Definition of the loss factor in the relative space of torsion in gear trains having skewed axes

Imre Levai

doi:10.1117/12.371187

24 November 1999 Definition of the loss factor in the relative space of torsion in gear trains having skewed axes

Imre Levai

Proceedings Volume 3832, Sensors and Controls for Intelligent Machining and Manufacturing Mechatronics; (1999) https://doi.org/10.1117/12.371187
Event: Photonics East '99, 1999, Boston, MA, United States

Abstract

Worm-, hypoid-, spiroid-, toroid- and crown wheel gear drives can be mentioned as gears with offset of axes. It is well known that eh efficiency of gears with offset of axes are less favorable than gears with parallel axes. The reason is the stretch difference between the elements, the gears of the drive, which has an additional effect on the load of carrying bearing. The loss following the friction between tooth-surfaces and the corresponding drive efficiency has discussed theoretically with acceptable accuracy just in case of work gears. The measured values gained in laboratories and factories show quite high spread figures relating them either to one another or to the calculated results as expressed above. That is why it seem to be logical to separate the tribological tests - the results of which we are trying to summon up in the Coulomb factor - from the stretch rate appearing between the tooth surfaces. This stretch-rate depends on the geometrical structure of the space of meshing and can be expressed in loss factor not attached to any dimension. This loss factor can be defined either geometrically or kinematically taking the tangential speed into consideration. Knowing the value of C_v loss factor at any point of the space of meshing can be expressed quite simply.

Citation Download Citation

Imre Levai "Definition of the loss factor in the relative space of torsion in gear trains having skewed axes", Proc. SPIE 3832, Sensors and Controls for Intelligent Machining and Manufacturing Mechatronics, (24 November 1999); https://doi.org/10.1117/12.371187

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