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    • 18. 发明授权
    • Counterbore boring and refacing tool
    • 沉孔钻孔和补偿工具
    • US4414869A
    • 1983-11-15
    • US253599
    • 1981-04-13
    • Paul M. Augustine
    • Paul M. Augustine
    • B23B3/24
    • B23B3/24Y10S408/709Y10T408/5647Y10T82/2522
    • A tool for machining or repairing a worn counterbore in the cylinder block is provided with a feed control device. The refacing tool has a base structure which is attachable to the engine block. A shaft is rotatably and slidably mounted in the base structure in alignment with the counterbore and the shaft is operable by hand or by a power mechanism. Secured to the lower end of the shaft is a cutter head carrying a cutting tool mounted in a position to engage adjoining faces of the counterbore. The feed control device has an internally threaded tubular body secured to the base structure and a feed screw is threaded into the body to extend alongside the shaft. A feed plate is secured to the shaft to engage the top of the feed screw so that downward movement of the shaft is limited by corresponding movement of the feed screw. Between the feed plate and the feed screw there is a drive mechanism which rotates the screw as the shaft is rotated. The arrangement allows both faces of the counterbore to be machined with the cutting tool being controlled as it is advanced to its work by the feed control device.
    • 用于加工或修理气缸体中的磨损沉孔的工具设置有进给控制装置。 该重构工具具有可附接到发动机缸体的基座结构。 轴可旋转并可滑动地安装在基座结构中,与沉孔对准,并且轴可通过手动或由动力机构操作。 固定到轴的下端的是具有安装在与沉孔相邻的面接合的位置的切割工具的刀头。 进料控制装置具有固定到基部结构的内螺纹管状体,并且进料螺杆被拧入主体以沿着轴延伸。 馈送板被固定到轴以接合进给螺杆的顶部,使得轴的向下运动受到进给螺杆的相应运动的限制。 在进给板和进给螺杆之间有一个驱动机构,当轴旋转时旋转螺杆。 该装置允许在通过进给控制装置前进到其工作的同时控制切削工具来加工沉头孔的两个面。