公开(公告)号：US10589392B2

公开(公告)日：2020-03-17

申请号：US15589179

申请日：2017-05-08

Applicant: ROLLS-ROYCE plc

Inventor： George Durrant ,  Alistair Buchanan ,  Christopher P. Gibson

IPC: B23Q3/06 ,  B23Q3/00 ,  F01D5/12

Abstract: A fixture for locating a straight edge of a curved surface of a part and holding the part in a fixed position during performance of a machining operation on the straight edge is described. The fixture includes: one or more supports for seating a convex curved surface of the part, one or more detachable end stops arranged to extend in a plane orthogonal to that in which the supports sit and against which, in use, the straight edge can be aligned, and a clamp arranged, in use, to push the convex curved surface against the supports such that the straight edge contacts the supports without obstruction of the straight edge.

公开(公告)号：US20200324346A1

公开(公告)日：2020-10-15

申请号：US16382942

申请日：2019-04-12

Applicant: Rolls-Royce plc

Inventor： Michael J. Whittle ,  Alistair Buchanan ,  Craig A. Johnson

IPC: B23B37/00

Abstract: According to an aspect of this disclosure, an ultrasonic machining apparatus may include a machining head disposed at an angle, a machining platform for mounting a component, and one or more actuators for imparting ultrasonic vibration on the component wherein the angled machining head operates on the component according to the angle of the machining head, a position of the component, and the ultrasonic vibration.

公开(公告)号：US09498847B2

公开(公告)日：2016-11-22

申请号：US14208996

申请日：2014-03-13

Applicant: ROLLS-ROYCE PLC

Inventor： Alistair Buchanan ,  Christopher Paul Heason

IPC: B23K26/02 ,  G05B19/4093 ,  B23K26/34 ,  G05B19/41

CPC classification number: B23K26/34 ,  B23K26/035 ,  G05B19/41 ,  G05B2219/32228 ,  G05B2219/33031 ,  G05B2219/34083 ,  G05B2219/34135

Abstract: Method for determining an adaptive tool path: provides an aerofoil with deposition plane; determines deposition plane points corresponding to leading and trailing edges and circle center constrained by suction and pressure surfaces at their greatest distance apart; determines circle center point edge position passing through deposition plane points; determines trailing and leading edge reference lines extending from the circle center point through trailing and leading edge points, respectively and mid-reference line(s) extending from the circle center point through mid-reference point(s) between leading and trailing edge points; trims and determines each mid reference line to the bounds of the suction and pressure surfaces; applies an adaptive factor to each mid reference line providing an adaptive point for each mid-reference line; determines an spline extending through the leading and trailing edge points and each adaptive point; and traverses a tool along the spline or offset path from the spline by a factor.

Abstract translation: 用于确定自适应刀具路径的方法：为机翼提供沉积平面; 确定对应于前缘和后缘的沉积平面点和由吸力和压力表面在其最远距离处约束的圆心; 确定通过沉积平面点的圆心点边缘位置; 确定从圆心点延伸到后缘和前缘点的后缘和前沿参考线，以及从圆心点延伸到前缘和后缘点之间的中间参考点的中间参考线; 修剪并确定每个中间参考线到吸力和压力表面的界限; 对每个中间参考线应用自适应因子，为每个中间参考线提供自适应点; 确定延伸穿过前缘和后缘点和每个自适应点的样条线; 并沿着样条线或偏移路径从样条线移动一个因子。