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车工同志在配件工作中往往遇到下列情现:需要加工一内孔与某轴配合,并且要达到一定的配合要求,特别是这根轴不能拿来在加工过程中进行试配,这就增加了加工的困难。况且一般工厂缺乏内径分厘卡(特别是大直径的)。因此,需要用内卡与外径分厘卡(或外卡)交接,并用内卡的摆动来掌握内孔大小。但由于配合要求和直径大小不同,掌握摆动距的大小是很困难的,只有凭技术经验估计,以致加工后往往不能满足要求,但又不易返工而造成损失。笔者根据配合性质及间隙与摆动距关系,绘制一张诺模图(一种代替繁复计算用的图算法图表),可以很方便的解决这个问题。其用法举例说明如下:例如有一根轴,它的名义直径是40毫米,需要车
Comrade works in the parts workers often encounter the following situations: Need to process a hole with a shaft, and to meet certain requirements, especially the shaft can not be used in the processing of the trial, which increases The processing difficulties. Moreover, the general factory lack of inner diameter points PCT (especially the large diameter). Therefore, the need to use the card with the outer diameter points Humin (or wild card) transfer, and use the card swing to grasp the hole size. However, due to different requirements and diameters, it is very difficult to grasp the swing distance. Only by technical experience estimation, it is often unable to meet the requirements after processing, but it is not easy to rework and cause losses. According to the nature of the cooperation and the relationship between the gap and the swing distance, the drawing of a Nomad diagram (a complicated calculation used to calculate the chart algorithm), you can easily solve this problem. An example of its use is as follows: For example, a shaft, its nominal diameter is 40 mm, the need for vehicles