Numerical control index plate for workpiece machining

Abstract

The utility model discloses a numerical control index plate for workpiece machining, and relates to the technical field of index plates, the numerical control index plate comprises a base and a chuck rotationally arranged on the base, a rotating shaft is coaxially and fixedly arranged on the chuck, a worm gear and a worm are rotationally arranged on the base, the worm gear is meshed with the worm, and the worm gear is meshed with the worm. The base is provided with a driving source used for driving the worm to rotate, the worm gear and the rotating shaft are coaxial, the rotating shaft is provided with a fixing mechanism used for fixing the worm gear, the rotating shaft is sleeved with a reset spring, one end of the reset spring is fixedly connected with the chuck, and the other end of the reset spring is fixedly connected with the base. A positioning assembly used for positioning the chuck is arranged on the base. The indexing plate has the effect that the chuck of the indexing plate can be reset conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of indexing plates, and in particular to a numerically controlled indexing plate for workpiece processing. Background Art

[0002] The CNC indexing plate is a machine tool accessory that clamps the workpiece on a chuck or between two centers and enables it to rotate, index and position. It is widely used in automated equipment such as milling machines, drilling machines, and surface grinders.

[0003] At present, during the processing of heat sinks, multiple processing positions are usually determined on the heat sink, and the processing position of the heat sink workpiece is constantly adjusted during the processing, so a dividing plate is often used. However, the existing dividing plate usually drives the chuck to rotate through a worm gear, fixes the workpiece to be processed on the chuck through the clamping tool on the chuck, and then adjusts the angle of the workpiece when processing the workpiece. Although the use of the worm gear structure increases the stability of the workpiece during processing, after the workpiece is processed, the chuck needs to be reset by rotating the worm gear, which is very inconvenient when resetting the chuck. Utility Model Content

[0004] In order to facilitate resetting of a chuck of a dividing plate, the present application provides a CNC dividing plate for workpiece processing.

[0005] The present application provides a CNC indexing plate for workpiece processing, which adopts the following technical solution:

[0006] A CNC dividing plate for workpiece processing comprises a base and a chuck rotatably arranged on the base, a rotating shaft is coaxially fixed on the chuck, a worm wheel and a worm are rotatably arranged on the base, the worm wheel is meshed with the worm, a driving source for driving the worm to rotate is arranged on the base, the worm wheel is coaxial with the rotating shaft, and a fixing mechanism for fixing the worm wheel is arranged on the rotating shaft, a reset spring is sleeved on the rotating shaft, one end of the reset spring is fixedly connected to the chuck, and the other end of the reset spring is fixedly connected to the base, and a positioning component for positioning the chuck is arranged on the base.

[0007] Optionally, the fixing mechanism includes a top block and a driving assembly, a mounting groove is provided on the worm wheel along the axial direction of the worm wheel, one end of the rotating shaft is rotatably inserted into the mounting groove, a accommodating groove is provided on the side wall of the rotating shaft, the top block is slidably arranged in the accommodating groove, and the top block is used to abut the side wall of the mounting groove, and the driving assembly is used to drive the top block to slide.

[0008] Optionally, the driving assembly includes an elastic member, a driving block and a driving member, the elastic member is used to drive the top block to slide toward the direction close to the rotating shaft, the side wall of the accommodating groove is provided with a sliding groove along the axial direction of the rotating shaft, the driving block is slidably arranged in the sliding groove, and a guiding slope is provided at the end of the driving block close to the top block, the guiding slope is used to abut the top block and drive the top block to slide toward away from the rotating shaft, and the driving member is used to drive the driving block to slide.

[0009] Optionally, the driving member includes a limiting screw, which is rotatably installed on the chuck, and the axial direction of the limiting screw is parallel to the sliding direction of the driving block, and one end of the limiting screw extends into the sliding groove and cooperates with the driving block thread.

[0010] Optionally, the rotating shaft is clearance-matched with the side wall of the mounting groove.

[0011] Optionally, an end of the top block away from the rotating shaft is provided with anti-slip grooves.

[0012] Optionally, the positioning assembly includes a first positioning block and a second positioning block, the first positioning block is fixedly disposed on the chuck, a positioning groove is opened on the base along the circumference of the chuck, the first positioning block is slidably disposed in the positioning groove, and the second positioning block is fixedly disposed in the positioning groove.

[0013] Optionally, a dial is fixedly disposed on the base, and an indicator mark is disposed on the chuck.

[0014] In summary, this application has the following beneficial technical effects:

[0015] 1. The present application sets the rotating shaft and the worm wheel of the chuck independently. During the processing of the workpiece, the rotating shaft and the worm wheel are fixed by a fixing mechanism, the worm is driven to rotate by a driving source, driving the worm wheel to rotate, and then the rotating shaft is driven by the worm wheel to rotate, so as to adjust the angle of the workpiece and ensure the stability of the workpiece during processing. When the workpiece is processed, the workpiece is removed from the chuck, and the rotating shaft and the worm wheel are separated by loosening the fixing mechanism. At this time, the chuck is reset under the elastic force of the reset spring, and the chuck is positioned by the positioning assembly, thereby greatly improving the convenience of resetting the chuck of the dividing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0017] Figure 2 It is a cross-sectional view of the structure of the base used to express the embodiment of the present application;

[0018] Figure 3 is a cross-sectional view of the overall structure of an embodiment of the present application;

[0019] Figure 4 yes Figure 3 Magnified view of section A.

[0020] Explanation of the accompanying drawings: 1. base; 11. dial; 12. inner cavity; 13. second positioning block; 14. positioning groove; 15. worm gear; 151. mounting groove; 16. worm; 17. driving source; 2. chuck; 21. indicator mark; 22. rotating shaft; 221. top block; 222. accommodating groove; 223. limiting block; 224. limiting groove; 225. elastic member; 226. driving block; 227. slide groove; 228. limiting screw; 229. through hole; 23. reset spring; 24. first positioning block. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-4 This application is described in further detail.

[0022] The embodiment of the present application discloses a CNC indexing plate for workpiece processing. Figure 1 , including a base 1 and a chuck 2 rotatably arranged on the base 1, the chuck 2 is provided with a clamping tool for clamping a workpiece, a dial 11 is fixedly arranged on the base 1, the central axis of the dial 11 coincides with the central axis of the chuck 2, and an indicator mark 21 is arranged on the chuck 2, and the indicator mark 21 is used to indicate the scale on the dial 11.

[0023] Reference Figure 1 , 2 An inner cavity 12 is provided inside the base 1, and a rotating shaft 22 is coaxially fixedly provided on the chuck 2. One end of the rotating shaft 22 extends into the inner cavity 12 of the base 1. A return spring 23 is sleeved on the rotating shaft 22. One end of the return spring 23 is fixedly connected to the chuck 2, and the other end of the return spring 23 is fixedly connected to the base 1.

[0024] Reference Figure 2 A positioning assembly for positioning the chuck 2 is provided on the base 1, and the positioning assembly includes a first positioning block 24 and a second positioning block 13. The first positioning block 24 is fixedly arranged on the end face of the chuck 2 close to the base 1, and a positioning groove 14 is opened along the circumference of the chuck 2 at one end of the base 1 close to the chuck 2. The first positioning block 24 is slidably penetrated in the positioning groove 14, and the second positioning block 13 is fixedly arranged in the positioning groove 14. When the first positioning block 24 abuts against the second positioning block 13 under the elastic force of the reset spring 23, the chuck 2 is reset to the original position.

[0025] Reference Figure 2A worm wheel 15 and a worm 16 are rotatably arranged in the inner cavity 12 of the base 1, and the worm wheel 15 is meshed with the worm 16. A driving source 17 for driving the worm 16 to rotate is arranged on the base 1, and the driving source 17 includes a servo motor, which is fixedly arranged in the inner cavity 12 of the base 1, and the output shaft of the servo motor is coaxially fixedly connected with the worm 16. The central axis of the worm wheel 15 coincides with the central axis of the rotating shaft 22, and an installation groove 151 is opened at one end of the worm wheel 15 close to the rotating shaft 22 along the central axis direction of the worm wheel 15, and the end of the rotating shaft 22 away from the chuck 2 is rotatably penetrated in the installation groove 151, and the rotating shaft 22 is matched with the side wall clearance of the installation groove 151.

[0026] Reference Figure 4 A fixing mechanism for fixing the worm gear 15 is provided on the rotating shaft 22, and the fixing mechanism includes a top block 221 and a driving assembly. A receiving groove 222 is provided on the side wall of the rotating shaft 22, and the top block 221 is slidably arranged in the receiving groove 222 along a direction perpendicular to the central axis of the rotating shaft 22. A limiting block 223 is fixedly arranged on the side wall of the top block 221, and a limiting groove 224 is provided on the side wall of the receiving groove 222 along the sliding direction of the top block 221. The limiting block 223 is slidably arranged in the limiting groove 224, and an end of the top block 221 away from the rotating shaft 22 is provided with an anti-slip pattern.

[0027] Reference Figure 4 The driving assembly includes an elastic member 225, a driving block 226 and a driving member. The elastic member 225 includes a compression spring, which is arranged in the limiting groove 224. One end of the compression spring abuts against the side wall of the limiting groove 224 away from the rotating shaft 22, and the other end of the compression spring abuts against the limiting block 223. A sliding groove 227 is provided on the side wall of the containing groove 222 along the axial direction of the rotating shaft 22. The driving block 226 is slidably arranged in the sliding groove 227. A guiding inclined surface is provided at the end of the driving block 226 close to the top block 221, and a matching inclined surface is provided at the end of the top block 221 close to the bottom wall of the containing groove 222. The driving block 2 The guiding bevel of 26 abuts against the matching bevel of the top block 221; when the driving block 226 slides in the direction approaching the top block 221, the guiding bevel on the driving block 226 and the matching bevel on the top block 221 slide against each other, and drive the top block 221 to slide in the direction away from the rotating shaft 22, and then abut against the side wall of the mounting groove 151, preventing the rotating shaft 22 and the worm gear 15 from rotating relative to each other; when the driving block 226 slides in the direction away from the top block 221, the top block 221 slides into the inside of the accommodating groove 222 under the elastic force of the compression spring, and then separates from the side wall of the mounting groove 151.

[0028] Reference Figure 3The driving member includes a limiting screw 228. A through hole 229 connected to the slide groove 227 is opened on the rotating shaft 22 along the axial direction of the rotating shaft 22. The limiting screw 228 is rotatably penetrated in the through hole 229, and the axial direction of the limiting screw 228 is parallel to the sliding direction of the driving block 226. One end of the limiting screw 228 extends into the slide groove 227 and is threadedly matched with the driving block 226. By rotating the limiting screw 228, the driving block 226 can be driven to slide in the slide groove 227. When the limiting screw 228 stops rotating, the driving block 226 can be limited.

[0029] The implementation principle of a CNC indexing plate for workpiece processing in the embodiment of the present application is as follows: the rotating shaft 22 of the chuck 2 and the worm wheel 15 are independently arranged. When the workpiece is processed, the limit screw 228 is rotated to drive the driving block 226 to slide, and the top block 221 is pressed against the side wall of the installation groove 151, thereby fixing the rotating shaft 22 and the worm wheel 15. Then, the workpiece is fixed on the chuck 2 by the clamping tool on the chuck 2. During the processing of the workpiece, the servo motor drives the worm 16 to rotate, driving the worm wheel 15 to rotate, and then The rotating shaft 22 is driven to rotate by the worm gear 15 to adjust the angle of the workpiece and ensure the stability of the workpiece during processing. When the workpiece is processed, the workpiece is removed from the chuck 2, and the limit screw 228 is rotated again to separate the top block 221 from the side wall of the mounting groove 151. At this time, the chuck 2 is reset under the elastic force of the reset spring 23, and the chuck 2 is positioned by the first positioning block 24 and the second positioning block 13, thereby greatly improving the convenience of the chuck 2 of the dividing plate when resetting.

[0030] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A numerically controlled indexing plate for workpiece processing, comprising a base (1) and a chuck (2) rotatably arranged on the base (1), characterized in that: A rotating shaft (22) is coaxially fixedly arranged on the chuck (2), a worm wheel (15) and a worm (16) are rotatably arranged on the base (1), the worm wheel (15) meshing with the worm (16), a driving source (17) for driving the worm (16) to rotate is arranged on the base (1), the worm wheel (15) is coaxial with the rotating shaft (22), and a fixing mechanism for fixing the worm wheel (15) is arranged on the rotating shaft (22), a reset spring (23) is sleeved on the rotating shaft (22), one end of the reset spring (23) is fixedly connected to the chuck (2), and the other end of the reset spring (23) is fixedly connected to the base (1), and a positioning component for positioning the chuck (2) is arranged on the base (1).

2. A CNC indexing plate for workpiece processing according to claim 1, characterized in that: The fixing mechanism comprises a top block (221) and a driving assembly, a mounting groove (151) is provided on the worm wheel (15) along the axial direction of the worm wheel (15), one end of the rotating shaft (22) is rotatably inserted into the mounting groove (151), a side wall of the rotating shaft (22) is provided with a receiving groove (222), the top block (221) is slidably arranged in the receiving groove (222), and the top block (221) is used to abut against the side wall of the mounting groove (151), and the driving assembly is used to drive the top block (221) to slide.

3. A CNC indexing plate for workpiece processing according to claim 2, characterized in that: The driving assembly comprises an elastic member (225), a driving block (226) and a driving member, wherein the elastic member (225) is used to drive the top block (221) to slide in a direction close to the rotating shaft (22), a sliding groove (227) is provided on the side wall of the accommodating groove (222) along the axial direction of the rotating shaft (22), and the driving block (226) is slidably arranged in the sliding groove (227), and a guiding inclined surface is provided at the end of the driving block (226) close to the top block (221), and the guiding inclined surface is used to abut against the top block (221) and drive the top block (221) to slide in a direction away from the rotating shaft (22), and the driving member is used to drive the driving block (226) to slide.

4. A CNC indexing plate for workpiece processing according to claim 3, characterized in that: The driving member comprises a limiting screw (228), which is rotatably inserted into the chuck (2), and the axial direction of the limiting screw (228) is parallel to the sliding direction of the driving block (226), and one end of the limiting screw (228) extends into the sliding groove (227) and is threadedly matched with the driving block (226).

5. The CNC indexing plate for workpiece processing according to claim 2, characterized in that: The rotating shaft (22) is clearance-matched with the side wall of the installation groove (151).

6. The CNC indexing plate for workpiece processing according to claim 2, characterized in that: An end of the top block (221) away from the rotating shaft (22) is provided with anti-slip grooves.

7. The CNC indexing plate for workpiece processing according to claim 1, characterized in that: The positioning assembly comprises a first positioning block (24) and a second positioning block (13); the first positioning block (24) is fixedly arranged on the chuck (2); a positioning groove (14) is provided on the base (1) along the circumference of the chuck (2); the first positioning block (24) is slidably arranged in the positioning groove (14); and the second positioning block (13) is fixedly arranged in the positioning groove (14).

8. The CNC indexing plate for workpiece processing according to claim 1, characterized in that: A scale plate (11) is fixedly arranged on the base (1), and an indicator mark (21) is arranged on the chuck (2).

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