A height-adjustable clamping fixture

Abstract

This utility model provides a height-adjustable clamping fixture, including a base, a slide rod, a pressure plate, and a bracket. The surface of the base has a sliding groove. One end of the slide rod is fitted into the sliding groove, and the other end of the slide rod is hinged to the bracket. The surface of the bracket has a guide hole and several limiting holes. Each limiting hole communicates with the guide hole, and any two adjacent limiting holes are separated from each other. One end of the pressure plate is fixedly connected to a guide pin, which is fitted into one of the limiting holes. When a workpiece is clamped between the other end of the pressure plate and the base, at least one end of the bracket abuts against the surface of the base. Using the technical solution of this utility model, for workpieces of different thicknesses or shapes, by fitting the guide pin into different limiting holes, the clamping height between the pressure plate and the base can be adjusted. Furthermore, by moving the slide rod along the sliding groove, the pressure position of the workpiece can be adjusted, making the clamping elements and clamping devices as universal as possible and expanding the application scope of this utility model.

Description

Technical Field

[0001] This utility model belongs to the field of clamping technology, and in particular relates to a height-adjustable clamping fixture. Background Technology

[0002] In the cutting process, in order to obtain a stable positioning position for the workpiece, various types of special fixtures are usually designed and manufactured for clamping the workpiece. Existing cutting fixtures can generally only be used to clamp one type or one shape of workpiece, and their versatility and applicability are low.

[0003] For example, patent document CN220740909U discloses a disc-shaped workpiece clamping device, including a base and multiple edge clamps. Each edge clamp includes a pad, a pressure plate, a main support rod, and a secondary support rod. The surface of the base has radial grooves, and the lower end of the pad is fitted into these grooves. The surface of the pressure plate has radial guide holes, and the main support rod passes through these guide holes. The upper end of the main support rod is screwed to a locking nut. The lower ends of both the main and secondary support rods are screwed to the base. The upper end of the secondary support rod abuts against one end of the pressure plate, clamping the edge of the disc-shaped workpiece between the other end of the pressure plate and the upper end of the pad. Using this patented technology, the pad and pressure plate can be adjusted along the radial direction of the disc-shaped workpiece, ensuring that the pressure exerted by the pressure plate on the workpiece and the supporting force exerted by the pad on the workpiece are consistent. This results in more uniform force distribution on the upper and lower surfaces of the workpiece, making the workpiece clamping stable and reliable.

[0004] Existing height-adjustable clamping fixtures generally include various components such as support elements, positioning elements, and clamping elements. Currently, support elements and positioning elements have gradually established corresponding standards and specifications, achieving serialization and universalization. However, due to the different shapes of workpieces, it is difficult to establish corresponding standards and specifications for clamping elements and their clamping devices, making it difficult to achieve serialization and universalization. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a height-adjustable clamping fixture.

[0006] This utility model is achieved through the following technical solution.

[0007] This utility model provides a height-adjustable clamping fixture, including a base, a slide rod, a pressure plate, and a bracket. The surface of the base is provided with a sliding groove, one end of the slide rod is fitted into the sliding groove, and the other end of the slide rod is hinged to the bracket. The surface of the bracket is provided with a guide hole and several limiting holes, each limiting hole communicating with the guide hole, and any two adjacent limiting holes are separated from each other. One end of the pressure plate is fixedly connected to a guide pin, and the guide pin is fitted into one of the limiting holes. When a workpiece is clamped between the other end of the pressure plate and the base, at least one end of the bracket abuts against the surface of the base.

[0008] The height-adjustable clamping fixture also includes a first rocker arm, a second rocker arm, and a sleeve. The sleeve is hinged to the bracket using a pin. One end of the first rocker arm is fitted into the sleeve, and the other end of the first rocker arm is screwed to one end of the second rocker arm. The other end of the second rocker arm is also hinged to the pressure plate.

[0009] The surface of the first rocker arm is also provided with an anti-rotation groove, and the pin extends into the anti-rotation groove.

[0010] The pin can be replaced by a screw.

[0011] The surface of the first rocker arm is also knurled.

[0012] The limiting hole is a semi-circular through hole, and the guide hole is an oval through hole.

[0013] The base is disc-shaped, and the length direction of the groove is consistent with the radial direction of the base.

[0014] The cross-section of the chute is a dovetail groove shape with a groove opening width smaller than the groove bottom width.

[0015] The support frame is shaped like a fan-shaped thin plate.

[0016] The surface of the bracket is also provided with weight-reducing holes.

[0017] The beneficial effects of this utility model are as follows: When the workpiece is clamped between the other end of the pressure plate and the base using the technical solution of this utility model, at least one end of the bracket abuts against the surface of the base. According to the lever principle, the workpiece can be stably and reliably clamped between the pressure plate and the base. For workpieces of different thicknesses or shapes, the clamping height between the pressure plate and the base can be adjusted by fitting the guide pin into different limiting holes. In addition, the position of the workpiece under pressure can be adjusted by moving the slide rod along the slide groove. Compared with the prior art, this utility model can be applied to clamping workpieces of different shapes or sizes, making the clamping elements and clamping devices as universal as possible, thus expanding the scope of application of this utility model. Attached Figure Description

[0018] Figure 1 This is the front view of this utility model;

[0019] Figure 2 It is along the present utility model Figure 1 A sectional view cut along plane AA.

[0020] In the diagram: 1-base, 2-slide rod, 3-pressure plate, 4-bracket, 5-slide groove, 6-guide hole, 7-limiting hole, 8-guide pin, 9-workpiece, 10-first rocker arm, 11-second rocker arm, 12-sleeve, 13-pin, 14-anti-rotation groove, 15-knurling, 16-weight reduction hole, 17-limiting pin. Detailed Implementation

[0021] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0022] like Figure 1 , Figure 2 As shown, this utility model provides a height-adjustable clamping fixture, including a base 1, a slide rod 2, a pressure plate 3, and a bracket 4. The surface of the base 1 is provided with a slide groove 5. One end of the slide rod 2 is fitted into the slide groove 5, and the other end of the slide rod 2 is hinged to the bracket 4. The surface of the bracket 4 is provided with a guide hole 6 and several limiting holes 7. Each limiting hole 7 is connected to the guide hole 6, and any two adjacent limiting holes 7 are separated from each other. One end of the pressure plate 3 is fixedly connected to a guide pin 8, and the guide pin 8 is fitted into one of the limiting holes 7. When the workpiece 9 is clamped between the other end of the pressure plate 3 and the base 1, at least one end of the bracket 4 abuts against the surface of the base 1.

[0023] By employing the technical solution of this utility model, when a workpiece is clamped between the other end of the pressure plate and the base, at least one end of the bracket abuts against the surface of the base. Based on the lever principle, the workpiece can be stably and reliably clamped between the pressure plate and the base. For workpieces of different thicknesses or shapes, the clamping height between the pressure plate and the base can be adjusted by fitting the guide pin into different limiting holes. In addition, the position of the workpiece under pressure can be adjusted by moving the slide rod along the slide groove. Compared with the prior art, this utility model is applicable to clamping workpieces of different shapes or sizes, making the clamping elements and clamping devices as universal as possible, thus expanding the scope of application of this utility model.

[0024] Specifically, the height-adjustable clamping fixture also includes a first rocker arm 10, a second rocker arm 11, and a sleeve 12. The sleeve 12 is hinged to the bracket 4 using a pin 13. One end of the first rocker arm 10 is fitted into the sleeve 12, and the other end of the first rocker arm 10 is screwed to one end of the second rocker arm 11. The other end of the second rocker arm 11 is also hinged to the pressure plate 3. Using the technical solution of this utility model, the first rocker arm 10, the second rocker arm 11, and the sleeve 12 form a control mechanism, making it easier to stably clamp the workpiece between the pressure plate and the base. By adjusting the axial relative position of the sleeve 12 to the first rocker arm 10, the magnitude of the clamping force generated by the pressure plate on the workpiece can be adjusted. This also allows the utility model to adapt to clamping workpieces of different thicknesses, further expanding the applicability and versatility of this utility model.

[0025] In addition, the surface of the first rocker arm 10 is provided with an anti-rotation groove 14, and the pin 13 extends into the anti-rotation groove 14. By employing the technical solution of this utility model, the pin 13 extending into the anti-rotation groove 14 can prevent the first rocker arm 10 from rotating around its own central axis. The pin 13 can be replaced by a screw. The surface of the first rocker arm 10 is also provided with knurling 15.

[0026] In addition, the limiting hole 7 is a semi-circular through hole, and the guide hole 6 is an oval through hole. The base 1 is disc-shaped, and the length direction of the slide groove 5 is consistent with the radial direction of the base 1. The cross-section of the slide groove 5 is a dovetail groove shape with the groove opening width being smaller than the groove bottom width. The bracket 4 is generally a fan-shaped thin plate. The surface of the bracket 4 is also provided with weight reduction holes 16. The pressure plate 3 is also fixedly connected to one end of the limiting pin 17, and the other end of the limiting pin 17 abuts against the edge of the workpiece 9.

Claims

1. A height-adjustable clamping fixture, characterized in that: The device includes a base (1), a slide rod (2), a pressure plate (3), and a bracket (4). The surface of the base (1) is provided with a slide groove (5). One end of the slide rod (2) is fitted into the slide groove (5), and the other end of the slide rod (2) is hinged to the bracket (4). The surface of the bracket (4) is provided with a guide hole (6) and several limiting holes (7). Each limiting hole (7) is connected to the guide hole (6), and any two adjacent limiting holes (7) are separated from each other. One end of the pressure plate (3) is fixedly connected to a guide pin (8), and the guide pin (8) is fitted into one of the limiting holes (7). When the workpiece (9) is clamped between the other end of the pressure plate (3) and the base (1), at least one end of the bracket (4) abuts against the surface of the base (1).

2. The height adjustable clamping fixture of claim 1, wherein: The height-adjustable clamping fixture also includes a first rocker arm (10), a second rocker arm (11), and a sleeve (12). The sleeve (12) is hinged to the bracket (4) using a pin (13). One end of the first rocker arm (10) is fitted into the sleeve (12), and the other end of the first rocker arm (10) is screwed to one end of the second rocker arm (11). The other end of the second rocker arm (11) is also hinged to the pressure plate (3).

3. The height adjustable clamping fixture of claim 2, wherein: The surface of the first rocker arm (10) is also provided with an anti-rotation groove (14), and the pin (13) extends into the anti-rotation groove (14).

4. A height adjustable clamping fixture according to claim 2 or 3, wherein: The pin (13) can be replaced by a screw.

5. The height adjustable clamping fixture of claim 2, wherein: The surface of the first rocker (10) is also provided with knurling (15).

6. The height adjustable clamping fixture of claim 1, wherein: The limiting hole (7) is a semi-circular through hole, and the guide hole (6) is an oval through hole.

7. The height adjustable clamping fixture of claim 1, wherein: The base (1) is disc-shaped, and the length direction of the groove (5) is consistent with the radial direction of the base (1).

8. The height-adjustable clamping fixture as described in claim 1 or 7, characterized in that: The cross-section of the groove (5) is a dovetail groove shape with a groove opening width smaller than the groove bottom width.

9. The height adjustable clamping fixture of claim 1, wherein: The bracket (4) is in the shape of a fan-shaped thin plate.

10. The height-adjustable clamping fixture according to claim 1 or 9, characterized in that: The surface of the bracket (4) is also provided with weight reduction holes (16).

Images