TS 12621

TS 12621 is a vocational standard for the Computerized Numerical Control (CNC) Machine Tools Operator occupation, defining the role and framing the qualifications expected from personnel performing this job at different levels. In general technical terms, CNC operation centers on running program-controlled machine tools in a consistent, efficient, and repeatable way; the standard therefore addresses not only machine use but also the structured knowledge, skills, and equipment associated with the occupation.

Technical scope of the occupation

The scope covers the description and classification of CNC machine tools operators, the tools and equipment to be used in the occupation, and the knowledge and skills each class of worker should possess. This indicates that CNC operation is broader than simply pressing controls on a machine: it involves reading programs, preparing the workpiece, selecting tools, checking dimensions, and following production flow requirements with discipline and consistency.

Understanding CNC operator work

From a general technical perspective, CNC technology uses numerical instructions to control machining operations such as milling, turning, drilling, and cutting. The operator plays a key role in interpreting the machine setup and production instructions correctly, with direct impact on quality, repeatability, and safe shop-floor practice. Standards of this kind help separate job levels and create a common language for training, competency assessment, and job definitions.

• Job definition and classification
• Tools, instruments, and equipment used in the occupation
• Knowledge and skills required for each level
• A competency framework for CNC machine tool operation