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Chair support ramming craft analysis and its mold design Student name:xiong zhi yuan class:0781053 Supervisor:luohaiquan Abstract: This design topic assigns is some motorcycle chair support, the shapeis simple, Simultaneously includes falls the material and the curving two workingprocedures, curving relative quite is simple. In this design the essential place is the reasonable choice mold gap,the gap directly affects in the mold design is falling the materialquality, therefore the appropriate gap choice should take the workpiece cross section quality, fall the material precision, the moldlife and the processing quality four items as the basis, and carrieson the suitable classification. Partial key raised lies in, theconcave mold design in the mold design, they all will want theadvanced line of examination mold qualified later in the heattreatment, because it will affect is falling the material will bewhether qualified. Because this components belong to the mass production, moreover themanufacture precision request is not high, needs the small componentswhich the multi- working procedures flushes. Therefore the cut die hadme to choose the level to enter the mold, in order to could satisfythe manufacture request at the same time also to increase theoperation security and the reduced mold and the equipment quantity,thus reduced the workshop the area. Because myself level is limited, in the present paper inevitably hasmany careless mistakes and the mistake place, asks respectfully tocomment reads teacher to criticize points out mistakes. Keyword:chongcai gap The level enters the mold Section surface quality Mold life Signature of supervisor: