过去我们的导柱与模座固定部位是采用圆柱形压配合形式,但由于模座导柱孔的几何尺寸精度,光洁度及其与模座平面的垂直度,要求都比较高,而我们又没有专用镗床,故只能利用车床加工。不但加工工时长,而且质量比较难保证。往往由于精度达不到要求而增加装校导柱工时。有些甚至不得不返工把孔扩大,另配导柱。对大型模座的导柱孔,则更受着设 In the past our guide column and the mold base is a fixed part of the use of cylindrical pressure with the form, but because of mold base guide column hole geometry accuracy, finish and its verticality with the mold base plane requirements are relatively high, and we do not Special boring machine, it can only use lathe processing. Not only long working hours, and quality is more difficult to guarantee. Often due to the accuracy of less than the requirements and increase the school guide column hours. Some even had to rework the hole to expand, with guide post. For the large mold base guide post hole, it is more subject to set