滚孔刀

Hobbing cutter

Abstract

The utility model discloses a hobbing cutter which comprises a cutter bar and a cutter sleeve; the cutter bar is in threaded connection with an adjusting gear, a locking gear only capable of sliding axially is mounted on the cutter bar and is positioned above the adjusting gear, the cutter sleeve is movably nested on the cutter bar and is positioned under the adjusting gear, the upper end of the cutter sleeve is provided with a convex shoulder, a plurality of conical pin rollers capable of sliding along the radial direction of the cutter sleeve are embedded on the cutter sleeve and are annularly distributed on the lower end part of the cutter sleeve, the included angle of each conical pin roller and the axis of the cutter bar is equal to the conicity of the conical pin roller, a conical surface contacted with the conical pin rollers is arranged on the cutter bar, an adjusting sleeve is arranged on the exteriors of the adjusting gear and the locking gear, locking teeth and adjusting teeth respectively meshed with the locking gear and the adjusting gear are arranged on the inner surface of the adjusting sleeve, and a spring with both ends respectively supporting the convex shoulder and the adjusting sleeve is nested on the cutter sleeve. The hobbing cutter with the structure has simple structure, is convenient in use, ensures the inner hole surface to have high degree of polish and high compactness of surface texture, and also improves the pressure bearing capability of the inner hole surface.
本实用新型公开了一种滚孔刀,包括刀杆和刀套,刀杆上螺接有调节齿轮,刀杆上装有仅能轴向滑动且位于调节齿轮上方的锁定齿轮,刀套活套在刀杆上且位于调节齿轮下方,刀套的上端设有凸肩,刀套的下端部环布有镶装在刀套上的多个可沿刀套的径向滑动的圆锥状滚柱,每一圆锥状滚柱的轴心线与刀杆轴心线的夹角与其自身锥度相同,刀杆上设有与圆锥状滚柱接触的圆锥面,调节齿轮和锁定齿轮外部设有调节套,调节套内表面上设有能与锁定齿轮啮合的锁定齿和能与调节齿轮啮合的调节齿,刀套上外套有两端分别顶压在凸肩和调节套上的弹簧。该结构的滚孔刀结构简单,使用方便,能带来内孔表面光洁度高、表面组织致密性高以及能提高内孔表面承压能力的有益效果。

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-101947715-AJanuary 19, 2011山东浩信机械有限公司Hole-rolling knife
    CN-101947715-BDecember 26, 2012山东浩信机械有限公司滚孔刀