Casting structure design should accord with the requirement of machine equipment itself and machining technology requirements, should also meet the requirements of the casting process, casting structure design should pay attention to the following:A, to facilitate manufacturing model, core box and style:1,the appearance of the casting should strive to simple, in order to draw, should try to make the casting parting surface is flat, and the smallest number;2,to the inner cavity of the casting, casting no or little use core, when using core, should be the support, the fixed and exhaust sanding, should have enough technology hole when necessary;3,inner and outer side for casting and strengthening rib structure, should be in the draw direction has a certain slope structure;4,convex parts and casting on the casting body should not differ too much, had better take the same height, the same distance on the surface of the close several convex sets, best into convex part of the whole.Second, to