MadModder
Gallery, Projects and General => Project Logs => Topic started by: stefang on March 31, 2012, 06:25:48 PM
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Hi folks
A sinebar to set angles accurately was on my list for a long time...so I built one :dremel:
Thats the plan:
(http://gtwr.de/sinebar/sinuslineal1.jpg)
First step was the body, it was machined from cold rolled steel, which was a bad decission, because its prone to warp when machined.
Here the material for the body is shaped to size:
(http://gtwr.de/sinebar/2012-02-15_18-29-00_566.jpg)
Thats how it looks after a bit of milling. And there is the problem, due to the milling, the bottom surface warped 0,07mm concave. Not a big deal, it can be easiely corrected on the shaper, but still annoying.
(http://gtwr.de/sinebar/2012-02-15_21-20-20_92.jpg)
Shaping the material for the sinebar itself, this time its hot rolled steel, as it is pretty stressfree. Note the fine finish, the shaper produces :thumbup:
(http://gtwr.de/sinebar/IMG_0030.jpg)
Drilling and reaming two holes, exactly 65mm apart:
(http://gtwr.de/sinebar/IMG_0031.jpg)
Thats the fixture to machine the sinebar, a piece of aluminum with two M6 Threads, 65mm apart:
(http://gtwr.de/sinebar/IMG_0033.jpg)
Machining the contour. The screw on the left was a bit in the way of the milling cutter... :palm:
But no problem, it held the part still secure in place.
(http://gtwr.de/sinebar/IMG_0039.jpg)
Turned a bolt that acts as a pivot, and the roll which will sit on the gauge blocks. Its turned from tool steel, hardened, ground and finaly broken of the remaining material.
(http://gtwr.de/sinebar/IMG_0040.jpg)
Finishing the surface, where the gauge blocks will go:
(http://gtwr.de/sinebar/IMG_0041.jpg)
Short video of the machining:
not very much clearance ;)
Test fit with a 1mm gauge block (equals a settign of 0°):
(http://gtwr.de/sinebar/IMG_0045.jpg)
Testing on the surface plate with the 1/1000 dial indicator:
(http://gtwr.de/sinebar/IMG_0046.jpg)
I machined a Tumbscrew for the lock of the sinebar and heat-blackened it.
(http://gtwr.de/sinebar/IMG_0057.jpg)
Also made a fence to align it on straight edges:
(http://gtwr.de/sinebar/IMG_0065.jpg)
Then i made a small block with a dovetail...
(http://gtwr.de/sinebar/IMG_0072.jpg)
And a bar with a slot..strange stuff
(http://gtwr.de/sinebar/IMG_0073.jpg)
Then I cut a dovetail on the bar:
(http://gtwr.de/sinebar/IMG_0074.jpg)
And thats how the bar, clamping block and sinebar go together. Makes adjusting the compound slide pretty easy :D
(http://gtwr.de/sinebar/IMG_0085.jpg)
And finaly a video of the achived precission, the indicator is a 1/1000mm type:
Thats all for today :)
Regards,
Stefan
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Hi
Very nice Stephan and very well presented. That is a tool that you can be proud of. :D :D
Cheers :beer:
Don
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Nice job. Like Don said... very nice presentation!
Eric
:nrocks: :nrocks:
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:clap: :clap: :clap: :clap: Thanks for sharing your sinebar Stefan :thumbup:
I see your making good use of your shaper :med: :)
Rob
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Stefan
Very nicely made :thumbup: :clap:
Well shown and photographed :thumbup: :clap:
:beer:
DaveH
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Stefan
Very nice
Good clear post :thumbup: :thumbup: :thumbup: :thumbup: :thumbup:
I need a shaper
John
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Thank you guys :)
All I need to do, is make a nice wooden case for it...
I need a shaper
Every household needs a shaper :D
Regards,
Stefan
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Fab as all the other posts and project you presented.
And do I hear a bit of good old heavy metal in the background? :headbang:
Hope to see a lot more posts in the near future from you.
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Very nicely done Stefan :thumbup:
There's one in my future too, but unfortunately not a shaper; I can only dream of that...
:beer:, Arnold
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And do I hear a bit of good old heavy metal in the background?
Nothing else in my shop :headbang:
:D
No problem to do it without a shaper, only with a mill..or only with a lathe. But you loose the meditative movement of the shaper-
Regards
Stefan