Thank you all. You've helped me tremendously!
As a result we've contracted the job outside from a gear maker. In the future however I will attempt to cut some gears in hose - those gears that require no accuracy.
Tbuelna - I had to go with a profile shift to avoid heavy tooth undercut in the...
Not sure how to use a "rack shaped" cutter on a 3-axis vertical CNC mill. The gear to be cut was meant to be fixed in a horizontal rotary table (gear axis horizontal along X). The rotary table is fixed to the mill's workable so the only place to attach a cutter to is the spindle.
Can't really...
Thank you Gearcutter. By Single Cutter I did mean what you call a fly-cutter type tool. Our gear cutting tool supplier calls them Single Cutters (may look up: Single Cutter gear cutting tools). It looks like a slitting saw blade but with a gear groove profile instead.
I would not be able to...
Cannot find answers to my dilemma anywhere: can I use a single cutter tool to cut a gear with an X profile shift?
I believe a single cutter would shift the entire involute which is not what the X shift is about. I think in the case of the X shift, it is the Major and Minor that shift while the...
Thank you everyone. I knew I could count on you!
Thanks to you, it is all clear to me now. My main problem was not knowing that I can shift profile of each gear independently. I thought that shifting profile of one gear requires a very speciffic shifting of profile of the other gear.
And no...
Thanks Ibmakem,
I see that you are shifting gear profile in one gear only as oppose to shifting profile in both gears. I did no know that this is acceptable. Will gears mesh correctly? Any major adverse effects?
Thanks again for your help.
Need help in determining spur gear parameters. I believe the manufacturer used correction P but that's over my head (I can analyze gears with correction P-0 only).
Gears come from the valve train of a tiny engine used in a Try-Bilt leaf blower which I am converting to a model plane engine.
So...
I talked to Ikona rep. Their tooth profile may be the answer. I've seen things before that did not deliver on their promises, so I'm going to wait till I can test it. There is however some merits to their claims so I am hopeful it's gonna work.
What concerns me is the efficiency that's somehow...
No I can't use a clutch. It's a special mechanism with components that must be rigidly connected between each other. The only "lose connection" is this backlash.
I'll call Ikona in a moment and will let you know what they say. It could be what I am looking for if it works for larger gear ratios...
Thanks Plasgears. This is very encouraging.
To answer Spurs: yes it is possible too install a spring with sufficient stiffness. The problem always is to install a spring that can produce huge force but has sufficien SOFTENESS. The stiffer the spring the easier it is to design and package it...
Thank you Terry;
Unfortunately I can not use any other gear arrangement but the one I described. This gear arrangement is the main component of a special type of rotary compressor (so called cat and mouse design). It allows acceleration and deceleration of vanes - several times per revolution...
Thanks Terry, you are correct in your assumtions: external involute, side fit, 30deg, the root is flat but should make no difference, and 65.0 mm (2.559") major is needed.
If DP needs to be 23.8237 than may X shift factor calulation should be correct, and X = 0.210 for shifting the 24 DP.
So I...
Thank you Mike,
I dont have room for additional idlers. However, if spring loaded idlers work, that means gears can work with zero backlash. I hope tooth tips don't require special modification. I also hope the efficiency is still fine.
I know of split gears with preloaded spring between halves...
