螺栓保证载荷试验中顶针锥度对测量结果的影响

Effect of thimble taper on measurement result in bolt load ensuring test

螺栓保证载荷试验是判断螺栓等外螺纹紧固件产品质量的重要试验。在此试验中,螺栓长度测量装置顶针锥度大小影响着测量的结果。试验采用重复测量的方法,分别使用15°、35°、45°锥度的顶针测量相同的5件螺栓,每件样品测量5次,记录测量数据,并对数据进行归纳整理、制图分析,结果表明:35°锥度顶针的稳定性和重复性较好。建议在比较螺栓保证载荷结果时,所使用的测量装置应采用相同锥度的顶针,以减少测量偏差。

Bolt load ensuring test is an important test for judging the quality of external thread fasteners product. In this experiment,the bolt length measurement device thimble taper size affect the result of the measurement. Experiment adopted the method of repeated measurement,used 15°,35°,45° taper thimble to measure the same five bolt,each sample measured five times,recorded the resulting data,and analyzing,summarizing the data to sort and map. The results showed that35° taper thimble had good stability and repeatability. It is recommended as to compare the bolt ensuring test results,measuring devices should use same taper thimble,to reduce the measurement deviation.