Course title
Design of Machine Elements

YOSHIHARA Shouichirou
Course description
In manufacturing, there is a great deal of responsibility for the production of safe and secure products when they are used. Therefore, from the viewpoint of making products that do not break and that can be used safely, we learn the guidelines and methods of design for manufacturing such products. Specifically, many mechanical elements are used in a structure, and if even one of these mechanical elements breaks, the object cannot be used.
Purpose of class
The objectives of this course are as follows
1. to be able to take into account a number of factors when designing, such as ease of construction, ease of use, safety and security.
2.To be able to calculate the design based on the material mechanics.
Goals and objectives
  1. To be able to calculate stresses, taking into account the safety factors and allowable stresses required for design.
  2. To be able to refer to the factors and parameters required for the design from the necessary JIS and other sources and to be able to calculate them using those sources.
  3. To design with function and performance in mind.
Class schedule

Class schedule HW assignments (Including preparation and review of the class.) Amount of Time Required
1. Basics of machine design
(Definition of machine, machine elements, machine design procedures, service life)
Chapter 1, Section 1.1. 190minutes
2. Mechanical materials and processing
(Selection of machine materials, utility materials, non-ferrous metals, non-metals, processing methods)
Chapter 1, sections 1.2 to 1.5 190minutes
3. Review of mechanics of materials
(Stress and strain)
This is a handout. 190minutes
4. Review of mechanics of materials
(Bending and torsion of beams)
This is a handout. 190minutes
5. Fastening parts
(Screws, rivets, welded joints)
Contents of Chapter 2 190minutes
6. Shaft
(Shaft, shaft joint)
Contents of Chapter 3 190minutes
7. Mid-term examinations and explanations Review of the contents of the first six sessions, preparation for the examinations and revision of the examinations. 190minutes
8. Bearings
(Plain bearings, hydrostatic bearings)
Contents of Chapter 4 190minutes
9. Gears
(Types of gears, gear design)
Contents of Chapter 5 190minutes
10. Winding device
(Belt and chain)
Contents of Chapter 6 190minutes
11. Spring Chapter 7, Section 7.1. 190minutes
12. Flywheel Chapter 7, Section 7.2. 190minutes
13. ブレーキ装置 Contents of Chapter 8 190minutes
14. Final exam and explanations Review of the contents of the 8th to 13th sessions, preparation for the examinations and revision of the examinations. 190minutes
Total. - - 2660minutes
Relationship between 'Goals and Objectives' and 'Course Outcomes'

Report Mid-term examinations Final examinations Total.
1. 10% 15% 15% 40%
2. 5% 15% 15% 35%
3. 5% 10% 10% 25%
Total. 20% 40% 40% -
Evaluation method and criteria
There will be a report (20 points), a mid-term examination (40 points) and a final examination (40 points), for a total of 100 points. The report will be divided into two parts.
Of the 100 points, 60 points will be considered a passing grade. The criterion for the level of passing is that the student is able to refer to the parameters required for design and is able to calculate stresses. In addition, the student should be able to propose a design for the required materials based on function and performance.
Textbooks and reference materials
The following textbooks are planned.
Kawakita and Yabe, Mechanical Engineering Series 7: Machine Design for Students, Asakura Publishing Co. in Japanese
As a reference book, books on mechanical drafting are listed, but students must bring them to class.
Office hours and How to contact professors for questions
  • Available on Wednesdays from 12:30 to 13:00
Non-regionally-oriented course
Development of social and professional independence
  • Course that cultivates an ability for utilizing knowledge
Active-learning course
Most classes are interactive
Course by professor with work experience
Work experience Work experience and relevance to the course content if applicable
Applicable He was involved in the design of certain parts of an automatic two-wheeler.
Education related SDGs:the Sustainable Development Goals
Last modified : Fri Mar 18 22:05:21 JST 2022