In the manufacture of machine tools, the bevel gear transmission is often encountered. The two axes are often neither intersected nor paralleled. The measurement of the center distance of the two shafts is quite difficult. Although it can be guaranteed by tooling, it is generally desirable to know the center distance after processing. Qualified to avoid affecting gear assembly. Two simple and convenient measurement methods are described below. The first method is shown in Figure 1. In order to measure the center-to-center distance L of the two axes after machining, two cylindrical stepped shafts 1 and 2 are used. The shaft diameters of the front and rear ends of the two shafts are determined according to the size of the shaft hole to be measured. Segment diameter can be
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