根据测头误差产生的机理，通过对测头不同触发区间触发力的分析，得出不同触发区间预行程量的计算公式。
All kinds of error sources will effect the on-machine measure system precision were introduced in the forth part of the paper, especially the error from the trigger probe.
该系统采用新型触发式传感器 ，可使刀具刀尖自身作为测头测试工件加工尺寸。
The measurement technology is based on a novel fine touch sensor which enables the cutting tool tip itself to be used as the contact probe to implement workpiece inspection.
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