Title:
REDUCTION GEAR FOR INDUSTRIAL ROBOT
Document Type and Number:
Japanese Patent JPS62218087
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent resonance in a motor rotation number range by making a value of a reduction gear ratio of a gear pair device of parallel axes as a front step reduction means a value in which an excitation frequency of an eccentric oscillating type planetary gear does not exceed a natural frequency in the motor rotation number region. SOLUTION: A speed reduction gear 3 is constituted of a front step reduction means 20 which is a gear pair device of parallel axes and a rear step reduction means 21 which is an eccentric oscillating type planetary gear. A reduction gear ratio of the front step reduction means 20 is selected in a range of 1/2-1/5 so that an excitation frequency of the rear step reduction means 21 does not exceed a natural frequency in a motor rotation number range per second. Additionally, a total reduction gear ratio 1/50-1/300 is satisfied by the reduction gear ratio selected in this way and a reduction gear ratio 1/25-1/60 of the rear step reduction means 21.
Inventors:
MATSUMOTO KAZUYUKI
HASHIMOTO MASATAKA
HASHIMOTO MASATAKA
Application Number:
JP6163686A
Publication Date:
September 25, 1987
Filing Date:
March 18, 1986
Export Citation:
Assignee:
TEIJIN SEIKI CO LTD
International Classes:
B25J17/00; B25J17/02; (IPC1-7): B25J17/00
Domestic Patent References:
JPS57121490A | 1982-07-28 | |||
JPS5639341A | 1981-04-15 | |||
JPS59124093U | 1984-08-21 | |||
JPS58211881A | 1983-12-09 | |||
JPS59115189A | 1984-07-03 | |||
JPS607856Y2 | 1985-03-18 | |||
JPS56152594A | 1981-11-26 | |||
JPS59106744A | 1984-06-20 | |||
JPS607856A | 1985-01-16 | |||
JPS618760A | 1986-01-16 |
Foreign References:
US3129611A | 1964-04-21 | |||
GB927684A | 1963-06-06 |
Attorney, Agent or Firm:
Ariga Gunichiro