CNC Milling Programmer/Operator (Engineering) Ref: 1063 Location: Ladysmith

Overview: To set up, program and operate CNC milling machines to produce high-precision components to engineering drawings and specifications, ensuring quality, accuracy and efficiency in all machining operations.

Key Duties and Responsibilities

Machine Setup and Operation

• Set up and operate CNC milling machines (3-axis, 4-axis and 5-axis where applicable) to produce parts to specification.
• Select, mount and set cutting tools, work-holding devices, fixtures and vices.
• Set work offsets, tool length offsets and cutter compensation accurately.
• Load materials and monitor machine performance during production runs.
• Adjust feeds, speeds and depths of cut to optimise tool life, surface finish and cycle times.

CNC Programming

• Write, edit and prove out CNC programs (G-code and M-code) at the machine or using CAD/CAM software.
• Interpret engineering drawings, blueprints and GD&T to determine machining operations and sequences.
• Create and optimise tool paths for roughing, finishing, drilling, tapping and contouring operations.
• Run simulations and dry runs to verify programs and prevent collisions before cutting.
• Maintain and back up a library of programs, setup sheets and tooling lists.

Inspection and Quality Control

• Use precision measuring instruments such as micrometers, vernier and digital calipers, height gauges, dial indicators, bore gauges, thread and pin gauges, and depth gauges.
• Inspect first-off and in-process parts to ensure dimensions and tolerances are met.
• Operate CMM or other inspection equipment where available.
• Identify and report non-conforming parts, and take corrective action to prevent repeat defects.
• Complete inspection records and quality documentation accurately.

Maintenance, Housekeeping and Safety

• Carry out daily machine checks and routine maintenance, including lubrication, coolant levels and cleaning.
• Report machine faults, tooling issues and maintenance needs promptly.
• Maintain a clean, organised and safe work area (5S).
• Follow all health and safety rules, wear required PPE and comply with safe working procedures.

General

• Meet production schedules and delivery deadlines.
• Support and train junior operators and apprentices.
• Contribute to continuous improvement, waste reduction and cost savings.
• Communicate effectively with supervisors, engineers and quality personnel.

Qualifications and Requirements

• Grade 12 / Matric (or equivalent) with Mathematics and/or Technical subjects.
• Trade Test certificate as a Machinist (or equivalent NQF Level 4 or higher), or a relevant National Certificate / Diploma in Mechanical or Manufacturing Engineering.
• Certificate or proven training in CNC programming (e.g. Fanuc, Siemens, Heidenhain, Haas or Mazak controls).

Experience

• Minimum of 5+ years' proven experience as a CNC milling operator in a precision engineering or manufacturing environment.
• Proven experience in CNC programming, both manual G-code and CAD/CAM (e.g. Mastercam, Fusion 360, SolidWorks CAM or similar).
• Experience machining a variety of materials such as steel, stainless steel, aluminium, cast iron and plastics.

Skills and Knowledge

• Strong ability to read and interpret engineering drawings, including GD&T.
• Proficient in the use of precision measuring instruments and inspection techniques.
• Sound knowledge of machining processes, cutting tools, speeds and feeds.
• Good mathematical skills for calculating dimensions, tolerances and offsets.
• Strong problem-solving skills and attention to detail.
• Able to work independently and as part of a team, under pressure and to deadlines.
• Basic computer literacy.
• Safety-conscious with a responsible attitude.

Willing to work overtime or shifts when required.