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Method for producing simple planetary gear device and simple planetary gear device

A technology for planetary gears and manufacturing methods, which is applied in the manufacture of simple planetary gears and the field of simple planetary gears, can solve problems such as design difficulties, and achieve the effects of fewer parts, stable fixed functions, and small backlash

Active Publication Date: 2008-02-06
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the best eccentric direction cannot be known in advance, (as disclosed in this patent document 2) it is necessary to use bolts or the like to fix the eccentric direction of the bracket pin on the eccentric direction after finding the eccentric direction. Bracket side approach
Therefore, in terms of space and long-term fixed reliability, there is a problem that it is very difficult to design in reality

Method used

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  • Method for producing simple planetary gear device and simple planetary gear device
  • Method for producing simple planetary gear device and simple planetary gear device
  • Method for producing simple planetary gear device and simple planetary gear device

Examples

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Embodiment Construction

[0034] An example of an embodiment of the present invention will be described in detail below with reference to the drawings.

[0035] FIG. 1 shows the main configuration of a simple planetary gear unit series including a simple planetary gear unit according to an embodiment of the present invention. This series has the same configuration in the reduction ratio, transmission capacity, etc., and the user can select a product group with a large backlash (allowing a large backlash) and a product with a small backlash (only a small backlash is allowed). group to select. Concentric carrier pins without eccentricity are used in product groups with large backlash, and eccentric carrier pins that can realize the present invention are used in product groups with small backlash. For the sake of convenience, we first start with the overall structure of a simple planetary gear device.

[0036] The simple planetary gear unit 12 has a sun gear 14 ( 14 s : described later), three planetary...

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Abstract

A method for producing simple planetary gear devices is provided in which minimum backlash is satisfactorily realized and maintained with a fewer number of parts without creating any space-related inconveniences. A dummy carrier pin is used which is provided with a rotation support section whose axis can be moved in the radial direction and can support a planetary gear around the rotation support section such that the planetary gear can rotate. The planetary gear is assembled, then, a sun gear is selected and assembled, and the positions of the dummy carrier pin are fixed. Thereafter, the dummy carrier pin is removed, and a carrier pin to be used in actual power transmission is press-fitted into the carrier at the position determined by the dummy carrier pin.

Description

technical field [0001] The present invention relates to a manufacturing method of a simple planetary gear device and a simple planetary gear device. Background technique [0002] A simple planetary gear device is widely used in various applications. The simple planetary gear device has: a sun gear; a sun gear circumscribed; and an internal gear inscribed by the planet gear. [0003] Backlash is unavoidable in the meshing of the individual gears of a simple planetary gear unit. Reduction of backlash has become a major issue particularly in the fields of control of precision industrial robots and the like. [0004] The most basic method for reducing backlash is to prepare a plurality of gears with slightly different tooth thicknesses in advance, and select the gears that mesh with the smallest backlash at the time of assembly. [0005] However, this method has problems in that a large amount of inventory is required, and the assembly workability is extremely low. This is o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/28F16H55/18F16H57/08F16H57/12
CPCF16H57/082F16H2057/125F16H57/12F16H2057/0227Y10T29/49464F16H1/28
Inventor 石塚正幸
Owner SUMITOMO HEAVY IND LTD
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