公开(公告)号：US09744628B1

公开(公告)日：2017-08-29

申请号：US15374408

申请日：2016-12-09

申请人： Albert S. Kuo

发明人： Albert S. Kuo

IPC分类号： B23P9/02 ,  B23P11/02 ,  B21D31/00 ,  B21D39/20 ,  B21D41/02

CPC分类号： B23P9/025 ,  B21D31/00 ,  B21D39/20 ,  B21D41/026 ,  B23P11/02 ,  C21D7/00 ,  C21D7/02

摘要： Systems and methods for coldworking metal are described that reduce the axial flow of metal and increase the radial/tangential flow, thereby improving the fatigue life at an aperture. A tool is inserted through an aperture and its travel speed is reduced when in contact with the metal to reduce axial plastic flow. A sensor as part of the motive system moving the mandrel can sense when the tool contacts the metal and reduces the speed of the tool. The tool may move more quickly when not in contact with the metal to reduce working time than when the mandrel is working the metal. The coldworking tool engages the metal at the aperture at a speed of less than the speed which results in the time duration for the mandrel engaging the metal at the aperture for 35 second per inch of metal thickness at the aperture.

公开(公告)号：US06266991B1

公开(公告)日：2001-07-31

申请号：US09541806

申请日：2000-04-03

申请人： Albert S. Kuo

发明人： Albert S. Kuo

IPC分类号： B21D3100

CPC分类号： B23P9/025

摘要： A method and apparatus for coldworking holes using a reusable tubular seamless sleeve made of shape memory alloys. The apparatus uses a pre-lubricated tubular seamless sleeve made of shape memory alloys having a superelasticity property, a mandrel having a major diameter portion, an end-cap with a rough surface, and an adapting-spacer having a rough complementary surface. The preferred coldworking operation includes the steps of placing the sleeve firmly between the rough surfaces of the end-cap and the adapting-spacer which are carried on a mandrel pulling means, passing forward the major diameter portion of the mandrel through the sleeve whose diameter is therefore elastically expanded and thereafter shrinks to a size sufficiently smaller than the diameter of a hole in a workpiece, inserting the sleeve together with the mandrel into said hole, placing the end-cap against the workpiece, retracting the mandrel backward through and out of the sleeve; thereby elastically expanding the sleeve wall against the hole bore and exerting radial outward forces on the sleeve which in turn transmitting the coldworking force to the hole bore; thereafter the sleeve diameter shrinking to a size sufficiently smaller than the diameter of the coldworked hole to ease the removal the sleeve out of the hole. The sleeve is reusable due to the repeatability of the superelasticity property of shape memory alloys.

摘要翻译： 一种使用由形状记忆合金制成的可重复使用的管状无缝套管来冷加工孔的方法和装置。 该装置使用由具有超弹性特性的形状记忆合金制成的预润滑管状无缝套管，具有大直径部分的心轴，具有粗糙表面的端盖和具有粗糙互补表面的适配间隔件。 优选的冷加工操作包括将套筒牢固地放置在端盖的粗糙表面和适配间隔件之间的步骤，承载在心轴牵引装置上，使心轴的大直径部分穿过其直径为 因此弹性膨胀，然后收缩到足够小于工件中的孔的直径的尺寸，将套筒与心轴一起插入所述孔中，将端盖放置在工件上，将心轴向后退回到 袖; 从而将套筒壁弹性地膨胀抵靠孔孔并且在套筒上施加径向向外的力，其又将冷加工力传递到孔孔; 此后套筒直径缩小到比冷加工孔的直径足够小的尺寸，以便于将套筒从孔中取出。 由于形状记忆合金的超弹性性质的重复性，套筒是可重复使用的。

公开(公告)号：US5943898A

公开(公告)日：1999-08-31

申请号：US24670

申请日：1998-02-17

申请人： Albert S. Kuo

发明人： Albert S. Kuo

IPC分类号： B23P9/02 ,  B21D31/00

CPC分类号： B23P9/025

摘要： A method and apparatus for coldworking holes using a pre-lubricated tubular seamless sleeve made of shape memory alloys. The apparatus uses a pre-lubricated tubular seamless sleeve made of shape memory alloys, a mandrel having a larger diameter end, a nose cap with rough conical surface, and a spacer with rough complementary conical surface. The sleeve is placed and sufficiently firmly held between the conical surfaces of the nose cap and spacer which are carried in a mandrel pulling means. The larger diameter end of the mandrel passes forwardly through and out of the sleeve whose diameter is therefore elastically expanded by the passing mandrel and thereafter restores to its original diameter because of the superelastic property of the shape memory alloys. The smaller diameter portion of the mandrel is surrounded and within the sleeve. The sleeve together with the mandrel are then inserted into a hole in an associated workpiece. The nose cap being carried on the mandrel pulling means is placed against the workpiece. The mandrel retracts backwardly through and out of the sleeve; thereby expands the sleeve wall against the hole wall and exerts radially outward forces on the sleeve, which in turn transmits the coldworking forces to the hole wall. After the mandrel is pulled out of the hole, the sleeve diameter restores to its original diameter because of the superelastic property of shape memory alloys, and therefore it can be easily removed out of the hole.

摘要翻译： 一种使用由形状记忆合金制成的预润滑管状无缝套管来冷加工孔的方法和装置。 该装置使用由形状记忆合金制成的预润滑管状无缝套筒，具有较大直径端部的心轴，具有粗糙锥形表面的鼻盖和具有粗糙互补锥形表面的间隔件。 套筒被放置并充分地牢固地保持在头盖和间隔件的圆锥形表面之间，所述锥形表面被承载在心轴拉动装置中。 心轴的较大直径端向前穿过和穿出套筒，其直径因此通过心轴弹性膨胀，然后由于形状记忆合金的超弹性而恢复到其原始直径。 心轴的较小直径部分被包围并在套筒内。 然后将套筒与心轴一起插入相关联的工件中的孔中。 承载在心轴牵引装置上的鼻帽被放置在工件上。 心轴向后退缩穿过套筒; 从而将套筒壁相对于孔壁膨胀并且在套筒上施加径向向外的力，该力又将冷加工力传递到孔壁。 在心轴从孔中拉出之后，由于形状记忆合金的超弹性，套筒直径恢复到其原始直径，因此可以容易地从孔中移出。

公开(公告)号：US07302746B2

公开(公告)日：2007-12-04

申请号：US11000284

申请日：2004-11-30

申请人： Albert S. Kuo

发明人： Albert S. Kuo

IPC分类号： B23P11/02 ,  B23P11/00 ,  B21D39/08

CPC分类号： B23P9/025 ,  C21D7/12 ,  Y10T29/49863 ,  Y10T29/49915 ,  Y10T29/53717

摘要： A method and apparatus for coldworking holes using rotational mandrel. The apparatus uses a tubular seamless sleeve made of shape memory alloys having a superelasticity property, a mandrel having major and minor diameter portions, an end-cap to seat and restrain axial and rotational motion of said sleeve. The preferred coldworking operation includes the steps of placing the sleeve firmly between the end-cap and the adapting-spacer which are carried on a mandrel pulling means, passing forward the major diameter portion of the mandrel through the sleeve whose diameter is therefore elastically expanded and thereafter shrinks, inserting the sleeve together with the mandrel into said hole, placing the end-cap against the workpiece, retracting while rotating the mandrel backward through and out of the sleeve; thereby expanding the sleeve wall against the hole bore and exerting radial outward force on the sleeve which in turn transmits the coldworking force to the hole bore and plastically expand said hole; thereafter the sleeve diameter shrinking to a smaller size to ease the removal of the sleeve out of the hole. The sleeve is reusable due to the superelasticity property of shape memory alloys.

摘要翻译： 用于使用旋转心轴对钻孔进行冷加工的方法和装置。 该装置使用由具有超弹性的形状记忆合金制成的管状无缝套管，具有主要和小直径部分的心轴，用于支撑和限制所述套筒的轴向和旋转运动的端盖。 优选的冷加工操作包括将套筒牢固地放置在末端盖和适配间隔件之间的步骤，承载在心轴拉动装置上，将心轴的大直径部分穿过其直径弹性膨胀的套筒， 然后收缩，将套筒与心轴一起插入到所述孔中，将端盖放置在工件上，在将心轴向后通过和离开套筒的同时回缩; 从而使套筒壁相对于孔孔膨胀并且在套筒上施加径向向外的力，其又将冷加工力传递到孔孔并塑性地膨胀所述孔; 此后套筒直径缩小到更小的尺寸以便于将套筒从孔中移出。 由于形状记忆合金的超弹性，套筒可重复使用。