NZQA registered unit standard
2702 version 7
Page 1 of 4
Title
Set and operate a CNC machining centre
Level
4
Purpose
Credits
15
This unit standard covers setting and operating a Computer
Numerical Control (CNC) machining centre to produce
components to specified tolerances. Editing of CNC programs
to change speed, feed, and operational sequence requirements
is included.
People credited with this unit standard are able to: prepare to
set, set, and operate a CNC machining centre; and edit CNC
programs.
Classification
Mechanical Engineering > Engineering Machining and
Toolmaking
Available grade
Achieved
Entry information
Recommended skills
and knowledge
Candidates must be able to safely carry out basic machining
operations. This could be evidenced by credit for standards
such as Unit 21906, Perform basic mechanical engineering
machining operations under supervision, or demonstrate
equivalent knowledge and skills.
Explanatory notes
1
References
Health and Safety in Employment Act 1992;
Occupational Safety & Health Service. Guidelines for Guarding Principles and
General Safety for Machinery. Wellington: Department of Labour, 1995.
2
Definitions
CNC – Computer Numerical Control.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
2702 version 7
Page 2 of 4
CNC machining centre – refers to machines that combine point-to-point and
continuous path operations. Features include automatic tool selection and changing,
and the ability to carry out drilling, milling, boring, turning, and grinding operations
with three or more controlled axes and a rotary controlled table.
Safe working practices – work practices designed to prevent personal injuries and
damage to equipment and plant. This includes practices relating to personal attire
and use of safety clothing and equipment, use of machinery and tools, and handling
of materials and waste.
Worksite procedures – operational procedures put in place by the candidate’s
employer. These include site safety procedures, equipment operating procedures,
job procedures, and procedures for the handling and disposal of materials and waste.
3
Assessment Information
a
All activities must comply with relevant legislative and/or regulatory
requirements, which include, but are not limited to, the Health and Safety in
Employment Act 1992.
b
All activities must demonstrate safe working practices.
c
Technical problems encountered may be resolved in consultation with technical
advisors.
4
Range
Evidence of setting and operating a CNC machining centre for at least three different
jobs is required.
Outcomes and evidence requirements
Outcome 1
Prepare to set a CNC machining centre.
Evidence requirements
1.1
Machine is lubricated and routine maintenance carried out in accordance with
worksite procedures.
1.2
Drawings, instructions, and specifications are interpreted to establish job
requirements.
1.3
Tools and work-holding devices are selected and prepared for safe and efficient
machining.
Outcome 2
Set a CNC machining centre.
Evidence requirements
2.1
Work-holding devices are installed on the machine in accordance with worksite
procedures.
2.2
Tools are loaded into tool magazine in accordance with worksite procedures.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
2702 version 7
Page 3 of 4
2.3
Machine is aligned to specified datum points in accordance with worksite
procedures.
2.4
Program is selected and loaded in accordance with worksite procedures.
2.5
Tools are set to datum points or zero in accordance with worksite procedures.
2.6
Sample components are produced and measured to check they meet
specifications.
Outcome 3
Edit CNC programs.
Evidence requirements
3.1
Need for editing is verified against specifications and operating conditions.
3.2
Program is edited to achieve required change.
3.3
The edited program is made current in accordance with worksite procedures.
3.4
Sample components are produced and measured to check they meet
specifications.
Outcome 4
Operate a CNC machining centre.
Evidence requirements
4.1
Machine coolant type and flow are adjusted as required by machining
operations.
4.2
Components are machined and finished to specifications, without damage to
machine or tools.
4.3
Worn or damaged tooling is adjusted, or replaced when required, in accordance
with worksite procedures.
4.4
Machine is cleaned and waste material disposed of in accordance with worksite
procedures.
Planned review date
Competenz
SSB Code 101571
31 December 2014
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
2702 version 7
Page 4 of 4
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
17 January 1995
31 December 2012
Revision
2
14 April 1997
31 December 2012
Revision
3
13 November 1997
31 December 2012
Revision
4
5 January 1999
31 December 2012
Revision
5
25 September 2001
31 December 2012
Review
6
20 June 2006
N/A
Rollover and
Revision
7
17 November 2011
N/A
Consent and Moderation Requirements (CMR) reference
0013
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR 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 qualifications@competenz.org.nz if you wish to suggest
changes to the content of this unit standard.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016