Numerically controlled machine tool operator (installer) is the most important link in the modern production process. With the growth of automation, numerical specialists for programming, setting and inspecting control machine tools are needed today in most factories and manufacturing companies in the mechanical engineering, machine tool construction, aerospace and shipbuilding, woodworking and furniture industries.
Numerically controlled machine tools (milling, turning, internal turning, drilling machines) are used in the automated conveyor production of series parts of metal, alloys, plastic and wood. On the basis of the drawings and technical task, the operator determines the program and enters into it the technical parameters according to which the machine performs the programmed continuity of operations with the required size and shape to obtain uniform details. The work of a numerically controlled machine tool operator combines mental and physical activities.
Obligations of the operator of machine tools with numerical control:
- Computer modelling of details;
- Editing the control program, selecting the cutting mode and setting the machining parameters of the parts;
- Selecting machine tool cutting tools (blade, drill, knives) and other work elements, assembly into instrument blocks, resetting all assemblies and mechanisms;
- Installing the workpiece and removing the finished part;
- Control-measurement operations; checking the conformity of the size of the processed parts to the technical task;
- Checking the correct operation of the machine on the basis of signal lamps and number tables, periodic inspection of cutting tools;
- Proofreading of control programs and reconfiguration of the machine for each new batch of parts;
- Workplace preparation and cleaning.
Requirements for the personal characteristics and physical characteristics of machine tool operators:
- Technical mindset and advanced spatial thinking;
- Visual motor coordination and good measurement by eye;
- Patience and lasting concentration;
- Reaction rate.
In short, there are no special physical limitations in this profession – women work as numerically controlled machine tool operators on an equal footing with men. Although stamina is still beneficial, you have to perform the same type of operations throughout the shift. Numerical control machines are not recommended for people with a predisposition to arthritis and joint disease, or for people with vision or respiratory problems.
How to learn to work on machine tools with numerical control:
People with higher technical education as well as trained specialists with secondary and secondary technical education suit to this position. In a number of cases, training to work on machine programs with numerical program control takes place directly in production, but a specialist with basic experience, the corresponding rank and qualification documents is of greater value to the employer.
It is practically impossible to learn to work with numerical program control on machine tools independently. For more effective employment, it would be appropriate to undergo full professional training and obtain either a diploma or a certificate.
What an operator of numerically controlled machine tool needs to know:
- Be able to read drawings and technical documentation;
- Construction and principle of basic types of numerically controlled machine tools and control measuring instruments;
- Properties and mechanical characteristics of the materials used;
- General Tolerance;
- Computer modelling, processing and finishing of parts of the required shape and size;
- Detail cutting modes;
- The main types of damage to machine tools and cutting tools, measures for their elimination;
- Knowledge of electrical and fire safety, safety standards when working on machine tools and cutting tools, as well as knowledge of occupational safety and hygiene at work.