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General Mach Discussion / Re: Setting up a 4th axis?
« on: July 05, 2008, 04:18:21 PM »
While we are on the subject of this,
I have a fairly big Bristol Erickson indexing head that I am planning on converting to a 4th axis at some point in time. It has a worm driving it at the moment but it has too much baclash for my liking and no way of adjusting it without major headaches. I am planning on removing the gear and getting a big timing pulley to put over the spindle (2inch bore I think) I will then fit one of the AC Servos I have with a 6:1 backlash free gearbox that it came with and fit a timing pulley to it. The servo has a 2000 line encoder so resolution wont be a problem, it also has a continuous stall torque of 10Nm so with the 6:1 box that will be 60Nm continuous (8500 ozin approx) I will have a 10 inch chuck on the axis.
Anybody see problems in doing this?
Hood
I have a fairly big Bristol Erickson indexing head that I am planning on converting to a 4th axis at some point in time. It has a worm driving it at the moment but it has too much baclash for my liking and no way of adjusting it without major headaches. I am planning on removing the gear and getting a big timing pulley to put over the spindle (2inch bore I think) I will then fit one of the AC Servos I have with a 6:1 backlash free gearbox that it came with and fit a timing pulley to it. The servo has a 2000 line encoder so resolution wont be a problem, it also has a continuous stall torque of 10Nm so with the 6:1 box that will be 60Nm continuous (8500 ozin approx) I will have a 10 inch chuck on the axis.
Anybody see problems in doing this?
Hood