Gear cutting

Gear cutting

This topic has 4 replies, 4 voices, and was last updated 8 October 2015 at 15:47 by Anonymous.

Viewing 5 posts - 1 through 5 (of 5 total)

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8 October 2015 at 14:13 #7823
Roger Hulett
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@rogerhulett83124
Technique
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8 October 2015 at 14:13 #207077
Roger Hulett
Participant
@rogerhulett83124
When cutting a spur gear using a horizontal mill,proprietary gear cutter and rotary table indexer,is the correct technique to cut each tooth individualy or to keep going round,increasing the depth of cut on each round ?
8 October 2015 at 14:18 #207078
Thor 🇳🇴
Participant
@thor
Hi Roger,

Unless your gears are very big I would cut each tooth (space) in one go – i.e. full depth in one pass.

Thor
8 October 2015 at 15:30 #207083
Neil Wyatt
Moderator
@neilwyatt
The next ME will carry an article by someone who cuts clock pinions in multiple passes.

I have cut 20DP steel gears using a single point cutter in one pass – my logic is that multiple passes just wear away more of the cutter before you get to the finishing cut!

Each to his own.

Like most things, the best solution for you will depend on your cutter, what you are cutting and very much on your speeds and feed rates.

Neil
8 October 2015 at 15:47 #207086
Anonymous
Posted by Roger Hulett on 08/10/2015 14:13:58:

When cutting a spur gear using a horizontal mill,proprietary gear cutter and rotary table indexer,is the correct technique to cut each tooth individualy or to keep going round,increasing the depth of cut on each round ?

With that sort of setup I'd cut in one pass. Like Neil says, anything else just wears out the cutter, and wastes time. I've cut 5DP gears in cast iron:

And 6DP gears in steel (EN8):

Both done in one pass. The most important factor is feedrate, the cutter needs to cut, not rub.

Andrew
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