Dwell

[brice]

Does anyone know why my machine is dwelling during a drill cycle when I don't have anything in my posting telling it to dwell? I also checked the parameters in my machines and they look okay too. Any ideas would be greatly appreciated. Thanks

[Guest]

What kind of machine?

 

Can you post a sample of the code where the dwell is occuring?

[Chip-pan]

We need this info to help:

Machine type and name

control type

year of machine and control

Post name and version of MC used

 

That will get us in the ballpark

 

Chip-Pan

[brice]

 

Here is a sample:

 

( .500AIRDRL H71 TOOL - 292 DIA. OFF. - 1 LEN. - 71 DIA. - .5 )

N5340 G0 G90 X#530 Y-#531

N5350 M00 (NEED T292)

N5360 G0 G90 G56 X-8.0536 Y-13.2435 M3 S900

N5370 G1 G91 G43 H71 Z#528 M11 F150.

N5380 / G61

N5390 G90 G99 G83 Z0. R3. Q.35 F150.

N5400 X-11.328 Y-10.5796

N5410 X-13.7622 Y-7.131

N5420 X-15.1758 Y-3.1535

N5430 X-15.4639 Y1.0578

N5440 X-14.605 Y5.1906

N5450 X-12.663 Y8.9386

N5460 X-9.7819 Y12.0235

N5470 X9.7819

N5480 X12.663 Y8.9385

N5490 X14.605 Y5.1906

N5500 X15.4639 Y1.0578

N5510 X15.1758 Y-3.1536

N5520 X13.7622 Y-7.131

N5530 X11.328 Y-10.5796

N5540 X8.0535 Y-13.2435

N5550 G80

N5560 G0 G91 G28 Z0 M92

N5570 G49 G54 G64 M95

[brice]

 

Fanuc controller and the machine is about 20 years old.

[brice]

Heian Router

[Psychomill]

Shot in the dark here...

 

Turn on your block skip if you have one, or delete "/G61". G61 is exact stop mode or position check ... although I wouldn't think it would do it "in cycle"...

 

[Thad]

quote:

---

although I wouldn't think it would do it "in cycle"...

---

Actually, I think one of our mills does this...in cycle. Steel Surgeon could probably confirm it.

 

Thad

[Steel Surgeon]

Use a G64 to cancel the exact stop. Get rid of the G61 and will smooth out.

 

I have stopped programs before the G64 and the following program is jerky until I read a G61.

[Steel Surgeon]

I don't know why your post is putting out a G61.

[Thad]

Steel,

 

Does it do in on the Mits during a drill cycle...dwell at each peck and retract?

 

Thad

[CH]

+1 to Psychomill

 

if its like our Heian routers and your block delete switch is up while running the machine will skip the / lines. if it is down it will read the / lines.

[brice]

I have a /G61 in my post because there are certain times I need an exact stop. For example, when I'm going into a square cutout and I don't want the corner rounded. I put that in my post with a "/" in there so we can use it or not. I was thinking the same as CH that if the block delete switch is up then it would skip over the /G61. I will take it out and try again. I'll let you know what happens.....thanks!

[brice]

NOTHING!! When it gets to the bottom of the hole each time, it is hesitating for a split second before coming back up. We handled this through a macro before to eliminate this hesitation. With the new MasterCam version we now have I didn't want to have to go with Macros. Anyone have anything else I can try?? THANKS!

[brice]

With our Macro for drilling, it looks like he eliminated the use of canned cycles....Not sure at this moment what to do next....

[Psychomill]

So you're saying that the machine is using a custom macro on a G83 call instead of a machine canned cycle? Then check the program call for the G83 and see if it has a dwell built in it.

 

[brice]

This is the way we used to do it..Here is the code we used to use:

 

O6570(6565 T73 DRL 9/16 HLS)G0 G90 G56 X4.7188 Y4.5312 M3S900;

N10 G1 G91 G43 H73 Z#528 F150. M11;

N20 G66 P9050 Z#110 I#108 H#115 F30.;

N30 G0 G90 X4.7188 Y4.5312;

N40 G0 G90 X7.7188 Y4.5312;

N50 G0 G90 X13.7188 Y4.5312;

N60 G0 G90 X16.7188 Y4.5312;

N70 G67;

N80 G0 G91 G28 Z0 S0 M92;

N90 G49 G54 G64 M95;

N100 M99;

[brice]

 

I can also send you the macro too if you want me too.

[Tim Johnson]

quote:

---

We handled this through a macro before to eliminate this hesitation. With the new MasterCam version we now have I didn't want to have to go with Macros.

---

The new MC isn't going to fix your machine control. Did your old MC post put the macro in or did you manually edit the program? If the old post did load it you can run the update post chook (alt-c then UpdatePost.dll). If not you may want to add it.

[brice]

I'm trying to stay away from using too many macros because I don't want to handcuff us on what we can and cannot do. I am using some macros though.

[Guest]

I might be a little late to this party but

you could add this macro functionality using a custom drill cycle. Then at least you wouldn't be limiting capability but actually expanding it.

 

I don't see how a macro limits you at all.

 

JM2C

[brice]

The reason that I said that is because we were using MC Version 6 and the previous programmer basically rewrote the post in C++. That restricted us in what we could and could not do. He would update the post as needed, but I want to make sure we are getting the most out of this program and we don't need a person 24/7 maintaining it. I also agree with you on Macro can be used a lot more then they are. I'm not sure how to use the custom drill cycle. Any input there would be greatly appreciated.

[Guest]

Here's a good thread where I got some good information about setting up a custom cycle.

 

Linky

 

If you want to email me, I 'll see what I can do for helping you get it set up.

[brice]

Why is there so much hesitation in the canned cycle?? Is there a way of eliminating this? Should I be looking at going around the canned cycles all together?

[bstrasser]

A shot in the dark, some of the older controls had subprograms that were just macros to do canned cycles. Any value that was input was the new default until a new value was input. That your control will take a G83 call is probably telling us that it is not setup like this,but have you tried adding a P0. to your G83 line?