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车削多头蜗杆或螺纹时,常用小拖板刻度分头,但影响分头精度。我们在原方法基础上改进如下:车削多头蜗杆时,如果用小拖板刻度分头方法,则小拖板刻度盘转动格数n=π·m_6/刻度盘每格移动量△s 但是m_6和π的乘积不是一个整数,这就给分头带来麻烦,即使用百分表来控制移动距离,也不够理想。例如:车床小拖板丝杠4毫米,刻度盘总格数为50格,车模数等于1毫米的3头蜗杆,求小拖板刻度移动格数。
Turning long worms or threads, the common small drag scale division, but the impact of sub-precision. We improved on the basis of the original method is as follows: turning long worm, if the small carriage scale division method, the small carriage dial rotation grid n = π · m_6 / dial movement per grid △ s but m_6 and π The product is not an integer, which gives trouble to split, that is, using a dial indicator to control the movement distance is not ideal. For example: lathe small carriage screw 4 mm, dial the total number of grid is 50 grid, the number of cars is equal to 1 mm 3 worm, and seek a small carriage scale grid.