start peck drilling at Z-2.0 but retract to Z.1

[FP1]

If I drill over a hundred 3/16 dia holes 2 inches deep with G83 and now I come back with a longer drill and want to rapid to Z-1.9 and start pecking every .050 but retract to Z.1 after each peck.

 

1st question - G83 can not do that right?(fanuc control on a Mori vmc) Please correct me if I am wrong on this.

 

2nd question - If G83 won't do it, can I change something to have mastercam output the code long hand. How can I accomplish this? I don't need the exact details right now, just need to have a basic idea of what needs to be done for now.

[Mgrenier]

I have created a custom macro just for that manner and then configured mastercam with a custom canned cycle to call that macro.

[Tim Johnson]

Would you please post the macro? I have some parts that I want to use a 3/32" 30d drill for about 2/3 of the holes depth then finish it with with a taper length.

[3rdstring]

This is what I use for a secondary drilling op.

 

code:

---

:8800(SECONDARY PECK)

(Z=#26 - DEPTH)

(R=#18 - RAPID HEIGHT)

(Q=#17 - PECK AMT)

(F=#9 - FEED RATE)

(I=#4 - INITIAL TOOL DEPTH)

(J=#5 - JUMP HEIGHT)

(K=#6 - PECK CLEARANCE)

(C=#3 - CHIP REMOVAL PLANE)

#1=#4-#17

IF[#26LT#1]GOTO5

#1=#26

N5G0Z#18

G1Z[#4+#18]F30.

N10G1Z#1F#9

G0Z#3

IF[#1LE#26]GOTO90

#2=#1

#1=#2-#17

IF[#26LT#1]GOTO15

#1=#26

N15G0Z[#2+#6]

GOTO10

N90G0Z#5

M99

---

Disclaimer: use at your own risk.

[Tim Johnson]

Thanks Chuck