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Reduction apparatus

A reduction gear, cylindrical roller technology, applied in the direction of transmission, gear transmission, bearing, etc., can solve the problems of high cost, high workability and poor hardness, and achieve the effect of easy assembly, high workability and cost reduction.

Active Publication Date: 2010-07-07
SUMITOMO HEAVY IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As disclosed in Patent Document 1, a main bearing including an inner ring or an outer ring having a "flange" for suppressing axial movement of cylindrical rollers exists. The processability of the ring is very poor due to the high hardness of the raw material, and the problem of high cost is easy

Method used

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Examples

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Embodiment Construction

[0021] Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.

[0022] figure 1 It is a cross-sectional view of a speed reducer of a precision control machine for a robot to which an example of an embodiment of the present invention is applied. figure 2 It is an enlarged view of its main part.

[0023] This deceleration device 2 is used for 2 minutes (2 / 60 degrees) in a device with a higher precision for controlling a manipulator, for example, a clearance of about 15 minutes (15 / 60 degrees) to 2 minutes (2 / 60 degrees). Since it is a precision machine of about 0.3 minutes (0.3 / 60 degrees), the front stage has a reduction mechanism 5 of a parallel shaft gear structure that receives the driving force from the motor 4, and the rear stage has a reduction mechanism 6 of an internal meshing planetary gear structure. This reduction gear 2 is disposed between a first member 8 and a second member 10 of a manipula...

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Abstract

The present invention provides a reduction apparatus capable of obtaining a high working quality of a main bearing and further reducing costs. The reduction apparatus (2) has the first and second main bearings (18, 20) between an output unit (outer housing )(16) and fixing parts (the first and second flange bodies) (12, 14), a couple of cylinder roller arrays (60, 61) that are used as rolling bodies of the first and second main bearings are combined on that back side and consists of a plurality of cylinder rollers (60A, 61A), the plurality of cylinder rollers have rotating axes(O2, O3) that are gradient relative to the axial cord (O1) of the output unit (16), mobile flange parts are not provided in the inner rings (64, 66) and outer rings (68, 70) of the fist and second main bearings for limiting the axial direction of the cylinder rollers, and bearing retainers (74, 76) are used for limiting the moving of the axial direction of the cylinder rollers (60A, 61A).

Description

technical field [0001] This application claims priority based on Japanese Patent Application No. 2009-000686 filed on January 6, 2009. The entire content of this application is used in this specification by reference. [0002] The present invention relates to a reduction gear transmission including a main bearing interposed between an output member and a fixed member. Background technique [0003] Patent Document 1 discloses a reduction gear transmission including a pair of angular contact roller bearings using cylindrical rollers as a main bearing interposed between an output member and a fixed member. This angular contact roller bearing has a dedicated inner ring and outer ring that support the above-mentioned cylindrical rollers. Among them, the inner ring has a "flange part", and the movement of the cylindrical roller in the axial direction is restricted by the "flange part" so that the cylindrical roller does not deviate from the inner ring and the outer ring. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/02F16C19/24F16C19/36F16C33/46F16H1/32
CPCF16H1/32F16C19/36F16C2361/61F16C19/361F16C19/54F16C33/4623F16H2001/323F16C33/34F16C33/583F16H1/28
Inventor 石川哲三芳贺卓为永淳
Owner SUMITOMO HEAVY IND LTD