Editing MPMaster for Mazak HMC.

[Colin Gilchrist]

On thing to be careful of now is that the 'pretract' post block may be called by both ptlchg$ and ptlchg0$...

 

If this is the case, you might be disabling the M05 when the tool does actually change (this would be bad).

 

Joe, give Jim's suggestion a try and see if it works for you..

 

If not, then there are some ways around it.

 

What I would do if it is a problem, is create some flag variables to track if you are actually changing tools or not...

[Joe788]

Colin and Jim, I'm a little bit unclear as to what specific items I should change in Jim's example?

 

Should I just remove my pretract and pstop blocks, and replace them with the blocks Jim's example?

[iowajim62]

Joe,

Just delete *sm05 in the pretract section so it looks like this. where the comment says (deleted *sm05 jimmy)

 

code:

---

 pretract        #End of tool path, toolchange              

sav_absinc = absinc

absinc = one

sav_coolant = coolant

coolant = zero

#cc_pos is reset in the toolchange here

cc_pos = zero

gcode = zero

pbld, n, sccomp, psub_end_mny, e (deleted *sm05 jimmy)

pbld, n, sgabsinc, sgcode, "G28", "Z0.", scoolant, e

#if lock_codes = 1 & rot_on_x, pbld, n, *sunlock, "(UNLOCK)", e

#pbld, n, "G28", "X0.", "Y0.", protretinc, e

#if lock_codes = 1 & rot_on_x & cuttype = 0, pbld, n, *slock, "(LOCK)", e

if abs(cabs) > 360 & nextop <> 1003,

[

if lock_codes = 1, pbld, n, *sunlock, "(UNLOCK)", e

rotretflg = 1

pbld, n, 'G28', protretinc, e

rotretflg = 0

if lock_codes = 1 & cuttype = 0, pbld, n, *slock, "(LOCK)", e

]

absinc = sav_absinc

coolant = sav_coolant

---

[Joe788]

OK I see. I had actually already deleted that sm05 earlier, in order to get the spindle to M19 on the same line as the Z retract (so it's ready to change as soon as the spindle stops). We got that part of it ironed out by adding the M19 right after the G28 Z0.

 

The problem now, is that it also stops the spindle on the retract moves for B axis positioning. So when I'm running the same drill at B90, B0, and B270, it starts and stops from 18,000rpm 3 times!

 

Is there a way to make it call the pretract block prior to an actual tool change, and have it call a different pretract block that doesn't stop the spindle on all other retracts?