Common knowledge about flanges: General methods and steps for reading drawings
Reading drawings is a basic requirement for employees in flange manufacturing companies.
Nov 14,2022
In flange production work, it is necessary to frequently refer to various drawings, using views, section views, and profile views to represent the internal and external structures of the flange; the contour dimensions and transitions of each part. Reading drawings is a basic requirement for employees in flange manufacturing companies.
General methods and steps for reading flange drawings:
(1) First, look at the title block to get a general understanding of the part.
Look at the title block to understand the part name, material, and scale, thereby gaining a general idea of the part's function, determining the type of part from its name, inferring the approximate processing method from the material, and assessing the actual size of the part from the scale for a preliminary understanding.
(2) Analyze and study the views, imagining the structural shape.
Examine the views, analyze the arrangement of each view of the part and the relationships between the views, the expression methods used, and the content expressed. Use methods such as assembly reading, shape analysis, and line-surface analysis to understand the structure of each part, imagining the shapes, relative positions, and functions of the various components.
(3) Analyze all dimensions to clarify the dimensional requirements.
Conduct a comprehensive analysis of the views and shapes, analyzing the dimensional references in the three directions of length, width, and height of the part. Then, starting from the references, use structural shape analysis as a clue to understand the defining and locating dimensions of each shape, clarifying the role of each dimension. The graphics and dimensions express the shape and size of the part, and when reading the drawings, one should analyze the combination of views, dimensions, and structural shapes.
(4) Analyze technical requirements to understand the entire drawing comprehensively.
When reading the drawing, clarify technical requirements such as surface roughness, dimensional tolerances, and geometric tolerances. Understand the meanings of their codes. If necessary, also analyze in conjunction with related parts.
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