Gallery, Projects and General > How to's
Making a flywheel
Stilldrillin:
--- Quote from: SPiN Racing on March 23, 2009, 04:18:22 AM ---John I wanted to take a sec to thank you for this posting...
It is very simple when you thing.. Oh rotary table... cut some spokes.. turn some cranks.. easy peasy.
And it is.... Hoever it does require a lot of very clear thought as you so beautifully pointed out.
--- End quote ---
Up to 3 years ago I did this sort of thing (& much more), for a living......
I could still do the job, no problem (probably)..... ::)
BUT I couldn`t possibly explain how to do it, to anyone, using the written word....... :scratch:
Blummin well done john! :clap: :clap:
Thank you. :thumbup:
David.
SPiN Racing:
Yep exactly my poorly written point.. LOL
It sounds easy till you think about the steps and it gets very complex fast. But... masterfully written :clap:
Darren:
Thanks John, that explains a couple of things :doh:
So, if you were to square off the side of a 20mm thick block with the side of the cutter, would you do this full depth?
You are right about getting a feel for things, it's coming slowly, cut less, go slower and don't go to a depth of half dia of cutter :lol:
bogstandard:
Gentlemen,
Many thanks for the very kind and encouraging words.
What takes 10 minutes to physically do, most probably takes an hour to do in words, as most of you that do this sort of posting must realise by now. It cannot be avoided. So if a post is a very long drawn out affair, it doesn't mean the job takes the same sort of time.
I am in the shop today trying to finish it off completely, but if I do get it finished it won't be posted, as usual, until the early hours, or even the next day.
Darren,
As long as you are only removing smallish quantities (say 0.25mm) using an END MILL, you could actually use the whole length of the side flutes, even if it was say a 10mm diameter cutter but with 30mm length flutes. It is when you put deep end cuts on that you get the crappy finish, the cutter can't get rid of the swarf fast enough, so carries it round into the next cut and tries to embed it into the metal face while still trying to do the next cut. Air blowing or flood coolant helps because it cleans the swarf out of the flutes.
It is when end milling that you should really beware of climb milling. I am reluctant to do it even on my size of machine, and try to plan my jobs using standard cuts. Sometimes you have to do it, in which case, reduce the cut amount and slow down the feed, that helps to prevent the cutter trying to bury itself in your job, or yank the job out of the vice, both of which usually destroy both the cutter and the job.
You really need to have anti backlash leadscrews to make it so that the machine can do both types of cuts with no problems.
John
Darren:
Thank you John for your relentless offers of help and advise.
I wanted to make sure I wasn't trying to do something that I shouldn't be doing :bang:
A bit more practice is what I need now :thumbup:
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