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Project Group 7 - 2024
Part 1
Design the actuation of a hydraulic press. Data:
- 800 t force;
- active stroke of 600 mm;
- maximum force acting on 200 mm, with an average force of 60 t for the remaining of the active stroke;
- tact - 12 strokes a minute;
Design will involve calculations and selection of the components of the entire hydraulic circuit, including electrical motor(s) to drive the pump(s), hydraulic diagram and sequence of control commands.
Part 2
Design a wobble plate axial pistons motor for 240 bar, 800 Nm and 2000 rpm
The wobble plate is fixed on the motor shaft and rotates. The block and pistons are not rotating.
Design will involve hydraulic and mechanical calculations, down to CAD models and drawings of the motor/components/distribution system, selection of bearings and design of hydrostatic bearings, seals, materials and tolerances.
A complete and sound solution should attempt to include the following and the points referred in the project rubric:
Part 1
– Presentation of multiple potential solutions with a pertinent critical analysis of each of them;
- Minimisation of energy used, reduction of pulsations in the circuit, reduction of costs of the actuation;
- Automation Studio simulation and validation of the calculations, including energy losses and thermal analysis;
- Automation of the circuit through relays and/or PLC. Consideration of sensors, commands and external conditions.
- Thermal analysis and control;
- Consideration of safety operation of the circuit and standard operation procedure (SOP)
Part 2:
- Calculation and minimization of non-uniformity of output torque;
- Mathematical modeling of the output torque of the motor considering friction and losses;
- Minimization of cost of the motor by using an appropriate balance between tolerances and losses;
- FEA simulation of the pressure-loaded parts;