Messages

931

General Mach Discussion / Re: mach 3 license problem

« on: March 30, 2014, 02:52:10 PM »

delete the Mach3.lic file from the Mach3 directory and start again making sure you don't have 2 installs on that computer, check using the properties of the Mach3 icon on your desktop for its location on your hard drive.

932

Share Your GCode / Re: Treasure Hunt G-Code

« on: March 28, 2014, 06:02:01 PM »

Yep, got it

933

G-Code, CAD, and CAM discussions / Re: Totally lost. New guy needs help

« on: March 13, 2014, 05:50:47 AM »

You will need a large bin for specials (otherwise known as scrap) a small area for displaying perfect examples, over time the sizes of theses can be reversed.

A swear box with a large capacity, useful for replacement tool purchases.

A swivel chair is always good for the long running jobs, plus a copy of popular hobby magazine.

Tea or coffee making machine, again this can be replaced with beer, wine, etc but only as experience allows.

An understanding wife, girlfriend, partner and bank manager are always an advantage.

    

934

G-Code, CAD, and CAM discussions / Re: Call G91 sub from G90 main program?

« on: March 04, 2014, 04:16:46 PM »

You can use subs and absolute code, you just need to use G52 to set the local offset position and then you can use G90 absolute code at the new position

E.g.

%
G00 G90 X0 Y0
M98 P1
G52 X20.
M98 P1
G52 X20. Y-20.
M98 P1
G52 X0 Y-20.
M98 P1
G52 X0 Y0
M30

O1 (SUB)
G00 X0 Y0
G01 Z-1. F100.
X10.
Y-10.
X0
Y0
G00 Z1.
M99
%

935

G-Code, CAD, and CAM discussions / Re: G code issues

« on: March 03, 2014, 01:48:34 PM »

Try it like this :-

O0046

( PROGRAM TO CUT CIRCLE AND BOLT HOLE PATTERN)
( FEB 24 2014)
(G54 X0 Y0 Z0 IS CENTER OF CIRCLE)

G17 G20  G40 G54 G80 G90
T01 M6
G90
G0 X5.75 Y6.875
M3 S500
G43 H1 Z.5
G1 Z-.7 F20
G41 X3.25 D1
G3 X3.25 Y6.875 I2.50 J0
G1 X3.125
G3 X3.125 Y6.875 I2.624 J0
G3 X5.75 Y4.251 R2.624
G0 Z1.0
G1 G40 X0 Y0
M5
T02 M6
G91 G28 Z0
G90
G0 X9.1752 Y6.875
M3 S500
G43 H2 Z.5
G83 Z-.7 R.05 Q.5 F40
X8.172 Y9.297
X5.70 Y10.30
X3.328 Y9.297
X2.3248 Y6.875
X3.328 Y4.453
X5.75 Y3.4498
X8.172 Y4.453
G80 M5
G91 G28 Z0
G90
M30

936

G-Code, CAD, and CAM discussions / Re: Call G91 sub from G90 main program?

« on: March 03, 2014, 01:43:40 PM »

Yes you can use G90 and G91 in any part of the main program, be care full using G91 in subs

937

G-Code, CAD, and CAM discussions / Re: How to repeat a subroutine infinitely?

« on: February 04, 2014, 05:41:00 AM »

If you are going to press cycle start each time just re-run the main program calling the sub(s) as many times as is needed to complete the operation.

938

G-Code, CAD, and CAM discussions / Re: Angle calculations for G-Code?

« on: January 27, 2014, 07:39:11 AM »

If you are working in diameter mode then the code is simply move to start diameter and Z start e.g. X30. Z2., feed in 10mm G01 Z-10. F.1 then form a 10*45 deg chamfer X50. Z-20. this may be a big chamfer to cut in 1 go but that's the code to do it. so for 45 degree chamfer move twice the x for the z e.g. a z move of 2 will need and x move of 4.

G00 X30. Z2. G97 S1000 M3
G01 Z-10. F.1
X50. Z-20.
X52.
G00 Z2.
M30

For a 30 degree chamfer the x and z are the same e.g. x2. z-2. will create a 30 degree chamfer.

939

G-Code, CAD, and CAM discussions / Re: G-Code Skips From Line 88 to M02 Then Back to Line 88

« on: January 18, 2014, 03:23:47 AM »

It runs fine for me here.

940

Tangent Corner / Re: Thread Milling cutters

« on: January 15, 2014, 03:07:25 PM »

It is better to use a single point tool like a lathe threading bar, you can then use the wizards to create the g-code

http://www.shop-apt.co.uk/snr-internal-threading-bars-apt/snr-0010-k11-internal-threading-bar.html

http://www.shop-apt.co.uk/metric-iso-internal-threading-inserts/11nr-150-iso-t300-threading-inserts-internal.html