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back at the BP to pc conversion

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  • back at the BP to pc conversion

    Hi all. finally got back to working on the mill. I wired up the ac drive. I was wondering if it would be more convenient to just install a pot switch on the control panel instead of having the computer control it. Is there a reason one would be better than the other?Have wires already in place so really just need to install the switch.

    I also fixed the air powered speed control that came on the mill. My thinking is that the computer will not know the true speed of the spindle if I also change the vari speed pulleys.

    Jim

  • #2
    Suppose better lathe than never.

    You need spindle feedback. You can do it all sorts of ways, encoder, fiber optic retro-reflective sensors. This signal goes back to mach and tells it how fast the spindle is running.

    I used to pick up the speed off the nose of the spindle till I went to a 30 taper and didnt have room left. Now I pick up off the fixed side of the reeves pulley. I use a keyence fiber optic retro reflective sensor.

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