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Let's say it a different way then, are you looking for:


Better tool life
Faster cycle time
Avoidance of catastrophic tool failure
Better hole quality


Or <said yet another way> what...

Though what you say is true, the OP stated the use of a Citizen A20 - which is a bar fed machine.

I've had good luck with Crazy Drills, also check out...
Nachi "Aqua Drills"
Mitsubishi and OSG also have some good offerings

And, how would you define...

There is not enough information to give you a good answer, but I'll offer the following with respect to running a swiss machine main spindle at high RPM...
Machine longevity is only a part of the...

I know right!

Are any of the shops you talked to companies that have both machines on the floor?
If not, I would see if either builder could provide you with companies that have both machine...

I am a Citizen shop <not in Michigan> that has never run Star machine.
Citizen nationally is supported extremely well with many of their distributors having people that have been in place for...

I obviously do not have the specs - but the model rendering looks like this could be done with a macro.

Another "Clunky" and potentially error prone way to solve your problem of memory would be...

How about this area <crudley denoted in red>?

are you using 3D surfacing for the ID shape?

How complex is the part, can you show an example - print or photo?

Do you know much about macro?

It's been a while since I've run this machine, I have two questions...

Is 640M all that you have or all that it can be expanded to?
Are you out of room because of CAM output i.e. lots of point...

Sorry to say, I have no information about that Philadelphia area.
I am interested if you would be willing to share your thoughts on the CAM programs mentioned as they apply to swiss programming....

This is correct.

Thanks for posting the link, it's pretty nice!
Looking through it reminds me, though I am pro-mitsubishi, it does lack this syntax...


IF[<condition> EQ <true>] THEN<do something>

Which does...

There are quite a lot of things at play here.
Checking the position with an indicator is only one of them.
I would use the part itself to determine this, as this is also what your customer will be...

As I recall, you use the Z-Len setting on the Preparation page.
The difference between what you are used to with newer control and the older is the data.
On the new, if you leave Z-Len at zero, the...

I would do it like this then...

Save all your probed points in variables #101-#129 {points 1-29 i.e. #101 is point 1 and so on}.

Run this Macro...



#1=101(initial count var)...

Will you be doing work at all 29 locations?
What happens if the range is too high? Part is rejected? Part needs realigned?

It sounds like we do not have all the information to help you with what...

Do you need to "remember" the location of the high and low points?
Or just know the range?

I think most shops that are "serious" about bone screws have gone to thread whirling.
The methods you've attempted are all decent, especially for "casual" or infrequent bone screw jobs.
Each has...

If i recall, they are stored in the offset variables that are higher than 40.
So you can poke around with the values like this:
#500=#10040-99 on up to #18040-99.
Hope that helps, let me know...

Another option, if you have the tools available, is to use a small center drill and put "tiny" spot on the face.
I'm talking like ...
G1 Z.0020 F.001

This is generally indistinguishable on...

Might I suggest your local Citizen distributor, they should be more than glad to assist you with specifics.

Have you performed a zero return for these axiis?

Unless I'm missing something here, to do what you want, you'll need to use milling interpolation.
With MI, you would position "X" at the [radius + eccentric], then G2/G3 with an "I-radius".

Any alarms?
Have you tried it with the spindle off?
You say that you replaced the motor and ball screw, was that because of this issue?

What is your RPM just prior to opening the collet?
It may be that it's right on the edge of what is allowed and needs to be lowered to open the collet.
Does this machine have servo motor for collet...

Could you provide a sample of how you do the groove now, that is to say without the macro.
Do your rough and finish?
Do you profile the final shape?
Do generate the radii using G2/G3?
I will do...

if you can provide some further details of what you want to do, I may be able to get you pointed in the proper direction.

Your control manuals should have some decent information about the commands and such (the Mitsubishi manual are pretty decent).
Macro programing is like a blank slate, so everyone is a custom, not...