Machining clamp with limiting mechanism
By designing a limiting mechanism in the machining fixture, including components such as a moving limiting frame, positioning card block and bidirectional screw, the positioning offset problem caused by sliding during the machining process is solved, and higher machining accuracy and stability are achieved.
Patent Information
- Application Number
- CN202422005357.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-19
AI Technical Summary
When existing mechanical machining fixtures clamp and fix the mechanical machining parts, it is easy to cause the parts to slide in a perpendicular to the clamping direction, resulting in position deviation during processing and affecting accuracy.
A mechanical machining fixture with a limiting mechanism is designed, and multi-directional limit fixation of mechanical machining parts is achieved by setting up a mobile limit frame, a positioning card block, a fixed pressure plate, a fixed card block and a fixed bolt. At the same time, a bidirectional screw, a moving seat, a clamping strip and a locking screw sleeve are used to ensure that the clamping strip can be clamped on both sides of the machined parts and adapt to parts of different specifications.
Effectively prevent positional deviation caused by sliding of mechanical parts during processing, improve machining accuracy and stability, and is suitable for mechanical parts of different specifications.
Smart Images
Figure CN223044394U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of machining fixtures, and particularly relates to a machining fixture with a limiting mechanism. Background Technique
[0002] Machining fixtures play a crucial role in the machining process. They are used to fix workpieces to ensure the stability and accuracy of workpieces during machining.
[0003] When the existing machining fixtures clamp and fix machining parts, they generally only clamp and fix the two sides of the machining parts. The machining parts are prone to sliding perpendicular to the clamping direction, resulting in the displacement of the machining parts during the machining process and affecting the machining accuracy. Therefore, improvement is needed. Content of the Utility Model
[0004] In order to overcome the above defects, the utility model provides a machining fixture with a limiting mechanism, which solves the problem that the existing machining fixtures generally only clamp and fix the two sides of the machining parts, and the machining parts are prone to sliding perpendicular to the clamping direction, resulting in the displacement of the machining parts during the machining process.
[0005] To achieve the above purpose, the utility model provides the following technical scheme: A machining fixture with a limiting mechanism includes a mounting frame. One side of the mounting frame is fixedly installed with a mounting base. One side of the top of the mounting base away from the mounting frame is fixedly installed with an end plate. One side of the top of the mounting base close to the mounting frame is fixedly installed with a mounting block. Two sliding rods II are fixedly installed at both ends between the end plate and the mounting block. A moving limiting frame is slidably installed on the surfaces of the two groups of sliding rods II;
[0006] On both sides of the top of the mounting block, mounting rods are symmetrically and fixedly installed respectively. The tops of the two groups of mounting rods are fixedly installed with a connecting plate. And the surfaces of the four groups of mounting rods are slidably installed with a fixed pressing plate. On both sides of the bottom of the fixed pressing plate, multiple groups of fixed clamping blocks are fixedly installed at equal intervals respectively. At the central position of the top of the fixed pressing plate, a fixed bolt is provided, and the fixed bolt passes through the fixed pressing plate and is connected with the mounting block.
[0007] As a further scheme of the utility model: Installation grooves are symmetrically arranged inside both sides of the mounting frame. A bidirectional screw rod is rotatably installed through the central positions of the two groups of installation grooves. On both sides of the bidirectional screw rod inside the installation grooves, sliding rods I are symmetrically and fixedly installed.
[0008] As a further solution of the present utility model: a moving seat is slidably mounted on the surfaces of the bidirectional screw and the two groups of slide bars. A clamping strip is fixedly mounted on the top of the moving seat. Both ends of the bidirectional screw pass through the mounting frame and are fixedly provided with locking studs. A cross plate is fixedly mounted at one end of the locking stud, and a locking nut sleeve is provided on the surface of the locking stud.
[0009] As a further solution of the present utility model: a plurality of positioning card slots are equidistantly arranged at the bottom of both sides of the moving limit frame, and a plurality of fixing card slots are equidistantly arranged at the top of both sides of the moving limit frame, and the fixing card slots correspond to the fixing blocks.
[0010] As a further solution of the present utility model: positioning blocks are symmetrically and fixedly mounted at the tops of both sides of the mounting block, and the positioning blocks correspond to the positioning card slots.
[0011] As a further solution of the present utility model: a top plate is fixedly mounted at one end of the moving limit frame away from the end plate. Slide bars three are fixedly mounted on both sides of the inner top of the moving limit frame, and the slide bars three pass through the mounting block and are slidably connected to the mounting block.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] 1. For the machining fixture with a limiting mechanism, by setting the moving limit frame, positioning blocks, fixed pressing plates, fixed blocks and fixing bolts, loosen the fixing bolts and lift the fixed pressing plates and the moving limit frame upwards, control the movement of the moving limit frame on the top of the mounting block. After moving the top plate to a suitable position on the top of the mounting frame, loosen the moving limit frame so that the positioning blocks are stuck inside the corresponding positioning card slots, and at the same time loosen the fixed pressing plates so that the fixed blocks are inserted into the corresponding fixing card slots, then tighten the fixing bolts to press and fix the fixed pressing plates tightly on the top of the moving limit frame, thereby conveniently adjusting the position of the moving limit frame on the top of the mounting base, enabling the top plate to closely adhere to one side of the machining part and performing multi-directional limiting and fixing on the machining part.
[0014] 2. For the machining fixture with a limiting mechanism, by setting the bidirectional screw, moving seats, clamping strips and locking nut sleeves, after loosening the two groups of locking nut sleeves, hold the two groups of cross plates and rotate them to control the rotation of the bidirectional screw, so that the two groups of moving seats move in opposite directions on the surface of the bidirectional screw until the two groups of clamping strips can clamp on both sides of the machining part, thereby clamping and fixing machining parts of different specifications. Then tighten the locking nut sleeves to lock and fix the bidirectional screw to ensure that the bidirectional screw will not rotate randomly, causing the moving seats to move on both sides of the machining part and loosen the machining part. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0016] Figure 2 This is a schematic cross-sectional view of the three-dimensional structure of the mounting bracket, the bidirectional screw, and the moving seat of the present utility model;
[0017] Figure 3 This is a schematic cross-sectional view of the three-dimensional structure of the mounting base and the moving limit frame of the present utility model;
[0018] Figure 4 This is the present utility model Figure 3 The enlarged three-dimensional structure schematic diagram of the A position in the middle;
[0019] In the figure: 1. Mounting bracket; 2. Mounting groove; 3. Bidirectional screw; 4. First sliding rod; 5. Moving seat; 6. Clamping strip; 7. Locking stud; 8. Cross plate; 9. Locking nut; 10. Mounting base; 11. End plate; 12. Mounting block; 13. Positioning block; 14. Second sliding rod; 15. Moving limit frame; 16. Top plate; 17. Positioning card slot; 18. Fixed card slot; 19. Third sliding rod; 20. Mounting rod; 21. Connecting plate; 22. Fixed pressing plate; 23. Fixed block; 24. Fixed bolt. Specific embodiments
[0020] The technical solutions of this patent will be further described in detail below in conjunction with specific embodiments.
[0021] As Figures 1-4 shown, the present utility model provides a technical solution: a machining fixture with a limiting mechanism, including a mounting bracket 1. Mounting grooves 2 are symmetrically arranged inside both sides of the mounting bracket 1. A bidirectional screw 3 is rotatably mounted through the central positions of the two groups of mounting grooves 2. First sliding rods 4 are symmetrically and fixedly mounted on both sides of the bidirectional screw 3 inside the mounting grooves 2. By providing the bidirectional screw 3, controlling the rotation of the bidirectional screw 3 enables the moving seats 5 on both sides of the bidirectional screw 3 to approach or move away from each other, thereby clamping and fixing or loosening the machining parts.
[0022] The bidirectional screw 3 and the two groups of first sliding rods 4 are slidably mounted with a moving seat 5. A clamping strip 6 is fixedly mounted on the top of the moving seat 5. Due to the provision of the first sliding rod 4, when the moving seat 5 slides on the surface of the first sliding rod 4 as the bidirectional screw 3 rotates, it is ensured that the moving seat 5 will not tilt or deflect during the movement;
[0023] Both ends of the bidirectional screw 3 pass through the mounting bracket 1 and are fixedly mounted with locking studs 7. A cross plate 8 is fixedly mounted at one end of the locking stud 7, and a locking nut 9 is provided on the surface of the locking stud 7. By providing the locking nut 9, tightening the locking nut 9 against one side of the mounting bracket 1 locks and fixes the locking stud 7, ensuring that the bidirectional screw 3 will not rotate randomly.
[0024] On one side of the mounting bracket 1, a mounting base 10 is fixedly installed. On one side of the top of the mounting base 10 away from the mounting bracket 1, an end plate 11 is fixedly installed. On one side of the top of the mounting base 10 close to the mounting bracket 1, a mounting block 12 is fixedly installed. On the tops of both sides of the mounting block 12, positioning blocks 13 are symmetrically and fixedly installed respectively, and the positioning blocks 13 correspond to the positioning slots 17. Due to the provision of the positioning blocks 13, the movement of the movable limiting frame 15 is controlled, ensuring that the positioning blocks 13 are inserted into the positioning slots 17 at different positions at the bottom of the movable limiting frame 15, thereby facilitating the control of the moving distance of the movable limiting frame 15.
[0025] At both ends between the end plate 11 and the mounting block 12, a second sliding rod 14 is fixedly installed. The movable limiting frame 15 is slidably installed on the surfaces of the two groups of second sliding rods 14. Due to the provision of the second sliding rods 14, it is ensured that the movable limiting frame 15 will not deviate when moving between the end plate 11 and the mounting block 12;
[0026] One end of the movable limiting frame 15 away from the end plate 11 is fixedly installed with a top plate 16. On both sides of the inner top of the movable limiting frame 15, a third sliding rod 19 is fixedly installed, and the third sliding rod 19 passes through the mounting block 12 and is slidably connected to the mounting block 12. By providing the third sliding rod 19, when controlling the movement of the movable limiting frame 15 on the top of the mounting block 12, it is ensured that the movable limiting frame 15 will not tilt and deviate on the top of the mounting block 12.
[0027] On the bottom sides of both sides of the movable limiting frame 15, multiple groups of positioning slots 17 are equidistantly provided. On the top sides of both sides of the movable limiting frame 15, multiple groups of fixing slots 18 are equidistantly provided, and the fixing slots 18 correspond to the fixing blocks 23. Due to the provision of the fixing slots 18 and the fixing blocks 23, after the fixing pressing plate 22 is pressed and fixed on the top of the movable limiting frame 15, the fixing blocks 23 are inserted into the corresponding fixing slots 18 inside, thereby clamping and fixing the movable limiting frame 15.
[0028] On both sides of the top of the mounting block 12, mounting rods 20 are symmetrically and fixedly installed respectively. At the tops of the two groups of mounting rods 20, a connecting plate 21 is fixedly installed, and the four groups of mounting rods 20 are slidably installed with a fixing pressing plate 22. On both sides of the bottom of the fixing pressing plate 22, multiple groups of fixing blocks 23 are equidistantly and fixedly installed respectively. By providing the mounting rods 20, it is ensured that when the fixing pressing plate 22 is lifted or released, there will be no position deviation between the fixing pressing plate 22 and the mounting block 12;
[0029] At the central position of the top of the fixing pressing plate 22, a fixing bolt 24 is provided, and the fixing bolt 24 passes through the fixing pressing plate 22 and is connected to the mounting block 12. Due to the provision of the fixing bolt 24, the fixing bolt 24 is tightened to press the fixing pressing plate 22 against the top of the movable limiting frame 15, thereby pressing and fixing the movable limiting frame 15 between the fixing pressing plate 22 and the mounting block 12, ensuring that the movable limiting frame 15 will not move randomly on the top of the mounting block 12.
[0030] The working principle of the present utility model is as follows:
[0031] Loosen the fixing bolt 24, lift up the fixing pressing plate 22 and the moving limit frame 15 upwards, so that the fixing pressing plate 22, the moving limit frame 15 and the mounting block 12 move away from each other. Push the moving limit frame 15 to move on the top of the mounting block 12. After pushing the top plate 16 to a suitable position on the top of the mounting frame 1, loosen the fixing pressing plate 22, the moving limit frame 15 and the mounting block 12, so that the positioning block 13 is inserted into the corresponding positioning slot 17, and the fixing block 23 is inserted into the corresponding fixing slot 18. Tighten the fixing bolt 24 to press and fix the fixing pressing plate 22 on the top of the moving limit frame 15, thereby pressing and fixing the moving limit frame 15. Then loosen the locking nut 9, hold the two cross plates 8 by hand and control the rotation of the bidirectional screw 3 until the distance between the two moving seats 5 moves to a position where a machining part can be placed. Place the machining part on the top of the mounting frame 1 between the two clamping strips 6, and at the same time ensure that the machining part is in contact with the top plate 16. Rotate the cross plate 8 in the reverse direction to make the two moving seats 5 approach each other, and ensure that the clamping strips 6 can clamp on both sides of the machining part, thereby clamping and limiting the position of the machining part on the top of the mounting frame 1 for machining.
[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0033] The above has described the preferred embodiments of this patent in detail, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of this patent.
Claims
1. A machining fixture with a limiting mechanism, comprising a mounting frame (1), characterized in that: A mounting base (10) is fixedly mounted on one side of the mounting frame (1), an end plate (11) is fixedly mounted on the top of the mounting base (10) away from the mounting frame (1), a mounting block (12) is fixedly mounted on the top of the mounting base (10) close to the mounting frame (1), two sliding rods (14) are fixedly mounted at both ends between the end plate (11) and the mounting block (12), and movable limit frames (15) are slidably mounted on the surfaces of the two groups of sliding rods (14); Mounting rods (20) are symmetrically fixedly installed on both sides of the top of the mounting block (12), connecting plates (21) are fixedly installed on the tops of the two groups of mounting rods (20), and fixed pressure plates (22) are slidably installed on the surfaces of the four groups of mounting rods (20), and multiple groups of fixed clamping blocks (23) are equidistantly fixedly installed on both sides of the bottom of the fixed pressure plate (22), and a fixing bolt (24) is provided at the central position of the top of the fixed pressure plate (22), and the fixing bolt (24) passes through the fixed pressure plate (22) and is connected to the mounting block (12).
2. A machining fixture with a limiting mechanism according to claim 1, characterized in that: The mounting frame (1) has mounting grooves (2) symmetrically arranged inside on both sides, and bidirectional screw rods (3) are rotatably installed through the central positions of the two groups of mounting grooves (2), and sliding rods (4) are symmetrically fixedly installed on both sides of the bidirectional screw rods (3) inside the mounting grooves (2).
3. A machining fixture with a limiting mechanism according to claim 2, characterized in that: A movable seat (5) is slidably mounted on the surfaces of the bidirectional screw (3) and the two sets of slide bars (4); a clamping strip (6) is fixedly mounted on the top of the movable seat (5); locking studs (7) are fixedly mounted on both ends of the bidirectional screw (3) through the mounting frame (1); a cross plate (8) is fixedly mounted on one end of the locking stud (7); and a locking screw sleeve (9) is provided on the surface of the locking stud (7).
4. The machining fixture with a limiting mechanism according to claim 1, characterized in that: A plurality of groups of positioning slots (17) are equidistantly arranged at the bottom of both sides of the movable limiting frame (15), and a plurality of groups of fixing slots (18) are equidistantly arranged at the top of both sides of the movable limiting frame (15), and the fixing slots (18) correspond to the fixing blocks (23).
5. A machining fixture with a limiting mechanism according to claim 4, characterized in that: Positioning blocks (13) are symmetrically fixedly mounted on the tops of both sides of the mounting block (12), and the positioning blocks (13) correspond to the positioning slots (17).
6. The machining fixture with a limiting mechanism according to claim 1, characterized in that: A top plate (16) is fixedly mounted on one end of the movable limiting frame (15) away from the end plate (11), and a sliding rod three (19) is fixedly mounted on both sides of the top of the movable limiting frame (15), and the sliding rod three (19) passes through the mounting block (12) and is slidably connected to the mounting block (12).