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1. 发明授权

US4657454A Chuck for holding rotary cutting tool 失效
标题翻译：夹头旋转切割工具
公开(公告)号：US4657454A
公开(公告)日：1987-04-14
申请号：US810164
申请日：1985-12-18
申请人： Shuiti Migita , Hajime Ito
发明人： Shuiti Migita , Hajime Ito
IPC分类号： B23B31/117 , B23C1/00 , B23B31/04
CPC分类号： B23B31/1175 , B23B31/117 , Y10S279/903 , Y10T279/17316 , Y10T279/17384 , Y10T408/957 , Y10T409/30952
摘要： In a chuck comprising a holding cylinder having a tapered outer circumferential surface and an objective tool or an adapter for holding such a tool inserted therein, and a clamping cylinder rotatably mounted at a predetermined distance from the outer circumferential surface of the holding cylinder, a number of needle rollers being arranged in a plurality of stages along the entire circumference of a gap between the two cylinders to extend along a direction at a predetermined inclined angle .alpha. with respect to the common axis of the cylinders, and the needle rollers rotating and revolving upon rotation of the clamping cylinder, thereby contracting and recoverying the holding cylinder, slits are formed in the holding cylinder to allow elasticity of the holding cylinder and to improve oil throwing performance and clamping force of the holding cylinder. The slits will not interfere with smooth rotation of the needle rollers.In another invention, communication between the inner and outer circumferential surfaces of the holding cylinder through the slits is blocked by seal members so as to prevent egress of dust or cutting chips onto the outer circumferential surface of the holding cylinder through the slits, and to allow smooth rotation of the needle rollers.
摘要翻译：在包括具有锥形外圆周表面的保持筒和用于保持插入其中的这种工具的适配器的卡盘中，以及可旋转地安装在距保持筒的外周表面预定距离的夹紧圆筒，滚针沿着两个气缸之间的间隙的整个圆周排列成多个阶段，以相对于气缸的公共轴线以预定的倾斜角α的方向延伸，并且滚针旋转和旋转夹持筒的旋转，从而使保持筒收缩，形成在保持筒内的狭缝，以保持保持筒的弹性，提高保持筒的喷油性能和夹持力。狭缝不会干扰滚针的平滑旋转。在另一个发明中，通过狭缝将保持筒的内周面与外周面之间的连通由密封构件阻挡，以防止灰尘的流出或通过狭缝将碎屑排出到保持筒的外周表面上，并允许滚针平稳旋转。

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