Fine boring machining method of large motor seat

Abstract

The invention relates to the field of machining, in particular to a fine boring machining method of a large motor seat. The fine boring machining method comprises the following steps that a high-accuracy locating mould is used on a boring machine for locating through bottom foot planes and bottom foot holes, a dial indicator is used for beating bouncing of the end faces of the two ends of the motor seat, a first spigot, a second spigot and an iron core, the position of the locating mould and a fine adjustment screw are adjusted to achieve alignment on the motor seat, and it is guaranteed thatthe first spigot, the second spigot and the iron core of the motor seat have the enough machining quantity. According to the fine boring machining method, a high-accuracy mould plate is used for locating through the bottom foot planes and the bottom foot holes, the high dimensional accuracy of the center of the motor seat is guaranteed accurately, and the depth of parallelism of the center of themotor seat and the bottom foot planes is guaranteed; and in the production process, finish machining can be completed through one-time clamping, the concentricity of the spigots and the iron core of the motor seat can be guaranteed, the bouncing requirement of the end faces of the motor seat for the spigots is guaranteed, the dimensional accuracy and roughness accuracy of the motor seat are greatly improved, the production efficiency is improved, and the fine boring machining method is suitable for volume production.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a fine boring processing method for a large motor base. Background technique [0002] Changfeng series and other large-scale motor frames are processed on both end faces, seams and cores on vertical lathes. Leave a certain margin after the end face and inner circle of the machine base are rough-turned, and use the spigot tire to position the finish car to the drawing size, and then use the spigot tire to position and mill and drill the foot on the milling machine. The processing process is: rough turning-finish turning-milling, drilling foot-planing keyway-drilling. If the wind power series and other large motor bases adopt the above processing method, due to the poor positioning accuracy of the spigot tire, it is easy to cause inaccurate positioning accuracy. In addition, the shape and weight of the base are relatively large, especially when the total length is too long and...

AI Technical Summary

Problems solved by technology

If the wind power series and other large motor bases adopt the above processing method, due to the poor positioning accuracy of the spigot tire, it is easy to cause inaccurate positioning accuracy. In addition, the shape and weight of the base are relatively large, especially when the total length is too long and the base is in an upright state. Difficult clamping, poor stability, easy to cause uneven turning stress distribution

Therefore, the overall dimensional accuracy and runout accuracy of the machine base are not easy to meet the requirements of the product drawings. In addition, the front and rear feet of the machine base are prone to inclination when milling and drilling the feet.