A machining method for a servo motor shaft

Abstract

The present invention discloses a method for machining a servo motor shaft, specifically relating to the technical field of servo motor shaft machining, which includes the following steps: Step 1, machining one end of the shaft: The shaft is fixed by a three-jaw chuck in Lathe 1, and then a tool is used to machine one end of the shaft; Step 2, machining the other end of the shaft: The shaft in Lathe 1 is taken out, turned around, and then fed into Lathe 2, where it is fixed by a chuck assembly in Lathe 2. After passing the airtightness detection, a tool is used to machine the other end of the shaft. The airtightness detection is carried out throughout the machining process. When the airtightness detection is unqualified, Lathe 2 stops and alarms. After the machining is completed, the servo motor shaft product is taken out. The machining method of the present invention has high machining efficiency, and the machined servo motor shaft has high machining accuracy and surface quality.

Description

Technical Field

[0001] The present invention relates to the technical field of servo motor shafts, and particularly relates to a processing method for a servo motor shaft. Background Art

[0002] A servo motor is an engine that controls the operation of mechanical components in a servo system. The rotational speed of the rotor of a servo motor is controlled by an input signal and can respond quickly. In an automatic control system, as an actuator, it has characteristics such as a small electromechanical time constant and high linearity, and can convert the received electrical signal into an angular displacement or angular velocity output on the motor shaft. The servo motor shaft is one of the key components of a servo motor, and it usually needs to be precisely processed to ensure the normal operation and performance of the motor. When processing a servo motor shaft, appropriate materials need to be selected, and common materials include various alloy steels, stainless steels, etc. During processing, rough machining is required first and then finish machining to improve the dimensional accuracy and surface finish of the shaft.

[0003] Currently, the processing of servo motor shafts uses integral shaft grinding. During grinding, a large amount of grinding heat is generated, which easily causes problems such as cracking and burning of the outer diameter and end face of the workpiece. There are also risks such as errors in secondary clamping and damage during handling during grinding, thereby reducing the processing accuracy and surface quality of the servo motor shaft. In addition, the stability of the servo motor shaft during processing is also a key factor affecting the processing accuracy of the servo motor shaft. Therefore, it is necessary to improve the stability of the servo motor shaft during the processing process. Based on this, a processing method for a servo motor shaft is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a processing method for a servo motor shaft, which has high processing efficiency, and the processed servo motor shaft has high processing accuracy and surface quality.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A processing method for a servo motor shaft, the specific steps are as follows:

[0006] Step 1: Process one end of the shaft:

[0007] A1: The manipulator feeds the shaft into the three-jaw chuck in Lathe 1;

[0008] A2: After Lathe 1 is started, the turret in Lathe 1 drives the ejector assembly to move to the shaft to eject the shaft, and then the three-jaw chuck fixes the shaft;

[0009] A3: The tool sequentially performs rough turning of the end face, rough machining of the end face center hole, rough turning of the outer diameter, finish turning of the end face, finish machining of the end face center hole, and finish machining of the outer diameter on one end of the shaft;

[0010] A4: The manipulator takes out the shaft;

[0011] Step 2: Process the other end of the shaft:

[0012] B1: After the manipulator turns the shaft around, it feeds the shaft into the chuck assembly inside the second lathe.

[0013] B2: After the second lathe starts, the turret inside the second lathe drives the ejector assembly to move to the shaft to eject the shaft, and then the chuck assembly fixes the shaft.

[0014] B3: After the airtightness test is qualified, the tool performs rough turning of the end face, rough machining of the center hole of the end face, rough turning of the outer diameter, finish turning of the end face, finish machining of the center hole of the end face, and finish machining of the outer diameter on the other end of the shaft in sequence.

[0015] Meanwhile, the airtightness test is carried out throughout the machining process. When the airtightness test is unqualified, the second lathe stops and alarms.

[0016] B4: After the machining is completed, the manipulator takes out the servo motor shaft product.

[0017] Preferably, the machining of the servo motor shaft needs to use a servo motor shaft machining system. The servo motor shaft machining system includes a first lathe and a second lathe. On one side of the inner wall of the first lathe, a three-jaw chuck for fixing the shaft is fixed. On one side of the inner wall of the second lathe, a chuck assembly for fixing the shaft is fixed.

[0018] Preferably, the chuck assembly includes a chuck body. On one side inside the chuck body, there are three movable blocks. On the inner sides of the three movable blocks, a first jaw is fixed respectively. The three first jaws are all arranged on the outer wall of the shaft. On the outer wall of the chuck body, three fixing bolts are fixed. And at the positions corresponding to the fixing bolts on the outer walls of the three movable blocks, inclined sliding grooves are opened. The bottom of the fixing bolt slides inside its corresponding sliding groove, so that the movable block drives the first jaw to move along the inclined fixing bolt, that is, the first jaw moves simultaneously in the radial and axial directions, realizing clamping the shaft and locking it backward, improving the stability of shaft fixation.

[0019] Preferably, on the other side of the chuck body, a driving slide bar penetrates through and is slidably connected with the chuck body. One end of the driving slide bar is connected with the three movable blocks. The other end of the driving slide bar is fixed with a connecting bolt, and the connecting bolt is pulled by a hydraulic pull rod. Inside the movable block and the first jaw, there is a bushing. The bushing is fixed at one end of the chuck body, and one end of the bushing close to the driving slide bar extends into the driving slide bar and is slidably connected with the driving slide bar. The shaft is inserted into the bushing and is tightened by a ejector rod at one end inside the bushing, and the ejector rod is connected with the inner wall of the bushing through a spring.

[0020] Preferably, an airtightness detection component for performing the airtightness test in step two is fixed on the chuck assembly. The airtightness detection component includes a fixed ring. On the fixed ring, three convex blocks are integrally formed, and the three convex blocks are distributed in a circular array around the cross-section center of the fixed ring. Three slots are formed between the three convex blocks. Between the fixed ring and the three convex blocks, there are air source channels communicating with each other.

[0021] Preferably, the fixed circular ring is arranged between the shaft sleeve of the chuck assembly and the three first jaws, and the fixed circular ring is coaxially fixed with the shaft sleeve. The three first jaws are respectively inserted into the three slots; the inner end faces of the three bumps are all in contact with the outer wall of the shaft. One end of the air source channel extends between the joint surface of the bump and the shaft; an air channel communicating with the air source channel is opened in the shaft sleeve, and the end of the air channel far from the air source channel is connected to an external air source. A pressure sensor is installed in the path connecting the air channel and the external air source. During detection, air is conveyed into the air source channel. When the air pressure of the pressure sensor increases, it indicates that the airtight detection is qualified, which means the shaft is installed in place and the lathe two works normally. Otherwise, when the airtight detection is unqualified, the lathe two alarms and stops at the same time.

[0022] Preferably, turrets are provided on the other sides of the inner walls of the first lathe and the second lathe. In addition to installing cutting tools, the turrets are also equipped with ejector assemblies; the ejector assembly includes a hollow outer rod, a sliding inner rod is slidably arranged in the hollow outer rod, one end of the sliding inner rod extends out of one end of the hollow outer rod and is fixed with an ejector block, and the other end of the sliding inner rod is connected to the inner wall of the hollow outer rod through a connecting spring.

[0023] Preferably, the servo motor shaft processing system further includes a manipulator for feeding, which is arranged outside the first lathe and the second lathe. The manipulator is provided with a manipulator jaw module. The manipulator jaw module includes a connecting frame rotatably connected to the manipulator, and two groups of second jaws are arranged on the connecting frame, which is convenient for continuously picking and placing the shaft and improving the processing efficiency.

[0024] Preferably, the servo motor shaft processing system further includes a magazine, a blanking conveyor and a demagnetizer. The magazine and the blanking conveyor are arranged on one side of the first lathe, and the demagnetizer is arranged on one side of the manipulator. After the manipulator grabs the shaft on the magazine, it is sent into the first lathe and the second lathe for processing. The processed servo motor shaft products are demagnetized by the demagnetizer and then placed in the blanking conveyor for blanking. The demagnetizer can eliminate the magnetism obtained by the servo motor shaft during processing due to friction, impact, etc., and avoid the influence of magnetism on the performance of the servo motor.

[0025] In the above technical solution, the technical effects and advantages provided by the present invention are as follows:

[0026] The present invention realizes the precision machining of the servo motor shaft by turning instead of grinding, avoiding the problems of cracking and burning on the outer diameter and end face caused by grinding, as well as the risks of secondary clamping error and handling collision during grinding. The coaxiality of both ends of the servo motor shaft is high, the machining accuracy is high, and the surface quality is good;

[0027] After the shaft enters the lathe, the chuck assembly clamps and locks the shaft backward, realizing multiple fixations of the shaft in the radial and axial directions, improving the stability of the shaft during the machining process, and greatly improving the machining accuracy of the servo motor shaft;

[0028] After the shaft is fixed, the present invention performs airtight detection throughout the machining process. If the airtight detection fails, an alarm is given in a timely manner to stop the machine, maintaining the stability of the shaft during machining and further improving the machining accuracy of the servo motor shaft. Description of the Drawings

[0029] Figure 1 is the overall structure diagram of the servo motor shaft machining system of the present invention;

[0030] Figure 2 is Figure 1 the top view of;

[0031] Figure 3 is Figure 1 the partial structure diagram of;

[0032] Figure 4 is the structure diagram of the chuck assembly and the airtight detection assembly in the servo motor shaft machining system of the present invention;

[0033] Figure 5 is Figure 4 the side view of;

[0034] Figure 6 is the structure diagram of the airtight detection assembly in the servo motor shaft machining system of the present invention;

[0035] Figure 7 is Figure 3 the enlarged structure diagram of part A in;

[0036] Figure 8 is the cross-sectional view of the ejector assembly in the servo motor shaft machining system of the present invention;

[0037] Figure 9 is the structure diagram of the manipulator jaw module in the servo motor shaft machining system of the present invention;

[0038] Figure 10 is the machining schematic diagram of the servo motor shaft of the present invention.

[0039] Description of the Reference Numerals:

[0040] Lathe 1; 2, Lathe 2;

[0041] 3, Chuck assembly; 31, Chuck body; 32, Movable block; 33, Jaw 1; 34, Fixing bolt; 35, Chute; 36, Driving slide bar; 37, Connecting bolt; 38, Bush; 39, Ejector rod;

[0042] 4, Airtight detection assembly; 41, Fixed ring; 42, Protrusion; 43, Slot; 44, Air source channel;

[0043] 5, Ejector assembly; 51, Hollow outer rod; 52, Sliding inner rod; 53, Ejector block; 54, Connecting spring;

[0044] 6. Manipulator; 7. Manipulator gripper module; 71. Connecting frame; 72. Second gripper

[0045] 8. Magazine; 9. Discharge conveyor; 10. Demagnetizer Specific embodiments

[0046] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings

[0047] The present invention provides a servo motor shaft processing system for servo motor shaft processing as shown in Figures 1-9 which includes a first lathe 1 and a second lathe 2. On one side of the inner wall of the first lathe 1, a three-jaw chuck for fixing the shaft is fixed. On one side of the inner wall of the second lathe 2, a chuck assembly 3 for fixing the shaft is fixed. Moreover, turrets are provided on the other side of the inner walls of the first lathe 1 and the second lathe 2. In addition to installing cutting tools, a pusher assembly 5 is also installed on the turrets

[0048] Specifically, as shown in Figures 7-8 the pusher assembly 5 includes a hollow outer rod 51. A sliding inner rod 52 is slidably arranged in the hollow outer rod 51. One end of the sliding inner rod 52 extends out of one end of the hollow outer rod 51 and is fixed with a pusher block 53. The other end of the sliding inner rod 52 is connected to the inner wall of the hollow outer rod 51 through a connecting spring 54. After the first lathe 1 and the second lathe 2 are started, the turret drives the pusher assembly 5 to move to the position of the shaft, and the shaft is pushed by the pusher block 53, that is, the shaft is pushed into the three-jaw chuck or the chuck assembly 3. Then, the three-jaw chuck or the chuck assembly 3 fixes the shaft again, improving the stability of the shaft during the processing process, thereby improving the processing accuracy of the servo motor shaft

[0049] Next, as shown in Figures 1-3 and Figure 9 a manipulator 6 for feeding outside the first lathe 1 and the second lathe 2 is provided. A manipulator gripper module 7 is provided on the manipulator 6. The manipulator gripper module 7 includes a connecting frame 71 rotatably connected to the manipulator 6. Two groups of second grippers 72 are provided on the connecting frame 71. The two groups of second grippers 72 can be used simultaneously. For example, a semi-finished shaft processed in the first lathe 1 is clamped by the first group of second grippers 72. Then, the empty second group of second grippers 72 first takes out the finished shaft in the second lathe 2. Then, the connecting frame 71 is rotated to insert the semi-finished shaft on the first group of second grippers 72 into the chuck assembly 3 of the second lathe 2, enabling the continuous taking and placing of the shaft in the second lathe 2 and improving the processing efficiency

[0050] After one end of the shaft is processed in the first lathe 1, it needs to enter the second lathe 2 to process the other end. Therefore, in the second lathe 2, after one end of the shaft is processed, it is clamped by the chuck assembly 3. As shown in Figures 4-5As shown, the chuck assembly 3 includes a chuck body 31. Inside one side of the chuck body 31, there are three movable blocks 32. Inside each of the three movable blocks 32, a first jaw 33 is fixed. The three first jaws 33 are distributed in an annular array around the center of the cross-section of the chuck body 31. On the outer wall of the chuck body 31, three fixing bolts 34 are fixed. At the positions corresponding to the fixing bolts 34 on the outer walls of the three movable blocks 32, inclined sliding grooves 35 are provided. The bottom of the fixing bolt 34 slides inside its corresponding sliding groove 35.

[0051] On the other side of the chuck body 31, a driving slide rod 36 penetrates through. The driving slide rod 36 is slidably connected to the chuck body 31. One end of the driving slide rod 36 is connected to the three movable blocks 32 (it should be noted that the driving slide rod 36 is not fixedly connected to the three movable blocks 32. The two can be movably connected, and it is required that the movable blocks 32 can move in an inclined direction). The other end of the driving slide rod 36 is fixed with a connecting bolt 37. The connecting bolt 37 is pulled by a hydraulic pull rod. The working principle of the hydraulic pull rod is to drive the piston to move through the pressure in the hydraulic system, so as to make the hydraulic pull rod stretch and retract, realizing the transmission and adjustment of force.

[0052] Inside the movable block 32 and the first jaw 33, there is a bushing 38. The bushing 38 is fixed at one end of the chuck body 31. One end of the bushing 38 close to the driving slide rod 36 extends into the driving slide rod 36 and is slidably connected to the driving slide rod 36.

[0053] As Figure 5 shown, after one end of the shaft is processed, it is inserted into the bushing 38 and is tightened by the ejector rod 39 at one end inside the bushing 38. The hydraulic pull rod pulls the connecting bolt 37 backward to drive the driving slide rod 36 to move backward, thereby driving the three movable blocks 32 to move. The sliding grooves 35 on the movable blocks 32 move obliquely backward and downward along the fixing bolts 34, thereby driving the first jaws 33 to move obliquely backward and downward. That is, the first jaws 33 move simultaneously in the radial and axial directions of the shaft, so that the first jaws 33 clamp the shaft and lock the shaft backward (the difference between the chuck assembly 3 of the present invention and the existing three-jaw chuck is that: the three-jaw chuck clamps the workpiece by the radial movement of its three movable jaws, and the chuck assembly 3 clamps the shaft simultaneously in the radial and axial directions, and the stability of the shaft is better).

[0054] At the same time, in the present invention, the ejector rod 39 is connected to the inner wall of the bushing 38 through a spring. When the shaft moves backward, it drives the ejector rod 39 to squeeze the spring backward. The elastic force of the spring squeezes the shaft. Therefore, the shaft is fixed in multiple directions including the radial and front-back directions, greatly improving the stability of the shaft and the machining accuracy of the subsequent shaft.

[0055] Furthermore, as Figures 4-6As shown, on the chuck assembly 3 in the lathe two 2, an airtight detection assembly 4 for performing full-process airtight detection in the second step is fixed. The airtight detection assembly 4 includes a fixed ring 41. Three bumps 42 are integrally formed on the fixed ring 41, and the three bumps 42 are distributed in a circular array around the cross-sectional center of the fixed ring 41. Three slots 43 are formed between the three bumps 42. An air source channel 44 that communicates with each other is provided between the fixed ring 41 and each of the three bumps 42;

[0056] The fixed ring 41 is arranged between the bushing 38 of the chuck assembly 3 and the three first jaws 33, and the fixed ring 41 is coaxially fixed with the bushing 38. The three first jaws 33 are respectively inserted into the three slots 43. The inner end faces of the three bumps 42 are all in contact with the outer wall of the shaft. One end of the air source channel 44 extends between the joint surface of the bump 42 and the shaft;

[0057] An air channel that communicates with the air source channel 44 is opened in the bushing 38. The end of the air channel far from the air source channel 44 is connected to an external air source, and a pressure sensor is installed in the path where the air channel is connected to the external air source;

[0058] After the shaft is fixed, the three bumps 42 are in contact with the shaft, and one end of the air source channel 44 is at this joint surface. During detection, air is conveyed into the air source channel 44. When the pressure detected by the pressure sensor increases, it indicates that the airtight detection is qualified (the joint surface is tightly attached without air leakage), which means the shaft is always installed in place, the lathe two 2 works normally, and the stability of the shaft during the processing is maintained. Otherwise, when the airtight detection is unqualified, the lathe two 2 alarms and stops at the same time.

[0059] As Figures 1-3 shown, outside the lathe one 1 and the lathe two 2, there are also a magazine 8, a blanking conveyor 9 and a demagnetizer 10. The magazine 8 and the blanking conveyor 9 are arranged on one side of the lathe one 1, and the demagnetizer 10 is arranged on one side of the manipulator 6. The manipulator 6 grabs the shaft on the magazine 8 and sends it into the lathe one 1 and the lathe two 2 for processing. During processing, the servo motor shaft may obtain magnetism due to effects such as friction and impact. This magnetism will affect the performance of the servo motor, especially in terms of precise positioning and high-speed response. Therefore, the processed servo motor shaft products need to be demagnetized by the demagnetizer 10 and then placed in the blanking conveyor 9 for blanking.

[0060] As Figure 10 shown, the processing of the servo motor shaft of the present invention is divided into two steps, and the two ends of the shaft are processed respectively. The specific processing method is as follows:

[0061] Step one: Process one end of the shaft:

[0062] A1: The manipulator 6 feeds the shaft in the magazine 8 into the three-jaw chuck in the lathe one 1;

[0063] A2: After the lathe 1 is started, the turret in the lathe 1 drives the ejector assembly 5 to move to the shaft, and the shaft is pushed by the ejector block 53, and then the shaft is fixed by the three-jaw chuck;

[0064] A3: The tool performs the following operations on one end of the shaft in sequence: rough turning the end face - rough machining the center hole of the end face - tailstock pushing (the center hole of the top end face) - rough turning the outer diameter - tailstock retracting - finish turning the end face - finish machining the center hole of the end face - tailstock pushing (the center hole of the top end face) - finish machining the outer diameter - tailstock retracting;

[0065] A4: The manipulator 6 takes out the shaft;

[0066] Step Two: Machine the other end of the shaft:

[0067] B1: The manipulator 6 turns around the shaft taken out from the lathe 1, and then feeds the shaft into the chuck assembly 3 in the lathe 2;

[0068] B2: After the lathe 2 is started, the turret in the lathe 2 drives the ejector assembly 5 to move to the shaft, and the shaft is pushed by the ejector block 53, and then the chuck assembly 3 clamps and locks backward;

[0069] B3: After the airtightness test is qualified, the tool performs the following operations on the other end of the shaft in sequence: rough turning the end face - rough machining the center hole of the end face - tailstock pushing (the center hole of the top end face) - rough turning the outer diameter - tailstock retracting - finish turning the end face - finish machining the center hole of the end face - tailstock pushing (the center hole of the top end face) - finish machining the outer diameter - tailstock retracting;

[0070] Meanwhile, the airtightness test is carried out throughout the machining process. When the airtightness test is unqualified, the lathe 2 stops and alarms;

[0071] B4: After the machining is completed, the manipulator 6 takes out the servo motor shaft product;

[0072] B5: The servo motor shaft product is demagnetized by the demagnetizer 10 and then placed in the blanking conveyor 9 for blanking.

[0073] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A servo motor shaft processing method, characterized in that: The specific steps are as follows: Step 1: Process one end of the shaft: A1: The robot (6) feeds the shaft into the three-jaw chuck in lathe one (1); A2: After the lathe 1 (1) is started, the turret in the lathe 1 (1) drives the ejector assembly (5) to move to the shaft to eject the material, and then the three-jaw chuck fixes the shaft; A3: The tool performs rough turning of the end face, rough machining of the end face center hole, rough turning of the outer diameter, fine turning of the end face, fine machining of the end face center hole, and fine machining of the outer diameter on one end of the shaft in sequence; A4: The manipulator (6) removes the shaft; Step 2: Process the other end of the shaft: B1: The robot (6) turns the shaft around and feeds it to the chuck assembly (3) in the lathe 2 (2); B2: After the lathe 2 (2) is started, the turret in the lathe 2 (2) drives the ejector assembly (5) to move to the shaft to eject the material, and then the chuck assembly (3) fixes the shaft; B3: After the airtightness test is qualified, the tool will perform rough turning of the end face, rough machining of the end face center hole, rough turning of the outer diameter, fine turning of the end face, fine machining of the end face center hole, and fine machining of the outer diameter on the other end of the shaft in sequence; At the same time, the whole process of processing is subject to airtightness testing. If the airtightness test fails, lathe 2 (2) stops and alarms. B4: Processing is completed, and the robot (6) takes out the servo motor shaft product; The servo motor shaft processing system comprises a lathe 1 (1) and a lathe 2 (2), wherein a three-jaw chuck for fixing the shaft is fixed on one side of the inner wall of the lathe 1 (1), and a chuck assembly (3) for fixing the shaft is fixed on one side of the inner wall of the lathe 2 (2); The chuck assembly (3) comprises a chuck body (31), three movable blocks (32) are arranged on one side of the inside of the chuck body (31), and a clamping jaw (33) is fixed on the inside of each of the three movable blocks (32). The three clamping jaws (33) are arranged on the outer wall of the shaft, and three fixing bolts (34) are fixed on the outer wall of the chuck body (31). The outer walls of the three movable blocks (32) are provided with inclined sliding grooves (35) at positions corresponding to the fixing bolts (34). The bottom of the fixing bolt (34) is slidably arranged inside the corresponding sliding groove (35), so that the movable block (32) drives the clamping jaw (33) to move obliquely along the fixing bolt (34), that is, the clamping jaw (33) moves simultaneously in the radial direction and the axial direction, so as to clamp the shaft and lock it backwards. A driving slide rod (36) is provided through the other side of the chuck body (31), and the driving slide rod (36) is slidably connected to the chuck body (31), one end of the driving slide rod (36) is connected to the three movable blocks (32), and a connecting bolt (37) is fixed to the other end of the driving slide rod (36), and the connecting bolt (37) is pulled by a hydraulic pull rod; A shaft sleeve (38) is provided inside the movable block (32) and the first clamping jaw (33), and the shaft sleeve (38) is fixed to one end of the chuck body (31), and one end of the shaft sleeve (38) close to the driving slide rod (36) extends into the driving slide rod (36) and is slidably connected with the driving slide rod (36), the shaft is inserted into the shaft sleeve (38) and is pressed by a push rod (39) at one end of the shaft sleeve (38), and the push rod (39) is connected to the inner wall of the shaft sleeve (38) by a spring, and when the shaft moves backward, the push rod (39) is driven to press the spring backward, and the elastic force of the spring presses the shaft, so that the shaft is simultaneously fixed in multiple radial and front-back directions, which greatly improves the stability of the shaft and improves the subsequent machining accuracy of the shaft; The servo motor shaft processing system also includes a manipulator (6) for feeding materials and arranged outside lathe one (1) and lathe two (2), the manipulator (6) is provided with a manipulator clamping claw module (7), the manipulator clamping claw module (7) includes a connecting frame (71) rotatably connected to the manipulator (6), and the connecting frame (71) is provided with two groups of clamping claws (72), the first group of clamping claws (72) clamps the semi-finished shaft processed in lathe one (1), and then the empty second group of clamping claws (72) first takes out the finished shaft in lathe two (2), and then the connecting frame (71) is rotated to insert the semi-finished shaft on the first group of clamping claws (72) into the chuck assembly (3) of lathe two (2), so that the shaft in lathe two (2) can be taken in and put in continuously, thereby improving the processing efficiency; An airtight detection component (4) for performing airtight detection in step 2 is fixed on the chuck component (3), the airtight detection component (4) comprising a fixed ring (41), three protrusions (42) integrally formed on the fixed ring (41), three slots (43) formed between the three protrusions (42), and air source channels (44) communicating with each other are provided between the fixed ring (41) and the three protrusions (42).

2. A servo motor shaft processing method according to claim 1, characterized in that: The fixed ring (41) is arranged between the shaft sleeve (38) and the three clamping jaws (33) of the chuck assembly (3), and the fixed ring (41) and the shaft sleeve (38) are coaxially fixed, and the three clamping jaws (33) are respectively inserted into the three slots (43); The inner end surfaces of the three protrusions (42) are in contact with the outer wall of the shaft, and one end of the air source channel (44) extends between the contact surfaces of the protrusions (42) and the shaft; An air channel communicating with the air source channel (44) is provided in the shaft sleeve (38), and one end of the air channel away from the air source channel (44) is connected to an external air source, and an air pressure sensor is installed in the passage connecting the air channel and the external air source. During detection, the air source is delivered into the air source channel (44). When the air pressure of the air pressure sensor increases, indicating that the air tightness test is qualified, it indicates that the shaft is installed in place and the lathe two (2) is working normally. On the contrary, if the air tightness test is unqualified, the lathe two (2) will alarm and stop at the same time.

3. A servo motor shaft processing method according to claim 1, characterized in that: The other side of the inner wall of the lathe 1 (1) and the lathe 2 (2) is provided with a turret, and in addition to the tool, a material ejection assembly (5) is also installed on the turret; The ejector assembly (5) comprises a hollow outer rod (51), a sliding inner rod (52) being slidably disposed in the hollow outer rod (51), one end of the sliding inner rod (52) extending out of one end of the hollow outer rod (51) and being fixed with an ejector block (53), and the other end of the sliding inner rod (52) being connected to the inner wall of the hollow outer rod (51) via a connecting spring (54).

4. A servo motor shaft processing method according to claim 1, characterized in that: The servo motor shaft processing system further comprises a material bin (8), a material discharge conveyor (9) and a demagnetizing machine (10). The material bin (8) and the material discharge conveyor (9) are arranged on one side of a lathe (1), and the demagnetizing machine (10) is arranged on one side of a manipulator (6). The manipulator (6) grabs the shaft on the material bin (8) and then sends it to the lathe (1) and the lathe (2) for processing. The processed servo motor shaft product is demagnetized by the demagnetizing machine (10) and then placed in the material discharge conveyor (9) for unloading.

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