A symmetrical fan-shaped punching lamination stacking welding fixture and positioning method

Abstract

The present invention belongs to the design technology of stacking welding positioning fixture, and specifically relates to a symmetrical fan-shaped punching sheet stacking welding fixture and positioning method. It includes a base (1), a positioning key (3), a nut (4), two gaskets (5), a dummy shaft (6), and a sliding positioning key (7); the positioning key (3) is installed in a through square groove, the dummy shaft (6) and the sliding positioning key (7) are installed in the left vertical square groove in sequence, the gasket (5) is installed on the positioning shaft of the dummy shaft (6), and then a plurality of fan-shaped punching sheets and another gasket (5) are installed in sequence on the positioning shaft of the dummy shaft (6), and the assembled fan-shaped punching sheet is placed between the positioning key (3) and the sliding positioning key (7) by tightening the nut (4). The present invention solves the problems of the inner hole and angular matching clearance of the product, and the general positioning accuracy of the punching sheet in the fixture. It is suitable for the stacking or welding positioning of fan-shaped slot punching sheets with large angular positioning of the punching sheet shape.

Description

Technical Field

[0001] The invention belongs to the design technology of stacking welding positioning fixture, and in particular relates to a symmetrical fan-shaped punching sheet stacking welding fixture and a positioning method. Background Art

[0002] At present, the lamination and welding of small punching sheets are carried out separately. Figure 1 ) is placed in the inner cavity of a cylinder with the same dimensions and clearance fit as the outer dimensions, and then a dummy shaft with clearance fit to the inner hole of the product is placed, and the punching piece is clamped with the nut on the dummy shaft and then taken out and welded. It is a vertical lamination operation. Since the inner hole and angular fit of the product are clearance fit, the positioning accuracy of the punching piece in the fixture is average. The angular positioning does not apply effective positioning, and the rotor assembly with high requirements for the outer shape of the punching piece assembly cannot be satisfied. This affects the product accuracy. Summary of the invention

[0003] The purpose of the present invention is to design a welding fixture of the present invention in view of the above-mentioned technical problems.

[0004] The technical solution of the present invention is as follows: a symmetrical fan-shaped punching stacking welding fixture, comprising a base 1, a positioning key 3, a nut 4, two gaskets 5, a dummy shaft 6, and a sliding positioning key 7; the base 1 is a right-angled rectangular body structure, a square groove opening upward is provided in the middle of the left vertical surface, and a rectangular through square groove is provided on the bottom surface, the center line of the through square groove is in a straight line with the center line of the square groove on the left vertical surface, and a threaded through hole is provided at the front end of the through square groove; the positioning key 3 is installed in the through square groove, and the dummy shaft 6 and the sliding positioning key 7 are installed in the square groove on the left vertical surface in turn, and the gasket 5 and the dummy shaft 6 are installed on the positioning shaft, and then multiple fan-shaped punchings and another gasket 5 are installed on the positioning shaft of the middle dummy shaft 6 in turn, and the assembled fan-shaped punchings are placed between the positioning key 3 and the sliding positioning key 7 by tightening the nut 4.

[0005] The positioning key 3 and the sliding positioning key 7 cooperate with the contact surface of the assembled sector-shaped punching sheet.

[0006] The positioning key 3 is a T-shaped structure; the right side of the horizontal middle rectangular platform has a circular through hole that is consistent with the position of the base 1, and the lower part of the vertical rectangular platform matches the rectangular square groove of the base 1.

[0007] The upper part of the positioning key 3 has a symmetrical fan-shaped surface that matches the fan-shaped of the punching sheet. The size is processed according to the actual measured fan-shaped groove difference of the punching sheet to assist in the angular positioning of the product component.

[0008] The positioning key 3 is tightly matched with the through square groove.

[0009] The dummy shaft 6 is a columnar step structure, with a symmetrical flat on the large diameter end, a small diameter size that matches the inner hole size of the fan-shaped punching piece, and a thread on the right end that matches the nut 4.

[0010] The sliding positioning key of the middle piece 7 is a stepped rectangular structure, and the small rectangle below is provided with a symmetrical fan-shaped surface that matches the fan-shaped punching piece. The size of the fan-shaped surface is processed according to the actual measured fan-shaped groove difference of the punching piece to achieve precise angular positioning of the punching piece assembly.

[0011] The sliding positioning key 7 can move along the square groove opened on the vertical surface of the base 1 .

[0012] A positioning method for a symmetrical fan-shaped punching stacking welding fixture is provided. A gasket 5, a plurality of fan-shaped punchings, and a gasket 5 are sequentially installed into a dummy shaft 6, and the right side is clamped with a nut 4. The large diameter end of the dummy shaft 6 is placed into the square groove on the left vertical surface of the base 1. The fan-shaped groove on one side of the fan-shaped punching is matched with the upper part of the positioning key 3. Then a sliding positioning key 7 is placed to press the fan-shaped groove on one side of the product, and at the same time, the nut is tightened to compact the fan-shaped punching to complete the stacking process. After the positioning key 3 is fixed to the base 1, the rotation center formed by the dummy shaft 6 must be matched with the size center of the upper and lower surfaces and the left and right surfaces of the base 1. The welding fixture is flipped 90 degrees, positioned and pressed firmly at the fixed position of the welding machine, stacked and welded, and then flipped 180 degrees to weld the other surface at the existing positioning position of the welding machine.

[0013] The position of the combined sector-shaped punching sheet in the fixture is fixed and unique.

[0014] Technical effect of the present invention: The present invention solves the problems of inner hole, angular clearance fit and general positioning accuracy of punching sheets in the fixture through the designed welding fixture; it is suitable for the stacking or welding positioning of fan-shaped groove punching sheets with large angular positioning of the punching sheet shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the punching sheet appearance and component structure;

[0016] Figure 2 It is a schematic diagram of the structure of the stacking welding fixture;

[0017] Figure 3 It is the main view of base 1;

[0018] Figure 4 is a top view of the base 1;

[0019] Figure 5 It is the main view of positioning key 3;

[0020] Figure 6 is a bottom view of the positioning key 3;

[0021] Figure 7 It is the main view of the false axis 6;

[0022] Figure 8 It is the left view of the false shaft 6;

[0023] Fig. 9 is the front view of gasket 5;

[0024] Fig.10 is a cross-sectional view of gasket 5;

[0025] Fig.11 It is the main view of the sliding positioning key 7;

[0026] Fig.12 is a top view of the sliding positioning key 7; DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings:

[0028] like Figure 2-4 As shown, a symmetrical fan-shaped punching stacking welding fixture includes a base 1, a positioning key 3, a nut 4, two gaskets 5, a dummy shaft 6, and a sliding positioning key 7; the base 1 is a right-angled rectangular structure, a square groove opening upward is provided in the middle of the left vertical surface, and a rectangular through square groove is provided on the bottom surface, the center line of the through square groove is in a straight line with the center line of the square groove on the left vertical surface, and a threaded through hole is provided at the front end of the through square groove; the positioning key 3 is installed in the through square groove, and the dummy shaft 6 and the sliding positioning key 7 are installed in the square groove on the left vertical surface in turn, and the gasket 5 and the dummy shaft 6 are installed on the positioning shaft, and then multiple fan-shaped punchings and another gasket 5 are installed on the positioning shaft of the middle dummy shaft 6 in turn, and the nut 4 is tightened to place the combined fan-shaped punching between the positioning key 3 and the sliding positioning key 7, and the positioning key 3 and the sliding positioning key 7 cooperate with the contact surface of the combined fan-shaped punching; the positioning key 3 and the through square groove are tightly matched.

[0029] like Figure 5-6 As shown, the upper part of the positioning key 3 has a symmetrical fan-shaped surface that matches the fan-shaped of the punching sheet. The size is processed according to the actual measured fan-shaped groove difference of the punching sheet to assist in the angular positioning of the product component.

[0030] The dummy shaft 6 is a columnar step structure, with a symmetrical flat on the large diameter end, a small diameter size that matches the inner hole size of the fan-shaped punching piece, and a thread on the right end that matches the nut 4.

[0031] like Figure 11-12 As shown, the sliding positioning key of the middle piece 7 is a stepped rectangular structure, and the small rectangle below is provided with a symmetrical fan-shaped surface that matches the fan-shaped punching piece. The fan-shaped surface size is processed according to the actual measured fan-shaped groove difference of the punching piece to achieve accurate angular positioning of the punching piece assembly. The sliding positioning key 7 can move along the square groove opened on the vertical surface of the base 1.

[0032] A positioning method for a symmetrical fan-shaped punching stacking welding fixture is provided. A gasket 5, a plurality of fan-shaped punchings, and a gasket 5 are sequentially installed into a dummy shaft 6, and the right side is clamped with a nut 4. The large diameter end of the dummy shaft 6 is placed into the square groove on the left vertical surface of the base 1. The fan groove on one side of the fan-shaped punching is matched with the upper part of the positioning key 3, and then a sliding positioning key 7 is placed to press the fan groove on one side of the product, and at the same time, the nut is tightened to compact the fan-shaped punching to complete the stacking process; the position of the combined fan-shaped punching in the fixture is fixed and unique; after the positioning key 3 is fixed to the base 1, the rotation center formed by the dummy shaft 6 must be matched with the size center of the upper and lower surfaces and the left and right surfaces of the base 1, the welding fixture is turned over 90 degrees, positioned and pressed firmly at the fixed position of the welding machine, stacked and welded, and then turned over 180 degrees to weld the other surface at the existing positioning position of the welding machine.

[0033] The above is only a specific embodiment of the present invention. The detailed description of the present invention is conventional technology. However, the protection scope of the present invention is not limited to this. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A symmetrical fan-shaped punching lamination lamination welding fixture, characterized in that: The invention comprises a base (1), a positioning key (3), a nut (4), two washers (5), a false shaft (6), and a sliding positioning key (7); the base (1) is a rectangular body structure, a square groove opening upward is provided in the middle of the left vertical surface, a rectangular through square groove is provided on the bottom surface, the center line of the through square groove is in a straight line with the center line of the square groove on the left vertical surface, and a threaded through hole is provided at the front end of the through square groove; the positioning key (3) is installed in the through square groove, the false shaft (6) and the sliding positioning key (7) are installed on the left vertical surface in sequence. In the vertical square groove, a gasket (5) is installed on the positioning shaft of the dummy shaft (6), and then a plurality of fan-shaped punching sheets and another gasket (5) are installed on the positioning shaft of the dummy shaft (6) in turn, and the assembled fan-shaped punching sheets are placed between the positioning key (3) and the sliding positioning key (7) by tightening the nut (4); the sliding positioning key (7) is a stepped rectangular structure, and the small rectangle below is provided with a symmetrical fan-shaped surface that matches the fan-shaped punching sheet, and the fan-shaped surface size is processed according to the actual measured fan-shaped groove upper difference of the punching sheet, so as to realize the precise angular positioning of the punching sheet assembly.

2. The symmetrical fan-shaped punching lamination lamination welding fixture according to claim 1 is characterized in that: The positioning key (3) and the sliding positioning key (7) are matched with the contact surface of the assembled sector-shaped punching sheet.

3. The symmetrical fan-shaped punching lamination lamination welding fixture according to claim 1 is characterized in that: The positioning key (3) is a T-shaped structure; a circular through hole is provided on the right side of the horizontal middle rectangular platform, which is in the same position as the base (1); and the lower part of the vertical rectangular platform matches the rectangular square groove of the base (1).

4. The symmetrical fan-shaped punching lamination lamination welding fixture according to claim 1 is characterized in that: The upper part of the positioning key (3) has a symmetrical sector-shaped surface matched with the sector of the punching piece, and the size is processed according to the actual measured sector groove difference of the punching piece, which is used for angular auxiliary positioning of the product component.

5. The symmetrical fan-shaped punching lamination lamination welding fixture according to claim 1 is characterized in that: The positioning key (3) is tightly matched with the through square groove.

6. The symmetrical fan-shaped punching lamination lamination welding fixture according to claim 1 is characterized in that: The dummy shaft (6) is a columnar step structure, with a symmetrical milling flattening on the large diameter end, a small diameter size that matches the inner hole size of the fan-shaped punching piece, and a thread on the right end that matches the nut (4).

7. The symmetrical fan-shaped punching lamination lamination welding fixture according to claim 1 is characterized in that: The sliding positioning key (7) can move along the square groove opened on the vertical surface of the base (1).

8. The positioning method of the symmetrical fan-shaped punching lamination stacking welding fixture according to any one of claims 1 to 7, characterized in that: The gasket (5), the fan-shaped punching sheet, and the gasket (5) are sequentially installed into the dummy shaft (6), and the right side is clamped with a nut (4), and the large diameter end of the dummy shaft (6) is inserted into the square groove of the left vertical surface of the base (1), and the fan-shaped groove on one side of the fan-shaped punching sheet is matched with the upper part of the positioning key (3), and then the sliding positioning key (7) is inserted to press the fan-shaped groove on one side of the product, and the nut is tightened to compact the fan-shaped punching sheet, and the stacking process is completed; after the positioning key (3) is fixed to the base (1), the rotation center formed by the dummy shaft (6) must be matched with the size center of the upper and lower surfaces and the left and right surfaces of the base (1), and the welding fixture is turned over 90 degrees, positioned and pressed firmly at the fixed position of the welding machine, and stacked and welded, and then turned over 180 degrees, and the other surface is welded at the existing positioning position of the welding machine.

9. The positioning method of the symmetrical fan-shaped punching lamination stacking welding fixture according to claim 8 is characterized in that: The position of the combined sector-shaped punching sheet in the fixture is fixed and unique.

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