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Draw bar actuator for vertical milling machines

  • US 20070286695A1
  • Filed: 06/09/2006
  • Published: 12/13/2007
  • Est. Priority Date: 06/09/2006
  • Status: Abandoned Application
First Claim
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1. An actuator mechanism arranged on a top head portion of a Bridgeport-type vertical milling machine, for controlling intermittent, tool-changing longitudinal movement of a collet-supporting drawbar in said Bridgeport-type vertical milling machine, said actuator mechanism comprising:

  • a pressor pin supported on said head portion of said vertical milling machine, said pin arranged in reversibly abutable contact with the upper end of said drawbar; and

    a biasing member for effecting movement of said pressor pin against said upper end of said drawbar to effect movement of said drawbar and change of a collet and tool thereby.

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