FundamentalConceptsforGears

Wr radialco

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: P G pinio n and gear. Subscripts “p” (or “P”) and “g”, (or “G”) refer to pinion and gear respectively. o abo ve applies t o any type o f gear set n P d G o fo r spur, helical and bevel gear s, abo ve equat io n can be in ano t her fo rm: , where, d P , d G = n d P G are pitch diameters of pinio n and gear. o abso lut e value sig n allo ws freedo m in cho o sing posit ive o r negat ive d ir ect io ns o Convention: fo r spur and parallel helical gears, d ir ect io ns correspo nd to rig ht hand ru le and are posit ive for CCW rotation. product of driving tooth numbers o Train value e = , the speeds of first and last gears product of driven tooth numbers ( , n ) in a train is related by n L F n L = en F , 6 MECH323 – 2007 o Fo r planetar y t rains: e GEARS____________________________ = n - n A L , where n A is the rotation speed of the arm, in rpm. n - n A F FORCE ANALYSIS OF GEARS Spur Gears: the force between meshing teeth can be deco mposed to two components: tangent ial a...
View Full Document

Ask a homework question - tutors are online