[특허]Surface measurement instruments

Surface measurement instruments 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01B-007/28
출원번호	US-0616130 (1975-09-24)
우선권정보	UK-0041561 (1974-09-24)
발명자 / 주소	Siddall Graham John (Keyworth EN) Player Michael Antony (Aberdeen SC)
출원인 / 주소	The Rank Organisation Limited (London EN 03)
인용정보	피인용 횟수 : 43 인용 특허 : 0

초록 ▼

A method of determining the coordinates of the center of curvature of the curved surface of a workpiece on a surface measurement instrument of the type having a workpiece table rotatably mounted on a main spindle, and a sensor for contacting the surface of a workpiece mounted on the table. The method comprises the steps of traversing the sensor over the workpiece surface and deriving three signals representing the value of the radial distance from the spindle to the workpiece surface at three points spaced along the traverse. From these values, and a knowledge of the angular separation of the three points an approximation for the coordinates of the center of the curved surface of the workpiece with respect to the spindle can be derived using the algorithm [Figure] and [Figure] WHERE X AND Y RESPECTIVELY REPRESENT THE COORDINATES OF THE CENTER OF THE WORKPIECE, R1, R2, R3 REPRESENT THE RADIAL DISTANCE FROM THE SPINDLE AXIS TO THE WORKPIECE SURFACE AT THE THREE POINTS ALONG THE TRAVERSE, AND f

대표청구항 ▼

A method of determining the coordinates of the centre of curvature of the curved surface of a workpiece with respect to a predetermined frame of reference the origin of which coincides with the centre of relative rotation between the workpiece and a sensor of a surface measurement instrument of the type having a table on which a workpiece is mounted and a sensor which is drawn in contact with the surface of the workpiece to produce output signals representative of surface variations upon relative rotation of the sensor and the table on which the workpiece is mounted, comprising the steps of: traversing the sensor over the workpiece surface to provide an output signal representing said surface, electrically deriving from said sensor output signal three signals representing the value of the radial distance of said surface of said workpiece from said centre of relative rotation at three points along the traverse of said sensor, the middle point lying at the intersection of one of the axes of said predetermined frame of reference and the workpiece surface, and the other two points subtending at the centRe of relative rotation an angle f1, r2, r3 respectively represent the radial distance determined at said three points in order along said traverse. Apparatus for determining the coordinates of the centre of curvature of the curved surface of a workpiece with respect to a predetermined frame of reference the origin of which coincides with the centre of relative rotation between the workpiece and a sensor of a surface measurement instrument of the type having a table on which a workpiece is mounted and a sensor which is drawn in contact with the surface of the workpiece to produce output signals representative of surface variations upon relative rotation of the sensor and the table on which the workpiece is mounted, said apparatus comprising: means for traversing the sensor over the workpiece surface whereby to provide an output signal representing said surface, means for deriving from said sensor output signal three signals representing the value of the radial distance of said surface of said workpiece from said centre of relative rotation at three points along the traverse of said sensor, the middle point lying at the intersection of one of the axes of said predetermined frame of reference and the workpiece surface, and the other two points subtending at the centre of relative rotation an angle f1, r2, r3 respectively represent the radial distance determined at said three points in order along said traverse.

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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

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Surface measurement instruments 원문보기

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Surface measurement instruments 원문보기

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이 특허를 인용한 특허 (43)

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