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Elements and Performance Criteria

  1. Prepare to operate a CNC machine
  2. Operate a CNC machine
  3. Perform necessary adjustments during machining process
  4. Clean up work area and maintain equipment

Required Skills

Required skills

technical skills to

monitor the machine or process for signs of tool wear and take corrective action

measure to specified tolerances and dimensions

communication skills to

follow oral instructions

report deviations from specifications

literacy skills to

read and interpret routine job instructions specifications drawings and standard operating procedures

make prestart checks

understand quality procedures

numeracy skills to use mathematical ideas and techniques to

calculate time

assess tolerances

apply accurate measurements

calculate material requirements

establish quality checks

problemsolving skills to

identify and avoid planning and scheduling problems

prevent time and material wastage

organise work and plan processes

selfmanagement skills to

select and use appropriate equipment materials processes and procedures

recognise limitations and seek timely advice

follow workplace documentation such as codes of practice and operating procedures

teamwork skills to

work with diverse individuals and groups

apply knowledge of own role to complete activities efficiently to support colleagues activities and tasks

technology skills to use communication devices and computerised equipment to

search and gather supporting material

follow CNC machine operating procedures

Required knowledge

WHS regulations and requirements equipment material and personal safety requirements relating to the use of CNC machines

procedures for accessing computercontrolled programs installed in the machine controller including

posting appropriate program to the machine

selecting tool specified by the program and for the material to be machined

selecting appropriate speeds and feeds

computercontrolled machine operating procedures including

zeroing the machine axes

engaging warmup procedures and checking lubricant levels coolant levels and machine slide ways

mounting tool in tool holder

setting tool height manually

setting machine offset parameters to correct tool number and height

setting work piece datumzero point

recording data in machine offsets

selecting dryrun mode on CNC controller and single block to test program

procedures for basic editing of computer program to reflect specific job requirements

typical machine malfunctions

tool wear and the effect of wear on product or part specifications

procedures to be followed once tool wear has been detected

preset tool replacement procedures

adjustment procedures of tool offsets

effect of adjustments on machining specifications

Evidence Required

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria required skills and knowledge range statement and the Assessment Guidelines for the Training Package

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy all of the requirements of the performance criteria and required skills and knowledge

A person who demonstrates competency in this unit must be able to

observe safety procedures and requirements

communicate effectively with others involved in or affected by the work

select methods and techniques appropriate to the circumstances

complete preparatory activity in a systematic manner

conduct CNC machining of a range of engine components according to workplace manufacturer and component supplier requirements

produce engine components that comply with workplace requirements

Context of and specific resources for assessment

Competency is to be assessed in the workplace or a simulated workplace environment that accurately reflects performance in a real workplace setting Performance is demonstrated consistently over a period of time and in a suitable range of contexts

Assessment is to occur

using standard workplace practices and procedures

following safety requirements

applying environmental constraints

Assessment is to comply with relevant

regulatory requirements

Australian standards

industry codes of practice

The following resources must be made available for the assessment of this unit

appropriate worksite

CNC machines appropriate for machining automotive engine components

a range of engine components

specifications and work instructions

Method of assessment

Assessment must satisfy the endorsed Assessment Guidelines of this Training Package

Assessment methods must confirm consistency and accuracy of performance over time and in a range of workplace relevant contexts together with application of required skills and knowledge

Assessment methods must be by direct observation of tasks and include questioning on required skills and knowledge to ensure its correct interpretation and application

Assessment must confirm that competency is able not only to be satisfied under the particular circumstance but is able to be transferred to other circumstances

Competence in this unit may be assessed in conjunction with other units which together form part of a holistic work role

Where applicable reasonable adjustment must be made to work environments and training situations to accommodate ethnicity age gender demographics and disability

Assessment processes and techniques must be culturally sensitive and appropriate to the language and literacy capacity of the candidate and the work being performed


Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Workplace instructions may include:

computer-generated instructions

verbal instructions

written instructions.

Information may include:

Australian standards

engineer’s design specifications and instructions

instructions issued by authorised workplace or external persons

workplace specifications and requirements

regulatory and legislative requirements pertaining to automotive industry, including Australian Design Rules

safe work procedures relating to the operation of CNC machines

verbal, written and graphical instructions, signage, work schedules, plans, specifications, work bulletins, memos, material safety data sheets (MSDS), diagrams or sketches.

WHS requirements may include:

individual state or territory regulatory requirements

operational risk assessment and treatments associated with:

electrical safety

machinery movement and operation

manual and mechanical lifting and shifting

toxic substances

working in proximity to others and site visitors

personal protective equipment (PPE) required by legislation, regulations, codes of practice and workplace policies and procedures.

Environmental requirements include:

clean-up management

dust and noise minimisation

waste management.

Engine components may include:

engine blocks

engine cylinder heads

engine manifolds.