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在仪表和相机制造中,经常会遇到如图中所示的薄片齿轮3和齿轮轴2之间过盈压配合装配。由于零件小(压配合孔径为1.4毫米),在切削加工、热处理以及装配过程中均易产生变形。使零件的尺寸公差和形位公差不易保证。因而常常产生装配不牢、垂直度超差等质量问题。为此可采用图示的铆合装配方法。压铆头1的底端面上有四个对称分布的凸台,凸台的凸起高度应根据薄片齿轮的厚度选择,一般为0.10～0.15毫米。凸台圆环边的宽度一般为0.3～0.6毫米。铆合装配时,用手不时旋转工件夹套4,多次重复使压铆头1
In instrument and camera manufacture, it is common to encounter an interference fit fit between the foil gear 3 and the gear shaft 2 as shown. Due to the small parts (press fit aperture of 1.4 mm), deformation during cutting, heat treatment and assembly is easily generated. So that parts of the size tolerance and shape tolerance is not easy to guarantee. Which often results in poor assembly and poor quality such as verticality. For this purpose, the riveted assembly method shown can be used. There are four symmetrically distributed bosses on the bottom end of the pressure rivet head 1. The height of the lugs of the bosses should be selected according to the thickness of the lamellar gears, generally 0.10-0.15 mm. Boss ring edge width is generally 0.3 to 0.6 mm. Riveting assembly, hand rotating the workpiece from time to time jacket 4, repeatedly press the rivet head 1