Messages

4341

General Mach Discussion / Re: m03 floating head programing

« on: May 16, 2012, 08:38:25 AM »

What you think the offset should be and what it ends up being can be 2 different things. The way I get teh correct offset is trial by error. Run the routine and have it stop before the M3 and MEASURE the set height IF it is NOT correct change the offset value untill it is correct.

The real question IS will it repeat itself every time ending at the same value ? 

WHile some may tell you too many wait states spoils the pie I have found them required many times over many machines and PCs to keep from breaking things(;-). As a rule I only use as many as it takes to make it run reliably. and not a mili secound longer BUT that may not run on your machine.

I do have a PC here that requires little to NONE on wait states but it is a old slow machine @ 1.2ghz. The faster one 3ghz you never know where the code will blow up.

BUT that is just my story your milage may vary due to local conditions (;-) LOLOLOL

(;-) TP

4342

G-Code, CAD, and CAM discussions / Re: Parameter setting usage with subroutines

« on: May 14, 2012, 06:59:04 PM »

Thanks Andrew ANYTIME there is an example of how things work MANY will benifit from it.

Good Job,

(;-) TP

4343

General Mach Discussion / Re: m03 floating head programing

« on: May 14, 2012, 06:51:18 PM »

WIth a CAM you can modify the POST to insert the Gcode sequence BEFORE each M3.

(;-) TP

4344

General Mach Discussion / Re: G31 command.

« on: May 14, 2012, 06:42:23 PM »

HIYA tweakie,  The G31 ran from Gcode is fairly dependable. I have Gcode ONLY routines that run for many thousands of cycles probing engine cylinder head ports.

The problem is when you MIX CB macro  AND Gcode in the same macro. Most times you have to cripple the macro by adding a LOT of long wait states in attempt to kept the running order in sync. Then it becomes clunky and SLOW to execute. Almost useless at that point.

I do see a problem in the G31 Gcode itself.  It gets confused on the accel / Deaccel  it uses sometimes(;-) and MAY cause an overun sometimes where it COULD break a tip. We found it testing the G31 for the TOM routine in plasma.

Ian probably remembers that one now that I mentioned it.

(;-) TP

(;-) TP

4345

General Mach Discussion / Re: A Power Drawbar Like No Other....

« on: May 14, 2012, 12:02:46 AM »

SOunds like you have it figured out. Please keep us up to date on how it is working.

(;-) TP

4346

General Mach Discussion / Re: feed rate button on program run screen

« on: May 13, 2012, 08:42:00 PM »

IF you have the standard screenset then in the Feedrate control block there are 2 arrows one pointed down with a - in it and the other is pointed up and has a + in it.

Click on either and the FRO will increase/decrease  by 10%   for each press of the arrow.

(;-) TP

4347

G-Code, CAD, and CAM discussions / Re: Parameter setting usage with subroutines

« on: May 13, 2012, 08:00:59 PM »

GEE you could have posted the working CODE as a reference for others. (;-)

Just a thought,

(;-) TP

4348

General Mach Discussion / Re: m03 floating head programing

« on: May 13, 2012, 07:52:47 PM »

What you are seeing is one reason WHY I never recomend using a MACRO over just running Plain Gcode .  The macro WILL depend on the computer running it as to IF it will run acturately (not jumping out of sync and skipping codes).

Normally I would see it on FAST cpu PCs.  

You Code seems correct, You may want to try it this way, adding in a few more wait states. (;-) Also corrected a few GO instead of G0 issues. (;-)

PierceHeight =GetUserDRO(1000)
While IsMoving( )
Sleep(20)
Wend
CutHeight= GetUserDRo(1001)
While IsMoving( )
Sleep(20)
Wend
PierceTime=GetUserDRO(1002)
While IsMoving( )
Sleep(20)
Wend
Zoffset=GetUserDRO(1003)
While IsMoving( )
Sleep(20)
Wend
Code “G28.1Z0”
While IsMoving( )
Sleep(20)
Wend
Code”G92 Z0”          '(set z to 0)
While IsMoving( )
Sleep(20)
Wend
Code”G0 Z”&Zoffset '( Retract to top of material)
While IsMoving( )
Sleep(20)
Wend
Code”G92 Z0”          '(set z to 0)
While IsMoving( )
Sleep(20)
Wend
Code”G0 Z”&PierceHeight
While IsMoving( )
Sleep(20)
Wend
DoSpinCW( )             '(Turn torch on)
While IsMoving( )
Sleep(20)
Wend
Code”G4P”&Pierce Time    ' (Pierce delay)
While IsMoving( )
Sleep(20)
Wend
Code”G0Z” &CutHeight      '(Go to cut height)
While IsMoving( )
Sleep(20)
Wend
End

4349

General Mach Discussion / Re: A Power Drawbar Like No Other....

« on: May 13, 2012, 11:29:21 AM »

HIYA RAY interesting approach but it is not new. The problem was getting enough torque to consitantly tighten the collet and having enough torque to LOOSEN it back up. SOMETIMES it takes more torque to loosen than tighten and THAT is the reason everyone WENT to an impact wrench (air or power) to ensure it got tighten enough AND that it would loosen it back up consistantly.

Even saw one that used the spindle motor to rotate a NUT that tensioned the drawbar. The machine shifted into low range for more torque and A fixed plate dropped down on the nut and held it and then the spindle rotated to loosen it then retighten it. Then shifted back into high range.

Just a thought, (;-) TP

4350

Show"N"Tell ( What you have made with your CNC machine.) / Re: Constructing a Low Profile Tool Height Setter.

« on: May 13, 2012, 11:07:41 AM »

HIYA Tweaks , Have you thought about putting in an overtravel switch so that in cause the G31 goes wacky the OT switch will trip as a Limit and save the machine/tool/probe/part ??

Just a thought, (;-)TP