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导柱衬套在冲模中的作用是保证上模对下模的良好导向,从而使凸模和凹模的刃口能均匀地吻合。如果导柱衬套本身的制造精度及其在底板上的安装准确度不高,工件的质量和模具的寿命就要受到严重的影响。所以,冲模底板上导柱衬套孔的精度都规定的很高。具体要求是:1)上底板上的衬套孔和下底极上的导柱孔必须同心,不同心度不得大于0.01公厘;2)在全长中心距上,孔距偏差不得大于O.02公厘;3)孔中心线对底板平面的不垂直度不得大于0.01
The function of the guide column bushing in the die is to ensure the good guidance of the upper die to the lower die so that the cutting edges of the punch and the die can be uniformly matched. If the guide bush itself, the manufacture of precision and its accuracy in the installation of the floor is not high, the quality of the workpiece and the life of the mold will be seriously affected. Therefore, the accuracy of the guide bush bushing hole on the die plate are regulated very high. The specific requirements are: 1) the bushing hole on the bottom plate and the guide post hole on the bottom pole must be concentric, the eccentricity of which shall not be more than 0.01 mm; 2) the deviation of the hole pitch shall not be greater than 0 at the full center distance. 02 mm; 3) the centerline of the hole on the plane of the plane shall not be greater than 0.01 non-perpendicularity