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Planetary gear device and method for manufacturing internal gear thereof

A technology of planetary gears and manufacturing methods, which is applied to gear transmissions, hoisting devices, transmissions, etc., can solve the problems of high cost and achieve the effect of low cost, low cost and low manufacturing

Active Publication Date: 2019-04-23
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, these processing methods all have the problem of high cost

Method used

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  • Planetary gear device and method for manufacturing internal gear thereof
  • Planetary gear device and method for manufacturing internal gear thereof
  • Planetary gear device and method for manufacturing internal gear thereof

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0023] Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.

[0024] First, refer to figure 1 , the overall configuration of an eccentric oscillating type reduction gear (planetary gear) to which the method for manufacturing an internal gear according to an example of the embodiment of the present invention is applied.

[0025] The input shaft 12 and the motor shaft 14A of the motor 14 of this eccentric oscillating speed reducer G are integrated. A crankshaft 20 having two eccentric portions 18 is coupled to the input shaft 12 via a key 16 .

[0026] The axes O2 and O3 of the eccentric portion 18 are respectively eccentric with respect to the axis O1 of the input shaft 12 . In this example, the eccentric phase difference of the eccentric portion 18 is 180 degrees. Roller bearings 22 are arranged on the outer periphery of the eccentric portion 18 . Two external gears (planetary gears) 24 are swingably...

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PUM

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Abstract

The present invention provides a planetary gear device and a method for manufacturing an internal gear thereof. The internal gear is manufactured at a lower cost in the planetary gear device. The present invention relates to the method for manufacturing the internal gear (30) of an eccentric swinging type reduction gear, namely the planetary gear device (G), the eccentric swinging type reduction gear possesses an external gear, namely a planetary gear (24) and the internal gear (30) meshed with the external gear (24). By the method, a groove, namely a pin groove (34) is formed in the internal gear (30) by sweeping processing.

Description

[0001] This application claims priority based on Japanese Patent Application No. 2013-268009 filed on December 25, 2013 and Japanese Patent Application No. 2014-167926 filed on August 20, 2014, the entire contents of which are incorporated by reference referenced in this manual. technical field [0002] The invention relates to a manufacturing method of a planetary gear device and its internal gear. Background technique [0003] Patent Document 1 discloses an eccentric oscillating type speed reducer (planetary gear device). [0004] This eccentric oscillating type reduction gear includes an internal gear and an external gear (planetary gear) internally contacting the internal gear while oscillating, and outputs relative rotation between the internal gear and the external gear as an output. [0005] The internal gear is configured to have an internal gear main body integrated with a housing, a pin groove formed in the internal gear main body, and a pin member arranged in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H1/32F16H55/17B23D79/04
CPCF16H1/32B23F5/163F16H1/28F16H1/46
Inventor 芳贺卓竹原敬二为永淳石塚正幸
Owner SUMITOMO HEAVY IND LTD