该小组履行以下部分或全部职责：

• 研究作业单并解释蓝图以确定要执行的加工操作
• 设置和操作机床以执行重复的机加工操作，例如车削、铣削、钻孔、镗孔、刨削、珩磨、拉削、磨削或其他机加工操作
• 使用千分尺、卡尺和其他精密测量仪器验证加工零件的尺寸
• 准备蚀刻液，将金属零件或工件浸入蚀刻液中，去除不需要的部分
• 对设备和机械进行日常维护
• 可以输入代码指定计算机数控 (CNC) 机床的刀具路径的速度、进给和切割。

• 中学教育是必需的。
• 可能需要大学或其他机械加工课程。
• 提供数周的在职培训。
• 本单元组的高级职位，例如设置操作员，需要有机器操作员的经验。

• 经验丰富的机加工工具操作员可以通过学徒培训成为机械师或工具和模具制造商。

• 承包商和主管、机械加工、金属成型、成型和安装行业及相关职业 ( 72010)
• 机械师和机械加工和工具检查员（72100）
• 工具和模具制造商（72101）
• 计算机数控（CNC）程序员；计算机辅助设计/计算机辅助制造（CAD/CAM）程序员（22302工业工程与制造技术专家和技术人员）

This group performs some or all of the following duties:

• Study job orders and interpret blueprints to determine machining operations to be performed
• Set up and operate machine tools to perform repetitive machining operations, such as turning, milling, drilling, boring, planing, honing, broaching, grinding or other machining operations
• Verify dimensions of parts machined using micrometers, callipers and other precision measuring instruments
• Prepare etching solution and immerse metal parts or workpiece in etching solution to remove unwanted portions
• Perform routine maintenance on equipment and machinery
• May enter codes specifying speed, feed and cut of the toolpath for computer numerical controlled (CNC) machine tools.

• Secondary school education is required.
• College or other courses in machining may be required.
• Several weeks of on-the-job training are provided.
• Senior positions in this unit group, such as set-up operator, require experience as a machine operator.

• Experienced machining tool operators may become machinists or tool and die makers through apprenticeship training.

• Contractors and supervisors, machining, metal forming, shaping and erecting trades and related occupations (72010)
• Machinists and machining and tooling inspectors (72100)
• Tool and die makers (72101)
• Computer numerical control (CNC) programmer; computer-assisted design/computer-assisted manufacturing (CAD/CAM) programmer (in 22302 Industrial engineering and manufacturing technologists and technicians)