Tool Change Problem

[bw]

This has been an ongoing issue for me and I usually solve it by editing the code.  Today I did a drawing and forgot to edit it, and ended up with a crash.

Say tool #1 is 1” long and tool #2 is 2” long.  When it stops to change to #2 tool, Z goes to the safe Z of tool #1.  Once I change the tool and hit start the Z goes way below the safe height of tool #2 and crashes into the part.  I don’t know if it is a setting I changed in Mach or if I need to edit my post processor.

I am attaching the code I used with the hope that someone may see something I don’t.  I have no issue until it gets to the spotting drill tool #75.

Thanks

[Hood]

Do you have the tools height offsets set correctly in the tool table?
Hood

[bw]

Yes I double checked everything and it has been an ongoing problem. 

[angel tech]

are you cancelling the first tool offset before you call the second. G49

[Hood]

Not sure why its going wrong then as you seem to have the G43H75 there. If you MDI
M6T1
G43H1
Then lower tool 1 down to a surface and zero the DRO then MDI
M6T75
G43H75
 and then lower the spot drill down does it go to the same place for its zero?

Hood

[bw]

Hood,
If I enter it with MDI it works fine, however when it is running it does not.  I just tried it several times with the same result.  If I add in a G49 like Angel tech suggested it does fix the problem. 

I am not sure why the post possessor does not add that in.  Is there a way to edit the P.P. to add the G49 in?

[bw]

I figured it out, added the G49 to the P.P. and it is working fine now.

Thanks