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Thread: External RH threads with Acramatic 850

  1. #1
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    External RH threads with Acramatic 850

    I need to cut front side external right hand threads with an acramatic 850 controlled Cincinnati 208U TC. In order to used shop-floor programming (which I would prefer for this little project) It says the program will cut towards the chuck while turning counter clockwise. The best I understand it, I would need a tool to be inverted to do so. If I flip over ny standard threading tool, the cutting edge will be 1" below centerline. What am I missing? If the factory gave it the capability, there must hav ebeen tools to accomodate it.

    If I machine the piece backwards, I can cut the threads on the back side which would result in the chuck turning clockwise and using a standard tool. What about the next job if I can't do that?


  2. #2
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    There are tool holders that are upside down for threading. That puts the threading tool on center.


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