Messages

2161

General Mach Discussion / Re: changing offsets and keeping z value?

« on: March 16, 2007, 03:27:24 PM »

It sound as if you should be looking at something like this:-

http://www.coventrytoolholders.co.uk/pdfs/page103.pdf

Graham.

2162

General Mach Discussion / Re: changing offsets and keeping z value?

« on: March 16, 2007, 04:49:16 AM »

You are going about this the wrong way.

In Mach you have 6 global datums and 1 local datum, the global datums are G54,G55,G56,G57,G58 & G59 the local one is G52.

If you have 4 boards to you can set each with its own global datum.

The boards can be in any position on the table and they don,t have to be at the same height  e.g. different vices.

You set your datums for each block at the same point then the code you have will work if you add the G54 or G55 into the code in the correct place.

You set the tool offsets as if you are working on one part.

The code is like this :-

G21 G40 G80 G17


N1 (TOOL 1 ROUGH MILL)
T1 M6
G54 G00 G90 G43 X0 Y0 Z25. S1000 M3
Z1. M8
G52 X10.Y5.
X1.
Y3.
G52 X0 Y0
etc.

G55 X0 Y0 Z25.
Z1 M8
G52 X10.Y5.
X1.
Y3.
G52 X0 Y0
etc.

G56 X0 Y0 Z25.
Z1 M8
G52 X10.Y5.
X1.
Y3.
G52 X0 Y0
etc.

G57 X0 Y0 Z25.
Z1 M8
G52 X10.Y5.
X1.
Y3.
G52 X0 Y0
etc.
G91 G28 Z0 M6
M1


N2 (TOOL 2 FINISH MILL)
T2 M6
G54 G00 G90 G43 X0 Y0 Z25. S1500 M3
Z1. M8
G52 X10.Y5.
X1.
Y3.
G52 X0 Y0
etc.

G55 X0 Y0 Z25.
Z1 M8
G52 X10.Y5.
X1.
Y3.
G52 X0 Y0
etc.

G56 X0 Y0 Z25.
Z1 M8
G52 X10.Y5.
X1.
Y3.
G52 X0 Y0
etc.

G57 X0 Y0 Z25.
Z1 M8
G52 X10.Y5.
X1.
Y3.
G52 X0 Y0
etc.
G91 G28 Z0 M6
M30

Graham.

2163

General Mach Discussion / Re: Problem with the circle

« on: March 15, 2007, 07:47:46 PM »

Are the scaling values set to 1.000?

Are the circles round?

If you mill a 25mm square is it size and square?

Graham.

2164

General Mach Discussion / Re: changing offsets and keeping z value?

« on: March 15, 2007, 07:39:03 PM »

If you are not changing tool, the only way you can do that safely is by having the same z value in both offsets.

What are you trying to do?

Graham.

2165

General Mach Discussion / Re: A very NEWBIE question

« on: March 14, 2007, 05:09:55 AM »

All CAM programs store files in there own format, but most will import/export the standard file types e.g. iges, dxf.

The g-code generated must be formatted to the requirement of the controller (Mach) this is done by the post processor within the CAM software.

The g-code is then loaded into Mach and Mach converts the code into step/direction pulses and on/off signals.

Graham.

2166

General Mach Discussion / Re: Mach 3 and feedrate

« on: March 12, 2007, 04:22:59 AM »

The same test on my setup takes 67 seconds.

Graham.

2167

Modbus / Re: ModIO config setup missing??

« on: March 11, 2007, 01:35:44 PM »

This is where it should be.

Graham.

2168

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

« on: March 11, 2007, 06:08:13 AM »

Hi Andy,

the main and sub program are all in one file, the main program first and all the subs follow on.

The main program starts with a program number e.g. O0001 and ends with an M30

The subs start with a program number e.g. O0002 and end with an M99

To call a sub from the main you enter M98 Pnnnn where nnnn is the subs program number less the 'O' e.g. P0002

The format I gave in option 1 and 2 are the standard layout.

______________________________________________________________________________________________

When you program a component you have absolute and incremental programming.

Absolute is where all the dimensions are from a single point on the work piece.

Incremental is where the next dimension is the distance from where the cutter is now.  it can get very confusing as you have to remember where you are all the time.

You can mix absolute and incremental in the same part if needed.

Most of the time you will use absolute.

You can cut and paste the sample code into mach and the sim will show what it is doing.

Send me a drawing and some details of cutters you have and I will do you a program to try.

Graham.

2169

Modbus / Re: ModIO config setup missing??

« on: March 11, 2007, 04:59:36 AM »

Go to ports & pins and enable modbus control. 

Restart mach3. 

Then from the menu at the top of mach3 select the Functions CFG menu and half way down is the mod io config.

Graham.

2170

General Mach Discussion / MOVED: subroutine

« on: March 10, 2007, 06:17:33 AM »

This topic has been moved to G-Code, CAD, and CAM discussions.

http://www.machsupport.com/forum/index.php?topic=2664.0