Method specially used for drawing datum plane of combined H-steel

Abstract

The invention relates to a method specially used for drawing a datum plane of combined H-steel. The method includes the steps that first, a drawing device specially used for leading out datum lines of a middle flange plate is assembled; second, a drawing device specially used for leading out datum lines of side flange plates is assembled; third, datum lines of webs on the two sides of the middle flange plate of a combined H-steel component are drawn; fourth, the datum lines of the middle flange plate of the combined H-steel component are drawn; fifth, the datum lines of the upper half portions of the side flange plates are led out and drawn; sixth, the datum lines of the lower half portions of the side flange plates are led out and drawn; seventh, the datum lines of the lower portion of the middle flange plate of the combined H-steel component are drawn. The method specially used for drawing the datum plane of the combined H-steel is easy to machine and efficient in drawing, the drawing precision is improved, the drawing cost is reduced, and the assembly and installation quality of the component is effectively guaranteed.

Description

technical field [0001] The invention belongs to the field of drawing datum lines of steel components, in particular to a method for drawing datum lines of combined H-shaped steels. Background technique [0002] Generally, the drawing of the reference line of the combined H-shaped steel member is to determine the drawing of the reference line of the web surface on one side and determine the reference line of the other surfaces by drawing out the marking method to form a surface. In the prior art, when the reference line is drawn and drawn, a square or an additional ruler is often used. This method has the following disadvantages: 1. There are many tools used, two squares and a ruler, and the operation is cumbersome. There are many factors affecting the drawing accuracy; 2. It needs two people to cooperate to complete; 3. When the lead is drawn, one side is the line contact of the square, which is greatly affected by the accuracy of the web itself; 4. The thickness of the flan...

AI Technical Summary

Problems solved by technology

In the prior art, when the reference line is drawn and drawn, a square or an additional ruler is often used. This method has the following disadvantages: 1. There are many tools used, two squares and a ruler, and the operation is cumbersome. There are many factors affecting the drawing accuracy; 2. It needs two people to cooperate to complete; 3. When the lead is drawn, one side is the line contact of the square, which is greatly affected by the accuracy of the web itself; 4. The thickness of the flange plate Straightness and flange plate sets have high requirements on deviation

The above shortcomings lead to the problems of low efficiency, large errors and poor economy when drawing and drawing the baseline, which can no longer meet the development requirements of the industry for cost reduction and efficiency increase

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