NZQA registered unit standard 684 version 5
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Title
Level
Purpose
Grind and hone straight cutters
3 Credits 5
People credited with this unit standard are able to: manage hazards associated with grinding and honing straight cutters; clean and match cutters; prepare grinder; mount cutters and adjust grinder; grind and hone cutters; balance cutters; and store cutters.
Classification
Available grade
Entry information
Solid Wood Manufacturing > Timber Machining
Achieved
Recommended skills and knowledge
Unit 669, Demonstrate knowledge of grinding for saw doctoring, timber machining and finger jointing ; and Unit 15774,
Demonstrate knowledge of timber machining ; or demonstrate equivalent knowledge and skills.
Explanatory notes
1 The following apply to the performance of all outcomes of this unit standard: a All work practices must meet recognised codes of practice and documented worksite health and safety and environmental procedures (where these exceed the code) for personal, product and worksite health and safety, and must meet the obligations required under current legislation, including the Health and Safety in
Employment Act 1992, the Resource Management Act 1991, and their subsequent amendments. b All work practices must meet documented worksite operating procedures. This includes the recording (by electronic or non-electronic means) of activities, events, and decisions. c All evidence of communications gathered in relation to this unit standard must be in accordance with worksite procedures for content, recipient, timing and method.
2 The reference text for this unit standard is: Grind and Hone Straight Cutters, published by Competenz and available from Competenz at http://www.competenz.org.nz, or Competenz, PO Box 9005, Newmarket, Auckland
1149.
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SSB Code 101571
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New Zealand Qualifications Authority 2020

NZQA registered unit standard 684 version 5
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3 Definitions
Cutters refer to knives prepared for timber machining operations.
Worksite policies and procedures refer to documented policies and to documented or other directions provided to staff. These include, but are not limited to, ways of managing health and safety, environmental considerations, quality, and production, and must conform to legislation. Examples include standard operating procedures, company health and safety plans, onsite briefings, and supervisor’s instructions.
Outcome 1
Manage hazards associated with grinding and honing straight cutters.
Evidence requirements
1.1 Hazards associated with grinding and honing straight cutters are identified and actions to be taken to isolate, minimise or eliminate the hazards are described in accordance with worksite policies and procedures.
Range hazards may include but are not limited to – grinding wheel disintegration, loose grinding wheel, exposure to grinding coolant. evidence of three is required.
1.2 Safe work practices associated with grinding and honing straight cutters are used in accordance with worksite policies and procedures and legislative requirements.
Range
Outcome 2
Clean and match cutters. practices include
– isolation procedures, lock-outs, emergency stops, machine guarding, wearing of appropriate safety equipment.
Evidence requirements
2.1 Cutters are cleaned of all foreign matter that could affect grinding in accordance with worksite policies and procedures.
2.2 Cutters are checked for faults, and remedial action is identified, in accordance with worksite policies and procedures.
Range faults – warp, cracks, chips, burns, delamination, raised spots; action
– grind or replace.
2.3 Cutters are matched in pairs for dimension, shape and weight, and are marked, in accordance with worksite policies and procedures.
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SSB Code 101571
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New Zealand Qualifications Authority 2020

NZQA registered unit standard 684 version 5
Page 3 of 6
Outcome 3
Prepare grinder.
Evidence requirements
3.1 Grinder and work area are cleaned of all foreign matter that could affect grinding in accordance with worksite policies and procedures.
3.2 Grinding wheel and grinding speed is selected in accordance with worksite policies and procedures to suit cutter steel, and grinder, where indicated.
3.3 Grinding wheel is checked for faults, and remedial action is taken, in accordance with worksite policies and procedures.
Range faults – cracks, clogging; action
– replacement, dressing or shaping.
3.4 Grinding wheel is fitted and grinder operations are checked to manufacturer's specifications.
Range true running, vibration.
3.5 Grinding wheel is checked and dressed where indicated in accordance with worksite policies and procedures.
Outcome 4
Mount cutters and adjust grinder.
Evidence requirements
4.1 Cutters are set in the grinder to manufacturer's specifications, with cutters in sets. The effects of incorrect set-up are explained in accordance with the reference text.
Range effects of incorrect set-up of
– coolant flow, traversing stops, traversing speed, wheel advance, grinding angle.
4.2
4.3
Grinding angle is set in accordance with worksite policies and procedures.
Clearance between grinding wheel and cutters is adjusted to manufacturer's specifications.
4.4
4.5
Wheel advance is set to manufacturer's specifications.
Traversing stops are set to clear both ends of cutters in accordance with worksite policies and procedures.
4.6 Coolant level is checked and toppedspecifications. up in accordance with manufacturer’s
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New Zealand Qualifications Authority 2020

NZQA registered unit standard
4.7
684 version 5
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Grind solutions are handled and stored in accordance with Material Safety Data
Sheets (MSDS) and worksite policies and procedures.
Outcome 5
Grind and hone cutters.
Evidence requirements
5.1 Grinder is cleaned and lubricated as required, correct grinding wheel is selected and fitted, and angles are set, in accordance with worksite policies and procedures.
5.2 Cutters are mounted for grinding in accordance with worksite policies and procedures.
5.3 Operation of grinder is checked for problems after the first pass in accordance with worksite policies and procedures.
Range problems
– burning, incorrect grinding angle, incorrect cutter setup.
5.4 Coolant flow rate and cleanliness are maintained during wet grinding in accordance with worksite policies and procedures.
5.5 Cutter edges are sharpened to the specified angle in accordance with worksite policies and procedures and are free from defects.
Range defects – burning, chipping.
5.6 Cutter edges are ground to a constant straight line in accordance with worksite policies and procedures.
5.7 Cutters are honed, and burrs completely removed in accordance with worksite policies and procedures.
5.8 Grinder is cleaned in accordance with worksite policies and procedures.
Outcome 6
Balance cutters.
Evidence requirements
6.1 Cutter repairs are checked and re-ground where indicated in accordance with worksite policies and procedures.
Range checks of or for – identical size, identical weight.
6.2 Balancing equipment is set-up to manufacturer's specifications and cleaned of all foreign matter that could affect balancing operation.
Competenz
SSB Code 101571
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New Zealand Qualifications Authority 2020

NZQA registered unit standard
6.3
684 version 5
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Cutter weight is measured and action is taken when excess weight is detected in accordance with worksite policies and procedures.
Range
Outcome 7 regrind or discard.
Store cutters.
Evidence requirements
7.1 Cutters are stored in marked matched pairs or sets in accordance with worksite policies and procedures.
7.2 Cutters are stored in accordance with worksite policies and procedures for safety and avoidance of moisture and dust.
7.3 Records are completed in accordance with worksite policies and procedures.
Planned review date 31 December 2015
Status information and last date for assessment for superseded versions
Process Version Date Last Date for Assessment
Registration 1 27 January 1994 31 December 2012
Review
Review
2
3
24 October 1996
10 February 1999
31 December 2012
31 December 2012
Review 4 18 December 2006 31 December 2012
Review 5 15 April 2011 N/A
Consent and Moderation Requirements (CMR) reference 0173
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 (CMRs). The
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SSB Code 101571
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New Zealand Qualifications Authority 2020

NZQA registered unit standard 684 version 5
Page 6 of 6
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 the Competenz at info@competenz.org.nz if you wish to suggest changes to the content of this unit standard.
Competenz
SSB Code 101571
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New Zealand Qualifications Authority 2020