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gear unit

A technology of gear device and oscillating gear, which is applied in the direction of gear transmission device, transmission device, friction transmission device, etc., and can solve the problem of increasing the number of parts of the gear device

Active Publication Date: 2016-07-06
NABLESCO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Moreover, since a pair of retaining rings are provided to limit the axial movement of the inner tooth pin, the number of parts of the gear device increases

Method used

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Embodiment Construction

[0018] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0019] The gear device according to the present embodiment is suitable as a reduction gear for rotating parts such as a rotating body of a robot or a wrist joint, or rotating parts of various machine tools. In the following description of the present embodiment, an example in which a gear device is applied to a rotating body such as an arm of a robot will be described.

[0020] Such as figure 1 As shown, the gear device 1 according to this embodiment transmits rotational force between the base 50 and the rotating body 52 at a predetermined reduction ratio, and the base 50 and the rotating body 52 are relatively rotatably connected to each other through the main bearing 51 . That is, the gear unit 1 does not include the main bearing 51 , and the main bearing 51 is provided outside the gear unit 1 between the base 50 and the rotating body 52 . The base 50 is ...

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Abstract

The present invention provides a gear device capable of eliminating problems such as abnormal wear caused by relative misalignment between internally toothed pins and externally toothed gears, and capable of suppressing an increase in the number of parts. The gear device (1) includes an outer cylinder (2), an inner gear pin (3) and a support (4). A plurality of pin grooves (13) extending in the axial direction of the outer cylinder (2) are formed on the inner peripheral surface of the outer cylinder (2), and the inner tooth pins (3) are fitted into the pin grooves (13). The pin groove (13) is formed such that the length of the pin groove (13) is longer than the length of the internal tooth pin (3). The holder (4) includes a pair of pressing members (7) having pressing surfaces (7c). The pressing surface (7c) is configured to restrict the axial movement of the inner tooth pin (3) and the swing gear (6) having the outer teeth (6a).

Description

technical field [0001] The present invention relates to a gear unit having internally toothed pins and externally toothed gears. Background technique [0002] Conventionally, as an eccentric oscillating gear device for driving robot parts and the like as a part constituting a robot, a gear device incorporating a main bearing for supporting an external load applied to a robot part is known. In such a gear device, as described in Patent Document 1, the carrier is rotatably mounted inside a cylindrical housing via a pair of main bearings. A plurality of pin teeth are provided on the inner peripheral surface of the cylindrical housing. The pin tooth is sandwiched between a pair of main bearings arranged in the axial direction, so that its axial movement is restricted. The pin tooth is a pin-shaped part. Pin teeth are provided at equal intervals on the inner peripheral surface of the cylindrical case, thereby constituting an internal gear. The pin teeth are capable of meshing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H1/32
CPCF16H1/32F16H2001/323Y10T74/188F16H19/08
Inventor 加藤真也中村江儿
Owner NABLESCO CORP