论文部分内容阅读
根据内燃机曲轴产品质量分等标准JB/NQ/62.1—87,要求各连杆轴颈对第一连杆轴颈中心线的角度偏差一等品为±20′,为使检测时较为直观,通常称拐颈180°对称度。我厂生产的492Q曲轴(见图1)。在加工过程中,为确保各拐对称度的设计要求,一般在精磨后,抽样检查,利用平板检验的方法,将1、5主轴颈轴线与Ⅰ拐轴线调平,用高度尺、百分表测Ⅱ、Ⅲ、Ⅳ拐的高点,然后将工件翻转180°再测,两
According to the product quality standard JB / NQ / 62.1-87 of crankshaft of internal combustion engine, it is required that the first-product of each connecting rod journal to the centerline of the first connecting rod journal center line is ± 20 ’, in order to make the inspection more intuitive, Shui neck 180 ° symmetry. I produced 492Q crankshaft plant (see Figure 1). In the process of processing, in order to ensure the symmetry of each turn of the design requirements, usually after grinding, sampling inspection, the use of flat-panel inspection methods, the primary axis of the neck and the Ⅰ 1 axis balance leveling, with the height scale, percentage Table measured Ⅱ, Ⅲ, Ⅳ Shui of the high point, and then the workpiece flip 180 ° retest, two