• CN 2,041,602 U
  • Filed: 12/26/1988
  • Issued: 07/26/1989
  • Est. Priority Date: 12/26/1988
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of lathe that is used for, rotary cutting tool such as fastening drill bit, milling cutter, reamer and outer wall are the chuck of circular workpiece, by the chuck tube (2) of clamper main body (1), bottom and the revolving drum (3) of chuck tube outside, and maintenance tube (5) between chuck tube and the revolving drum and porcupine roller composition, it is characterized in that:

  • described porcupine roller is that diameter is the shaped form porcupine roller (9) of (being that outer surface is a surface of revolution) small in the end and big in the middle;

    On the inwall of described chuck tube (2), be provided with arcuate recess (3) vertically;

    Described clamper main body (1) is an one with chuck tube (2).

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