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    • 2. 发明授权
    • Aligning average axis of hollow workpiece cavity with rotary machine axis
    • 中空工件腔平均轴与旋转机轴对齐
    • US5274566A
    • 1993-12-28
    • US985995
    • 1992-12-04
    • Robert W. ReedDouglas A. KartsenStevan W. Akerley
    • Robert W. ReedDouglas A. KartsenStevan W. Akerley
    • B23Q15/00B23Q15/22B23Q17/22G01B17/00G01M1/16G05B19/18G05B19/402G01M1/00B23B1/00G01M1/34
    • G05B19/402G01B17/00G01M1/16G05B2219/37197G05B2219/37269G05B2219/37398G05B2219/37492G05B2219/37525G05B2219/49113G05B2219/50055G05B2219/50152Y10S82/903Y10T82/10
    • A computer (21) processes the time between ultrasonic echoes received at a transducer (19) indicative of the outer radius and wall thickness of a workpiece (10) by subtracting (69) the weighted average (80-90) wall thickness from the weighted average outer radius to generate an internal radius for a large number of points around a spiral slice of the workpiece. The internal radii and angles are converted (69) to x and y coordinates. The centroid (X, Y) of each slice of data indicating workpiece cavity internal radii is determined (71) as twice the summation of the x coordinates and twice the summation of the y coordinates of all of the datum points of the slice. The least squares fit (73) of the X coordinates of the centroids of all of the slices and the least squares fit (74) of the Y coordinates of the centroids of all of the slices are then used to determine the average axis of the cavity of the workpiece. The X and Y coordinates of the end points of the average axis of the cavity are then converted (75) to polar coordinates to permit offsetting the end points of the workpiece commensurate amounts, whereby further machining will cause the internal cavity of the workpiece to end up more nearly centrally located, on average.
    • 计算机(21)通过从加权平均值(80-90)中减去(69)加权平均(80-90)壁厚来处理在换能器(19)处接收的指示工件(10)的外径和壁厚之间的超声波回波之间的时间 平均外半径以产生围绕工件的螺旋切片的大量点的内半径。 将内部半径和角度(69)转换为x和y坐标。 确定表示工件腔内半径的每个切片数据的重心(X,Y)(71)是x坐标的和的两倍,并且是切片的所有基准点的y坐标的和的两倍。 所有切片的质心的X坐标的最小二乘拟合(73)和所有切片的质心的Y坐标的最小二乘拟合(74)然后用于确定腔的平均轴 的工件。 然后将空腔平均轴端点的&upbar&X和&upbar&Y坐标转换(75)到极坐标,以允许偏移工件的端点相应的量,从而进一步加工将导致工件的内腔 平均来说,最终更多地位于中心位置。
    • 7. 发明申请
    • ALIGNING AVERAGE AXIS OF HOLLOW WORKPIECE CAVITY WITH ROTARY MACHINE AXIS
    • 用旋转机器轴对中空工作平面轴的平均轴
    • WO1994014108A1
    • 1994-06-23
    • PCT/US1993010871
    • 1993-11-10
    • UNITED TECHNOLOGIES CORPORATION
    • UNITED TECHNOLOGIES CORPORATIONREED, Robert, W.KARTSEN, Douglas, A.AKERLEY, Stevan, W.
    • G05B19/18
    • G05B19/402G01B17/00G01M1/16G05B2219/37197G05B2219/37269G05B2219/37398G05B2219/37492G05B2219/37525G05B2219/49113G05B2219/50055G05B2219/50152Y10S82/903Y10T82/10
    • A computer (21) processes the time between ultrasonic echoes received at a transducer (19) indicative of the outer radius and wall thickness of a workpiece (10) by subtracting (69) the weighted average (80-90) wall thickness from the weighted average outer radius to generate an internal radius for a large number of points around a spiral slice of the workpiece. The internal radii and angles are converted (69) to x and y coordinates. The centroid (X, Y) of each slice of data indicating workpiece cavity internal radii is determined (71) as twice the summation of the x coordinates and twice the summation of the y coordinates of all of the datum points of the slice. The least squares fit (73) of the X coordinates of the centroids of all of the slices and the least squares fit (74) of the Y coordinates of the centroids of all of the slices are then used to determine the average axis of the cavity of the workpiece. The X &cir& NOt and Y &cir& NOt coordinates of the end points of the average axis of the cavity are then converted (75) to polar coordinates to permit offsetting the end points of the workpiece commensurate amounts, whereby further machining will cause the internal cavity of the workpiece to end up more nearly centrally located, on average.
    • 计算机(21)通过从加权平均值(80-90)中减去(69)加权平均(80-90)壁厚来处理在换能器(19)处接收的指示工件(10)的外径和壁厚之间的超声波回波之间的时间 平均外半径以产生围绕工件的螺旋切片的大量点的内半径。 将内部半径和角度(69)转换为x和y坐标。 确定表示工件腔内半径的每个切片数据的重心(X,Y)(71)是x坐标的和的两倍,并且是切片的所有基准点的y坐标的和的两倍。 所有切片的质心的X坐标的最小二乘拟合(73)和所有切片的质心的Y坐标的最小二乘拟合(74)然后用于确定腔的平均轴 的工件。 然后将空腔平均轴的端点的X&cir&NOt和Y&cir&NOt坐标转换(75)到极坐标,以允许偏移工件的端点相应的量,从而进一步加工将导致内腔 平均来说,工件最终更靠近中心位置。