A clamping fixture for workpiece of CNC machine tool

Abstract

The utility model discloses a workpiece clamping fixture for a numerical control machine tool, comprising a supporting platform and a clamping mechanism, wherein a rectangular hole is provided on the supporting platform, a fixing block is arranged on the supporting platform, a limiting column is arranged on the fixing block, and the clamping mechanism comprises an adjusting block, a threaded sleeve is arranged on the adjusting block, a limiting hole is provided on the adjusting block, the limiting hole cooperates with the limiting column, a hole is provided on the adjusting block, a limiting rod cooperates in the hole, a turntable is rotated to drive the driving column to rotate, thereby driving the worm to rotate, thereby driving the gear to rotate, thereby driving the double-headed lead screw to rotate, thereby driving the adjusting block to move toward the middle under the action of the threaded sleeve, thereby achieving a clamping effect, when the volume of the workpiece is large, a plurality of clamping blocks are installed to increase the volume of the clamping device, thereby increasing the clamping contact surface and improving the clamping stability, and when the shape of the workpiece is irregular, different clamping blocks can be replaced to improve the clamping stability.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping fixtures, in particular to a clamping fixture for a workpiece of a numerical control machine tool. Background Art

[0002] CNC machine tools are automated machine tools equipped with program control systems. They integrate mechanical, automation, computer, microelectronics and other technologies to solve the processing problems of complex, precise and small batch parts. They are flexible and efficient automated machine tools. CNC machine tools have strong adaptability to processing objects, high processing accuracy, stable processing quality, high productivity, high reliability, and can improve working conditions. CNC machine tools can make the machine move and process parts according to the pre-programmed program.

[0003] Since the shapes of workpieces processed by today's CNC machine tools are increasing, corresponding fixtures are needed during the processing of the workpieces to facilitate the processing of the workpieces. Due to the different shapes and volumes of the workpieces, different fixtures are required to fix them, and the replacement of fixtures is relatively troublesome. For this reason, this scheme proposes a CNC machine tool workpiece clamping fixture. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art that the shape and volume of a workpiece need to be fixed by a corresponding fixture, and the existing fixture is troublesome to replace, and proposes a clamping fixture for a CNC machine tool workpiece.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A workpiece clamping fixture for a numerically controlled machine tool comprises a support platform and a clamping mechanism, wherein a rectangular hole is formed on the support platform, a fixed block is arranged on the support platform, a limiting column is arranged on the fixed block, the clamping mechanism comprises an adjusting block, a threaded sleeve is arranged on the adjusting block, a limiting hole is formed on the adjusting block, the limiting hole cooperates with the limiting column, a hole is formed on the adjusting block, a limiting rod cooperates in the hole, a first top plate is arranged on the limiting rod, a clamping block is arranged on the first top plate, and a soft pad is arranged on the clamping block.

[0007] Preferably, a tightening mechanism is also included, which includes a fixing plate connected to the support platform, a hole is opened on the fixing plate, a double-headed screw is fitted in the hole, a limiting ring is arranged on the double-headed screw, a gear is arranged at one end of the double-headed screw, and the double-headed screw is threadedly connected to the threaded sleeve.

[0008] Preferably, support legs are provided at the four bottom corners of the support platform.

[0009] Preferably, a driving mechanism is also included, which includes a second top plate, the second top plate is connected to the support platform, a supporting column is arranged on the second top plate, a hole is opened on the supporting column, a driving column is fitted in the hole, a worm is arranged at one end of the driving column, a turntable is arranged at the other end of the driving column, and the worm is meshingly connected with the gear.

[0010] Preferably, a numerical control device is provided on the support platform.

[0011] The utility model has the following beneficial effects:

[0012] By rotating the turntable, the driving column is driven to rotate, which in turn drives the worm to rotate, which drives the gear to rotate, which drives the double-headed screw to rotate, and under the action of the threaded sleeve, the adjusting block is driven to move toward the middle, thereby achieving the clamping effect. When the volume of the workpiece is large, multiple clamping blocks can be installed to increase the volume of the clamping device, thereby increasing the clamping contact surface and improving the clamping stability. When the shape of the workpiece is irregular, different clamping blocks can be replaced to improve the clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the overall structural diagram of the CNC machine tool;

[0014] Figure 2 It is a schematic diagram of the overall structure of the clamping fixture;

[0015] Figure 3 It is a structural schematic diagram of the tightening mechanism of the clamping fixture;

[0016] Figure 4 is a schematic diagram of the structure of the clamping fixture driving mechanism;

[0017] Figure 5 It is a structural schematic diagram of the clamping mechanism of the clamping fixture.

[0018] In the figure: 1. support table; 2. fixed block; 3. limiting column; 4. clamping mechanism; 401. adjusting block; 402. threaded sleeve; 403. limiting hole; 404. limiting rod; 405. first top plate; 406. clamping block; 407. cushion; 5. tightening mechanism; 501. fixed plate; 502. limiting ring; 503. double-headed screw; 504. gear; 6. driving mechanism; 601. second top plate; 602. support column; 603. driving column; 604. worm; 605. turntable; 7. supporting leg; 8. numerical control device. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-4 A clamping fixture for a CNC machine tool workpiece includes a support table 1 and a clamping mechanism 4. A rectangular hole is provided on the support table 1. A fixed block 2 is provided on the support table 1. A limit column 3 is provided on the fixed block 2. The clamping mechanism 4 includes an adjusting block 401. A threaded sleeve 402 is provided on the adjusting block 401. A limit hole 403 is provided on the adjusting block 401. The limit hole 403 cooperates with the limit column 3. A hole is provided on the adjusting block 401. A limit rod 404 is provided in the hole. The limit rod 404 is provided with a A first top plate 405 is provided, and a clamping block 406 is provided on the first top plate 405. The clamping block 406 is provided with a plurality of different shapes so as to be adaptable to various irregular workpieces. A soft pad 407 is provided on the clamping block 406. Firstly, when the volume of the workpiece is large, a plurality of clamping blocks 406 are installed to increase the volume of the clamping device, thereby increasing the clamping contact surface and improving the clamping stability. When the shape of the workpiece is irregular, different clamping blocks 406 can be replaced to improve the clamping stability.

[0021] The tightening mechanism 5 includes a fixing plate 501, which is connected to the support platform 1. A hole is opened on the fixing plate 501, and a double-headed screw rod 503 is matched in the hole. The threads on the double-headed screw rod 503 are arranged oppositely, and a limit ring 502 is arranged on the double-headed screw rod 503. A gear 504 is arranged at one end of the double-headed screw rod 503. The double-headed screw rod 503 is threadedly connected to the threaded sleeve 402. Support legs 7 are arranged at the four corners of the bottom of the support platform 1. The driving mechanism 6 also includes a second top plate 601, which is connected to the support platform 1. A support column 602 is arranged on the second top plate 601, and a support column 602 is opened There is a hole, in which a driving column 603 is fitted, and a protruding block is arranged on the driving column 603. A worm 604 is arranged at the junction of the protruding block and 601. A turntable 605 is arranged at the other end of the driving column 603. The worm 604 is meshed and connected with the gear 504. A numerical control device 8 is arranged on the support platform 1. By rotating the turntable 605, the driving column 603 is driven to rotate, thereby driving the worm 604 to rotate, thereby driving the gear 504 to rotate, thereby driving the double-headed screw 503 to rotate, and under the action of the threaded sleeve 402, the adjusting block 401 is driven to move to the middle, thereby achieving a clamping effect.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A workpiece clamping fixture for a CNC machine tool, comprising a support table (1), characterized in that: The support platform (1) is provided with a rectangular hole, a fixing block (2) is provided on the support platform (1), and a limiting column (3) is provided on the fixing block (2); The invention also comprises a clamping mechanism (4), wherein the clamping mechanism (4) comprises an adjusting block (401), the adjusting block (401) is provided with a threaded sleeve (402), the adjusting block (401) is provided with a limiting hole (403), the limiting hole (403) cooperates with the limiting column (3), the adjusting block (401) is provided with a hole, a limiting rod (404) cooperates in the hole, a first top plate (405) is provided on the limiting rod (404), a clamping block (406) is provided on the first top plate (405), and a soft pad (407) is provided on the clamping block (406).

2. A CNC machine tool workpiece clamping fixture according to claim 1, characterized in that: The invention also comprises a tightening mechanism (5), wherein the tightening mechanism (5) comprises a fixing plate (501), wherein the fixing plate (501) is connected to the support platform (1), wherein a hole is formed on the fixing plate (501), wherein a double-headed screw rod (503) is fitted in the hole, wherein a limit ring (502) is provided on the double-headed screw rod (503), wherein a gear (504) is provided at one end of the double-headed screw rod (503), and wherein the double-headed screw rod (503) is threadedly connected to a threaded sleeve (402).

3. A CNC machine tool workpiece clamping fixture according to claim 1, characterized in that: Support legs (7) are provided at the four corners of the bottom of the support platform (1).

4. A CNC machine tool workpiece clamping fixture according to claim 1, characterized in that: The invention also comprises a driving mechanism (6), wherein the driving mechanism (6) comprises a second top plate (601), wherein the second top plate (601) is connected to the support platform (1), wherein a supporting column (602) is provided on the second top plate (601), wherein a hole is provided on the supporting column (602), wherein a driving column (603) is fitted in the hole, wherein a worm (604) is provided at one end of the driving column (603), and a rotating disk (605) is provided at the other end of the driving column (603), wherein the worm (604) is meshingly connected with the gear (504).

5. The CNC machine tool workpiece clamping fixture according to claim 1, characterized in that: The support platform (1) is provided with a numerical control device (8).

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