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Author Topic: pcb drilling machine  (Read 1193 times)

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pcb drilling machine
« on: November 28, 2012, 06:15:28 AM »
hi
I constructed pcb drilling machine with leadshine driver and stepper motor 2A running on mach3.
I m facing a problem. The Z axis moves as

Z0
G1
Z-3
G0
Z3

It moves as instructed but moves few steps up more. After 20-30 holes Drill gradually goes up and doesnt drill at all.
I tried with Active Low for direction but still it moves upward gradually. I reduced acceleration but didint work.
What could be the reason kindly help.
Thanks

Offline Tweakie.CNC

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Re: pcb drilling machine
« Reply #1 on: November 28, 2012, 07:48:58 AM »
Changing the Active state for the Z axis Direction signal will only reverse motor direction (up will be down and visa versa). Have you tried changing it for the Step signal ??
Also may be worth checking that your drill bit is not moving in it’s collet.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.