Messages

1091

General Mach Discussion / Re: Is Mach Stopping My Stepper Driver?

« on: December 13, 2010, 05:27:39 AM »

The German ones open but not the English version, no real detail though.

Graham

1092

General Mach Discussion / Re: Mach 3 turn constant sfm?

« on: December 10, 2010, 03:36:36 PM »

Just for Dave

A table of the old fashioned way of working  

Graham

1093

General Mach Discussion / Re: Mach 3 turn constant sfm?

« on: December 10, 2010, 06:33:31 AM »

Dave,

got an "English" version?

yes I do, I will post it up tonight. Only problem is I think its white on pink 

Graham

1094

General Mach Discussion / Re: Mach 3 turn constant sfm?

« on: December 09, 2010, 02:21:10 PM »

Here is a table to give you some idea of the RPM required for a given CSS and cutting diameter.

The reason for this is that a lot of users do not realise just how fast 200m/min is at small diameters

Graham

1095

General Mach Discussion / Re: g-code stops

« on: December 09, 2010, 03:13:23 AM »

Are you running a step & direction spindle or a constant speed spindle on a on/off relay.

Graham

1096

General Mach Discussion / Re: Coordinate Shift When Thread Milling

« on: December 09, 2010, 03:10:49 AM »

What are the values in the G54 fixture offset?

Graham

1097

General Mach Discussion / Re: Need help to generate a sine wave

« on: December 08, 2010, 07:56:58 AM »

The best way is to write it as VB macro and save it as an M code so you can call it from g-code.

Search the forum there are many examples of creating macros.

Graham

1098

G-Code, CAD, and CAM discussions / Re: Newbie to CNC, please help

« on: December 07, 2010, 10:29:27 AM »

You need to turn off splines in the Corel draw options within the DXF output.

The demo version of lazycam had a g-code limit of 50 lines and mach3 a limit of 500 lines.

Graham

1099

G-Code, CAD, and CAM discussions / Re: Newbie to CNC, please help

« on: December 06, 2010, 09:57:29 AM »

Are you using a licensed version of Mach3?

Turn of splines in corel draw.

Graham
 

1100

General Mach Discussion / Re: Mach 3 turn constant sfm?

« on: December 02, 2010, 04:41:37 PM »

G21 G40 (metric and clear any comp.)
T0101 (select tool 1 offset 1)
G00 X100. Z10. (rapid to start point)
G48 S1000 (set max spindle speed)
G96 S50 M3 (select CSS)
G95 (set to feed/rev)
G01 X10. F.2 (feed to 10mm dia)
X100. (feed back to start point)
G97 S1000 M3 (set to rpm mode)
M30 (all done)

If you watch the speed it should range from 159 to 1591 rpm, this will not happen as the speed is capped at 1000 rpm, the G48 line can be changed to allow maximum if it is safe to do so.

Graham