Tool holders for T2 (I think) quick change toolpost

[M250cnc]

The trick is to make a toolplate for each job.

Well you could take longer to make the toolplate than to do the job.

Looks good, you have a surface grinder then? Or are you using a toolpost grinder in the lathe to do it?

Thanks, yes i have a Jones & Shipman 540 surface grinder, FYI a toolpost grinder would be used to grind round stock, but i have a cylindrical grinder to do that.

Any grinding on a lathe is to be done under caution that grinding dust gets everywhere if your not careful, with serious consequences.

Phil

[Jonathan]

FYI a toolpost grinder would be used to grind round stock,...

Of course, but you can use it for surface grinding. Dress the wheel using the cross slide then fix the work to the faceplate. Also could be used to grind the faceplate.

[M250cnc]

Of course, but you can use it for surface grinding. Dress the wheel using the cross slide then fix the work to the faceplate. Also could be used to grind the faceplate.

But can you hold the piece to be ground on a magnetic chuck with only light magnetic force so as not to distort the piece to be ground. Then clamp to an angle plate to get it square.

Can you take a CUT of 0.000005" yes that's not a mistake, on the lathe with a toolpost grinder, can you get a part of 6" x 18" flat with a tolerance of 0.0001"

If you can then yes you can do surface grinding on the lathe.

Phil

[Jonathan]

But can you hold the piece to be ground on a magnetic chuck with only light magnetic force so as not to distort the piece to be ground. Then clamp to an angle plate to get it square.

Can you take a CUT of 0.000005" yes that's not a mistake, on the lathe with a toolpost grinder, can you get a part of 6" x 18" flat with a tolerance of 0.0001"

If you can then yes you can do surface grinding on the lathe.

I'm not saying it will be as good as a lathe, of course not. If it was you wouldn't have a surface grinder!

You can take pretty small cuts though. The dials on my lathe are graduated to 0.001", you're cutting a 200th of that so put the top slide at an angle of arcsin(1/200)=0.29° (ok that's tricky to set) to the face. Clearly in practice that method has limitations - if you want to take a reasonable amount off then you're going to run out of travel and have to keep setting it.

There was a surface grinder at school, rarely used but useful when it was. One thing they did with it was to turn the old blades from the power hacksaw into parting tools for the wood lathe.

[i2i]

[QUOTE=M250cnc;21885]Well you could take longer to make the toolplate than to do the job



obviously this is when he goes to cnc.

[Jonathan]

I will at least make a rear parting tool holder since I use the parting tool on almost every part.

[M250cnc]

obviously this is when he goes to cnc.

Are YOU doing it this way on your CNC lathe ?

I will at least make a rear parting tool holder since I use the parting tool on almost every part.

Good idea, are you gonna grind it. :heehee:

Currently Mach3 cannot use a rear tool. :sad:

You have to get round it by using G51 X-2 then using G50 at the end of the tool to clear it.

Phil

[i2i]

Are YOU doing it this way on your CNC lathe ?

On some others have autochangers

[Jonathan]

Good idea, are you gonna grind it. :heehee:

If neccecary

Currently Mach3 cannot use a rear tool. :sad:

The more I read about Mach3 the more I find it can / can't do!

You have to get round it by using G51 X-2 then using G50 at the end of the tool to clear it.

I'd count that as being able to handle it - only a couple of commands.

I now have a good stash (10) of 'genuine' tool holders:



And plenty of tools to grind and put in them:


Difficult to say how much the holders cost as I got them with lots of other things, very roughly £10 each.

[M250cnc]

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