21788 version 2
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Demonstrate and apply knowledge of manufacturing processes and
equipment for mechanical engineering
Level
5
Credits
15
Purpose
People credited with this unit standard are able to: select mechanical
engineering manufacturing processes for metal products; select mechanical
engineering manufacturing processes for plastic products; and select
equipment and tooling to support mechanical engineering manufacturing
processes.
Subfield
Mechanical Engineering
Domain
Applied Principles of Mechanical Engineering
Status
Registered
Status date
27 October 2005
Date version published
19 March 2010
Planned review date
31 December 2015
Entry information
Open.
Replacement information
This unit standard replaced unit standard 11397.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
Competenz
Accreditation and Moderation Action Plan (AMAP) reference
0013
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
All activities must comply with: any policies, procedures, and requirements of the
organisations involved; the ethical codes and standards of relevant professional
bodies; and any relevant legislative and/or regulatory requirements, which may
include but are not limited to the Health and Safety in Employment Act 1992,
Resource Management Act 1991, and their subsequent and delegated legislation.
 New Zealand Qualifications Authority 2016
21788 version 2
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2
Range
For metal products:
Casting must include – rotary, die, centrifugal, sand, shell;
Machining must include – turning, milling, grinding, rolling, spinning, electro
discharge machining, laser machining;
Forging must include – drop, press, stamp;
Fabrication must include – pressing, folding, welding, cutting, press forming;
Rolling must include – hot, cold;
Extrusion must include – forward, reverse, impact;
Surface finishing must include – painting, polishing, plating.
For plastic products:
Moulding must include – compression, transfer, injection, blow, rotational.
Elements and performance criteria
Element 1
Select mechanical engineering manufacturing processes for metal products.
Range
processes – casting, machining, forging, fabrication, rolling, extrusion, surface
finishing;
evidence is required for one of each process and for one combination of
processes.
Performance criteria
1.1
Selected processes enable the achievement of product specifications.
Range
1.2
product specifications may include but are not limited to – material,
tolerances, strength, ductility, finish.
Potential hazards to personnel, product, and plant are identified, and actions to
control these hazards are described in accordance with relevant legislative
requirements.
Element 2
Select mechanical engineering manufacturing processes for plastic products.
Range
processes – blending, compounding, moulding, extrusion, sheet forming,
composites;
evidence is required for one of each process and for one combination of
processes.
Performance criteria
2.1
Selected processes enable the achievement of product specifications.
Range
product specifications may include but are not limited to – material,
tolerances, strength, finish.
 New Zealand Qualifications Authority 2016
21788 version 2
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2.2
Potential hazards to personnel, product, and plant are identified, and actions to
control these hazards are described in accordance with relevant legislative
requirements.
Element 3
Select equipment and tooling to support mechanical engineering manufacturing
processes.
Range
processing of metal products and plastic products.
Performance criteria
3.1
Selected equipment and tooling enables products to be manufactured to
specifications.
Range
3.2
Selected equipment is specified by generic category.
Range
3.3
specifications may include but are not limited to – material,
tolerances, strength, ductility, finish.
metals category – removal, forming, fabrication, finish;
plastics category – moulding, extrusion, sheet forming, composite.
Selected equipment and tooling meet requirements for safety and
environmental protection.
Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact Competenz info@competenz.org.nz if you wish to suggest changes to the
content of this unit standard.
 New Zealand Qualifications Authority 2016