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本文介绍在光学分度头上测量斜齿轮齿向的方法,简便易行,对非成批生产齿轮的中小企业有实用价值,具体介绍如下。光学分度头按常规调整好后,将被测齿轮顶在分度头顶尖上。如图1所示,调整齿轮使其某一齿的分度圆上的点处于最高位置,设高度为L L=h+ρ式中,h为光学分度头顶尖中心高;p为当某齿廓分度圆上的点处于该齿面最高位置时,此点到齿轮轴线的垂直距离。式中,r_f为分度圆半径;m.为法向模数;α_f为分度圆压力角;Z为齿数;β_f为分度圆螺旋角。测量时将装夹在阿贝测头上的杠杆千分表用尺寸为L的量块对好零位,然后转动齿轮,
This article describes the method of measuring helical gear tooth indexing on the optical indexing head, which is simple and practical. It has practical value for small and medium-sized enterprises that do not produce gears in a batch. The details are as follows. Optical indexing head adjusted according to the routine, the gear to be measured at the top of the indexing tip. As shown in Fig. 1, adjust the gear so that the point on the pitch circle of one of the teeth is at the highest position, and set the height to LL = h + ρ where h is the center of the top of the optical indexing head; The point on the profiled circle is at the highest position of the tooth flank and the vertical distance from this point to the gear axis. Where r_f is the radius of the indexing circle; m is the normal modulus; α_f is the pressure angle of the indexing circle; Z is the number of teeth; and β_f is the pitch angle of the indexing circle. Measurement will be mounted on the Abbe probe lever dial gauge with the size of the L piece of the good zero, and then turn the gear,