On Saturday 20 February 2016 18:46:03 Florian Rist wrote: > Hi Gene > > > Way above my pay grade. :( And still the ends of the cutters are at > > 90 degrees. > > Did you ask a manufacture for a custom ground cutter?
No, I won't trouble somebody like kyocera for a onsie. Yes, they may do it, but they expect to serve a niche market and sell many more than one to get the engineers paid. If I was in the market for 50 of them, I could see it. But very few work for nothing like I am, so I will leave them to make a product they know they can sell. So, I bought a 3 foot bar of 3/8" x 2" steel from TSC, cut 3.75" off one end, located the center of that, and sent a g3 off to carve me a 22mm hole to fit my mandrel. Tomorrow I'll put a SC tool in the vise and trim off the square ends in the mill while spinning in that arbor, then cut a V whose leading edge will have about a 5 degree attack angle, drill a couple holes in the attacking face and in a small bit of A2 so I can bolt it into the cuttout, and cut the hollow I need with a 1/4" SC tool, leaving the facing V open by 2 or 3 degrees so I have a few thou for the wibblies, bolt it to the machined V face in the end of the bar after I tune it up on the waterstone. I can't harden the A2, so I'll likely have to hone it on the powered waterstone a few times by the time I get 36 of them done. Then trim the bottom so they are a uniform length and put a bearing equipt roundover in my router table & do the other end, which is square across the bottom. Doing that before I slice out the back, leaving a uniform thickness in both faces, and run the 1/8" roundover up the sides & across the sides of the top, and these parts should be ready to glue up. > > I had several end mills custom ground to my specifications by Wedco. I > only had to specify the contour shape, in my case cones with different > angels and rounded tips, and the material to be machined. Wedco > designed the exact shape and ground the tool from tungsten carbide. > Dimension were about 8 mm in diameter and 60 mm in length. With some > 50-80 EUR it was less expensive than I expected and took only a few > days. > > Another idea: Maybe there is some tool like the one you need used in > Turbine blade machining. They use all sorts of strange cutters, here's > link to the first PDF Google brought up: > http://www.kyocera.com.sg/products/cuttingtools/wp-content/uploads/201 >5/03/KUA-Turbine_blade-EN.pdf Some interesting stuff, none of which looks usable for this. Thanks for the digging about, I appreciate your time to do it, thank you very much, Florian. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
