[특허]Method of peening and portable peening gun

Method of peening and portable peening gun 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B21D-041/00 B21J-007/16
출원번호	US-0521602 (1974-11-06)
발명자 / 주소	Caruso Vincent P. (Huntsville AL) Minter Elbert J. (Decatur AL)
출원인 / 주소	The United States of America as represented by the United States National Aeronautics and Space Administration (Washington DC 06)
인용정보	피인용 횟수 : 20 인용 특허 : 0

초록 ▼

An improved portable peening gun characterized by a pneumatic motor, an axially reciprocable hammer supported to be driven by the motor from an initial position along a linear path, and an improved peening head including an axially reciprocable rod bundle coaxially aligned with the hammer and disposed within the path thereof. The improved head includes a plurality of peening rods, each being characterized by an anvil defined at one end thereof for receiving the hammer in impacting engagement, and a peening surface defined at the other end of a configuration substantially conforming to a segment of a sphere having a radius substantially equal to one-half the thickness of the rod, a barrel for supporting the rod bundle for axial reciprocation, and a helical spring disposed within the barrel for urging the bundle in displacement toward its initial position.

대표청구항 ▼

In a portable peening gun of the type having a hammer supported for axial reciprocation along a rectilinear path and a pneumatic motor for driving the hammer in a first direction along the rectilinear path, the improvement comprising: A. an axially reciprocable rod bundle including a plurality of peening rods, each being characterized by an anvil defined at one end thereof for receiving The hammer in impacting engagement as the hammer is driven in said first direction; B. means supporting said rod bundle within the path of said hammer including a barrel of a substantially tubular configuration supported in coaxial alignment with the hammer and concentrically related to the rod bundle; C. a retainer for confining the plurality of peening rods in closely spaced relation within the bundle, including a retainer of a disk-shaped configuration and characterized by a plurality of uniformly spaced bores extended therethrough for receiving the peening rods; D. means for driving said hammer in a second direction, opposite to said first direction, including a helical spring disposed within the barrel in concentric relation with the rod bundle seated against the retainer for continuously urging said bundle in displacement toward said hammer; and E. means defining a peening surface of a substantially hemispheric configuration at the end of each of said peening rods, opposite said one end, characterized by a radius substantially equal to one-half the thickness of the rod at the end of which the surface is defined. In a method of peening the surface of a metallic body for inducing therein residual compressive stresses, the step of: simultaneously impacting against a selected surface of a metallic body to be peened, a closely spaced plurality of peening surfaces of hemispheric configurations defined at the ends of a plurality of axially reciprocating, closely spaced peening rods for thus forming in said selected surface a plurality of closely spaced indentations of substantially hemispheric configurations, whereby residual compressive stresses are imparted to the surface of said body.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Method of peening and portable peening gun 원문보기

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Method of peening and portable peening gun 원문보기

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이 특허를 인용한 특허 (20)

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