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MicroRouter Compact Z brake problems
Posted: Tue 03 Oct , 2006 9:11 am
by Denford Admin
I'm having problems with the Z axis on my micro router compact sticking and stalling.
The slide itself seems to run OK and has been cleared of dust, so the problem must lie above the coupling
How do I inspect the Z axis stepper motor brake ?
Posted: Tue 03 Oct , 2006 9:15 am
by Denford Admin
On the MicroRouter Compact you will need to remove the front hood metalwork in order to get to the Z axis motor and brake.
Once done, remove the two locknuts (see picture)
The brake can now be removed from the motor
You will now see something like the next picture - check that the hex nut is positioned and tight on the stepper motor shaft.
Posted: Fri 24 Aug , 2007 21:00 pm
by boots
What is the purpose of the Z brake?
Posted: Sat 25 Aug , 2007 9:15 am
by Martin
The Z axis stepper motor stops the Z axis dropping when the E Stop is pushed in or there is no power to the machine.There is no counterbalance so the weight of the Z assembly & Spindle motor can cause the axis to drift down when the stepper motor is not energised.
Posted: Tue 28 Aug , 2007 9:26 am
by Denford Admin
In other words - it'll stop the tool dropping into your job if you ever hit the e stop button whilst machining.
Posted: Thu 30 Aug , 2007 16:21 pm
by Steve
We had an instance where a machine was cutting and the estop was pressed the rotation of the cutter acted like a cork screw and pulled the Z slide down into the job because the stepper motor de energised.
If the pitch of the Z screw was greater this would not be an issue.
Posted: Fri 31 Aug , 2007 8:34 am
by Denford Admin
If the pitch of the Z screw was greater this would not be an issue.
Do you mean a
finer pitch would be better ?
