Search:

guitarchitect:

Glad to, but that email looks strange. "[email protected]" doesn't seem valid. Can you send me an email address in a PM.

Thanks.

CNC-Joe tried to contact me with a PM. I tried to respond but received the following message. Do you have receipt of PMs turned off?

CNC-Joe has chosen not to receive private messages or may not...

I had a PM request for drawings. I though I'd respond here also if anyone else is interested.

I have the drawings in *.pdf and would be glad to provide them. You would have to agree that the...

I finally installed the electronics in a proper box. Just kept the 1/2” plywood backboard and installed the whole thing in a plastic electrical box. It sounds so simple but took some effort.

The...

I though a long time and ended up with the PM1022. It would be nice to have a larger lathe but space (and $) prevented that. After deciding on a 10" lathe I went back and forth a lot between Grizzly...

OK. I finished a tool post riser block.

475294

Building this I cut a new shaft for the QCTP of 5/16” 4130 round bar. Not a hard job but I could see the compound flexing. Also, the threading...

CL_MotoTech:

Thanks for the kind words.

Wood is pretty amazing. This application was simple but seems to be working well.

Almost a wrap!

I cut out aluminum pieces to go on the cross slide for way wipers and way protection. For this I used a piece of sacrificial plywood for backing.

474472

Since the four small...

CL_MotoTech:

Thanks. It's taken a bunch of time so far, and still quite a bit of clean up to go.

The encoder wasn't that difficult. It would be harder to get 100 or 200 division, but 36 isn't...

Good progress and I think (hope), all the major components are in place and working. I’ve finished the encoder and it works.

Russtuff has done a YouTube series on his G602 lathe conversion. In...

OK. I found the problem and life if good. It was simple.

But first I checked along the bed in several locations. I saw the same strange results everywhere. Then I took the shims out of the double...

I doubt it's the screw itself. Since the two nuts don't seem to align well the problem is likely there. I'll measure backlash along the screw tomorrow though. Good idea. If it still looks like the...

I need your insight and advise.

I have my PM1022 converted. Still needs work but it's functional enough to check out the motions. The X axis has one to two thousands backlash. This seems good for...

I'm slowly moving along with the lathe conversion. But there is progress to show.

I built up the electronics, mostly. It's on a piece of plywood and I hope to move this to an electronics box once...

As I mentioned the next task is to build an enclosure for the lathe. I went with wood 'cuz it's easiest for me and, since I'm not using flood coolant (just mist) it should work well. I've spent a...

dautry:

Thanks for the nice words. It's taken a little over a year so far but coming along nicely.

I had good luck with linearmotionbearings2008, no experience with zyltech. I didn't think ball...

CL_MotorTech:

I went through LinearMotionBearings2008 (e-bay) for my ball screws and nuts. I used a 20mm double nut (DFU2005 – 1000mm) for my Z, and a 12mm (RM1204 – 400mm) for the X. I got the X...

CL_MotoTech:

I'm going with the easiest controller I can think of, at least for me. I'm going to use LinuxCNC with MESA 5i25 and 7i76 cards. These are for steppers and I used the same combination...

The other end of that cover spring fits into the recess screwed to the tailstock bearing block.

471198

Finally, the other end of the bearing block.

471200

As all projects I'm involved in,...

Busy times but I've completed the majority of the conversion. The first two pics show an overall view.

471182

471184

In the last post I described mounting of the box at the head of the...

The box that fits onto the head stock end of the lathe is shown below.

471176

It will hold the Z ball screw support and Z stepper motor. A timing belt will connect the two as described...

I think I’ve figured out how to mount the tail stock bearing block. It follows very closely the original design.

470956

I spent quite a bit of time figuring out how to match taper holes in the...

I recently found we’re going to be in our summer digs, Prescott, for another month or so. I really wanted to get some work done on the lathe conversion. So, I took the utility trailer to Quartzsite...

This summer I made another go at machining the tail stock bearing block. If you remember, I had trouble with the first one due to residual stresses in the cold rolled stock. I cut the bearing recess...

Daniel:

I haven't heard from PM regarding backlash. However, I purchased their CNC kit and have it working on my mill. They offer two kits and I have the "Ultra Precision" kit. I believe I posted...

Good advice above. Let me add a couple of notes that might help.

1) To check for lost steps I'd suggest, to start, cutting air. Run your part program with no stock in the vice. This eliminates the...

Thanks. That makes sense wiring in the VFD. I just though I was missing some critical knowledge.

If you're not depending on the spindle position a little "slip" won't matter. And you're right,...

You are confusing me. How do you combine VFD and PWM control? I've thought they were two different control schemes. VFD varying the drive frequency to change the speed of an AC (induction) motor. The...

What do you plan to use the encoder for?

A VFD should give good speed control. But for that I don't think you need an encoder for feedback. A PWM (pulse width Modulated) control should also work....

The box at the headstock will bolt to the lathe bed using the same mounting holes as the gear box now does. The box is a four sided aluminum structure open the the bottom and the left. It houses the...