Help with drill-Mill conversion

[irving2008]

Get a cheap thermoprobe from Maplin (£19, here) and check motor case temp. Anything above 85degC and you need to be thinking cooling/heatsinks on the motors.

[Ross77]

Thanks Irving, Already got that on my meter, and one of those infrared jobbies.....Just forgot to use them.:whistling:

So is it ok for the motors to get hot if i provde cooling to hopfully keep below 85 degC?

With regard to your L297/ 6203 driver do your motors buzz whilst hold?
Also have you got the contol pin set high or low?

Cheers

[Robin Hewitt]

Anything above 85degC and you need to be thinking cooling/heatsinks on the motors.

D'uh

I've never run a stepper past comfortable to touch, usually lukewarm to tepid. Am I not trying hard enough :naughty:

Isn't there something about eddy currents heating things up? No possibility he's driving one coil with the other shorted out I suppose? That would be the perfect recipe for slow'n'hot :heehee:

Robin

[Ross77]

Problem solved........:whistling:

It all went up in smoke tonite, flames an all. quite impressive :heehee:

Looks like I need a new 3 axis stepper driver.

2 steps forward 5 steps back eh.

[Robin Hewitt]

It all went up in smoke tonite, flames an all. quite impressive :heehee:

Bit late for a photo i suppose :whistling:

Unless you chuck a bit of paraffin over it :naughty:

[Ross77]

Glad you found it funny. I'm £50-60 out of pocket now to replace it tho

Unless you chuck a bit of paraffin over it :naughty:

Could be arranged, and very tempting, but being a tight git i'm going to rob the heat sink ect from it first.:dance:

I cant find any cheap drivers that work over 40v so looks like I cant even use the psu.

[irving2008]

Glad you found it funny. I'm £50-60 out of pocket now to replace it tho



Could be arranged, and very tempting, but being a tight git i'm going to rob the heat sink ect from it first.:dance:

I cant find any cheap drivers that work over 40v so looks like I cant even use the psu.

Sadly most stepper driver chips are 35 or 40v max... so 30 or 35v supplies. To go above that you need to be looking at discrete MOSFET drivers, but these tend to be are rare and expensive..

[Robin Hewitt]

Glad you found it funny. I'm £50-60 out of pocket now to replace it tho

I've done worse, not on the large hadron collider scale perhaps, but whaddya do? Personally I remind myself that it's business and in business you always start from where you are now.

OTOH, being business I do get to buy the cloud of smoke pre-tax and reclaim the VAT :whistling:

I understand your pain :nope: