Beaver Knee mill conversion- by a newbie

[JAZZCNC]

Just a minor correction, 2500ppr becomes 10'000Cpr.

Yes noticed after posted didn't put counts but didn't think in this case needed correcting because I gave the figure OP needed.

[ukmxer]

OK, thanks for your help, looks like I have some studying to do.

I have the X axis mounted and working. i set it up using the settings menu,set steps per unit. My mill has its own DRO, so I used that to help me config steps per.

Bit of a bodge, but I was not sure it would work, i will make new plates for the X and Y once i have it working.
The backlash is massive at the moment so I will have to adjust that, before I use the machine in anger.

I am installing a digital tachometer today. The Varispeed seems way off what it is supposed to be.

I have something wrong somewhere, It would occasionally do a small weird oscillation as if it was looking for its position and would then give an error on the drive.Other than that it was working great.

I have brought my Y axis motor back into the house, so I can play about with mach 3. Its cold in the workshop and a little damp at the moment. I am on with my Y axis motor mount, so time permitting I will have it running in the next two week.

[JAZZCNC]

I have something wrong somewhere, It would occasionally do a small weird oscillation as if it was looking for its position and would then give an error on the drive.Other than that it was working great.

I have brought my Y axis motor back into the house, so I can play about with mach 3. Its cold in the workshop and a little damp at the moment. I am on with my Y axis motor mount, so time permitting I will have it running in the next two week.

The oscillation is because the drive is struggling to settle and find position the drive then faults because couldn't find position fast eneough. you'll need to play with Gain(PID) settings in the drive. But first I'd check your table is moving freely and the Jibs etc are not too tight.

Also you cannot set the PID settings or rather tune the motors on the bench. To do this correctly must be on the machine and working exactly as would in use. By that I mean with all guards, vise's etc permanently on machine while in use so can tune to weight your shifting.

[ukmxer]

Thanks for your help Jazzcnc.
The jib strips are worn and awkward to set. As soon as I have done the motor mounts the table is coming off so I can put oil feeder lines in, so I will do the jib strips then.

[JAZZCNC]

Thanks for your help Jazzcnc.
The jib strips are worn and awkward to set. As soon as I have done the motor mounts the table is coming off so I can put oil feeder lines in, so I will do the jib strips then.

Yes often the case on old Iron. Many people try to tune there way out of sloppy machines but all there doing is stressing motors/drives when good strip down/clean and setup is all that's required.

Wouldn't mess around with any PID settings until you have done this and took as much backlash out as possible.

[ukmxer]

Just installed a tachometer. And it looks like the speeds were out.

[ukmxer]

I forgot to say earlier , I used a piece of software called gearotic 3 to calculate the belt length from the pulley sizes and pitch centres.

[m_c]

Just installed a tachometer. And it looks like the speeds were out.

You'll probably find somebody has had it apart at some point, and not realigned the gauge correctly.