The evidence guide specifies the evidence required to demonstrate achievement in the unit of competency as a whole. It must be read in conjunction with the unit descriptor, performance criteria, range statement and the assessment guidelines for the Metal and Engineering Training Package |
Overview of assessment requirements | A person who demonstrates competency in this unit must be able to perform milling operations. Competency in this unit cannot be claimed until all prerequisites have been satisfied. |
Context of assessment | This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate. |
Interdependent assessment | This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with milling operations or other units requiring the exercise of the skills and knowledge covered by this unit. |
Method of assessment | Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning should not require language, literacy and numeracy skills beyond those required in this unit. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials. |
Consistency of performance | Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts. |
Required skills | Look for evidence that confirms skills in: |
setting up jobs using appropriate equipment |
calculating and setting cutting feeds and speeds appropriate to the job |
interpreting drawings and job instructions/specifications |
milling components to specification |
visually and dimensionally checking components for conformance to specification |
Required knowledge | Look for evidence that confirms knowledge of: |
safety hazards associated with milling machines |
sequence of operations to achieve the job requirements |
cutter types and tooling geometry |
consequences of varying speeds and feeds from the optimum rates calculated |
effects of different materials on cutting speeds and feeds |
conventional and climb milling techniques and their applications |
the application of each of the following: slab, gang, shell, slot, form, and slitting |
applications requiring the use of dividing heads and rotary tables when milling components |
the procedures for using dividing heads and rotary tables on milling machines |
appropriate techniques, tools and equipment to measure milled components |
use and application of personal protective equipment |
safe work practices and procedures |