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在设计压铸模时,若型芯与分型面倾斜成某一角度,一般采用斜销、斜滑块、手动、液压和齿轮抽芯机构等。齿轮抽芯机构比较复杂、精确度和制造成本又比较高,因此在其他抽芯机构难以满足时采用。 一、计算K值的必要性 我厂采用齿轮抽芯机构的压铸模比较多,计算抽芯行程时,一直采用如下公式: S=t(Z-1)+K…………(1) 式中:S—抽芯行程(已计入安全系 数), t—节距,
In the design of die-casting mold, if the core and the sub-surface tilt at an angle, the general use of oblique pins, slant slider, manual, hydraulic and gear core pulling mechanism. The gear core pulling mechanism is more complicated, the precision and the manufacturing cost are relatively high, so it is adopted when other core pulling mechanism is difficult to meet. First, the calculation of the necessity of K value I plant the use of gear core pulling mechanism die more, calculate the pumping stroke, has been using the following formula: S = t (Z-1) + K ............ (1) Medium: S-core pulling stroke (included in the safety factor), t-pitch,