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Precision gear, its gear mechanism and production method of precision gear

A manufacturing method and technology of gear mechanism, applied in the direction of gear mechanism, mechanically driven clock, components with teeth, etc., can solve problems such as operability and easy assembly, achieve defect-free reliability, suppress microscopic loss, The effect of uniform pressure distribution

Inactive Publication Date: 2006-10-11
NAMIKI PRECISION JEWEL CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, because the pin itself is very small, it is not easy to operate and assemble when pressing, and it is a process that requires skilled labor.

Method used

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  • Precision gear, its gear mechanism and production method of precision gear
  • Precision gear, its gear mechanism and production method of precision gear
  • Precision gear, its gear mechanism and production method of precision gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment L

[0072] Examples L and M are examples in which precision gears containing Cu as the main component are formed. In the present invention, the maximum elongation is exhibited, and it is possible to form a precision gear having a tensile strength of 1850 MPa or more exceeding 1500 MPa of conventional materials. In particular, the elongation limit of Example L was very high at 3.9%, and a precision gear with the best damage resistance in the present invention was obtained. As a result, a gear mechanism with extremely high reliability against destructive operation defects can be obtained. Figure 5 This is a side enlarged photograph of the integrated stellar wheel L obtained by a scanning electron microscope. 7 is a sun gear, 8 is a pallet, and 9 is 3 shafts.

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Abstract

The present invention provides a metal precision gear and a gear mechanism, which have high hardness, high strength, high surface smoothness, and processability by using a new material gear that is not found in conventional resin molded gears or tool steel metal gears. Excellent high-precision metal precision gears and gear mechanisms. The gear is composed of vitreous metal alloy composed of Fe, Co, Ni, Cu, Ti, Zr, and Hf, which are mainly composed of iron group elements. A disordered structure with broad peaks and no regularity forms a precision gear with a modulus of 0.2 or less.

Description

technical field [0001] The present invention relates to a small, high-load, long-life precision gear, its gear mechanism, and a method for manufacturing the precision gear. Background technique [0002] Among the precision gears used in precision instruments that require high precision, such as clocks and micro gear transmission motors, metal precision gears with a modulus exceeding 0.2 can be processed by EDM and cutting, pressure processing and rolling. Various methods such as molding are used to manufacture products with excellent characteristics and precision. [0003] However, for metal gears with a modulus of 0.2 or less, it is difficult to apply electric discharge machining, cutting machining, press working, and rolling forming in practical use due to problems such as accuracy and manufacturing costs. Therefore, generally, resin-made precision gears that can easily manufacture complex and minute structures by molding are widely used. [0004] The precision gear made...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/06B22D17/00C22C45/00
CPCB22D17/00C22C45/00F16H55/06G04B13/02B82Y30/00
Inventor 井上明久清水幸春喜多和彦渡边大智石田央竹田英树早乙女康典
Owner NAMIKI PRECISION JEWEL CO LTD
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