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Swing internal gear reducer

A reduction gear, internal meshing technology, applied in the direction of transmission, gear transmission, belt/chain/gear, etc., can solve the problems of noise or vibration, difficult design technology, etc. Noise, vibration, and strength-enhancing effects

Active Publication Date: 2016-04-27
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In this situation, actually, in order to prevent the deterioration of the rotation accuracy caused by the difference of the spring constant (torsion rigidity) according to the circumferential position (phase) of the external gear or to reduce the noise or vibration caused by the oscillating rotation of the external gear during operation , and the method of further adding "elastic deformation control holes" to the external gear is extremely difficult in design technology

Method used

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  • Swing internal gear reducer
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  • Swing internal gear reducer

Examples

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Embodiment Construction

[0020] An example of an embodiment of the present invention will be described in detail below with reference to the drawings.

[0021] figure 1 It is a cross-sectional view showing a configuration example of a distribution-type oscillating internal engagement type reduction gear transmission according to an example of an embodiment of the present invention.

[0022] This reduction gear Go includes first and second external gears 12A and 12B, an internal gear 14 with which the first and second external gears 12A and 12B are internally engaged, and a plurality (three in this example) of eccentric shafts 21. , 22, 23 (only the eccentric shaft 21 is shown). The three eccentric shafts 21, 22, 23 respectively penetrate the first and second external gears 12A and 12B at positions offset from the centers of the first and second external gears 12A and 12B, and are arranged at equal intervals on the same on the circumference. The eccentric body shafts 21, 22, and 23 each include fir...

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Abstract

The rotational speed reduction gear has an external toothed gear and an internal toothed gear (14), with which the external toothed gear is engaged from the inside. Multiple eccentric body shafts have eccentric body for moving the external toothed gear. Two supporting bodies are provided in axial direction on two sides of the external toothed gear. The supporting bodies support eccentric body shafts at both ends in rotary manner, where multiple support pins are provided.

Description

technical field [0001] The invention relates to a oscillating internal engagement type reduction gear. Background technique [0002] Patent Document 1 discloses a oscillating internal gear reduction gear in which an external gear internally meshes with an internal gear while oscillating. Patent Document 1 discloses two types of reduction gears as such reduction gears. [0003] One of these types is called the center crank type. The eccentric body for swinging the external gear is directly provided on the input shaft arranged in the center of the reduction gear, and the external gear passes through the input shaft of the eccentric body shaft arranged in the center. Rotate and swing. [0004] On the other hand, another type is called a distribution type, and there are a plurality of eccentric body shafts equipped with eccentric bodies for swinging the external gear, and each of the plurality of eccentric body shafts penetrates the outer shaft at a position offset from the ax...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H1/32
CPCF16H1/32F16H2001/323
Inventor 石川哲三芳贺卓志津庆刚
Owner SUMITOMO HEAVY IND LTD