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Evidence Guide: MEM07008D - Perform grinding operations

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MEM07008D - Perform grinding operations

What evidence can you provide to prove your understanding of each of the following citeria?

Determine job requirements

  1. Job requirements are determined from specifications, and sequence of operations is determined
  2. Correct and appropriate holding devices are selected and applied
Job requirements are determined from specifications, and sequence of operations is determined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Correct and appropriate holding devices are selected and applied

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Observe safety precautions

  1. Machine guards, coolant and dust extraction devices are checked
  2. Correct safety procedures are observed and protective clothing and safety glasses are worn
Machine guards, coolant and dust extraction devices are checked

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Correct safety procedures are observed and protective clothing and safety glasses are worn

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select grinding wheels and accessories

  1. Wheels are selected, balanced and dressed based on knowledge of grinding wheel structure and application
  2. Accessories are selected to facilitate production to job specifications
Wheels are selected, balanced and dressed based on knowledge of grinding wheel structure and application

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Accessories are selected to facilitate production to job specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform grinding operations

  1. Grinding machine is set up and adjusted in accordance with defined procedures
  2. Work piece is held or clamped appropriately to avoid damage
  3. Grinding operations are performed safely, utilising all guards, safety procedures and personal protective clothing and equipment
Grinding machine is set up and adjusted in accordance with defined procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Work piece is held or clamped appropriately to avoid damage

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Grinding operations are performed safely, utilising all guards, safety procedures and personal protective clothing and equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check components for conformance with specifications

  1. Components are checked for conformance to specification using appropriate techniques, tools and equipment
Components are checked for conformance to specification using appropriate techniques, tools and equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to perform a variety of grinding operations to specifications. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently apply the skills covered in this unit of competency in new and different situations and contexts. Critical aspects of assessment and evidence include:

determining requirements for grinding job including quantity, material, measurements and tolerances

correct job planning including identifying required measuring instruments and equipment, safety equipment, holding devices, grinding wheels, accessories and sequence of operations

identifying guard, coolant and dust extraction requirements and checking equipment and coolant before grinding operation

correct fixing of job

correct monitoring of grinding operation

undertaking grinding to trade standard in terms of time and responsibility for own work

undertaking correct remedial procedures for out of specification results as per enterprise procedures e.g. procedures for scrapping or reworking of components not ground to specification.

Context of and specific resources for assessment

This unit has been developed to support training in and recognition of trade level competency in grinding operations as applied to a trade level fitting and machining work environment. Assessment should emphasise a workplace context and procedures found in the candidate's workplace.

The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

Method of assessment

Typically, persons engaged in Engineering Tradesperson - Mechanical work are required to apply their grinding operations skills and techniques across a range of jobs and specifications.

A single assessment event is not appropriate. On the job assessment should be included as part of the assessment process wherever possible. Where assessment occurs off the job, judgement must consider evidence of the candidate's performance in a productive work environment that includes a sufficient range of appropriate tasks and materials to cover the scope of application for this unit.

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency.

The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Guidance information for assessment

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with grinding operations or other units requiring the exercise of the skills and knowledge covered by this unit.

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Required Skills and Knowledge

Required skills

Required skills include:

reading and interpreting information on written job instructions, procedures, specifications, charts, lists, drawings and other applicable reference documents

checking and clarifying task related information

preparing an operational work plan

planning and sequencing operations

using precision measurement equipment within the scope of this unit

setting up work using tools, techniques and equipment

using coolant and dust extraction devices

selecting and preparing grinding wheels and accessories appropriate to the grinding task

performing and monitoring internal/external cylindrical grinding process

clamping/mounting work pieces

checking for conformance to specifications

performing numerical operations and calculations within the scope of this unit

Required knowledge

Required knowledge includes:

reasons for selecting the chosen sequence of operations

the application of a range of holding devices/accessories

reasons for selecting specific work holding devices, tools, techniques and equipment

coolant selection/function

standard grinding wheel shapes

the range of abrasive materials used in grinding wheels

factors impacting grinding wheel selection including grain size of abrasive particles, grade or strength of bond and bond material

grinding wheel dressing tools and their application

internal/external cylindrical grinding process

principles of effective clamping

grinding operations/procedures

the function of any grinding accessories

tools, techniques and equipment for checking components for conformance to specifications

hazards and control measures associated with grinding operations, including housekeeping

use and application of personal protective equipment

safe work practices and procedures

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Specifications

Specifications may include:

dimensions and tolerances

geometry and tolerances

surface finish

Holding devices

Holding devices may include:

vices

clamps

magnetic chucks

face plates

collets

3/4 jaw chuck

Wheels

Wheels may include:

shape

grit/bond composition

Balanced

Balanced may include static and dynamic balancing

Grinding machines

Grinding machines may include surface, cylindrical and centreless machines