Clamping device for precision machining

Abstract

The utility model relates to a clamping device for precision machining. Comprising a base, a supporting plate used for supporting a workpiece, a clamping plate used for clamping the workpiece, a moving assembly used for driving the clamping plate to move, a limiting frame arranged at the top of the base and a driving device used for driving the moving assembly to move. The supporting plate is mounted in the top center of the base; two groups of driving devices which are symmetrically placed are mounted on the base; the driving ends of the two groups of driving devices are connected with moving assemblies; the two ends of the two moving assemblies slide on the two limiting frames correspondingly. And clamping plates are detachably mounted on the two moving assemblies. According to the technical scheme, the problems that in the prior art, when a clamping piece clamps a workpiece for a long time, the surface of the clamping piece is prone to abrasion and even deformation, so that the clamping piece needs to be replaced irregularly, a worker cannot replace the clamping piece independently, only the whole machining clamp can be replaced, and the work efficiency is high are solved. And therefore, the use cost of the machining clamp is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to precision machinery processing equipment field especially, relates to a clamping device for precision machinery processing. BACKGROUND

[0002] In the machining process of precision machinery parts, the cutting, polishing, stamping, hole machining and other machining of workpieces must strictly meet the design requirements, therefore, it is necessary to use a clamp to fix the mechanical parts, ensure that it is in a stable state during machining, and avoid workpiece deviation caused by machining part deviation.

[0003] In the prior art, the clamping part and the driving unit of the machining clamp are usually of an integral structure, the clamping part surface is prone to wear or even deformation during long-term clamping of the workpiece, therefore, the clamping part needs to be replaced irregularly, but the staff cannot replace the clamping part alone, and only the entire machining clamp can be replaced, which increases the use cost of the machining clamp. UTILITY MODEL CONTENT

[0004] The embodiment of the application provides a clamping device for precision machining, which solves the technical problem that in the prior art, the clamping part and the driving unit of the machining clamp are usually of an integral structure, the clamping part surface is prone to wear or even deformation during long-term clamping of the workpiece, therefore, the clamping part needs to be replaced irregularly, but the staff cannot replace the clamping part alone, and only the entire machining clamp can be replaced, which increases the use cost of the machining clamp.

[0005] The technical scheme adopted by the embodiment of the application is as follows:

[0006] A clamping device for precision machining, comprising a base, a support plate for supporting a workpiece, a clamping plate for clamping the workpiece, a moving assembly for moving the clamping plate, a limiting frame arranged on the top of the base, and a driving device for driving the moving assembly to move; the support plate is installed at the center of the top of the base; two groups of the driving device are installed on the base in a symmetrical manner; the moving assembly is connected to the driving end of the two groups of the driving device; the two ends of the two groups of the moving assembly are respectively slid on the two groups of the limiting frame; the clamping plate is detachably installed on the two groups of the moving assembly.

[0007] Further technical solutions are as follows: the moving assembly comprises a connecting plate, a bent block for supporting the clamping plate, fixing blocks arranged at two ends of the connecting plate, fixing members for fixing the clamping plate, a buffer assembly for buffering the connecting plate, and a moving plate arranged at a driving end of the driving device; the bent block is arranged at a bottom end of the connecting plate; the fixing members are detachably connected to the fixing blocks and the clamping plate; a plurality of groups of the buffer assemblies arranged in a linear array are arranged between the connecting plate and the moving plate.

[0008] Further technical solutions are as follows: the buffer assembly comprises a spring for buffering the connecting plate and a telescopic rod for limiting the spring; the spring is arranged around the telescopic rod; a telescopic end of the telescopic rod is connected to the connecting plate; the other end of the telescopic rod is connected to the moving plate.

[0009] Further technical solutions are as follows: the fixing member is a bolt.

[0010] Further technical solutions are as follows: the driving device is a pneumatic cylinder.

[0011] Further technical solutions are as follows: the clamping plate is provided with a plurality of groups of damping blocks arranged in a linear array.

[0012] One or more technical solutions provided in the embodiments of the application have at least the following technical effects or advantages:

[0013] 1、Since the base, the supporting plate, the clamping plate, the moving assembly, the limiting frame and the driving device are arranged, when the workpiece needs to be clamped and fixed, the workpiece is first placed on the top of the supporting plate, then the driving ends of the two groups of driving devices are simultaneously extended to drive the two groups of moving assemblies to move in the direction of approaching the supporting plate along the limiting frame, and when the clamping plates installed on the two groups of moving assemblies simultaneously abut against the two ends of the workpiece, the workpiece placed on the supporting plate can be effectively fixed. Since the clamping plate installed on the moving assembly is threadedly fixed by the fixing member, when the clamping plate needs to be replaced after long-term use, the worker only needs to detach the fixing member threadedly connected to the two fixing blocks, so that the clamping plate can be removed from the moving assembly for replacement. The whole operation process is simple and reliable, and is convenient for the worker to operate, and the use cost of the clamping device is reduced to a certain extent.

[0014] 2. Due to the use of springs and telescopic rods, when the clamping plates abut against the workpiece, the clamping plates exert a certain compressive force on the springs and telescopic rods through the connecting plate, compressing them. This causes the springs to generate a reaction force on the connecting plate, thus providing a buffering effect on the workpiece. Therefore, the two sets of clamping plates can protect the workpiece to a certain extent when clamping and fixing it. When the spring is in a compressed state, the telescopic rod can prevent the spring from deforming, thus protecting the spring to a certain extent.

[0015] 3. Due to the use of damping blocks, when the clamping plate abuts against the workpiece, the damping blocks on the clamping plate will come into contact with the workpiece, thereby increasing the friction between the clamping plate and the workpiece. Therefore, the two sets of clamping plates can better clamp and fix the workpiece. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a clamping device for precision machining in an embodiment of this utility model.

[0017] Figure 2 This is a partial structural diagram illustrating the mobile component in an embodiment of this utility model.

[0018] Figure 3 This is a partial structural schematic diagram illustrating the buffer component in an embodiment of this utility model.

[0019] In the diagram: 1. Base; 2. Support plate; 3. Clamping plate; 31. Damping block; 4. Moving component; 41. Connecting plate; 42. Bending block; 43. Fixing block; 44. Fixing component; 45. Buffer component; 451. Spring; 452. Telescopic rod; 46. Moving plate; 5. Limiting frame; 6. Drive device. Detailed Implementation

[0020] This application provides a clamping device for precision machining, which solves the technical problem that in the prior art, the clamping component and the driving unit of the machining fixture are usually an integral structure. When the clamping component clamps the workpiece for a long time, the surface of the clamping component is prone to wear or even deformation. Therefore, the clamping component needs to be replaced from time to time. However, the operator cannot replace the clamping component alone, but can only replace the entire machining fixture, which leads to an increase in the cost of using the machining fixture.

[0021] The technical solution in this application is to solve the above problems, and the overall approach is as follows:

[0022] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] A clamping device for precision machining, such as Figure 1 and Figure 2 As shown in the drawings, it comprises a base 1, a support plate 2 for supporting a workpiece, a clamping plate 3 for clamping the workpiece, a moving assembly 4 for moving the clamping plate 3, a limiting frame 5 arranged on the top of the base 1, and a driving device 6 for driving the moving assembly 4 to move. The support plate 2 is installed at the center of the top of the base 1. Two sets of driving devices 6 are installed on the base 1 in a symmetrical manner. The moving assembly 4 is connected to the driving end of each of the two sets of driving devices 6. The two ends of the two sets of moving assemblies 4 are respectively slidably arranged on the two sets of limiting frames 5. The clamping plate 3 is detachably installed on the two sets of moving assemblies 4.

[0024] The moving assembly 4 comprises a connecting plate 41, a bent block 42 for supporting the clamping plate 3, a fixing block 43 arranged at both ends of the connecting plate 41, a fixing member 44 for fixing the clamping plate 3, a buffer assembly 45 for buffering the connecting plate 41, and a moving plate 46 arranged at the driving end of the driving device 6. The bent block 42 is arranged at the bottom end of the connecting plate 41. The fixing member 44 is detachably connected to the fixing block 43 and the clamping plate 3. A plurality of buffer assemblies 45 arranged in a linear array are arranged between the connecting plate 41 and the moving plate 46.

[0025] The support plate 2 is fixedly installed at the center of the top of the base 1. Two sets of limiting frames 5 are fixedly connected to the top of the base 1 in a symmetrical manner with the support plate 2. Two sets of driving devices 6 are fixedly installed on the top of the base 1 in a symmetrical manner. The driving device 6 is preferably a pneumatic cylinder. The moving assembly 4 is drivingly connected to the driving end of each of the two sets of driving devices 6. The fixing block 43 is fixedly connected to both ends of the connecting plate 41. The moving plate 46 is fixedly connected to the driving end of the driving device 6. The bent block 42 is fixedly connected to the bottom end of the connecting plate 41. The fixing member 44 is preferably a bolt. Threaded holes adapted to the fixing member 44 are formed at both ends of the clamping plate 3. The two sets of fixing members 44 are detachably threaded through the corresponding fixing blocks 43 and are threadedly connected to the clamping plate 3. Five sets of buffer assemblies 45 arranged in a linear array are fixedly connected between the connecting plate 41 and the moving plate 46.

[0026] Due to the arrangement of the base 1, the supporting plate 2, the clamping plate 3, the moving assembly 4, the limiting frame 5 and the driving device 6, when the workpiece needs to be clamped and fixed, first place the workpiece on the top of the supporting plate 2, then simultaneously extend the driving ends of the two groups of driving devices 6, drive the two groups of moving assemblies 4 to move in the direction of approaching the supporting plate 2 along the limiting frame 5, when the clamping plates 3 installed on the two groups of moving assemblies 4 abut against both ends of the workpiece at the same time, the workpiece placed on the supporting plate 2 can be effectively fixed. Since the clamping plate 3 installed on the moving assembly 4 is screwed by the fixing piece 44, when the clamping plate 3 needs to be replaced after long-term use, the worker only needs to disassemble the fixing piece 44 screwed on the two groups of fixing blocks 43, and then the clamping plate 3 can be removed from the moving assembly 4 for replacement. The whole operation process is simple and reliable, convenient for the worker to operate, and reduces the use cost of the clamping device to a certain extent.

[0027] As shown in Figure 3 , the buffer assembly 45 includes a spring 451 for buffering the connecting plate 41 and a telescopic rod 452 for limiting the spring 451. The spring 451 is arranged around the telescopic rod 452. The telescopic end of the telescopic rod 452 is connected to the connecting plate 41. The other end of the telescopic rod 452 is connected to the moving plate 46.

[0028] The telescopic end of the telescopic rod 452 is fixedly connected to the connecting plate 41. The other end of the telescopic rod 452 is fixedly connected to the moving plate 46. One end of the spring 451 is fixedly connected to the connecting plate 41. The other end of the telescopic rod 452 is fixedly connected to the moving plate 46.

[0029] Due to the arrangement of the spring 451 and the telescopic rod 452, when the clamping plate 3 abuts against the workpiece, the clamping plate 3 will cause the connecting plate 41 to generate a certain extrusion force on the spring 451 and the telescopic rod 452, and compress the spring 451 and the telescopic rod 452, so that the spring 451 generates a certain reaction force on the connecting plate 41, thereby enabling the clamping plate 3 to generate a certain buffering effect on the workpiece, so that the two clamping plates 3 can protect the workpiece when clamping and fixing the workpiece. When the spring 451 is in a compressed state, the telescopic rod 452 can prevent the spring 451 from deforming, thereby protecting the spring 451 to a certain extent.

[0030] As shown in Figure 1 , the clamping plate 3 is provided with a plurality of groups of damping blocks 31 arranged in a straight line array.

[0031] The clamping plate 3 is fixedly connected with a plurality of groups of damping blocks 31 arranged in a straight line array.

[0032] Since the damping block 31 is arranged, when the clamping plate 3 abuts against the workpiece, the damping block 31 on the clamping plate 3 contacts the workpiece, thereby increasing the friction between the clamping plate 3 and the workpiece, so that the two groups of clamping plates 3 can better clamp and fix the workpiece.

[0033] Although preferred embodiments of the present application have been described, those skilled in the art who understand the basic inventive concept can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0034] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A clamping device for precision machining, characterized by, The utility model provides a workpiece clamping device, including base (1), support the workpiece's support plate (2), the clamping plate (3) for clamping workpiece, the moving assembly (4) for driving the clamping plate (3) moves, the limiting frame (5) of setting at the base (1) top and the drive arrangement (6) for driving the moving assembly (4) moves, the support plate (2) installation is at the base (1) top center, the base (1) is installed with two groups symmetry and is placed the drive arrangement (6), and two groups drive end of drive arrangement (6) are connected with moving assembly (4), and two groups moving assembly (4) both ends are slid on two groups limiting frame (5) respectively, and two groups moving assembly (4) are all detachably installed with clamping plate (3).

2. The chucking device for precision machining according to claim 1, wherein The utility model provides a workpiece clamping device, including base (1), support the workpiece's support plate (2), the clamping plate (3) for clamping workpiece, the moving assembly (4) for driving the clamping plate (3) moves, the limiting frame (5) of setting at the base (1) top and the drive arrangement (6) for driving the moving assembly (4) moves, the support plate (2) installation is at the base (1) top center, the base (1) is installed with two groups symmetry and is placed the drive arrangement (6), and two groups drive end of drive arrangement (6) are connected with moving assembly (4), and two groups moving assembly (4) both ends are slid on two groups limiting frame (5) respectively, and two groups moving assembly (4) are all detachably installed with clamping plate (3).

3. The chucking device for precision machining according to claim 2, wherein The utility model discloses a workpiece clamping device, including base (1), support the workpiece's support plate (2), the clamping plate (3) for clamping workpiece, the moving assembly (4) for driving the clamping plate (3) moves, the limiting frame (5) of setting at the base (1) top and the drive arrangement (6) for driving the moving assembly (4) moves, the support plate (2) installation is at the base (1) top center, the base (1) is installed with two groups symmetry and is placed the drive arrangement (6), and two groups drive end of drive arrangement (6) are connected with moving assembly (4), and two groups moving assembly (4) both ends are slid on two groups limiting frame (5) respectively, and two groups moving assembly (4) are all detachably installed with clamping plate (3).

4. The chucking device for precision machining according to claim 2, wherein The utility model discloses a workpiece clamping device, including base (1), support the workpiece's support plate (2), the clamping plate (3) for clamping workpiece, the moving assembly (4) for driving the clamping plate (3) moves, the limiting frame (5) of setting at the base (1) top and the drive arrangement (6) for driving the moving assembly (4) moves, the support plate (2) installation is at the base (1) top center, the base (1) is installed with two groups symmetry and is placed the drive arrangement (6), and two groups drive end of drive arrangement (6) are connected with moving assembly (4), and two groups moving assembly (4) both ends are slid on two groups limiting frame (5) respectively, and two groups moving assembly (4) are all detachably installed with clamping plate (3).

5. The precision machining chuck of claim 1 wherein, The utility model discloses a workpiece clamping device, including base (1), support the workpiece's support plate (2), the clamping plate (3) for clamping workpiece, the moving assembly (4) for driving the clamping plate (3) moves, the limiting frame (5) of setting at the base (1) top and the drive arrangement (6) for driving the moving assembly (4) moves, the support plate (2) installation is at the base (1) top center, the base (1) is installed with two groups symmetry and is placed the drive arrangement (6), and two groups drive end of drive arrangement (6) are connected with moving assembly (4), and two groups moving assembly (4) both ends are slid on two groups limiting frame (5) respectively, and two groups moving assembly (4) are all detachably installed with clamping plate (3).

6. The precision machining chuck of claim 1 wherein, The utility model discloses a workpiece clamping device, including base (1), support the workpiece's support plate (2), the clamping plate (3) for clamping workpiece, the moving assembly (4) for driving the clamping plate (3) moves, the limiting frame (5) of setting at the base (1) top and the drive arrangement (6) for driving the moving assembly (4) moves, the support plate (2) installation is at the base (1) top center, the base (1) is installed with two groups symmetry and is placed the drive arrangement (6), and two groups drive end of drive arrangement (6) are connected with moving assembly (4), and two groups moving assembly (4) both ends are slid on two groups limiting frame (5) respectively, and two groups moving assembly (4) are all detachably installed with clamping plate (3).

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