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公开(公告)号：US3615143A
公开(公告)日：1971-10-26
申请号：US3615143D
申请日：1969-04-04
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
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
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公开(公告)号：US3927253A
公开(公告)日：1975-12-16
申请号：US45400974
申请日：1974-03-22
CPC分类号： G02B27/46
摘要： A diffractometer of the type comprising a light source, an image transformation unit and an image reconstruction unit, in which the image transformation unit includes a condenser lens, is provided with an adjustable aperture stop in the focal plane of the condenser lens. A further adjustable aperture stop may be provided at the entrance pupil of a collimating lens of the image transformation unit. A television camera is positioned to receive light from the diffractometer and a further lens is used to adjust the focus to either the transform plane or the image plane of the instrument, adjustment of one or both of the stops adjusting the transform or the image quality.
摘要翻译： 包括光源，图像变换单元和图像重建单元的类型的衍射仪在其中包括聚光透镜的图像变换单元在聚光透镜的焦平面中设置有可调节的孔径光阑。 可以在图像变换单元的准直透镜的入射光瞳处设置另外可调节的孔径光阑。 电视摄像机被定位成接收来自衍射仪的光，并且使用另外的透镜来将焦点调节到乐器的变换平面或图像平面，调节调节变换或图像质量的一个或两个停止点。
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公开(公告)号：US3911257A
公开(公告)日：1975-10-07
申请号：US47272474
申请日：1974-05-23
摘要： A method of testing a curved surface of a body, which can be used on bodies having only partial arcs available for testing and apparatus for performing the method comprising drawing a sensor over the surface of the body between two end points at which the relative angular orientation of the sensor and the body are known, and calculating from the information signals from the sensor, and from signals representing the relative angular orientation of the body and the sensor during the traverse, the parameters of a best fit limacon from which data indicating the eccentricity between the centre of the partial arc on the body with respect to the centre of relative rotation can be obtained and also a signal can be generated representing a reference figure against which surface variations of the body over the partial arc can be compared.
摘要翻译： 一种测试身体的弯曲表面的方法，其可以用于仅具有用于测试的部分弧的主体和用于执行该方法的装置，该方法包括在两个端点之间在两个端点之间绘制传感器，所述两个端点之间相对角度取向 已知传感器和身体，并且根据来自传感器的信息信号和表示身体和传感器在横越过程中的相对角度取向的信号计算最佳拟合度数的参数，从该信号中指示偏心的数据 可以获得相对于相对旋转中心的身体部分弧的中心之间，并且还可以生成表示可以比较部分弧上的身体的表面变化的参考图形的信号。
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公开(公告)号：US3571579A
公开(公告)日：1971-03-23
申请号：US3571579D
申请日：1968-04-25
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
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.
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公开(公告)号：US3885318A
公开(公告)日：1975-05-27
申请号：US37866773
申请日：1973-07-12
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。
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