The spindle makes a heck of a noise when it hits the water at 15krpm. _________________ Mechanical engineers build weapons, civil engineers build targets
Wed Mar 04, 2015 9:16 am
Nick Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
So Shiny! did you change the design - there seems to be more aluminium where the ring bearings fit? _________________ Australian 2015 Featherweight champion
UK 2016 Gladiator champion
Look at you doing things! Love it, epic use of CnC _________________ <Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls
On a sad note the heavier frame coupled with the denser aluminium, (6061 is 2.7 7075 is 2.81) is making the ring decidedly smaller than I would like.
So mounting teeth is proving difficult without weakening the ring. _________________ Mechanical engineers build weapons, civil engineers build targets
Thu Mar 05, 2015 10:05 pm
Valen Experienced Roboteer
Joined: 07 Jul 2004
Posts: 4436
Location: Sydney
on an unrelated note, now I want to play xwing vs tie fighter _________________ Mechanical engineers build weapons, civil engineers build targets
Fri Mar 06, 2015 8:50 am
Jaemus Experienced Roboteer
Joined: 01 Apr 2009
Posts: 2674
Location: NSW
heh, i just finished playing Tie Fighter Collector's Edition and then X-Wing Alliance
And yeah i see where you were inspired haha _________________ <Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls
Sun Mar 08, 2015 8:43 pm
miles&Jules Experienced Roboteer
Joined: 19 May 2010
Posts: 3973
Location: ipswich QLD
worked out how to embed lower res version of the imgur pics yay
stick an l after the filename, before the extension.
(lower case L)
so hUu97dO.jpg becomes hUu97dOl.jpg
Swarf leak, when the filter fills up the coolant overflows and takes swarf with it. The filter is about 2 litres in size.
inside the mill
weighing the bot chassis with all its bits and pieces to calculate the ring weight
starting to finally get a decent finish on the 4140 bar, lowering the tool to precisely 2.5 smidgens below the centerline on the lathe helped a whole bunch, using a fresh tip on the carbide helped another bunch.
you can see it getting better as I went along (and you can see how many other passes I did to get here lol)
with coolant dripping on it there is no harmonic.
This is going to be a new center shaft and end bell for the wep motor it'll be a 3mm shaft with a 30mm cap on it.
I'm thinking I'll probably grind or sand it to size as the 4140 wants a .7mm depth of cut to get a finish on it, and that is a scary cut on a 3mm shaft to be accurate enough for bearings.
so i'll cut it say .1 oversize then a few light cuts which make it all torn up surface, then sand/grind to finished size. _________________ Mechanical engineers build weapons, civil engineers build targets
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