SAQA All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.
SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: 

Produce complex components by performing internal and external grinding operations 
SAQA US ID UNIT STANDARD TITLE
258675  Produce complex components by performing internal and external grinding operations 
ORIGINATOR
SGB Generic Manufacturing, Engineering, Technology 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Manufacturing and Assembly 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 4  NQF Level 04  16 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "Reregistered" 		 2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard replaces: 
US ID Unit Standard Title Pre-2009 NQF Level NQF Level Credits Replacement Status
13317  Produce complex components by performing internal and external grinding operations  Level 4  NQF Level 04  12   

PURPOSE OF THE UNIT STANDARD 
The skills, values and knowledge reflected in this unit standard are required by people in the field of mechanical engineering. Learners should be able to perform duties on various grinding machine types including surface, cylindrical and centre less machines.

Qualifying learners can carry out grinding operations with a range of accessories and tools.

The results are checked with precision measuring instruments.

A person credited with this unit standard is able to:
  • Conduct pre operational check on grinder.
  • Plan and prepare cylindrical grinding machine.
  • Perform cylindrical grinding operations (external and internal).
  • Apply quality checks on components. 
    		•

    LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    Produce components by performing engineering grinding operations NQF Level 3. 

    UNIT STANDARD RANGE 
  • The scope and level of this unit standard is determined by the ranges as indicated under the specific outcomes.
  • The learner should be working autonomously. 
    		•

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Conduct pre operational checks on grinding machine. 
    OUTCOME NOTES 
    Assessment is repeated when changing from internal to external. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Machine headstock and chuck are checked to ensure that it is level and fastened. 
    ASSESSMENT CRITERION RANGE 
    Checking activities include but are not limited to guards, brake and feed systems, slide, coolant and oil level.
     

    ASSESSMENT CRITERION 2 
    Wheel requirements are checked in accordance with workplace procedures. 
    ASSESSMENT CRITERION RANGE 
    Checking activities include but are not limited to safety, balancing, truing and wheel selection for operation.
     

    ASSESSMENT CRITERION 3 
    Grinding accessories are selected specific to the grinding operation. 
    ASSESSMENT CRITERION RANGE 
    Selection activities include but are not limited to centres, tailstock, steady, jigs and fixtures.
     

    SPECIFIC OUTCOME 2 
    Plan and prepare cylindrical grinding machine. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The work piece is securely clamped to ensure that all safety precautions are adhered to. 
    ASSESSMENT CRITERION RANGE 
    Clamping may include three jaw chuck, magnetic chuck, jigs and fixtures.
     

    ASSESSMENT CRITERION 2 
    Work piece is clocked by using a dial test indicator. 

    ASSESSMENT CRITERION 3 
    Speeds and feeds are selected in accordance with the grinding operation. 
    ASSESSMENT CRITERION RANGE 
    Speeds and feeds are selected in conjunction with the type of material being ground.
     

    ASSESSMENT CRITERION 4 
    Machine started and shut down to ensure that all safety precautions are adhered to as per manual. 

    ASSESSMENT CRITERION 5 
    Coolant outlets are checked to ensure that there are no blockages. 

    ASSESSMENT CRITERION 6 
    Drawing is interpreted to determine the operational sequence plan. 

    ASSESSMENT CRITERION 7 
    Measuring equipment is selected ensure conformance to product and quality specifications and efficiency requirements. 
    ASSESSMENT CRITERION RANGE 
    Measuring equipment includes micrometers, gauges, venires, rule dial indicator.
     

    SPECIFIC OUTCOME 3 
    Perform external and internal cylindrical grinding operations. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The sequence of operation is planned in accordance with drawing. 

    ASSESSMENT CRITERION 2 
    Dimensions are checked and measured for roughness during intervals and adjusted accordingly to meet drawing specifications. 

    ASSESSMENT CRITERION 3 
    Component is grinded to finishing size. 

    ASSESSMENT CRITERION 4 
    Final measurements are taken for comparison with drawing specifications. 

    ASSESSMENT CRITERION 5 
    Work piece is removed from chucks/jigs in a safe way without damaging the part. 

    ASSESSMENT CRITERION 6 
    Safety and house keeping requirements are met in accordance with according to legal safety standards and company policies workplace practices. 
    ASSESSMENT CRITERION RANGE 
    Safety and house keeping includes but are not limited to cleaning and oiling machine.
     

    ASSESSMENT CRITERION 7 
    Modifications and adjustments are recorded and documented in accordance with workplace practices. 

    SPECIFIC OUTCOME 4 
    Apply quality checks on components. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Component is measured to ensure that it meet drawing specifications. 

    ASSESSMENT CRITERION 2 
    Components and measuring equipment are packed and stored and completed documents are in place in accordance with workplace practices. 

    ASSESSMENT CRITERION 3 
    Machine, accessories, tooling and workplace is cleaned to in accordance with legal and safety requirements. 

    ASSESSMENT CRITERION 4 
    Problems, changes and/or malfunctions are recognised and reported in accordance with workplace procedures. 

    ASSESSMENT CRITERION 5 
    Work completed is recorded in accordance with workplace procedures. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
    The assessment will be governed by the policies and guidelines of the relevant Education and Training Quality Assuror (ETQA) that has jurisdiction over this field of learning.

    The assessor will (at the very least) be accredited and have a relevant qualification and be a subject matter expert in this learning area and at least have 3 years experience in the skills specific area.

    The learner can be assessed against this unit standard to obtain credits or as part of an integrated assessment for a qualification:
  • Internal moderation.
  • External moderation.
  • An assessor, accredited by the relevant ETQA, will assess the learner's competency.
  • Assessment procedures will be supplied by the ETQA in alignment with NSB requirements.
  • All assessment activities must be fair, so that all candidates have equal opportunities. Activities must be free of gender, ethnic or other bias.
  • Assessment and moderation procedures, activities and tools must be transparent, affordable and support development within the field, sub-field and NQF.
  • Questions and answers to determine theoretical knowledge are expected.
  • Assessment of a portfolio of evidence.
  • Direct observation in simulated and/or controlled work conditions. 
    		•

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Names, functions and locations of:
  • Accessories.
  • Work holding fixtures.
  • Tools (geometry and composition).
  • Measuring equipment.
  • Personal protective equipment.
  • Common defects.

    Purpose of processes and procedures of:
  • Surface, cylindrical and centre less grinding machine operations covered by this unit standard.
  • Work piece and grinding wheel preparation.
  • Safety checks.

    Attributes, properties, characteristics related to:
  • Wheel types.
  • Grinding time limits.

    Cause and effect, implications of:
  • Implications of selecting inappropriate accessories, work holding fixtures, tools, Grinding wheels, feeds and speeds.
  • Implications of incorrect installation of accessories, work holding fixtures, tools and grinding wheel.
  • Implications of component not meeting specifications, e.g. poor finishes, uneven surface textures, incorrect size.
  • Implications and consequences of situations such as, e.g. damaged or faulty equipment, allowing faulty processes to continue, delaying reports about changing conditions.
  • Implications of not meeting grinding time limits.

    Procedures and techniques:
  • Set up procedures for Internal and external grinding.
  • Internal and external grinding operations and procedures covered by this unit standard.
  • Measuring procedures.
  • Machine cleaning procedures.
  • Recording and reporting procedures.

    Regulations, legislation, agreements, policies:
  • Applicable safety, health and environmental protection legislation and standards.
  • Applicable quality standards and specifications.
  • Applicable underlying scientific concepts.

    Theory - rules, laws, principles:
  • Applicable machining theory covering speeds and feeds material properties and the underlying principles of internal and external grinding.
  • Applicable mathematical concepts including geometry, trigonometry and algebra.

    Relationships, systems:
  • The relationship of the drawing to the ground component. 
    		•

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    \N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identifying and solving problems in which responses display that responsible decisions using critical and creative thinking have been made when:
  • Recognise problems while grinding components and respond appropriately. 
    		•

    UNIT STANDARD CCFO WORKING 
    Working effectively with others as a member of a team, group, organisation, and community. 

    UNIT STANDARD CCFO ORGANISING 
    Organising and managing oneself and one's activities responsibly and effectively when:
  • Plan sequence of operations based on job requirements and set up machine appropriately. 
    		•

    UNIT STANDARD CCFO COLLECTING 
    Collecting, analysing, organising and critically evaluating information to better understand and explain:
  • Collect sensory and numeric information from the process and the machined component.
  • Classify the information and identify deviations from the norm. 
    		•

    UNIT STANDARD CCFO COMMUNICATING 
    Communicating effectively using visual, mathematical and/or language skills in the modes of oral and/or written persuasion when:
  • Record outputs, incidents, measurements.
  • Report incidents and conditions.
  • Respond to questions or requests for more details. 
    		•

    UNIT STANDARD CCFO SCIENCE 
    Using science and technology effectively and critically, showing responsibility towards the environment and health of others when:
  • Understand and explain grinding theory and mathematical and scientific concepts underpinning the machining operation. 
    		•

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrating an understanding of the world as a set of related systems by recognising that problem-solving contexts do not exist in isolation when:
  • The relationship of the drawing to the final machined component.
  • The purpose and uses of the ground component. 
    		•

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    This unit standard replaces unit standard 13317, "Produce complex components by performing internal and external grinding operations", Level 4, 12 credits. 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  91925   Further Education and Training Certificate: Mechanical Engineering: Machining and Tooling  Level 4  NQF Level 04  Passed the End Date -
    Status was "Reregistered"     		 2023-06-30  As per Learning Programmes recorded against this Qual 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    NONE 


    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.