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Author Topic: FEED ADJUST MACH 3 LATHE  (Read 1677 times)

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FEED ADJUST MACH 3 LATHE
« on: June 19, 2018, 03:56:35 PM »
Hi ALL
Spec
MACH 3 version .062
TB6560
WIN XP
PARALLEL PORT
Use spindle feed back in sinc mode  ticked
Closed loop spindle control  ticked
Spindle speed av  ticked

Persistent jog mode  ticked
Feed override persist  ticked

Cannot get feed rate to display during a program run or be able to adjust it with the arrows yet the same settings on the mill work OK.
I have tried different settings but have had no luck.
Other than that everything is working even screw cutting!
Any thoughts
Graham
Re: FEED ADJUST MACH 3 LATHE
« Reply #1 on: June 20, 2018, 01:43:58 AM »
Silly question, but have you clicked the S button so M3 knows the spindle is running?
Re: FEED ADJUST MACH 3 LATHE
« Reply #2 on: June 20, 2018, 04:07:51 AM »
Hi John
All programs start
G95 S600 F.01 M3 G90
and go on from there
MDI input is the same
Is there another way?
Graham
Re: FEED ADJUST MACH 3 LATHE
« Reply #3 on: June 20, 2018, 04:11:51 AM »
Spindle button 3rd to the right of Estop.  You may not need it if using Mach3 to control speed, but when I started doing threading I didn't realise that until you "press" this button Mach3 doesn't think the spindle has started.  Worth a try?
« Last Edit: June 20, 2018, 04:15:52 AM by JohnHaine »
Re: FEED ADJUST MACH 3 LATHE
« Reply #4 on: June 20, 2018, 04:28:13 AM »
Hi John
Will try that when I go into workshop after breakfast.
Graham
Re: FEED ADJUST MACH 3 LATHE
« Reply #5 on: June 20, 2018, 09:17:20 AM »
OK
Start m/c manually by button on vfd
Start prog in auto, speed reads in and displays, feed reads in but does not display
At end of prog speed display 0 feed displays program feed

As above but during prog adjust feed rate
During prog nothing displays on feed rate and no difference in actual cut
At end of prog speed display shows zero and feed displays adjusted feed rate

Next run of prog runs at adjusted feed rate

Is it possible to adjust feed rate during cutting at all?
Graham
Re: FEED ADJUST MACH 3 LATHE
« Reply #6 on: June 20, 2018, 09:21:40 AM »
ps pressing the third button just switches the top speed display on/off
Graham
Re: FEED ADJUST MACH 3 LATHE
« Reply #7 on: June 20, 2018, 09:25:15 AM »
What do you mean by the top speed display?  Isn't that the actual measured speed?  If you toggle the button I think it should show the actual speed or zero (thinking machine is stopped).
Re: FEED ADJUST MACH 3 LATHE
« Reply #8 on: June 20, 2018, 03:38:49 PM »
Hi John
Yes it is the actual measured measure speed that changes from zero to whatever the spindle is rotating at.  The programmed speed does not change (the lower dro)
Graham
Re: FEED ADJUST MACH 3 LATHE
« Reply #9 on: June 24, 2018, 04:50:12 AM »
I ask again
Is it possible to adjust feed rate during cutting at all?
Graham