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Cutter load is not constant so if the table doesn't deflect under light load but deflects 0.05mm under higher load then a natural consequence would be chatter.

you still haven't answered the...

It seems you already know the cause of the chatter.(chair)

Phil

You didn't answer all the questions.

How did you set the bearing preload when you replaced the spindle bearings?

0.015mm runout on a spindle is a lot.

Phil

You don't provide a great deal of information to go on.

How old is the machine?
How mach use has the machine had?
Which model machine is it?
Can you post a photo of the chatter marks?
Is the...

What diameter/type of cutter are you using, what depth of cut and rpm, what material? A DTI only measures the no load condition. The root cause maybe that your machine is not sufficiently rigid to...

Thanks for that.

Phil

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Why on facebook and not here. Not everybody is keen on facebook, even more so with recent developments?

I am in the market for a good pendant that is fully functional with PP. What's the spec...

Personally I don't know what real machinists do or don't do but I do know that sensible people check what they are buying before they do. Seems like your biggest problem, which you have failed to...

So what's the story behind the before and after photos in post 32. If you want help with the diagnosis you need to explain what you did to cause things to go backwards after post 32?

Phil

Did you not solve the problem in post 32 or have I missed something?

Phil

You can get away with this simpler procedure on a manual mill but it is not suitable for a CNC mill. A manual machine with a lead screw rather than a ball screw will always have some lost motion so...

I thought you solved the problem back in post 32. Quote:

Wohooo! Solved! So Tormach support suggested adjusting Y gib as you guys did here. So I went and adjusted it as described in manual and...

What am I missing. Surely rotation of even a bent y axis ballscrew would have no influence on the tables' x axis location if the y axis gib is adjusted correctly and there is no slack in the x axis...

You need a parallel port and cable not serial. How did you manage to connect a serial cable to your Tormach mill?

Phil:)

Well it did at least get you to ask the right question.(group)

Phil

Link: Google .... search: IR540 price.(chair)

Phil

How does the position of the table, especially in the x axis, impact on the 3 point contact with the 2 shimmed outriggers during set-up.

Phil

From the manual:

If you do decide to make an adjustment, do not assume where the error is from. The error could be attributed to a specific problem, or from the combined effect of several...

How did you recognise that the three phase motor was wired incorrectly?

Phil

I'm confused. You say T slots are correct, then you ask did I get a mill with T slots to short.

The T slots on the table should be manufactured to a standard, check this on the internet. If the T...

Google is your best friend. Search - tee slot dimensions.

Phil

I'm new to pathpilot so take the following for what it is worth. Is the z axis all the way up, or down, ie. is the limit switch tripped. If it is then you can go to (I think it is in settings) and...

How did you evaluate the impact of the blind hole out of roundness on the ability to hold the bushing in place when in use.

Phil

Well done, but not very helpful. Procedure?

Phil

There you go. You need to press the bushing in straight or you may bell the aluminium hole. Use a vise or better still use the mill with a guide spigot in the spindle and the bushing and while the...

Loctite. Otherwise I think you are into reamer tolerances and bushing diameters to + or - a tenth or so. You will never contour mill the hole to the necessary accuracy.

Phil

This seems to be the best permanent solution. I disassembled a scorched plug connector and examined the components under a microscope together with the board connector pin. I couldn't see any...

Just google - er40 r8 collet chuck -. You will also need a spanner and a few er40 collets.

Phil

PS: make sure you get one with the correct draw-bar thread.

Thanks for that RJ, a very useful and detailed write-up. The plugs on my axis drivers are starting to show signs of charring on pin five. I've ordered some replacement Phoenix plugs. I don't have the...

Import to Europe has been discussed several time on this forum over the years. Here's a link to one that I found.

http://www.cnczone.com/forums/tormach-personal-cnc-mill/252420-tormach.html

Phil