公开(公告)号：US5076740A

公开(公告)日：1991-12-31

申请号：US151391

申请日：1988-02-02

申请人： Laurence R. Petrie

发明人： Laurence R. Petrie

IPC分类号： B23B31/08

CPC分类号： B23B31/086 ,  Y10T279/17111 ,  Y10T408/455 ,  Y10T408/70 ,  Y10T408/73

摘要： A toolholder for holding a cutting tool such as a tap in the spindle of a machine tool includes a torque-limiting clutch to prevent excessive load being applied to the cutting tool. The clutch comprises at least one ball located in sockets in the driving and driven members but there is an arrangement, whereby at a predetermined critical torque, the ball moves axially out of engagement with one of the driving and driven members to disconnect the drive, and a deflecting device engages with the ball and moves it to a position where it does not encounter the socket from which it has been released or any similar sockets. This prevents wear on the clutch.The toolholder also comprises a conduit system for cutting fluid being fed into a bore in the cutting tool. The conduit extends through a telescopic part of the toolholder and includes a flexible part deviating from a straight linear form, so that it can extend by tending to straighten, in order to accommodate telescopic extension of the toolholder.

公开(公告)号：US5671910A

公开(公告)日：1997-09-30

申请号：US331636

申请日：1995-04-25

申请人： David Davies ,  Laurence R. Petrie

发明人： David Davies ,  Laurence R. Petrie

IPC分类号： B23Q3/08 ,  B25B11/00

CPC分类号： B25B11/005

摘要： A vacuum plate system comprises a support plate (310) formed of a plurality of support plate modules (320-380) that are supported on a base plate, and serve to transfer vacuum between vacuum apertures in the base plate and a workpiece held on the support plate (310). The support plate module (340) is formed with a plurality of circular lip seals (341) of larger size, and disposed therebetween, a plurality of lip seals (349) of smaller size. The area within each of the lip seals (341, 349) has a small hole extending through the respective support plate module, to transfer vacuum in a restricted manner. The remaining support plate modules are of a similar configuration, but with variations. In machining of a workpiece held on the support plate modules (320-280), the modules may be cut into, without risk of losing the vacuum overall holding effect on the workpiece. The specification discloses various other support plates.

摘要翻译： PCT No.PCT / GB93 / 00902 Sec。 371日期1995年04月25日 102（e）日期1995年4月25日PCT提交1993年4月29日PCT公布。 第WO93 / 22104号公报 日期1994年11月11日真空板系统包括由多个支撑板模块（320-380）形成的支撑板（310），支撑板模块（320-380）被支撑在基板上，并且用于在基板中的真空孔之间传递真空， 保持在支撑板（310）上的工件。 支撑板模块（340）形成有多个大尺寸的圆形唇形密封件（341），并且设置在其间，具有更小尺寸的多个唇形密封件（349）。 每个唇形密封件（341,349）内的区域具有延伸穿过相应的支撑板模块的小孔，以有限的方式传递真空。 剩余的支撑板模块具有相似的配置，但具有变化。 在加工保持在支撑板模块（320-280）上的工件时，模块可以被切割成，而不会失去对工件的真空整体保持作用的风险。 本说明书公开了各种其他支撑板。

公开(公告)号：US4812089A

公开(公告)日：1989-03-14

申请号：US777296

申请日：1985-09-18

申请人： Laurence R. Petrie

发明人： Laurence R. Petrie

IPC分类号： B23B31/08 ,  B23B31/02

CPC分类号： B23B31/086 ,  Y10T279/17111 ,  Y10T408/455 ,  Y10T408/70 ,  Y10T408/73

摘要： A toolholder for holding a cutting tool such as a tap in the spindle of a machine tool includes a torque-limiting clutch to prevent excessive load being applied to the cutting tool. The clutch comprises at least one ball located in sockets in the driving and driven members but there is an arrangement, whereby at a predetermined critical torque, the ball moves axially out of engagement with one of the driving and driven members to disconnect the drive, and a deflecting device engages with the ball and moves it to a position where it does not encounter the socket from which it has been released or any similiar sockets. This prevents wear on the clutch.The toolholder also comprises a conduit system for cutting fluid being fed into a bore in the cutting tool. The conduit extends through a telescopic part of the toolholder and includes a flexible part deviating from a straight linear form, so that it can extend by tending to straighten, in order to accommodate telescopic extension of the toolholder.

摘要翻译： 用于在机床的心轴中保持诸如水龙头的切割工具的刀架包括扭矩限制离合器，以防止施加到切割工具的过大的负载。 离合器包括位于驱动和被驱动构件中的插座中的至少一个球，但是存在一种布置，由此在预定的临界转矩下，球与驱动和被驱动构件中的一个轴向移动离开接合以断开驱动器，并且 偏转装置与球接合并将其移动到其不遇到其已被释放的插座的位置或任何类似的插座。 这样可以防止离合器上的磨损。 刀夹还包括用于切割被输送到切削工具中的孔中的流体的管道系统。 导管延伸穿过刀架的伸缩部分，并且包括偏离直线形状的柔性部件，使得其可以通过趋向于伸直而延伸，以便适应刀架的伸缩延伸。