Straight bevel gears are manufactured by means of primary forming, forming, or cutting processes. Examples of primary forming are casting and sintering. Casting is used on a large scale to manufacture straight bevel gears from non-metallic and non-ferrous materials for gear systems which are undemanding in terms of accuracy and power density. Sintered bevel gears are used in relatively large quantities in hand-held power tools like, for example, angle grinders. In comparison to other processes, it is difficult to avoid inadequate homogeneity, due to uneven densification. Dies are also very expensive to produce, and gear modifications are costly if dies have to be modified (Ref. 1).
展开▼
