Reference no: EM132767964
MECH215 Mechanical Engineering Design - University of Wollongong
Geared Drive System Design (rev 1)
This assignment is individually assessed. You are required to design various elements of an overall geared drive and to produce the resulting Creo Parametric generated 3D models and associated engineering drawings. You must record your design work contemporaneously on design sheets and maintain your individual reflective journal (diary with reflections) using the templates supplied.
The work is divided into discrete tasks and you will submit completed tasks progressively for review and assessment. Prior to commencing each task you will need to complete the associated topic learning activities utilising the study guides and quizzes provided for that purpose.
You will work in a team of 2 people, with clearly defined responsibilities for particular parts of the design. You will maintain an interest in the overall design.
OVERVIEW
Purpose:
The purpose of this assignment is to provide you with the opportunity to undertake typical mechanical design tasks within the context of a mechanical system. You will be supported in this by the topics you study as part of this subject.
Overall Task:
The design of a geared drive system is required. The system is a motor-driven geared drive incorporating a single-stage reduction gearbox. It is to drive a belt conveyor. Some prescribed aspects of the design problem as stated and the design provided are not necessarily relevant to a practical case.
You are supplied with a Project Folder that you download from eLearning, containing Creo Parametric 5.0 part models for the upper and lower gear cases as well as the following parts:
Input (1st motion) shaft assembly
- Shaft with integral pinion gear
- Bearings and associated components
- Seal
- Endcaps
Output (2nd motion) shaft assembly
- Gear (without bore features)
Your team will be provided with specific design parameters for the drive. You will need to modify the parts models provided to match with the parameters specified.
Tasks:
You will be required to complete the design of a geared drive that will be used to connect an electric motor (energy source) to a load. To do this you will need to design or select a:
0. Induction motor suitable for the task, then considering the motor characteristics and the load:
1. Output shaft assembly including the shaft, bearing arrangement and selection; endcap and screws, and seal based on the nominal size of the supplied gear bore; modifying the upper and lower gear-casings to accommodate your design.
2. Coupling for the output shaft.
3. Conduct both an analytical and numerical (FEA) examination of the stresses induced into the input and the output shaft making suitable assumptions and geometry simplifications.
4. Gear-casing joint design including dowels; bearing housing bolts and flange bolts.
5. Baseplate that allows for the relative location and support of the gearbox, motor and connecting flexible drive.
6. Hold-down bolts for the gearbox and for the motor.
7. Flexible drive (belt or chain) connecting the motor to the input shaft of the gearbox, modifying the input shaft.
8. Tensioning device for the flexible element, incorporating a bespoke spring.
9. Produce an assembly model.
10. Produce General Arrangement, Assembly and Part drawings and assembly drawing that will enable the manufacture of the geared drive.
Tasks need to be allocated amongst the team members so that all topics are covered by each team member and responsibility is taken for specific parts.
Attachment:- Mechanical Engineering Design.rar