Stamping technology for motor shell of new energy automobile

A technology for new energy vehicles and motor casings, applied in the manufacture of motor generators, electrical components, electromechanical devices, etc., can solve the problems of high-strength steel stamping performance degradation, affecting process costs, large forming force, etc., to a fine level The effect of improving uniformity, enhancing surface and internal mechanical properties, and increasing strength

Active Publication Date: 2018-08-07
徐州朗华机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of high-strength steel plates can achieve light weight, but the stamping performance of high-strength steel plates is reduced, requiring a large forming force, and the springback is serious, which greatly affects the process cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A stamping process for a new energy vehicle motor casing, comprising the following steps:

[0023] (1) Billet softening: take an aluminum alloy billet, forge or cast it to form a rough billet, put it into a normalizing furnace, and heat it to a temperature of 545°C; the aluminum alloy used for the aluminum alloy billet is a heat-treated deformed aluminum alloy or cast Aluminum alloy, preferably one of aluminum alloy grades 6061, 6063, ZL101, ZL115, ZL201, ZL203;

[0024] (2) Stretching and one-time stamping: (1) the rough blank is placed in an inert hot atmosphere protection environment, maintaining a cooling rate of 7°C / min; Stretching, and then pass the rough blank between the die and the punch, and stamp the main structure of the motor casing to form a rough blank. The total operation time of this step is controlled within 8~15min;

[0025] (3) Secondary stamping: Keep the heat preservation environment at 495°C, send the rough blank to the die and punch for processi...

Embodiment 2

[0030] A stamping process for a new energy vehicle motor casing, comprising the following steps:

[0031] (1) Billet softening: take an aluminum alloy billet, forge or cast it to form a rough billet, put it into a normalizing furnace, and heat it to a temperature of 520°C; the aluminum alloy used for the aluminum alloy billet is a heat-treated deformed aluminum alloy or cast Aluminum alloy, preferably one of aluminum alloy grades 6061, 6063, ZL101, ZL115, ZL201, ZL203;

[0032] (2) Stretching and one-time stamping: (1) the rough blank is placed in an inert hot atmosphere protection environment, and the cooling rate is maintained at 8°C / min; after that, the blank is first carried out with a tractor at a speed of 45~70m / min. Stretching, and then pass the rough blank between the die and the punch, and stamp the main structure of the motor casing to form a rough blank. The total operation time of this step is controlled within 8~15min;

[0033] (3) Secondary stamping: keep the he...

Embodiment 3

[0038] A stamping process for a new energy vehicle motor casing, comprising the following steps:

[0039] (1) Billet softening: take an aluminum alloy billet, forge or cast it to form a rough billet, put it into a normalizing furnace, and heat it to a temperature of 565°C; the aluminum alloy used for the aluminum alloy billet is a heat-treated deformed aluminum alloy or cast Aluminum alloy, preferably one of aluminum alloy grades 6061, 6063, ZL101, ZL115, ZL201, ZL203;

[0040] (2) Stretching and one-time stamping: (1) the rough blank is placed in an inert hot atmosphere protection environment, and the cooling rate is maintained at 5°C / min; after that, the blank is first carried out with a tractor at a speed of 45~70m / min. Stretching, and then pass the rough blank between the die and the punch, and stamp the main structure of the motor casing to form a rough blank. The total operation time of this step is controlled within 8~15min;

[0041] (3) Secondary stamping: Keep the he...

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PUM

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Abstract

The invention discloses a stamping technology for a motor shell of a new energy automobile. The technology comprises the following steps that (1) a blank is softened, specifically, the aluminum alloyblank is heated and softened in a normalizing furnace; (2) stretching and primary stamping are carried out, specifically, the blank is stretched in a thermal environment by using a traction machine and then is put into the position between a female die and a male die to be stamped so as to form a rough blank; (3) secondary stamping is carried out, specifically, under the heat preservation condition, the rough blank is sent to the position between the female die and the male die to be machined so as to form a fine blank; (4) quenching is carried out, specifically, quenching is carried out on the fine blank; (5) heat treatment is carried out, specifically, T4 heat treatment is carried out on the fine blank; and (6) fine treatment is carried out, specifically, finish milling is carried out onthe footing surface of the fine blank, deburring is carried out, and the outer surface is ground so as to obtain a new finished product. The technology has the advantages that a traditional motor shell manufacturing technology is replaced, the obtained finished product of the aluminum alloy motor shell is excellent in mechanical performance, the strength of the aluminum alloy motor shell is improved by 10% or more compared with the strength of an aluminum alloy corresponding to a traditional grade, and the aluminum alloy motor shell is high toughness, resistant to surface wear, light in weight and particularly suitable for long-term use of the new energy motor shell.

Description

technical field [0001] The invention belongs to the field of new energy automobile accessories, and in particular relates to a stamping process for a motor casing of a new energy automobile. Background technique [0002] In recent years, new energy vehicles including pure electric vehicles and hybrid vehicles have emerged as the times require, and combined with high-performance drive motors and the integration of control technology, energy storage technology, and material technology, the high efficiency and high efficiency of electric vehicles in real life have been brought into play. Environmental protection, energy saving, light and so on. Electric vehicles have solved the energy crisis and environmental pollution. In the process of technological innovation, they have made great contributions to alleviating the financial crisis of the global automobile industry and energy and environmental problems. [0003] Reducing the weight of the body and ensuring the strength are th...

Claims

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Application Information

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IPC IPC(8): B23P15/00H02K15/14
CPCB23P15/00H02K15/14
Inventor 沈钧
Owner 徐州朗华机械有限公司
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