Gear profiles (involute and root) generated by power skiving

Engineering Asked on December 30, 2021

@Involutius contributed an article on the equations that describe the root profile of gears which are cut by a trapezoidal-profiled hobbing tool. From that article, I was able to do a slightly different derivation to get accurate curves for the involute as well as the trochoidal root curve, for both normal and profile-shifted gears. Thanks so much, Involutius!

But I have another question regarding gear tooth profiles. The entire discussion of the root curve profile is based on a conventional (and, for that matter, a flat trapezoidal) hobbing gear cutter. I’m interested in somewhat more exotic gear applications, and I wonder if the newer power skiving machines can cut, say, negatively profile-shifted spur pinion without the severe impact to tooth strength.

Simply put, my question is, “Does power skiving have a dramatically different result for root gear profiles than conventional hobbing?”

Tooth bending strength is more dependent on tooth geometry than actual manufacturing processes. You can get customs tools for either hobbing or skiving to achieve whatever root geometry you want although they will be more expensive than off the shelf tools.

Answered by jko on December 30, 2021

Related Questions

Technical term for loose drawers jamming more readily than those with tighter clearance?

1  Asked on July 8, 2021

Precision of a steeper motor and gears vs multiple motors

1  Asked on July 7, 2021 by alejandro-guzman

Does air flow rate of an air pump imply the same rate when using it to pump water via air pressure?

1  Asked on July 7, 2021 by taako

A mechanical system with coupled oscillators and dampers

0  Asked on July 7, 2021

What Causes Asymmetrical Buckling in this structure?

1  Asked on July 6, 2021 by steve-feeds

How to calculate beam impact problem

3  Asked on July 6, 2021 by justin-e

Pressure loss of a shape change of an ar duct, keeping the area the same

1  Asked on July 6, 2021

What does the class 6H represent in a hole?

0  Asked on July 6, 2021

T/R switch IC – HMC784AMS8GE IC does not work properly

1  Asked on July 6, 2021 by thanh-nin-yn-bi

reaction of structure

1  Asked on July 5, 2021 by gx6336

Venturi Duct flow

1  Asked on July 5, 2021 by ranulph-teeee

Constant crosshead speed or constant strain rate for comparing samples of differing thickness?

1  Asked on July 5, 2021

When using an o-ring as a face seal, are the faces flush together?

4  Asked on July 4, 2021 by user30281

Why is the direction of pressure always perpendicular to surface area for fluids?

1  Asked on July 4, 2021

How much an unevenly heated glass plate bows?

1  Asked on July 3, 2021

Is there a way to quantify the amount of radiofrequency interference?

1  Asked on July 2, 2021 by li-jy

Motor sizing for modelling

1  Asked on July 2, 2021 by john-raynes

Solenoid with 3mm stroke and ~1ms response time possible?

0  Asked on July 1, 2021 by norlesh

AutoDesk Inventor Export Dimensions from Design Accelerator Generated Spur Gear

0  Asked on July 1, 2021 by 735tesla

Can Sheet Metal Be Formed With Bends At Weld Joints?

2  Asked on June 30, 2021 by imdumb