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1. 发明授权

US4936718A Rotary cutter and associated method 失效
标题翻译：旋转刀具及相关方法
公开(公告)号：US4936718A
公开(公告)日：1990-06-26
申请号：US221931
申请日：1988-07-20
申请人： Jimmie L. Proffitt
发明人： Jimmie L. Proffitt
IPC分类号： B23C5/22
CPC分类号： B23C5/22 , Y10T407/1912 , Y10T407/192 , Y10T407/1956 , Y10T407/1962
摘要： A face milling cutter for holding a plurality of cemented tool bits for rotation about an axis and an associated method utilize a body of material defining a shank portion securable within a rotatable spindle of a machine tool for rotation about an axis and an insert-accepting body portion within which the tool bits are supported. The insert-accepting body portion is generally cylindrically in shape and joined to the shank portion so that the longitudinal axis of the body portion coincides with the axis of rotation of the cutter. Furthermore, the body portion defines a plurality of radially outwardly-opening recesses extending along the length of the cylindrical periphery of the body portion. Each recess is adapted to accept the shank of a tool bit so that when operatively positioned therein, the tool bit shank extends generally longitudinally of the cutter body portion. Moreover, the recesses are positioned in such a relationship to the rotational axis of the cutter so that the cutting tips of bits operatively positioned within the recesses are positioned at staggered, or alternative, distances from the rotational axis of the cutter. The method of the invention includes the steps involved in setting and staggering the cutting depths of the cutting bits in the cutter.
摘要翻译：一种用于保持围绕轴线旋转的多个胶合工具钻头的面铣刀，并且相关联的方法利用限定在机床的可旋转主轴内固定的柄部的材料体，用于围绕轴线旋转和插入物接收体支撑工具位的部分。插入物接受体部分大致呈圆柱形，并且与柄部接合，使得主体部分的纵向轴线与切割器的旋转轴线重合。此外，主体部分限定沿着主体部分的圆柱形周边的长度延伸的多个径向向外开口的凹部。每个凹部适于接纳工具头的柄，使得当其可操作地定位在其中时，工具钻头柄大致沿着切割器主体部分的纵向延伸。此外，凹槽被定位成与切割器的旋转轴线成这样的关系，使得可操作地定位在凹槽内的钻头的切割尖端定位成与切割器的旋转轴线交错或替代的距离。本发明的方法包括在切割器中设置和交错切割钻头的切割深度的步骤。

2. 发明授权

US4988243A Spring-loaded center 失效
标题翻译：弹簧中心
公开(公告)号：US4988243A
公开(公告)日：1991-01-29
申请号：US313584
申请日：1989-02-21
申请人： Jimmie L. Proffitt
发明人： Jimmie L. Proffitt
IPC分类号： B23G1/48
CPC分类号： B23G1/48 , B23G2210/04 , Y10S470/90 , Y10T408/96 , Y10T82/2568
摘要： A center for maintaining a cutting tool, such as a tapping tool or reamer, in axial alignment with a hole to be worked upon includes an elongated body and a centering pin received by a cavity defined in the body for movement between retracted and extended positions. A spring is interposed between the body and the centering pin for biasing the pin from the retracted position to the extended position, and the pin includes an accessible handle which projects through a slot provided in the body. The handle can be manipulated into a position within the slot for releasably locking the centering pin in a retracted position. For mounting the center within a machine tool, the body includes an end portion including a plurality of alternatively-sized cylindrical sections arranged axially along the body so that the body can be mounted within collets of alternative sizes. Moreover, the centering pin includes a live end for engaging the cutting tool when rotating to thereby reduce wear on the pin.
摘要翻译：用于保持与要加工的孔轴向对准的切割工具（例如攻丝工具或铰刀）的中心包括细长主体和由限定在主体中的空腔容纳的定心销，用于在缩回位置和伸出位置之间移动。弹簧设置在主体和定心销之间，用于将销从缩回位置偏压到延伸位置，并且销包括通过设置在主体中的狭槽突出的可触及手柄。手柄可以被操纵到槽内的位置，以将定心销可释放地锁定在缩回位置。为了将中心安装在机床内，主体包括端部，该端部包括沿着主体轴向布置的多个交替尺寸的圆柱形部分，使得主体可以安装在替代尺寸的夹头内。此外，定心销包括用于在旋转时与切割工具接合的活动端，从而减少销上的磨损。

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