Application
This unit of competency defines the skills and knowledge required to manufacture patterns for all types of cast gears, conveyor screws and marine propellers using a full range of materials.
Gear patterns may be segmented or any other method used to minimise timber shrinkage or warpage to achieve the required strength.
Conveyor and marine screws may be built up using predetermined thicknessed timber, either over a mandrel or a layout. Patterns may be set up on a joint board or plated for ease of moulding.
Where the assembly of plated patterns is required unit MEM04012 Assemble plated patterns should also be selected.
Where the selection and use of precision measurement is required unit MEM12003 Perform precision mechanical measurement should also be selected.
No licensing, legislative or certification requirements apply to this unit at the time of publication.
Band: A
Unit Weight: 4
Elements and Performance Criteria
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. | ||
1 | Determine job requirements | 1.1 | Follow standard operating procedures (SOPs) |
1.2 | Comply with work health and safety (WHS) requirements at all times | ||
1.3 | Use appropriate personal protective equipment (PPE) in accordance with SOPs | ||
1.4 | Identify job requirements from specifications, drawings, job sheets or work instructions | ||
2 | Lay out pattern | 2.1 | Select appropriate material to specifications |
2.2 | Apply moulding, cast techniques and foundry processes in determining the type of pattern required | ||
2.3 | Calculate pattern parameters | ||
2.4 | Lay out pattern showing tapers, machining allowances, core prints and method of construction to specification | ||
2.5 | Develop and manufacture jigs and fixtures to aid the manufacture of the pattern form as required | ||
3 | Manufacture pattern | 3.1 | Mark out material and develop construction to meet specifications |
3.2 | Produce pattern or pattern component parts to size and shape using appropriate hand and hand held power tools, techniques and procedures | ||
3.3 | Check pattern or pattern component parts for compliance to specifications | ||
3.4 | Join and fix pattern component parts according to specifications | ||
3.5 | Mark, colour-code and/or tag pattern in compliance with specifications or procedures | ||
Foundation Skills
This section describes those required skills (reading, writing, oral communication and numeracy) that are essential to workplace performance in this unit of competency.
Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.
Range Statement
This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. | |
Material includes one (1) or more of the following: | hardwood softwood epoxy resins composites |
Pattern parameters include one (1) or more of the following: | pitch circles pressure angles tooth form left and right hand flight helix pitch axial dimensions angles tapers clearances contraction allowances |
Competency Field
Casting and moulding