Method for using indexing turntable with built-in rotating axis

Abstract

The present invention discloses a graduated turntable with a built-in rotating shaft and a method for using the same, comprising a turntable body and a No. 1 motor driving the body to rotate, a locking nut, a rotating shaft and a permanent magnet motor for driving the rotating shaft to rotate, a mounting cavity and a through hole are arranged in the turntable body, the axis center line of the through hole coincides with the axis center line of the turntable body, a sleeve is arranged in the through hole, a No. 1 bearing is arranged at the upper end of the sleeve, a No. 2 bearing is arranged at the lower end of the sleeve, the rotating sleeve is arranged in the No. 1 bearing and the No. 2 bearing, the permanent magnet motor comprises a base, a stator and a rotor, the base is arranged in the mounting cavity, the stator is arranged in the sleeve, the rotor is fixedly connected to the rotating shaft, the inner ring of the No. 2 bearing is fixedly connected to the rotating shaft through a locking nut, and a chuck is detachably arranged at the upper end of the rotating shaft. Advantages: saving the time for reinstalling the workpiece to be processed, while avoiding installation errors caused by installing the workpiece on different processing equipment, and being able to effectively improve processing accuracy and work efficiency.

Description

Technical Field

[0001] The invention relates to the field of indexing turntable equipment, in particular to an indexing turntable with a built-in rotating shaft and a use method thereof. Background Art

[0002] Indexing turntables are widely used in metal cutting machine tools. Indexing turntables are mainly used for indexing processing. However, in real applications, especially with the application of compound machine tools, traditional indexing turntables can no longer meet the needs of compound machine tools. For example, in metal processing parts that need to be milled, turned, ground, etc., the traditional indexing turntable only includes the turntable body and the motor that drives the turntable body to rotate. When in use, the workpiece to be processed is installed on the turntable body, and the indexing rotation of the turntable body drives the workpiece to be processed to complete the indexing milling process. Due to the slow rotation speed of the turntable, the workpiece to be processed after indexing milling needs to be removed from the indexing turntable and reinstalled on another turning or grinding rotating tooling, which not only takes time and reduces work efficiency, but also reinstallation will cause the workpiece to be processed to easily deviate, resulting in reduced turning or grinding accuracy.

[0003] In view of this, it is necessary to provide a dividing turntable with a built-in rotating axis and a method for using the same. Summary of the invention

[0004] The present invention provides a dividing turntable with a built-in rotating shaft and a method of using the same, which effectively solves the problem of reduced precision and efficiency caused by the need to replace clamps when switching between milling, turning, grinding and other processes when machining workpieces on existing dividing turntables.

[0005] The technical solution adopted by the present invention is: a dividing turntable with a built-in rotating shaft, comprising a turntable body and a No. 1 motor that drives the turntable body to rotate, and also comprising a locking nut, a rotating shaft and a permanent magnet motor for driving the rotating shaft to rotate. The turntable body is provided with an installation cavity and a through hole, the axis center line of the through hole coincides with the axis center line of the turntable body, a sleeve is provided in the through hole, a No. 1 bearing is provided at the upper end of the sleeve, a No. 2 bearing is provided at the lower end of the sleeve, the rotating sleeve is arranged in the No. 1 bearing and the No. 2 bearing, the permanent magnet motor comprises a base, a stator and a rotor, the base is arranged in the installation cavity, the stator is arranged in the sleeve, the rotor is fixedly connected to the rotating shaft, the inner ring of the No. 2 bearing is fixedly connected to the rotating shaft by a locking nut, and a chuck is detachably provided at the upper end of the rotating shaft.

[0006] Furthermore, a center positioning bearing is also arranged in the through hole, the shaft sleeve is sleeved in the center positioning shaft sleeve, and the upper end of the shaft sleeve is fixedly connected to the turntable body by threads.

[0007] Furthermore, a plurality of grooves are arranged on the upper end surface of the turntable body.

[0008] Furthermore, a placement groove is arranged on the upper end surface of the indexing turntable body, and the chuck is arranged on the placement groove.

[0009] Furthermore, a cover plate is provided at the lower end of the through hole.

[0010] A method for using a dividing turntable with a built-in rotating axis comprises the following steps:

[0011] S1. The machine tool cutter is a milling cutter. The workpiece to be processed is installed on the chuck. The excitation value of the permanent magnet motor is set so that the permanent magnet motor generates a torque force to overcome the rotation of the rotating shaft relative to the turntable body. Then the No. 1 motor works to drive the turntable body to drive the rotating shaft to rotate synchronously, and the workpiece is subjected to indexing milling.

[0012] S2, the machine tool tool is changed into a turning tool, the No. 1 motor stops working, and after the stator of the permanent magnet motor is energized, the rotor drives the rotating shaft to rotate in the No. 1 bearing and the No. 2 bearing at high speed, so that the chuck fixedly connected to the rotating shaft drives the workpiece to rotate synchronously with the rotating shaft, and the workpiece is turned by the turning tool.

[0013] S3. The machine tool cutter is changed into a grinding wheel, and the No. 1 motor stops working. After the stator of the permanent magnet motor is energized, the rotor drives the rotating shaft at high speed in the No. 1 bearing and the No. 2 bearing to rotate in the opposite direction of the turning process, so that the chuck fixedly connected to the rotating shaft drives the workpiece to rotate synchronously with the rotating shaft, and the grinding wheel is used to perform abrasive processing on the workpiece.

[0014] The beneficial effects of the invention: By installing a permanent magnet motor with a built-in rotating shaft on the indexing turntable that has driven the rotating shaft to rotate, the workpiece to be processed installed on the chuck can be indexed and milled when the rotating shaft is fixed and the turntable body is rotating. When the workpiece to be processed needs to be turned or abraded, it is not necessary to disassemble the workpiece from the chuck and reinstall it. The workpiece to be processed can be directly rotated with the turntable body fixed and the rotating shaft working to complete the turning or abrasive processing. This saves the time of reinstalling the workpiece to be processed after indexing and milling, and avoids installation errors caused by installing the workpiece on different processing equipment, which can effectively improve processing accuracy and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A top view of an indexing turntable with a built-in rotating axis provided in an embodiment of the present application.

[0016] Figure 2 An overall schematic diagram of a dividing turntable with a built-in rotating axis provided in an embodiment of the present application.

[0017] Figure 3 For along Figure 2 Sectional view of AA.

[0018] The markings in the figure are: 1. turntable body; 2. locking nut; 3. rotating shaft; 5. permanent magnet motor; 6. bushing; 7. bearing No. 1; 8. bearing No. 2; 51. stator; 52. rotor; 9. chuck; 10. center positioning bearing; 101. groove; 102. placement slot; 11. cover plate. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, an indexing turntable with a built-in rotating shaft 3 provided in an embodiment of the present application comprises a turntable body 1 and a No. 1 motor driving the turntable body 1 to rotate, and also comprises a locking nut 2, a rotating shaft 3 and a permanent magnet motor 5 for driving the rotating shaft 3 to rotate. The turntable body 1 is provided with a mounting cavity and a through hole, the axis center line of the through hole coincides with the axis center line of the turntable body 1, a sleeve 6 is provided in the through hole, a No. 1 bearing 7 is provided at the upper end of the sleeve 6, a No. 2 bearing 8 is provided at the lower end of the sleeve 6, the rotating shaft 3 is sleeved in the No. 1 bearing 7 and the No. 2 bearing 8, the permanent magnet motor 5 comprises a base, a stator 51 and a rotor 52, the base is provided in the mounting cavity, the stator 51 is provided in the sleeve 6, the rotor 52 is fixedly connected to the rotating shaft 3, and the inner ring of the No. 2 bearing 8 is fixedly connected to the rotating shaft 3 through the locking nut 2. A chuck 9 is detachably provided at the upper end of the rotating shaft 3.

[0023] It should be noted that the machine tool can be installed with a turning tool for turning, a milling cutter for milling, and a grinding wheel for abrasive processing.

[0024] In actual use, when the rotating shaft 3 needs to be stationary relative to the turntable body 1 and indexing processing is performed, the workpiece to be processed is installed on the chuck 9, and the excitation value of the permanent magnet motor 5 is set so that the permanent magnet motor 5 generates a torque force that overcomes the rotation of the rotating shaft relative to the turntable body, and then the No. 1 motor works, driving the turntable body 1 to drive the rotating shaft 3 to rotate synchronously, and the workpiece to be processed is subjected to indexing milling processing. When the No. 1 motor is in a non-working turntable, the workpiece to be processed needs to be turned or abraded. The speed of the permanent magnet motor 5 is set according to the processing technology required for the workpiece. When the workpiece is turned, the permanent magnet motor 5 rotates. The specific action is: after the stator 51 is energized, the rotor 52 drives the rotating shaft 3 to rotate in the No. 1 bearing 7 and the No. 2 bearing 8 at a high speed, so that the chuck 9 fixedly connected to the rotating shaft 3 drives the workpiece to rotate synchronously with the rotating shaft 3, and the workpiece is turned by a turning tool. When the workpiece needs to be abraded, the machine tool becomes a grinding wheel. At this time, the rotor 52 of the permanent magnet motor 5 drives the rotating shaft 3 to rotate, and the rotating shaft 3 rotates in the No. 1 bearing 7 and the No. 2 bearing 8, so that the chuck 9 fixedly connected to the rotating shaft 3 and the workpiece fixed by the chuck 9 rotate synchronously, and the grinding wheel completes the abrasion of the workpiece. When the turntable body 1 needs to be used directly to index the workpiece, the chuck 9 is removed from the rotating shaft 3, and then the workpiece is directly installed on the turntable body 1, and the No. 1 motor drives the turntable body 1 to rotate.

[0025] In the above design, by installing a permanent magnet motor 5 that drives the rotating shaft 3 to rotate built into the indexing turntable, the workpiece mounted on the chuck can be indexed and milled while the rotating shaft 3 is fixed and the turntable body 1 is rotating. When turning or grinding the workpiece is required, there is no need to remove the workpiece from the chuck 9 and then reinstall it. The workpiece can be directly rotated with the turntable body 1 fixed and the rotating shaft 3 working to complete the turning or grinding. This saves the time of reinstalling the workpiece after indexing and milling, and avoids installation errors caused by installing the workpiece on different processing equipment, which can effectively improve processing accuracy and work efficiency.

[0026] Specifically, a center positioning bearing 10 is further arranged in the through hole, the shaft sleeve 6 is sleeved in the center positioning shaft sleeve 6 , and the upper end of the shaft sleeve 6 is fixedly connected to the turntable body 1 by threads.

[0027] During actual assembly, the center positioning bearing 10 is first installed in the through hole, and then the shaft sleeve 6 is arranged in the center positioning bearing 10 .

[0028] In the above design, the shaft sleeve 6 can be effectively positioned by providing the center positioning bearing 10, so that the installation accuracy of the shaft sleeve 6 can be guaranteed.

[0029] Specifically, a plurality of grooves 101 are arranged on the upper end surface of the turntable body 1 .

[0030] In actual use, when the chuck 9 needs to be removed from the rotating shaft 3, the workpiece is fixed to the groove 101 of the turntable body by external bolts.

[0031] In the above design, by providing a plurality of grooves 101, the workpiece can be stably mounted on the turntable body 1, so that when the turntable body 1 indexes the workpiece, the position of the workpiece is offset by a predetermined angle, which can effectively ensure the processing accuracy of the workpiece.

[0032] Specifically, a placement groove 102 is provided on the upper end surface of the indexing turntable body 1 , a chuck 9 is provided on the placement groove 102 , and the chuck 9 is fixedly connected to the rotating shaft 3 .

[0033] It should be noted that the diameter of the chuck 9 is much larger than the diameter of the rotating shaft 3 .

[0034] In actual use, when the chuck 9 needs to be installed on the rotating shaft 3, the chuck 9 is placed in the placement groove 102, and then the chuck 9 is fixed to the end surface of the rotating shaft 3 by using external bolts. When the turntable body 1 needs to be used to install a workpiece, the bolts used to connect the chuck 9 and the rotating shaft 3 are removed, and the chuck 9 is taken out of the placement groove 102.

[0035] In the above design, by setting the placement groove 102, the placement groove 102 can limit the chuck 9, making the chuck 9 more stable after installation, so that the movement trajectory of the workpiece clamped by the chuck 9 is stable during processing, ensuring the processing accuracy of the workpiece.

[0036] Specifically: a cover plate 11 is disposed at the lower end of the through hole.

[0037] During actual assembly, after the rotating shaft 3 is installed in the through hole, the cover plate 11 is installed at the lower end of the through hole.

[0038] In the above design, by setting the cover plate 11, the inside of the through hole can be protected to prevent external debris from entering the through hole from the lower end of the through hole during actual use and entangled in the connection between the No. 1 bearing 7, the No. 2 bearing 8 and the rotating shaft 3, thereby avoiding affecting the rotation of the rotating shaft 3.

[0039] A method for using a dividing turntable with a built-in rotating shaft 3 comprises the following steps:

[0040] S1. The machine tool cutter is a milling cutter. The workpiece to be processed is mounted on the chuck 9. The excitation value of the permanent magnet motor 5 is set so that the permanent magnet motor 5 generates a torque force to overcome the rotation of the rotating shaft 3 relative to the turntable body 1. Then the No. 1 motor works to drive the turntable body 1 to drive the rotating shaft 3 to rotate synchronously, and the workpiece to be processed is subjected to indexing milling.

[0041] S2, the machine tool tool is changed into a turning tool, the No. 1 motor stops working, and after the stator 51 of the permanent magnet motor 5 is energized, the rotor 52 drives the rotating shaft 3 to rotate in the No. 1 bearing 7 and the No. 2 bearing 8 at high speed, so that the chuck 9 fixedly connected to the rotating shaft 3 drives the workpiece to rotate synchronously with the rotating shaft 3, and the workpiece is turned by the turning tool.

[0042] S3, the machine tool cutter is changed into a grinding wheel, the No. 1 motor stops working, and after the stator 51 of the permanent magnet motor 5 is energized, the rotor 52 drives the rotating shaft 3 at high speed in the No. 1 bearing 7 and the No. 2 bearing 8 to rotate in the opposite direction of the turning process, so that the chuck 9 fixedly connected to the rotating shaft 3 drives the workpiece to rotate synchronously with the rotating shaft 3, and the workpiece is abrasively processed by the grinding wheel.

[0043] Embodiment 1: A graduated turntable with a built-in rotating shaft 3, comprising a turntable body 1 and a No. 1 motor driving the turntable body 1 to rotate, and also comprising a locking nut 2, a rotating shaft 3 and a permanent magnet motor 5 for driving the rotating shaft 3 to rotate, wherein the turntable body 1 is provided with a mounting cavity and a through hole, the axis of the through hole coincides with the axis of the turntable body 1, a sleeve 6 is provided in the through hole, a No. 1 bearing 7 is provided at the upper end of the sleeve 6, a No. 2 bearing 8 is provided at the lower end of the sleeve 6, the rotating shaft 3 is sleeved in the No. 1 bearing 7 and the No. 2 bearing 8, the permanent magnet motor 5 comprises a base, a stator 51 and a rotor 52, the base is provided in the mounting cavity, the stator 51 is provided in the sleeve 6, the rotor 52 is fixedly connected to the rotating shaft 3, and the inner ring of the No. 2 bearing 8 is fixedly connected to the rotating shaft 3 via a locking nut 2. A chuck 9 is detachably provided at the upper end of the rotating shaft 3. The through hole is also provided with a center positioning bearing 10, the sleeve 6 is sleeved in the center positioning sleeve 6, and the upper end of the sleeve 6 is threadedly fixedly connected to the turntable body 1. The upper end surface of the indexing turntable body 1 is provided with a placement groove 102, and the chuck 9 is arranged on the placement groove 102. The lower end of the through hole is provided with a cover plate 11.

[0044] In actual use, when the workpiece is turned, the permanent magnet motor 5 rotates, and the No. 1 motor is in a non-tooling state. The specific actions are: after the stator 51 is energized, the rotor 52 drives the rotating shaft 3 to rotate in the No. 1 bearing 7 and the No. 2 bearing 8 at high speed, so that the chuck 9 fixedly connected to the rotating shaft 3 drives the workpiece to rotate synchronously with the rotating shaft 3, and the workpiece is turned by a turning tool.

[0045] In the above design, the workpiece can be directly mounted on the chuck 9 connected to the rotating shaft 3, and the chuck 9 is driven to rotate by the permanent magnet motor 5, so that the workpiece can be turned.

[0046] Embodiment 2: A graduated turntable with a built-in rotating shaft 3, comprising a turntable body 1 and a No. 1 motor driving the turntable body 1 to rotate, and also comprising a locking nut 2, a rotating shaft 3 and a permanent magnet motor 5 for driving the rotating shaft 3 to rotate, wherein the turntable body 1 is provided with a mounting cavity and a through hole, the axis of the through hole coincides with the axis of the turntable body 1, a sleeve 6 is provided in the through hole, a No. 1 bearing 7 is provided at the upper end of the sleeve 6, a No. 2 bearing 8 is provided at the lower end of the sleeve 6, the rotating shaft 3 is sleeved in the No. 1 bearing 7 and the No. 2 bearing 8, the permanent magnet motor 5 comprises a base, a stator 51 and a rotor 52, the base is provided in the mounting cavity, the stator 51 is provided in the sleeve 6, the rotor 52 is fixedly connected to the rotating shaft 3, and the inner ring of the No. 2 bearing 8 is fixedly connected to the rotating shaft 3 via a locking nut 2. A chuck 9 is detachably provided at the upper end of the rotating shaft 3. The through hole is also provided with a center positioning bearing 10, the sleeve 6 is sleeved in the center positioning sleeve 6, and the upper end of the sleeve 6 is threadedly fixedly connected to the turntable body 1. The upper end surface of the indexing turntable body 1 is provided with a placement groove 102, and the chuck 9 is arranged on the placement groove 102. The lower end of the through hole is provided with a cover plate 11.

[0047] In actual use, when it is necessary to grind the workpiece, the permanent magnet motor 5 drives the rotating shaft 3 to rotate in the opposite direction to the direction in which the rotating shaft 3 rotates during turning, and then the workpiece is ground using a grinding wheel.

[0048] In the above design, the rotating shaft 3 can be used to directly drive the chuck 9 to rotate, so that the workpiece does not need to be re-clamped after turning, and the grinding of the workpiece can be completed directly.

[0049] Embodiment 3: A graduated turntable with a built-in rotating shaft 3, comprising a turntable body 1 and a No. 1 motor driving the turntable body 1 to rotate, and also comprising a locking nut 2, a rotating shaft 3 and a permanent magnet motor 5 for driving the rotating shaft 3 to rotate, wherein the turntable body 1 is provided with a mounting cavity and a through hole, the axis of the through hole coincides with the axis of the turntable body 1, a sleeve 6 is provided in the through hole, a No. 1 bearing 7 is provided at the upper end of the sleeve 6, a No. 2 bearing 8 is provided at the lower end of the sleeve 6, the rotating shaft 3 is sleeved in the No. 1 bearing 7 and the No. 2 bearing 8, the permanent magnet motor 5 comprises a base, a stator 51 and a rotor 52, the base is provided in the mounting cavity, the stator 51 is provided in the sleeve 6, the rotor 52 is fixedly connected to the rotating shaft 3, and the inner ring of the No. 2 bearing 8 is fixedly connected to the rotating shaft 3 via a locking nut 2. A chuck 9 is detachably provided at the upper end of the rotating shaft 3. The through hole is also provided with a center positioning bearing 10, the sleeve 6 is sleeved in the center positioning sleeve 6, and the upper end of the sleeve 6 is threadedly fixedly connected to the turntable body 1. The upper end surface of the indexing turntable body 1 is provided with a placement groove 102, and the chuck 9 is arranged on the placement groove 102. The lower end of the through hole is provided with a cover plate 11.

[0050] In actual use, when the turntable body 1 is needed to fix the workpiece, the chuck 9 is removed from the rotating shaft 3, and then the workpiece is directly mounted on the placement groove 102 of the turntable body 1, and the No. 1 motor drives the turntable body 1 to rotate.

[0051] In the above design, the chuck 9 is detachably arranged in the placement groove 102, so that the workpiece can be directly clamped by the turntable body 1.

[0052] Embodiment 4: A graduated turntable with a built-in rotating shaft 3, comprising a turntable body 1 and a No. 1 motor driving the turntable body 1 to rotate, and also comprising a locking nut 2, a rotating shaft 3 and a permanent magnet motor 5 for driving the rotating shaft 3 to rotate, wherein the turntable body 1 is provided with a mounting cavity and a through hole, the axis of the through hole coincides with the axis of the turntable body 1, a sleeve 6 is provided in the through hole, a No. 1 bearing 7 is provided at the upper end of the sleeve 6, a No. 2 bearing 8 is provided at the lower end of the sleeve 6, the rotating shaft 3 is sleeved in the No. 1 bearing 7 and the No. 2 bearing 8, the permanent magnet motor 5 comprises a base, a stator 51 and a rotor 52, the base is provided in the mounting cavity, the stator 51 is provided in the sleeve 6, the rotor 52 is fixedly connected to the rotating shaft 3, and the inner ring of the No. 2 bearing 8 is fixedly connected to the rotating shaft 3 via a locking nut 2. A chuck 9 is detachably provided at the upper end of the rotating shaft 3. The through hole is also provided with a center positioning bearing 10, the sleeve 6 is sleeved in the center positioning sleeve 6, and the upper end of the sleeve 6 is threadedly fixedly connected to the turntable body 1. The upper end surface of the indexing turntable body 1 is provided with a placement groove 102, and the chuck 9 is arranged on the placement groove 102. The lower end of the through hole is provided with a cover plate 11.

[0053] In actual use, when the rotating shaft 3 needs to be stationary relative to the turntable body 1 and indexing processing is performed, the workpiece to be processed is mounted on the chuck 9. By setting the excitation value of the permanent magnet motor 5, the permanent magnet motor 5 generates a torque force to overcome the rotation of the rotating shaft relative to the turntable body. Then motor No. 1 works to drive the turntable body 1 to drive the rotating shaft 3 to rotate synchronously, and indexing milling is performed on the workpiece to be processed.

[0054] In the above design, when the workpiece to be processed is mounted on the chuck 9, the permanent magnet motor 5 can generate a force capable of overcoming the rotation of the rotating shaft 3 relative to the turntable body 1 by setting the excitation of the permanent magnet motor 5, thereby ensuring that the rotating shaft 3 is fixed. This ensures that the workpiece to be processed set on the chuck 9 completes the indexing milling process.

[0055] To further explain in detail, it should be understood that the above is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for using a graduated turntable with a built-in rotating shaft, the graduated turntable comprising a turntable body (1) and a first motor for driving the turntable body (1) to rotate. Features: It also includes a locking nut (2), a rotating shaft (3) and a permanent magnet motor (5) for driving the rotating shaft (3) to rotate. The turntable body (1) is provided with a mounting cavity and a through hole. The axis of the through hole coincides with the axis of the turntable body (1). A sleeve (6) is provided in the through hole. A No. 1 bearing (7) is provided at the upper end of the sleeve (6). A No. 2 bearing (8) is provided at the lower end of the sleeve (6). The rotating shaft (3) is sleeved in the No. 1 bearing (7) and the No. 2 bearing (8). The permanent magnet motor (5) includes a base, a stator (51) and a rotor (52). The base is provided in the mounting cavity. The stator (51) is provided in the sleeve (6). The rotor (52) is fixedly connected to the rotating shaft (3). The inner ring of the No. 2 bearing (8) is fixedly connected to the rotating shaft (3) via a locking nut (2). A chuck (9) is detachably provided at the upper end of the rotating shaft (3). The method of use includes the following steps: S1, the machine tool cutter is a milling cutter, the workpiece to be processed is mounted on the chuck (9), the excitation value of the permanent magnet motor (5) is set, so that the permanent magnet motor (5) generates a torque force that overcomes the rotation of the rotating shaft (3) relative to the turntable body (1), and then the No. 1 motor works to drive the turntable body (1) to drive the rotating shaft (3) to rotate synchronously, and the workpiece to be processed is subjected to indexing milling processing; S2, the machine tool tool is changed into a turning tool, the No. 1 motor stops working, and after the stator (51) of the permanent magnet motor (5) is energized, the rotor (52) drives the rotating shaft (3) to rotate in the No. 1 bearing (7) and the No. 2 bearing (8) at high speed, so that the chuck (9) fixedly connected to the rotating shaft (3) drives the workpiece to rotate synchronously with the rotating shaft (3), and the turning tool is used to turn the workpiece; S3, the machine tool cutter is changed into a grinding wheel, the No. 1 motor stops working, and after the stator (51) of the permanent magnet motor (5) is energized, the rotor (52) drives the rotating shaft (3) at high speed to rotate in the No. 1 bearing (7) and the No. 2 bearing (8) in the opposite direction to the rotation direction of the lathe, so that the chuck (9) fixedly connected to the rotating shaft (3) drives the workpiece to rotate synchronously with the rotating shaft (3), and the grinding wheel is used to perform abrasive processing on the workpiece.

2. A method for using the indexing turntable with a built-in rotating axis according to claim 1, Features: A center positioning bearing (10) is also arranged in the through hole, and the shaft sleeve (6) is sleeved in the center positioning shaft sleeve (6). The upper end of the shaft sleeve (6) is threadedly fixedly connected to the turntable body (1).

3. A method for using the indexing turntable with a built-in rotating axis according to claim 1, Features: The upper end surface of the turntable body (1) is provided with a plurality of grooves (101).

4. A method for using the indexing turntable with a built-in rotating axis according to claim 1, Features: The upper end surface of the indexing turntable body (1) is provided with a placement groove (102), and the chuck (9) is arranged on the placement groove (102).

5. A method for using the indexing turntable with a built-in rotating axis according to claim 1, Features: A cover plate (11) is provided at the lower end of the through hole.

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