The friction conditions in the mesh of worm gear drives have biginfluence on the efficiency of worm gears. Because the frictionconditions of worm gears can’t be determined directly, a specialtest rig (three disk test rig) was built to simulate the contactconditions for discrete points along the contact lines of a wormgear.
The highest values of the local coefficient of friction occurunder poor lubricating conditions with the vector of the rollingspeed in direction of the contact line, normally in the center of aworm gear flank, the lowest coefficients of friction in the area ofthe outlet.
Furtheron the local coefficients of friction strongly depend onthe type of lubricant and material combination and to a minorextent on load, lubricant viscosity and oil temperature. Theinvestigations at the three disk test rig offer a cost savingpossibility to examine the different influences on the coefficientof friction of worm gears.
- Edition:
- 98
- Published:
- 10/01/1998
- Number of Pages:
- 10
- File Size:
- 1 file , 560 KB
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