shaft design features

-shaft design feature(short explanations of the importance of the following features and how to find them.)
1.keyways. 2.retaining rings. 3.bearings. 4.diameter. 5.material choice.

– "shigley" book may help

2505ENG Main project: Design of a gearbox

Final report: what should be included?
The project report is a formal technical report which should be written in a professional way. Based on your design activities, the following contents should be included in your final report (team report). The submission is to the library and due by October 31, 2014, Friday, 4pm. Note: this is only a general guideline as per the request from some students. You may wish to adjust the sequence and presentation formats. But the report should be clear and readable, arranged in a logic way. The major contents should be clearly typed and printed. Any handwriting, if it’s necessary, should be put into appendix. All calculations and designs should follow the SI system (metric units should be used). If you are using a method other than that provided in the lecture notes and the textbook, please provide the reference source. 1. Introduction: background of the project, tasks, your project team, roles for each member. It is important to clearly list the contribution from each member, in terms of the design work and also the drafting of the final report (which section or pages? Percentage?). If a member does not make enough contribution to the project, it should be pointed out in this section. 2. Conceptual design and general configuration. This includes the overall layout of the gearbox, determination of the number of teeth for each gear, shaft speed and torque at each stage, key parameters, etc. Justification and safety assessment for some parameters can be put into the following sections. 3. Design of gears and the strength assessment. Types of gears, key sizes and parameters, assessment of the bending strength and contact strength. Determination of the factors involved, material selection, etc., should be elaborated. Calculation results as well as decision making should be clearly listed. If you have developed a program (such as by using matlab) for the calculation, then the program code should be given as appendix, and the theory or method used should be given and explained. 4. Design of shafts and strength assessment. This should be a revised and integrated version from your individual report. You should make necessary corrections if any errors or issues have been realized in the previous version Double check the common problems which has been highlighted in the workshop. Explain the important geometrical features in your shaft layout and the functions. Calculation and design of the key /keyway, and design for any other features /accessories, should also be included. 5. Calculation and selection of bearings. Again this should be a revised and integrated version from your individual report. 6. Integration of the components and design of the gearbox assembly. There should be considerations for the assembly process, gearbox casing and joints,

lubrication and sealing, necessary fittings and tolerance. Note that a strength assessment of the casing is NOT required in this project. 7. A discussion of the design project, assumptions and simplifications used, issues identified, existing problems and further work for improvement needed, suggestions, etc. Note: if you have employed some features which are different with the project requirements, you should list it here and provide justifications or explanations, such as, but not limited to, you used spur gear rather than helical gear, etc. 8. Engineering drawings, for the assembly and for the major elements. Note: your drawing provided in the report should be big and clear enough for checking. If necessary, you may need to print it in A3 size papers, especially for the assembly drawing. You will lose mark if the drawing is too poor and not readable. Adequate and complete dimensions should be in the drawing. 9. Any other content that you believe should be part of the design project can be included as appendices. 10. Although we don’t have a strict page limitation, a guideline is to be within 40 pages.

Your report will be graded according to: 1) completeness, 2) ease of assembly, 3) manufacturability, 4) drawing quality, 5) technical correctness, and 6) professional quality of report. These items have been listed in the project description.