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General Mach Discussion / Calculating Tool length + setting hight.

« on: December 08, 2017, 05:35:39 AM »

Hi,

I am Simon, pretty new to this forum and working with my own 4-axis CNC-mill running on mach3 mill.
As i am trying to write a macro to calculate the tool length and setting the Z level for the current tool i am struggeling with some issuess.
The machine needs to touch a gage with a fix point on the spindle, the moves the mill point above the gage and touch again, the difference of these 2 hights +75mm should be the distance from the mill point to the turning axis of my spindle.

In this part i already succeded.

The sad truth is i failed in the most simple part
when the mill point hits the probe it needs to write all the settings and move +10, for this movement i used Code  "G90 Z +10 F5000"

Next thing that happend is the machine that goes down instead of up and destroys my gage.
How is this possible and how can i prevent it of doing this?

Under this post you can find my code.

Thanks for the help
Simon

Code: [Select]

ZCurrent = GetOemDro(802)      'OEM DROs (802)=Z DRO
GageH = GetOEMDRO(1001)        'OEMDRO(1001)= hoogte Probe
ZNew = ZCurrent - 100        'Probe 100mm naar beneden

Dim ZBlock 
Dim ZFrees
Dim Hhoogte

Code "G53 X190 Y190 F5000"          'verplaatsen naar ProbeBlockPositie
While IsMoving ()
Sleep(10)
Wend
Code "F500"           
Code "G31 Z " &ZNew            'Beweging naar Gage
While IsMoving ()
Sleep(10)
Wend


ZBlock =  (GetOemDro(802))    'Hoogte wegschrijven als ZBlock


Code  "G90 Z +70 F5000"        'beweeg naar veilige Hoogte
While IsMoving ()
Sleep(10)
Wend         
Code  "G90 Y +86" 'Beweeg spindel boven Gage
While IsMoving ()
Sleep(10)
Wend
Code "F500"
Code "G31 Z" &ZNew            'Beweging naar Gage
While IsMoving ()
Sleep(10)
Wend
ZFrees =  (GetOemDro(802)) 'hoogte wegschrijven als ZFrees
Hhoogte = ((ZBlock*-1) - (ZFrees*-1) + 75)
Call SetDro (2,GageH)        'DRO(2)=Z DRO
Code  "G90 Z +50 F5000"
MsgBox("H = " & Hhoogte)