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我厂加工的一种ＨＦＣ６７００系列轻型客车前轴（如图１所示），图样要求前轴的两端Ｘ点到左、右弹簧座平面距离为８３±０．５ｍｍ，同时主销孔端面相对弹簧座平面还有７”±１５’和２±１０’的倾斜角，两主销孔Ｘ点的距离为１４９０±３ｍｍ。这些尺寸用常规方法检测，难
I plant processing a HFC6700 series light bus front axle (shown in Figure 1), the pattern requires that the two ends of the front axle X point to the left and right spring seat plane distance of 83 ± 0.5mm, while the king pin hole end face relative The spring seat plane also has a tilt angle of 7 "± 15 ’and 2 ± 10’, the distance between the two kingpin holes X point is 1490 ± 3mm. These sizes are detected by conventional methods, difficult