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用中心架加工细长轴,在传统工艺方法中,由于中心架支承下的工件旋转,均为滑动摩擦,极易产生摩擦过热。当支承毛坯工件时,工件表面比较粗糙,圆度较差,中心架支承爪极易磨损,同时又有剧烈的跳动;当支承已加工好的工件表面时,中心架支承爪又易擦伤、拉毛、咬坏工件表面,影响了加工质量和表面粗糙度。针对上述问题,我们对中心架进行了改进,设计了可调套筒或滚动轴承中心架,用滚动摩擦替代了普通中心架的滑动摩擦,解决了传统工艺方法中的弊病。可调套筒式滚动轴承中心架的结构见附图。它由
With the central frame processing slender shaft, in the traditional process, due to the rotation of the workpiece support under the center frame, are sliding friction, prone to friction overheating. When supporting the blank workpiece, the workpiece surface is rough, the roundness is poor, the center frame support claw is very easy to wear, and there are violent beatings; when the workpiece has been machined surface, the center frame support claws are easy to scratch, Pulling, bite the workpiece surface, affecting the processing quality and surface roughness. In order to solve the above problems, we improved the center frame, designed the adjustable centering frame of the sleeve or the rolling bearing, replaced the sliding friction of the common center frame with the rolling friction, and solved the disadvantages in the traditional process. Adjustable sleeve roller bearing center frame structure shown in the drawings. It consists of