The first figure refers to a group of the machine, the second – its type, the third digit or the third and fourth digits reflect the basic size of the machine. For example, model 16K20 means: screw-cutting lathe with a maximum diameter of workpiece 400 mm. The letter between the second and third digit indicates a major modernization the basic model of the machine. Classification of machine tools in the degree of universality. specialized, which are intended for the manufacture of similar parts, such as body parts, step-shafts are similar in shape, but various sizes, and special, which are designed to produce one specific part of one form or with a slight difference in size. Classification of machine tools for accuracy. Classification of machine degree of automation.

Allocate automatic machines and semi-automatic. Automatic machine is called, in which, after adjusting all the movements necessary to perform the processing cycle, including loading and unloading of workpieces ready parts, is carried out automatically, ie mechanisms of the machine running unattended. Cycle of semi-automatic machine is also satisfied automatically, except for loading and unloading, which produces the operator, who is also shall start after the semi-automatic loading of each piece. In order for large-scale comprehensive automation and mass production of automatic lines and create systems that integrate a variety of machines and for small-scale production – flexible production modules (GMP). Automation of small-scale production of parts is achieved by creating computer-controlled machine tools (cycle), the designation of models introduced the letter U (or a numeric letter F).

The number after the letter A denotes the feature the control system; F1 – Machine with digital display (showing the numbers that reflect, for example, the position of movable body of the machine) and a preliminary set of coordinate F2 – Machine positional or rectangular system; F3 – Machine contouring system; $ 4 – CNC universal system for positional and contouring, for example, the model 1B732F3 – lathe contouring system NC. Classification of machine mass. Machines are divided into the lungs – of up to 1 m, average – up to 10 tons, heavy – over 10 tonnes Heavy machines are divided into: large – 16 to 30 tons, the actual heavy – 30 to 100 tons, extra-heavy – more than 100 m. There are the following machines – Universal, which is used for the manufacture of a wide range of parts with a large difference in size. These machines are adapted for different operations: Machines are divided into five classes: M – Machines normal precision, P – high precision machine tools, B – machines with high accuracy, high precision machine tools A and C – a particularly accurate or master machines. In the model designation may include a letter characterizing the accuracy of the machine.

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