Hi guys.
The Z axis motor on my South Bend Heavy 10L with the 8 TPI lead screw is using the max 3A drive current from the internal micro-stepping driver inside my ELS. I found that 2:1 is more than adequate for power. I've never bogged it down for any turning or threading operation in the 10 years. As seen by the dust on the motor surface the one pulse per spindle rev ELS has worked perfectly just like the thousands of MACH3 systems out there.
The motor mount is a simple casting used twice so the motor would clear the bed at the back and the base would still fit on the drip tray.
I bought a surplus lead screw end bracket and milled some of it away so I could mount a shaft extension for the pulley.
If you want 1:1 for this size of lathe generally a size 34 motor drawing about 7A tends to be what others are using in the MACH3 and ELS world.
John
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-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Richard
Sent: March-19-20 12:13 AM
To: [email protected]
Subject: Re: [digitalhobbyist] #LATHES Spindle Encoder Update
I feel that you are seriously underpowered. If using a 3Nm stepper I
would run it at 2 to 1 or more with an 8tpi screw.
Richard
On 18/03/2020 17:33, Ralph Hulslander wrote:
That was a first try at getting something to at least hold the motor
close to where it might go. I have other mounting ideas also.
The leadscrew is ??-8 Acme here is thestepper motor
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Ralph
On Wed, Mar 18, 2020 at 1:10 PM Richard <edelec@...
<mailto:edelec@...>> wrote:
I should think so when you have it mounted on a bit of thin sheet!
What
Torque motor is that? and what pitch leadscrew?
Richard
On 18/03/2020 16:00, Ralph Hulslander wrote:
> Oh did you see I have a rough prototype mounting for my Z stepper
> motor. That needs a lot of work.
> I can feel the motor binding when I turn the leadscrew.
--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill
press, 40 watt laser, Consew brushless DC motors and a non working 3D
printer
