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8-1/2

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8-1/2

Technical areas (TCA)

8-1 

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6-1 | 6-2 | 6-3 | 6-4

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8-5 |  8-6/7 | 8-8 | 8-9

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6-1 | 6-2 | 6-3

7-1 | 7-2 | 7-3

8-1/2 | 8-3


Construct a specified product using CNC machines CMT 8-3

Construct a specified product requires students to implement procedures and tests to make specified products using Computer Numerical Controlled (CNC) machines.

Learning objective: CMT 8-3

Students will:

  • implement complex procedures to make a specified product using a Computer Numerical Controlled (CNC) machine.

Indicators

  • Integrates the limits of a CNC machine into a graphic representation of the desired product in a computer design setting that demonstrates an understanding of CNC programming language.
  • Sets up and calibrates a CNC machine to software and manufacturer requirements.
  • Operates a CNC machine to make an product in compliance with relevant health and safety regulations.
  • Evaluates a CNC machine made product against its graphic representation.
  • Shows independence and accuracy in undertaking complex procedures to make specified products using CNC machines.
  • Undertakes complex procedures in a manner that economises time, effort, tooling, and materials when implementing complex procedures to make a specified product using CNC machines.

Progression

Initially students learn to perform a sequence of techniques and tests to make specified products using CNC machines that meet specifications. Students should progress to performing complex procedures, which incorporate the use of CNC machines to make specified products that meets specifications.

Teacher guidance

To support students to implement complex procedures to make a specified product using a Computer Numerical Controlled (CNC) machine at level 8, teachers could:

  • support students to be aware of the capability of a CNC machine(s) including its limits
  • support students to develop graphic representations of specified products in a computer design setting
  • support students to develop an understanding of CNC programming language
  • support students to develop skills in calibrating CNC machines to software and manufacturer requirements
  • provide students with an opportunity to discuss what is meant by ‘complex procedures’ in relationship to CNC machines
  • support students to undertake evaluative tests to demonstrate that specified products meet specifications
  • ensure students have an appropriate environment, to apply relevant health and work regulations when working with CNC machines
  • support students to schedule and practice a range of complex procedures when making specified products. This may be through completing a range of individual products and/or projects/activities.

Contexts for teaching and learning

  • There are several approaches that teachers may take when planning to use this learning objective. Students could be given the specifications for a variety of styles of outcomes from which they choose one style. All students could develop the same style, or they could choose one of the alternatives. Note where students have chosen the same style ensure that the previous set up has been cleared from the CNC machine.
  • Alternatively, students might have fully established the specifications for their product(s) in prior technological practice, and are ready to make them.

Regardless of the approach taken before students begin to make their product, ensure that the product allows the student to demonstrate an understanding of the capabilities and limitations of the software and embroidery machine and that the students:

  • each have a set of specifications for the product they are making and its material requirements
  • have an understanding of the underlying capabilities and limitations of the software to interpret a design and translate this into the language used by the machine. (Students need to understand what the programming is attempting to achieve, but do not need to know how the programming works.)
  • know the codes of practice, including safety requirements, for the specific machine they are using
  • know the accepted codes of practice for the product’s design
  • know the testing that is required to complete the product to specifications and a high standard
  • can set up and choose the appropriate output parameters of the machine, for example, fine or coarse resolution/finish
  • have an understanding of the requirements demanded by different materials, for example, cutting speeds and feeds, different stitch types.

Literacy considerations

While this is an implementation standard, students will be required to record the development process to demonstrate their understanding of modifications made, including how the computer interprets and communicates this information to the machine. This could include:

  • the design and graphic representation
  • screenshots taken during development
  • evaluation of the final product
  • an annotated sample showing improvements in the quality of the outcome resulting from design changes you made using the software, altering tension/machine speed, or using different materials. 

Resources to support student achievement

The following websites are cited in the assessment resources and provide a basis for teacher and student exploration:

Assessment for qualifications

The following achievement standard could assess learning outcomes from this learning objective:

  • AS91622 Construction and mechanical technologies 3.22: Implement complex procedures to make a specified product using a Computer Numerical Controlled (CNC) machine.

Key messages from the standard

Specified product refers to a product with its associated specifications. The specified product requires an understanding of CNC programming to support the application of CNC machining in its development. The specified product may be a model or a component part of a larger outcome. The specifications are of sufficient rigour to allow the student to meet the standard. The specifications need to be agreed prior to the product being made. They may be teacher-given or developed in negotiation with the student. 

Computer design setting refers to the combination of software and hardware necessary to communicate numerical control data to a Computer Numerical Controlled (CNC) machine. 

Graphic representation is the final design before machining and must be of sufficient rigour to allow the student to meet the standard.

Last updated June 8, 2018



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