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Messages - cnc newbee

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1
General Mach Discussion / will artsoft be at Westec in L.A. next week?
« on: March 25, 2006, 01:03:43 AM »
will artsoft be at Westec in L.A. next week?

2
General Mach Discussion / Re: what does "axis scales ar NZ" mean
« on: March 15, 2006, 01:37:28 AM »
I'll look fo that. thanks.

I have another issue that is annoying with Mach2 but I'll start another thread for that.

jh

3
General Mach Discussion / what does "axis scales ar NZ" mean
« on: March 14, 2006, 07:49:39 PM »
I have an LED stating that "one or more axis scales ar NZ" in MACH2

I can not find anything in the manual about this or the forum? Anyone have a clue?

jh

4
G-Code, CAD, and CAM discussions / Re: tapping head cycle?
« on: March 08, 2006, 11:12:39 AM »
That's for sure.

The material was 1.5"  thick cast aluminum tooling plate. That stuff is soo gummy.  I had to use a deep hole cycle with a .1" peck! tapping took two hours, the drilling took almost 7 hous!

Now that the tooling bed is done and bolted to the mill table I'm on to tackling my first "real job" 50 fuelcaps for my business.

www.eti-fuelcel.com

This time it's 6061-t6 and carbide tools. I might be back soon with some new chalenges I expect. What everyone would qoute as a turning job with heavy second opp's on a mill, I'm doing everything on the mill less two operations.


jh

5
G-Code, CAD, and CAM discussions / Re: tapping head cycle?
« on: March 08, 2006, 12:57:09 AM »
well, all the holes are done! the feed rate matched the tap head perfect.

thanks again for the leg up on sub routines.

jh

6
G-Code, CAD, and CAM discussions / Re: tapping head cycle?
« on: March 07, 2006, 05:45:12 PM »
Thanks Graham,

I dug into the post generator in VisualMill 5 for the Mach2 controler.

under the cycles tab it lists the variables associated with tapping in this case. As such I'm able to deleate the vairables associated with tappnig leaving the x-y move calls. Then I just added the M98 P1000 text

Now when i post using the tap tool, it generates all the x & y's with the M09 P1000 call under each! great, but it still is leaving the G84 call which right now I'm just doing a search and replace in notepad to elliminate this code. I works great.

But, I put the sub routine at the end as suggested just before the M05 and M30 and it works fine until after the last x-y tapped hole is done, then the controller reads the sub as another line and exicutes it one last time in the same/last x-y position. I can't see where to put the sub without it running one last time. Any where else it doesn't work properly with the rest of the code. i thought the sub would not be read unless there was a M98 call?

this is what I have been testing

G20
G0 G17 G40 G49   G90
G61(CONSTANT CONTOUR OFF OR TURN ON W/G64)
(Clockwise tap operation)
M08
T7 M988 M6
G43 0
S+351 M03
G00 Z+.5000
X+4.0000 Y-2.0000
m98 p1000
G00 Z+.5000
X+4.5000 Y-2.0000
m98 p1000
G00 Z+.5000
X+5.0000 Y-2.0000
m98 p1000
G00 Z+.5000
X+5.5000 Y-2.0000
m98 p1000
G00 Z+.5000
X+6.0000 Y-2.0000
m98 p1000
G00 Z+.5000
X+6.5000 Y-2.0000
m98 p1000
G00 Z+.5000


O1000
G01 F14.60 Z-.5
G01 F29.2 Z1.00
G04 P2.0
G00
M99

M05
M30

7
G-Code, CAD, and CAM discussions / Re: tapping head cycle?
« on: March 07, 2006, 02:28:20 PM »
I think so, but,

now the next hurdle is to get the CAM software to write all the sub calls in the right place 390+ times

any clues here?  thanks for the advice so far, I feel I'm about ready to make tapping chips.

jh

8
G-Code, CAD, and CAM discussions / Re: tapping head cycle?
« on: March 07, 2006, 11:56:45 AM »
they are all 10-24's on .5" centers.   31 collums   20 rows

I'm wondering how to get my VisualMill 5 program to insert the P1000 line of code after every x-y move, or which wizard to use I guess?

it looks like the subroutine takes over between x-y moves?

S300 M3                      spindle 300 prm rotate cw
M8                              flood on
G00 G43 H3 Z1.00         rapid move, apply tool offset, tool offset index, +z 1.0" from work
G00 X1.0 Y2.0               rapid move, to x1" and y2"
M98 P1000                   call subroutine P1000
X2                               move to x2" ??? i think
M98 P1000                   call subroutine P1000
X3                               move to x3" ??? i think
M98P1000                    call subroutine P1000
M30                            program end and rewind


O1000                         subroutine name "where should this be text located, at the top or bottom of the main program string "
G01 F40 Z-.5                lineriar interpolation, feedrate 40"per min, to Z -.5" this sends the tap in at a matching thread per rev basicaly
G01 F80 Z1.00               lineriar interpolation, feedrate 80"per min, to Z 1" this sends the tap out at twice thread per rev basicaly to _ __ __                               match  the double reverse gearing speed of the tap head
G04 P1.0                      dwell time of 1 second at the 300 rpm to give the tap head a chance to completely withdraw
G00                             set to rapid travel
M99                            return from subroutine back to main program giving up machine control to main program which begins the next _           _                               move command

does this explain the situation? My minimum rpm is 351 so 351/24=14.625 imp feed rate to match 24tpi, how does this all sound.


jh

9
G-Code, CAD, and CAM discussions / tapping head cycle?
« on: March 07, 2006, 01:56:20 AM »
I have 395 holes to tap, I have a reversing tapping head, the reverse speed is twice as fast as the spindle rpm.

I can very closely match the z feed to the 10-24 pitch tap needed to feed down into the hole, but I need to retract at twice the infeed rate.

All the drilling cycles rapid back. The drag boring cycle will only feed back out at the infeed rate.

Is there an easy way to create a macro or subroutine call I can place in my Mach2 post  proccesor that I use through VisualCam to give me twice the feed rate out over the infeed rate?

Thanks for the insight

jh

10
"Once you have the tool bottom touching zero, press "set to zero" for the Z axis"

I guess you mean in the offsets page? not on the main run program screen

jh

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