One Big, One Smaller ... My 1st builds - TrickyCNC

[TrickyCNC]

woohoo

a box of tricks has just arrived with UPS

[BBchevy396_]

woohoo

a box of tricks has just arrived with UPS

[Joe S.]

I took my kids to see my Dad today, . . . He used to have a metal fabrication shop, so I thought I'd ask him what kind of metal I should be buying for the rails n stuff.
Off we went on a tangent, that he had a few bits he'd took out of a factory they were closing down ... linear rails and bearings, maybe some motors too ! So we went out to his workshop and started rummaging around.

some rail, 4 sets of rail and bearings, some Ally extrusion, 2 ballscrews with bearings and steppers - 5 TPI 430 Oz 29" long. and a larger stepper without a rating plate.

So, that's my other machine sorted, if I can get it all to work.

Looks to me as if You are NOT the first family member to get this idea . . .
If it were me I would do my best to involve him in the build . . . . long after he's gone you will be glad you did. I would do anything to get some hours with my Dad. IMO

[TrickyCNC]

Luckily, I can put in hours with my Dad. It's his grand kids that dont get to see him so much, as they live with their mum.

[TrickyCNC]

so, it's been a while. I been busy working, and busy being ill ... better now.

so, today I'm cleaning up the screws n motors I salvaged from my dad's.

I coul;d do with some help working out the wiring for these motors. I have an ohm meter and know how to use it :-)

so,,, what am I looking at ???

[schmutzig]

Looks like a six wire unipolar stepper motor (Google for wiring). For 11 amps the torque doesn't seem that high. If those numbers on the end plate are accurate a stepper driver for the motors might cost more than modern motors (that are more efficient and require a smaller stepper driver) with the same torque and the stepper driver combined. Though I'm still pretty new to this stuff, you should get a second opinion.

[TrickyCNC]

Looks like a six wire unipolar stepper motor (Google for wiring).

But then this forum would die !

I am here looking to join in and interact :-)

As for new would be cheaper .. I'd like to at least see them move, even if under powered ! I just have this thing about getting old stuff working again !

Rich

[louieatienza]

I have some of these slo-syn steppers, with the wiring schematic. If I can find it I'll scan it and post it here...

[TrickyCNC]

I have some of these slo-syn steppers, with the wiring schematic. If I can find it I'll scan it and post it here...

Thanks Louie, would appreciate it

[acondit]

Here is an image file that I have been keeping around. I think I have a new (old stock) M093 stepper also. I would sell it to you real cheap.

My recollection is that M093 was called a triple stack and the M092 was called a double stack.

Alan

[TrickyCNC]

thanks acondit

mine have 6 wires, I dont know if the wiring diag will have any relevance to me ?

as for the cheap motor offer, thanks , but as I'm in the UK, the shipping would be more than the motor is worth ! besides, I have some new motors, I just wanted to see these working, as they're all coupled up to the screw etc.

Are there any newbee guides to steppers out there ? is it just a case of finding the individual windings with a meter, and trying a few combinations ?

How delicate are the drivers ? will they stand up to being connected wrongly to a motor ? Ive read that if they become disconnected they will blow ?

Rich

[bobsch]

Here's a good intro to steppers from Gecko. Support

[acondit]

Rich,

Here is another set of connections this comes from a Superior SloSyn SS2000MD4 driver manual. See if this helps.

Alan

[TrickyCNC]

thanks both

I think I am confident now, that I'll be able to figure out my motors wiring.

I need to read up a bit on drivers next, as I dont want to burn one out by 'experimenting' !

[TrickyCNC]

so, with the build plan....

what's that saying ?

The more you learn, the more you realise you dont know anything !

I could get in the trap of needing to know more, wanting more accuracy
etc

then you see the drawer slide thread ... built and working in two weeks !

hmm... I'm gonna get some metal next week and make a start

the plan is to at least make something, even if I need to start over when it's done

[bobsch]

the plan is to at least make something, even if I need to start over when it's done

I thought that was a requirement around here.

[TrickyCNC]

OMG !!!

I went to the metal wholesalers today to get some prices




I think I will have to get clever with wood !

Anyone have any good links to info on torsion boxes ? :-)

[arizonavideo]

Did you price thick wall tube? 1/6" wall square is not too badly priced over here. I just got some 3" for about $2.00 foot.

Steel has been up for a long time, for a lot of things I have found that used aluminum is a better deal but for larger tables steel is just more ridged.

[TrickyCNC]

The whole reason for steel was the rigidity, as the table cutting area will be 8' x 4', so I was pricing 1/8".

I will just use steel for the rails now.

[TrickyCNC]

linear rails ...

So, I havent seen this setup for rails so far.

I am cheaping out again, and cutting costs.

The thinking is, angle is more cost than bearings, so as an example, for my X axis, I am thinking one angle per side, (I usually see two).

Please excuse the rubbish drawing. I am learning to use this free software (qcad) and I guess I need to make a library of some kind, but I got bored !

As far I I can think, this setup should work.
The angle rail is secured to the bed and two sets of 4 bearings (one set shown) hold the y and z directions in place.

I am also hoping to use the top of the rail for my drive setup. Belt ATM, but maybe R&P

What do the 'experts' think ???