Power feed for mill table

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Power feed for mill table

This topic has 8 replies, 4 voices, and was last updated 7 September 2019 at 20:04 by john fletcher 1.

Viewing 9 posts - 1 through 9 (of 9 total)

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7 September 2019 at 11:35 #427883
Fred Madsen
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@fredmadsen58546
Hi

I have made myself a very similar setup to the one shown. My problem is that with my setup I cannot speed it up beyond it's min RPM, it just stalls the motor.

My setup is as follows – Sieg mini mill

Motor – ZHENG – ZGB37RG148 12V rpm:30

Controller – MFA – 919D2P Panel Mounted Variable Speed Regulator

I have tried loosing off the gib, changing the motor for another one, but as soon as I try to speed up the rate of the table the motor stalls. With the table disconnected I have full control of low and high speed on the motor.

I can only surmise that my motor/gearbox is wrong for this setup, can you suggest one that will fix this problem?

Fred
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7 September 2019 at 11:35 #40610
Fred Madsen
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@fredmadsen58546
7 September 2019 at 11:41 #427884
Fred Madsen
Participant
@fredmadsen58546
Sorry the topic I was referring to was – Power feed for milling table.

Fred
7 September 2019 at 13:25 #427889
Brian G
Participant
@briang
It doesn't sound like a mechanical problem Fred, otherwise the motor would not turn on minimum power. If the motor will operate at the lowest power setting but not when you turn it up, it could be that either the power supply is insufficient or that under load the motor draws more than the 5 Amp limit of the controller.

Perhaps try putting an ammeter into the supply?

Brian
7 September 2019 at 14:28 #427900
Fred Madsen
Participant
@fredmadsen58546
Thanks for your quick reply, but the motor just has'nt the power, it still wants to turn.

I think I need a stronger gearbox/motor combination. I just need it to run off 12v power supply .

Fred

Edited By Fred Madsen on 07/09/2019 14:41:00

Edited By Fred Madsen on 07/09/2019 14:44:44
7 September 2019 at 15:18 #427908
Brian G
Participant
@briang
Posted by Fred Madsen on 07/09/2019 14:28:24:

Thanks for your quick reply, but the motor just has'nt the power, it still wants to turn.

…

Sorry, I thought you meant it would turn the screw at minimum power but not when you turned the power up.

Brian
7 September 2019 at 16:59 #427927
Les Jones 1
Participant
@lesjones1
Try monitoring the voltage from the power supply. I suspect the power supply may be shutting down with the increased load when the speed controller is turned up. You could also try connecting the motor directly to the 12 volt supply.

Les.
7 September 2019 at 19:29 #427949
Brian G
Participant
@briang
Are you using a switch-mode power supply or a transformer Fred?

Brian
7 September 2019 at 20:04 #427955
john fletcher 1
Participant
@johnfletcher1
It would appear that your power supply isn't adequate for the job. Try direct running using a 12 volt car battery just to really establish that it's not the motor. John
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