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    • 8. 发明申请
    • GUIDE BUSH AND METHOD FOR FORMING A HARD CARBON FILM ON AN INTERNAL CIRCUMFERENTIAL SURFACE OF SAID BUSH
    • 导线总线及其制作方法在硬质合金内部圆周表面形成硬碳膜
    • WO1996028270A1
    • 1996-09-19
    • PCT/JP1996000580
    • 1996-03-08
    • CITIZEN WATCH CO., LTD.MIYA, YukioSUGIYAMA, OsamuKOIKE, RyotaTOIDA, TakashiKIMURA, SosakuKOKUBO, Kunihiko
    • CITIZEN WATCH CO., LTD.
    • B23B13/12
    • B23B31/202B23B13/125B23B2222/28B23B2222/88B23B2231/2059C23C16/0281C23C16/045C23C16/26Y10T279/17418Y10T279/17452
    • A carbon film (15) is formed on an internal circumferential surface (11b), in sliding contact with a work (51), of a guide bush (11) provided on an automatic lathe for rotating and holding the work (51) in such a manner as to slide in an axial direction in the vicinity of a cutting tool directly or via an intermediate layer for improving adhesion strength, or on a hard member provided on the internal circumferential surface directly or via an intermediate layer for improving adhesion strength, thereby making it possible to remarkably improve the durability of the guide bush (11), to eliminate a risk of flaws being generated in the work even when the guide bush is used for a long time or used under heavy cutting conditions on the automatic lathe and to prevent the occurrence of seizure that results in cutting failure. In addition, an auxiliary electrode is disposed in the guide bush (11) in a vacuum tank, and plasma is generated by gas containing carbon so as to form a hard carbon film, thereby making it possible to efficiently form on the internal circumferential surface (11b) a hard carbon film (15) that has good adhesion strength and a uniform film thickness.
    • 在设置在自动车床上的引导衬套(11)与工件(51)滑动接触的内周面(11b)上形成碳膜(15),用于将工件(51)旋转并保持在其上 可以直接或通过中间层在切削工具附近沿轴向滑动以提高粘合强度的方式,或直接地或经由中间层设置在内周面上的硬质构件上以提高粘合强度,从而 使得可以显着地提高导套(11)的耐久性,即使在长时间使用导筒或在自动车床上在重切削条件下使用时也消除了作业中产生缺陷的风险,并且 防止导致切割失败的发作。 此外,辅助电极设置在真空槽内的引导衬套(11)中,并且通过含有碳的气体产生等离子体,以形成硬质碳膜,从而可以在内周面上有效地形成 11b)具有良好的粘合强度和均匀的膜厚度的硬质碳膜(15)。