NZQA registered unit standard
22910 version 2
Page 1 of 3
Title
Demonstrate and apply knowledge of programming CNC engineering
machines
Level
3
Purpose
Credits
4
This unit standard covers principles and application of
programming of computer numerically controlled (CNC) lathes
and mills.
People credited with this unit standard are able to demonstrate
knowledge of CNC programming, and apply knowledge of CNC
programming to produce working programs.
Classification
Mechanical Engineering > Engineering Machining and
Toolmaking
Available grade
Achieved
Explanatory notes
1
References
ISO 6983-1:2009, Automation systems and integration - Numerical control of
machines – Program format and definition of address words – Part 1: Data format for
positioning, line motion and contouring control systems.
2
Assessment Information
The credit allocation for this unit standard assumes that prior credit has been gained
for Unit 22909, Demonstrate and apply knowledge of setting and operating CNC
engineering machines.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of CNC programming.
Evidence requirements
1.1
Main axes and typical reference points are identified for turning and machining
centres.
1.2
The absolute and incremental reference point systems are outlined.
1.3
The difference between point-to-point and continuous path machining is
explained.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
22910 version 2
Page 2 of 3
1.4
The difference between linear and circular interpolation methods is explained.
1.5
The concepts of tool length and cutter radius compensations are outlined, with
an indication of how they may be implemented in a program.
1.6
Given a short section of a program using G and M codes, together with
appropriate code tables, each statement is explained in terms of the
corresponding machine operations.
Outcome 2
Apply knowledge of CNC programming to produce working programs.
Range
evidence of at least one program is required for given machining work, for a
CNC lathe or mill. G code or another format compatible with the machine may
be used.
Evidence requirements
2.1
Set-up sheet is produced from given drawings.
set-up sheet contains at least – establishment of machine and part
zero points; types and locations of cutting tools and work-holding
devices; setting-up instructions.
Range
2.2
Programs demonstrate point-to-point machining, and continuous path
machining with linear and circular interpolation.
2.3
Programs demonstrate use of tool compensation.
2.4
Programs are test run, and produce the components within the specified
tolerances.
Replacement information
This unit standard replaced unit standard 2711.
Planned review date
31 December 2014
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
20 June 2006
N/A
Rollover and
Revision
2
17 November 2011
N/A
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
22910 version 2
Page 3 of 3
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