screw gear

Japanese: screw gear(英語表記)screwgear
screw gear

…The worm is usually made of hardened steel and the surface is ground to a finish, while the worm wheel is made of phosphorus bronze or cast iron. (6) Screw gear This refers to a gear consisting of two helical gears, but is used when the shafts are in a misaligned state (Figure 6-j). It is practical because it is easy to manufacture, and the helix angle, shaft angle, center distance, and reduction ratio can be appropriately selected, and the meshing can be maintained accurately even if there is an assembly error. …

*Some of the terminology that mentions "screw gear" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ウォームにはふつうは焼入れ鋼を用い,表面を研削して仕上げ,ウォームホイールにはリン青銅または鋳鉄などが用いられる。(6)ねじ歯車screw gear 二つのはすば歯車からなるが,軸が食い違った状態にあるところに用いられるものをいう(図6‐j)。製作が容易であること,ねじれ角,軸角,軸間距離,減速比を適当に選ぶことができるうえに,組立誤差があってもかみ合いを正確に保てるなどの利点をもっているので,実用的である。…

※「screw gear」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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