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    • 27. 发明授权
    • Saber saw
    • 军刀看见
    • US3971132A
    • 1976-07-27
    • US512789
    • 1974-10-07
    • David R. GriffiesRussell O. RobisonRobert W. Taylor
    • David R. GriffiesRussell O. RobisonRobert W. Taylor
    • B23D49/16B23D51/16B27B19/09
    • B23D49/165B23D49/162B23D51/16
    • A portable, power-operated sabre saw having a power driven saw blade holder which is curved and which is mounted in the sabre saw housing for reciprocation along a curved path that is determined by its curvature to impart to a blade carried thereby a component of cutting stroke travel that is in the direction in which the blade is urged against a workpiece to cut the workpiece. Another feature disclosed herein is a counterweight which dynamically counterbalances the mass of the saw blade holder and the saw blade and which is recessed to receive a power driven gear that supplies the motion for reciprocating the holder and the counterweight. The counterweight is confined between and guided for reciprocating motion by opposed side wall regions of a longitudinally split housing, and a guide pin, which is trapped between the halves of the split housing, extends through a slot in one end of the counterweight to provide a further guide for the counterweight. Also disclosed herein is two-part bearing holder assembly in which a locating protuberance is formed on one part to transversely locate the second part, but which permits relative axial displacement of the second part to enable the second part to be axially positioned by engagement with a spherically contoured surface of a bearing that is clamped between the two bearing holder parts. The second part mounts a gear supporting idler shaft to ensure that the axis of the idler shaft is parallel with the axis of the bearing seat on the second part. Another feature disclosed herein is a sabre saw blade chuck assembly that so distributes operating forces developed during sawing as to reduce the likelihood of structure failure of the blade holder.
    • 一种便携式动力操作的刀剑锯,其具有动力驱动的锯片保持器,其具有弯曲的并且安装在刀锯壳体中以沿着弯曲路径往复运动,弯曲路径由其曲率确定以赋予由其承载的刀片,从而切割成分 行程行进,其沿刀片被推向工件以切割工件的方向。 本文公开的另一个特征是一种配重,其动态地平衡锯片保持器和锯片的质量,并且其被凹入以接收提供用于使保持器和配重往复运动的动力驱动齿轮。 配重被限制在纵向分离的壳体的相对侧壁区域之间并被引导以进行往复运动,并且引导销被夹在分离壳体的两半之间,延伸穿过配重的一端中的狭槽,以提供 配重的进一步指导。 本文还公开了两部分轴承保持器组件,其中定位突起形成在一个部分上以横向定位第二部分,但是允许第二部分的相对轴向位移,以使得第二部分能够通过与 夹紧在两个轴承座部件之间的轴承的球形轮廓表面。 第二部分安装齿轮支撑惰轮轴,以确保惰轮轴的轴线与第二部分上的轴承座的轴线平行。 本文公开的另一个特征是刀锯片卡盘组件,其分配在锯切过程中产生的操作力,以减少刀架的结构故障的可能性。