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General Mach Discussion / Re: gecko540 problem under mach3
« on: October 10, 2011, 02:49:44 PM »I noticed the problem is also in the end mill , if the end mill is a little pushed in COLLET runs to the side , and it also gives the parts is larger 0.06mm on both axesHi Komar,
0.06mm is a fairly small error which can be a result of the machine stiffness / feed / rpm / cutter condition.
Does your program have a roughing pass, then a finishing pass (maybe several finish passes) and then a spring pass?
For an accurate 30.0mm bore I'd normally rough out to within 0.25mm, take 2 finishing passes at 0.125 each and then a following spring pass.
To take into account cutter wear, flex of the machine and tool holder, you'd also need to have cutter compensation to adjust the finished size.
I had a quick look through the old posts of this thread and can't see any details of the material / thickness / type of cutter you are using.
ATB
Derek
ALUMINIUM TOOLING PLATE 3/4 END MILL CARBIDE