Are you in inches per rev for the feed? If you are then that would be the prob.

On the drilling and tapping side, solid carbide drills 100 sfm .001 per tooth, 30% peck depth. Tapping; Form tapping works the best for Invar. 15/20 sfm coated forming tap.

What I have done in the past is to leave more material, .100 or so on the floor post finish. If you start machining in the center of the pocket ramping to finished depth. Now start spiraling out with a radial engagement of 25% or less. The added material on the pocket floor will support the thin wall as you machine it. No skim cuts allowed, that would defeat the purpose. I hope this helps.

We still use the shear hog on quite a bit of our alum. jobs, works well.

 If you would like to use MMC on both the feature the control frame is referencing and the A datum the correct way to do so is to have a circled 'M' after both the .004 and after the A datum callout. You should have a dia. symbol before the .004 in the feature control frame. This will give you a bonus on the .196 hole of one to one as the feature departs from its maximum material condition (at .197 you would get .002 dia. bonus). The way the additional bonus is gained, in this case, is also one to one as the datum A feature departs from its maximum material condition. The only other thing to consider is that the envelope rule applies so the cylinders are straight within the tolerance zone. So whatever fits in the holes will indeed fit. I hope this helps. 

In G93 (inverse time feed) there must be an F (feedrate) command on every line. The control calculates the length of the axis move and the time specified with the F command on every line. The feedrate is only modal in G94 (feed per minute) or G95 (feed per rev) modes. Hope this helps.

You might want to try using a smaller dia. solid carbide end mill, 1/2" or so. Try running it at 100 to 140 surface feet feeding at about .002 per tooth. a small corner radius up to .015" will keep the corner from breaking down too quickly. Don't go with too large of a radius or heat may build up and cause warping and /or work hardening. We have had good luck with this approach.

We machine a lot of Ti. What I do is drill the hole with .0925 dia. drill (2.35 mm)and tap with YMW ZELX Ti LHS/RHC GH2 tap. Use Emuge tapping fluid while tapping. Blow out the hole to be free of coolant first. Drill HSS Co @ 40-50 SFM, Carbide drill @ 100-120 SFM. .0003/.0006 per tooth chip load. Tap @ 12-15 SFM. You can use a dwell in the G84 rigid tapping cycle by adding a P to the canned cycle, this helps cool the tap before retract. (P1000 = 1sec, P2000 = 2sec, ect.) We get hundreds of holes per tap. Hope this helps, If you go with a thread mill do yourself a favor and use a rough and a finish thread mill. Stay away .001/.002 with the rougher and the finisher will last much longer while most the abuse is taken by the rougher. Have Fun!

Our holders measure .0009" under nominal.

The machinability of this grade is similar to that of Titanium 6Al-4V. TICN coated carbide tools work well. Turning inserts, positive rake inserts in negative rake holders work best. Better to increase DOC than to increase feed for maximum removal rate. For milling solid carbide woks well at about 200 SFM, drilling with solid carbide 100 SFM, cobalt at 45 SFM. Don't try and push a worn out tool this material it will work harden. About 75% of our jobs are Ti, have fun.

Currently as the machine sits, in the older Fanuc side of the control, if you are in edit and type in characters, those characters are automatically entered in the program. Where normally you can cursor down and search, alter, insert, etc. Its now setup so that you have to hit search first, enter characters and then search. Only one Robodrill was like this when we received them a year ago and was changed to the typical format by the installer. I however did not write down the parameter or it did not make it to my notes txt document. Any help would be awesome so I can stop thinking about it and apparently no one changed a thing....

Look for a button called "CHANGE EDITOR" on mine it is next to BG EDIT button. enter edit mode, on the full prog screen then push (OPTR), then the + key. It is on that screen on mine. Hope that helps.

There should be an edit "type" soft key in the menus somewhere. I had the same thing happen to me on our OKK 5-axis mill with Fanuc 31i A5. after the cycle ends I will try and find it and let you know exactly what it is called.

I would like some suggestions for a deep micro trepanning operation we need to do. It looks like a blind weld prep around a hole that is .101 +/- .001 dia. the small dia. of the prep (O.D.) is .141 +/- .001, the large dia. (I. D.) is .200 +/- .001. Here is the kicker, it goes .145 +/- .005 deep. There is a .010 radius on both corners at the bottom of the prep, and the .200 dia. needs a 32 finish or better. The material is Nickel 200. could anyone help me out with some advise on the best way the machine this and the best tools to use. Thanks

I would like some suggestions for a deep micro trepanning operation we need to do. It looks like a blind weld prep around a hole that is .101 +/- .001 dia. the small dia. of the prep (O.D.) is .141 +/- .001, the large dia. (I. D.) is .200 +/- .001. Here is the kicker, it goes .145 +/- .005 deep. There is a .010 radius on both corners at the bottom of the prep, and the .200 dia. needs a 32 finish or better. The material is Nickel 200. could anyone help me out with some advise on the best way the machine this and the best tools to use. Thanks

We have a VM3 and don't have any problems running at high RPM. The coolant is used to cool the head and flows around the casting before coming out of the nozzle. Make sure you have plenty of coolant flowing around the head and it is not being restricted by a valve. If we don't need all the coolant flow on the part we will direct one or two lines off the table with full flow and one on the part. Also make sure your tool holders are balanced, check for tool run out, should be less than .0003 on small tools. We use shrink fit holders and have good luck. Hope this helps.

You may be able to. Most likely it would involve replacement of the spindle. Ask a Cool Jet representative. Is it worth it? It could pay for itself rather quickly in cycle time reduction and increase in tool life. We have TSC on 7 out of ten of our mills and half of our lathes. I wouldn't buy another machine without the TSC option. Hope this is helpful.

I agree that the G8 P1 and G5 P10000 may be useful you may want to try a G61 (exact stop) we have to use it on some of our Fanucs. G64 turns it off.

The Guhring drills are nice for alum., the back of the flutes are lapped for chip ejection. Try not running too fast of a feed rate so the chip is not so thick and does not rub against the inside of the hole and gall. I have had to use a G73 peck cycle in gummy materials with carbide tsc drills in the past. It may help with chip evacuation. Good luck.

I have had good luck with similar parts by having the stock double disc ground to thickness and finish specs. Then try stacking a few on a fixture with clamps and machining the outside shape using a relatively small dia. end mill as to not introduce too much stress into the part, of course use a rough and finish cutter not letting the rougher get too dull. You may be able to use some of the holes to screw down the part also. Best of luck to ya

I would like to purchase some of your holders. Could you e-mail me at [email protected] or message me please?

Thanks, Dale

I would like to purchase some of them, can you e-mail me at [email protected] please

Thank you for your time.

Since you're new to 5-Axis, I would highly, no, check that, HIGHLY recommend spending some time with your machine tool builder/dealer AE. That time will be time WELL spent.

 

G5P10000... if you have this use this on everything except drilling. It is HPCC. On occasion, I've seen some builders require G8P1 be activated prior to G5P10000.

 

G68 is Coordinate Rotation. WAY different from G54.2 Px

 

AFAIK you can't use G54.2 Px and G43.4 at the same time.

Thank you for the info. Check that, instead of G68 I meant G68.1 and G68.2. Do you know anything about these functions and how they may be used in conjunction with G43.4?

thanks

I have a Fanuc 31i-A5 control on a vertical 5-axis machine. We are new to 5-axis and I'm not sure when to use G43.4, G5 P10000, G5.1 Q1 R#, G8 P1. Also we have been using G54.2 P#, RTDFO, and I read in some threads that G68 may be a better option. What are your thoughts? Can I use G54.2 and G43.4 at the same time?