SPEED REDUCER - SUMITOMO HEAVY INDUSTRIES

Title:

SPEED REDUCER

Document Type and Number:

Japanese Patent JP2014139483

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a speed reducer which has high processability of a main bearing and, further, can reduce a cost thereof.SOLUTION: A speed reducer 2 includes a casing 16, an internal teeth gear 48, an external teeth gear 44 which is inscribed and mated to the internal teeth gear 48, and a main bearing 18 interposed between the casing 16 and a flange body 12. Therein, a pair of cylindrical roller arrays 60, 61 comprising a plurality of cylindrical rollers 60A, 61A having rotation shafts O2, O3 inclined to an axial line O1 of the internal teeth gear 48 are provided as rolling bodies of the main bearing 18, inner races 64, 66 and outer races 68, 70 which provide rolling surfaces of the cylindrical rollers 60A, 61A are provided, there are not flange parts which restrain the movement of the cylindrical rollers 60A, 61A in the axial direction on the inner races 64, 66 and the outer races 68, 70, the movement of the cylindrical rollers 60A, 61A in the axial direction is restrained by retainers 74, 76, and the retainers 74, 76 are in contact with members besides the main bearing 18.

Inventors:

ISHIKAWA TETSUZO
HAGA TAKU
TAMENAGA ATSUSHI
JOACHIM MARKERT
RAINER KRUMBACHER

Application Number:

JP2014088543A

Publication Date:

July 31, 2014

Filing Date:

April 22, 2014

Export Citation:

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Assignee:

SUMITOMO HEAVY INDUSTRIES
KUKA ROBOTER GMBH

International Classes:

F16H1/32; F16C19/36; F16C33/46; F16C33/58

Domestic Patent References:

JPH0341240A	1991-02-21
JP2006046664A	2006-02-16
JPH05196098A	1993-08-06
JPS49135661U	1974-11-21
JPS49120044A	1974-11-16

Foreign References:

US4923311A

1990-05-08

Attorney, Agent or Firm:

Tsuyoshi Makino
Satoshi Takaya
Keisuke Matsuyama

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