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Elements and Performance Criteria

  1. Prepare for sharpening
  2. Assess condition and set up sharpening equipment
  3. Sharpen circular saw blade

Performance Evidence

A person demonstrating competency in this unit must satisfy all of the elements, performance criteria and foundation skills of this unit. If a specific volume or frequency is not stated below, then evidence must be provided that the following requirements have been performed on at least one occasion:

follow organisational policies and procedures relevant to sharpening circular saws

remove and replace circular saw blades from equipment

sharpen circular saw blades in line with an individual work order for each job

assess cutting performance as follows:

saw performance balanced against achievement of required production time

degree of deviation in the range of sawn products

assess the condition of blade teeth for:

sharpness of tooth cutting edges

angles within the tooth profile

tooth strength

damage to teeth

pitch

depth

number of teeth per metre

operate the abrasive wheel at appropriate speed to remove material without affecting steel characteristics

produce a quality of surface texture left by the abrasive wheel along the entire profile and at the intersection of all cutting edge angles.


Knowledge Evidence

A person competent in this unit must be able to demonstrate knowledge of:

purpose, features and operation of circular saws for which blades are sharpened

features and names of different parts of circular saw blades

purpose, features and operation of tools and equipment used to sharpen circular saw blades:

gulleting and grinding machines

abrasive wheels

importance of sharpening and setting teeth and tension to match requirements for:

characteristics of various materials sawn

speed of the sawing process

direction of the sawing process

cutting angle for sawing

saw blade specifications

methods for:

removing saw blades from circular saws

assessing saw blade condition

sharpening blades to specified requirements

setting teeth to a specified profile

setting concentricity of teeth

tooth pitch and tooth angles at which blades are sharpened (blade geometry)

range of speeds at which abrasive wheels can be operated without damaging blades

organisational policies and procedures specific to sharpening circular saw blades:

workplace health and safety with particular emphasis on equipment lock out and use of personal protective equipment

communication reporting lines

recording and reporting processing and equipment faults

environmental protection practices for repairing and maintaining tools and equipment in forest products factory settings:

reducing water and energy use

cleaning plant, tools and equipment

disposing of, recycling and reusing materials