Another opinion question.. anyone have much experience with these? They worth using? Many are billed as not being as susceptible to chatter as fixed-helix milling cutters. Has that generally been people's experience?
Do they really allow ramping up the speeds where a tool would otherwise chatter badly?
I use several variable helix endmills on a daily basis such as the Hanita varimill, Guhring series 3113 and 3114, also the YG vpower series and my experience is that i wouldn't use anything else if i didn't have to
I use the fullerton tool harmonicut tools and love them. I try not to use anthing else in steel. They leave an very good surface finsh. I had one run out of a part and through my steel vice jaws at about 75ipm and 1/2 inch deep. It ate almost all the way through my vice jaws on both sides in a circle and did'nt hurt the tool a bit.(oops...)
Judleroy
These mills work very well in 316 stainless. I could not believe the feed, speed and DOC the salesman suggested. It was a nice surprise when it worked like a charm.
I noticed the patent numbers are the same across different companies, must be some cross licensing going on.
Anyone use the Guhring RF50 firex coated variable endmills?
"We can't solve problems by using the same kind of thinking we used when we created them", Albert Einstein Thinking outside the box 24/7........
I use the RF50 Guhring endmills everyday. I mostly use the 3113,and 4114 series endmills and the only difference between them is the LOC. I have found in machining 1018,4140,4130,and 4340 that the guhring endmills work much better than a SGS z-carb, Hanita varimill, YG vpower, and gorilla mills but for 17-4 stainless the z-carb, varimill, and YG endmills do better
Whats yalls thoughts on these? They are USA ground and half the price of a Name Brand Hanita. I know its ebay, but believe it or not, ive gotten ALOT of good stuff off ebay.
http://cgi.ebay.com/1-2-TiALN-VARIAB...item33501e12e2
"We can't solve problems by using the same kind of thinking we used when we created them", Albert Einstein Thinking outside the box 24/7........
You get what you pay for, and that's true for pretty much everything!
Variable Flute End Mills I have been cutting 15-5 Stainless at 34-38 RC using the Hanita variable flute end mills and they work very well. I tried out an OSG corn cob style variable flute end mill and it cut OK but I then was able to get a few .750" & 1.0" corn cob end mills from Hanita. These tools cut really good and the tool life is much better. I was using a regular Hanita Varible flute end mill, .750"
diameter with a .030 R, TF4V0519007B, and I switched it out to their corn cob stlye cutter, TM4M0R25018A, with a .050 R. The corn cob one is used to rough out and then I finish with the .030 R tool where I need this radius. The corn cob style cutter is lasting 4 times longer while also running faster. We put most all of our carbide end mills in shrinkers. I just switched out using a rough cut 3.0" insert cutter and a 3.0" finish 90 degrees insert cutter with a 1.0" Hanita end mill to cut two steps. I run the end mill at 1750 RPM @ 15 ipm with a .250 depth of cut and I run it dry. We were having to rotate the insert tools every 2 or 3 parts. The end mill has cut over 15 parts and is still running.
Over the last 2 weeks i've been test a new Seco endmill part# JS554. These endmills don't go on sale till Aprill1 and they seem to be a great endmill. Im using these on 35-40rc 4130 as a finish tool .010 depth, .010 wide cut. I was using a Hanita varimill getting 12 parts per tool $51 each, then a YG1 getting 20 parts at$34 each, then i switched to the Seco endmill which is $81 and i got 100 parts out of it. So the Seco cost more but cut my part cost down by .89 cents
I would have to say that a variable pitch tool will undoubtedly out preform a tool that has an equal flute spacing. Its all in the design and anytime you can break up the harmonic signature that a tool makes while cutting, it will reduce the possibility of chatter. Of course, just as important is the tool path that you are asking the tool to take - a tool is only as good as the path it has been given. I would suggest Helical Solutions SC Endmills. We have a large selection of 3,4,5,7,8,10,12,14 fluted endmills to take care of your needs at great pricing to satisfy your budget.
Some application examples are....
304 SS with 5 flute variable pitch tool (1/2"x1/2"x1"x3") @ 1144 sfm / 110 ipm / .500 adoc / .063 rdoc
17-4ph with a 5 flute variable pitch tool (1/2"x1/2"x1"x3") @ 780 sfm / 80ipm / .500 adoc / .063 rdoc
Titanium with 5 flute variable pitch tool (1/2"x1/2"x1"x3") @ 400 sfm / 126 ipm / 1.0 adoc / .035 rdoc
Check us out at www.1helical.com
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