Tapping equipment for motor rotating shaft

By designing a motor shaft tapping equipment that integrates the chamfering process, and using clamping and material grasping mechanisms to achieve automated operation, the problems of cumbersome and high cost caused by the separation of tapping and chamfering steps in the prior art are solved, and the problems of cumbersome and high cost are improved. Processing efficiency and reduce production costs.

CN222221743UActive Publication Date: 2024-12-24WENZHOU TONGMA MOTOR CO LTD
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Patent Information

Application Number
CN202421035642.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-14
Publication Date
2024-12-24
Estimated Expiration
2034-05-14

AI Technical Summary

Technical Problem

The tapping and chamfering steps of existing motor shafts are carried out separately, which is low in automation, resulting in cumbersome operation, long time, high labor costs and high production costs.

Method used

Design a motor shaft tapping equipment that integrates the chamfering process, including clamping mechanism, material grabbing mechanism and processing mechanism, including tapping components and chamfering components, to achieve automated operation through mechanical structures such as cylinder drive and sliders, and integrate inverting The angle process is in the tapping equipment.

Benefits of technology

It simplifies the operation process, saves time, improves processing efficiency, reduces labor costs, and reduces production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to tapping equipment for a motor rotating shaft, which comprises a bottom plate, two clamping mechanisms which are arranged on the bottom plate and are respectively distributed front and back, a material grabbing mechanism which is arranged above the bottom plate and is mutually matched with the two clamping mechanisms, and two processing mechanisms which are arranged at the top of the bottom plate and are respectively and symmetrically distributed on the left side and the right side of the material grabbing mechanism, the machining mechanism comprises a tapping assembly and a chamfering assembly arranged in front of the tapping assembly. The clamping mechanism comprises two side plates which are vertically inserted and fixed in the bottom plate and arranged in a bilateral symmetry mode, an execution unit arranged between the two side plates and a first air cylinder fixed between the lower ends of the two side plates, and the telescopic end of the first air cylinder is vertically upwards arranged and connected with the execution unit; according to the utility model, the chamfering process of the motor rotating shaft is integrated into tapping equipment, so that more time is saved, the processing efficiency is improved, and the labor cost is reduced, so that the production cost is reduced.
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Description

Technical Field

[0001] The utility model relates to a tapping device for a motor shaft. Background Art

[0002] The motor shaft refers to the rotating shaft in the motor used to connect the load and output power. It is usually composed of the rotor and bearings of the motor. The main function of the motor shaft is to convert electrical energy into mechanical energy and transfer it to the load for work. The production of the motor shaft requires multiple processes, including processing a threaded hole in the center of both ends. The processing steps of the threaded hole are first drilling, then tapping, and finally chamfering the opening; at present, the tapping and chamfering steps of the motor shaft are carried out separately in the corresponding equipment, so the motor shaft must be discharged and transferred after tapping, and then sent to the chamfering equipment. Since the existing tapping equipment and chamfering equipment have a low degree of automation, the above process is all completed manually, which makes the operation process more cumbersome and takes more time, which leads to low processing efficiency; in addition, since the above process must rely on manual labor, the labor cost is also high, resulting in high production costs, which needs further improvement. Utility Model Content

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a tapping device for a motor shaft which integrates a chamfering process to simplify the operation, thereby saving more time to improve processing efficiency and reducing labor costs to lower production costs.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: a tapping device for a motor shaft, characterized in that it includes a base plate, two clamping mechanisms arranged on the base plate and respectively distributed front and back, a material grabbing mechanism arranged above the base plate and cooperating with the two clamping mechanisms, and two processing mechanisms arranged on the top of the base plate and symmetrically distributed on the left and right sides of the material grabbing mechanism, wherein the processing mechanism includes a tapping assembly and a chamfering assembly arranged in front of the tapping assembly;

[0005] The clamping mechanism includes two side plates vertically inserted and fixed in the bottom plate and arranged symmetrically, an actuator arranged between the two side plates, and a first cylinder fixed between the lower ends of the two side plates, wherein the telescopic end of the first cylinder is arranged vertically upward and connected to the actuator;

[0006] The material grabbing mechanism comprises a first bracket and a second bracket fixed on the top of the bottom plate and arranged front and back respectively, a beam plate transversely fixed between the first bracket and the second bracket, three material grabbing units which are arranged under the beam plate in sequence from front to back and have the function of front and back translation and are fixed to each other, and a second cylinder fixed on the beam plate, wherein the telescopic end of the second cylinder is arranged transversely forward or backward and connected to one of the material grabbing units;

[0007] The tapping assembly in a processing mechanism on the left and the tapping assembly in a processing mechanism on the right are respectively arranged on the left and right sides of a clamping mechanism at the rear;

[0008] The chamfering assembly in a processing mechanism on the left and the chamfering assembly in a processing mechanism on the right are respectively arranged on the left and right sides of a front clamping mechanism.

[0009] Preferably, the execution unit includes a V-shaped drive block, a rocker arm and a clamping block; the V-shaped drive block includes two, and the two V-shaped drive blocks are symmetrically arranged front and back, and each of the V-shaped drive blocks can be rotatably connected between the upper ends of the two side plates at the corner; the rocker arm includes two, and one end of the two rocker arms can be rotatably connected to the lower ends of the two V-shaped drive blocks, and the other ends of the two rocker arms can be rotatably connected to the telescopic end of the first cylinder; the clamping blocks include two, and the two clamping blocks are respectively fixed to the upper ends of the two V-shaped drive blocks.

[0010] Preferably, the material grabbing unit comprises a slider movably connected to the bottom of the beam plate to have a forward and backward translation function and a pneumatic finger fixed on the slider, and the two clamping jaws of the pneumatic finger are vertically arranged downward and respectively distributed forward and backward.

[0011] Preferably, a traction rod is fixed between the sliders in any two adjacent material grabbing units, and the telescopic end of the second cylinder is arranged transversely forward or backward and fixed on the slider in one of the material grabbing units.

[0012] Preferably, the tapping assembly includes a first movable frame movably connected to the top of the base plate to have a left-right translation function, a tapping motor fixed on the first movable frame, a third cylinder fixed on the top of the base plate, and a tap head concentrically and detachably fixed on the rotating shaft of the tapping motor, the rotating shaft of the tapping motor is arranged horizontally and in the direction of a corresponding execution unit, and the telescopic end of the third cylinder is arranged horizontally to the left or right and fixed on the first movable frame.

[0013] Preferably, the chamfering assembly includes a second movable frame movably connected to the top of the base plate to have a left and right translation function, a chamfering motor fixed on the second movable frame, a fourth cylinder fixed on the top of the base plate, and a chamfering head concentrically and detachably fixed on the rotating shaft of the chamfering motor. The rotating shaft of the chamfering motor is arranged horizontally and in the direction of a corresponding execution unit, and the telescopic end of the fourth cylinder is arranged horizontally to the left or right and fixed on the second movable frame.

[0014] Preferably, each of the two clamping jaws of the pneumatic finger is also fixed with a symmetrically arranged clamping plate, the inner sides of the two clamping blocks are each provided with an arc-shaped clamping groove, and the inner wall of each of the arc-shaped clamping grooves is provided with two open grooves distributed on the left and right, and two clips arranged on the left and right and respectively cooperating with the two open grooves are formed on the clamping plate, and an arc-shaped notch is provided on the inner side of each of the clips.

[0015] Preferably, two cavities are provided in the base plate, and the two cavities are respectively arranged on the left and right sides of a clamping mechanism at the rear. Correspondingly, two chip receiving buckets are fixed to the bottom of the base plate, and the top openings of the two chip receiving buckets are respectively arranged below the two cavities.

[0016] Preferably, a chip guide tube inclined downward is formed rearwardly at the bottom opening of each chip receiving bucket.

[0017] Compared with the prior art, the advantages of the utility model are: the utility model integrates the chamfering process of the motor shaft into the tapping equipment, thereby eliminating the process of discharging and re-feeding the motor shaft after tapping, thereby simplifying the operation, and can automatically transfer the motor shaft after tapping to the chamfering component without manual work, thereby saving a lot of time to improve processing efficiency, and reducing labor costs to reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view of the left rear side of the utility model;

[0019] Figure 2 This is a left front side bottom view of the present utility model;

[0020] Figure 3 This is a left front exploded structural diagram of the clamping mechanism of the present utility model. DETAILED DESCRIPTION

[0021] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0023] like Figures 1 to 3 As shown, a tapping device for a motor shaft comprises a base plate 1, two clamping mechanisms 4 arranged on the base plate 1 and respectively distributed front and back, a material grabbing mechanism 2 arranged above the base plate 1 and cooperating with the two clamping mechanisms 4, and two processing mechanisms 3 arranged on the top of the base plate 1 and symmetrically distributed on the left and right sides of the material grabbing mechanism 2, wherein the processing mechanism 3 comprises a tapping assembly and a chamfering assembly arranged in front of the tapping assembly;

[0024] The clamping mechanism 4 includes two side plates 41 vertically inserted and fixed in the bottom plate 1 and arranged symmetrically on both sides, an actuator arranged between the two side plates 41, and a first cylinder 43 fixed between the lower ends of the two side plates 41, wherein the telescopic end of the first cylinder 43 is arranged vertically upward and connected to the actuator;

[0025] The material grabbing mechanism 2 includes a first bracket 21 and a second bracket 22 fixed to the top of the bottom plate 1 and arranged front and back respectively, a beam plate 23 transversely fixed between the first bracket 21 and the second bracket 22, three material grabbing units which are arranged under the beam plate 23 in sequence from front to back and have the function of front and back translation and are fixed to each other, and a second cylinder 26 fixed to the beam plate 23, wherein the telescopic end of the second cylinder 26 is transversely arranged forward or backward and connected to one of the material grabbing units;

[0026] The tapping assembly in a processing mechanism 3 on the left and the tapping assembly in a processing mechanism 3 on the right are respectively arranged on the left and right sides of a clamping mechanism 4 at the rear;

[0027] The chamfering assembly in a left processing mechanism 3 and the chamfering assembly in a right processing mechanism 3 are respectively arranged on the left and right sides of a front clamping mechanism 4.

[0028] The execution unit includes a V-shaped drive block 42, a rocker rod 45 and a clamping block 44; the V-shaped drive block 42 includes two, and the two V-shaped drive blocks 42 are symmetrically arranged front and back, and each V-shaped drive block 42 can be rotatably connected between the upper ends of the two side plates 41 at the corner; the rocker rod 45 includes two, and one end of the two rocker rods 45 can be rotatably connected to the lower ends of the two V-shaped drive blocks 42, and the other ends of the two rocker rods 45 can be rotatably connected to the telescopic end of the first cylinder 43; the clamping block 44 includes two, and the two clamping blocks 44 are respectively fixed to the upper ends of the two V-shaped drive blocks 42.

[0029] The material grabbing unit includes a slider 24 movably connected to the bottom of the beam plate 23 to have a forward and backward translation function and a pneumatic finger 25 fixed on the slider 24. The two clamping claws of the pneumatic finger 25 are vertically arranged downward and respectively distributed forward and backward.

[0030] A traction rod 27 is also fixed between the sliders 24 in any two adjacent material grabbing units, and the telescopic end of the second cylinder 26 is arranged transversely forward or backward and fixed on the slider 24 in one of the material grabbing units.

[0031] The tapping assembly includes a first movable frame 31 movably connected to the top of the base plate 1 so as to have a left-right translation function, a tapping motor 32 fixed on the first movable frame 31, a third cylinder 33 fixed on the top of the base plate 1, and a tap head 34 concentrically and detachably fixed on the rotating shaft of the tapping motor 32. The rotating shaft of the tapping motor 32 is arranged horizontally and toward the direction of a corresponding execution unit, and the telescopic end of the third cylinder 33 is arranged horizontally to the left or right and fixed on the first movable frame 31.

[0032] The chamfering assembly includes a second movable frame 35 movably connected to the top of the base plate 1 so as to have a left-right translation function, a chamfering motor 36 fixed on the second movable frame 35, a fourth cylinder 38 fixed on the top of the base plate 1, and a chamfering head 37 concentrically and detachably fixed on the rotating shaft of the chamfering motor 36. The rotating shaft of the chamfering motor 36 is arranged horizontally and in the direction of a corresponding execution unit, and the telescopic end of the fourth cylinder 38 is arranged horizontally to the left or right and fixed on the second movable frame 35.

[0033] A symmetrically arranged clamping plate 28 is fixed to the two clamping jaws of each pneumatic finger 25, an arc-shaped clamping groove 441 is provided on the inner side of the two clamping blocks 44, and two opening grooves 442 distributed on the left and right are provided on the inner wall of each arc-shaped clamping groove 441. Two clamping pieces 281 arranged on the left and right and respectively cooperating with the two opening grooves 442 are formed on the clamping plate 28, and an arc-shaped notch 282 is provided on the inner side of each clamping piece 281.

[0034] Two cavities 101 are also provided in the base plate 1 , and the two cavities 101 are respectively arranged on the left and right sides of a clamping mechanism 4 at the rear. Correspondingly, two chip receiving buckets 5 are fixed to the bottom of the base plate 1 , and the top openings of the two chip receiving buckets 5 are respectively arranged below the two cavities 101 .

[0035] A chip guide tube 51 is formed at the bottom opening of each chip receiving bucket 5 and is arranged obliquely downward.

[0036] The clamping mechanism 4 also includes a seat block 46 fixed on the top of the base plate 1, a rectangular through hole 461 is opened in the seat block 46, two side plates 41 are vertically inserted and fixed in the rectangular through hole 461, a rectangular groove 462 is opened on the inner walls on the front and rear sides of the rectangular through hole 461, and the lower ends of the two V-shaped driving blocks 42 are movably embedded in the two rectangular grooves 462 respectively.

[0037] Working principle:

[0038] The telescopic end of the second cylinder 26 in the driving grabbing mechanism 2 is extended outward or retracted inward to drive the three grabbing units to move backward to the bottom. At this time, the rearmost grabbing unit moves to the rear of a clamping mechanism 4 at the rear; in the above process, the two jaws of the pneumatic fingers 25 in each grabbing unit need to be driven to separate from each other; then the first motor shaft is moved horizontally to the bottom of the two jaws of the pneumatic fingers 25 in the rearmost grabbing unit, and then the two jaws of each pneumatic finger 25 are driven to move closer to each other to clamp the above-mentioned motor shaft with the help of the arc-shaped notch 282 on each clamping piece 281 on the two clamping plates 28.

[0039] The telescopic end of the second air cylinder 26 is driven to retract inward or extend outward to drive the three grabbing units to move forward in the same way, thereby driving the motor shaft to move forward to the top of a clamping mechanism 4 at the rear. During this process, the telescopic end of the first cylinder 43 in each clamping mechanism 4 needs to be driven to extend outward to drive the lower ends of the two V-shaped drive blocks 42 to swing downward with the help of the two rocker bars 45 in the execution unit, thereby driving the two clamping blocks 44 to move away from each other with the help of the upper ends of the two V-shaped drive blocks 42. When the motor shaft moves to the top of a clamping mechanism 4 at the rear, the two clamping blocks 44 are respectively located on the front and rear sides of the motor shaft, and then each is driven The telescopic ends of the first cylinders 43 are contracted inwardly to drive the two clamping blocks 44 to move closer to each other, and then clamp the above-mentioned motor shaft with the help of the arc-shaped clamping groove 441; because the two opening grooves 442 on the clamping block 44 cooperate with the two clips 281 on the clamping plate 28, when the two clamping blocks 44 are clamped, each clip 281 can move through a corresponding opening groove 442, so that the swing of the clamping block 44 and the swing of the clamping plate 28 do not interfere with each other; the two ends of the clamped motor shaft are respectively concentrically arranged with the tap heads 34 in the two tapping assemblies at the rear; finally, the two jaws of each pneumatic finger 25 are driven to separate from each other to loosen the motor shaft.

[0040] The telescopic ends of the third cylinders 33 in the two tapping assemblies at the rear are driven to extend outward or retract inward to drive the tapping motor 32 to move toward the direction of the motor shaft with the help of the first moving frame 31, and at the same time, the tapping motor 32 is started so that its rotating shaft drives the tap head 34 to rotate. When the two rotating tap heads 34 are gradually inserted into the countersunk holes located at the centers of the two ends of the motor shaft, the tapping operation of the above-mentioned two countersunk holes will be automatically completed; after the tapping is completed, the telescopic ends of the two third cylinders 33 are driven to retract inward or extend outward to drive the tapping motor 32 away from the motor shaft in the same way, and at the same time, the rotating shaft of the tapping motor 32 is started to reverse so that the tap head 34 gradually separates from the processed threaded hole, thereby completing the tapping operation of the first motor shaft.

[0041] During the tapping of the first motor shaft, the second cylinder 26 is controlled in the same way to drive the three grabbing units to move backward to the bottom. At this time, the middle grabbing unit is located above the first motor shaft, and the second motor shaft is also sent to the bottom of the two clamping claws of the pneumatic fingers 25 in the rearmost grabbing unit, and then the two clamping claws of each pneumatic finger 25 are driven to move closer to each other to clamp the above two motor shafts at the same time; then the second cylinder 26 is controlled to drive the two motor shafts to move forward until the first motor shaft that completes tapping moves to the top of a clamping mechanism 4 in the front. At this time, the second motor shaft moves to the top of a clamping mechanism 4 at the rear, and then the two clamping mechanisms 4 are used to clamp the two motor shafts respectively in the same way.

[0042] The telescopic end of the fourth cylinder 38 in the two chamfering assemblies at the rear is driven to extend outward or retract inward to drive the chamfering motor 36 to move in the direction of the first motor shaft with the help of the second moving frame 35, and at the same time, the chamfering motor 36 is started so that its rotating shaft drives the chamfering head 37 to rotate. When the end of the rotating chamfering head 37 contacts the edge of the opening of the tapped threaded hole, the chamfered edge will be automatically processed on the edge of the opening of the threaded hole.

[0043] During the chamfering of the first motor shaft, the second cylinder 26 is controlled in the same way to drive the three grabbing units to move backward to the bottom. At this time, the frontmost grabbing unit is located above the first motor shaft, and the middle grabbing unit is located above the second motor shaft. Then, the third motor shaft is also sent to the bottom of the two clamping claws of the pneumatic fingers 25 in the rearmost grabbing unit; then the three motor shafts can be grabbed at the same time in the same way and then moved forward to the bottom; at this time, the second motor shaft is sent between the two chamfering components for chamfering, and the third is sent between the two tapping components for tapping. After the first motor shaft is released by the frontmost pneumatic finger 25, it will automatically fall off for automatic collection, and so on.

[0044] The utility model integrates the chamfering process of the motor shaft into the tapping equipment, thereby eliminating the process of discharging and re-feeding the motor shaft after tapping, thereby simplifying the operation, and can automatically transfer the motor shaft after tapping to the chamfering component without manual work, thereby saving a lot of time to improve processing efficiency, and reducing labor costs to reduce production costs.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A tapping device for a motor shaft, characterized in that: It includes a bottom plate, two clamping mechanisms arranged on the bottom plate and respectively distributed front and back, a material grabbing mechanism arranged above the bottom plate and cooperating with the two clamping mechanisms, and two processing mechanisms arranged on the top of the bottom plate and symmetrically distributed on the left and right sides of the material grabbing mechanism, wherein the processing mechanism includes a tapping assembly and a chamfering assembly arranged in front of the tapping assembly; The clamping mechanism includes two side plates vertically inserted and fixed in the bottom plate and arranged symmetrically, an actuator arranged between the two side plates, and a first cylinder fixed between the lower ends of the two side plates, wherein the telescopic end of the first cylinder is arranged vertically upward and connected to the actuator; The material grabbing mechanism comprises a first bracket and a second bracket fixed on the top of the bottom plate and arranged front and back respectively, a beam plate transversely fixed between the first bracket and the second bracket, three material grabbing units which are arranged under the beam plate in sequence from front to back and have the function of front and back translation and are fixed to each other, and a second cylinder fixed on the beam plate, wherein the telescopic end of the second cylinder is arranged transversely forward or backward and connected to one of the material grabbing units; The tapping assembly in a processing mechanism on the left and the tapping assembly in a processing mechanism on the right are respectively arranged on the left and right sides of a clamping mechanism at the rear; The chamfering assembly in a processing mechanism on the left and the chamfering assembly in a processing mechanism on the right are respectively arranged on the left and right sides of a front clamping mechanism.

2. The tapping device for a motor shaft according to claim 1, characterized in that: The execution unit includes a V-shaped drive block, a rocker arm and a clamping block; the V-shaped drive block includes two, and the two V-shaped drive blocks are symmetrically arranged front and back, and each of the V-shaped drive blocks can be rotatably connected between the upper ends of the two side plates at the corner; the rocker arm includes two, and one end of the two rocker arms can be rotatably connected to the lower ends of the two V-shaped drive blocks, and the other ends of the two rocker arms can be rotatably connected to the telescopic end of the first cylinder; the clamping blocks include two, and the two clamping blocks are respectively fixed to the upper ends of the two V-shaped drive blocks.

3. The tapping device for a motor shaft according to claim 2, characterized in that: The material grabbing unit comprises a slider movably connected to the bottom of the beam plate to have a forward and backward translation function and a pneumatic finger fixed on the slider, wherein two clamping claws of the pneumatic finger are vertically arranged downward and respectively distributed forward and backward.

4. The tapping device for a motor shaft according to claim 3, characterized in that: A traction rod is also fixed between the slide blocks in any two adjacent material grabbing units, and the telescopic end of the second cylinder is arranged transversely forward or backward and fixed on the slide block in one of the material grabbing units.

5. The tapping device for a motor shaft according to claim 1, characterized in that: The tapping assembly includes a first movable frame movably connected to the top of the base plate to have a left-right translation function, a tapping motor fixed on the first movable frame, a third cylinder fixed on the top of the base plate, and a tap head concentrically and detachably fixed on the rotating shaft of the tapping motor, the rotating shaft of the tapping motor is arranged horizontally and toward the direction of a corresponding execution unit, and the telescopic end of the third cylinder is arranged horizontally to the left or right and fixed on the first movable frame.

6. The tapping device for a motor shaft according to claim 1, characterized in that: The chamfering assembly includes a second movable frame movably connected to the top of the base plate to have a left and right translation function, a chamfering motor fixed on the second movable frame, a fourth cylinder fixed on the top of the base plate, and a chamfering head concentrically and detachably fixed on the rotating shaft of the chamfering motor. The rotating shaft of the chamfering motor is arranged horizontally and in the direction of a corresponding execution unit, and the telescopic end of the fourth cylinder is arranged horizontally to the left or right and fixed on the second movable frame.

7. The tapping device for a motor shaft according to claim 3, characterized in that: A symmetrically arranged clamping plate is fixed on the two clamping jaws of each pneumatic finger, an arc-shaped clamping groove is opened on the inner side of the two clamping blocks, and two opening grooves distributed on the left and right are opened on the inner wall of each arc-shaped clamping groove. Two clamping pieces arranged on the left and right and respectively cooperating with the two opening grooves are formed on the clamping plate, and an arc-shaped notch is opened on the inner side of each clamping piece.

8. The tapping device for a motor shaft according to claim 1, characterized in that: Two cavities are also provided in the base plate, and the two cavities are respectively arranged on the left and right sides of a clamping mechanism at the rear. Correspondingly, two chip receiving buckets are fixed to the bottom of the base plate, and the top openings of the two chip receiving buckets are respectively arranged below the two cavities.

9. The tapping device for a motor shaft according to claim 8, characterized in that: A chip guide tube is formed at the bottom opening of each chip receiving bucket and is arranged obliquely downward.