铝合金圆柱齿轮压铸模设计

Design of Die Casting Die for Aluminum Alloy Cylindrical Gear

圆柱齿轮压铸件脱模时所需脱模力大,然而齿轮顶出端环形面积较小。为了推出铸件时不产生变形,无顶出痕迹,设计了内外推管同时推件圆柱齿轮压铸模。论述了模具结构特点和工作原理。该模具爪形浇口浇注,设有内、外两个推管。铸件脱模时受力均匀,比压小,无推痕。

Ejection of cylindrical gear needs a larger ejecting force,but the area of ring end face for push is small,which results in the easy deformation during pulling castings.The die casting die for cylindrical gear with inside and outside two ejector sleeves for pushing out parts at one time is designed to ensure non-distortion and non-mark during pushing parts.Structure characteristics and operation principle of the die were described.Claw type gate and inside-outside two ejector sleeves were adopted in the die to realize uniform exerted force and low specific pressure during pushing castings.Finally,there is no mark on the cylindrical gear castings.