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Gary

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Posts posted by Gary

  1. finish inside complete, then cut around out side leaving some tabs. Or cut inside complete and throw on a fixture with bosses standing to fit slots.

    Put tapped holes in middle of bosses to hold down. Second way is  safer if lots of parts.

    • Like 3
  2. I bet the part is chattering more than the cutter on that. A balanced set screw holder would probably be more rigid. But what you have ain't bad.

    I usually go inserted cutter with big step over and .075 depth of cut on something like. About the same feed rate so I don't know what would be faster

    • Like 2
  3. You really need to determine what the machine likes.  The bottom line is the machine needs to run the code smoothly and you will get good results so you need to experiment a little by posting code and running it.  My best luck has been to eliminate arcs and run strictly linear code.  I turn off arc filtering, turn on smoothing, use a fixed segment length of between .020 and .004 depending on the size and characteristics of the surface, and present arcs as line segments.  On the Makinos this will yield a surface that is perfect with no post machining finishing (.005-.0035 stepover).

    Yes shop down road with makinos and they like this, If I use smoothing on are new vm3 haas it looks nice but I can only achieve about 50ipm actual speed even if I program 400. Its smooth and not jerky just slow.

  4. I work for a company that has been in business for 30 years and they still have this mentality. They have 50 machines. Of course they bought everything with absolutely no options, like through spindle coolant. Yeah, they were all great, fell-off-the-truck bargains. Haas indexers on fanuc mills. But, when they want to make life a headache they got every possible option to do that. 

    30yrs in business. Yep must be doing it all wrong.

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