Properly executed drawings create conditions for the successful functioning of modern industry drawings mechanisms and are an integral part of the preparation of design documentation, which is necessary for its existence and for further technological development. With the help of drawings, large volumes of special technical information related to industrial equipment of the widest profile are recorded and further stored. In fact, drawings are design documentation, the main purpose of which is a visual explanation of the internal and external devices of various mechanisms, units and assemblies. And also the description of ways of interaction of their separate components among themselves.
According to the current technical requirements, the image of the parts in the drawings should be such that it can be used to get full information about the shape of the part and its parameters. For example, such as the location of surfaces, allowable deviations in size, and so on.
In addition, the drawings should also indicate the material of manufacture of parts, the method of their external coating or heat treatment, hardness and a number of other parameters.
According to such drawings produce not only work on the manufacture of various parts, but also work on the Assembly of units, mechanisms, and even technologically complex machines.
That is why all the information presented in the drawings should give experts comprehensive answers to questions about how each individual part, and the entire assembled mechanism as a whole.
The main requirement for technical drawings is to use all the necessary information in a simple and understandable form. To standardize such information a unified system of Design Documentation was developed and implemented in production
Certain drawing sheet size standards (formats) have been developed for technical drawings. This is done to simplify the storage of drawings and their use in document management.
The drawing must have a basic label that gives basic information about the product depicted in the drawing. At the same time, the shape, size and content of this inscription is regulated by a special standard.
The scale of the drawings
For the execution of technical drawings, special scales are used, the dimensions of which are standard. As you know, the scale is the ratio of the linear dimensions of the object depicted in the drawing to its actual size.
The required scale is selected based on the size of the object, its technical complexity, the presence of components. The view of the drawing itself is also taken into account.