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Messages - amtech

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General Mach Discussion / Re: CANNED G77/G78 LATHE CYCLE HELP??
« on: February 18, 2019, 10:53:38 AM »
just for resurection sake.... I recently rebuilt my machine and found m0177 wasn't working. Did an online search to find out why, and found this 10 year old post that I'd forgotten about! Thanks to my younger self for fixing my problem!

General Mach Discussion / Re: CANNED G77/G78 LATHE CYCLE HELP??
« on: August 06, 2008, 06:48:57 AM »
I've looked at M1077, and found that theres a problem (in my case anyway) with tapers of 0 (ie, reduce the diameter of stock). I've 'fixed' the code and that now works. Tapers seem to work (haven't checked the angle calcs) but the Tx.x parameter is being interpreted as a toolchange instruction...?!

In ports and pins/turn options you can set cut depths etc so in its' most basic form you'll just do a touch-cut on your stock, set the part-zero, then G77 Xx.x Zx.x  where X and Z are the final diameter and length of cut. The macro figures out how many passes to make based on your turn settings.

Here's the modified macro if it's of any use.  Take out the 'andy' in the filename. As always, remember to take a copy of your original M1077 first!

General Mach Discussion / Re: CANNED G77/G78 LATHE CYCLE HELP??
« on: August 05, 2008, 06:30:47 AM »
Anyone got G77 or M1077 to work? Is it something that only works in a full version of Mach?
It would seem that the most common thing you'll want to do is to reduce the diameter of your stock- without having to write multiple lines of G01!
G78 seems to work ok.

Note... not a complaint, Mach3 is great! I just want to be sure that I should persevere with G77!


VB and the development of wizards / Re: Boxford ATC
« on: July 29, 2008, 09:31:34 AM »
macro M3000 allows you to jog the ATC

VB and the development of wizards / Boxford ATC
« on: July 29, 2008, 09:29:54 AM »
My first post (typed for the second time! arrrg!)

I've just converted my Boxford 240TCL along with its' 8 position rotary ATC.
To drive this I've had to create (using macros found here as a base) some macros.

The Boxford ATC uses a stepper motor to drive the changer round, past a latch. The stepper then reverses to lock against the latch.
I've used the Y axis to drive this, set up at 20 steps per mm- which works out at 1 degree. So, each position requires a move of 45. This is done in incremental mode, as you lose steps when the stepper stalls against the latch.

So, set up your machine home position- somewhere safe where nothing expensive or painfull will happen when you change a tool!
Next, run macro M2000. This allows you to jog the atc forward, past the latch, reverse it on to the latch, as finally tell the current tool DRO, and DRO(1200) which tool you're currently at.
Make sure you have an entry in the tool table for every position in your ATC- otherwise you won't be able to select it and odd things will happen.
While you're there, ensure that the tool offsets are setup, as the new tool you select will return back to the workpiece at the same position it was before the ATC call.

The M6 macro will now allow you to select any tool. Just use eg. T0606 in your Gcode.

Hope this helps, even just as a base for your own macros. I'll be tweaking this so check back soon.

Take out the 'andy' from the attached files- it's the only way I could get them to upload! and remember to take a copy of your originals first.

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