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气缸体曲轴止推面有半支承和全支承两种结构,支承有的在端部,有的在中部.随着结构及位置不同.采用的工艺也不同.有的用偏心镗杆车削,有的用两把双面刃铣刀铣削,有的用行星铣床铣削,对产量不大的也有用卧式镗床车削的.一汽曲轴止推面在气缸体端部,全支承结构,采用专用行星铣床铣削.二汽曲轴止推面在气缸体中部,半支承结构,在DX6型自动线的C_3、C_4机床上进行半精和精铣,加工情况如图32所示.该线由六台机床组成,
Cylinder block thrust surface of the crankshaft has a half-bearing and full support of the two structures, bearing some at the end, and some in the middle. With the structure and location of different using different processes. Some use eccentric boring bar turning, there are With two double-edged milling cutter, and some milling with planetary milling machine, the output is not useful horizontal boring machine turning. FAW crankshaft thrust surface at the cylinder body end, full support structure, the use of special planetary milling machine Milling. Two-steam crankshaft thrust surface in the middle of the cylinder block, semi-supporting structure, in the DX6 automatic C_3, C_4 machine for semi-fine and fine milling, processing as shown in Figure 32. The line consists of six machine tools,