Stator lining tool and use method thereof

Abstract

The invention discloses a stator lining tool and a using method thereof, and belongs to the technical field of motor production and manufacturing, the stator lining tool comprises a supporting rod flange plate and an expansion sleeve, the supporting rod flange plate comprises a flange part and a supporting rod part, the expansion sleeve is arranged at the end, away from the flange part, of the supporting rod part in a sleeving mode, and the interior of the supporting rod flange plate is hollow; one end of the pull rod is provided with a tension disc which is connected with the end, away from the flange part, of the expansion sleeve in a matched mode. The using method comprises the following steps that S1, the expansion sleeve is arranged on the supporting rod part of the supporting rod flange plate in a sleeving mode, and then the pull rod is tightened so that the tension disc can be completely embedded into the containing groove of the expansion sleeve; s2, the adjusting piece is installed in a limiting groove, a machine tool is started to pull a pull rod, the expansion sleeve is in a tensioned expansion state, and then the redundant size on the surface of the adjusting piece is turned off in the circumferential direction of the expansion sleeve; and S3, the detection tool is installed on the turned adjusting sheet, a machine tool is started to pull the pull rod, and the pressure between the adjusting sheet and the pressure measuring groove is detected until the pressure error meets the expected value.

Description

Technical Field

[0001] The invention relates to a stator inner diameter detection tool, and more specifically, to a stator lining tool and a use method thereof. Background Art

[0002] The stator is the core component of the motor. During the production and assembly process of the motor, whether the size parameters of the stator meet the standards determines the performance of the motor. Therefore, it is necessary to strictly measure and verify the dimensional accuracy of the stator product (including the inner diameter size of the stator core, coaxiality and other parameters), mechanical properties, etc., to ensure that the windings can be reasonably arranged in the stator core, to ensure that the stator can meet the production needs and ensure the performance requirements of the motor.

[0003] For example: Chinese patent announcement number CN115940534A, announcement date April 7, 2023, invention name is a stator core manufacturing tool and stator core manufacturing method, the application discloses a stator core production technology, including a stacking device, the stacking device includes a bottom plate, a top plate and a stacked body located between the bottom plate and the top plate, the stacking device is provided with a bottom limiting structure for radially limiting the bottom of the stacked body and the bottom plate at the bottom of the stacked body, and the stacking device is provided with a top limiting structure for radially limiting the top of the stacked body and the top plate at the top of the stacked body; this scheme can avoid radial deformation of the stator core of large motors during hoisting, turning over and transportation between processes during the manufacturing process, ensure the manufacturing quality of the motor, and improve the qualified rate of large motor manufacturing. However, this scheme does not provide means and solutions to determine whether the stator meets the requirements after production, and cannot guarantee the qualified rate of stator products. Summary of the invention

[0004] The present invention overcomes the lack of detection technology for stator products in the prior art, and provides a stator liner tooling and a method for using the same. This solution can detect the dimensional accuracy and mechanical properties of the stator core, ensure that the stator product meets production requirements, and improve product quality.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a stator liner tooling, including a support rod flange and an expansion sleeve, the support rod flange including a flange portion and a support rod portion, the expansion sleeve is arranged at one end of the support rod portion away from the flange portion, the interior of the support rod flange is hollow, a tie rod is axially passed through the support rod flange, and a tension disk is provided at one end of the tie rod to cooperate with the end of the expansion sleeve away from the flange portion. In this solution, the support rod flange is a mounting component of the expansion sleeve, and the flange portion is used to install the support rod flange on the machine tool. The support rod flange is hollow as a whole, which is convenient for the tie rod to pass through. The tie rod applies tension to the end of the expansion sleeve so that the expansion sleeve can be tightened and expanded. Finally, by detecting the expansion force around the expansion sleeve (detected by applying the detection tooling), the dimensional accuracy and mechanical properties of the stator core can be detected to ensure that the stator core being tested can meet the production requirements and improve the quality of the product.

[0006] Preferably, one end of the expansion sleeve is provided with a receiving groove, the tension disc is embedded in the receiving groove, and the other end of the expansion sleeve and located inside the expansion sleeve is provided with an oblique opening that cooperates with the support rod portion. The receiving groove at one end of the expansion sleeve can cooperate with the tension disc of the tension rod, and the tension disc only applies axial force to the expansion sleeve, and the oblique opening at the other end of the expansion sleeve can cooperate with the corresponding oblique opening on the support rod portion, so that the expansion sleeve can expand radially under the tightening action of the pull rod.

[0007] Preferably, the support rod portion is sleeved with an elastic component, the elastic component is arranged between the flange portion and the expansion sleeve, the elastic component includes a sleeve and an elastic member sleeved outside the sleeve, the sleeve is provided with a limit portion near one end of the expansion sleeve, and the length of the sleeve is less than the distance between the flange portion and the expansion sleeve. The elastic component can reset the tightened expansion sleeve, making it easier to reset the expansion sleeve, and can also provide a certain reverse elastic force for the expansion sleeve, making the force between the expansion sleeve and the sleeve more stable, thereby ensuring that the end face of the expansion sleeve is evenly stressed, that is, the expansion effect of the expansion sleeve is more uniform.

[0008] Preferably, the expansion sleeve is evenly distributed with a plurality of first tension grooves and second tension grooves arranged along the axial direction, the first tension grooves and the second tension grooves are alternately distributed and have opposite openings. The first tension grooves and the second tension grooves can make the expansion sleeve have an expanding effect, and the openings of the first tension grooves and the second tension grooves are opposite to each other, so as to ensure that the expansion sleeve can be expanded evenly.

[0009] Preferably, the opening of the first tension groove faces one side of the flange portion, and the support rod portion is provided with a positioning pin, and the positioning pin is arranged in the first tension groove. The positioning pin on the support rod portion cooperates with the first tension groove in the expansion sleeve, which can limit the circumferential movement of the expansion sleeve during the tensioning process and ensure axial movement.

[0010] Preferably, a limit slot is provided between the first tension slot and the second tension slot, and an adjustment sheet is provided in the limit slot, and the adjustment sheet blocks the first tension slot and the second tension slot on both sides of the circumference. The adjustment sheet can adjust the circumferential size of the expansion sleeve, so that the present solution can be applied to the detection of stator cores of various types and sizes; the size of the adjustment sheet extends to the area where the first tension slot and the second tension slot are located on both sides, so that when the expansion sleeve expands, force can be applied to the adjustment sheet, and all the adjustment sheets can expand evenly to ensure the detection effect.

[0011] Preferably, a detection tool is further included, the detection tool is sleeved on the outside of the expansion sleeve, a pressure measuring groove adapted to the adjustment piece is provided on the inner side of the detection tool, and a pressure sensor is provided between the adjustment piece and the pressure measuring groove. The detection tool is a standard part, which is used to calibrate the detection standard of the stator liner tool. The pressure sensor is used to perform pressure detection between the detection tool and the adjustment piece, so as to detect the dimensional accuracy and mechanical properties of the subsequent stator core.

[0012] Preferably, the end of the pull rod away from the tension disk is a threaded rod. The thread on the pull rod can facilitate the installation of the tension disk in the receiving groove of the expansion sleeve, and also facilitate the expansion sleeve to be attached under the tension of the pull rod.

[0013] A method for using a stator liner tooling is implemented by using the above-mentioned stator liner tooling, and includes the following steps: S1: installing an expansion sleeve on the support rod portion of the support rod flange, and then tightening the pull rod so that the tension disk is completely embedded in the accommodating groove of the expansion sleeve; S2: installing an adjustment plate into a limit groove, starting a machine tool to pull the pull rod, so that the expansion sleeve is in a tightened and expanded state, and then machining the excess size of the surface of the adjustment plate along the expansion sleeve ring; S3: installing a detection tooling on the machined adjustment plate, starting the machine tool to pull the pull rod, and detecting the pressure between the adjustment plate and the pressure measuring groove until the pressure error meets the expected value.

[0014] Preferably, the adjustment sheet and the expansion sleeve are in interference fit.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) it can be used to detect the dimensional accuracy and mechanical properties of the stator core, thereby ensuring that the stator product meets production requirements and improving product quality; (2) the method of use is simple, and after the stator liner tooling is calibrated, it can be used for stator detection; (3) it can be applied to stator detection of various sizes and types; (4) the expansion effect of the expansion sleeve is uniform, which can improve the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric drawing of the present invention.

[0017] Figure 2 It is a schematic diagram of the assembly state of the support rod flange and the expansion sleeve of the present invention.

[0018] Figure 3 It is a schematic diagram of the support rod flange of the present invention.

[0019] Figure 4 Schematic diagram of the elastic component of the present invention.

[0020] Figure 5 It is a schematic diagram of the expansion sleeve of the present invention.

[0021] Figure 6 Schematic diagram of the adjustment sheet of the present invention.

[0022] Figure 7 Schematic diagram of the pull rod of the present invention.

[0023] Figure 8 It is a cross-sectional view of the support rod flange and the expansion sleeve assembly state of the present invention.

[0024] Fig. 9 It is a schematic diagram of the detection tooling of the present invention.

[0025] In the figure: 1. support rod flange, 2. expansion sleeve, 3. flange part, 4. support rod part, 5. pull rod, 6. tension plate, 7. accommodating groove, 8.1. first oblique opening, 8.2. second oblique opening, 9. elastic component, 10. sleeve, 11. first elastic member, 12. limiting part, 13. first tension groove, 14. second tension groove, 15. positioning pin, 16. limiting groove, 17. adjustment plate, 18. detection tooling, 19. pressure measuring groove, 20. threaded hole, 21. first pressure sensor, 22. hexagonal hole, 23. connecting part, 24. limiting block, 25. indicator light, 26. second elastic member, 27. power line duct. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0027] Example 1: Figures 1 to 9A stator liner tooling shown includes a support rod flange 1 and an expansion sleeve 2. The support rod flange 1 includes a support rod portion 4 and a flange portion 3 and is a cylindrical structure as a whole. The interior of the support rod flange 1 is a cylindrical hollow body. The radial dimension of the support rod portion 4 is smaller than the radial dimension of the flange portion 3, and the axial length of the support rod portion 4 is greater than the axial length of the flange portion 3. Two layers of annular first bevels 8.1 are provided at one end of the support rod portion 4 away from the flange portion 3. The two layers of first bevels 8.1 are respectively located at the end of the support rod portion 4 and the main body of the support rod portion 4 close to the end. The expansion sleeve 2 can cooperate with the end of the support rod portion 4 away from the flange portion 3. Two layers of second bevels 8.2 are also provided inside the expansion sleeve 2. The spacing between the second bevels 8.2 is the same as the spacing between the first bevels 8.1, and the first bevels 8.1 and The second bevel 8.2 can cooperate with each other. When the expansion sleeve 2 is sleeved on the support rod part 4, the first bevel 8.1 and the second bevel 8.2 can limit the expansion sleeve 2 to a certain extent. However, when there is an axial extrusion pressure between the expansion sleeve 2 and the support rod part 4, the first bevel 8.1 and the second bevel 8.2 can guide the axial movement of the expansion sleeve 2, so that the expansion sleeve 2 can be tightened and expanded. A pull rod 5 is also arranged inside the support rod flange 1. The pull rod 5 axially penetrates the entire support rod flange 1. A tension disk 6 is arranged at one end of the pull rod 5, and a receiving groove 7 is arranged at the end of the expansion sleeve 2 away from the flange part 3. The tension disk 6 and the receiving groove 7 are both cylindrical, and the size of the tension disk 6 is adapted to the size of the receiving groove 7, so that the tension disk 6 can be embedded in the receiving groove 7. After the pull rod 5, the strut flange 1 and the expansion sleeve 2 are assembled, applying tension from the end of the pull rod 5 away from the tension plate 6 can make the expansion sleeve 2 press against the strut portion 4 of the strut flange 1, so that the expansion sleeve 2 moves to a certain extent along the axial direction of the strut portion 4 under the action of the first bevel 8.1 and the second bevel 8.2, and finally expands the expansion sleeve 2.

[0028] A plurality of bolt holes 20 are arranged on the flange portion 3 of the strut flange 1. The flange portion 3 can be used to install the strut flange 1 on the machine tool. The strut flange 1 can be fixed on the machine tool through the bolt holes 20 and the bolts. At the same time, for the accuracy of detection, it is also necessary to adjust each bolt to ensure the concentricity and verticality between the strut flange 1 and the machine tool. Specifically, a first pressure sensor 21 can be arranged at the end of the flange portion 3. The first pressure sensors 21 are evenly arranged in an annular shape on the end face of the flange portion 3. When adjusting the bolts, the detection pressure values ​​of each first sensor 21 can be adjusted so that the pressure detected by the first sensor 21 is as similar as possible, and the error needs to be guaranteed to be within 5%.

[0029] The end of the pull rod 5 away from the tension disk 6 is a threaded rod, through which the pull rod 5 can be threadedly connected to the machine tool, and the machine tool applies tension to the pull rod 5; a hexagonal hole 22 is provided on the tension disk 6, and the pull rod 2 can be screwed and tightened by a hexagonal wrench, and the tension disk 6 can also be gradually embedded in the receiving groove 7 of the expansion sleeve 2. The depth of the receiving groove 7 on the expansion sleeve 2 is the same as the thickness of the tension disk 6. When the tension disk 6 is completely embedded in the receiving groove 7, the outer end surface of the tension disk 6 is flush with the notch of the receiving groove 7. A second elastic member 26 is also sleeved on the threaded section of the pull rod 5. The second elastic member 26 is a circular spring structure. When the pull rod 5 is fixed on the machine tool, the second elastic member 26 can ensure that the pull rod 5 has a certain pre-tightening force, and when the pull rod 5 is rotated forward and reversed, it is not easy to loosen. The tension disk 6 is also provided with power line grooves 27 evenly distributed in the circumferential direction, through which the stator windings can pass, thereby providing good constraints on the stator and preventing the windings from being thrown onto the machine tool during the rotation of the stator.

[0030] It should be noted that the first bevel 8.1 and the second bevel 8.2 have the same angle, and the second bevel 8.2 in the expansion sleeve 2 and the inner diameter of the expansion sleeve 2 need to be machined at one time to ensure the consistency of the slope of the two second bevels 8.2 of the expansion sleeve 2, and further ensure the concentricity of the inside of the expansion sleeve 2; similarly, the two first bevels 8.1 on the strut portion 4 and the strut portion 4 (the part that cooperates with the expansion sleeve 2) also need to be machined at one time to ensure the consistency of the slope of the two first bevels 8.1 on the strut portion 4, and further ensure the concentricity of the surface of the strut portion 4.

[0031] The expansion sleeve 2 is also provided with a plurality of first tension grooves 13 and second tension grooves 14 in the circumferential direction. The number of the first tension grooves 13 and the second tension grooves 14 is eight. The first tension grooves 13 and the second tension grooves 14 are alternately distributed on the axial surface of the expansion sleeve 2, and the first tension grooves 13 and the second tension grooves 14 penetrate the wall thickness of the expansion sleeve 2 but do not penetrate the axial direction of the expansion sleeve 2. The openings of the first tension grooves 13 and the second tension grooves 14 are arranged in reverse, so as to ensure that the expansion sleeve 2 can be uniformly expanded in the radial direction when it is pressed and expanded by the support rod part 4, thereby ensuring the expansion effect. A circular hole is provided at one end of the first tension groove 13 and the second tension groove 14 away from the end face of the expansion sleeve 2. The circular hole can eliminate the stress of the tension groove on the wall of the expansion sleeve 2, and ensure that the first tension groove 13 and the second tension groove 14 are not easily damaged when expanded. Among them, the opening of the first tension groove 13 faces the position where the flange part 3 is located, and the opening of the second tension groove 14 faces away from the position where the flange part 3 is located.

[0032] A locating pin 15 is also provided on the support rod portion 4, and the size of the locating pin 15 is adapted to the slot width size of the first tension slot 13; specifically, the locating pin 15 is a cylindrical block protruding from the support rod portion 4 and cooperating with the expansion sleeve 2. The outer diameter of the locating pin 15 is about 0.1 mm smaller than the slot width of the first tension slot 13, so that the locating pin 15 can be ensured to smoothly enter the first tension slot 13. In addition, the locating pin 15 can also prevent the expansion sleeve 2 from rotating circumferentially along the support rod portion 4 without hindering the axial movement between the expansion sleeve 2 and the support rod portion 4.

[0033] A limiting groove 16 is also provided on the outer surface of the expansion sleeve 2. The length direction of the limiting groove 16 is along the axial direction of the expansion sleeve 2. The limiting groove 16 is arranged between the first tension groove 13 and the second tension groove 14, and the cross-section of the limiting groove 16 is T-shaped. The limiting groove 16 does not penetrate the wall thickness of the expansion sleeve 2. One end of the limiting groove 16 extends to the end face of the expansion sleeve 2, and the other end is located on the surface of the expansion sleeve 2. The opening direction of the limiting groove 16 is the same as the opening direction of the second tension groove 14, toward the end of the expansion sleeve 2 away from the flange portion 3. An adjustment sheet 17 is arranged in the limit groove 16. There are eight adjustment sheets 17, which are arranged on the eight limit grooves 16 of the expansion sleeve 2. Specifically, the adjustment sheet 17 includes a connecting portion 23, which is a slide bar. The cross section of the slide bar is a T-shaped piece adapted to the limit groove 16. The adjustment sheet 17 is an arc-shaped piece adapted to the surface of the expansion sleeve 2. The slide bar is arranged on the concave side of the adjustment sheet 17, so that when all the adjustment sheets 17 are assembled, a cylindrical shape can be formed between the adjustment sheets 17, that is, the radial size of the expansion sleeve 2 can be changed by the adjustment sheet 17; a limit block 24 is also arranged on the adjustment sheet 17. The limit block 24 is a limit boss protruding on the convex side of the adjustment sheet 17. The limit block 24 is arranged on the side of the adjustment sheet 17 close to the flange portion 3. The limit groove 16 and the adjustment sheet 17 are interference fit, and the two matching sizes require an interference fit of 0.01-0.02mm. It should be noted that after the adjustment piece 17 is installed, the circumferential sides of the adjustment piece 17 can respectively cover the first tension groove 13 and the second tension groove 14, that is, when the radial dimension of the expansion sleeve 2 is expanded, the main parts of the expansion sleeve 2 on both sides of the first tension groove 13 and the second tension groove 14 can be pressed tightly against the concave surface of the adjustment piece 17, thereby transmitting the force to the adjustment piece 17, so that the radial movement of the adjustment piece 17 can also be synchronized, ensuring a uniform radial expansion effect.

[0034] This solution also requires the use of a detection tool 18, which is a standard part. The detection tool 18 has the same shape as the stator core, and a pressure measuring groove 19 (stator core winding groove) is provided inside the detection tool 18. When the detection tool 18 is sleeved on the outside of the expansion sleeve 2, the adjustment piece 17 on the outer surface of the expansion sleeve 2 needs to be located in the pressure measuring groove 19 inside the detection tool 18, and the detection tool 18 abuts against the limit block 24 on the adjustment piece 17, and the limit block 24 can limit the detection tool 18. A second pressure sensor is provided between the adjustment piece 17 and the pressure measuring groove 19, and eight groups of the second pressure sensor are also provided; the second pressure sensor can detect the pressure value between the adjustment piece 17 and the pressure measuring groove 19.

[0035] An indicator light 25 is also provided on the end face of the detection tooling 18. When the pressure values ​​detected by all the second sensors are within the design requirements, the indicator light 25 will light up green. When the pressure at a certain position is too high or too low, a red light alarm will be displayed, so that only the corresponding adjustment piece 17 needs to be adjusted or fine-tuned at the corresponding position.

[0036] A method for using a stator liner tool is implemented by using the stator liner tool mentioned above; and comprises the following steps.

[0037] First, the flange part 3 of the support rod flange 1 is fixed to the machine tool by bolts, and then the concentricity and verticality between the support rod flange 1 and the machine tool are adjusted by adjusting the tightening degree of the bolts, and the error value detected by the first pressure sensor 21 is within 5%.

[0038] Then, the expansion sleeve 2 is mounted on one end of the strut portion 4 of the strut flange 1, so that the second bevel 8.2 on the expansion sleeve 2 is preliminarily matched with the first bevel 8.1 on the strut portion 4, and the locating pin 15 is located in the first tension groove 13; then the threaded end of the pull rod 5 is passed through the strut flange 1 from the side where the expansion sleeve 2 is located, the threaded end is threadedly connected to the machine tool, and the tension plate 6 is completely screwed into the receiving groove 7 of the expansion sleeve 2, so that the tension plate 6 is preliminarily pressed against the receiving groove 7.

[0039] Then, the connection part 23 of the adjustment piece 17 is arranged and installed in the limit groove 16 of the expansion sleeve 2, and the connection part 23 and the limit groove 16 are designed to be interference fit; the two matching dimensions require an interference fit of 0.01-0.02mm. Start the machine tool, pull the pull rod 5, and the pull rod 5 moves along the axial direction of the support rod flange 1. The tension plate 6 applies force from the end face of the expansion sleeve 2, so that the expansion sleeve 2 is pressed against the support rod part 4, and under the action of the first bevel 8.1 and the second bevel 8.2, the expansion sleeve 2 is tightened and expanded, and then the adjustment piece 17 in the expanded state is machined to cut off the excess size of the outer diameter of the adjustment piece 17 and form a limit part on the adjustment piece 17 to adapt and limit the detection fixture 18, so that not only can the concentricity of the adjustment piece 17 as a whole and the main shaft of the machine tool be ensured, but also effective expansion can be ensured so that the stator (detection fixture 18) will not be deformed.

[0040] Finally, the detection tool 18 is set on the outer surface of the arranged adjustment piece 17, so that the adjustment piece 17 is located in the pressure measuring groove 19 in the detection tool 18, and the machine tool is started to pull the pull rod 5, so that the adjustment piece 17 is tightened inside the detection tool 18, and the error in the second pressure sensor is detected and calculated to determine whether the circumferential uniformity of the stator liner tool meets the requirements. When the indicator light 25 on the detection tool 18 is green, it indicates that the pressure value detected by the second sensor is within the design requirement range. If it is red, continue to adjust the above steps until the stator liner tool is qualified.

[0041] Example 2: Figures 1 to 9 A stator liner tooling shown in the figure includes a support rod flange 1, an expansion sleeve 2 and an elastic component 9. The support rod flange 1 includes a support rod portion 4 and a flange portion 3 and is a cylindrical structure as a whole. The interior of the support rod flange 1 is a cylindrical hollow body. The radial dimension of the support rod portion 4 is smaller than the radial dimension of the flange portion 3, and the axial length of the support rod portion 4 is greater than the axial length of the flange portion 3. Two layers of annular first bevels 8.1 are provided at one end of the support rod portion 4 away from the flange portion 3. The two layers of first bevels 8.1 are respectively located at the end of the support rod portion 4 and the main body of the support rod portion 4 near the end. The expansion sleeve 2 can be with the support rod portion 4 away from the flange portion 3. The expansion sleeve 2 is also provided with two layers of second bevels 8.2, and the spacing between the second bevels 8.2 is the same as the spacing between the first bevels 8.1, and the first bevels 8.1 and the second bevels 8.2 can cooperate with each other. When the expansion sleeve 2 is sleeved on the support rod 4, the first bevels 8.1 and the second bevels 8.2 can limit the expansion sleeve 2 to a certain extent, but when there is an axial extrusion force between the expansion sleeve 2 and the support rod 4, the first bevels 8.1 and the second bevels 8.2 can guide the axial movement of the expansion sleeve 2, so that the expansion sleeve 2 can be tightened and expanded. The elastic component 9 is sleeved on the outer surface of the support rod 4, which provides elastic reset for the expansion sleeve 2 on the one hand, and makes the axial force of the expansion sleeve 2 more uniform on the other hand.

[0042] A tie rod 5 is also provided inside the strut flange 1. The tie rod 5 axially penetrates the entire strut flange 1. A tension disc 6 is provided at one end of the tie rod 5, and a receiving groove 7 is provided at the end of the expansion sleeve 2 away from the flange portion 3. The tension disc 6 and the receiving groove 7 are both cylindrical, and the size of the tension disc 6 matches the size of the receiving groove 7, so that the tension disc 6 can be embedded in the receiving groove 7. After the tie rod 5, the strut flange 1 and the expansion sleeve 2 are assembled, a tension is applied from the end of the tie rod 5 away from the tension disc 6, so that the expansion sleeve 2 can be pressed against the strut portion 4 of the strut flange 1, so that the expansion sleeve 2 moves to a certain extent along the axial direction of the strut portion 4 under the action of the first oblique opening 8.1 and the second oblique opening 8.2, and finally the expansion sleeve 2 expands.

[0043] A plurality of bolt holes 20 are arranged on the flange portion 3 of the strut flange 1. The flange portion 3 can be used to install the strut flange 1 on the machine tool. The strut flange 1 can be fixed on the machine tool through the bolt holes 20 and the bolts. At the same time, for the accuracy of detection, it is also necessary to adjust each bolt to ensure the concentricity and verticality between the strut flange 1 and the machine tool. Specifically, a first pressure sensor 21 can be arranged at the end of the flange portion 3. The first pressure sensors 21 are evenly arranged in an annular shape on the end face of the flange portion 3. When adjusting the bolts, the detection pressure values ​​of each first sensor 21 can be adjusted so that the pressure detected by the first sensor 21 is as similar as possible, and the error needs to be guaranteed to be within 5%.

[0044] The elastic component 9 includes a sleeve 10 and a first elastic member 11. The sleeve 10 is a T-shaped sleeve. The T-shaped end of the sleeve 10 is a limiting portion 12, and is arranged on the side close to the expansion sleeve 2. The limiting portion 12 can limit the position of the expansion sleeve 2 and apply force to the end face of the expansion sleeve 2. The limiting portion 12 cooperates with the tension disk 6 to ensure that the axial force of the expansion sleeve 2 is uniform and improve the expansion effect of the expansion sleeve 2. The first elastic member 11 is a round spring. The first elastic member 11 is sleeved on the outer surface of the sleeve 10 and can play a role in elastic reset for the expansion sleeve 2. It should be noted that the length of the sleeve 10 should be less than the distance from the rear end of the expansion sleeve 2 to the flange portion 3 of the support rod flange 1, otherwise the expansion sleeve 2 cannot be effectively expanded and cannot play the role of internal clamping. In addition, the length of the spring member 11 should be greater than the length of the straight tube of the T-shaped sleeve 10.

[0045] The end of the pull rod 5 away from the tension disk 6 is a threaded rod, through which the pull rod 5 can be threadedly connected to the machine tool, and the machine tool applies tension to the pull rod 5; a hexagonal hole 22 is provided on the tension disk 6, and the pull rod 2 can be screwed and tightened by a hexagonal wrench, and the tension disk 6 can also be gradually embedded in the receiving groove 7 of the expansion sleeve 2. The depth of the receiving groove 7 on the expansion sleeve 2 is the same as the thickness of the tension disk 6. When the tension disk 6 is completely embedded in the receiving groove 7, the outer end surface of the tension disk 6 is flush with the notch of the receiving groove 7. A second elastic member 26 is also sleeved on the threaded section of the pull rod 5. The second elastic member 26 is a circular spring structure. When the pull rod 5 is fixed on the machine tool, the second elastic member 26 can ensure that the pull rod 5 has a certain pre-tightening force, and when the pull rod 5 is rotated forward and reversed, it is not easy to loosen. The tension disk 6 is also provided with power line grooves 27 evenly distributed in the circumferential direction, through which the stator windings can pass, thereby providing good constraints on the stator and preventing the windings from being thrown onto the machine tool during the rotation of the stator.

[0046] It should be noted that the first bevel 8.1 and the second bevel 8.2 have the same angle, and the second bevel 8.2 in the expansion sleeve 2 and the inner diameter of the expansion sleeve 2 need to be machined at one time to ensure the consistency of the slope of the two second bevels 8.2 of the expansion sleeve 2, and further ensure the concentricity of the inside of the expansion sleeve 2; similarly, the two first bevels 8.1 on the strut portion 4 and the strut portion 4 (the part that cooperates with the expansion sleeve 2) also need to be machined at one time to ensure the consistency of the slope of the two first bevels 8.1 on the strut portion 4, and further ensure the concentricity of the surface of the strut portion 4.

[0047] The expansion sleeve 2 is also provided with a plurality of first tension grooves 13 and second tension grooves 14 in the circumferential direction. The number of the first tension grooves 13 and the second tension grooves 14 is eight. The first tension grooves 13 and the second tension grooves 14 are alternately distributed on the axial surface of the expansion sleeve 2, and the first tension grooves 13 and the second tension grooves 14 penetrate the wall thickness of the expansion sleeve 2 but do not penetrate the axial direction of the expansion sleeve 2. The openings of the first tension grooves 13 and the second tension grooves 14 are arranged in reverse, so as to ensure that the expansion sleeve 2 can be uniformly expanded in the radial direction when it is pressed and expanded by the support rod part 4, thereby ensuring the expansion effect. A circular hole is provided at one end of the first tension groove 13 and the second tension groove 14 away from the end face of the expansion sleeve 2. The circular hole can eliminate the stress of the tension groove on the wall of the expansion sleeve 2, and ensure that the first tension groove 13 and the second tension groove 14 are not easily damaged when expanded. Among them, the opening of the first tension groove 13 faces the position where the flange part 3 is located, and the opening of the second tension groove 14 faces away from the position where the flange part 3 is located.

[0048] A locating pin 15 is also provided on the support rod portion 4, and the size of the locating pin 15 is adapted to the slot width size of the first tension slot 13; specifically, the locating pin 15 is a cylindrical block protruding from the support rod portion 4 and cooperating with the expansion sleeve 2. The outer diameter of the locating pin 15 is about 0.1 mm smaller than the slot width of the first tension slot 13, so that the locating pin 15 can be ensured to smoothly enter the first tension slot 13. In addition, the locating pin 15 can also prevent the expansion sleeve 2 from rotating circumferentially along the support rod portion 4 without hindering the axial movement between the expansion sleeve 2 and the support rod portion 4.

[0049] A limiting groove 16 is also provided on the outer surface of the expansion sleeve 2. The length direction of the limiting groove 16 is along the axial direction of the expansion sleeve 2. The limiting groove 16 is arranged between the first tension groove 13 and the second tension groove 14, and the cross-section of the limiting groove 16 is T-shaped. The limiting groove 16 does not penetrate the wall thickness of the expansion sleeve 2. One end of the limiting groove 16 extends to the end face of the expansion sleeve 2, and the other end is located on the surface of the expansion sleeve 2. The opening direction of the limiting groove 16 is the same as the opening direction of the second tension groove 14, toward the end of the expansion sleeve 2 away from the flange portion 3. An adjustment sheet 17 is arranged in the limit groove 16. There are eight adjustment sheets 17, which are arranged on the eight limit grooves 16 of the expansion sleeve 2. Specifically, the adjustment sheet 17 includes a connecting portion 23, which is a slide bar. The cross section of the slide bar is a T-shaped piece adapted to the limit groove 16. The adjustment sheet 17 is an arc-shaped piece adapted to the surface of the expansion sleeve 2. The slide bar is arranged on the concave side of the adjustment sheet 17, so that when all the adjustment sheets 17 are assembled, a cylindrical shape can be formed between the adjustment sheets 17, that is, the radial size of the expansion sleeve 2 can be changed by the adjustment sheet 17; a limit block 24 is also arranged on the adjustment sheet 17. The limit block 24 is a limit boss protruding on the convex side of the adjustment sheet 17. The limit block 24 is arranged on the side of the adjustment sheet 17 close to the flange portion 3. The limit groove 16 and the adjustment sheet 17 are interference fit, and the two matching sizes require an interference fit of 0.01-0.02mm. It should be noted that after the adjustment piece 17 is installed, the circumferential sides of the adjustment piece 17 can respectively cover the first tension groove 13 and the second tension groove 14, that is, when the radial dimension of the expansion sleeve 2 is expanded, the main parts of the expansion sleeve 2 on both sides of the first tension groove 13 and the second tension groove 14 can be pressed tightly against the concave surface of the adjustment piece 17, thereby transmitting the force to the adjustment piece 17, so that the radial movement of the adjustment piece 17 can also be synchronized, ensuring a uniform radial expansion effect.

[0050] This solution also requires the use of a detection tool 18, which is a standard part. The detection tool 18 has the same shape as the stator core, and a pressure measuring groove 19 (stator core winding groove) is provided inside the detection tool 18. When the detection tool 18 is sleeved on the outside of the expansion sleeve 2, the adjustment piece 17 on the outer surface of the expansion sleeve 2 needs to be located in the pressure measuring groove 19 inside the detection tool 18, and the detection tool 18 abuts against the limit block 24 on the adjustment piece 17, and the limit block 24 can limit the detection tool 18. A second pressure sensor is provided between the adjustment piece 17 and the pressure measuring groove 19, and eight groups of the second pressure sensor are also provided; the second pressure sensor can detect the pressure value between the adjustment piece 17 and the pressure measuring groove 19.

[0051] An indicator light 25 is also provided on the end face of the detection tooling 18. When the pressure values ​​detected by all the second sensors are within the design requirements, the indicator light 25 will light up green. When the pressure at a certain position is too high or too low, a red light alarm will be displayed, so that only the corresponding adjustment piece 17 needs to be adjusted or fine-tuned at the corresponding position.

[0052] A method for using a stator liner tool is implemented by using the stator liner tool mentioned above; and comprises the following steps.

[0053] First, the flange part 3 of the support rod flange 1 is fixed to the machine tool by bolts, and then the concentricity and verticality between the support rod flange 1 and the machine tool are adjusted by adjusting the tightening degree of the bolts, and the error value detected by the first pressure sensor 21 is within 5%.

[0054] Then, the expansion sleeve 2 is mounted on one end of the strut portion 4 of the strut flange 1, so that the second bevel 8.2 on the expansion sleeve 2 is preliminarily matched with the first bevel 8.1 on the strut portion 4, and the locating pin 15 is located in the first tension groove 13; then the threaded end of the pull rod 5 is passed through the strut flange 1 from the side where the expansion sleeve 2 is located, the threaded end is threadedly connected to the machine tool, and the tension plate 6 is completely screwed into the receiving groove 7 of the expansion sleeve 2, so that the tension plate 6 is preliminarily pressed against the receiving groove 7.

[0055] Then, the connection part 23 of the adjustment piece 17 is arranged and installed in the limit groove 16 of the expansion sleeve 2, and the connection part 23 and the limit groove 16 are designed to be interference fit; the two matching dimensions require an interference fit of 0.01-0.02mm. Start the machine tool, pull the pull rod 5, and the pull rod 5 moves along the axial direction of the support rod flange 1. The tension plate 6 applies force from the end face of the expansion sleeve 2, so that the expansion sleeve 2 is pressed against the support rod part 4, and under the action of the first bevel 8.1 and the second bevel 8.2, the expansion sleeve 2 is tightened and expanded, and then the adjustment piece 17 in the expanded state is machined to cut off the excess size of the outer diameter of the adjustment piece 17 and form a limit part on the adjustment piece 17 to adapt and limit the detection fixture 18, so that not only can the concentricity of the adjustment piece 17 as a whole and the main shaft of the machine tool be ensured, but also effective expansion can be ensured so that the stator (detection fixture 18) will not be deformed.

[0056] Finally, the detection tool 18 is set on the outer surface of the arranged adjustment piece 17, so that the adjustment piece 17 is located in the pressure measuring groove 19 in the detection tool 18, and the machine tool is started to pull the pull rod 5, so that the adjustment piece 17 is tightened inside the detection tool 18, and the error in the second pressure sensor is detected and calculated to determine whether the circumferential uniformity of the stator liner tool meets the requirements. When the indicator light 25 on the detection tool 18 is green, it indicates that the pressure value detected by the second sensor is within the design requirement range. If it is red, continue to adjust the above steps until the stator liner tool is qualified.

Claims

1. A stator lining tool, characterized in that: It includes a support rod flange and an expansion sleeve, the support rod flange includes a flange part and a support rod part, the expansion sleeve is arranged on the end of the support rod part away from the flange part, the interior of the support rod flange is hollow, a pull rod axially passes through the support rod flange, one end of the pull rod is provided with a tension disk and is matched and connected with the end of the expansion sleeve away from the flange part.

2. A stator liner tooling according to claim 1, characterized in that: One end of the expansion sleeve is provided with a receiving groove, and the tension disk is embedded in the receiving groove. The other end of the expansion sleeve and located inside the expansion sleeve is provided with an oblique opening that cooperates with the support rod part.

3. A stator liner tooling according to claim 1, characterized in that: The support rod portion is provided with an elastic component, which is arranged between the flange portion and the expansion sleeve. The elastic component includes a sleeve and an elastic member sleeved outside the sleeve. The sleeve is provided with a limiting portion near one end of the expansion sleeve, and the length of the sleeve is less than the distance from the flange portion to the expansion sleeve.

4. A stator liner tooling according to any one of claims 1 to 3, characterized in that: A plurality of first tension grooves and second tension grooves arranged along the axial direction are evenly distributed on the circumference of the expansion sleeve, and the first tension grooves and the second tension grooves are alternately distributed and have opposite openings.

5. A stator liner tooling according to claim 4, characterized in that: The opening of the first tension groove faces one side of the flange portion. The support rod portion is provided with a positioning pin, and the positioning pin is arranged in the first tension groove.

6. A stator liner tooling according to claim 4, characterized in that A limiting groove is provided between the first tension groove and the second tension groove, and an adjusting piece is provided in the limiting groove. The adjusting piece shields the first tension groove and the second tension groove on both sides of the circumference.

7. A stator liner tooling according to claim 6, characterized in that: It also includes a detection tool, which is set on the outside of the expansion sleeve. A pressure measuring groove matched with the adjustment piece is provided on the inner side of the detection tool, and a pressure sensor is provided between the adjustment piece and the pressure measuring groove.

8. The stator liner tooling according to claim 4, characterized in that: The end of the pull rod away from the tension disk is a threaded rod.

9. A method for using a stator liner tool, characterized in that: The stator liner tooling according to any one of claims 1 to 8 is implemented, comprising the following steps: S1: Place the expansion sleeve on the support rod portion of the support rod flange, and then tighten the tie rod so that the tension plate is completely embedded in the accommodating groove of the expansion sleeve; S2: Install the adjustment piece into the limit groove, start the machine tool and pull the pull rod to make the expansion sleeve in a tightened and expanded state, and then cut off the excess size of the adjustment piece surface along the circumference of the expansion sleeve; S3: Install the detection tooling on the machined adjustment piece, start the machine tool and pull the pull rod to detect the pressure between the adjustment piece and the pressure measuring groove until the pressure error meets the expected value.

10. The method for using a stator liner tool according to claim 9, characterized in that: The adjusting piece and the expansion sleeve are in interference fit.

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