The design and simulation of meshing of a single enveloping worm-gear drive with a localized bearing contact is considered. The bearing contact has a longitudinal direction and two branches of contact path. The purpose of localization is to reduce the sensitivity of the worm-gear drive to misalignment. The author’s approach for localization of bearing contact is based on the proper mismatch of the surfaces of the hob and drive worm. The developed computer program allows the investigation of the influence of misalignment on the shift of the bearing contact and the determination of the transmission errors and the contact ratio. The developed approach has been applied for K type of single-enveloping worm-gear drives and the developed theory is illustrated with a numerical example. [S1050-0472(00)00502-X]

Issue Section:
Technical Papers
Keywords:
design engineering, power transmission, mechanical contact, computer aided engineering
Topics:
Simulation, Worm gears, Design
1.
Buckingham, E., 1963, Analytical Mechanics of Gears, 2nd ed., Dover Publications, Mineola, NY.
2.
Colbourne, J. R., 1993, “Undercutting in Worms and Worm-Gears,” AGMA technical paper 93FTM1.
3.
Litvin, F. L., 1994, Gear Geometry and Applied Theory, Prentice Hall, Englewood Cliffs, NJ.
4.
Litvin
,
F. L.
, and
Kin
,
V.
,
1992
, “
Computerized Simulation of Meshing and Bearing Contact for Single-Enveloping Worm-Gear Drives
,”
ASME J. Mech. Des.
,
114
, pp.
313
–
316
.
5.
Dudley, D. W., 1962, Gear Handbook, The Design, Manufacture, and Application of Gears, McGraw-Hill, New York.
6.
Winter
,
H.
, and
Wilkesmann
,
H.
,
1981
, “
Calculation of Cylindrical Worm Gear Drives of Different Tooth Profile
,”
ASME J. Mech. Des.
,
103
, pp.
73
–
82
.
7.
Colbourne, J. R., 1989, “The Use of Oversize Hobs to Cut Worm Gears,” AGMA technical paper 89FTM8.
8.
Seol
,
I. H.
, and
Litvin
,
F. L.
,
1996
, “
Computerized Design, Generation and Simulation of Meshing and Contact of Modified Involute, Klingelnberg and Flender Type Worm-Gear Drives
,”
ASME J. Mech. Des.
,
118
, pp.
551
–
555
.
9.
Simon
,
V. V.
,
1994
, “
A New Worm Gear Drive with Ground Double Arc Profile
,”
Mechanism and Machine Theory
,
29
, No.
2
, pp.
407
–
414
.
10.
Simon
,
V. V.
,
1998
, “
Characteristics of a New Type of Cylindrical Worm Gear Drive
,”
ASME J. Mech. Des.
,
120
, pp.
139
–
146
.
11.
Fang
,
H. S.
, and
Tsay
,
C. B.
,
1996
, “
Mathematical Model and Bearing Contacts of the ZK-Type Worm Gear Set Cut by Oversize Hob Cutter
,”
Mechanism and Machine Theory
,
31
, No.
3
, pp.
271
–
282
.
12.
Bair
,
B. W.
, and
Tsay
,
C. B.
,
1998
, “
ZK-Type Dual-Lead Worm and Worm-Gear Drives: Contact Teeth, Contact Ratio and Kinematic Errors
,”
ASME J. Mech. Des.
,
120
, pp.
422
–
428
.
13.
Bair
,
B. W.
, and
Tsay
,
C. B.
,
1999
, “
Sensitivity Analysis and Surface-Deviation Minimization of ZK-Type Dual-Lead Worm Gear Drives
,”
ASME J. Mech. Des.
,
121
, pp.
409
–
415
.
14.
Litvin
,
F. L.
, and
Hsiao
,
C. L.
,
1993
, “
Computerized Simulation of Meshing and Contact of Enveloping Gear Tooth Surfaces
,”
Comput. Methods Appl. Mech. Eng.
,
102
, pp.
337
–
366
.
Copyright © 2000
 by ASME
You do not currently have access to this content.