Gear forming device and gear manufacturing method

Abstract

Provided are a gear forming device and a gear manufacturing method. The gear forming device comprises a base and a plurality of idler wheels. The base comprises a body part defining a space, and a plurality of spacing parts which are arranged in the space at intervals and at equal angles. The space is divided into a plurality of containing grooves and a through groove communicating with the containing grooves through the spacing parts. The idler wheels are arranged in the containing grooves of the base in a pivoted mode correspondingly, and part of the idler wheels extend into the through groove, and thus a mold hole corresponding to the tooth form feature of a gear is defined. A bar can be processed to form the tooth form feature after passing through the mold hole, and a plurality of spur gears are obtained after post-processing is conducted.

Description

technical field [0001] The invention relates to a forming device and a manufacturing method of a gear, in particular to a forming device and a manufacturing method of a net shape of a spur gear. Background technique [0002] Spur gears are the most basic form of gears, and are generally used in various fields for power transmission, deceleration, and steering changes. Traditionally spur gears are manufactured by cutting the material with a milling tool such that the outer surface of the bar is cut with toothed features. However, cutting processing is a subtractive processing method, that is, a whole piece of material will be continuously subtracted during the processing process, resulting in low material yield and waste. In addition, each spur gear has a plurality of teeth, but the above-mentioned processing method must cut each tooth separately, resulting in low production efficiency. [0003] Although there is also a method of directly net-shaping spur gears by forging t...

AI Technical Summary

Problems solved by technology

However, cutting processing is a subtractive processing method, that is, a whole piece of material will be continuously subtracted during the processing process, resulting in low material yield and waste

In addition, each spur gear has a plurality of teeth, but the above-mentioned processing method must cut each tooth separately, resulting in low production efficiency

[0003] Although there is also a method of directly net-shaping spur gears by forging through a mold, the cavity of the mold is limited by the space and forging load, so only one spur gear can be forged at a time. Although the material yield is improved, the production Speed ​​still has room for improvement

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