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PFSU-640渐开线检查仪是西德KLING-ELNBERG公司的万能型仪器。我们在使用过程中经过摸索,初步掌握了影响该仪器测量精度的几个主要因素,据此提出了使用注意事项和检定方法。本文对此作一介绍,供同行参考。一、影响仪器测量精度的主要因素 1.仪器的回转度盘回转度盘是仪器的关键件,它的最小分度值为1″,度盘刻线所组成的同心圆直径约280。测量渐开线时,仪器水平度盘回转角α、滚动圆盘直径D_O及基圆直径D_g满足下式: tgα_e=D_O/D_g (1)由此式可知,度盘调不准,将在仪器的基圆方
The PFSU-640 involute tester is a versatile instrument from KLING-ELNBERG, West Germany. After exploring the process of using, we initially mastered several main factors that affect the measurement accuracy of the instrument, and put forward the precautions and verification methods accordingly. This article to make an introduction for peer reference. First, the main factor affecting the accuracy of the instrument 1. Instrument Rotation Disc rotation dial is the key pieces of the instrument, which is the smallest sub-value of 1 ", the dial composed of concentric circle diameter of about 280. Gradual Open line, instrument horizontal dial rotation angle α, rolling disk diameter D_O and base diameter D_g satisfy the following formula: tgα_e = D_O / D_g (1) This formula shows that the dial is not allowed, will be based on the instrument Round square