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    • 6. 发明授权
    • Apparatus for producing bearings in the form of press worked bush
    • 用于生产压力加工衬套形式的轴承的装置
    • US4660401A
    • 1987-04-28
    • US849067
    • 1986-04-07
    • Masayuki KohamaTatsuro WakabayashiKoichi Tsunoda
    • Masayuki KohamaTatsuro WakabayashiKoichi Tsunoda
    • B21D5/00B21D5/01B21D53/10F16C33/14
    • B21D53/10F16C33/14Y10T29/49673Y10T83/0207Y10T83/5778Y10T83/754Y10T83/9447
    • An useful method of producing a lot of bearings in the form of a press worked bush is initiated with production of blanks having four corner edges chamfered. In the notch forming and cutting die section comprising upper and lower die halves a strip of metallic material that is called hoop is pressed stepwise to form a plurality of V-shaped notches of which depth increases stepwise toward the outlet of the die section. On completion of forming of notches the hoop is cut off at the center of the last V-shaped notch with the aid of a pair of cutting tools. The die assembly usable for carrying out the method includes an U-bending die section and a circle bending die section which are located in series. After leaving the notch forming and cutting die section a blank is introduced into the U-bending die section by utilizing feeding movement of the hoop of the notch forming and cutting die section and thus U-bent blank is subjected to final circular bending in the circle bending die section also by utilizing feeding movement of the hoop. No feeding device is required in each of the press working steps.
    • 以冲压加工衬套的形式生产许多轴承的有用方法开始生产具有倒角的四个角边缘的坯料。 在包括上半模和下半模的切口形成和切割模具部分中,称为箍的金属材料条被逐步地压制以形成多个V形凹口,其深度逐渐朝向模具部分的出口增加。 在完成切口成形时,借助于一对切削工具在最后的V形切口的中心处切断箍。 可用于执行该方法的模具组件包括串联设置的U形弯曲模具部分和圆形弯曲模具部分。 在切口切割模切部分离开之后,通过利用凹口形成和切割模具部分的环的进给运动将坯料引入U形弯曲模具部分中,从而使U形弯曲坯料在圆中经受最终的圆形弯曲 弯曲模具部分也通过利用箍的进给运动。 在每个压力加工步骤中不需要进料装置。