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中型高压异步电动机(H355～500)机座统一为箱式板焊结构。定子铁心为外压装吊入式或压入式。我厂试制的机座为外压装吊入式。这种结构刚性较差,我厂机座加工习惯都是用立车加工,如要改用卧镗加工,要涉及设备和经费等问题。能否仍采用立车加工来达到设计要求呢,经反复验证证明立车加工是可行的。现将我厂试制的Y250kW、YR450kW、YR560kW三种规格的中型Y新系列电动机用立车加工的经验介绍如下。
Medium-sized high-voltage asynchronous motor (H355 ~ 500) chassis for a unified box-welded structure. Stator iron core is pressed into the type of pressure or pressure. Our trial-making machine base for the external pressure mounted hanging type. The rigidity of this structure is poor, I plant machining habits are used vertical lathe processing, such as to use horizontal boring processing, to be involved in equipment and funding issues. Can still use vertical car processing to meet the design requirements, after repeated verification that vertical lathe processing is feasible. Now I trial trial of Y250kW, YR450kW, YR560kW three kinds of medium-sized Y series of electric motor with vertical lathe machining experience described below.