NDA's prevent me from posting files to the FTP, but here's what seemed to work the best. Axial and radial step over set to the ball mill radius and trochoidal cutting at full material only. For a 1/4" ball mill, loop radius and spacing both at 0.05". BerTau, For a slot why not just use the pocket toolpath?? I set the depth as deeper than the workpiece and it worked well for me. T_Malena, Where in Solon are you?? I work right on Cochran Rd.

I am looking for help with trochoidal milling parameters. I have looked around on the net and have not found any good results. We are cutting H-13 Rc 45 using 1/4" Turbo-Carb ball mills. The machine is an OKK VP600 with 20000 RPM. When roughing pockets I usually use a Surface Rough Pocket routine with .050" stepover and .050 step down, 12000 RPM and 120 IPM. Just a standard parallel spiral from the inside out has given good results. I would like to try the high speed milling routine with trochoidal milling only in the corners but the cycle times for the cuts are about 50% longer than just a plain parallel spiral. I am using the same stepover and stepdown. I know I need to change these values but I was hoping for a little guidance instead of trial and error. Any help would be greatly appreciated.

Why not contact Mits???? They will prolly be able to help.

quote: What I like is being able to use a point for a row on triangular areas. Yes, but just dont try to project a line on that surface through that point. The results make my face go like this

You could define it as a bull mill and it would get you darn close to your actual cutter geometry. Also it would save you from having to do a custom tool definition.

30 something....

quote: G84.1 Z-.8 J2 R.1 S450 F1/18 While this may look funky, the 2100 control will do the math for you and this should work.

I'm signed up for the Nov. 9 class... but only 'cause there's gonna be free food

In MCU: Options-->Program Setup-->Partners. Then uncheck 'Add Automatic Tool and Stock Definitions to G-code' HTH

quote: You know we just might be building the next generation trans-universal spacecraft here and using guitars as a cover. Oh Man!!!! What a coincidence. We ARE building the next generation trans-universal spacecraft HERE. And it is all a cover to really make guitars!!!!!! HA HA HA!!!!! I love it when a plan comes together

Here's a good site about chemical milling

I would say it looks like that guy needs a hobby but it seems that he already has one

yuck, yuck, YUCK!!!!!!!!

We setup parts and press cycle start before going home, but these are long programs (4-8 hrs)and a lot of repeat jobs. It is fun to make $$$$$$ when at home and relaxing

Machinery's Handbook 24 page 616 has a great chart with info on LN1 fits. If you have another edition just look up: Fits, cylindrical in the index

When you chain your across contour, try to chain around the entire contour and not just a single section at a time. Or, put it up on the FTP to give people a better look.

There may be a parameter in the mill that will allow for both kinds of rapid moves. We have this on our OKK. If you can't modify the verify you may be a le to change the mill.

Smit, I looked all over for taper mills w/ 0.01 dia about a month back. Had no luck and ended up having to have customs made. $12.00 each with TiAlN.

How does any emulsifier know "this is what the emulsifier like to see"?? I can understand that at first the mixing ratio may appear to be off by doing it one way as opposed to another. Either way you mix this stuff up it is going to go through a coolant pump where the fluid shear forces are unbelieveably high in order to get the pressure in the coolant system high enough to be effective. It should emulsify just fine after one pass through the system. We have one of those drumtop mixers and it works really well. I think it adds the coolant to the water stream.

In Ohio the state is involved in this. There is an obscure state office in Youngstown Ohio that everything goes through. Maybe PA is similar . NTMA may be able to help you get the info you need. Just a thought.....

No dice on the movie from here but I will go out and look online and post a link when I find something similar.

I think the theory of these is the big radius on the bottom of the tool. What you end up with is a chip thinning condition just like a shallow radial DOC with an end mill where you can pump up the feed rate because the chip gets so thin. In this case the radius on the bottom of the tool is like 30 in. or something huge like that. So what happens is the chip gets so thin that the feedrate can go through the roof. Very impressive and kinda scary to see run.

James, See Here Seco claims chip loads on the order of 3mm per tooth or about .125 IPT in steel at .04 DOC. Greg, Who made this claim and on what basis was it substaintiated?? I would ask your machine tool builder. We use these with great sucess in 45 Rc H-13. We run 750 RPM and .04 DOC at 75 IPM full engagement with a 2.5" dia mill and it cuts like butta. We tested up to 150 IPM with sucess but brought the feed back down because of interrupted cuts. These things are great but when they fail it is catastrophic and reeeeeeeeal ugly . If its true that it is bad for ceramic bearing machines there will be a grown man crying in this office today.

Take care over there brother, and thank you for your service. Here's a few cold ones comin' at ya

I'm here. Waaaaaaaay in the back