Messages

1281

G-Code, CAD, and CAM discussions / Re: Multiple Parts

« on: December 21, 2009, 10:36:59 AM »

You need to use G52 Xx Yy this is a local datum and is used like this :-

g54 g00 g90 g....... (initial start lines)
g52 x20. y20. (move x 20mm and y 20mm)
m98 p1 (call a sub or any lines of code)
g52 x0 y0 (cancel the shift)
g52 x40. y20. (move to next shift pos)
m98 p1
g52 x0 y0
etc.......

Graham

1282

G-Code, CAD, and CAM discussions / Re: Mill brake when micro machining PCB boards

« on: December 21, 2009, 10:32:04 AM »

Are you using HSS or Carbide mills, PCB board is very abrasive and needs very hard cutting tools.

Graham

1283

General Mach Discussion / Re: Probing with 032 latest lockdown

« on: December 21, 2009, 10:29:07 AM »

OK, no problem 

1284

General Mach Discussion / Re: Probing with 032 latest lockdown

« on: December 19, 2009, 09:41:20 PM »

If you do this what happens :-

Start at x4 y4.

G91
G31 X2. F15.

Graham

1285

General Mach Discussion / Re: Probing with 032 latest lockdown

« on: December 19, 2009, 11:08:38 AM »

The problem I am currently having is that the Z follows the G31 properly but the X and Y go only in one direction regardless of how I program it.

Any thoughts?

Are you using fixture offsets or G53?

Are you working in G90 or G91 are you saying that minus values move plus or what?

Graham

1286

General Mach Discussion / Re: Engraving around outside of a tube

« on: December 18, 2009, 07:02:47 AM »

There is also this software that converts images to g-code I have not used it so I can not comment on its results :-

http://cgi.ebay.co.uk/picture-to-g-code-cad-cam-cnc-software_W0QQitemZ190359039361QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2c52486d81

Graham

1287

General Mach Discussion / Re: It's Alive!! It's Alive!!! (Insert Maniacal Laughter Here...)

« on: December 16, 2009, 12:05:14 PM »

Nice looking conversion, I guess the hardest part will be making a nice looking cover. Clear Poly Carb so you can see it working maybe.

Graham

1288

General Mach Discussion / Re: Roatery Table addition questions

« on: December 14, 2009, 11:23:35 AM »

All industrial rotary tables are set up in degrees, work out how many steps it takes to rotate 1 degree and that way any program from any system can be used.

Graham

1289

General Mach Discussion / Re: Scaling Problem - Help Needed

« on: December 08, 2009, 03:21:54 PM »

OK, to correct this we need to know the pitch of the lead/ball screw the ratio of the motor to the screw (direct drive 1:1), the number of steps pre rev of the motor (normally 200) the setting of the stepper driver, 1(full), 2(half), 4(quarter) ,8(eighth), etc and if you intend to work in inches or mm

Graham

1290

General Mach Discussion / Re: Scaling Problem - Help Needed

« on: December 08, 2009, 12:11:30 PM »

You need yo ask the dealer for the Mach3 XML profile for your machine if it is not listed in the machloader program.

Graham