High-stability machining clamp

Abstract

The utility model relates to a high-stability machining clamp which comprises a base plate, a fixed jaw plate and a movable jaw plate capable of moving back and forth relative to the fixed jaw plate are arranged on the base plate, transverse sliding grooves are formed in the clamping end face of the fixed jaw plate in a left-right spaced mode, and the movable jaw plate can move back and forth relative to the fixed jaw plate. Auxiliary limiting plates are arranged on the two transverse sliding grooves in a left-right sliding mode, and a first locking assembly capable of synchronously locking the two auxiliary limiting plates is further arranged on the fixed jaw plate. The limiting position can be flexibly adjusted according to the outline of the workpiece through the left and right transverse sliding grooves formed in the fixed jaw plate and the sliding type auxiliary limiting plate, and the inclusiveness of the clamp to the special-shaped workpiece is expanded; the auxiliary limiting plate and the fixed jaw form multi-point cooperative clamping, local stress is dispersed, workpiece displacement caused by machining vibration is effectively restrained, and the clamping rigidity is remarkably improved; and meanwhile, synchronous locking of the auxiliary limiting plates on the two sides is achieved through the first locking assembly, traditional tedious operation of adjusting one by one is avoided, and the adjusting time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a highly stable machining fixture. Background Technology

[0002] In the field of machining, fixtures are key devices used to fix workpieces to ensure machining accuracy. Traditional machining fixtures typically employ a combination of fixed and movable jaws, holding the workpiece by the linear movement of the movable jaws. However, the jaws of conventional fixtures are mostly fixed or unidirectionally adjustable. For workpieces with complex, irregular, or asymmetrical shapes, it is difficult to achieve balanced force distribution at multiple points, easily leading to unstable clamping, especially as workpiece displacement can occur during machining due to vibration or changes in cutting forces. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a highly stable machining fixture.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A high-stability machining fixture includes a base plate, a fixed jaw plate and a movable jaw plate that can move back and forth relative to the fixed jaw plate. The clamping end face of the fixed jaw plate is provided with transverse sliding grooves spaced left and right. Auxiliary limiting plates slide left and right on both transverse sliding grooves. The fixed jaw plate is also provided with a first locking component that can lock the two auxiliary limiting plates synchronously.

[0006] In some embodiments, a transverse through groove is provided on the fixed jaw plate, and both transverse sliding grooves are connected to the transverse through groove. The first locking component includes an upper sliding plate seat and a lower sliding plate seat that slide in the transverse through groove. The upper sliding plate seat and the lower sliding plate seat are stacked vertically, and the upper sliding plate seat is fixedly connected to one of the auxiliary limiting plates, and the lower sliding plate seat is fixedly connected to the other auxiliary limiting plate. A locking bolt is also threadedly connected to the fixed jaw plate, and the threaded end of the locking bolt abuts against the upper sliding plate seat.

[0007] In some embodiments, the end faces of the upper and lower sliding plates that are in contact with each other are provided with rubber pads.

[0008] In some embodiments, the system further includes a base, a lead screw, and a lead screw nut. The base is disposed on the base plate, the lead screw nut is disposed on the base, the lead screw and the lead screw nut are threadedly connected, and one end of the lead screw is rotatably disposed on the movable jaw plate.

[0009] In some embodiments, the seat body slides back and forth on the base plate, and a second locking component is also provided on the seat body, which can lock the seat body to the base plate.

[0010] In some embodiments, slide rail grooves extending in the front-back direction are provided on both the left and right sides of the base plate, and sliding members sliding in the slide rail grooves are provided at both the left and right ends of the seat body.

[0011] In some embodiments, the second locking component includes a plurality of threaded holes spaced apart in the inner wall of the slide rail groove along the front-back direction, and a fixing bolt is threadedly connected to the sliding member, the fixing bolt being threadedly connected to the threaded holes.

[0012] In some embodiments, an assisting screw is provided at the outer end of the lead screw.

[0013] In some embodiments, anti-slip protrusions are provided on the clamping end faces of both the fixed jaw plate and the movable jaw plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the left and right transverse sliding grooves and sliding auxiliary limiting plates provided on the fixed jaw plate can flexibly adjust the limiting position according to the workpiece contour, expanding the clamp's tolerance for irregularly shaped workpieces; the auxiliary limiting plates and the fixed jaw form multi-point coordinated clamping, dispersing local stress, effectively suppressing workpiece displacement caused by processing vibration, and significantly improving clamping rigidity; at the same time, the first locking component realizes the synchronous locking of the auxiliary limiting plates on both sides, avoiding the tedious operation of traditional individual adjustment and reducing adjustment time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 This utility model Figure 2 Schematic diagram of section AA;

[0019] Figure 4 This is a partially exploded view of the present invention. Detailed Implementation

[0020] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0021] like Figures 1-4 The high-stability machining fixture shown includes a base plate 1, a fixed jaw plate 2 and a movable jaw plate 3 that can move back and forth relative to the fixed jaw plate 2. The clamping end face of the fixed jaw plate 2 is provided with transverse sliding grooves 4 spaced left and right. Auxiliary limiting plates 5 slide left and right on both transverse sliding grooves 4. The fixed jaw plate 2 is also provided with a first locking component that can lock the two auxiliary limiting plates 5 synchronously.

[0022] According to the above structure, the left and right transverse sliding grooves 4 and sliding auxiliary limiting plates 5 provided on the fixed jaw plate 2 can flexibly adjust the limiting position according to the workpiece contour, expanding the clamp's tolerance for irregularly shaped workpieces; the auxiliary limiting plates 5 and the fixed jaw plate 2 form multi-point coordinated clamping, dispersing local stress, effectively suppressing workpiece displacement caused by processing vibration, and significantly improving clamping rigidity; at the same time, the first locking component realizes the synchronous locking of the auxiliary limiting plates 5 on both sides, avoiding the tedious operation of traditional individual adjustment and reducing adjustment time.

[0023] Furthermore, a transverse through groove 21 is provided on the fixed jaw plate 2, and both transverse sliding grooves 4 are connected to the transverse through groove 21. The first locking component includes an upper sliding plate seat 22 and a lower sliding plate seat 23 that slide in the transverse through groove 21. The upper sliding plate seat 22 and the lower sliding plate seat 23 are stacked vertically, and the upper sliding plate seat 22 is fixedly connected to one of the auxiliary limiting plates 5, and the lower sliding plate seat 23 is fixedly connected to the other auxiliary limiting plate 5. A locking bolt 24 is also threadedly connected to the fixed jaw plate 2, and the threaded end of the locking bolt 24 abuts against the upper sliding plate seat 22.

[0024] A transverse through groove 21 is opened in the middle of the fixed jaw plate 2, and an upper sliding plate seat 22 and a lower sliding plate seat 23 are installed inside. The two are stacked on top of each other through dovetail grooves or guide rails. The upper sliding plate seat 22 and the lower sliding plate seat 23 can slide left and right relative to each other, thereby driving the clamping and tightening of the auxiliary limiting plates 5 on both sides. Then, during the locking operation, when the locking bolt 24 presses against the upper sliding plate seat 22, the pressure is transmitted to the lower sliding plate seat 23 through the stacking of the upper and lower sliding plates, ensuring that the limiting plates on both sides are balanced by force.

[0025] Furthermore, rubber pads are provided on the end faces of the upper sliding plate seat 22 and the lower sliding plate seat 23 that are in contact with each other; the rubber pads increase the friction of the contact surfaces of the upper and lower sliding plate seats, prevent sliding after locking, and absorb processing vibrations to improve stability.

[0026] This utility model also includes a base 41, a lead screw 42, and a lead screw nut 43. The base 41 is disposed on the base plate 1, and the lead screw nut 43 is disposed on the base 41. The lead screw 42 and the lead screw nut 43 are threadedly connected, and one end is rotatably disposed on the movable jaw plate 3. Through the cooperation of the lead screw 42 and the lead screw nut 43, the movable jaw plate 3 can be moved smoothly and accurately to adapt to workpieces of different sizes.

[0027] Furthermore, the seat 41 slides back and forth on the base plate 1, and a second locking component is also provided on the seat 41. The second locking component can lock the seat 41 on the base plate 1. The seat 41 can slide back and forth, thereby expanding the stroke range of the fixture and adapting to extra-long or special workpieces.

[0028] The base plate 1 has slide rail grooves 61 extending in the front-back direction on both the left and right sides. The seat body 41 has sliding members 62 that slide in the slide rail grooves 61 at both the left and right ends. The slide rail grooves 61 and the sliding members 62 cooperate to ensure the straightness of the seat body 41 moving back and forth and avoid deviation.

[0029] The second locking component includes a plurality of threaded holes 71 spaced apart along the front-back direction on the inner wall of the slide rail groove 61. A fixing bolt 72 is threadedly connected to the sliding member 62, and the fixing bolt 72 can be threadedly connected to the threaded holes 71. The threaded holes 71 on the inner wall of the slide rail groove 61 provide multiple locking positions to adapt to different clamping requirements. The fixing bolt 72 can be screwed into the corresponding threaded hole 71 to complete the locking, which is simple to operate.

[0030] An assisting screw 81 is provided at the outer end of the lead screw 42. By rotating the assisting screw 81, the lead screw 42 can be driven quickly, thereby improving efficiency. At the same time, the assisting screw 81 extends the lever arm, reducing the torque required to rotate the lead screw 42, which is suitable for clamping large workpieces.

[0031] Anti-slip ridges are provided on the clamping end faces of both the fixed jaw plate 2 and the movable jaw plate 3. The anti-slip ridges increase the friction between the jaws and the workpiece, preventing the workpiece from sliding during processing.

[0032] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-stability machining fixture, comprising a base plate (1), wherein a fixed jaw plate (2) and a movable jaw plate (3) capable of moving back and forth relative to the fixed jaw plate (2) are disposed on the base plate (1), characterized in that: On the clamping end face of the fixed jaw plate (2), there are transverse sliding grooves (4) spaced apart on the left and right. On each of the two transverse sliding grooves (4), there are auxiliary limiting plates (5) that slide left and right. On the fixed jaw plate (2), there is also a first locking component that can lock the two auxiliary limiting plates (5) synchronously.

2. The high-stability machining fixture according to claim 1, characterized in that: A transverse through groove (21) is also provided on the fixed jaw plate (2), and both transverse sliding grooves (4) are connected to the transverse through groove (21). The first locking component includes an upper sliding plate seat (22) and a lower sliding plate seat (23) that slide in the transverse through groove (21). The upper sliding plate seat (22) and the lower sliding plate seat (23) are stacked on top of each other. The upper sliding plate seat (22) is fixedly connected to one of the auxiliary limiting plates (5), and the lower sliding plate seat (23) is fixedly connected to the other auxiliary limiting plate (5). A locking bolt (24) is also threadedly connected to the fixed jaw plate (2), and the threaded end of the locking bolt (24) abuts against the upper sliding plate seat (22).

3. The high-stability machining fixture according to claim 2, characterized in that: Rubber pads are provided on the end faces of the upper sliding plate seat (22) and the lower sliding plate seat (23) that are in contact with each other.

4. The high-stability machining fixture according to claim 1, characterized in that: It also includes a base (41), a lead screw (42) and a lead screw nut (43). The base (41) is mounted on the base plate (1), and the lead screw nut (43) is mounted on the base (41). The lead screw (42) is threadedly connected to the lead screw nut (43), and one end is rotatably mounted on the movable jaw plate (3).

5. A high-stability machining fixture according to claim 4, characterized in that: The seat (41) slides back and forth on the base plate (1), and a second locking component is also provided on the seat (41), which can lock the seat (41) on the base plate (1).

6. A high-stability machining fixture according to claim 5, characterized in that: The base plate (1) is provided with slide rail grooves (61) extending in the front-back direction on both the left and right sides, and the seat body (41) is provided with sliding members (62) sliding in the slide rail grooves (61) at both the left and right ends.

7. A high-stability machining fixture according to claim 6, characterized in that: The second locking component includes a plurality of threaded holes (71) spaced apart in the inner wall of the slide rail groove (61) along the front-back direction, and a fixing bolt (72) is threadedly connected to the sliding member (62), the fixing bolt (72) being threadedly connected to the threaded holes (71).

8. A high-stability machining fixture according to claim 4, characterized in that: An assisting screw (81) is provided at the outer end of the lead screw (42).

9. A high-stability machining fixture according to claim 1, characterized in that: Anti-slip ridges are provided on the clamping end faces of both the fixed jaw plate (2) and the movable jaw plate (3).

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