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外径千分尺是机械加工中使用最广泛的精密量具之一,一般用来测量工件的外径。要测量内径,根据要求不同常用以下几种量具:内卡钳、游标卡尺、内径千分尺、内径量表等。 我厂在加工如图1所示的零件时,由于采用了夹具,而夹具中有一心轴较长,轴径在φ80～φ100mm之间,将工件在一次装夹中加工完毕,内径D的精度为IT7,偏差H7,D在φ370～φ450mm之间几种
Outer diameter micrometer is one of the most widely used precision measuring tools in machining, generally used to measure the outer diameter of the workpiece. To measure the diameter, according to different requirements of the following types of gauges commonly used: calipers, vernier calipers, micrometer diameter, diameter gauge and so on. I plant processing parts shown in Figure 1, due to the use of the fixture, and the fixture has a longer mandrel, shaft diameter φ80 ~ φ100mm between the workpiece in a fixture in the processing, the accuracy of diameter D For IT7, deviation H7, D between φ370 ~ φ450mm several