公开(公告)号：US3615143A

公开(公告)日：1971-10-26

申请号：US3615143D

申请日：1969-04-04

申请人： RANK ORGANISATION LTD

发明人： BARR JOHN DENZIL ,  REASON RICHARD EDMUND ,  REEVE THOMAS CHARLES ,  SPRAGG ROBERT CLAUDE ,  STARR ARTHUR TISSO ,  STILLWELL PETER FREDERIC THOMA ,  WHITEHOUSE DAVID JOHN

IPC分类号： G01B7/28 ,  G01B21/20 ,  G01B21/30 ,  G01B7/34 ,  G01B19/26

CPC分类号： G01B7/282

摘要： IN TESTING THE CIRCUMFERENTIAL SURFACE OF AN OBJECT RELATIVE ROTATION IS EFFECTED AT AN ANGULAR VELOCITY BETWEEN THE OBJECT AND A DETECTOR DEVICE WHICH PROVIDES SIGNALS REPRESENTATIVE OF THE SURFACE CHARACTERISTICS OF THE OBJECT AROUND A CLOSED CIRCUMFERENTIAL PATH. THE SIGNALS ARE PASSED THROUGH A FILTER DEVICE WHICH PASSES THE CONSTANT COMPONENT AND ONE OR MORE SELECTED HARMONIC COMPONENTS OF THE SIGNALS IN ACCORDANCE WITH A REFERENCE SHAPE FOR THE OBJECT. THE FILTER DEVICE ACCORDING TO THE INVENTION HAS AN EFFECTIVE IMPULSE RESPONSE SUCH THAT THE SUM OF THE ORDINATES OF THIS IMPULSE RESPONSE AT TIMES (T+R$R/W), O 3. PREFERABLY THE IMPULSE RESPONSE HAS THE FORM (1+2 COS WT) FOR O

公开(公告)号：US3571579A

公开(公告)日：1971-03-23

申请号：US3571579D

申请日：1968-04-25

申请人： RANK ORGANISATION LTD

发明人： WHITEHOUSE DAVID JOHN ,  BARR JOHN DENZIL ,  REASON RICHARD EDMUND ,  REEVE THOMAS CHARLES ,  SPRAGG ROBERT CLAUDE ,  STARR ARTHUR TISSO ,  STILLWELL PETER FREDERIC THOMA

IPC分类号： G01B11/30 ,  G06E3/00 ,  G06G7/19 ,  G01B7/34

CPC分类号： G06E3/001 ,  G01B11/303 ,  G06G7/1914

摘要： This invention relates to an instrument for testing the surface profile of a workpiece for irregularities. A conventional stylus arrangement is used to derive signals representative of the irregularities of the workpiece profile relative to a convenient datum, and these signals are stored, for example on a film strip or a magnetic tape. Signals are then extracted from the store by operating on each successive value of the stored signal with a weighting function which is nominally symmetrical about an instantaneous midordinate. The resulting signal represents, for each successive part of the profile under test, the convolution of the respective part of the first signal with the said weighting function, and is arranged to represent a useful means line from which the surface irregularities indicated by the first signal may be assessed.

公开(公告)号：US3885318A

公开(公告)日：1975-05-27

申请号：US37866773

申请日：1973-07-12

申请人： RANK ORGANISATION LTD

发明人： WHITEHOUSE DAVID JOHN ,  MOWBRAY MELTON ,  SPRAGG ROBERT CLAUDE

IPC分类号： G01B5/20 ,  G01B21/20 ,  G01B7/28

CPC分类号： G01B5/20

摘要： An instrument for testing the profile of a surface of an object having a non-circular, e.g. trochoidal, nominal shape, in which relative rotation is effected betweeen the object under test and the transducer, this relative rotation being compounded of two independent simultaneous rotations about parallel spaced apart axes so arranged that the transducer feeler traces a path which conforms to the nominal shape so that the transducer detects departures from the nominal shape. Automatic correction may be made for changes in the angle of the transducer feeler relative to the surface as the surface is scanned by the feeler.

摘要翻译： 一种用于测试具有非圆形的物体的表面的轮廓的仪器。 摆锤式，标称形状，其中在被测试物体和换能器之间进行相对旋转，该相对旋转被复合为围绕平行的间隔开的轴线的两个独立的同时旋转，使得换能器探测器跟踪符合标称形状的路径 以便传感器检测到偏离标称形状。 当探测器扫描表面时，可以对换能器探测器相对于表面的角度进行自动校正。