Limit drill feed in post - lathe

[CNCGUY]

Hey all,

 

I need to limit the feed rate on drills for a specific machine. Here is what I did in ldrill in the post (modified fanuc).

 

code:

---

 ldrill$          #Canned G81 drill cycle, lathe

pdrlcommonb

if feed > 0.008, feed = 0.008

[

pcan1, pbld, n$, *sg80_f, "G99", prdrlout, pfzout, pffr, strcantext, e$

]

if initht$ > refht$, pbld, n$, sg00, "Z.1", e$

pcom_movea

---

It worked in V9 but wont work in X. Infact, the drill cycle wont even post. Any ideas on what I need to change?

[Guest]

go into your control def >> machine cycles >> lathe drill cycles and check to support canned drill

 

[CNCGUY]

John,

 

Unless Im misunderstanding you, thats not the problem. I want to use canned drill cycles - they are checked. I just need to limit the feed rate on any drill with to high a feed (no more than .008).

[Guest]

quote:

---

the drill cycle wont even post

---

I went based on this above

 

I tried your code and when I enabled canned cycle support your code worked for me as is

[CNCGUY]

John,

 

It works for me too, as long as the feed rate is .008 or less. If its over .008, nothing is posted.

[Guest]

code:

---

G0 T6161

G18

G97 S200 M03

G0 G54 X0. Z.25 M8

G81 G99 R.1 Z.25 F.008

G0 Z.1

M9

G28 U0. V0. W0. M05

T6100

---

works for me

 

 

this is how I have it

 

code:

---

if feed > 0.008, feed = 0.008      

[

pcan1, pbld, n$, *sg80_f, "G99", prdrlout, pfzout, pffr, strcantext, e$

]

if initht$ > refht$, pbld, n$, sg00, "Z.1", e$

pcom_movea

---

[CNCGUY]

Try a canned cycle.

[Guest]

just recheck above, I realized what I did, the feedrate setting in the op is .012

[CNCGUY]

O.K. You have forced me to dig deeper (thats a good thing). It does work for anything over .008 but will not work for .008 or less.

code:

---

N5  (.718 SPADE DRILL - HSS)

G00 G53 X0. Z-30.

G54

G97 S652 M03

T5

G00 X0. Z.1

M09

---

I guess my question now is - How do I get it to post properly if the value is .008 or less?

[Guest]

code:

---

 G0 T6161

G18

G97 S200 M03

G0 G54 X0. Z.25 M8

G81 G99 R.1 Z.25 F.004

G0 Z.1

M9

G28 U0. V0. W0. M05

T6100

---

[CNCGUY]

Man John, youre on it.

 

Now I'm more confused. It works me in V9 and for you X3, but not for me X2. I dont see whats wrong. Any other ideas.

[Guest]

Troy,

 

I just tried it in X2 as well, works OK

[Paul Decelles]

Your logic is no good. You can't use the brackets like that.

 

Use this:

 

code:

---

ldrill$          #Canned G81 drill cycle, lathe

pdrlcommonb

if feed > .008, feed = .008

pcan1, pbld, n$, *sg80_f, "G99", prdrlout, pfzout, pffr, strcantext, e$

if initht$ > refht$, pbld, n$, sg00, "Z.1", e$

pcom_movea

---

[Guest]

Paul,

 

I did see that the brackets didn't need to be there but I tried it both ways and just left his logic, as it it did work.

 

Is there an overiding reason in that the logic shouldn't work?

[CNCGUY]

Removing the brackets didnt make difference. This is the only way I could get it to work.

code:

---

 ldrill$          #Canned G81 drill cycle, lathe

pdrlcommonb

if feed > 0.008, feed = 0.008,

else, feed = feed

pcan1, pbld, n$, *sg80_f, "G99", prdrlout, pfzout, pffr, strcantext, e$

if initht$ > refht$, pbld, n$, sg00, "Z.1", e$

pcom_movea

---

[QAZEWQ]

ldrill$ #Canned G81 drill cycle, lathe pdrlcommonb if feed >= 0.008, feed = 0.008, else, feed = feed pcan1, pbld, n$, *sg80_f, "G99", prdrlout, pfzout, pffr, strcantext, e$ if initht$ > refht$, pbld, n$, sg00, "Z.1", e$ pcom_movea

[QAZEWQ]

Sorry.

if feed >= 0.008

[Jim Evans from CNC Software]

CNCGUY, you still have a logic problem. The comma (,) after the feed = 0.008 is not valid with the else on the next line.

 

code:

---

ldrill$          #Canned G81 drill cycle, lathe

pdrlcommonb

if feed > 0.008, feed = 0.008,

else, feed = feed

pcan1, pbld, n$, *sg80_f, "G99", prdrlout, pfzout, pffr, strcantext, e$

if initht$ > refht$, pbld, n$, sg00, "Z.1", e$

pcom_movea

---

Fix your loigic problem and try again. This time check your error log (.err) and make sure there are NOT any other MP related problems with syntax first.

 

Then start trouble shooting the values, your logic condition and ops being used.