Messages

151

General Mach Discussion / Re: Question for Dolphin CAD/CAM users

« on: March 24, 2013, 11:33:33 AM »

Hi DICKEYBIRD,

http://www.youtube.com/watch?v=B7BGajAQwJc

hope that helps.

Alex

152

General Mach Discussion / Re: Incorrect PWM Signal for Spindle

« on: March 23, 2013, 11:29:08 AM »

Hi Chris,
I assume that you have  measured both voltages with the VFD wired to the PMDX-107.

If so,then first test if your Linearity.dat file is corrupted. You can rename it or delete it.
A new Linearity.dat file will be created when you open Mach3 next time.
This file contains a linear " compensation "  curve.

You will find the file in YOUR PROFILE macros  folder. Take care you are in the right PROFILE if you have more then one.


ALEX

153

General Mach Discussion / Re: Angular moves - choose direction?

« on: March 23, 2013, 11:07:59 AM »

Sorry if I interfere,

maybe I am wrong, but I can't see a problem here.

I would do it like this. ( lets say we take the A axis )

calculate the steps per so that you get 1  Rotation of your spur Axis by 360 degrees.
UNCHECK "A axis is angular"  in Gen. Config UNCHECK rotational options.

Now a code like G0 ( or G1 ) A180 should turn your axis 180 degree in one direction
G0 A0 back to old position.

Now IF there is a problem with the rotational axis ( A , B , C ) ( no Probs here )

THEN you can use the  X or Y or Z axis for that, IF you have any as a spare.
Same setup ( steps per unit etc. like A,B,C )

just a thought

Alex

154

General Mach Discussion / Re: fastest way to drill.

« on: March 22, 2013, 04:34:58 PM »

I Agree with TP,   

but you have to use CV ( G64) mode AND all movement must be in G1 mode to get the shortest cycle time.

Here again 12 seconds ( 200 positions )

attachet the test code

Btw. nice looking part.

 

155

General Mach Discussion / Re: fastest way to drill.

« on: March 21, 2013, 12:41:49 PM »

The same example without G91 ( some do not like it )

G21 #1=0
G0 G17 G40 G49 G80 G90
T20 M6
G0 G90 G54 X0. Y0. A0.
S1145 M3
G43 H20 Z.5
G64
G0 X0 Y0 Z0.5 F2000
m98p1l200
M30
%
O1
#1=[#1+0.5]
g1z0
z0.5
x#1
m99
%


 

156

General Mach Discussion / Re: Can you pass a lathe tool change number into a G code subroutine?

« on: March 19, 2013, 06:47:54 PM »

Hi,

BUT you have to always use  numbers of 10 -90  as tool numbers

?

#101=1

T[#101 *100 +#101]   (= T101)

should work. 

Alex

157

General Mach Discussion / Re: how to repeat subroutine without adding it mulitple times in gcode

« on: March 19, 2013, 03:39:07 PM »

ah OK,

I think only the canned  cycles work like that. 

There is a (crazy) way to use the canned cycle for that. 

Swap the Y and Z axis and then code something like this.

g69g17
g68a0b0r11.38
g54 g0 X-31.5849 Z8.3424 y0.35 f10
g18
g81y-0.35r0.35
X-28.1169 Z7.0991
X-27.5498 Z11.8541
X-22.7075 Z8.8004
X-20.8535 Z13.6426
g80
G17
g69
m30
%


The coordinates must be X and Z rather then X and Y.

One thing is probably to ask the people at bobCad for a suitable postprocessor for your needs.


Alex

158

General Mach Discussion / Re: how to repeat subroutine without adding it mulitple times in gcode

« on: March 19, 2013, 12:30:37 PM »

Hi DMF,

code the macro to X an Y Zero positon ( X0 Y0 )

In the main code try this

example

G52 X20 Y0
M98 O1234
G52 X40 Y0
M98 O1234
....
....
when you're done then
G52X0Y0
M30

Alex

159

General Mach Discussion / Re: fastest way to drill.

« on: March 19, 2013, 12:12:29 PM »

Hi all,
nice challenge  

Everything you do in life takes some time also in the g code. Also the speed of light is not infinite.

To keep the processing time as short as possible leave everything away what is not necessary.

In your case it may look something like this


G64
G90 G0 X0 Y0 Z0.5 F2000
g91
m98p1l200
G90
M30
%
O1
g1z-0.5
z0.5
x0.5
m99
%

The system needs at least 13 seconds for the 200 points ( someone less ? )

The settings for this are at least:
Steps per MM = 400
Velocity = 1800
Acceleration = 1500

Regards
Alex

160

Brains Development / Re: Brain for air valve for machine that requires air

« on: March 18, 2013, 08:30:24 PM »

Hi Drew,
please post which outputs do you want to turn the air on, and which output is the air.


Alex