Thread: DM 45 power feed

Its pretty much self explaining how it goes together .... I made a puller ( seen with bolt ) to remove the drive collar as it is a tad tight on the shaft .

I made some tiny steel bushes to fit into the plastic gear . With the electronic controller, the motor speed is variable down to a very slow RPM

BTW thanks Stuart for the 5 BA screws ....

MIKE

Looks good Mike. I made one for my HM45 mill a couple of years ago. I used a 24V gearmotor I got off Ebay and made a dog clutch so it could be dis-engaged.
I'd be interested to see how yours goes, speed wise.
Are you having a push button for 'high speed' traversing?

Sterob

sterob

As I was removing the motor from the car , I manually pushed the wiper arm mechanism to check out the force required . It takes quite some force to move those arms across the windscreen The plastic gear and drive worm assemby won't be under anything like that load in the mill-drill.

Yes I will install a quick rewind switch ... a resistor wired in . The controller is rated at 5 amps ... MIKE

HI,
I will be interested in knowing how it Works out. I have the exact same DM45 Mill Drill. I have thought about about making one Myself in the Past after seeing Steve's Website. I have never got around to it though. I hope it goes well for You.

Originally Posted by morrisman

I have been making this power feed .. I found the concept on Steve's web site in WA

A simple idea but he says it works .... The motor is a XD -XF Falcon PRESLITE brand .. common as chips . Almost ready to test it

MIKE

Watching with interest Mike, for obvious reasons.

Could you put up a link to this website, Steve in WA?

I have just performed some preliminary tests .

After some minor adjustments, it is working great . The meshing adjustment of the gear and worm is a bit touchy . The motor is sounding rather growly , it sounds like ..... well, a wiper motor !!

I will apply some vaseline to the gear .

Big Shed , Steve's site


Steve's Tool-Works

Hi Mike,
Glad you found a use for them.

Does the motor sound the same running on straight 12VDC? maybe its the speed controller making it growl.
Have you cut some steel yet?

Stuart

Originally Posted by Stustoys

Hi Mike,
Glad you found a use for them.

Does the motor sound the same running on straight 12VDC? maybe its the speed controller making it growl.
Have you cut some steel yet?

Stuart

Stuart

Yes I milled a small test piece of mild steel ..Its very nice . The speed slows right down to a crawl with the PWM controller . You need to slacken the gib levers off as its only a small motor and it doesn't like too much resistance . It doesnt look like it will stall at all , but having the table free to move does help .

It has quitened down a lot since the table moves with less resistance . I can hardly notice any noise now.

It is somewhat fiddly removing and inserting the drive collar with its two prongs but apart from that , it performs well .

Mike

I turned some lugs and milled some brackets up, I can remove the box and have a remote control. This pic shows the box sitting out of the brackets ..just resting there .

Mike, what is the origin of the controller?

Originally Posted by Bryan

Mike, what is the origin of the controller?

Bryan

It is one of the cheap Chinese PWM boards from EBAY ..$15 I think it was .. 5 amps rating .. with forward / reverse , speed control too . I made the box up . MIKE

Board >>>>>>>>>>>>>

I just bought the seat base from the VX commondore to make the ride-on car for the kids and thought i might be able to use it for power drive?



VID 20120110 195305 - YouTube

Originally Posted by jackaroo

I just bought the seat base from the VX commondore to make the ride-on car for the kids and thought i might be able to use it for power drive?



VID 20120110 195305 - YouTube

They look a little small to me. Any idea of the current draw or wattage of the motors? Speed looks a bit slow as well.
Let us know what you discover.
From what I've seen, the commercial units have a speed range of 0-200 rpm with a high speed traverse of around 240 rpm, just to give you an idea.