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Edge Information

The edges of workpieces can, for example, after a machining gratig his or sharp. Or they do not have other desired geometries. For this reason can be found in technical drawings figures for the state of edges (inner and outer edges edges) make. These drawings are in ISO 13715 set.


Symbol for Edge Information - Technical Draw

If you have an outside edge that can either be gratig or burr-free. If an inner edge exists, it can be either a transition or removal as defined. The definition is made by the symbol for edge data (see picture below).
The symbol for the edge information in technical drawings will be complemented by a measure of the maximum value of the ridge, or the transition angiebt ablation. Before the measure is a sign that either the''+''- or'+/-' can be. The importance of the omens are in the table below.

sign
Importance to the outer edge
Importance for inner edge
+
grout
descent
-
grout free
removal
+/-
grouty or grout free
descent or removal

The following table values for shares edge information into categories to complete a guide for edge information in technical drawings to give.

Value Edge indication
[mm]
Kategorie for outer edge
Kategorie for inner edge
+0,05 bis +2,5 or more
grouty
descent
to +0,05
Edge is sharp
Edge is sharp
to -0,05
Edge is sharp
Edge is sharp
-0,05 to -2,5 or more
grout free
removal

Edge icon in the technical drawing

In technical drawings edge information can be accommodated by an arrow directly with a certain edge of the workpiece and the edges are signs indicating registers. An example you see in the picture right.


If you have a general indication projections for the entire subscription wants, you can run the edge icon in the upper right corner of the technical drawing register. In the picture on the left you will see an example of this.
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