One-time forming tool for stator special-shaped end winding
By designing a one-time forming tooling for stator irregular end windings and utilizing the slot structure of the inner and outer cylinders and the intermediate torsion cylinder assembly, the automated torsion forming of irregular PINs is achieved, solving the problem of difficult PIN retraction and improving welding quality and production efficiency.
Patent Information
- Application Number
- CN202423075590.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-13
AI Technical Summary
The existing motor stator windings have problems with pin clamping difficulties and incomplete retraction during the process of retracting irregular pins, which makes it impossible to automate the production of irregular end windings and requires manual adjustment.
Design a stator irregular end winding one-time forming tooling, including an inner cylinder, an outer cylinder and an intermediate torsion cylinder assembly. The inner and outer cylinder walls are provided with grooves. Through one-time torsion forming, the irregular pins are directly located at the welding positions where they are connected in pairs, eliminating the need for a retraction action.
It has enabled automated production of stator irregular-shaped end windings, improved the pin position accuracy and welding quality, saved on back-up equipment, and ensured the continuity of automated production.
Smart Images
Figure CN223744556U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical technical field, concretely is a kind of stator special-shaped end winding one-time forming tool. BACKGROUND
[0002] In the existing motor stator winding, one end is a conventional end, that is, the radial position of the same layer PIN is the same, the twisting direction is the same, and the lap form is the same, which is first, second layer lap, third, fourth layer lap, fifth, sixth layer lap. The other end is a special-shaped end, that is, a special-shaped PIN appears, in addition to the conventional part lap, there are second, third layer lap, fourth, fifth layer lap.
[0003] Currently, the process route of I pin stator is to separate first and then twist. In the tooling, in addition to the inner cylinder and the outer cylinder, the twisting cylinder only has a slot penetrating the cylinder wall. After twisting at the special-shaped end, the special-shaped PIN needs to be retracted from the slot to the welding position to realize the connection of PINs two by two, so as to meet the structural requirements of welding.
[0004] However, during the retraction of the PIN, there are difficulties in PIN clamping and retraction out of position, which leads to the fact that the special-shaped end winding cannot be automatically put into the barrel in the subsequent automatic cutting process, and manual adjustment of the special-shaped end winding is required.
[0005] Therefore, it is necessary to design a stator special-shaped end winding one-time forming tool, which can ensure that the special-shaped PIN is in the welding position of two-by-two connection after one-time twisting without retraction, and lay a foundation for the automatic production of stator special-shaped end winding. UTILITY MODEL CONTENTS
[0006] The utility model aims at overcoming the defects of prior art, and provides a stator special-shaped end winding one-time forming tool, which can ensure that the special-shaped PIN is in the welding position of two-by-two connection after one-time twisting without retraction, and lay a foundation for the automatic production of stator special-shaped end winding.
[0007] In order to achieve the above-mentioned purpose, the utility model is a stator special-shaped end winding one-time forming tool, which comprises an inner cylinder, an outer cylinder and a middle twisting cylinder assembly. A plurality of middle twisting cylinder assemblies are arranged between the inner cylinder and the outer cylinder. Each middle twisting cylinder assembly comprises a double-layer twisting cylinder and a single-layer twisting cylinder. The double-layer twisting cylinder is arranged outside the single-layer twisting cylinder. The inner side cylinder wall and the outer side cylinder wall of the double-layer twisting cylinder are provided with a slot three.
[0008] Optionally, the inner side cylinder wall of the outer cylinder and the outer side cylinder wall of the inner cylinder are provided with a slot one.
[0009] Optionally, the inner cylinder and the outer cylinder are single-layer cylinders.
[0010] Optionally, the thickness of the cylinder wall of the single-layer cylinder is greater than the width of the slot one.
[0011] Optionally, the single-layer torsion cylinder is provided with a slot two penetrating the cylinder wall.
[0012] Optionally, the thickness of the cylinder wall of the single-layer torsion cylinder is the same as the width of the slot two.
[0013] Optionally, the plurality of intermediate torsion cylinder assemblies are sequentially sleeved outside the inner cylinder, and the outer cylinder is sleeved outside the outermost intermediate torsion cylinder assembly.
[0014] Optionally, the double-layer torsion cylinder has a slot three at the same angle position.
[0015] Optionally, the thickness of the cylinder wall of the double-layer torsion cylinder is greater than the width of the slot three.
[0016] Compared with the prior art, the inner cylinder wall and the outer cylinder wall of the double-layer torsion cylinder are both provided with slots, the once torsion forming of the stator special-shaped end winding is realized, the back-off action of the special-shaped PIN is cancelled, the automatic production interruption caused by the back-off problem is solved, the position degree of the two PINs welded is improved, and the welding quality is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 Fig. 1 is a structural schematic view of the torsion tool of the utility model.
[0018] Figure 2 Fig. 2 is a partial schematic view of the torsion tool of the utility model.
[0019] Figure 3 Fig. 3 is a schematic view of the special-shaped PIN put into the torsion tool in the utility model.
[0020] Figure 4 Fig. 4 is a position schematic view of the special-shaped PIN after once torsion in the utility model.
[0021] Referring to the drawings, 1 is an outer cylinder; 2 is an intermediate torsion cylinder assembly; 3 is an inner cylinder; 5 is a special-shaped PIN; 21 is a double-layer torsion cylinder; 22 is a single-layer torsion cylinder; 41 is a slot one; 42 is a slot two; and 43 is a slot three. DETAILED DESCRIPTION
[0022] The utility model will be further described in combination with the drawings.
[0023] Referring to Figure 1 , Figure 2The utility model relates to a stator special-shaped end winding one-time forming tool, including inner tube, outer tube, intermediate torsion cylinder subassembly, the inner tube 3 with the outer tube 1 between the sleeve sets up one group above intermediate torsion cylinder subassembly 2, the inner side cylinder wall of outer tube 1, the outer side cylinder wall of inner tube 3 is equipped with groove one 41, and each group intermediate torsion cylinder subassembly 2 includes double-layer torsion cylinder 21, single layer torsion cylinder 22, double-layer torsion cylinder 21 is sleeved in single layer torsion cylinder 22 outside, and single layer torsion cylinder 22 is equipped with groove two 42 that penetrates the cylinder wall, and the inner side cylinder wall of double-layer torsion cylinder 21, the outer side cylinder wall is equipped with groove three 43, and in the same angle position of double-layer torsion cylinder 21 has a groove three 43.
[0024] One group above intermediate torsion cylinder subassembly 2 is sequentially sleeved in the outer of inner tube 3, and the outer tube 1 is sleeved in the outer of the outermost intermediate torsion cylinder subassembly 2.In this example, intermediate torsion cylinder subassembly 2 is 3 groups, that is including 1 layer inner tube 3, 1 layer outer tube 1, 3 layers double-layer torsion cylinder 21, 3 layers single layer torsion cylinder 22, total 8 layers.
[0025] The inner tube 3, outer tube 1 are single layer cylinder, and the cylinder wall thickness of single layer cylinder is greater than the width of groove one 41, in order to guarantee the strength of torsion barrel, protect PIN line paint.
[0026] The cylinder wall thickness of single layer torsion cylinder 22 is same with the width of groove two 42, in order to facilitate installation, reduce the risk of bending.
[0027] The cylinder wall thickness of double-layer torsion cylinder 21 is greater than the width of groove three 43, in order to guarantee the strength of torsion barrel, protect PIN line paint.
[0028] Referring to Figure 3 The utility model discloses when working, all PIN including special-shaped PIN 5 are separated to the groove of each layer torsion cylinder. After all PIN lines of stator special-shaped end enter the barrel, 8 layers of torsion cylinders are twisted, since the groove three 43 of double-layer torsion cylinder 21 does not penetrate the cylinder wall, the position of special-shaped PIN 5 is limited, so that the special-shaped PIN 5 is directly located at the welding position of two two interfaces after one-time torsion forming, as shown in Figure 4 .
[0029] For the forming mode of different PIN lines such as XPIN or Hairpin, the special-shaped end torsion can be realized one-time torsion forming by the utility model. The winding after torsion has smaller layer spacing and envelope size.
[0030] Compared with prior art, the inner side cylinder wall and the outer side cylinder wall of double-layer torsion cylinder are all equipped with grooves, realize the one-time torsion forming of stator special-shaped end winding, cancel the back-off action of special-shaped PIN, and each stator automatic production line can save 2 special-shaped PIN back-off equipment, solve the automatic production interruption caused by back-off problem, improve the position degree of two PINs of welding, and guarantee the welding quality.
Claims
1. A stator profiled end winding primary forming tooling, comprising an inner cylinder, an outer cylinder, a middle torsion cylinder assembly, characterized in that: A plurality of intermediate twisted cylinder assemblies (2) are sleeved between the inner cylinder (3) and the outer cylinder (1), each intermediate twisted cylinder assembly (2) comprises a double-layer twisted cylinder (21) and a single-layer twisted cylinder (22), the double-layer twisted cylinder (21) is sleeved outside the single-layer twisted cylinder (22), and the inner side cylinder wall and the outer side cylinder wall of the double-layer twisted cylinder (21) are provided with a groove three (43).
2. The stator profiled end winding primary forming tooling according to claim 1, characterized in that: The inner side cylinder wall of the outer cylinder (1) and the outer side cylinder wall of the inner cylinder (3) are provided with a groove one (41).
3. The stator profiled end winding one-shot forming tooling according to claim 2, characterized in that: The inner cylinder (3) and the outer cylinder (1) are single-layer cylinders.
4. The stator profiled end winding primary forming tooling according to claim 3, characterized in that: The thickness of the cylinder wall of the single-layer cylinder is greater than the width of the groove one (41).
5. The stator profiled end winding one-shot molding tooling according to claim 1, characterized in that: The single-layer twisted cylinder (22) is provided with a groove two (42) penetrating the cylinder wall.
6. The stator profiled end-winding primary forming tooling of claim 5, wherein: The thickness of the cylinder wall of the single-layer twisted cylinder (22) is the same as the width of the groove two (42).
7. The stator profiled end winding one-shot molding tooling according to claim 1, characterized in that: The plurality of intermediate twisted cylinder assemblies (2) are sequentially sleeved outside the inner cylinder (3), and the outer cylinder (1) is sleeved outside the outermost intermediate twisted cylinder assembly (2).
8. The stator profiled end-winding primary forming tooling of claim 1, wherein: The double-layer twisted cylinder (21) has a groove three (43) at the same angle position.
9. The stator profiled end-winding primary forming tooling of claim 1, wherein: The thickness of the cylinder wall of the double-layer twisted cylinder (21) is greater than the width of the groove three (43).