Engineering - Exam Papers - HL - Project - 2007
There are many examples of machines which aid
training in various sporting activities.
Design a simple table tennis serving machine, to the
general specifications outlined below, which will
eject a ball periodically to a practicing player.
The machine should:
- Be table mounted;
- Have a ball container with the capacity for at
least 10 practice balls;
- Incorporate a mechanism to eject a ball
- Include an electronic indicator to signal when
the feed container is empty.
Presentation of the completed machine should ensure
- All main operating features are clearly visible
- The longest dimension of the model does not
exceed 300mm (NOT INCLUDING THE BALL CONTAINER).
- Electric power does not exceed 9 volts.
- Design Process (40 marks)
A design folio must be compiled which will detail
- Analysis of the given brief and investigation of
- Criteria for selection of your own individual
solution and production drawings/plans;
- Testing and evaluation of your design solution;
- Special instructions, if required, regarding the
testing of solution by examiner.
Note: Computer-aided design (CAD) should be
used where possible.
- Design Realisation (110 marks)
Using appropriate materials, make the machine
according to your own individual design plans.
Computer numerical control (CNC) technology should
be used, where possible, to support manufacture. You
are required to manufacture and assemble all the
parts, subject to the following guidelines:
- Standard components may be used to support the.
assembly and interconnection of various pans;
- Re-cycling will be acceptable only in cases
where a complex part cannot readily be made in the school. Unnecessary
recycling will result in lost marks;
- Bought-in electronic solutions will result in
- Adhesives, if used, should be applied sparingly.
Marks are awarded as shown in marking scheme
- Project presentation
Your completed project consisting of a machine and
design folio, both clearly identified with your
examination number, must be available to the
Marks are awarded for quality of presentation and
finished appearance of both machine and folio.