Light-weight spliced stator assembly circle welding tool

Abstract

The utility model discloses a light-weight spliced stator group circle welding tool which comprises a positioning device and a welding hoop, the welding hoop is sleeved outside the positioning device, and an assembling space of a stator iron core is defined between the welding hoop and the positioning device. The welding hoop is composed of two connecting hoops and a plurality of positioning columns, and a welding seam is formed between every two positioning columns. The two connecting hoops are distributed up and down, and the plurality of positioning columns are uniformly distributed between the two connecting hoops; a weight reduction assembly is arranged on the outer surface of the positioning column and comprises two V-shaped grooves which are oppositely arranged and a weight reduction groove group which is arranged on the side surface of the positioning column between the two V-shaped grooves; and the weight reduction groove group is beneficial to reducing the overall weight of the welding hoop, so that the burden of carrying the welding hoop and the spliced stator into welding equipment by an operator is reduced, and the efficiency is improved while the physical strength is saved.

Description

Technical Field

[0001] The utility model relates to a lightweight block stator assembly welding tool. Background Art

[0002] The stator of a permanent magnet motor is assembled using a modular assembly method, which increases the stator's slot fill rate, thereby improving the motor's power density and reducing its cost. Traditional modular stator assembly is difficult, and requires two sets of tooling for assembly and welding, resulting in low assembly efficiency and increased labor costs. Furthermore, to ensure structural strength and rigidity, traditional welding tooling stacks a large amount of material without optimizing the structure itself, resulting in heavier tooling. This is especially true as the motor grows in size, as the tooling increases in size and weight, significantly consuming the operator's physical strength and impacting efficiency. Utility Model Content

[0003] In response to the above problems, the purpose of the present utility model is to provide a lightweight block stator assembly circular welding tool, which is used to improve the block stator assembly efficiency, reduce the weight of the welding tool, and solve the technical problems of low block stator assembly efficiency, high cost and heavy welding tooling in the existing block stator.

[0004] The technical solution for realizing the present utility model is as follows

[0005] A lightweight stator assembly welding tool includes a positioning device and a welding hoop. The welding hoop is mounted outside the positioning device, and the assembly space of the stator core is surrounded by the welding hoop and the positioning device. The welding hoop is composed of two connecting hoops and multiple positioning posts, and a weld is formed between each two positioning posts. The two connecting hoops are arranged one above the other, and the multiple positioning posts are evenly distributed between the two connecting hoops. A weight-reducing component is provided on the outer surface of the positioning post, and the weight-reducing component includes two V-shaped grooves arranged opposite to each other and a weight-reducing groove group provided on the side of the positioning post between the two V-shaped grooves.

[0006] The weight-reducing slot group includes a first through slot located in the center and two second through slots arranged opposite to each other on both sides of the first through slot.

[0007] A first positioning step is provided below the inner surface of the positioning column.

[0008] A positioning rib is provided in the center of the inner surface of the positioning column, and the positioning rib extends from the top surface of the positioning column to the first positioning step.

[0009] The mounting surfaces of the connecting hoop and the positioning column are each provided with a plurality of positioning holes, and the positioning holes correspond to the positioning columns one by one; and the end surfaces of both ends of the positioning columns are each provided with an insert that can be inserted into the corresponding positioning holes.

[0010] The outer surface of the connecting hoop opposite to the mounting surface is respectively provided with a first chamfered surface and a second chamfered surface. The first chamfered surface is located on the inner edge of the outer surface, and the second chamfered surface is located on the outer edge of the outer surface.

[0011] A second positioning step is provided in the positioning hole.

[0012] The positioning device comprises a base, a positioning boss and a positioning cylinder which are sequentially connected and can be inserted into the welding hoop; the positioning boss is concentric with the welding hoop.

[0013] A hollow cylinder is provided on the bottom surface of the base.

[0014] The above technical solution is adopted. 1. The weight-reducing slot group helps to reduce the overall weight of the welding hoop, thereby reducing the burden on operators to carry the welding hoop and the rounded stator to the welding equipment, saving physical effort while improving efficiency;

[0015] 2. The stator block assembly welding fixture has a simple structure and can complete two processes of assembly and welding through one set of fixture, thereby effectively improving the assembly efficiency of the stator block and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of a welding hoop of the present utility model;

[0018] Figure 3 This is a schematic diagram of a positioning column of the utility model;

[0019] Figure 4 This is a first schematic diagram of the connecting hoop of the present invention;

[0020] Figure 5 This is a second schematic diagram of the connecting hoop of the present invention;

[0021] Figure 6 This is a first schematic diagram of the positioning device of the present utility model;

[0022] Figure 7 This is a second schematic diagram of the positioning device of the present utility model;

[0023] Figure 8 It is a schematic diagram of the stator core of the utility model;

[0024] 1 is a welding hoop, 2 is a positioning device, 3 is a connecting hoop, 4 is a positioning column, 5 is a weld, 6 is a positioning rib, 7 is a first positioning step, 8 is a weight reduction component, 9 is a first chamfered surface, 10 is a second chamfered surface, 11 is a positioning hole, 12 is a second positioning step, 13 is a base, 14 is a positioning boss, 15 is a positioning cylinder, 16 is a third chamfered surface, 17 is a hollow cylinder, 18 is an iron core positioning groove, 19 is a bottom surface of the stator core, 20 is an outer surface of the stator core, 21 is an inner surface of the stator core, 22 is a first end face of the connecting hoop, and 23 is an inner surface of the positioning column. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1 The schematic diagram of the structure of the present application shows a lightweight block stator assembly welding tool, including a positioning device and a welding hoop 1. The welding hoop is mounted on the outside of the positioning device 2, and the assembly space of the stator core is surrounded by the welding hoop and the positioning device. The welding hoop is composed of two connecting hoops 3 and multiple positioning columns 4, and a weld 5 is formed between each two positioning columns. The two connecting hoops are arranged one above the other, and the multiple positioning columns are evenly distributed between the two connecting hoops. A weight reduction component 8 is provided on the outer surface of the positioning column. The weight reduction component includes two V-shaped grooves arranged opposite to each other and a weight reduction groove group provided on the side of the positioning column between the two V-grooves. The designed V-grooves and the weight reduction groove group between the V-grooves play a weight reduction role. Due to the large number of positioning columns, the weight of the tool is reduced while ensuring that the working load is met. The structure itself is optimized to reduce the overall weight of the welding hoop, which is convenient for subsequent installation.

[0027] The weight-reducing slot group includes a first through slot located in the center and two second through slots arranged opposite to each other on both sides of the first through slot.

[0028] A first positioning step is provided below the inner surface 23 of the positioning column. The positioning step limits the stator core bottom surface 19, ensuring that the stator core maintains a consistent height after rounding, thereby improving welding quality. The weight-reducing slot group reduces weight, ensuring that the weight of the tooling is reduced while meeting the working load.

[0029] A positioning rib 6 is provided in the center of the inner surface of the positioning column, extending from the top surface of the positioning column to the first positioning step 7. The positioning rib can cooperate with the core positioning groove 18 on the outer surface 20 of the stator core to play a positioning role during the rounding process.

[0030] The mounting surface where the connecting collar and the positioning post are mounted is provided with a plurality of positioning holes 11, each corresponding to a corresponding positioning post. Inserts are provided on both ends of the positioning post for insertion into the corresponding positioning holes. The positioning holes can be interference-fitted with the positioning post to form the welding collar. The welding collar can also be integrally formed using 3D printing, shortening manufacturing time.

[0031] The outer surface of the connecting hoop opposite the mounting surface is provided with a first chamfered surface 9 and a second chamfered surface 10, respectively. The first chamfered surface is located on the inner edge of the outer surface, and the second chamfered surface is located on the outer edge of the outer surface. The connecting hoop has the first chamfered surface and the second chamfered surface. The first chamfer facilitates the insertion of the stator core, while the second chamfer provides protection, preventing operators from contact with sharp surfaces and reducing the weight of the structure.

[0032] A second positioning step 12 is provided in the positioning hole, and the second positioning step 12 is used to limit the axial position of the positioning column.

[0033] The positioning device includes a base 13, a positioning boss 14 and a positioning cylinder 15 that can be inserted into the welding hoop, which are connected in sequence; the positioning boss 14 is concentric with the welding hoop. The diameter of the base is larger than the outer diameter of the welding hoop 1, which is convenient for disassembly after the rounding is completed. The diameter of the positioning cylinder 15 is equal to the diameter of the inner surface 21 of the stator core, and the diameter of the outer surface 20 of the stator core is equal to the inner diameter of the welding hoop 1, so as to ensure the cylindricity of the stator core after the rounding. The diameter of the positioning boss is equal to the inner diameter of the welding hoop, which is used for positioning to ensure that the positioning boss is concentric with the welding hoop; wherein the top of the positioning cylinder 15 has a third chamfered surface 16 to facilitate the insertion of the stator core;

[0034] A hollow cylinder 17 is provided on the bottom surface of the base to reduce the weight of the positioning device.

[0035] Here is the specific working process:

[0036] First, place the positioning device 2 on the workbench, and then put the welding hoop 1 on the positioning device 2 from top to bottom, wherein the outer surface of the positioning boss 14 coincides with the inner surface of the welding hoop 1 to limit the radial movement of the welding hoop 1, and the base 13 contacts the first end face 22 of the connecting hoop to limit the axial movement of the welding hoop 1. Next, insert the stator core from top to bottom, wherein the inner surface 21 of the stator core coincides with the surface of the positioning cylinder 15, the outer surface 20 of the stator core coincides with the inner surface 23 of the positioning column, and the core positioning groove 18 coincides with the surface of the positioning rib 6, thereby achieving the purpose of core circular positioning. In addition, the first chamfered surface 9 and the third chamfered surface 16 can both be square. To facilitate the insertion of the stator core, when the core is inserted into the welding hoop 1, the positioning steps 7 in the positioning column 4 can make the bottom surface 19 of the stator core at the same height, thereby improving the welding quality, and the design of the weight reduction component 8 is conducive to reducing the overall weight of the welding hoop 1, thereby reducing the burden on the operator to carry the welding hoop 1 and the rounded stator to the welding equipment, saving physical strength and improving efficiency. After the welding hoop 1 and the rounded stator are carried to the welding equipment, the welding equipment is started, and the welding laser beam can pass through the welding hoop 1 through the weld seam 5, thereby welding the stator. The weight reduction component 8 can ensure the strength and rigidity of the structure, so that the welding hoop 1 can fix and protect the stator during the welding process.

Claims

1. A lightweight stator block assembly welding tool, characterized in that: It includes a positioning device and a welding hoop, which is sleeved on the outside of the positioning device, and the assembly space of the stator core is surrounded by the welding hoop and the positioning device; the welding hoop is composed of two connecting hoops and multiple positioning columns, and a weld is formed between each two positioning columns; the two connecting hoops are distributed one above and one below, and the multiple positioning columns are evenly distributed between the two connecting hoops; a weight-reducing component is provided on the outer surface of the positioning column, and the weight-reducing component includes two V-shaped grooves arranged opposite to each other and a weight-reducing groove group provided on the side of the positioning column between the two V-shaped grooves.

2. The lightweight stator block assembly welding tool according to claim 1, characterized in that: The weight-reducing slot group includes a first through slot located in the center and two second through slots arranged opposite to each other on both sides of the first through slot.

3. The lightweight stator block assembly welding tool according to claim 1, characterized in that: A first positioning step is provided below the inner surface of the positioning column.

4. The lightweight stator block assembly welding tool according to claim 1, characterized in that: A positioning rib is provided in the center of the inner surface of the positioning column, and the positioning rib extends from the top surface of the positioning column to the first positioning step.

5. The lightweight stator block assembly welding tool according to claim 1, characterized in that: The mounting surfaces of the connecting hoop and the positioning column are evenly distributed with a plurality of positioning holes, and the positioning holes correspond one to one with the positioning columns; the end surfaces at both ends of the positioning columns are both provided with plugs that can be inserted into the corresponding positioning holes.

6. The lightweight stator block assembly welding tool according to claim 1, characterized in that: A first chamfered surface and a second chamfered surface are respectively provided on the outer surface of the connecting hoop opposite to the mounting surface. The first chamfered surface is located on the inner edge of the outer surface, and the second chamfered surface is located on the outer edge of the outer surface.

7. The lightweight stator assembly welding tool according to claim 5, characterized in that: A second positioning step is provided in the positioning hole.

8. The lightweight stator block assembly welding tool according to claim 1, characterized in that: The positioning device comprises a base, a positioning boss and a positioning cylinder which are sequentially connected and can be inserted into the welding hoop; the positioning boss is concentric with the welding hoop.

9. The lightweight stator block assembly welding tool according to claim 8, characterized in that: A hollow cylinder is provided on the bottom surface of the base.

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