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Gear cutting by machine and hand

A Bit For A Boat In MALTA

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Mexican jon24/09/2012 19:18:05
34 forum posts
5 photos

A gear I made by machine and hand profiling, not the best pictures. But what do ya think.

img_0596.jpg
img_0599.jpg

Edited By David Clark 1 on 25/09/2012 09:50:12

Stub Mandrel24/09/2012 20:44:07
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4318 forum posts
291 photos
1 articles

If its as small as the grain in the paper suggests, very good, although the teeth may be a little thin.

Neil

Mexican jon24/09/2012 21:31:11
34 forum posts
5 photos
Posted by Stub Mandrel on 24/09/2012 20:44:07:

If its as small as the grain in the paper suggests, very good, although the teeth may be a little thin.

Neil

It is quite small 10mm total depth shank is 8mm and the gear is a fraction over 17mm, I didn't have the correct gear cutter at the timeso i had to improvise!(slitting saw and various files) It's only for the steering on a large scale vintage boat. I tried running it with the damaged gear whilst it was in the lathe it all seems ok and at reasonably high speed. I think this will be 360 degree turn and back at most so can't see a problem. I've now picked up more gear cutters so will make another, but I was just wondering what people thought as it was my first attempted at gear cutting

Regards Mexican Jon

magpie24/09/2012 22:36:52
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508 forum posts
98 photos

Here we go again! Another post half covered by Ad's. Sorry about that rant Jon, the gear looks good

for a hand cut job. I once cut a 2 1/2" ratchet wheel 60 teeth, with a piercing saw and file.

I cut such things on my mill nowadays.

Cheers Derek

Edit.  I tried to make each line short, but first line still too long ( missing word is good)

Edited By magpie on 24/09/2012 22:41:48

Ian S C25/09/2012 14:20:31
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7468 forum posts
230 photos

I'v only cut a couple of gears, both with a fly cutter ground on the bench grinder, to as near as I could get to a similar gear, they worked OK, and proberbly no better or worse than yours, I'd say for what its to be used for, quite adiquate. Ian S C

Stub Mandrel26/09/2012 21:56:43
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4318 forum posts
291 photos
1 articles

For a hand shaped gear, that's a very good result.

In theory you could generate the teeth using multiple passes of a slitting saw... many, many passes!

Neil

Ian S C27/09/2012 13:12:49
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7468 forum posts
230 photos

Or it could be done with an end mill/ slot drill. Ian S C

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