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Thread: Starting a Stent tool grinder.
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29th April 2014, 09:45 AM #1
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Starting a Stent tool grinder.
Around two years ago Michael G sent me these stent casting, he had already machined the dovetails. So last weekend we finally made a start on it, I have machined most of the spindle and used my little atlas shaper for the first time in vein to machine the spindle casting.
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Andre
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29th April 2014, 10:31 AM #2
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29th April 2014, 10:50 AM #3
Hi Andre,
Good to see some progress, but no 40tpi threads
Its interesting to see you get the pattern of diagonal lines in the finish from the shaper too. I guess its the bull gear teeth leaving their mark?
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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29th April 2014, 11:02 PM #4
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Yeah I substituted the 7/16" 40 tpi model engineers for an m12 fine pitch it should work. As for the shaper I don't have any idea
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Andre
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26th January 2015, 11:50 PM #5
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well I pulled the project out of hiatuses, As I have the CVA almost wired up I had a go at cutting the tee slots for the table.They came out okay put I'm not 100% happy but it will do. They are 10 mm tee slots I roughed them out with a nice new 6mm cutter and hacked away with a blunt 10 mm till it was done learnt a lesson in climb vs conventional milling today
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Andre
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27th January 2015, 12:02 AM #6
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Where was the climb milling in the tee slot cutting?
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27th January 2015, 06:33 AM #7
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When cutting the initial slot I climb-milled as that didnt work out too well.
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Andre
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27th January 2015, 08:15 AM #8
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Still cant see where the climb milling comes into it when cutting a slot.
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27th January 2015, 09:03 AM #9
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Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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27th January 2015, 09:16 AM #10
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Well I don't know boys I might have my terms wrong but when I fed the tee slot cutter in it pulled in and shook the table going one direction but not going the other direction so may be the mill.
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Andre
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27th January 2015, 12:10 PM #11
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I would think that there is something either not fitting correctly or your gib may be to loose or you didn't remove backlash.
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27th January 2015, 12:12 PM #12
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27th January 2015, 01:00 PM #13
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Well now you say this Pipeclay it was most likely was me not taking out the backlash as the problems only ensued in the first 1inch or two of cutting. I only thought climb milling as I was traversing in the direction you would go if using an endmill climbmilling. Does the direction of milling make no difference when cutting with both sides of a cutter ?
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Andre
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27th January 2015, 01:33 PM #14
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Makes no difference when cutting a slot as one side would be conventional and the opposite climbing.
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27th January 2015, 01:52 PM #15
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Cheers pipeclay a wealth of knowledge as usual.
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Andre