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Brother TC-32B drill cycles

kccadcam

By kccadcam,
in Machining, Tools, Cutting & Probing

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kccadcam Newbie

kccadcam

Posted
Posted

We have a part that is 1/2" polycarb with 9500 holes .026 dia. (100 percent inspected!!!) :lol:

Running on a Brother TC-32B tapping machine.

 

Current code now running: (26 hours of drilling!!!)

N2 T2 M06 ( NO. 71 DRILL)
(MAX - Z.6)
(MIN - Z-.0154)
G00 G17 G90 G54
X.0323 Y-.0122 S14000 M03
G43 H2 Z.6 M494 T1
(DRILL .026 HOLES)
G98 G83 Z-.0154 R.6 Q.017 F22.
X.0382 Y.0994
X-.0994 Y.0382
X-.0382 Y-.0994
X.0994 Y-.0382
X-.1077 Y-.0498
X.1376 Y.0613

 

Pecking air for .100 to top of stock adds something like 4.5 hours to run time!!!!

 

If I change the R to top of stock (.500) then the chips will not come off drill and SNAP..... :rant:

 

Does anybody have experience with reducing peck cycle on a Brother?? The Manual really sucks....

What's the best way to approach this?

I can write long hand code and call subs to get exactly what I want,,

but would like to use Mcam and some post mods to do this.

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kccadcam Newbie

kccadcam

Posted
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Posted

In all seriousness, it's probably MACRO time but I hav eno clue how to write MACRO programs for Mitsubixxxx Controls.

Looks pretty standard,,, variables are all the same as good 'ol Fanuc.....

Spent most of the day learning Brother parameters,, starting to figure this beast out....

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kccadcam Newbie

kccadcam

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Who is complaining about the 4.5 hours?

 

Add up the cost of the drills and the time wasted changing them and re-setting the height offset and it seems pretty clear to me... just run it!

Seriously?? circuit board drills that will usually last at least 2 full parts (19000 holes) at around $12.00 each,,

5 minutes or less to reset tool if part isn't scrap vs. 4.5 hours wasted per part at $100.00 an hour.....

My profit sharing is complaining!!!! :wallbash:

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Reko Rookie

Reko

Posted
Posted

Seriously?? circuit board drills that will usually last at least 2 full parts (19000 holes) at around $12.00 each,,

5 minutes or less to reset tool if part isn't scrap vs. 4.5 hours wasted per part at $100.00 an hour.....

My profit sharing is complaining!!!!

 

Unless this type of job is the shop norm, or someone is willing to do a cost/benefit analysis, I'm correct here, and $450 isn't going to change anyone's retirement plans.

 

Now, if this type of work is the norm, like I said, do a cost/benefit analysis to see if purchasing a custom macro is worth it.

 

If I owned a shop, NO WAY would I allow someone to add time to a job screwing around trying to save 5 hours of cycle-time unless it was decided that there would be a bona fide change in the culture of the process... and the only way you go down that path is with a management controlled process that can verify the savings/benefit to the company's bottom line. That means that the time and money it took to train, implement, and purchase software is included in the job even if it is amortized across several jobs. Most of the time, just keeping the cutter to the part and sticking with the original game-plan is the prudent, money-wise way to go.

 

I have watched way too many operators/programmers screw around trying to save pennies while dollars go flying out the window.

 

THAT is all I meant.

:sofa:

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  • 1 month later...
kccadcam Newbie

kccadcam

Posted
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Posted

Here's a quick little video of our new Brother drilling away.....

 

I wrote a long hand sub to drive it and we are getting 15 holes per minute now...

We have now cut the runtime in half!!!!!!

 

.026 carbide circuit board drill

13000RPM 22IPM thru .500 polycarb

9465 Holes per part

slowing down the feedrate at the top to let the chips blow off (running HP coolant thru special collet cap)

 

 

(MAIN Program)

G00 G17 G90 G54

X.0323 Y-.0122 S13000 M03

G43 H2 Z.6 M494

(DRILL .026 HOLES)

G00 G90 X.0323 Y-.0122

M98 P0333

G00 G90 X.0382 Y.0994

M98 P0333

G00 G90 X-.0994 Y.0382

M98 P0333

G00 G90 X-.0382 Y-.0994

M98 P0333

G00 G90 X.0994 Y-.0382

M98 P0333

G00 G90 X-.1077 Y-.0498

M98 P0333

G00 G90 X.1376 Y.0613

M98 P0333

G00 G90 X-.0613 Y.1376

M98 P0333

G00 G90 X.0613 Y-.1376

M98 P0333.............................

 

 

(SUB Program)

G90 G54 G00 Z.6

G01 Z.5100 F787.

Z.4600 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.4700 F787.

Z.4350 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.4450 F787.

Z.4100 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.4200 F787.

Z.3850 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.3950 F787.

Z.3625 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.3725 F787.

Z.3400 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.3500 F787.

Z.3175 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.3275 F787.

Z.2950 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.3050 F787.

Z.2725 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.2825 F787.

Z.2500 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.2600 F787.

Z.2275 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.2375 F787.

Z.2050 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.2150 F787.

Z.1825 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.1925 F787.

Z.1600 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.1700 F787.

Z.1375 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.1475 F787.

Z.1150 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.1250 F787.

Z.0925 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.1025 F787.

Z.0700 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.0800 F787.

Z.0475 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.0575 F787.

Z.0250 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.0350 F787.

Z.0025 F22.

Z.5000 F787.

Z.6000 F400.

Z.4800 F401.

Z.0125 F787.

Z-.0200 F22.

Z.5000 F787.

Z.6000 F400.

M99

 

 

 

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  • 5 months later...
kccadcam Newbie

kccadcam

Posted
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Why you say really spendy, how spendy are we talkin'? Are you still drilling those same parts?

Yes, It's a whole family of similar parts.

.027 dia. by 20xD around $75.00....

 

We are currently running Kyocera custom ground circuit board drills at around $15.00 each and averaging around 50000 holes per drill.

It's been quite the process of elimination between learning about stress relieving polycarb, coolant flow, and chip formation.

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