Steel bushing inlay casting method for motor casing front and rear end covers and front and rear end covers

Abstract

The invention discloses a steel bushing inlay casting method for motor casing front and rear end covers. The method comprises the steps that 1 a steel sleeve is manufactured; 2 the steel sleeve is heated through high-frequency plasma; 3 the steel sleeve is placed into a lower mold of a low-pressure casting apparatus and positioned, molten aluminum is injected into a mold from bottom to top, and the steel sleeve is covered with molten aluminum; and 4 a separation line is formed between the steel sleeve and an end cover. The invention further discloses the motor casing front and rear end covers. Compared with front and rear end covers of a permanent magnet servo motor of an existing new energy automobile, the motor casing front and rear end covers are cast with aluminum alloy under low pressure and are formed at one time, and the motor casing front and rear end covers have smooth appearance and clear arcs; because the steel sleeve is inlaid in a bearing, the problem that a bearing deforms due to heat is solved, the hardness of a bearing position is increased, and weight is reduced by 40% compared with an integrally machined steel part or a ball iron part; and a machine base is made of the same aluminum alloy as the end covers, the aluminum alloy has a better heat dissipation effect than steel parts, the motor has an attractive appearance, and labor cost is reduced by 20%.

Description

technical field [0001] The invention relates to the technical field of preparation of motor casing end covers, in particular to a casting method for inserting steel sleeves at the front and rear end covers of a motor casing, and the front and rear end covers implementing the preparation method. Background technique [0002] The front and rear end covers of the traditional motor housing are formed by steel plate processing and ductile iron casting. The processing cost is high, the process is complicated, the product is bulky, and the heat dissipation effect is not good. The inlaid steel sleeve is cast with the sand core used to cast the end cover of the electric vehicle motor, and the process is complicated. Contents of the invention [0003] This invention is aimed at the deficiencies of the current technology, and provides a casting method for inserting steel sleeves at the front and rear end covers of the motor housing. It is formed once, and the product has a smooth app...

AI Technical Summary

Problems solved by technology

[0003] This invention is aimed at the deficiencies of the current technology, and provides a casting method for inserting steel sleeves on the front and rear end covers of the motor casing. The product is formed at one time, with smooth appearance and clear arcs. Steel sleeves are inserted at the bearing position to solve the problem of deformation of the bearing position when the bearing is heated. , increasing the hardness of the bearing

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