Anti-deviation bidirectional linkage self-centering clamping device for precision machine tool

Abstract

This invention provides a bidirectional linkage self-centering clamping device for precision machine tools, comprising a base plate, a transmission mechanism, and a clamping fixture. The transmission mechanism includes a sliding plate and a thin cylinder. Two sliding plates are symmetrically arranged on the top of the base plate, and a cylinder fixing plate is fixedly connected to one side of the base plate. The thin cylinder is mounted on one side of the cylinder fixing plate. The clamping fixture is symmetrically mounted on the top of the sliding plates. This invention uses a thin cylinder to generate pushing power, which is transmitted to the sliding plates through a connecting plate, causing one of the sliding plates to move along a linear guide rail. The sliding plate drives a rotating plate to rotate via a connecting rod, which in turn causes the other sliding plate to move synchronously via a connecting rod on the other side, achieving precise clamping of the product. This device has a large linkage distance, high linkage accuracy, and strong clamping force, making it particularly suitable as a clamping tool in precision machining equipment to ensure accurate and stable product positioning during machining.

Description

Technical Field

[0001] This utility model relates to a self-centering clamping device, and more particularly to a two-way linkage self-centering clamping device for precision machine tools to prevent deviation, belonging to the field of machine tool processing technology. Background Technology

[0002] Currently, anti-deviation bidirectional linkage self-centering clamping devices are widely used in precision machine tools. These devices play an important role in automated workpiece clamping and precision machining. Although some existing bidirectional linkage clamping devices on the market meet basic clamping requirements to a certain extent, they still have some significant defects. For example, T-type inclined slide self-centering pneumatic or hydraulic clamping cylinders, although simple in structure, cannot meet the high-precision clamping requirements of precision machine tools due to their small bidirectional linkage distance. Secondly, devices that drive racks and pinions through rotating gears have a certain self-centering function, but the linkage accuracy is not high, and the stability of the workpiece cannot be guaranteed during precision machining, making them unsuitable for high-precision clamping tasks. Furthermore, the parallel finger cylinders that are popular on the market have low linkage self-centering accuracy and weak clamping force, which also cannot meet the strict requirements of precision machine tools for precise clamping. The internal transmission components of the clamping device are inconvenient to disassemble and maintain, resulting in insufficient clamping accuracy after the transmission components wear out. These situations indicate that there is still room for improvement in terms of accuracy, force, and linkage distance of the bidirectional linkage self-centering clamping devices currently on the market.

[0003] To address the aforementioned technical issues, a bidirectional linkage self-centering clamping device for preventing deviation in precision machine tools is proposed. Utility Model Content

[0004] In view of this, the present invention provides a bidirectional linkage self-centering clamping device for preventing deviation in precision machine tools, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0005] The technical solution of this utility model is as follows: a bidirectional linkage self-centering clamping device for preventing deviation in precision machine tools, comprising a base plate, a transmission mechanism and a clamping fixture;

[0006] The top of the base plate is fitted with a sleeve, and the top of the sleeve has a hollow groove.

[0007] The transmission mechanism includes a sliding plate and a thin cylinder. The two sliding plates are symmetrically arranged on the top of the base plate. A cylinder fixing plate is fixedly connected to one side of the base plate. The thin cylinder is installed on one side of the cylinder fixing plate. The piston rod of the thin cylinder passes through the cylinder fixing plate and is fixedly connected to a connecting plate. One side of the connecting plate is fixedly connected to the sliding plate. A rotating plate is rotatably installed on the top of the base plate. Two connecting rods are hinged to the top of the rotating plate. The connecting rods are hinged to the sliding plate.

[0008] The clamping fixtures are symmetrically installed on the top of the sliding plate.

[0009] More preferably, the clamping fixture includes a fixed frame and clamping claws. The clamping claws are engaged inside the fixed frame. Two second fixing screws are threaded to one side of the fixed frame. Screw holes are evenly distributed on the top of the sliding plate. The second fixing screws are threaded to the sliding plate through the screw holes.

[0010] More preferably, linear guide rails are symmetrically installed on both sides of the top of the base plate, and sliders are slidably installed on the top of the linear guide rails, with the sliders being fixedly connected to the sliding plate.

[0011] More preferably, the bottom of the fixing frame is integrally formed with a protrusion, the top of the sliding plate is integrally formed with a sliding groove, the protrusion engages with the sliding groove, and the fixing frame is internally threaded with a screw rod that passes through the clamping claw.

[0012] More preferably, the two sides of the housing are each threadedly connected with a first fixing screw at equal intervals, one end of the first fixing screw is threadedly connected to the base plate, a first baffle is fixedly connected to one side of the housing, and a second baffle is fixedly connected to the adjacent sides of the two sliding plates.

[0013] More preferably, a rubber pad is fixedly connected to the bottom of the base plate, and a connection hole is provided at the bottom of the base plate.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] This invention utilizes a thin-walled cylinder to generate propulsion power, which is transmitted to sliding plates via a connecting plate. This causes one of the sliding plates to move along a linear guide rail. The sliding plate, via a connecting rod, drives a rotating plate to rotate, which in turn causes the other sliding plate to move synchronously via another connecting rod. This achieves precise clamping of the product. The clamping fixture is fixed to the sliding plate and acts directly on the product, ensuring a stable and reliable clamping process. When the thin-walled cylinder retracts, this series of components moves in the opposite direction, releasing the product. This device features a large linkage distance, high linkage accuracy, and powerful clamping force, making it particularly suitable as a clamping tool in precision machining equipment. It ensures accurate and stable product positioning during processing. A housing is installed on the top of the base plate, along with a first and second baffle, to protect the internal components, extending their service life. The housing is also removable for easy maintenance of the internal components.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0018] Figure 1 This is a structural diagram of the present invention;

[0019] Figure 2 This is a bottom view of the structure of this utility model;

[0020] Figure 3 This is a structural diagram of the casing in this utility model;

[0021] Figure 4 This is a structural diagram of the clamping fixture in this utility model;

[0022] Figure 5 This is a structural diagram of the sliding plate in this utility model.

[0023] Reference numerals: 11. Base plate; 12. Housing; 13. First baffle; 14. First fixing screw; 15. Rubber pad; 16. Connecting hole; 17. Linear guide rail; 18. Slider; 20. Transmission mechanism; 21. Sliding plate; 22. Cylinder fixing plate; 23. Thin cylinder; 24. Connecting plate; 25. Rotating plate; 26. Connecting rod; 27. Second baffle; 28. Slide groove; 29. ​​Screw hole; 30. Clamping fixture; 31. Fixing frame; 32. Clamping claw; 33. Screw; 34. Second fixing screw; 35. Protrusion. Detailed Implementation

[0024] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0025] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] like Figure 1-5As shown, this utility model embodiment provides a bidirectional linkage self-centering clamping device for precision machine tools to prevent deviation, which consists of a base plate 11, a transmission mechanism 20 and a clamping fixture 30.

[0027] A housing 12 is fitted onto the top of the base plate 11. First fixing screws 14 are threadedly connected to both sides of the housing 12 at equal intervals. One end of the first fixing screw 14 is threaded to the base plate 11, thereby fixing the housing 12 to the top of the base plate 11. The housing 12 protects the transmission components. The housing 12 is integrally formed with two slots for connecting the clamping fixture 30 and the transmission mechanism 20, and also provides displacement space for the clamping fixture 30. A first baffle 13 is fixedly connected to one side of the housing 12, which shields the side of the housing 12. A cylinder fixing plate 22 is fixedly connected to one side of the base plate 11, which is fixedly connected to the side without the first baffle 13.

[0028] In one embodiment, in order to prevent dust from entering the housing 12 and affecting the transmission mechanism 20, a second baffle 27 is fixedly connected to each of the two adjacent sides of the sliding plates 21. The second baffle 27 blocks the empty slot of the housing 12 to prevent dust from entering.

[0029] In one embodiment, to facilitate the installation and fixing of this clamping device, a rubber pad 15 is fixedly connected to the bottom of the base plate 11, and a connection hole 16 is provided on the bottom of the base plate 11, so that the base plate 11 can be installed on the machine tool through the connection hole 16 and the connection bolt.

[0030] The transmission mechanism 20 includes a sliding plate 21 and a thin cylinder 23. Two sets of linear guide rails 17 are symmetrically fixedly connected to the top of the base plate 11. Each set of linear guide rails 17 consists of two rails arranged in parallel. A slider 18 is slidably mounted on the top of each linear guide rail 17. Two sliding plates 21 are symmetrically positioned on the top of the base plate 11, and the sliding plates 21 are fixedly connected to the sliders 18, thus allowing the sliding plates 21 to slide horizontally on the base plate 11. The thin cylinder 23 is mounted on one side of a cylinder fixing plate 22. The piston rod of the thin cylinder 23 passes through the cylinder fixing plate 22 and is fixedly connected to a connecting plate 24. One side of the connecting plate 24 is fixedly connected to the sliding plate 21. The thin cylinder 23 generates pushing power, driving the two sliding plates. One of the sliding plates 21 moves. A rotating plate 25 is rotatably mounted on the top of the base plate 11 via a bearing. The rotating plate 25 is located between the two sliding plates 21, and two connecting rods 26 are hinged to the top of the rotating plate 25. The connecting rods 26 are hinged to the sliding plates 21, so that when one sliding plate 21 moves, the rotating plate 25 is driven to move through the connecting rods 26, so that the rotating plate 25, together with the other connecting rod 26, drives the other sliding plate 21 to move synchronously. The clamping fixture 30 on the top of the sliding plate 21 moves to achieve precise clamping of the product. The structure of the double connecting rods 26 and the rotating plate 25 has a large linkage distance, high linkage accuracy, and strong clamping force, making it suitable for use as a clamping tool in precision machining equipment to ensure that the product position is accurate and stable during the machining process.

[0031] The clamping fixture 30 includes a fixed frame 31 and clamping jaws 32. The clamping jaws 32 are engaged inside the fixed frame 31. A screw 33 is threaded inside the fixed frame 31 and passes through the clamping jaws 32, which facilitates the replacement of the clamping jaws 32 according to the clamping requirements of different workpieces. The clamping jaws 32 directly act on the product, ensuring that the clamping process is both stable and reliable. Two second fixing screws 34 are threaded on one side of the fixed frame 31. Screw holes 29 are evenly distributed on the top of the sliding plate 21. The second fixing screws 34 are threaded to the sliding plate 21 through the screw holes 29, so that the fixed frame 31 can be fixed at different positions on the top of the sliding plate 21 to meet the clamping requirements of different workpieces.

[0032] In one embodiment, to facilitate the installation of the mounting bracket 31, the bottom of the mounting bracket 31 is integrally formed with a protrusion 35, and the top of the sliding plate 21 is integrally formed with a sliding groove 28, with the protrusion 35 engaging with the sliding groove 28.

[0033] In operation, the base plate 11 is installed on the machine tool via bolts and connecting holes 16. Appropriate clamping jaws 32 are selected according to the workpiece clamping requirements. The clamping jaws 32 are inserted into the fixing frame 31, and screws 33 are installed to connect and fix the clamping jaws 32 to the fixing frame 31. The fixing frames 31 are symmetrically arranged on the sliding plate 21, with the bottom protrusions 35 of the fixing frames 31 engaging in the sliding grooves 28. The connection between the fixing frame 31 and the sliding plate 21 is completed using the second fixing screw 34. The workpiece is placed between the two clamping jaws 32. Between 2, the thin cylinder 23 is activated to push the connecting plate 24 to move. The connecting plate 24 drives the sliding plate 21 to move, so that the sliding plate 21 drives the rotating plate 25 to rotate through the connecting rod 26. The rotating plate 25 drives another sliding plate 21 to move synchronously through the connecting rod 26 on the other side, so that the two sliding plates 21 are brought closer together, causing the top clamping claw 32 to clamp the workpiece. When the thin cylinder 23 retracts, it releases the product. During maintenance, the first fixing screw 14 is removed, and the casing 12 is removed to maintain the internal components.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A drift-proof bi-directional linkage self-centering clamping device for precision machine tools, characterized in that: It includes a base plate (11), a transmission mechanism (20), and a clamping fixture (30); The top of the base plate (11) is fitted with a sleeve (12), and the top of the sleeve (12) is provided with a hollow groove; The transmission mechanism (20) includes a sliding plate (21) and a thin cylinder (23). The two sliding plates (21) are symmetrically arranged on the top of the base plate (11). A cylinder fixing plate (22) is fixedly connected to one side of the base plate (11). The thin cylinder (23) is installed on one side of the cylinder fixing plate (22). The piston rod of the thin cylinder (23) passes through the cylinder fixing plate (22) and is fixedly connected to a connecting plate (24). One side of the connecting plate (24) is fixedly connected to the sliding plate (21). A rotating plate (25) is rotatably installed on the top of the base plate (11). Two connecting rods (26) are hinged to the top of the rotating plate (25). The connecting rods (26) are hinged to the sliding plate (21). The clamping fixture (30) is symmetrically installed on the top of the sliding plate (21).

2. The anti-drift bidirectional linkage self-centering clamping device for precision machine tools according to claim 1, characterized in that: The clamping fixture (30) includes a fixed frame (31) and clamping claws (32). The clamping claws (32) are engaged inside the fixed frame (31). Two second fixing screws (34) are threadedly connected to one side of the fixed frame (31). The top of the sliding plate (21) is provided with screw holes (29) distributed at equal intervals. The second fixing screws (34) are threadedly connected to the sliding plate (21) through the screw holes (29).

3. The anti-drift bi-directional linkage self-centering chucking device for precision machine tools according to claim 1, characterized in that: Linear guide rails (17) are symmetrically installed on both sides of the top of the base plate (11). A slider (18) is slidably installed on the top of the linear guide rail (17). The slider (18) is fixedly connected to the sliding plate (21).

4. The anti-drift bi-directional linkage self-centering chucking device for precision machine tools according to claim 2, characterized in that: The bottom of the fixing frame (31) is integrally formed with a protrusion (35), and the top of the sliding plate (21) is integrally formed with a sliding groove (28). The protrusion (35) engages with the sliding groove (28). The fixing frame (31) is internally threaded with a screw (33), and the screw (33) passes through the clamping claw (32).

5. A bidirectional linkage self-centering clamping device for preventing deviation in precision machine tools according to claim 1, characterized in that: Both sides of the casing (12) are threaded with first fixing screws (14) at equal intervals. One end of the first fixing screw (14) is threaded to the base plate (11). A first baffle (13) is fixedly connected to one side of the casing (12). A second baffle (27) is fixedly connected to the adjacent side of the two sliding plates (21).

6. The anti-drift bi-directional linkage self-centering chucking device for precision machine tools according to claim 1, characterized in that: A rubber pad (15) is fixedly connected to the bottom of the base plate (11), and a connection hole (16) is provided at the bottom of the base plate (11).

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