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量块的尺寸越大,受温度的影响也越大,其次是量块的尺寸越大,其侧面的平面度及平行度误差就越大,所以在检定时要考虑这些因素。一、量块检定测量方法:依据JJG146-2011《量块检定规程》进行测量。测量环境:温度为(20±0.3)℃;相对湿度为≤60%。假定被测对象是4等1000mm量块,那么标准量块就应该选3等1000mm量块。1.中心长度的检定测量过程4等量块的中心长度是以相同标称尺寸的3等量块作为标准,在测长机上采用直接比较法测
The larger the size of the block, the greater the impact of temperature, followed by the larger size of the block, the flatness and parallelism of the side of the greater the error, so when testing to consider these factors. First, the amount of block test measurement methods: According to JJG146-2011 “block test procedures” for measurement. Measurement environment: temperature (20 ± 0.3) ℃; relative humidity ≤ 60%. Assuming the test object is 4 and other 1000mm block, then the standard block should be selected 3 and other 1000mm block. 1. Central length of the verification measurement process 4 isometric block center length is based on the same nominal size of the 3 equal block as the standard in the measuring machine using direct comparison method