Rotational projection - Rotational projection

Japanese: 回転投影図 - かいてんとうえいず
Rotational projection - Rotational projection

...(4) Local projection drawing When it is sufficient to show the shape of only one part of an item, such as a hole or groove, show only that necessary part as a local projection drawing. (5) Rotated projection drawing When an item has an arm extending from a boss at an angle, it is best to rotate that part into a straight line and show its actual shape (Figure 3-d). (6) Exploded view When an item is made by bending a plate, it is best to show the shape before bending as an exploded view. ...

*Some of the terminology explanations that refer to "rotational projection drawings" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…(4)局部投影図 品物の穴,みぞなど,一局部だけの形を図示すれば足りる場合には,その必要な部分だけを局部投影図として表す。(5)回転投影図 ボスからある角度で腕が出ているような品物の場合には,その部分を一直線上まで回転して,その実形を図示するのがよい(図3-d)。(6)展開図 板を曲げてつくるような品物の場合には,曲げ加工を行う前の形状を展開図として図示しておくのがよい。…

※「回転投影図」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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