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Machining process of automotive starter motor cases

A technology for starting motors and processing technology, which is applied in the direction of metal processing equipment, perforating tools, manufacturing tools, etc., which can solve the problems of numerous processing equipment, reduced starting efficiency, and high manufacturing cost, so as to improve automation level and work efficiency, and reduce residual magnetism coefficient, effect of low cost

Inactive Publication Date: 2013-08-28
CHONGQING LINZHENG MACHINERY
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] (1) The traditional machining process involves a lot of processing equipment and cumbersome process, resulting in low processing efficiency, high manufacturing cost and high price;
[0005] (2) The existing seamless steel pipe has a high carbon content (up to 20%), which will lead to serious magnetic loss of the motor, and gradually reduce the starting efficiency until it fails;
[0006] (3) The traditional processing technology has low precision, poor consistency and high scrap rate

Method used

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  • Machining process of automotive starter motor cases
  • Machining process of automotive starter motor cases
  • Machining process of automotive starter motor cases

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Embodiment Construction

[0038] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0039] Such as Figure 4 ——The housing of the starter motor for vehicles shown in 7 is a cylinder with welded seams F rolled from hot-rolled steel plates, and four radial holes A uniformly distributed in the circumferential direction are punched on the cylinder for installing magnets. Steel, and the outer end of each radial hole A is provided with a chamfer. A left positioning round platform B is arranged on the outer circumference of the left end of the cylinder, and a left positioning notch C is punched on the left positioning round platform B. A right positioning round table D is arranged on the outer circumference of the right end of the cylinder, and a right positioning notch E is punched on the right positioning round table D. The number of radial holes A is not limited to four, and can be set as required. The left positioning round table B and the r...

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Abstract

The invention discloses a machining process of automotive starter motor cases. The process includes the steps of blanking, punching to obtain welding process positioning notches, pre-bending to obtain U shapes before rolling, performing argon arc welding, performing precision cold extrusion and shaping, punching to obtain two punching process positioning notches, turning to obtain two positioning cone frustums, punching steel magnet holes, and chamfering the steel magnet holes. Compared with the traditional method of machining starter motor cases with seamless steel pipes, the machining process has the advantages of convenience in machining, low production cost, fine uniformity, long service life and the like.

Description

technical field [0001] The invention relates to a shell processing method for a starter motor of a car and a mini-car, belonging to the field of mechanical processing technology. Background technique [0002] The automobile starter motor is an excitation motor, which is an important part of the automobile engine, and the starter motor housing is the main part to ensure the performance of the excitation motor. [0003] The shell of the starter motor is cylindrical, and the shell of the traditional starter motor is made of seamless steel pipes through machining. The main problems are: [0004] (1) The traditional machining process involves a lot of processing equipment and cumbersome process, resulting in low processing efficiency, high manufacturing cost and high price; [0005] (2) The existing seamless steel pipe has a high carbon content (up to 20%), which will lead to serious magnetic loss of the motor, and gradually reduce the starting efficiency until it fails; [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21D28/28B21D28/34
Inventor 钟林正
Owner CHONGQING LINZHENG MACHINERY
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