Lathe chuck device

Abstract

This application discloses a lathe chuck device, comprising: a lathe chuck device, characterized in that it includes: a chuck body, a first slider, a second slider, a clamping block, and a linkage slider, wherein the chuck body has a through hole at its center, the linkage slider is located within the through hole and is movable along the axis of the chuck body, the first slider has a cavity, and a pull rod piston is provided within the first slider that seals with the cavity, the pull rod piston is fixedly connected to one end of a pull rod B, and a pull rod A is fixedly connected to one side of the second slider, the pull rod A and the pull rod B are fixedly connected by a connecting block. In this application, by providing a cavity and a piston within the first slider, and by fixing the piston to the second slider through multiple connecting rods, the distance between each second slider and the center of the chuck body can be inconsistent during clamping, thereby clamping workpieces with irregular surface shapes.

Description

Technical Field

[0001] This application relates to a chuck, and more particularly to a lathe chuck device. Background Technology

[0002] Lathe chucks are used to clamp workpieces, allowing them to rotate under the lathe's drive. Currently, hydraulic chucks are commonly used on CNC lathes, which can clamp workpieces via hydraulic control. However, existing hydraulic chucks have difficulty clamping workpieces with irregular surface shapes. If the clamping is not stable, vibrations can easily occur during machining, affecting not only the workpiece's machining quality but also significantly impacting the lifespan of the cutting tools used for machining, thus increasing production costs. Further improvements are needed.

[0003] Application content

[0004] In view of the problems existing in the prior art, this application provides a lathe chuck device.

[0005] A lathe chuck device includes: a lathe chuck device, characterized in that it includes: a chuck body, a first slider, a second slider, a clamping block, and a linkage slider, wherein the chuck body has a through hole at its center, the linkage slider is located in the through hole, and the linkage slider is movable along the axis of the chuck body; multiple first sliders are provided, the first slider is movable along the radial direction of the chuck body, and the linkage slider cooperates with the first slider such that when the linkage slider moves along the axis of the chuck body, the first slider moves along the radial direction of the chuck body;

[0006] The second slider corresponds one-to-one with the first slider. The first slider has a cavity and a pull rod piston that seals with the cavity. The pull rod piston is fixedly connected to one end of the pull rod B. A pull rod A is fixedly connected to one side of the second slider. The pull rod A and the pull rod B are fixedly connected by a connecting block.

[0007] Furthermore, a pressure chamber is provided at the center of the chuck body, and the pressure chamber is connected to the pull rod piston through a flow channel located inside the chuck body.

[0008] Furthermore, a main piston is provided inside the pressure chamber.

[0009] Furthermore, the linkage slider is located above the main piston, and a positioning hole is provided in the linkage slider along its axial direction. The cross-section of the positioning hole is triangular, and a limit block that can move linearly is provided in the positioning hole. An adjusting screw is provided inside the limit block, and the limit block and the adjusting screw are threadedly connected. The adjusting screw is connected to the main piston through a connecting rod, and after the adjusting screw is connected to the main piston through the connecting rod, the adjusting screw can rotate.

[0010] Furthermore, a cover B is installed at the bottom of the chuck body, and an elastic element is provided between the cover B and the main piston.

[0011] Furthermore, the linkage slider includes a cylindrical part, a wedge mating groove B, and a wedge B. The cylindrical part and the wedge B are integrated. The wedge B is provided with multiple wedge mating grooves B, and the number of wedge mating grooves B is the same as the number of the first slider.

[0012] Furthermore, the first slider includes a slide rod, a wedge A, and a wedge mating groove A. The wedge A is located at one end of the slide rod, and the wedge A is provided with a wedge mating groove A. The wedge A and the wedge B are connected by the wedge mating groove B and the wedge mating groove A.

[0013] Furthermore, the bottom of the first slider is provided with an air hole, which is elongated and can cover the opening of the flow channel no matter how the first slider moves within its rated range. A sealing groove is provided around the air hole.

[0014] Furthermore, a chuck is mounted on one end of the clamping block facing the axis of the chuck body. The chuck is rotatable, and the end of the chuck facing the axis of the chuck body has a recess.

[0015] Furthermore, the chuck body has a cover A on its top, a through hole in the center of the cover A, and a positioning post with the same cross-section as the positioning hole at its bottom.

[0016] The technical effects and advantages of this application are as follows:

[0017] In this application, by setting a cavity and a piston in the first slider, and fixing the piston to the second slider through multiple connecting rods, the distance between each second slider and the center of the chuck body can be inconsistent during clamping, thereby clamping workpieces with irregular surface shapes, improving the reliability and stability of workpiece clamping, improving workpiece machining quality, reducing the impact on cutting tools, and increasing the service life of cutting tools.

[0018] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0019] Figure 1 A schematic diagram of a lathe chuck device is shown.

[0020] Figure 2 A schematic diagram of the internal structure of a lathe chuck device is shown.

[0021] Figure 3A cross-sectional view of a lathe chuck assembly is shown;

[0022] Figure 4 A schematic diagram of the linkage slider in a lathe chuck device is shown;

[0023] Figure 5 A schematic diagram of the structure of the first slider in a lathe chuck device is shown;

[0024] Figure 6 A schematic diagram of the connection structure between the adjusting screw and the main piston in a lathe chuck device is shown.

[0025] In the diagram: 1-Chuck body, 2-First slider, 3-Second slider, 4-Pull rod A, 5-Connecting block, 6-Pull rod B, 7-Clamping block, 8-Chuck, 9-Cap A, 10-Linking slider, 11-Pull rod piston, 12-Adjusting screw, 13-Connecting rod, 14-Main piston, 15-Elastic element, 16-Cap B, 17-Limiting block, 18-Flow channel, 19-Pressure chamber, 21-Slide rod, 22-Air hole, 23-Sealing groove, 24-Wedge A, 25-Wedge mating groove A, 101-Cylindrical part, 102-Positioning hole, 103-Wedge mating groove B, 104-Wedge B. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Furthermore, in the application, the terms "first," "second," and other similar words are not intended to imply any order, quantity, or importance, but are merely used to distinguish different elements, and the terms "upper," "lower," "left," "right," and other similar words are merely positional relationships in the accompanying drawings.

[0028] like Figure 1As shown in the figure, this application provides a lathe chuck device, including: a chuck body 1, a first slider 2, a second slider 3, a clamping block 7, and a linkage slider 10. The chuck body 1 has a through hole at its center, and the linkage slider 10 is located within the through hole and is movable along the axis of the chuck body 1. Multiple first sliders 2 are provided, and each first slider 2 is movable radially along the chuck body 1. The multiple first sliders 2 are equidistantly distributed along the circumference of the chuck body 1's axis. The number of second sliders 3 is the same as that of the first sliders 2, and each second slider 3 corresponds one-to-one with a first slider 2. Each first slider 2 has a cavity, and a sealing element is provided within the first slider 2 to seal the cavity. A connecting rod piston 11 is fixedly connected to one end of a connecting rod B6. A connecting rod A4 is fixedly connected to one side of the second slider 3. The connecting rod A4 and the connecting rod B6 are fixedly connected by a connecting block 5. A pressure chamber 19 is provided along the axis of the chuck body 1. The pressure chamber 19 is connected to the connecting rod piston 11 through a flow channel 18 located inside the chuck body 1. Thus, when the fluid pressure in the pressure chamber 19 changes, the pressure in the cavity inside the first slider 2 changes accordingly. This causes the positions of the connecting rods A4 and B6 to change, thereby changing the position of the second slider 3. In other words, the second slider 3 can be displaced by controlling the pressure in the pressure chamber 19. On the other hand, in this embodiment, there are three first sliders 2 and three second sliders 3. Since the cavity inside each first slider 2 is connected to the pressure chamber 19, the cavities inside the three first sliders 2 are interconnected. In this way, when the chuck clamps the workpiece, the distances of the three second sliders 3 from the center of the chuck body 1 can be different. Thus, non-cylindrical workpieces can be clamped by the three second sliders 3, and the pressure between the three second sliders 3 and the workpiece is equal.

[0029] On the other hand, such as Figure 3 As shown, a main piston 14 is provided in the pressure chamber 19. When the three second sliders 3 clamp the workpiece, the second sliders 3 cannot continue to move. At this time, if the pressure in the pressure chamber 19 is reduced, the main piston 14 will move downward. When the main piston 14 moves to a certain distance, the main piston 14 will block the flow channel 18, causing the cavity inside the first slider 2 to separate from the pressure chamber 19. In this way, the pressure inside the three first sliders 2 can be kept stable, thereby keeping the second slider 3 and the first slider 2 relatively stationary.

[0030] like Figure 3 and Figure 6As shown, the linkage slider 10 is located above the main piston 14, and a positioning hole 102 is provided in the linkage slider 10 along its axial direction. The cross-section of the positioning hole 102 is triangular. A linearly movable limiting block 17 is provided in the positioning hole 102. An adjusting screw 12 is provided inside the limiting block 17, and the limiting block 17 is threadedly connected to the adjusting screw 12. The adjusting screw 12 is connected to the main piston 14 through a connecting rod 13. After the adjusting screw 12 is connected to the main piston 14 through the connecting rod 13, the adjusting screw 12 can rotate. In this way, when the main piston 14 moves, it will also drive the limiting block 17 to move. When the limiting block 17 moves to contact the bottom of the linkage slider 10, the main piston 14 will drive the linkage slider 10 to move downward.

[0031] On the other hand, the distance between the limit block 17 and the main piston 14 can be adjusted by rotating the adjusting screw 12, thereby realizing the function of "the linkage slider 10 can only be moved when the main piston 14 moves to a certain fixed position", thus adjusting the working mode of the chuck.

[0032] In one embodiment of this application, a cover B16 is installed at the bottom of the chuck body 1, and an elastic element 15 is provided between the cover B16 and the main piston 14. In this way, when the pressure inside the pressure chamber 19 approaches atmospheric pressure, the position of the main piston 14 is at the top of the pressure chamber 19, thereby realizing the reset function.

[0033] like Figure 4 As shown, the linkage slider 10 includes a cylindrical part 101, a wedge mating groove B103, and a wedge B104. The cylindrical part 101 and the wedge B104 are integrated. The wedge B104 is provided with a plurality of wedge mating grooves B103. The number of wedge mating grooves B103 is the same as the number of the first slider 2.

[0034] like Figure 5 As shown, the first slider 2 includes a slide rod 21, a wedge A24, and a wedge mating groove A25. The wedge A24 is located at one end of the slide rod 21, and the wedge A24 has a wedge mating groove A25. The wedge A24 and the wedge B104 are connected by a wedge mating groove B103 and a wedge mating groove A25, so that when the linkage slider 10 moves axially, the first slider 2 will move radially along the chuck body 1. Therefore, when the linkage slider 10 moves downward with the main piston 14, the first slider 2 will move towards the axis of the chuck body 1, thereby increasing the pressure between the second slider 3 and the workpiece.

[0035] like Figure 5 As shown, an air hole 22 is provided at the bottom of the first slider 2. The air hole 22 is elongated and can cover the opening of the flow channel 18 no matter how the first slider 2 moves within its rated range. A sealing groove 23 is provided around the air hole 22.

[0036] like Figure 2 As shown, in one embodiment of this application, a chuck 8 is installed on one end of the clamping block 7 facing the axis of the chuck body 1. The chuck 8 is rotatable, and the end of the chuck 8 facing the axis of the chuck body 1 is provided with a recess. In this way, the clamping block 7 can clamp the workpiece more firmly when clamping workpieces with irregular surfaces.

[0037] like Figure 1 As shown, in one embodiment of this application, the top of the chuck body 1 is provided with a cover A9, the center of the cover A9 is provided with a through hole, and the bottom of the cover A9 is provided with a positioning post with the same cross-section as the positioning hole 102.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lathe chuck device, characterized in that, include: The chuck body (1), first slider (2), second slider (3), clamping block (7), and linkage slider (10) are provided. The chuck body (1) has a through hole at its center, and the linkage slider (10) is located within the through hole and can move along the axis of the chuck body (1). Multiple first sliders (2) are provided, and each first slider (2) can move radially along the chuck body (1). The linkage slider (10) cooperates with the first slider (2) such that when the linkage slider (10) moves along the axis of the chuck body (1), the first slider (2) moves radially along the chuck body (1). When the axis of the main body (1) moves, the first slider (2) moves radially along the chuck body (1); the second slider (3) corresponds one-to-one with the first slider (2), the first slider (2) is provided with a cavity, and the first slider (2) is provided with a pull rod piston (11) that seals with the cavity. The pull rod piston (11) is fixedly connected to one end of the pull rod B (6), and a pull rod A (4) is fixedly connected to one side of the second slider (3). The pull rod A (4) and the pull rod B (6) are fixedly connected through the connecting block (5); The chuck body (1) has a pressure chamber (19) at its center. The pressure chamber (19) is connected to the pull rod piston (11) through a flow channel (18), which is located inside the chuck body (1). The pressure chamber (19) is equipped with a main piston (14). The linkage slider (10) is located above the main piston (14). The linkage slider (10) has a positioning hole (102) along its axial direction. The cross-section of the positioning hole (102) is triangular. A linearly movable limiting block (17) is provided in the positioning hole (102). An adjusting screw (12) is provided inside the limiting block (17). The limiting block (17) is threadedly connected to the adjusting screw (12). The adjusting screw (12) is connected to the main piston (14) through a connecting rod (13). After the adjusting screw (12) is connected to the main piston (14) through the connecting rod (13), the adjusting screw (12) can rotate.

2. The lathe chuck device according to claim 1, characterized in that, The bottom of the chuck body (1) is fitted with a cover B (16), and an elastic element (15) is provided between the cover B (16) and the main piston (14).

3. A lathe chuck device according to claim 1, characterized in that, The linkage slider (10) includes a cylindrical part (101), a wedge mating groove B (103), and a wedge B (104). The cylindrical part (101) and the wedge B (104) are integrated. The wedge B (104) is provided with multiple wedge mating grooves B (103). The number of wedge mating grooves B (103) is the same as the number of the first slider (2).

4. A lathe chuck device according to claim 1, characterized in that, The first slider (2) includes a slide rod (21), a wedge A (24), and a wedge mating groove A (25). The wedge A (24) is located at one end of the slide rod (21), and the wedge A (24) is provided with a wedge mating groove A (25). The wedge A (24) and the wedge B (104) are connected by the wedge mating groove B (103) and the wedge mating groove A (25).

5. A lathe chuck device according to claim 1, characterized in that, The bottom of the first slider (2) is provided with an air hole (22). The air hole (22) is elongated. No matter how the first slider (2) moves within its rated range, the air hole (22) can cover the opening of the flow channel (18). A sealing groove (23) is provided around the air hole (22).

6. A lathe chuck device according to claim 1, characterized in that, The clamping block (7) has a chuck (8) installed on one end facing the axis of the chuck body (1). The chuck (8) is rotatable and has a recess on one end facing the axis of the chuck body (1).

7. A lathe chuck device according to claim 3, characterized in that, The chuck body (1) has a cover A (9) on the top, a through hole in the center of the cover A (9), and a positioning post with the same cross section as the positioning hole (102) at the bottom of the cover A (9).

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