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众所周知,滚子带凸度后能显著地提高轴承的使用寿命,因此,从滚子的设计到磨削过程中,都会常常出现“凸度”问题。但是,凸度本身的概念及其理论分析与计算目前还缺乏准确的解释,而在生产过程中,由于“凸度”和“角度差”又往往同时出现,并用同一台仪器进行检测,这样就常常导致得到错误的结果。 例如,有一长度为20毫米的圆锥滚子,用比较法测得大头直径偏差为-1微米,小头为+2微米,中部为+3微米,这个滚子的角度差和凸度是多少? 根据角度差的概念,不难计算,其值为-1-2=-3微米;而凸度值是多少呢?有
As we all know, roller crown can significantly improve the bearing life, therefore, from roller design to the grinding process, there will often be “convexity” problem. However, the concept of crown itself and its theoretical analysis and calculation is still lack of accurate explanation, and in the production process, due to “convexity” and “angle difference” often appear at the same time, and with the same instrument for testing, so that Often leads to the wrong result. For example, there is a length of 20 mm tapered roller, compared with the big head diameter deviation of -1 micron, small head +2 micron, the central +3 micron, the roller angle difference and convexity what? According to the concept of angular difference, it is not difficult to calculate the value of -1-2 = -3 microns; and what is the convexity value?