A motor rotor turning device

Abstract

The application belongs to the technical field of rotor turning, and particularly relates to a motor rotor turning device, which comprises a turning bed body, the turning bed body comprises a main shaft box and a sliding frame one, the main shaft box is provided with a three-jaw chuck for auxiliary clamping and a fixed top pin, the sliding frame one is provided with a tool holder for turning and a top plate, the top plate comprises a movable top pin, at least two fixing blocks are arranged on the movable top pin, a conical block is arranged between the fixing blocks, and the inner wall of the fixing block and the outer surface of the conical block are always attached. Through the cooperative action of the conical block driving the radial expansion of the fixing block and the axial limiting of the sealing plate, the tool-free rapid installation of the movable top pin is realized, and radial and axial double locking is formed. In the turning process, the movable top pin will not produce any slight displacement in any direction due to cutting force, the rotor axial movement problem caused by vibration loosening or gap fit in the traditional bolt pressing mode is eliminated, and the clamping stability is significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of rotor turning technology, and in particular relates to a motor rotor turning device. Background Technology

[0002] The motor rotor is an important component of the motor, and its outer diameter accuracy directly affects the motor's operating performance. Turning is a key process for precision machining of the motor rotor's outer diameter. The motor rotor turning device is a professional machine tool used in the motor manufacturing industry to perform high-precision cutting machining on the outer diameter of the motor rotor and key components.

[0003] In practical applications, some motor rotor turning devices typically use a combination of fixed and movable ejector pins to clamp both ends of the rotor. The movable ejector pin is installed in the clamping frame on the slide and is fixed by bolts or pressure plates, which is mostly a clearance fit. During turning, the axial cutting force can easily cause the ejector pin to make a small displacement, resulting in axial movement of the rotor, causing tool deflection and affecting machining accuracy. Summary of the Invention

[0004] The purpose of this invention is to address the problems mentioned in the background section by providing a motor rotor turning apparatus.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions:

[0006] A motor rotor turning device includes a turning bed, the turning bed including a spindle box and a carriage, the spindle box being provided with an auxiliary clamping three-jaw chuck and a fixed center, and the carriage being provided with a tool holder for turning.

[0007] The top plate includes a movable ejector pin, which has at least two fixed blocks. A conical block is provided between the fixed blocks. The inner wall of the fixed block and the outer surface of the conical block are always in contact. The conical block moves away from the movable ejector pin, which can drive the fixed blocks to move away from each other, thus fixing the movable ejector pin on the device. The movable ejector pin cooperates with the fixed ejector pin to clamp the motor rotor.

[0008] Preferably, a second slide is fixed on the turning machine body, and a clamping frame is provided on the second slide. The clamping frame drives the movable ejector pin to move and clamp the motor rotor.

[0009] Preferably, an electric telescopic rod is fixed on the movable ejector pin, and the telescopic end of the electric telescopic rod is fixedly connected to the conical block. The telescopic extension and retraction of the electric telescopic rod will drive the conical block to move. A pressure housing is provided inside the conical block, and the fixed block is slidably connected to the movable ejector pin.

[0010] Preferably, a sealing plate is fixed at the opening of the clamping frame, the opening diameter of the sealing plate is smaller than the inner wall diameter of the clamping frame, and the thickness of the sealing plate is the same as the distance from the fixed block to the movable ejector pin.

[0011] Preferably, a wear-resistant plate is slidably connected to the outer surface of the fixing block, a rectangular groove is provided on the fixing block, and a connecting rod is rotatably connected in the rectangular groove. The two ends of the connecting rod are rotatably connected to the wear-resistant plate and the pressure shell, respectively.

[0012] Preferably, the conical block has an arc-shaped groove, and a pressure sensor is fixed at the bottom of the arc-shaped groove.

[0013] Preferably, the pressurized housing is filled with hydraulic oil, and a square plate is slidably connected inside the pressurized housing. At least one arc-shaped hole is opened on the outer surface of the square plate, and an arc plate is elastically connected inside the arc-shaped hole. At least one arc-shaped hole is also opened on the square plate. A rectangular plate is rotatably connected to the end of the square plate away from the arc plate, and the rectangular plate is fixedly connected to the pressure sensor.

[0014] Preferably, the assembly further includes a chip blowing component, which includes two bases fixed to the slide two, an electric telescopic component fixed on the two bases, a support frame fixed to the telescopic end of the electric telescopic component, at least one cleaning hole on the outer surface of the support frame, a connecting component fixed on the support frame, the output end of the connecting component being fixedly connected to the support frame, and an air blowing pipe rotatably connected between the two support frames.

[0015] Preferably, two sealing tubes are slidably connected inside the air blowing pipe. An air outlet is opened on the outer surface of the sealing tube, and an air blowing hole is opened on the outer surface of the air blowing pipe. A filter block is provided inside the air blowing hole. An elastic element is provided between the sealing tube and the inner wall of the air blowing pipe. A connecting pipe is fixedly connected to the air blowing pipe.

[0016] Preferably, both the connecting pipe and the connecting component are connected to the external air pump via flexible hoses.

[0017] Compared with existing technologies, the advantages of this electric motor rotor turning device are:

[0018] 1. This invention achieves tool-free rapid installation of the movable ejector pin through the synergistic effect of the radial expansion of the fixed block driven by the conical block and the axial limiting of the sealing plate. At the same time, it forms a double locking system of radial and axial locking. During the turning process, the movable ejector pin will not have any slight displacement in any direction due to the cutting force, eliminating the problem of rotor axial movement caused by vibration loosening or clearance fit in the traditional bolt tightening method, and significantly improving clamping stability.

[0019] 2. This invention utilizes the axial cutting force during turning to drive the fixed block to generate a reverse movement tendency. Through the connecting rod and the hydraulic one-way locking structure in the pressure housing, the cutting force is automatically converted into an additional axial clamping force, so that the clamping force and the real-time cutting load form a positive closed loop. The greater the cutting force, the greater the additional clamping force provided by the device. It can be adaptively adjusted without the need for sensors or external control. Since this device is suitable for turning large rotors, the adaptive clamping force can prevent the large rotor from vibrating due to the feed of the cutting tool during turning. At the same time, it keeps the large rotor coaxial with the fixed and movable ejector pins, maintaining the stability of the turning process.

[0020] 3. By setting a pressure sensor, the present invention can directly acquire the pressure signal reflecting the magnitude of the axial cutting force, and then determine whether the tool is worn and whether the cutting parameters are reasonable based on the signal. When the pressure value continuously exceeds the set threshold, it will automatically prompt to replace the cutting tool, so as to avoid the decline in machining quality or equipment damage caused by tool dulling. Attached Figure Description

[0021] Figure 1 This is a frontal schematic diagram of the overall structure of a motor rotor turning device provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the overall back structure of a motor rotor turning device provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the turning bed structure of a motor rotor turning device provided by the present invention;

[0024] Figure 4 This is a schematic diagram of the top plate structure of a motor rotor turning device provided by the present invention;

[0025] Figure 5 This invention provides Figure 4 A magnified schematic diagram of the structure at point A in the diagram.

[0026] Figure 6 This is a schematic diagram of the fixing block structure of a motor rotor turning device provided by the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the conical block of a motor rotor turning device provided by the present invention;

[0028] Figure 8 This is a schematic diagram of the internal structure of the pressure housing of a motor rotor turning device provided by the present invention;

[0029] Figure 9 This is a schematic diagram of the chip blowing assembly structure of a motor rotor turning device provided by the present invention;

[0030] Figure 10 This is a schematic diagram of the internal structure of the air blowing pipe of a motor rotor turning device provided by the present invention.

[0031] In the diagram: 1. Turning bed; 2. Top plate; 3. Chip blowing assembly; 11. Spindle box; 12. Three-jaw chuck; 13. Fixed ejector pin; 14. Carriage 1; 15. Tool post; 16. Carriage 2; 17. Clamping frame; 21. Movable ejector pin; 22. Electric telescopic rod; 23. Conical block; 24. Fixed block; 25. Pressure housing; 231. Arc groove; 232. Pressure sensor; 241. Wear-resistant plate; 242. Rectangular... 243. Groove; 251. Connecting rod; 252. Square plate; 253. Arc hole one; 254. Arc hole two; 255. Rectangular plate; 31. Base; 32. Electric telescopic component; 33. Support frame; 34. Cleaning hole; 35. Connecting component; 36. Air blowing pipe; 361. Sealing pipe; 362. Air outlet one; 363. Air blowing hole; 364. Filter block; 365. Elastic component; 366. Connecting pipe. Detailed Implementation

[0032] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0033] Example: Refer to Figures 1 to 10 A motor rotor turning device includes a turning bed 1, which includes a spindle box 11 and a slide 14. The spindle box 11 is provided with a three-jaw chuck 12 for auxiliary clamping and a fixed ejector pin 13. The slide 14 is provided with a tool holder 15 for turning. A second slide 16 is fixed on the turning bed 1. The second slide 16 is provided with a clamping frame 17. The clamping frame 17 drives the movable ejector pin 21 to move and clamp the motor rotor.

[0034] The top plate 2 includes a movable ejector pin 21. The movable ejector pin 21 is provided with at least two fixing blocks 24. A conical block 23 is provided between the fixing blocks 24. The inner wall of the fixing block 24 is always in contact with the outer surface of the conical block 23. The conical block 23 moves away from the movable ejector pin 21, which can drive the fixing blocks 24 to move away from each other, thus fixing the movable ejector pin 21 on the device. The movable ejector pin 21 cooperates with the fixed ejector pin 13 to clamp the motor rotor.

[0035] To further explain, such as Figure 4 and Figure 5 As shown, an electric telescopic rod 22 is fixed on the movable ejector pin 21. The telescopic end of the electric telescopic rod 22 is fixedly connected to the conical block 23. The telescopic extension of the electric telescopic rod 22 will drive the conical block 23 to move. A pressure housing 25 is provided inside the conical block 23. The fixed block 24 is slidably connected to the movable ejector pin 21. A sealing plate is fixed at the opening of the clamping frame 17. The opening diameter of the sealing plate is smaller than the inner wall diameter of the clamping frame 17. The thickness of the sealing plate is the same as the distance from the fixed block 24 to the movable ejector pin 21.

[0036] Specifically, before turning, the fixed ejector pin 13 needs to be clamped by the three-jaw chuck 12. Then, the conical block 23 and the fixed block 24 are placed in the clamping frame 17. At this time, the movable ejector pin 21 is fixedly installed. The electric telescopic rod 22 is activated to extend, pushing the conical block 23 away from the top plate 2. During the movement of the conical block 23, it will push multiple fixed blocks 24 to move away from each other. The fixed blocks 24 will drive the wear-resistant plate 241 to move simultaneously until the wear-resistant plate 241 contacts the inner wall of the clamping frame 17. Then, the electric telescopic rod 22 continues to extend, causing the top plate 2 to be subjected to a reverse force. The sealing plate at the opening of the clamping frame 17 will hold the fixed block 24 in place, keeping the top plate 2 stationary until the conical block 23 can no longer extend. At this point, the movable ejector pin 21 used to clamp the motor rotor is fixed on the clamping frame 17. Then, the two electric telescopic components 32 are activated to extend and drive the two support frames 33 to move upward. Then, the motor rotor is manually placed on it. The servo system inside the turning machine body 1 will drive the clamping frame 17 to move the movable ejector pin 21 toward the fixed ejector pin 13 until the fixed ejector pin 13 and the movable ejector pin 21 simultaneously contact the motor rotor, thus clamping the motor rotor.

[0037] To elaborate further, such as Figure 6 As shown, a wear-resistant plate 241 is slidably connected to the outer surface of the fixing block 24, and a rectangular groove 242 is provided on the fixing block 24. A connecting rod 243 is rotatably connected in the rectangular groove 242, and the two ends of the connecting rod 243 are rotatably connected to the wear-resistant plate 241 and the pressure shell 25, respectively.

[0038] To further explain, such as Figure 7 As shown, an arc-shaped groove 231 is provided on the conical block 23, and a pressure sensor 232 is fixed at the bottom of the arc-shaped groove 231;

[0039] Specifically, during the turning process, the impact force between the cutting tool and the motor rotor is transmitted through the top plate 2 to multiple fixed blocks 24. The fixed blocks 24 and the electric telescopic rod 22 jointly bear the impact force generated during turning. The impact force acting on the fixed blocks 24 causes them to tend to move away from the top plate 2. Due to the friction between the wear-resistant plate 241 and the inner wall of the clamping frame 17, the wear-resistant plate 241 tends to move closer to the top plate 2. The connecting rod 243 causes the conical block 23 to move away from the top plate 2. The device provides axial support to the motor rotor by clamping it with the movable ejector pin 21, directly counteracting the cutting force and solving the tool deflection problem. At the same time, the device can adaptively adjust the clamping strength of the device on the motor rotor according to the force generated during turning. Since this device is suitable for turning large rotors, the adaptive clamping force can prevent the large rotor from vibrating due to the feed of the cutting tool during turning, and at the same time keep the large rotor coaxial with the fixed ejector pin 13 and the movable ejector pin 21, maintaining the stability of the turning process.

[0040] To elaborate further, such as Figure 8 As shown, the pressure housing 25 is filled with hydraulic oil, and a square plate 251 is slidably connected inside the pressure housing 25. At least one arc-shaped hole 252 is opened on the outer surface of the square plate 251, and an arc plate 253 is elastically connected inside the arc-shaped hole 252. At least one arc-shaped hole 254 is also opened on the square plate 251. A rectangular plate 255 is rotatably connected to the end of the square plate 251 away from the arc plate 253. The rectangular plate 255 is fixedly connected to the pressure sensor 232.

[0041] It should be noted that the pressure housing 25 can be regarded as a one-way telescopic element. When the conical block 23 moves away from the top plate 2, the hydraulic oil in the pressure housing 25 will flow in the arc-shaped hole 252, thus not affecting the movement of the conical block 23. When the conical block 23 wants to shorten, the hydraulic oil cannot flow because the arc plate 253 fits against the arc-shaped hole 252, thus achieving the purpose of sealing. While not affecting the movement of the conical block 23, the wear-resistant plate 241 can apply force to the conical block 23 through the connecting rod 243 to ensure that the device can operate normally. When the conical block 23 needs to be reset, it can be reset by rotating the rectangular plate 255 through the electromagnetic bearing.

[0042] To further explain, such as Figure 9As shown, it also includes a chip blowing assembly 3, which includes two bases 31 fixed on the slide 16. An electric telescopic member 32 is fixed on the two bases 31. A support frame 33 is fixed to the telescopic end of the electric telescopic member 32. At least one cleaning hole 34 is opened on the outer surface of the support frame 33. A connecting member 35 is fixed on the support frame 33. The output end of the connecting member 35 is fixedly connected to the support frame 33. An air blowing pipe 36 is rotatably connected between the two support frames 33.

[0043] To elaborate further, such as Figure 10 As shown, two sealing tubes 361 are slidably connected inside the air blowing pipe 36. An air outlet 362 is opened on the outer surface of the sealing tube 361. An air blowing hole 363 is opened on the outer surface of the air blowing pipe 36. A filter block 364 is provided inside the air blowing hole 363. An elastic element 365 is provided between the sealing tube 361 and the inner wall of the air blowing pipe 36. A connecting pipe 366 is fixedly connected to the air blowing pipe 36. Both the connecting pipe 366 and the connecting element 35 are connected to an external air pump by a flexible hose.

[0044] It should be noted that when the external air pump is working, the air drawn in will enter the support frame 33 through the connecting part 35, and then be blown out through the cleaning hole 34 to clean the impurities on the surface of the motor rotor, so that the motor rotor can be placed horizontally on the support frame 33 for convenient subsequent clamping. Since there is an electromagnetic bearing at the connection between the air blowing pipe 36 and the support frame 33, the air blowing pipe 36 can be rotated through the electromagnetic bearing, so that the air blowing hole 363 on the air blowing pipe 36 for air blowing is facing the turning position of the motor rotor. At this time, the tool holder 15 can be started to turn the clamped motor rotor. During the turning process, the external air pump will continuously draw in air, and the air will flow from the connecting pipe 366 into the air blowing pipe 36, and then push the two filter blocks 364 to move away from each other until the air outlet 362 and the air blowing hole 363 coincide, so that the air is sprayed on the turning position of the motor rotor, which can cool down and clean up the debris generated during turning.

[0045] The functional principle of this invention can be explained through the following operation: When the movable ejector pin 21 is placed inside the clamping frame 17, the rear end of the movable ejector pin 21 is connected to the fixed end of the electric telescopic rod 22. The telescopic end of the electric telescopic rod 22 is fixedly connected to the conical block 23. When the electric telescopic rod 22 is not activated, it is in a retracted state. The conical block 23 is located between multiple fixed blocks 24. The fixed blocks 24 are slidably connected in the radial groove of the movable ejector pin 21. The inner wall of the fixed block 24 is an inclined surface, which always keeps in contact with the outer conical surface of the conical block 23. When the electric telescopic rod 22 is activated to extend, the telescopic end of the electric telescopic rod 22 pushes the conical block 23 to move away from the movable ejector pin 21. During the movement, the outer conical surface of the conical block 23 presses against the inner inclined surface of each fixed block 24, forcing all fixed blocks 24 to slide radially away from each other. Wear-resistant plate 241 is slidably connected to the surface. Wear-resistant plate 241 moves outward together with fixed block 24. When wear-resistant plate 241 contacts and presses against the inner wall of clamping frame 17, fixed block 24 can no longer expand outward. At this time, electric telescopic rod 22 continues to extend. The reverse force on tapered block 23 is transmitted to clamping frame 17 through fixed block 24. A sealing plate is fixed at the opening of clamping frame 17. The opening diameter of the sealing plate is smaller than the inner wall diameter of clamping frame 17, and the thickness of the sealing plate is equal to the distance from fixed block 24 to end face of movable ejector pin 21. After fixed block 24 is blocked by inner wall in the radial direction, sealing plate restricts movable ejector pin 21 from retracting in the axial direction, thereby firmly locking movable ejector pin 21 on clamping frame 17. After locking, the axis of movable ejector pin 21 coincides with the spindle axis of turning machine body 1, providing a precise positioning reference for subsequent clamping of motor rotor.

[0046] Before the motor rotor is placed, two bases 31 are fixed to the slide 16. Each base 31 is fixed with an electric telescopic component 32. When activated, both electric telescopic components 32 extend simultaneously. A support frame 33 is fixed to the telescopic end of the electric telescopic component 32. The support frame 33 moves upward as the electric telescopic component 32 extends. The upper surface of the two support frames 33 is used to support the motor rotor. The operator places the motor rotor horizontally between the two support frames 33. At this time, an external air pump is activated. The air pump is connected to the connecting member 35 through a hose. The connecting member 35 is fixed to the support frame 33 and communicates with the internal channel of the support frame 33. The outer surface of the support frame 33 has multiple cleaning holes 34. The air drawn by the air pump enters the interior of the support frame 33 through the connecting member 35. Then, it sprays outward from the cleaning hole 34 to blow away iron filings, dust and other impurities from the surface of the motor rotor. This cleaning step ensures that the rotor surface is clean and avoids impurities affecting the clamping accuracy. After cleaning, the servo system in the turning machine body 1 drives the slide 2 16 to move along the guide rail. The clamping frame 17 is fixed on the slide 2 16. The clamping frame 17 drives the locked movable ejector pin 21 to move towards the fixed ejector pin 13. The fixed ejector pin 13 has been clamped by the three-jaw chuck 12. The three-jaw chuck 12 is installed on the spindle box 11. The end face of the movable ejector pin 21 and the end face of the fixed ejector pin 13 contact the two ends of the motor rotor respectively, clamping the rotor axially. After clamping, the electric telescopic component 32 retracts, driving the support frame 33 to move downward and return to the initial position to avoid interfering with subsequent turning.

[0047] When the turning process begins, the slide 14 drives the tool holder 15 to move. The tool on the tool holder 15 contacts the outer circle of the motor rotor to cut. During the cutting process, the tool applies an axial cutting force to the rotor. This axial force is transmitted to the movable ejector pin 21 through the rotor. The movable ejector pin 21 is subjected to a reaction force toward the fixed ejector pin 13. This force tends to push the movable ejector pin 21 away from the fixed ejector pin 13. Since the movable ejector pin 21 is pressed against the inner wall of the clamping frame 17 by the fixed block 24, there is static friction between the wear plate 241 of the fixed block 24 and the inner wall of the clamping frame 17. When the axial force increases, the movable ejector pin 21 tends to have a slight displacement. The fixed block 24 is pushed by the movable ejector pin 21. This push causes the fixed block 24 to tend to move away from the movable ejector pin 21. However, the friction between the wear plate 241 of the fixed block 24 and the inner wall prevents this movement. Instead, the fixed block 24 tends to move in the opposite direction toward the movable ejector pin 21.

[0048] A rectangular groove 242 is provided on the fixed block 24. A connecting rod 243 is rotatably connected within the rectangular groove 242. One end of the connecting rod 243 is rotatably connected to the fixed block 24, and the other end is rotatably connected to the conical block 23. The slight tendency of the fixed block 24 to move towards the movable ejector pin 21 is transmitted through the connecting rod 243 to pull the conical block 23, causing the conical block 23 to tend to move closer to the movable ejector pin 21. A pressure housing 25 is provided inside the conical block 23. The pressure housing 25 is filled with hydraulic oil. A square plate 251 is slidably connected inside the pressure housing 25. At least one arc-shaped hole 252 is provided on the outer surface of the square plate 251. An arc-shaped plate 253 is elastically connected inside the arc-shaped hole 252. Under the action of elastic force, the arc-shaped hole 252 is normally closed. At least one arc-shaped hole 254 is also provided on the square plate 251. A rectangular plate 255 is rotatably connected to the end of the square plate 251 away from the arc-shaped plate 253. The rectangular plate 255 is fixedly connected to the pressure sensor 232 at the bottom of the arc-shaped groove 231 opened on the conical block 23. When the conical block 23 is pulled by the connecting rod 243 to move towards the movable ejector pin 21, the conical block 23 drives the rectangular plate 255 to move, and the rectangular plate 255 pushes the square plate 251 to slide inside the pressure housing 25.

[0049] Because the arc-shaped plate 253 closes the arc-shaped hole 252, hydraulic oil cannot flow from one side of the square plate 251 to the other. The movement of the square plate 251 is hindered by the hydraulic oil, forming a one-way lock. This locking action converts the tension of the connecting rod 243 into a reaction force, which is transmitted back to the movable ejector pin 21 through the conical block 23 and the fixed block 24, enhancing the axial clamping force of the movable ejector pin 21 on the motor rotor. The greater the cutting force, the stronger the reverse movement tendency of the fixed block 24, and the greater the tension of the connecting rod 243 on the conical block 23. The reaction force generated by the hydraulic lock is thus increased. The larger the force, the greater the clamping force of the movable ejector pin 21, which adaptively increases the clamping force and suppresses the axial tool deflection phenomenon of the rotor when the tool is pushed forward. It should be noted that this device is suitable for turning large rotors, such as rotors with a diameter of more than 300 mm on the market. By using adaptive clamping force, the large rotor can be prevented from vibrating due to the feed of the cutting tool when it is being turned. In addition, the adaptive clamping force can also ensure that the rotor remains coaxial with the fixed ejector pin 13 and the movable ejector pin 21 when it is being turned, thus maintaining the stability of the turning process.

[0050] During the turning process, an external air pump continuously operates, and gas is connected to a connecting pipe 366 via a hose. The connecting pipe 366 is fixedly connected to an air blowing pipe 36. Two sealing pipes 361 are slidably connected inside the air blowing pipe 36. An air outlet 362 is provided on the outer surface of each sealing pipe 361, and an air blowing hole 363 is provided on the outer surface of the air blowing pipe 36. A filter block 364 is provided inside the air blowing hole 363. An elastic element 365 is provided between the sealing pipe 361 and the inner wall of the air blowing pipe 36. When there is no air pressure, the elastic element 365 keeps the sealing pipe 361 in a position that closes the air blowing hole 363. When the air pump supplies air, the gas enters the air blowing pipe 36, and the air pressure pushes the two sealing pipes 361 to move away from each other, compressing the elastic element 365. 5. Until the air outlet 362 on the sealing tube 361 coincides with the air outlet 363 on the air blowing tube 36, the gas is ejected from the air outlet 363. After being filtered by the filter block 364, it is blown towards the turning position of the motor rotor. The ejected gas carries away the heat generated by turning, reduces the temperature of the tool and rotor, and blows the chips away from the machining area to prevent chip accumulation from affecting the surface quality. An electromagnetic bearing is provided at the connection between the air blowing tube 36 and the support frame 33. The electromagnetic bearing can drive the air blowing tube 36 to rotate around its own axis and adjust the direction of the air outlet 363 so that the gas is always aligned with the contact point between the tool and the rotor. The pressure sensor 232 detects the force generated during turning in real time. When the force is large, it indicates that the cutting tool needs to be replaced.

[0051] The above description is only a preferred 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 within the protection scope of the present invention.

Claims

1. A motor rotor turning device, comprising a turning bed (1), characterized in that: The turning machine body (1) includes a spindle box (11) and a slide (14). The spindle box (11) is provided with an auxiliary clamping three-jaw chuck (12) and a fixed ejector (13). The slide (14) is provided with a tool holder (15) for turning. The top plate (2) includes a movable ejector pin (21). The movable ejector pin (21) is provided with at least two fixed blocks (24). A conical block (23) is provided between the fixed blocks (24). The inner wall of the fixed block (24) is always in contact with the outer surface of the conical block (23). The conical block (23) moves away from the movable ejector pin (21), which can drive the fixed blocks (24) to move away from each other, thereby fixing the movable ejector pin (21) on the device. The movable ejector pin (21) cooperates with the fixed ejector pin (13) to clamp the motor rotor.

2. The motor rotor turning device according to claim 1, characterized in that, A slide two (16) is fixed on the turning machine body (1), and a clamping frame (17) is provided on the slide two (16). The clamping frame (17) drives the movable ejector pin (21) to move and clamp the motor rotor.

3. The motor rotor turning device according to claim 2, characterized in that, An electric telescopic rod (22) is fixed on the movable ejector pin (21). The telescopic end of the electric telescopic rod (22) is fixedly connected to the conical block (23). The telescopic extension of the electric telescopic rod (22) will drive the conical block (23) to move. A pressure housing (25) is provided inside the conical block (23). The fixed block (24) is slidably connected to the movable ejector pin (21).

4. The motor rotor turning device according to claim 3, characterized in that, A sealing plate is fixed at the opening of the clamping frame (17). The opening diameter of the sealing plate is smaller than the inner wall diameter of the clamping frame (17). The thickness of the sealing plate is the same as the distance from the fixed block (24) to the movable ejector pin (21).

5. The motor rotor turning device according to claim 3, characterized in that, The outer surface of the fixing block (24) is slidably connected to a wear-resistant plate (241). A rectangular groove (242) is provided on the fixing block (24). A connecting rod (243) is rotatably connected in the rectangular groove (242). The two ends of the connecting rod (243) are rotatably connected to the wear-resistant plate (241) and the pressure shell (25) respectively.

6. The motor rotor turning device according to claim 3, characterized in that, An arc-shaped groove (231) is provided on the conical block (23), and a pressure sensor (232) is fixed at the bottom of the arc-shaped groove (231).

7. The motor rotor turning device according to claim 6, characterized in that, The pressurized housing (25) is filled with hydraulic oil. A square plate (251) is slidably connected inside the pressurized housing (25). At least one arc-shaped hole (252) is opened on the outer surface of the square plate (251). An arc-shaped plate (253) is elastically connected inside the arc-shaped hole (252). At least one arc-shaped hole (254) is also opened on the square plate (251). A rectangular plate (255) is rotatably connected to one end of the square plate (251) away from the arc-shaped plate (253). The rectangular plate (255) is fixedly connected to the pressure sensor (232).

8. The motor rotor turning device according to claim 2 further includes a chip blowing assembly (3), characterized in that, The chip blowing assembly (3) includes two bases (31) fixed on the slide (16). An electric telescopic component (32) is fixed on the two bases (31). A support frame (33) is fixed to the telescopic end of the electric telescopic component (32). At least one cleaning hole (34) is opened on the outer surface of the support frame (33). A connecting component (35) is fixed on the support frame (33). The output end of the connecting component (35) is fixedly connected to the support frame (33). An air blowing pipe (36) is rotatably connected between the two support frames (33).

9. The motor rotor turning device according to claim 8, characterized in that, Two sealing tubes (361) are slidably connected inside the air blowing pipe (36). An air outlet hole (362) is opened on the outer surface of the sealing tube (361). An air blowing hole (363) is opened on the outer surface of the air blowing pipe (36). A filter block (364) is provided inside the air blowing hole (363). An elastic element (365) is provided between the sealing tube (361) and the inner wall of the air blowing pipe (36). A connecting pipe (366) is fixedly connected to the air blowing pipe (36).

10. A motor rotor turning device according to claim 9, characterized in that, Both the connecting pipe (366) and the connecting piece (35) are connected to the external air pump via flexible hoses.

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