to fix the fixed clamping plate 3 to the first installation rail 21 and the second installation rail 22. The second installation structure is arranged between the movable clamping plate 7, the first installation rail 21 and the second installation rail 22 to fix the movable clamping plate 7 to the first installation rail 21 and the second installation rail 22. The movable fixture 4 is slidably arranged on the movable clamping plate 7. The control structure is arranged between the movable clamping plate 7 and the movable fixture 4 to make the movable fixture 4 close to or away from the fixed clamping plate 3.
[0029] The second installation structure in this embodiment includes a number of second locking bolts 6. The movable clamping plate 7 includes a sliding member 71 and a locking member 72. The sliding member 71 is arranged at the bottoms of the first installation rail 21 and the second installation rail 22 and is simultaneously slidably connected to the first installation rail 21 and the second installation rail 22. The top of the first installation rail 21 and the second installation rail 22 is provided with the sliding member 71, and the movable clamping plate 7 is slidably connected to the locking member 72. Each second locking bolt 6 is arranged on both sides of the locking member 72 and is slidably connected to the locking member 72. Each second locking bolt 6 is threadedly connected to the sliding member 71, which is used to facilitate the installation of the telescopic member 8 on the first installation rail 21 and the second installation rail 22. By rotating the second locking bolt 6 to make the locking member 72 tightly fixed to the sliding member 71, the locking member 72 is tightly fixed to the movable clamping plate 7, so as to realize the stable installation of the movable clamping plate 7 and facilitate the installation of the movable clamping plate 7 at any position on the first installation rail 21 or the second installation rail 22, so that the installation position of the movable clamping plate 7 can be adjusted, and the processing of the workpiece is more flexible.
[0030] The first installation structure in this embodiment includes a first locking bolt 32. The sliding hole 11 is arranged on the installation base 1. The sliding hole 11 is arranged between the first installation rail 21 and the second installation rail 22 and is parallel to the first installation rail 21 and the second installation rail 22 at the same time. The first locking bolt 32 is slidably connected to the sliding hole 11, and the first locking bolt 32 is threadedly connected to the fixed clamping plate 3. By rotating the first locking bolt 32 to make the fixed clamping plate 3 tightly fixed to the installation base 1, the stable installation of the fixed clamping plate 3 and the installation of the fixed clamping plate 3 at any position where it can slide in the sliding hole 11 are realized, so that the installation position of the fixed clamping plate 3 can be adjusted, and the processing of the workpiece is more flexible.
[0031] A number of first anti-slip strips 211 in this embodiment are arranged on the first installation rail 21 and the second installation rail 22. Each first anti-slip strip 211 is parallel to each other. A number of second anti-slip strips 31 are arranged at the bottom of the fixed clamping plate 3. Each second anti-slip strip 31 meshes with the first anti-slip strip 211. A number of third anti-slip strips 725 are arranged at the lower end of the locking member 72. Each third anti-slip strip 725 meshes with the first anti-slip strip 211. The cross-sections of the first anti-slip strip 211, the second anti-slip strip 31 and the third anti-slip strip 725 are all triangular structures, which are used to enhance the strength of the first anti-slip strip 211, the second anti-slip strip 31 and the third anti-slip strip 725. Such a design ensures that when the first installation rail 21, the second installation rail 22 are in butt-joint connection with the fixed clamping plate 3 and when the first installation rail 21, the second installation rail 22 are in butt-joint with the locking member 72, the fixed clamping plate 3 and the locking member 72 are more firmly connected and are not prone to sliding and displacement.
[0032] In this embodiment, the limiting spring 61 is sleeved on each second locking bolt 6, and both ends of the limiting spring 61 are fixedly connected to the sliding member 71 and the locking member 72 respectively. Such a design ensures that after the second locking bolt 6 is rotated to make the locking member 72 away from the sliding member 71, the locking member 72 automatically moves away from the sliding member 71 under the action of the limiting spring 61, so that the locking member 72 does not abut against the first mounting rail 21 and the second mounting rail 22, facilitating the movement and position adjustment of the movable clamping plate 7.
[0033] In this embodiment, the first sliding rail 721, the second sliding rail 722, the third sliding rail 723 and the fourth sliding rail 724 are fixedly arranged on the top of the locking member 72. The central axis of the first sliding rail 721 and the central axis of the second sliding rail 722 are on the same straight line, and the central axis of the third sliding rail 723 and the central axis of the fourth sliding rail 724 are on the same straight line. The first sliding rail 721 is parallel to the third sliding rail 723. The cross-sections of the first sliding rail 721, the second sliding rail 722, the third sliding rail 723 and the fourth sliding rail 724 are all isosceles trapezoid structures. The movable fixture 4 includes a first movable clamping member 41 and a second movable clamping member 42. In this embodiment, the design of double movable clamping members is adopted, and fixed clamping plates 3 can be arranged at both ends of the movable fixture 4, so that multi-station synchronous clamping work can be realized, improving the work efficiency. The first movable clamping member 41 is simultaneously slidably connected to the first sliding rail 721 and the second sliding rail 722, and the second movable clamping member 42 is simultaneously slidably connected to the third sliding rail 723 and the fourth sliding rail 724. In this embodiment, a sliding groove slidably connected to the first sliding rail 721 and the third sliding rail 723 is arranged at the bottom of the first movable clamping member 41, and a limiting surface is arranged at the end of the sliding groove to prevent the first movable clamping member 41 from sliding out of the first sliding rail 721. In this embodiment, the structure at the bottom of the second movable clamping member 42 is the same as the structure at the bottom of the first movable clamping member. The design of the first sliding rail 721, the second sliding rail 722, the third sliding rail 723 and the fourth sliding rail 724 in this embodiment is to facilitate the installation of the first movable clamping member 41 and the second movable clamping member 42 from the gap between the first sliding rail 721 and the second sliding rail 722, improving the installation efficiency.
[0034] The control structure in this embodiment includes a telescopic member 8. The sliding inclined surface 411 is provided on the first movable clamping member 41 and the second movable clamping member 42. The limiting groove 412 is provided on the sliding inclined surface 411. The cross-section of the limiting groove 412 is an isosceles trapezoid structure, which is used to make the control member 5 slide more stably in the limiting groove 412 and not prone to sliding deviation. The fixed end of the telescopic member 8 is fixedly connected to the sliding member 71, and the telescopic end of the telescopic member 8 is fixed with a control member 5. The control member 5 is in contact with both the sliding inclined surface 411 and the limiting groove 412, and the control member 5 is slidably connected to the limiting groove 412. The telescopic member 8 adopted in this embodiment is preferably a hydraulic cylinder or a pneumatic cylinder. Among them, both the hydraulic cylinder and the pneumatic cylinder are prior arts and will not be elaborated in this embodiment. This embodiment adopts the method of using the sliding inclined surface 411 to abut against the control member 5, so that when the telescopic member 8 contracts downward, it can push the first movable clamping member 41 and the second movable clamping member 42 close to the fixed clamping plate 3, realizing the rapid installation and disassembly of the workpiece to be processed. This embodiment reduces manual operation and improves work efficiency.
[0035] The working process of this embodiment: First, move the fixed clamping plate 3 to the installation position to be installed, and then use the second anti-slip strip 31 on the fixed clamping plate 3 to engage with the first anti-slip strip 211 through the first locking bolt 32 to ensure the installation and fixation of the fixed clamping plate 3. Then, move the movable clamping plate 7 according to the size of the workpiece to be processed, and then lock and fix the movable clamping plate 7 through the second locking bolt 6. At this time, the third anti-slip strip 725 engages with the first anti-slip strip 211 to ensure the installation and fixation of the movable clamping plate 7. When it is necessary to process the workpiece to be processed, contract the telescopic member 8 to move the control member 5 downward, so that the first movable member or the second movable member approaches the fixed clamping plate 3 to clamp and process the workpiece to be processed; when the processing is completed, extend the telescopic member 8 to move the control member 5 upward. At this time, the first movable member or the second movable member disengages from the workpiece to be clamped, so that the workpiece can be taken out and the next workpiece to be processed can be processed.
[0036] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A CNC machining fixture, comprising a mounting base (1), characterized in that, a first mounting rail (21) and a second mounting rail (22) are fixed on the mounting base (1), the first mounting rail (21) and the second mounting rail (22) are parallel to each other, a fixed clamping plate (3) and a movable clamping plate (7) are slidably connected on the first mounting rail (21) and the second mounting rail (22), a first mounting structure for fixing the fixed clamping plate (3) to the first mounting rail (21) and the second mounting rail (22) is provided between the fixed clamping plate (3), the first mounting rail (21) and the second mounting rail (22), a second mounting structure for fixing the movable clamping plate (7) to the first mounting rail (21) and the second mounting rail (22) is provided between the movable clamping plate (7), the first mounting rail (21) and the second mounting rail (22), a movable fixture (4) is slidably connected to the movable clamping plate (7), and a control structure for moving the movable fixture (4) closer to or away from the fixed clamping plate (3) is provided between the movable clamping plate (7) and the movable fixture (4); the first mounting structure includes a first locking bolt (32), a sliding hole (11) is provided on the mounting base (1), the sliding hole (11) is arranged between the first mounting rail (21) and the second mounting rail (22) and is parallel to the first mounting rail (21) and the second mounting rail (22) at the same time, the first locking bolt (32) is slidably connected to the sliding hole (11), and the first locking bolt (32) is threadedly connected to the fixed clamping plate (3).
2. The CNC machining fixture according to claim 1, wherein, the second mounting structure includes a plurality of second locking bolts (6), the movable clamping plate (7) includes a sliding member (71) and a locking member (72), the sliding member (71) is arranged at the bottom of the first mounting rail (21) and the second mounting rail (22) and is slidably connected to the first mounting rail (21) and the second mounting rail (22) at the same time, the locking member (72) is arranged at the top of the first mounting rail (21) and the second mounting rail (22), the movable clamping plate (7) is slidably connected to the locking member (72), each of the second locking bolts (6) is arranged on both sides of the locking member (72) and is slidably connected to the locking member (72), and each of the second locking bolts (6) is threadedly connected to the sliding member (71).
3. A CNC machining fixture according to claim 2, characterized in that, a limiting spring (61) is sleeved on each of the second locking bolts (6), and two ends of the limiting spring (61) are respectively fixedly connected to the sliding member (71) and the locking member (72).
4. A CNC machining fixture according to claim 2, characterized in that, A plurality of first anti-slip strips (211) are provided on both the first mounting rail (21) and the second mounting rail (22). The first anti-slip strips (211) are parallel to each other. A plurality of second anti-slip strips (31) are provided at the bottom of the fixed clamping plate (3). The second anti-slip strips (31) are engaged with the first anti-slip strips (211). A plurality of third anti-slip strips (725) are provided at the lower end of the locking member (72). The third anti-slip strips (725) are engaged with the first anti-slip strips (211). The cross-sections of the first anti-slip strips (211), the second anti-slip strips (31), and the third anti-slip strips (725) are all triangular structures.
5. A CNC machining fixture according to claim 2, characterized in that, A first sliding rail (721), a second sliding rail (722), a third sliding rail (723), and a fourth sliding rail (724) are fixed to the top of the locking member (72). The central axis of the first sliding rail (721) and the central axis of the second sliding rail (722) are on the same straight line. The central axis of the third sliding rail (723) and the central axis of the fourth sliding rail (724) are on the same straight line. The first sliding rail (721) is parallel to the third sliding rail (723). The cross-sections of the first sliding rail (721), the second sliding rail (722), the third sliding rail (723), and the fourth sliding rail (724) are all isosceles trapezoid structures. The movable clamp (4) includes a first movable clamping member (41) and a second movable clamping member (42). The first movable clamping member (41) is slidably connected to both the first sliding rail (721) and the second sliding rail (722). The second movable clamping member (42) is slidably connected to both the third sliding rail (723) and the fourth sliding rail (724).
6. The CNC machining fixture according to claim 5, wherein, The control structure includes a telescopic member (8). Sliding inclined surfaces (411) are provided on both the first movable clamping member (41) and the second movable clamping member (42). Limit grooves (412) are provided on the sliding inclined surfaces (411). The cross-section of the limit grooves (412) is an isosceles trapezoid structure. The fixed end of the telescopic member (8) is fixedly connected to a sliding member (71). The telescopic end of the telescopic member (8) is fixed with a control member (5). The control member (5) abuts against both the sliding inclined surface (411) and the limit groove (412), and the control member (5) is slidably connected to the limit groove (412).