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: 

Identify, interpret and produce working mechanical drawings 
SAQA US ID UNIT STANDARD TITLE
14495  Identify, interpret and produce working mechanical drawings 
ORIGINATOR
SGB Civil Engineering Construction 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 12 - Physical Planning and Construction Physical Planning, Design and Management 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 4  NQF Level 04 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "Reregistered" 
2008-10-20  2009-04-08  SAQA 0160/05 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2010-04-08   2013-04-08  

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 is replaced by: 
US ID Unit Standard Title Pre-2009 NQF Level NQF Level Credits Replacement Status
262944  Interpret, read and produce mechanical drawings  Level 4  NQF Level 04  12  Complete 

PURPOSE OF THE UNIT STANDARD 
This unit standard provides a broad introduction to the production and understanding of working mechanical drawings. It is the starting point for a learner in this sector. The focus is knowledge, skills, values and attitudes in relation to the learner`s own context and experience of the world of work.

The qualifying learner is capable of:
  • Demonstrating an understanding of conventional representation for mechanical draughting
  • Explaining and drawing cam profiles
  • Sectional drawings are described and drawn
  • Detailed drawings are described and primary views drawn
  • Describing and producing an assembly drawing 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
  • Learners accessing this unit standard will have demonstrated competence in mathematics, engineering science and technical drawing at NQF level 4 or equivalent.
  • Learners accessing this unit standard will have demonstrated competence in computer technology at Level 3 on the NQF or equivalent. 

  • UNIT STANDARD RANGE 
  • The primary views of an assembly drawing will include dimensioning, sectional as well as outside views, machining and surface texture symbols as well as ISO limits and fits and instruction notes, conventional representation of drilled and tapped holes as well as specially manufactured bolts and nuts.
  • Conventional representation will include a single spur gear, spur gears in mesh, screw threads and helical springs.
  • Cam profiles will include constant velocity, uniform acceleration, and retardation and simple harmonic motion.
  • Machining and surface texture symbols will include removal of material by machining, removal within a limit, removal between a high and low limit, production method, sample length, machining allowance, no machining, no machining with a limit and a method to avoid repeating a symbol.
  • Surface texture processes will include flame cut, saw, mill, ream, bore, turn, grind, polish and sand blast. 

  • Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Demonstrate an understanding of conventional representation for mechanical draughting 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. First and third angle orthographic projection are drawn within agreed time frames 

    ASSESSMENT CRITERION 2 
    2. Primary views of internal and external left and right hand square threads and helical springs are drawn within agreed time frames 

    SPECIFIC OUTCOME 2 
    Explain and draw cam profiles 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Cam profiles are described and explained in accordance with accepted definitions 

    ASSESSMENT CRITERION 2 
    2. Various types of cam profiles are drawn within agreed time frames 

    ASSESSMENT CRITERION 3 
    3. The displacement diagram is drawn within agreed time frames 

    ASSESSMENT CRITERION 4 
    4. Construction lines must be projected and not marked off with a compass 

    ASSESSMENT CRITERION 5 
    5. The shaft is shown as an outline and is hatched according to organisational requirements 

    SPECIFIC OUTCOME 3 
    Describe and draw sectional drawings 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Sectional drawings are described according to organisational and client requirements 

    ASSESSMENT CRITERION 2 
    2. Sectional drawings are drawn with full section, half section, cutting planes, partial section, revolved sections and removed sections 

    ASSESSMENT CRITERION 3 
    3. Machine parts are drawn with interpenetration curves and fillet radii 

    ASSESSMENT CRITERION 4 
    4. Instructional notes are included in the drawing 

    ASSESSMENT CRITERION 5 
    5. Machining and surface texture symbols are included in the drawing 

    ASSESSMENT CRITERION 6 
    6. Limits and fits are included in the drawing 

    SPECIFIC OUTCOME 4 
    Describe and draw primary views of detailed drawings 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Detailed drawings are described according to organisational requirements 

    ASSESSMENT CRITERION 2 
    2. Parts of an assembly drawing are dismantled according to organisational requirements 

    ASSESSMENT CRITERION 3 
    3. Dimensioning, sectional and outside views are included in the drawing 

    ASSESSMENT CRITERION 4 
    4. Machining and surface texture symbols as well as ISO limits and fits and instruction notes are included in the drawing 

    ASSESSMENT CRITERION 5 
    5. Conventional representation of drilled and tapped holes as well as bolts and nuts are included in the drawing 

    SPECIFIC OUTCOME 5 
    Describe and produce an assembly drawing 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. The components given in a detailed drawing are correctly assembled. 

    ASSESSMENT CRITERION 2 
    2. Primary views of the assembly are drawn according to scale 

    ASSESSMENT CRITERION 3 
    3. Item numbers and parts lists are included in the drawing 

    ASSESSMENT CRITERION 4 
    4. Sectional or outside views are shown on the drawing 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
    The relevant Education, Training, Quality Assurance Body (ETQA) will accredit providers offering learning towards this standard, and register assessors. 

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
  • A general understanding of mechanical draughting in the engineering industry.
  • A general understanding of convention of representation in mechanical draughting.
  • An all round understanding of cam profiles.
  • A comprehensive understanding of sectional, detailed and assembly drawings. 


  • Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems pertaining to mechanical drawings 

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as a member of a team to ensure that mechanical draughting is completed according to requirements 

    UNIT STANDARD CCFO ORGANISING 
    Organise oneself and one`s activities so that the learner would foster an appreciation for mechanical draughting 

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information pertaining to reproducing of mechanical drawings 

    UNIT STANDARD CCFO CONTRIBUTING 
    Contribute to the full personal development of each learner and the social and economic development of the society at large, by making it the underlying intention of any programme of learning to make an individual aware of the importance of developing entrepreneurial opportunities through the correct and accurate production of working mechanical drawings 

    UNIT STANDARD NOTES 
    This unit standard has been replaced by unit standard 262944, which is "Interpret, read and produce mechanical drawings", 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
    Elective  50018   Further Education and Training Certificate: Computer Aided Drawing Office Practice  Level 4  NQF Level 04  Passed the End Date -
    Status was "Registered" 
    2009-02-09  Was CETA until Last Date for Achievement 
    Elective  23773   National Certificate: Computer Aided Drawing Office Practice  Level 4  NQF Level 04  Passed the End Date -
    Status was "Registered" 
    2006-02-09  Was CETA until Last Date for Achievement 
    Elective  50245   National Certificate: Maintenance Coordination  Level 5  Level TBA: Pre-2009 was L5  Passed the End Date -
    Status was "Registered" 
    2010-11-11  TETA 


    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.
     
    1. AFRICAN ACAD.FOR COM.ASSIS.ENGINEERING 



    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.