我厂用一台TT4242镗孔车端面头车削曲轴箱止推轴承面。在试切削过程中发现加工平面有一圈因走刀不匀而产生的“鼓肚”。分析其走刀不匀的原因有二:其一是走刀齿条轴的转动接头处止推轴承轴向间隙没有消除;其二是齿轮与齿条间有啮合间隙。我们用下述方法检验并消除啮合间隙后,“鼓肚”消除,加工表面光洁度可达6。现介绍于下,供参考。 检验溜板齿条与齿轮的啮合间隙。刀盘如图1所示放置,刀盘两边垫起。在齿轮轴方头 I plant with a TT4242 boring car end face crankshaft thrust bearing surface. In the process of cutting found that there is a circle in the processing plane due to uneven knife and the resulting “bulging belly.” There are two reasons for the unevenness of the knife: one is that the axial clearance of the thrust bearing is not eliminated at the rotating joint of the rack shaft; and the other is the meshing gap between the gear and the rack. We use the following method to detect and eliminate the mesh gap, “belly” to eliminate, the processing surface finish up to 6. Now introduced below, for reference. Check the clearance between the slider rack and the gear. Cutter plate shown in Figure 1 placed on both sides of the cutter pad. In the gear shaft square head