清理铸件上的异形、超长形、之字形等型芯孔内芯砂,是一件比较麻烦的事。若采用一个手提风钻,在其夹头内装上一如图所示的简易工具,便可解决这类芯砂的清理问题。这种简易的清砂工具是由一段φ3mm的弹簧钢丝制成。制作时,将弹簧钢丝的一端绕成螺旋状,而另一端则套在一段内径大于弹簧钢丝直径的柔性护套内,然后卡在手提风钻夹头内。清理芯砂时,将该工具伸入铸件内腔(或各种孔内), It is a troublesome task to clean up the irregularities on the castings, overlong shape, core sand inside the zigzag core. If a portable pneumatic drill is used, a simple tool like the one shown in the chuck can solve the problem of cleaning such core sand. This simple sand cleaning tool is made of a piece of φ3mm spring steel wire. During manufacture, one end of the spring steel wire is spirally wound, while the other end is sleeved in a flexible sheath with an inner diameter greater than that of the spring steel wire, and then stuck in the hand-held pneumatic drill chuck. When cleaning the core sand, the tool into the casting cavity (or a variety of holes),