PM-1127VF-LB Change gears and spindle nose questions.

[Malavekio]

I purchased a used PM-1127 manufactured in 2015. came with most items and some extras except for a few things.

1. Change gears. I have the standard set of 4 gears but am missing most of the gears. Does anyone know where to source the gears from? The inner diameter is 14mm with a 5mm key. What I'm looking for are the 20T, 40T,45T, 50T, 53T,55T, 60T, 63T, 65T, and 70T.

2. I'm trying to source either a 3 jaw scroll chuck or a collet chuck (even thinking of getting a 5MT to 5C adapter if I can figure out a collet closer/drawbar. The problem is figuring out the spindle nose type to get a proper backplate. The part jutting out is 70MM. Which doesn't match any DIN standard according to my research. The PCD is 99mm according to my calculations for the studs attaching the backplate which again I haven't been able to find anything suitable.

Any help would be greatly appreciated. I wish it had a D1-4 spindle nose would would make my newbie life easier.
Thank you!

 

[FLguy]

When I bought the same lathe I was able to order all those gears at that time, so give PM a call and see.

 

[Malavekio]

When I bought the same lathe I was able to order all those gears at that time, so give PM a call and see.

I did talk to Matt and I know that he is extremely busy at this time with everything that is going on at the moment. He's been really gracious with me, and done more than I would expect since I bought the lathe second hand.

I'm continuing to look for information on the lathe myself also to make it a learning experience in the sense of what do I need to know to be able to source items that may not be available. It's a learning curve when you realize that gears have all sorts of different specs and tooth count is not the only thing that matters.

 

[ttabbal]

For the spindle, I believe it's similar to the mini lathe setups where you bolt the backplate to the nose. You might check chucks intended for those to see if you can adapt it. You might have to do some machining.

For the gears, if you can figure out the pitch and such you can look for replacements. Getting a full set at once might require help from Matt and crew.

Electronic Lead Screw

I'm going to attempt to adapt clough42's ELS to my PM1127. I figure I might as well do it publicly in case it ends up being useful for someone else. I have most of the parts now, and have the electronics and servo running on the bench. The first thing I decided to mess with is the rotary...

www.hobby-machinist.com

That is another option if you feel like it. I much prefer it.

 

[Malavekio]

For the spindle, I believe it's similar to the mini lathe setups where you bolt the backplate to the nose. You might check chucks intended for those to see if you can adapt it. You might have to do some machining.

For the gears, if you can figure out the pitch and such you can look for replacements. Getting a full set at once might require help from Matt and crew.

Electronic Lead Screw

I'm going to attempt to adapt clough42's ELS to my PM1127. I figure I might as well do it publicly in case it ends up being useful for someone else. I have most of the parts now, and have the electronics and servo running on the bench. The first thing I decided to mess with is the rotary...

www.hobby-machinist.com

That is another option if you feel like it. I much prefer it.

What is the advantage of the electronic feed screw over gluing full CNC?

I've been researching the last few days and both seem to be viable conversions. As someone new to this I am overwhelmed by the options.
Though, if you have an electronic feed screw... you might hand a set of gears you might be willing to part with?

 

[ttabbal]

I don't know if there is really an advantage so much as different desires. I am interested in using a manual machine at the moment. A CNC requires setting everything up in CAD/CAM. I'm a programmer at the day job, so it's nice not to need the computer as much sometimes.

An electronic leadscrew just means that I can use any feed rate at a touch. This is great for finding the ideal feeds and speeds for the material at hand. And threading is much easier to set up. I used to go out of the way to save all threading for the end so I could avoid changing gears as much. Now I can do it at the best time for the setup. And switching pitches isn't something to avoid.

As for the gear set, I am using one and like having the set around as a backup. One of these days, I'd like to learn how to make gears. I am a ways out from that though.