Messages

3131

General Mach Discussion / Re: Torch Height Control Process

« on: February 17, 2013, 02:59:45 PM »

YOU did install the driver for the 2nd LPT card correct??? 

(;-) TP

3132

G-Code, CAD, and CAM discussions / Re: Mach3 adding extra loops in a string of arcs

« on: February 17, 2013, 01:55:11 PM »

Ian, not a problem I understand(;-)  I have tried for hours now trying to see "IF" I could get it to run correctly(taken as a challenge). The easy way was to reverse the direction of cut(;-)

There were also several other FINE detailed glitches I did not show(;-)

I am still trying different approaches to that contour but I don't expect any other outcome. But being hard headed I carry on testing and throwing rocks at it.(;-)

About like trying to get TC to work with SUB programing a LOST cause.

(;-) TP

3133

General Mach Discussion / Re: Wiring and parameter for Tamagawa driver with mach3

« on: February 17, 2013, 01:31:35 PM »

What you have does not define what all the parameter settings are, it just gives the ones for THAT machine.

(;-) TP

3134

G-Code, CAD, and CAM discussions / Re: Mach3 adding extra loops in a string of arcs

« on: February 17, 2013, 01:18:03 PM »

HIYA Ian , Yes I saw the glitches in the DXF but the cam stiched it back together as a contour.

Your code STILL produced glitches in the offset toolpath.(;-)  Notice that the TC path crosses back over the original path to the INSIDE and then crosses back over again to get to the outside.

I can change the code all around and get different reactions from the TC but never does it make it perfect on THIS example. Another different DXF example MAY run just fine.


(;-) TP

3135

General Mach Discussion / Re: Need help with torch on output please and pci card

« on: February 17, 2013, 12:20:28 PM »

A simple voltmeter will allow you to see the change in voltage at the connector or cable end or BOB or terminal strip on drives.

(;-)TP

3136

General Mach Discussion / Re: Need help with torch on output please and pci card

« on: February 17, 2013, 11:16:29 AM »

No surprise there, the software side is doing its job. If the config for the output is wrong(port/pin) then you will not activate the relay.Or your problem is a hardware problem downstream from Mach3.  cable BOB wiring

(;-)TP

3137

G-Code, CAD, and CAM discussions / Re: Mach3 adding extra loops in a string of arcs

« on: February 17, 2013, 11:03:36 AM »

HIYA Tweaky, In the general scheme of things I agree that most can use the Standard CAM offsetting. BUT in the Part machining world where precision is required then TOOL COMP is preferred. You need to be able to adjust the TC to make the part to precise dimensions.

With Cam comped code you have no choice on precision you get what you get and there is no way to adjust the final dimension OTHER than RECAMing the part again and possibly having to cut a new part .

In the ART world "Cam" is king(;-)

Just a thought, (;-) TP

3138

G-Code, CAD, and CAM discussions / Re: Mach3 adding extra loops in a string of arcs

« on: February 17, 2013, 10:56:54 AM »

IAN, overlaped the contour line was NOT the correct explantion. THe lines CROSSED over the contour line and stopped on the far side of the line. The Cam saw it as a seperate entity not as a leadin/out

3139

General Mach Discussion / Re: Need help with torch on output please and pci card

« on: February 17, 2013, 10:43:18 AM »

SOunds like you do not have mach3 configured properly to see the port or configured properly to USE the ports PINS.

(;-) TP

3140

General Mach Discussion / Re: Torch Height Control Process

« on: February 17, 2013, 10:38:42 AM »

1. The arc ok just lets MAch3 that the arc is established and it is ok to start moving.

2. The ones that need a CT do NOT have access to the arc voltage so you use a CT to establish the arc voltage.

3. THE machines that ONLY have raw voltage requires a THC that DOES have  a voltage divider for step down voltage. Raw voltage would DESTROY a unit without a stepdown builtin.

4. The voltage divider simply steps DOWN the voltage level so the electronics wil not be destroyed by the high voltage from the plasma unit.

5. THE op HAS to understand the relationship of Set voltage VS feedrate to maintain the proper HEIGHT.  THE HEIGHT is the most important feature for proper cutting. Most manf give you the proper height to pierce and cut at. It is the OPS jog to maintain that height properly. You may need to go higher or lower on the arc voltage to maintain that relationship.

6. SEE #5 above AND you must know HOW the control software works to start and restart a cut.  A working knowledge of G code would be very helpfull.

7. NO difference IF everything works as it should and conditions are repeatable and the slag on top of the matr=erial is NOT a problem for the mechanical unit.

Hope that helps, (;-) TP