一种大型多列迷宫压缩机曲轴箱轴承座孔的加工方法

Method for machining crankcase bearing seat holes of large multi-column labyrinth compressor

Abstract

The invention discloses a method for machining crankcase bearing seat holes of a large multi-column labyrinth compressor. In the method, small and medium numerical control machine tools and special tools are rationally utilized to machine the crankcase bearing seat holes, and the coaxiality of the machined crankcase bearing seat holes meets technical requirements; and a crankcase of a fixed shapeis involved. Central positions of the bearing seat holes at the left and right ends of the crankcase are determined by scribing; flange end faces are machined on the front and rear sides of the crankcase; and the bottom of the crankcase is supported on the ground. The method is characterized in that: after the bearing seat holes of the crankcase are machined in advance, the selected front/rear lateral surface of each bearing seat hole is taken as a downward reference surface and the crankcase is horizontally placed through an auxiliary cushion block; measurement and control blocks are arranged at the same positions on the outer planes of the bearing seat holes at the left and right ends respectively; the bearing seat holes and the measurement and control blocks are precisely bored; and then the coaxiality of the bearing seat holes at the two ends of the crankcase is ensured by comparing digital values of measured distances between the two measurement surfaces of each measurement and control block at the two ends after the precision boring.
本发明为一种大型多列迷宫压缩机曲轴箱轴承座孔的加工方法。其合理利用中小型数控机床和专用工装加工曲轴箱轴承座孔,保证其同轴度加工后达到技术要求。其包括外形确定的曲轴箱,所述曲轴箱的左右两端的轴承座孔中心位置通过划线确定,所述曲轴箱的前后两侧加工有法兰端面,所述曲轴箱的底部支承于地面上,其特征在于:所述曲轴箱的轴承座孔经过前期预加工后,将选定的前侧/或后侧面作为基准面朝下并通过辅助垫块使得所述曲轴箱水平放置,然后在左右两端轴承座孔外端平面的相同位置装上测控块,精镗轴承座孔和测控块,通过比较精镗后所测得的两端测控块的两测量面的距离的数值来确保曲轴箱两端轴承座孔的同轴度。

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-103032198-AApril 10, 2013光阳工业股份有限公司Crankcase provided with balance shaft
    CN-104079127-AOctober 01, 2014西安航天精密机电研究所Processing method of bearing mounting holes in rotor covers of gyro machine, and fixture