CN103692051A - Copper bar rotor motor welding tool - Google Patents

Abstract

The invention relates to a welding tool. In order to solve the technical problem of the complicated welding process between the copper bar and the end ring of the copper bar rotor motor, the present invention provides a welding tool for the copper bar rotor motor, which includes a rotating platform, which is characterized in that: the rotating platform is provided with a circular table, There is a rotor shaft cavity inside the platform, and a through hole connected with the rotor shaft cavity is provided in the center of the circular table top; a welding gasket is provided on the circular table top, and the welding gasket is a circular ring body. The surface of the body is evenly provided with several support blocks, and an insertion groove is arranged between the bottom of the outer surface of the support block and the circular ring body; it also includes a heat preservation welding torch positioning piece, and the thickness of the heat preservation welding torch positioning piece is less than or equal to the thickness of the insertion groove Height, an Ω-shaped flat iron is provided on the surface of the heat preservation welding torch positioning piece, and the heat preservation welding torch positioning piece is inserted into the aforementioned insertion groove to realize the connection with the welding gasket. The frock has simple and reasonable structure, low manufacturing cost, and convenient operation and maintenance.

Description

A copper bar rotor motor welding tool

technical field

The invention relates to a welding tool, in particular to a tool used for welding between a copper bar and an end ring of a copper bar rotor motor.

Background technique

In the production process of copper bar rotor motor, dozens of copper bars need to be accurately inserted into the rotor iron core, and each of them is tightly welded to the end ring. Under normal circumstances, 2 welding operators are required to operate. One person uses gas welding to maintain the temperature of the welding part, and the other person performs the welding operation. At the same time, it is necessary to frequently change gestures, move the body and even move the welding equipment to weld to the position. As a result, the two welding interruption times are often too long, so that the appearance quality of the welding part is not good, and there may be gaps and cracks inside, so that the product cannot meet the quality requirements. In addition, the rotor needs to be positioned vertically, otherwise it is very easy to damage the processed plane during work. Such production will greatly increase the labor intensity of the operator, and at the same time, the production efficiency is low, laborious and time-consuming, which seriously affects the production cycle of the product.

Contents of the invention

In order to solve the technical problem of the complicated welding process between the copper bar and the end ring of the copper bar rotor motor, the invention provides a copper bar rotor motor welding tool.

The technical solution adopted in the present invention is: a copper bar rotor motor welding tool, including a rotating platform, which is characterized in that: the rotating platform is provided with a circular table top, the inside of the platform is provided with a rotor shaft cavity, and the center of the circular table top is set There is a through hole connected with the rotor shaft cavity; the circular table is provided with a welding washer, the welding washer is a circular ring body, and several support blocks are uniformly arranged on the surface of the circular ring body, and the outer surface of the support block An insertion slot is provided between the bottom of the bottom and the circular ring body; it also includes a heat preservation welding torch positioning piece, the thickness of the heat preservation welding torch positioning piece is less than or equal to the height of the insertion groove, and an Ω-shaped flat iron is arranged on the surface of the heat preservation welding torch positioning piece. The horizontal wing plates on both sides of the Ω-type flat iron are provided with screw holes and are fixed with the positioning piece of the heat preservation welding torch by the screw, and the positioning piece of the heat preservation welding torch is inserted into the aforementioned insertion groove to realize the connection with the welding gasket.

The width of the heat preservation welding torch positioning piece is greater than the gap between the two supporting blocks on the welding gasket.

The through hole on the circular platform is provided with a copper sleeve on the through hole wall.

The rotating platform includes a circular base and a turret. The center of the circular base is provided with a positioning column. The turret includes a circular table top and a circular bottom surface. The edge between the circular table top and the circular bottom surface Several support rods are connected, and a positioning hole is provided in the center of the circular bottom surface, and an angular contact bearing is arranged in the positioning hole. The positioning column on the circular base passes through the positioning hole on the circular bottom surface of the turret, and the turret can be freely turn.

Further, a retaining ring cover is provided at the center of the circular bottom surface, and an indented cavity is provided in the retaining ring cover, and the cylinder of the positioning column exposing the positioning hole is located in the cavity in the retaining ring cover.

The advantages of this tool are simple and reasonable structure, low production cost, convenient operation and maintenance, fast positioning when in use, no need to change the welding position, and one person can complete the operation independently, which saves labor, improves production efficiency, and can effectively save welding costs. , to ensure the welding quality of the copper bar rotor weld bead.

Description of drawings

Attached Figure 1 is a schematic structural diagram of the welding tool in use.

Accompanying drawing 2 is the structural representation of welding washer.

Accompanying drawing 3 is the enlarged schematic diagram of I place in accompanying drawing 2.

Accompanying drawing 4 is the structural schematic diagram of the heat preservation welding torch positioning piece.

Accompanying drawing 5 is the structure diagram of circular base.

Accompanying drawing 6 is the structural representation of turret.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in FIG. 1 , the copper bar rotor motor welding tool includes a rotating platform, and the rotating platform includes a circular base 1 and a turret 2 .

As shown in FIG. 5 , a positioning post 3 is arranged at the center of the circular base 1 .

As shown in accompanying drawing 6, the turret 2 comprises a circular table top 4 and a circular bottom surface 5, and the circular table top 4 and the circular bottom surface 5 are connected by a plurality of supporting rods 6 on the edge. Positioning hole 7.

As shown in accompanying drawing 1, angular contact bearing 8 is arranged in the positioning hole, and the positioning column 3 on the circular base passes through the positioning hole 8 on the circular bottom surface of the turret, and the turret 2 can rotate freely.

As shown in Figure 1, the cavity formed by the circular table top 4, the circular bottom surface 5 and the support rod 6 is used as the rotor shaft cavity 9, and a through hole is provided in the center of the circular table top 4, and the rotor shaft extends through the circle. The through hole on the shaped platform 4 can be inserted into the rotor shaft cavity 9.

As shown in FIG. 1 , a welding washer 10 is provided on the circular platform 4 . The structure of welding washer 10 is shown in accompanying drawing 2, and welding washer 10 is a circular ring body, and the surface of circular ring body is evenly provided with several supporting blocks 11, and it can be seen in conjunction with accompanying drawing 3, on the outer surface of supporting block 11 An insertion groove 12 is provided between the bottom and the circular ring body.

As shown in FIG. 1 , the heat preservation welding torch 13 is fixed on the welding gasket 10 through the heat preservation welding torch positioning piece 14 . The structure of heat preservation welding torch positioning piece 14 is shown in accompanying drawing 4, is provided with a Ω type flat iron 15 on the surface of heat preservation welding torch positioning piece 14, is provided with screw hole on the horizontal wing plate 16 on both sides of Ω type flat iron and is connected with heat preservation by screw. The positioning piece of the welding torch is fixed. The thermal insulation welding torch positioning piece 14 is inserted into the insertion groove 12 on the welding gasket 10 to realize the connection with the welding gasket, so when making, the thickness of the thermal insulation welding torch positioning piece 14 should be less than or equal to the height of the insertion groove 12 so that the thermal insulation welding torch positioning piece 14 able to insert. As shown in accompanying drawing 1, during use, heat preservation welding torch 13 is positioned in the space between two support blocks 11 on the welding gasket 10, so when making, the width of heat preservation welding torch positioning piece 14 is greater than the gap between the two support blocks on the welding gasket 10. The gap allows the Ω-shaped flat iron to be located in the gap between the two support blocks 11 on the welding washer 10 to ensure that the muzzle of the heat preservation welding torch 13 can be aligned with the end ring 17 .

During the welding operation, as shown in Figure 1, the rotor 19 with the copper bar 18 and the end ring 17 installed is lifted by an electric hoist, and the rotor shaft is inserted into the rotor shaft cavity 9 through the through hole on the circular table surface. The rotor 19 is pressed on the support block 11 on the welding washer 10, and the heat preservation welding torch positioning piece 14 is inserted into a suitable insertion groove 12. The heat preservation welding torch 13 is fixed on the heat preservation welding torch positioning piece 14 through the Ω-shaped flat iron 15, and the muzzle Align the end ring 17, ignite the heat preservation welding torch, adjust it to a suitable size, preheat the welding part, and use the gas welding torch 20 to melt the silver-zinc electrode so that it can evenly flow and fill the gap between the copper strip 18 and the end ring 17 , Adjust the size of the heat preservation welding torch 13 to keep the welding part slowly cooling, prevent excessive cooling from causing cracks in the weldment due to excessive thermal stress, or produce pores due to excessive solidification of the brazing seam so that the gas has no time to escape. After one spot is welded, the operator does not need to move his body, just turn the turntable and move the welding torch up and down to weld each copper bar one by one.

In order to prevent the rotor shaft from scratching the machined mating surface of the motor shaft when passing through the through hole on the circular table, as shown in Figure 1, the through hole on the circular table has a copper plate on the wall of the through hole. Set of 21.

As shown in Figure 1, the center of the circular bottom surface 5 of the turret 2 is provided with a retaining ring cover 22, and the retaining ring cover is provided with an indented cavity, and the cylinder of the positioning column 3 exposing the positioning hole 7 is located in the retaining ring cover. In the cavity inside, adopting this setting can effectively prevent dust and the like from entering the angular contact bearing 8 in the positioning hole, so as to ensure the smooth rotation of the turret.

In this embodiment, a structure of a rotating platform is introduced in detail, which includes a circular base 1 and a rotating frame 2 . According to the description of the use process, in addition to the above structure, the rotating platform can also adopt other conventional designs in the mechanical field, as long as there is a cavity for the rotor shaft to be inserted inside the platform, an insertion hole is provided on the top table of the platform and the platform can rotate freely. Realize the above functions.

Claims (5)

1. a copper bar rotor motor welding tooling, comprises a rotatable platform, it is characterized in that: this rotatable platform is provided with a round table surface, and platform inside is provided with rotor axocoel, is provided with the through hole connecting with rotor axocoel at the center of round table surface; Described round table surface is provided with welding packing ring, and welding packing ring is a circular ring body, at the surface uniform of circular ring body, is provided with some back-up blocks, between the bottom of back-up block lateral surface and circular ring body, is provided with insertion groove; Also comprise insulation welding gun spacer, the thickness of described insulation welding gun spacer is less than or equal to the height of insertion groove, insulation welding gun spacer surface is provided with a Ω type band iron, the horizontal wing plate of Ω type band iron both sides is provided with screw and fixes by screw and insulation welding gun spacer, and insulation welding gun spacer is inserted into the interior realization of aforesaid insertion groove and welds being connected of packing ring.

2. a kind of copper bar rotor motor welding tooling according to claim 1, is characterized in that: the width of described insulation welding gun spacer is greater than the space between two back-up blocks on welding packing ring.

3. a kind of copper bar rotor motor welding tooling according to claim 1, is characterized in that: the through hole on described round table surface, its through-hole wall is provided with copper sheathing.

4. a kind of copper bar rotor motor welding tooling according to claim 1, it is characterized in that: described rotatable platform comprises cup dolly, rotating turret, the center of described cup dolly is provided with locating dowel, described rotating turret comprises round table surface and rounded bottom surface, the some support bars by edge between round table surface and rounded bottom surface are connected, center at rounded bottom surface is provided with locating hole, in locating hole, be provided with angular contact bearing, locating dowel on cup dolly is through the locating hole on rotating turret rounded bottom surface, and rotating turret is free to rotate.

5. a kind of copper bar rotor motor welding tooling according to claim 4, is characterized in that: described rounded bottom surface center is provided with back-up ring cover, is provided with the cavity caving in back-up ring cover, and the cylinder that described locating dowel is exposed locating hole is positioned at the cavity of back-up ring cover.

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