Messages

1921

General Mach Discussion / Re: laptop

« on: September 20, 2007, 05:25:20 PM »

You need one of these :-

http://www.transdigital.net/info.htm

Graham.

1922

General Mach Discussion / Re: circles -- oval shape

« on: September 19, 2007, 05:19:24 PM »

When you say the straight line measurements are spot on, how spot on, what are you using to check the distance, and over what length.

If the error is proportional then the steps per inch/mm must be wrong.  Are your backlash figures inches or metric?

when you check the distance moved have you removed the backlash first?

Graham.
 

1923

G-Code, CAD, and CAM discussions / Re: + symbol is not accepted by Mach3

« on: September 17, 2007, 02:36:12 PM »

Give us a clue as to what they do on a Fadal and we will tell you if there is an equivalent in Mach3

Graham.

1924

G-Code, CAD, and CAM discussions / Re: + symbol is not accepted by Mach3

« on: September 17, 2007, 10:31:20 AM »

N020 G81 G99 R0+.1 Z-0.02500 F10. this line is not legal


N020 G81 G99 R+0.1 Z-0.02500 F10. this line is

Graham.

1925

General Mach Discussion / Re: Problem setting up an xy table onto a Lathe

« on: September 16, 2007, 02:04:36 PM »

If that is all you are talking about, you don't have a problem.

Graham.

1926

General Mach Discussion / Re: Problem setting up an xy table onto a Lathe

« on: September 16, 2007, 09:46:17 AM »

Now I have seen the set up, the only real way is to clock the unit square to the axis.

Why!

I will tell you,  grooves will have tapered sides, threads will be at the wrong angle and parting off and drilling/reaming will be a tool smashing extravaganza.

You can program out tapers in faces and in diameters but coordinate rotation can not fix this. Lathes must move parallel and square to the spindle or you are in big trouble.

My solution would be :-

A little bit of accurate setting the first time and then fitting taper dowels. This will allow you to refit the unit at any time with the same accuracy.

Graham.

1927

G-Code, CAD, and CAM discussions / Re: cadcam purchase

« on: September 15, 2007, 03:39:55 PM »

If price is of no problem then :-

OneCNC or AlphaCAM

Graham.

1928

General Mach Discussion / Re: Problem setting up an xy table onto a Lathe

« on: September 15, 2007, 03:28:06 PM »

Can you post a picture of the set up and indicate where the error is, we may be able to think of a better solution with more detail.

Graham.

1929

General Mach Discussion / Re: Circle g-code in mach3

« on: September 15, 2007, 02:51:57 AM »

Hi Wellbuiltcabs,

How oval, .001 or .250", how are the axis driven, ball screws, belt and pulley,

A little more detail would help us give you a realistic answer.

Graham.

1930

General Mach Discussion / Re: ATC for lathe

« on: September 14, 2007, 11:42:55 AM »

Hi Chris,

Glad to here you are getting something out of my long, hard struggle with the program  . OK 15 minutes 

It will still need some tweeking but the basics are there, let me know when you get the thing ready to run and I will guide you through any mods.

Graham.