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2024年3月25日发(作者:分页控件是什么)

现在一般国内机械制图采用第几视角?

国家标准是第一角投影。你现在接凑到的那些第三角投影的图纸,

都是国外的图纸。看图时要注意,第一角投影是人→物→图的

投影关系;而第三角投影是人→图→物的关系。

National standard is the first angle projection.

You are now connected to those triangular projection

drawings, are foreign drawings. Attention to the picture,

the first angle projection is a projection relationship

between people, things, and the relation graph;

triangle projection is to chart,.

第三视角一般是因为源图纸来源为日本美国等地。

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采用第一视角。第三角视图指的是以「视点(观察者)」→

「投影面」→「物体」关系而投影视图的画法;

简单的,就从放置位置上看,与第一视角不同:第一角视图:左视图放右边,右视图

放左边,俯视图放下面,仰视图放上边。 第三角视图:左视图放左边,右视图放右边,

俯视图放上面,仰视图放下边。GB是第一视角画法。使用第一角投影的国家有---- 中国

德国 法国 前苏联使用第三角投影的国家有----- 美国 英国 日本 GB和ISO标准一般用第

一视角法,日本,台湾等习惯用第三角法。第三角法俯视图放在主视图上,左视图放在主

视图左边,依次类推,与第一角法刚好相反,所以一开始会不大习惯。

现在与国际接轨多了,所以第三视角图就多了,以前都有图纸转

换的,现在省略了。多熟悉一下,习惯就好了。

Adopt the first angle of view. The triangular view refers to the drawing of the

projection view with the relation of 'viewpoint (observer)', 'projection surface' and

'object';

Simple, from the placement point of view, different from the first view:

First angle view: left view on right, right view left, top view below, top view on

top.

Triangle view: left view left, right view on the right, top view on top, bottom

view down.

GB is the first visual angle painting.

Countries using the first angle projection ---- China, Germany, France, the

former Soviet Union

Countries that use the first triangle projection

GB and ISO standards generally use the first perspective method, Japan, Taiwan

and other customary triangle method. The top view of the third triangle is placed

on the main view, and the left view is on the left side of the main view, which, in

turn, is opposite to the first angle method, so it is not customary at first.

Now with more international standards, so the third perspective on more,

before there are drawings conversion, now omitted. More familiar, habits like.

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本文标签: 投影 视图 视角 日本 使用