我们在进行镗缸的实践教学中，经常需要把超过最大修理尺寸的缸套取出来，然后再镶一个新缸套。通常取出缸套是采用铜棒加力敲打缸套底部的方法。由于缸套与缸体是过盈配合，用手工敲击方法速度很慢而且费劲，稍有不慎会损伤缸套和缸体下部的定位台肩，为此，我们设计了一种拆 We practice boring cylinder practice, we often need to take over the maximum size of the cylinder liner repair, and then insert a new liner. Usually take out the cylinder liner is the use of copper rod plus force on the bottom of the cylinder method. Due to the cylinder liner and the cylinder is interference fit, the method of manual percussion slow and strenuous, slightly inadvertently will damage the cylinder liner and the lower part of the cylinder positioning shoulder, for which we designed a demolition