公开(公告)号：US3713254A

公开(公告)日：1973-01-30

申请号：US3713254D

申请日：1971-05-14

申请人： O K TOOL CO INC

发明人： WILLIAMS T ,  CHEEVER L

IPC分类号： B24B3/06 ,  B24B7/08

CPC分类号： B24B7/08 ,  B24B3/065

摘要： A machine tool with a wheel for precision grinding of a ball end mill with cylindrically surfaced lands and a hemispherical end includes a template conforming to the lands and ball end mounted on a hydraulic driven workpiece table on which the ball end mill is held in a rotatable chuck. The grinding wheel is mounted on another hydraulically driven table, relative movement of the tables being hydraulically controlled by a stylus which senses the template. During grinding the ball end mill is supported and rotated by a finger mounted on the grinding wheel table which engages in the flutes between the lands of the ball end mill closely adjacent the wheel. The wheel grinds along the lands and then as grinding continues around the ball end a sliding block supporting the finger engages a stop on the workpiece table and retracts the finger from the path of the wheel around the ball end. To maintain the same spacial relation between the wearing edge of the wheel and the ball end mill as the stylus has with the workpiece template, the wheel is dressed with a truing tool on the workpiece table under the control of a dressing template. The grinding wheel is first advanced toward the truing tool by a stepping motor independently of the hydraulic table drive so that when the wearing edge is trued, the original spacial relationship of wearing edge and ball end mill is restored.

摘要翻译： 具有用于精密研磨具有圆柱形表面的平台的球头立铣刀的车轮的机床和半球形端部包括：安装在液压从动工件台上的焊盘和球头端部的模板，其中球头立铣刀保持在可旋转的 卡盘 砂轮安装在另一个液压驱动工作台上，工作台的相对运动由感应模板的触控笔液压控制。 在研磨过程中，球头立铣刀被安装在砂轮台上的手指支撑和转动，该手指啮合在与球轮紧邻的球头铣刀的平台之间的凹槽中。 砂轮沿着土地磨削，然后随着磨削继续围绕球端，支撑手指的滑动块与工件台上的止动件接合，并使手指从球头的球道周围缩回。 为了在触针与工件模板一起保持砂轮的磨损边缘与球头立铣刀之间保持相同的空间关系，在修整模板的控制下，用修整工具将工具台上的修整工具修整在工件台上。 砂轮首先通过独立于液压台驱动器的步进电机朝着整修工具前进，使得当磨损刃被修整时，磨损刃和球头铣刀的原始空间关系恢复。