Stitch welding and grinding integrated stator core clamp
By designing a stacking, welding and grinding integrated stator core clamp, and using one-time clamping to achieve three processes, stacking, welding and grinding, the problems of high tooling cost and low positioning accuracy in the existing technology are solved, and efficient and low-cost stator core processing is achieved.
Patent Information
- Application Number
- CN202422175427.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-05
AI Technical Summary
Two sets of tooling are required during the production of existing stator cores, which leads to high cost of work and low positioning accuracy. The deformation of the iron core after welding causes hole shrinkage and stator sheet deformation.
A stacking, welding and grinding integrated stator core clamp is designed, and the stacking, welding and grinding is achieved through one clamping. By combining two sets of tooling into one set, using the mandrel, screw, welding left retaining ring, positioning key, welding right retaining ring, opening washer, grinding left retaining ring and other components, it can achieve fast clamping and high-precision positioning.
The tooling structure is simplified, the material cost is reduced, the positioning accuracy is improved, and the stator iron core groove shape is neat and the operation is convenient and fast.
Smart Images
Figure CN223146947U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stator core processing, in particular to a stator core fixture integrating stacking, welding and grinding. Background Art
[0002] The stator core is a very important component in a small and special motor. The manufacturing quality and precision thereof directly affect the quality and working performance of the small and special motor, and thus high requirements are imposed on the manufacturing of the stator core. For some small and special motors, external circle grinding processing is also required according to design requirements to achieve higher dimensional accuracy and form and position tolerances. Usually, three processes of stacking, welding and grinding are adopted to complete the manufacturing of the stator core, and two sets of toolings, namely a stacking and welding fixture and a grinding fixture, are needed.
[0003] The disadvantages of the common stator core manufacturing methods are as follows: 1) Two sets of fixtures are required, and the tooling cost is relatively high; 2) After the stator core is stacked and welded, it needs to be pressed out from the mandrel of the stacking and welding fixture and then installed into the mandrel of the grinding fixture, involving two times of clamping and two times of positioning, which affect the dimensional and shape accuracy; 3) Since the iron core has a small amount of deformation after welding, resulting in shrinkage of the holes, repeated removal and installation easily cause deformation or springing of the stator sheets at the end face. Content of the Utility Model
[0004] The purpose of the utility model is to provide a stator core fixture integrating stacking, welding and grinding, including: a mandrel, a plurality of screws, a welding left retaining ring, two positioning keys, a welding right retaining ring, an opening washer, a nut, a grinding left retaining ring and a grinding right retaining ring.
[0005] The mandrel is of an overall rotary body structure and includes a connecting shaft, a positioning shaft and a fixing shaft.
[0006] One end of the connecting shaft away from the positioning shaft is provided with a rectangular groove adapted to a welding machine.
[0007] The outer diameter of the positioning shaft is adapted to the inner hole of the stator sheet, and key grooves are provided on both sides of the positioning shaft.
[0008] On the end face of the positioning shaft close to the connecting shaft side, first screw holes equal in number to the screws are provided, and the first screw holes are evenly distributed around the connecting shaft.
[0009] The fixing shaft is provided with threads.
[0010] Both the welding left retaining ring and the welding right retaining ring are of a columnar structure, and the outer diameters of the welding left retaining ring and the welding right retaining ring are both larger than the outer diameter of the stator sheet.
[0011] The welding left retaining ring and the welding right retaining ring are arranged at intervals, and a first groove and a second through hole adapted to the end face of the positioning shaft of the mandrel are provided on the opposite sides.
[0012] One side of the first groove is provided with a first slot adapted to the positioning key.
[0013] A second slot adapted to the positioning key is provided on one side of the second through hole.
[0014] A first through hole adapted to the connecting shaft of the mandrel is provided at the center of the first groove.
[0015] A second screw hole corresponding to the first screw hole of the mandrel is provided in the first groove.
[0016] A plurality of second grooves are evenly provided on the outer side of the welded left retaining ring.
[0017] A plurality of third grooves are evenly provided on the outer side of the welded right retaining ring.
[0018] The split washer is of a stepped rotary body structure and has an opening on one side.
[0019] The outer diameter of the split washer is larger than the outer diameter of the positioning shaft of the mandrel.
[0020] Both the ground left retaining ring and the ground right retaining ring are of a cylindrical structure, and the outer diameters of the ground left retaining ring and the ground right retaining ring are smaller than the outer diameter of the stator sheet after grinding.
[0021] The ground left retaining ring and the ground right retaining ring are arranged at intervals, and a fourth groove and a fourth through hole adapted to the end face of the positioning shaft of the mandrel are provided on the opposite sides.
[0022] A third slot adapted to the positioning key is provided on one side of the fourth groove.
[0023] A fourth slot adapted to the positioning key is provided on one side of the fourth through hole.
[0024] A third through hole adapted to the connecting shaft of the mandrel is provided at the center of the fourth groove.
[0025] A third screw hole corresponding to the first screw hole of the mandrel is provided in the fourth groove.
[0026] Furthermore, the processing methods of the mandrel include turning processing, quenching processing, and outer circle grinding processing.
[0027] Furthermore, the processing methods of the positioning key include quenching processing, wire cutting processing, and surface grinding processing.
[0028] Furthermore, the processing methods of the welded left retaining ring and the welded right retaining ring include turning processing, milling processing, fitter processing, and heat processing.
[0029] Furthermore, the processing methods of the split washer include turning processing, milling processing, fitter processing, and heat processing.
[0030] Further, the processing methods for the left grinding retaining ring and the right grinding retaining ring include turning processing, milling processing, benchwork processing, and thermal processing.
[0031] Further, the positioning shaft of the mandrel and the inner hole of the stator sheet are in clearance fit.
[0032] Further, the positioning key and the keyway of the mandrel are in interference fit.
[0033] Further, the positioning key and the notch of the stator sheet are in clearance fit.
[0034] The technical effects of the present utility model are beyond doubt. The present utility model optimizes two sets of tooling, designs and combines them into one set of tooling, adopts one-time clamping and positioning, and only replaces the left and right retaining rings to complete three processes of stacking, welding, and grinding. The operation is convenient and fast, the positioning accuracy is better, and at the same time, the tooling cost is saved, which is suitable for new product proofing and small batches.
[0035] The manufacturing method of the tooling of the present utility model remains unchanged, but the material cost is saved by more than 1 / 2; the integrated stacking-welding-grinding tooling adopted by the present utility model does not require the iron core to be withdrawn from the mandrel after stacking and welding. Only the left and right retaining rings need to be disassembled and assembled to complete the grinding process, which is convenient and fast and has high positioning accuracy.
[0036] The beneficial effects of the present utility model include: 1) simple structure and reliable use; 2) reliable positioning of the mandrel and the positioning key, ensuring the neatness of the stator core slot shape; 3) optimized design of the relevant structures of the left and right retaining rings and the split washer, realizing the rapid clamping of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] Figure 1 It is a schematic assembly structure diagram of the welding process of the integrated stacking-welding-grinding stator core fixture;
[0038] Figure 2 It is a schematic assembly structure diagram of the grinding process of the integrated stacking-welding-grinding stator core fixture;
[0039] Figure 3 It is a schematic diagram of the mandrel structure; Figure 3 (a) is a front view of the mandrel; Figure 3 (b) is a left view of the mandrel;
[0040] Figure 4 It is a schematic diagram of the structure of the welding left retaining ring; Figure 4 (a) is a front view of the welding left retaining ring; Figure 4 (b) is a cross-sectional view of the welding left retaining ring;
[0041] Figure 5 It is a schematic diagram of the structure of the welding right retaining ring; Figure 5 (a) is a front view of the welding right retaining ring; Figure 5 (b) is a cross-sectional view of the welding right retaining ring;
[0042] Figure 6 Schematic diagram of the structure of the left grinding retaining ring; Figure 6 (a) Front view of the left grinding retaining ring; Figure 6 (b) Cross-sectional view of the left grinding retaining ring;
[0043] Figure 7 Schematic diagram of the structure of the right grinding retaining ring; Figure 7 (a) Front view of the right grinding retaining ring; Figure 7 (b) Cross-sectional view of the right grinding retaining ring;
[0044] Figure 8 Schematic diagram of the structure of the positioning key; Figure 8 (a) Front view of the positioning key; Figure 8 (b) Side view of the positioning key;
[0045] Figure 9 Schematic diagram of the structure of the split washer; Figure 9 (a) Front view of the split washer; Figure 9 (b) Cross-sectional view of the split washer;
[0046] In the figure, mandrel 101, connecting shaft 1011, positioning shaft 1012, fixed shaft 1013, rectangular groove 1014, keyway 1015, first screw hole 1016, screw 102, welded left retaining ring 103, first groove 1031, first slot 1032, first through hole 1033, second screw hole 1034, second groove 1035, positioning key 104, welded right retaining ring 105, second through hole 1051, second slot 1052, third groove 1053, split washer 106, opening 1061, nut 107, left grinding retaining ring 108, fourth groove 1081, third slot 1082, third through hole 1083, third screw hole 1084, right grinding retaining ring 109, fourth through hole 1091, fourth slot 1092, stator sheet 110. Detailed implementation manners
[0047] The present utility model will be further described below in conjunction with embodiments, but it should not be understood that the above-mentioned subject matter scope of the present utility model is limited to the following embodiments. Without departing from the above-mentioned technical idea of the present utility model, various substitutions and changes made according to ordinary technical knowledge and customary means in the art shall be included within the protection scope of the present utility model.
[0048] Embodiment 1:
[0049] Refer to Figures 1 to 9 , a stator core fixture integrating stacking and grinding, comprising: mandrel 101, a plurality of screws 102, welded left retaining ring 103, two positioning keys 104, welded right retaining ring 105, split washer 106, nut 107, left grinding retaining ring 108, right grinding retaining ring 109.
[0050] The mandrel 101 is a rotary body structure as a whole, including a connecting shaft 1011, a positioning shaft 1012, and a fixing shaft 1013.
[0051] One end of the connecting shaft 1011 away from the positioning shaft 1012 is provided with a rectangular groove 1014 adapted to the welding machine.
[0052] The outer diameter of the positioning shaft 1012 is adapted to the inner hole of the stator sheet 110, and key grooves 1015 are provided on both sides of the positioning shaft 1012.
[0053] On the end face of the positioning shaft 1012 close to the connecting shaft 1011, first screw holes 1016 with the same number as the screws 102 are provided, and the first screw holes 1016 are evenly surrounded by the connecting shaft 1011.
[0054] The fixing shaft 1013 is provided with threads.
[0055] The left welding retaining ring 103 and the right welding retaining ring 105 are both columnar structures, and the outer diameters of the left welding retaining ring 103 and the right welding retaining ring 105 are both larger than the outer diameter of the stator sheet 110.
[0056] The left welding retaining ring 103 and the right welding retaining ring 105 are arranged at intervals, and a first groove 1031 and a second through hole 1051 adapted to the end face of the positioning shaft 1012 of the mandrel 101 are provided on the opposite sides.
[0057] A first slot 1032 adapted to the positioning key 104 is provided on one side of the first groove 1031.
[0058] A second slot 1052 adapted to the positioning key 104 is provided on one side of the second through hole 1051.
[0059] A first through hole 1033 adapted to the connecting shaft 1011 of the mandrel 101 is provided at the center of the first groove 1031.
[0060] Second screw holes 1034 corresponding to the first screw holes 1016 of the mandrel 101 are provided in the first groove 1031.
[0061] A plurality of second grooves 1035 are evenly provided on the outer side of the left welding retaining ring 103.
[0062] A plurality of third grooves 1053 are evenly provided on the outer side of the right welding retaining ring 105.
[0063] The split washer 106 is a stepped rotary body structure, and an opening 1061 is provided on one side.
[0064] The outer diameter of the split washer 106 is larger than the outer diameter of the positioning shaft 1012 of the mandrel 101.
[0065] The ground left retaining ring 108 and the ground right retaining ring 109 are both cylindrical structures, and the outer diameters of the ground left retaining ring 108 and the ground right retaining ring 109 are both smaller than the outer diameter of the ground stator sheet 110.
[0066] The ground left retaining ring 108 and the ground right retaining ring 109 are arranged at intervals, and a fourth groove 1081 and a fourth through hole 1091 adapted to the end face of the positioning shaft 1012 of the mandrel 101 are provided on the opposite sides.
[0067] A third slot 1082 adapted to the positioning key 104 is provided on one side of the fourth groove 1081.
[0068] A fourth slot 1092 adapted to the positioning key 104 is provided on one side of the fourth through hole 1091.
[0069] A third through hole 1083 adapted to the connecting shaft 1011 of the mandrel 101 is provided at the center of the fourth groove 1081.
[0070] A third screw hole 1084 corresponding to the first screw hole 1016 of the mandrel 101 is provided in the fourth groove 1081.
[0071] When using the fixture for stator core stacking, welding and grinding, first place the positioning shaft 1012 of the mandrel 101 in the inner hole of the stator sheet 110, and embed the positioning key 104 into the key groove 1015 of the mandrel 101 to fix the stator sheet 110. Then extend the connecting shaft 1011 of the mandrel 101 into the first through hole 1033 of the welding left retaining ring 103, align the positioning key 104 with the first slot 1032 of the welding left retaining ring 103, and fix the second screw hole 1034 of the welding left retaining ring 103 and the first screw hole 1016 of the mandrel 101 together with the screw 102. Next, extend the fixed shaft 1013 of the mandrel 101 into the second through hole 1051 of the welding right retaining ring 105, align the positioning key 104 with the second slot 1052 of the welding right retaining ring 105, so that the positioning shaft 1012 of the mandrel 101 is located in the second through hole 1051 of the welding right retaining ring 105, and perform pre-pressing with a press. Then use the nut 107 to fix the split washer 106 on the side of the welding right retaining ring 105 away from the positioning shaft 1012 of the mandrel 101, and tighten the nut 107 to complete the stacking of the stator sheet 110. Fix the connecting shaft 1011 of the mandrel 101 on the welding machine and weld the stator sheet 110. Loosen the screw 102 and the nut 107, replace the welding left retaining ring 103 with the ground left retaining ring 108, replace the welding right retaining ring 105 with the ground right retaining ring 109, tighten the screw 102 and the nut 107, and then grind the welded stator sheet 110.
[0072] Embodiment 2:
[0073] A fixture for a stator core with integrated stacking, welding and grinding. The main technical content is shown in Embodiment 1. Further, the processing methods for the mandrel 101 include turning processing, quenching processing, and outer circle grinding processing.
[0074] Embodiment 3:
[0075] A fixture for a stator core with integrated stacking, welding and grinding. The main technical content is shown in any one of Embodiments 1 - 2. Further, the processing methods for the positioning key 104 include quenching processing, wire cutting processing, and surface grinding processing.
[0076] Embodiment 4:
[0077] A fixture for a stator core with integrated stacking, welding and grinding. The main technical content is shown in any one of Embodiments 1 - 3. Further, the processing methods for the welding left retaining ring 103 and the welding right retaining ring 105 include turning processing, milling processing, fitter processing, and heat treatment processing.
[0078] Embodiment 5:
[0079] A fixture for a stator core with integrated stacking, welding and grinding. The main technical content is shown in any one of Embodiments 1 - 4. Further, the processing methods for the split washer 106 include turning processing, milling processing, fitter processing, and heat treatment processing.
[0080] Embodiment 6:
[0081] A fixture for a stator core with integrated stacking, welding and grinding. The main technical content is shown in any one of Embodiments 1 - 5. Further, the processing methods for the grinding left retaining ring 108 and the grinding right retaining ring 109 include turning processing, milling processing, fitter processing, and heat treatment processing.
[0082] Embodiment 7:
[0083] A fixture for a stator core with integrated stacking, welding and grinding. The main technical content is shown in any one of Embodiments 1 - 6. Further, the positioning shaft 1012 of the mandrel 101 and the inner hole of the stator sheet 110 are in clearance fit.
[0084] Embodiment 8:
[0085] A fixture for a stator core with integrated stacking, welding and grinding. The main technical content is shown in any one of Embodiments 1 - 7. Further, the positioning key 104 and the keyway 1015 of the mandrel 101 are in interference fit.
[0086] Embodiment 9:
[0087] A fixture for a stator core with integrated stacking, welding and grinding. The main technical content is shown in any one of Embodiments 1 - 8. Further, the positioning key 104 and the notch of the stator sheet 110 are in clearance fit.
[0088] Embodiment 10:
[0089] See Figures 1 to 9 , including: mandrel 101, three screws 102, welded left retaining ring 103, two positioning keys 104, welded right retaining ring 105, split washer 106, nut 107, ground left retaining ring 108, and ground right retaining ring 109.
[0090] The overall mandrel 101 is a rotary body structure, including a connecting shaft 1011, a positioning shaft 1012, and a fixed shaft 1013.
[0091] One end of the connecting shaft 1011 away from the positioning shaft 1012 is provided with a rectangular groove 1014 adapted to a welding machine.
[0092] The outer diameter of the positioning shaft 1012 is adapted to the inner hole of the stator sheet 110, and key grooves 1015 are provided on both sides of the positioning shaft 1012.
[0093] On the end face of the positioning shaft 1012 close to the connecting shaft 1011, there are first screw holes 1016 with the same number as the screws 102, and the first screw holes 1016 are evenly surrounded by the connecting shaft 1011.
[0094] The fixed shaft 1013 is provided with threads.
[0095] Both the welded left retaining ring 103 and the welded right retaining ring 105 are cylindrical structures, and the outer diameters of the welded left retaining ring 103 and the welded right retaining ring 105 are 2 - 3 mm larger than the outer diameter of the stator sheet 110 to ensure that the iron core does not bounce off.
[0096] The welded left retaining ring 103 and the welded right retaining ring 105 are arranged at intervals, and a first groove 1031 and a second through hole 1051 adapted to the end face of the positioning shaft 1012 of the mandrel 101 are provided on the opposite side.
[0097] One side of the first groove 1031 is provided with a first slot 1032 adapted to the positioning key 104.
[0098] One side of the second through hole 1051 is provided with a second slot 1052 adapted to the positioning key 104.
[0099] The center of the first groove 1031 is provided with a first through hole 1033 adapted to the connecting shaft 1011 of the mandrel 101.
[0100] The first groove 1031 is provided with second screw holes 1034 corresponding to the first screw holes 1016 of the mandrel 101.
[0101] A number of second grooves 1035 are evenly provided on the outer side of the welded left retaining ring 103.
[0102] A plurality of third grooves 1053 are evenly arranged on the outer side of the welded right retaining ring 105.
[0103] The split washer 106 is a stepped rotary body structure, and an opening 1061 is provided on one side.
[0104] The outer diameter of the split washer 106 is larger than the outer diameter of the positioning shaft 1012 of the mandrel 101.
[0105] The ground left retaining ring 108 and the ground right retaining ring 109 are both cylindrical structures, and the outer diameters of the ground left retaining ring 108 and the ground right retaining ring 109 are both 0.5 - 1 mm smaller than the outer diameter of the ground stator sheet 110 to ensure grinding.
[0106] The ground left retaining ring 108 and the ground right retaining ring 109 are arranged at intervals, and a fourth groove 1081 and a fourth through hole 1091 adapted to the end face of the positioning shaft 1012 of the mandrel 101 are provided on the opposite sides.
[0107] A third slot 1082 adapted to the positioning key 104 is provided on one side of the fourth groove 1081.
[0108] A fourth slot 1092 adapted to the positioning key 104 is provided on one side of the fourth through hole 1091.
[0109] A third through hole 1083 adapted to the connecting shaft 1011 of the mandrel 101 is provided at the center of the fourth groove 1081.
[0110] A third screw hole 1084 corresponding to the first screw hole 1016 of the mandrel 101 is provided in the fourth groove 1081.
[0111] When using the fixture for stator core stacking, welding and grinding, first place the positioning shaft 1012 of the mandrel 101 in the inner hole of the stator sheet 110, and insert the positioning key 104 into the keyway 1015 of the mandrel 101 to fix the stator sheet 110. Then extend the connecting shaft 1011 of the mandrel 101 into the first through hole 1033 of the left welding retainer 103, align the positioning key 104 with the first slot 1032 of the left welding retainer 103, and fix the second screw hole 1034 of the left welding retainer 103 and the first screw hole 1016 of the mandrel 101 together with the screw 102. Next, extend the fixed shaft 1013 of the mandrel 101 into the second through hole 1051 of the right welding retainer 105, align the positioning key 104 with the second slot 1052 of the right welding retainer 105, so that the positioning shaft 1012 of the mandrel 101 is located in the second through hole 1051 of the right welding retainer 105, and perform pre-pressing with a press. Then use the nut 107 to fix the split washer 106 on the side of the right welding retainer 105 away from the positioning shaft 1012 of the mandrel 101, and tighten the nut 107 to complete the stacking of the stator sheets 110. Fix the connecting shaft 1011 of the mandrel 101 on the welding machine and weld the stator sheets 110. Loosen the screw 102 and the nut 107, replace the left welding retainer 103 with the left grinding retainer 108, replace the right welding retainer 105 with the right grinding retainer 109, tighten the screw 102 and the nut 107, and then grind the welded stator sheets 110.
[0112] Example 11:
[0113] A fixture for a stator core with integrated stacking, welding and grinding, the main technical content is as shown in Example 10. Further, the processing method of the mandrel 101 includes turning processing, quenching processing, and outer circle grinding processing.
[0114] The mandrel 101 is processed through turning, quenching, and outer circle grinding processes.
[0115] Example 12:
[0116] A fixture for a stator core with integrated stacking, welding and grinding, the main technical content is as shown in any one of Examples 10 - 11. Further, the processing method of the positioning key 104 includes quenching processing, wire cutting processing, and surface grinding processing.
[0117] The positioning key 104 is processed through quenching, wire cutting, and surface grinding processes.
[0118] Example 13:
[0119] A fixture for a stator core with integrated stacking, welding and grinding, the main technical content is as shown in any one of Examples 10 - 12. Further, the processing methods of the left welding retainer 103 and the right welding retainer 105 include turning processing, milling processing, fitting processing, and heat treatment processing.
[0120] Example 14:
[0121] A fixture for a stator core with integrated stacking, welding and grinding, for the main technical content, see any one of Examples 10 - 13. Further, the processing methods for the opening washer 106 include turning processing, milling processing, benchwork processing, and thermal processing.
[0122] Example 15:
[0123] A fixture for a stator core with integrated stacking, welding and grinding, for the main technical content, see any one of Examples 10 - 14. Further, the processing methods for the left grinding retaining ring 108 and the right grinding retaining ring 109 include turning processing, milling processing, benchwork processing, and thermal processing.
[0124] Example 16:
[0125] A fixture for a stator core with integrated stacking, welding and grinding, for the main technical content, see any one of Examples 10 - 15. Further, the positioning shaft 1012 of the mandrel 101 and the inner hole of the stator sheet 110 are in clearance fit, and the tolerance value is 0.01 - 0.02.
[0126] Example 17:
[0127] A fixture for a stator core with integrated stacking, welding and grinding, for the main technical content, see any one of Examples 10 - 16. Further, the positioning key 104 and the keyway 1015 of the mandrel 101 are in interference fit.
[0128] Example 18:
[0129] A fixture for a stator core with integrated stacking, welding and grinding, for the main technical content, see any one of Examples 10 - 17. Further, the positioning key 104 and the notch of the stator sheet 110 are in clearance fit, and the tolerance value is 0.01 - 0.02.
[0130] Example 19:
[0131] See Figures 1 to 9 , a fixture for a stator core with integrated stacking, welding and grinding, comprising: a mandrel 101, an M5×12 screw 102, a left welding retaining ring 103, a positioning key 104, a right welding retaining ring 105, an opening washer 106, an M16 nut 107, a left grinding retaining ring 108, and a right grinding retaining ring 109.
[0132] Steps: 1) Preparation: Tight-fit and embed 2 locating keys 104 into the keyways of the mandrel 101. Assemble 3 M5×12 screws 102 and 1 M16 nut 107 onto the fixture. 2) Stacking and pressing: Fasten the welded left retaining ring 103 to the left end face of the mandrel 101 with 3 M5×12 screws 102, and then place the mandrel vertically upward. After stacking the stator laminations neatly, align the slot openings with the locating keys on the mandrel and load them into the mandrel 101 according to the required quantity. Install the welded right retaining ring 105, pre-press it on the press, and after releasing the pressure, install the split washer 106 and M16 nut 107, and tighten the nut to complete the stacking and pressing of the stator laminations. 3) Welding: Position the workpiece and the fixture together on the laser welding machine and weld the outer circle of the stator laminations. Allow natural cooling. 4) Grinding: Loosen the 3 M5×12 screws 102, remove the welded left retaining ring 103, replace it with the grinding left retaining ring 108, and tighten the screws. Loosen the M16 nut 107, remove the welded right retaining ring 105, replace it with the grinding right retaining ring 109, and tighten the nut. Grind to the required size. After cleaning, remove the workpiece from the mandrel. Thus, the processing of the stator core is completed.
[0133] The fixture for the integrated stacked, welded and ground stator core is assembled from 5 types of components, and sufficient strength and stiffness are required in material selection.
[0134] The mandrel 101 is processed through turning, quenching and outer circle grinding processes. The locating key 104 is processed through quenching, wire cutting and surface grinding processes. The left and right retaining rings and the split washer are processed through turning, milling, fitting and heat treatment. Finally, assemble with the standard parts M5×12 screws 102 and M16 nuts 107 according to Figure One 、 Two assembly.
[0135] Mandrel 101: There is a clearance fit between the outer circle of the mandrel and the inner hole of the stator core, and the tolerance value is 0.01 - 0.02.
[0136] The outer circles of the welded left and right retaining rings 103 and 105 are 2 - 3 mm larger than the outer circle of the stator core to ensure that the core does not spring open.
[0137] The outer circles of the grinding left and right retaining rings 108 and 109 are 0.5 - 1 mm smaller than the ground size of the outer circle of the stator core to ensure grinding.
[0138] Locating key 104: There is an interference fit with the keyway of the mandrel and a clearance fit with the slot opening of the stator lamination, and the tolerance value is 0.01 - 0.02.
Claims
1. A stator core fixture integrating lamination and grinding, characterized in that Including: A mandrel (101), several screws (102), a welded left retaining ring (103), two positioning keys (104), a welded right retaining ring (105), an open washer (106), a nut (107), a ground left retaining ring (108), and a ground right retaining ring (109); The mandrel (101) is an overall rotating body structure, including a connecting shaft (1011), a positioning shaft (1012), and a fixing shaft (1013); One end of the connecting shaft (1011) away from the positioning shaft (1012) is provided with a rectangular groove (1014) adapted to a welding machine; The outer diameter of the positioning shaft (1012) is adapted to the inner hole of the stator sheet (110), and key grooves (1015) are provided on both sides of the positioning shaft (1012); On the end face of the positioning shaft (1012) close to the connecting shaft (1011), first screw holes (1016) with the same number as the screws (102) are provided, and the first screw holes (1016) are evenly surrounded by the connecting shaft (1011); The fixing shaft (1013) is provided with threads; Both the welded left retaining ring (103) and the welded right retaining ring (105) are columnar structures, and the outer diameters of the welded left retaining ring (103) and the welded right retaining ring (105) are both larger than the outer diameter of the stator sheet (110); The welded left retaining ring (103) and the welded right retaining ring (105) are arranged at intervals, and a first groove (1031) and a second through hole (1051) adapted to the end face of the positioning shaft (1012) of the mandrel (101) are provided on the opposite sides; One side of the first groove (1031) is provided with a first slot (1032) adapted to the positioning key (104); One side of the second through hole (1051) is provided with a second slot (1052) adapted to the positioning key (104); The center of the first groove (1031) is provided with a first through hole (1033) adapted to the connecting shaft (1011) of the mandrel (101); A second screw hole (1034) corresponding to the first screw hole (1016) of the mandrel (101) is provided in the first groove (1031); A number of second grooves (1035) are evenly provided on the outer side of the welded left retaining ring (103); A number of third grooves (1053) are evenly provided on the outer side of the welded right retaining ring (105); The open washer (106) is a stepped rotating body structure, and an opening (1061) is provided on one side; The outer diameter of the open washer (106) is larger than the outer diameter of the positioning shaft (1012) of the mandrel (101); Both the ground left retaining ring (108) and the ground right retaining ring (109) are columnar structures, and the outer diameters of the ground left retaining ring (108) and the ground right retaining ring (109) are both smaller than the outer diameter of the ground stator sheet (110); The ground left retaining ring (108) and the ground right retaining ring (109) are arranged at intervals, and a fourth groove (1081) and a fourth through hole (1091) adapted to the end face of the positioning shaft (1012) of the mandrel (101) are provided on the opposite sides; One side of the fourth groove (1081) is provided with a third slot (1082) adapted to the positioning key (104); On one side of the fourth through hole (1091), there is a fourth slot (1092) adapted to the positioning key (104); At the center of the fourth groove (1081), there is a third through hole (1083) adapted to the connecting shaft (1011) of the mandrel (101); In the fourth groove (1081), there is a third screw hole (1084) corresponding to the first screw hole (1016) of the mandrel (101).
2. The one-piece stator core fixture for stacked soldering and grinding according to claim 1, wherein The processing methods of the mandrel (101) include turning processing, quenching processing, and outer circle grinding processing.
3. The one-piece stator core fixture for lapping and welding according to claim 1, characterized in that, The processing methods of the positioning key (104) include quenching processing, wire cutting processing, and surface grinding processing.
4. A stacked and welded integrated stator core fixture according to claim 1, characterized in that, The processing methods of the welded left retaining ring (103) and the welded right retaining ring (105) include turning processing, milling processing, benchwork processing, and heat treatment processing.
5. A stack-welding and grinding integrated stator core fixture according to claim 1, characterized in that, The processing methods of the split washer (106) include turning processing, milling processing, benchwork processing, and heat treatment processing.
6. A stacked and welded integrated stator core fixture according to claim 1, characterized in that, The processing methods of the ground left retaining ring (108) and the ground right retaining ring (109) include turning processing, milling processing, benchwork processing, and heat treatment processing.
7. A stacked and welded integrated stator core fixture according to claim 1, characterized in that The positioning shaft (1012) of the mandrel (101) has a clearance fit with the inner hole of the stator sheet (110).
8. A stacked and welded integrated stator core fixture according to claim 1, characterized in that, The positioning key (104) has an interference fit with the keyway (1015) of the mandrel (101).
9. The one-piece stator core fixture for overlapping welding and grinding according to claim 1, characterized in that The positioning key (104) has a clearance fit with the notch of the stator sheet (110).