Messages

2301

G-Code, CAD, and CAM discussions / Re: g92 Proper Use Of with M98, M99 ?

« on: December 24, 2006, 07:45:12 PM »

Hi Chip,

Not sure what you mean by its using the bottom object twice

Graham.

2302

G-Code, CAD, and CAM discussions / Re: g92 Proper Use Of with M98, M99 ?

« on: December 24, 2006, 05:56:07 PM »

Hi Chip,

try it like this.

Graham.

2303

General Mach Discussion / Re: code for feedrate override reset

« on: December 21, 2006, 02:23:39 PM »

You could create yourself a 'M' code macro and put a line in to set the DRO to 100%

Graham.

2304

G-Code, CAD, and CAM discussions / Re: Code preparation

« on: December 21, 2006, 01:54:36 PM »

Hi Malcolm,

As a lover of all things Acorn and a programmer for RiscOS and the BBC for 26 years I hate to say it, but RiscCAD is just not accurate enough for this type of work,  I have spoken to Dave Buck on this subject many times and he is reluctant to do anything about it.

RiscCAD only works to 4 decimal places so its fine for structural and picture drawing but poor at CAM drawing, Oaks PDT is far better as it works to 16 places of decimal.  PDT works fine on a SA-RPC but I have never tried it on an Iyonics, I won't pay Jacks prices.

If you want more detail contact me off forum.

Graham.

2305

Feature Requests / Re: Parametric Programming

« on: December 21, 2006, 04:28:40 AM »

You can do that this way :-

O1000
(MAIN PROGRAM)
G00 X0 Y0 Z0
M98 P1001 L4 (JUMP TO SUB PROG 4 TIMES)
M30

O1001
(SUB PROGRAM)
G01 X100. F1000.
.... Etc
M99

Graham.

2306

General Mach Discussion / Re: roadrunner

« on: December 20, 2006, 07:25:36 PM »

Run the file again and on the Mach 'Program' screen there is a line counter, is it stopping at 1000?

If so its the demo limit.

Graham.

2307

General Mach Discussion / Re: Rotational milling speed?

« on: December 20, 2006, 07:20:55 PM »

Half your problem is your program,  you have a thousand lines where one would do.

Your program moves .0001 in Z for a rotation of 1.1 on the A axis,  you would never see the Z move.

If you are doing 1 rev of the A axis set the Z depth and leave it there until the A is finished,

G00 G90 X0 Y0 Z1.
G01 Z-.6 F5.
A1. F15.
A2.
A3.
A4.
A5.
......Etc
G00 Z1.
M30

Or

G00 G90 X0 Y0 Z1.
G01 Z-.6 F5.
A360. F15.
G00 Z1.
M30

Or are you trying to do something completely different ?

Graham.

2308

General Mach Discussion / Re: Wire gauge

« on: December 20, 2006, 06:58:49 PM »

As long as you know the voltage and the maximum power required you can work out the cable size.

formula :- watts/volts = amps

So 1000/240=4.16 Amps

Or 1000/120=8.33 Amps

16 AWG will take approx 15 Amps
21 AWG will take approx 2.5 Amps

All you need to do is pick a cable of this rating or higher.

The table gives a guide as to the AWG to MM2 conversion

Graham.

2309

G-Code, CAD, and CAM discussions / Re: Problem with G01 G91 A360

« on: December 20, 2006, 06:21:34 PM »

I think you are getting confused with G91 and G90.  Try the code like this:-

G91
G0Z1.0000
G0 X0.0000 Z0.0000
G1 G90 Z0.0000 F1000.00
G1 X11.9288 Z-0.2738 A360
G1 X23.8326 Z-1.0923 A720
G1 X35.6871 Z-2.4492 A1080
G1 X47.4694 Z-4.3334 A1440
M5

Graham.

2310

General Mach Discussion / Re: error messages

« on: December 18, 2006, 04:32:27 AM »

Hi Brian,

is the distance to go a global thing or is there a set of dro just for this.

Graham.