Gallery, Projects and General > Project Logs
Miniature coil winder
Doc:
Ok setting up machine to cut gears for the winder.
There are several gears needed all are 48dp need one 16t three 32t one 72t and one 81t. Going to start with the 16t then the 32t after that probably the 72t as my indexer will index even degrees. For the 81t I may set up the machine to make my index strip for me first. Sure wish I would have gotten the A axis when I got my machine. That would have mad things so simple oh well I always said I like a challenge. Haha
Anyway here is a video of setting up machine.
Doc:
Ok cutting the first gear a 16t x 48dp After this I will cut the 32t then the 72t and last will be the 81t. But before I cut the 81t I will set up the machine to create my index strip.
Here is #3
awemawson:
Interesting way of cutting your gears there Doc :thumbup:
I'm trying to get my head round whether the gear is actually being 'generated' as it would be with a normal hob that has a lead to the cutter, and the work piece and hob rotate together. I suspect not :scratch:
Much easier cutter to make though, and you've set me thinking about doing it completely automated with my 4th axis on my CNC mill. The 4th axis cannot be used like a continuously rotating spindle, as you would need for hobbing, but it can easily index tooth by tooth as you were doing manually.
Doc:
I use to cut my gears with a single tooth cutter but after making a hob cutter and cutting them this way I have changed.
I used a spread sheet put together by a member on another board where has posted it. It is a very useful sheet. Gives you all the info for making the hob cutter. I've used this method a couple times now and work's pretty darn good.
awemawson:
I suppose it's akin to a Sunderland Gear Planer in motion, in that you are pushing a rack form through the blank then indexing a tooth. OK the rack is rotating, which makes the cutting action easier
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