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Reduction gear and robot

A technology of reducer and robot, which is applied in the direction of robots, manipulators, mechanical equipment, etc., can solve the problems of large starting torque, machining error, etc., and achieve the effect of maintaining rigidity deviation

Inactive Publication Date: 2016-11-23
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the processing error of the parts, there is a possibility that the inner pin and the gear hole are too close to each other depending on the location, and the starting torque may increase.

Method used

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  • Reduction gear and robot
  • Reduction gear and robot
  • Reduction gear and robot

Examples

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Embodiment Construction

[0030] Hereinafter, embodiments embodying the present invention will be described with reference to the drawings. In addition, the drawings used are appropriately enlarged or reduced and displayed so that the parts described can be recognized.

[0031] reducer

[0032] figure 1 It is an external view of the speed reducer 2 of this embodiment. As shown in the figure, in the speed reducer 2 of this embodiment, the input shaft 12 is provided on the lower surface side of the cylindrical main body part 10 , and the output shaft 14 is provided on the upper surface side of the main body part 10 .

[0033] figure 2 It is an exploded perspective view showing the internal structure of the speed reducer 2 of this embodiment. As shown in the figure, in the speed reducer 2 of this embodiment, a plurality of gear teeth are formed on the inner circumference (hereinafter, also referred to as the inner peripheral side) of a cylindrical member constituting the outer circumference of the ma...

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PUM

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Abstract

The invention provides a reduction gear capable of high rigidity and high torque and a robot. The reduction gear is a reduction gear including a plurality of the inner pins (30) provided in a gear (20). The inner pin (30) includes a core portion (50) and an outer tube portion (48) mounted on the core portion (50) in an insertion manner, and an elastic modulus of the outer tube portion (48) is less than an elastic modulus of the core portion (50).

Description

technical field [0001] The present invention relates to a reducer and a robot. Background technique [0002] As a planetary gear type speed reduction device, there is known a planetary gear type speed reduction device, which has the same speed reduction mechanism as the cycloid speed reducer, and uses a fixed sun internal gear (external gear) and a planetary gear (internal gear) with involute teeth. ). In this type of reduction gear, a planetary gear with one less tooth than the fixed sun internal gear is rotatably arranged in the fixed sun internal gear, and the planetary gear is eccentrically rotated by high-speed input rotation, thereby obtaining a loose fit. A plurality of pins (inner pins) penetrating and extending the planetary gears rotate integrally in a state where the rotation of the output member is largely decelerated. [0003] Such a speed reducer can realize a large speed reduction ratio with a single stage, so it is used as a speed reduction mechanism for hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/32
CPCF16H1/32F16H2001/325F16H2001/327B25J9/103Y10S901/25
Inventor 片冈祐哉
Owner SEIKO EPSON CORP