If anyone wants to experiment with a driven x-axis, here's a very inexpensive pulse generator that works fine for manual control of a stepper--about $4 shipped:
Feed it 9VDC, hook the clock and reverse outputs to a stepper driver, and fiddle with the knob to adjust the speed of the motor; mash one of the buttons for forward/reverse, and the other for e-stop. If it's a small motor you can even run power (up to 24V 1A) through this little guy to the stepper driver; for larger motors use this piece for pulse and f/r signals only and use a separate larger power supply to drive the motor.
Speaking of motor and driver, this looks like a good value ($34):
You might need to go up a size on the motor and driver for a larger mill. But to experiment with driving an x-axis for a small mill, under $40 ain't too bad.
Tim
On Monday, March 19, 2018, 11:27:05 PM EDT, Chris Albertson albertson.chris@gmail.com [7x12minilathe] <7x12minilathe@yahoogroups.com> wrote:
For low speed as a power feed the basic setup would cost about $80 for the motor, driver power supply and so way to control it.
--
Chris Albertson
Redondo Beach, California
On Mon, Mar 19, 2018 at 8:13 PM, soffee83@yahoo..com [7x12minilathe] <7x12minilathe@yahoogroups.com> wrote:
Thanks for the explanation Chris, I figured there was something keeping it in check.
- also for the ideas on the stepper/power feed thing. Might be something to think about as I was already considering some sort of low tech driver for the X-axis. I'll have to look into the pricing, but I've got other projects in progress.
Take Care
Chris Albertson
Redondo Beach, California
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Posted by: Tim Iafolla <iafollatim@yahoo.com>
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