603 CNC Machining

Deputy coordinator Esa Ojaniittu from Sasky and coordinator Lasse Tuominen from Vexve Oy

A machinist produces pieces and machine parts of metal or other machining materials using various machining techniques and paying attention to work safety. Pieces are manufactured with a computer-controlled lathe and a machining centre. CAD/CAM software is used for programming.

Machinists work mainly in machine shops and metal workshops or as entrepreneurs. The requirements of the profession include knowledge of machining techniques and the materials used, as well as to be accurate, cautious and co-operative, also observing the principles of sustainable development.

Skill requirements

The competition tasks are based on the requirements for the grade Excellent (K3) of the vocational qualification in Metalwork and Machinery as well as the requirements of working life for young employees. The most important competence areas are NC turning, NC milling, CAD/CAM 2D programming and machine shop measurement.

 

CNC Machining finals

The Taitaja2018 competition will be held in the Tampere Exhibition and Sports Centre from 14 to 17 May 2018. Here you will find the finals task description for 603 CNC Machining.

Finals

Competition task structure and central components:

Skill requirements:

CNC turning, CNC milling, CAD/CAM-2D programming as well as machine shop measurements and reading technical drawings. The tasks are in line with the ”Excellent” (K3) grade level.

Assessment criteria

Total score is 100 points

Module 1: CNC turning forms 40 points, objective assessment

Module 2: CNC milling forms 40 points, objective assessment

Module 3: Machine shop measurement and reading technical drawings form 15 points, objective assessment

Module 4: The competitor’s actions and work safety, wellbeing at work, entrepreneurship and sustainable development on all of the previous modules form 5 points, objective assessment

The assessment is always performed at the end of the module. Measurements in the assessments are mainly performed by a coordinate measuring machine and digital micrometers.

 

Module 1: CNC turning forms of s355 steel with a Hyundai Wia CNC turner with coolants.

Two similar forms are manufactured in the module, both of which are assessed.

The competitor performs the turning primarily by using the Mastercam CAM software, but programming by hand using G code is also possible.

The blades are readily installed and measured in the machine, but the competitor must check the correctness of the blade information.

The module starts with a programming part, after which the competitor moves on to the machine.

The maximum score for this module is 40 points.

 

Module 2: CNC milling forms of s355 steel with a Hyundai Wia machining centre with coolants.

The competitor performs the milling primarily by using the Mastercam CAM software, but programming by hand using G code is also possible.

Knowing how to programme high-speed toolpaths is extremely useful, but the form can also be shaped traditionally using 2D paths.

The form includes threads to be milled.

The blades are readily installed and measured in the machine, but the competitor must check the correctness of the blade information.

The module starts with a programming part, after which the competitor moves on to the machine.

The maximum score for this module is 40 points.

 

Module 3: Machine shop measurements and reading technical drawings

The competitor measures the forms with his or her personal measuring devices. (If needed, the measuring devices can be provided to the competitor.)

The targets measured include outer and inner diameters, thread pitch diameter and the realization of geometrical tolerances.

A list of measuring devices is published before the competition.

The maximum score for this module is 15 points.

 

Module 4: The competitor’s actions and work safety, wellbeing at work, entrepreneurship and sustainable development

The competitor shall not break blades, machines or tools during the competition, and the competitor shall clean up and recycle chips from the machine in a predetermined location during the competition. The competitor shall use protective equipment when working on the machines and work in an effective and ergonomic manner.

The maximum score for this module is 5 points.

 

Please note:

The competitor is not allowed to leave the competition area without a judge’s permission

The use of mobile phones is prohibited during the competition

Personal cutting tools are not allowed

The use of notes, textbooks and books of tables is allowed in modules 1 and 2.

Clamps and machine jaws are pre-set and clocked in the machines. Each machine has a dial gauge and a stand for the competitor to check the straightness of the setting.

 

The competitor brings to the competition site:

  • Personal measuring devices
  • Safety shoes
  • Safety goggles and earplugs are provided at the competition site, but personal ones are also allowed
  • A pocket calculator