TS 12366

TS 12366 is the occupational standard for the milling machine operator, covering the definition and classification of the profession together with the tools, equipment and competence profile associated with the job. In practical terms, it organizes what the milling occupation is, how it is grouped, and which core knowledge and skills are expected within its different levels.

Milling is a core process in machining, where a rotating cutting tool removes material to form a desired shape, surface or dimension. In general technical terms, a milling machine operator works with workholding, cutting tools, measurement, setup and process control to achieve accurate results. The underlying technology may range from conventional manual machines to more advanced systems, but the basic principle remains controlled material removal by a rotating cutter.

Classification and competence expectations

The scope of this standard is directed at describing the profession and specifying its classification, rather than presenting a detailed process manual. That makes it useful as a common occupational framework: it helps define what belongs to milling work, what equipment is typically involved, and what knowledge areas are relevant to each class of worker. In broader vocational terms, such standards support consistent job definitions and training alignment.

Typical competence areas in milling work include reading technical drawings, measuring and checking dimensions, selecting cutters and fixtures, planning the machining sequence, and verifying the finished part. TS 12366 centers on the occupational profile itself, so it serves as a structured reference for understanding the role of the milling machine operator within manufacturing practice.

• Definition and classification of the milling machine operator occupation
• Framework of tools, equipment and work aids used in milling
• Knowledge and skill requirements for each occupational class