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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||72/460 ; 29/6 ; 72/76 ; 72/465|
|발명자 / 주소||
|인용정보||피인용 횟수 : 6 인용 특허 : 1|
The fatigue strength of high stress areas of components of diverse shapes is increased by cold forming by clamping the component resiliently between a base and a clamp member urged resiliently toward the base, and impacting the component area with a complementary shaped reciprocative snap die driven by a percussion piston. Two diverging dies may be driven by the same percussion piston to impact two spaced component areas such as opposed fillets of a crankshaft throw.
Apparatus for increasing the fatigue strength of components, comprising: (a) a base supporting a basic member, (b) a bearing surface on the basic member for supporting a component, (c) a clamp member mounted on and spaced from the basic member for interposing a component between them, (d) resilient connector means interconnecting the basic member and clamp member for urging the clamp member resiliently toward the basic member for clamping a component therebetween, (e) snap die means on the basic member movable toward and away from a clamped component for...