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以前,由于圆锥滚子轴承外圈滚道公差较大,在轴承行业中,普遍采用定程磨削法,其公差在0.05mm以上。随着新国标对轴承外滚道的公差压缩40%以上,定程磨削已不能满足新国标要求,因此,必须采用比较先进的测量方式主动测量。 我厂用于套圈内径磨削的MZ2015磨床上装有这种主动测量仪,我们曾将该装置用于外滚道磨削作试验(见图1)。结果,尺寸精度虽基本上能满足新国标的要求,但存在下列问题:①仪表架因受砂轮修整器的影响,工件箱最大只能调到10°(设计30°),且仪表维修和调整不便。②安装测量装置
In the past, due to the larger tolerances of the raceway of the tapered roller bearing outer ring raceway, the bearing grinding process was widely used in the bearing industry with a tolerance of more than 0.05mm. With the new national standard bearing outer raceway tolerance compression more than 40%, the process of grinding can not meet the new national standard requirements, therefore, we must use more advanced measurement methods to take the initiative to measure. The MZ2015 grinder, which is used to grind the inner diameter of the ferrule, is equipped with this kind of active gauge, which we used for the outer raceway grinding test (see Figure 1). As a result, although the dimensional accuracy can basically meet the requirements of the new national standard, the following problems exist: (1) Due to the influence of the wheel dresser, the maximum height of the workpiece box can only be adjusted to 10 ° (30 ° design) and the instrument is repaired and adjusted inconvenient. ② installation of measuring device