How To Understand Mechanical Drawings?

DALIAN, China - Aug. 1, 2022 - PRLog -- Types Of Mechanical Drawings

There are many kinds of mechanical drawings, including assembly drawings, sketches, schematic diagrams, part drawings, BOM, etc. first of all, you need to determine what drawing you get, so that you can know what object the drawing expresses, what aspects it expresses, and to what extent.

How To Understand Mechanical Drawings?

1. First of all, it is necessary to clarify what type of drawings you get, assembly drawing, schematic diagram, or part drawing, BOM. Different types of drawings have different information and emphasis.
2. First look at the object described in the drawing, that is, the title of the drawing; Although everyone and every company's drawings will be the same, everyone basically follows the national drawing standards. A drawing is made to show people. If there are too many special places that others can't understand, it will lose its meaning. So first look at the object name, number, quantity, material (if any), proportion, unit and other information in the title bar (lower right corner).
3. Orient the view. Standard drawings have at least one view. The concept of view comes from the projection of descriptive geometry, so the basic concept of three views must be clear, which is the basis of reading the drawing. Understanding the relationship between the views on the drawing can basically understand the general shape of the product expressed in the drawing; According to the projection principle, the shape of the object can be expressed, and the object can be placed in any quadrant. Generally, the method of putting the object in the first limiting image to obtain the projection view is called the first angle projection method, so the second, third and fourth angle projection method can be obtained in the same way.

The first angle method is widely used in European countries (such as Britain, Germany, Switzerland, etc.), and the third angle method is the same as the direction in which we look at the position of the object, so the United States, Japan and other countries use this projection method; The Chinese national standard cnsb1001 stipulates that both the first angle method and the third angle method are applicable, but in the same figure, they cannot be used at the same time.

1. The view corresponds to the key structure of the product. This is the key point of view, which requires accumulation and spatial imagination
2. Determine the product size. We only need to take a general look at this and have a general concept. If it is a manufacturer, we will see it when it is used.  Whole Post at https://www.sansmachining.com/how-to-understand-mechanica...