- MEM05054A - Write basic NC/CNC programs for thermal cutting machines
MEM05054A
Write basic NC/CNC programs for thermal cutting machines
Application
This unit extends to writing a program to describe simple thermal cutting machine operations including cutting paths using appropriate software for machines which may incorporate single or multiple nozzles and material loaders. The program may use common M and G codes but does not include the programming of advanced operations using canned cycles and sub-routines. Programs are trialled and edited as necessary to adjust operation of the machine. Technical difficulties are resolved in consultation with appropriate technical advisers. Work would be undertaken autonomously using predetermined standards of quality. For basic programming of other computer controlled machines, see Unit MEM07018C (Write basic NC/CNC programs). Band: This unit has dual status and is to be regarded as both a specialisation band A unit and Specialisation band B unit for progression to C7 (AQF level IV). Unit Weight: 4 |
Prerequisites
Path 1 | Perform manual heating and thermal cutting | |
Perform advanced manual thermal cutting, gouging and shaping | ||
Perform automated thermal cutting | ||
Set and edit computer controlled thermal cutting machines | ||
Interpret technical drawing | ||
Perform engineering measurements | ||
Use hand tools |
Elements and Performance Criteria
ELEMENT | PERFORMANCE CRITERIA |
1. Identify basic NC/CNC machine program elements | 1.1. Appropriate program elements are selected for machine controller. |
2. Write basic NC/CNC machine program | 2.1. Engineering drawings are understood and interpreted to define basic machine function and cutting path geometry. 2.2. Coordinates are calculated for cutting path 2.3. Program is written in standard code format in accordance with standard operating procedures. |
3. Write NC/CNC operation sheet | 3.1. Operation sheets are produced to specification in accordance with standard operating procedures. |
4. Trial program | 4.1. Machine is operated in manual mode to test and prove program as required. 4.2. Program is edited if necessary to adjust operation as required. 4.3. Components are checked for conformance to specification as required. |
Required Skills
Required skills |
Look for evidence that confirms skills in: reading, interpreting and following information on written job instructions, specifications, standard operating procedures, charts, lists, drawings and other applicable reference documents planning and sequencing operations checking and clarifying task related information calculating coordinates of all relevant points on the part or product to be cut or welded writing NC/CNC program in standard code format producing NC/CNC operation sheet(s) operating NC/CNC machine safely in manual mode editing NC/CNC program checking parts or products for conformance to specifications |
Required knowledge |
Look for evidence that confirms knowledge of: the elements of a basic NC/CNC program the function of elements in controlling the operation of an NC/ CNC machine type(s) of NC/CNC thermal cutting and welding machine and their applications thermal cutting operations controlled by program the cutting path(s) to be followed when cutting a part or product the reasons for selecting cutting path(s) and sequence of operations the zero point of the NC/CNC machine standard codes used in the writing of NC/CNC programs applications of standard codes in NC/CNC programming procedures for writing NC/CNC programs in standard code format procedures for completing NC/CNC operation sheets the information to be included in NC/CNC operation sheets procedures for manual operation of the NC/CNC machine reasons for testing and proving the NC/CNC program procedures for editing the NC/CNC program via the machine controller the effects of editing on the operation of the NC/CNC machine and the part or product to be cut the measuring equipment/techniques used to check for conformance to specification hazards and control measures associated with numerical and computer controlled machines, including housekeeping safe work practices and procedures |
Evidence Required
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 basic NC/CNC programming. 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 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. |
Context of and specific resources for assessment | This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. 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. This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with performing basic NC/CNC programming or other units requiring the exercise of the skills and knowledge covered by this unit. |
Method of assessment | 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 |
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. | |
Basic | NC or CNC thermal cutting machines which do not require programming using canned cycles and sub-routines. |
Sectors
Unit sector |
Competency Field
Fabrication |
Employability Skills
This unit contains employability skills. |
Licensing Information
Not Applicable