Students in this course learn the basic rules of mechanical drawing and the basics of machine elements and mechanical drawing for expressing such machine and elements as the foundation of a series of design courses. They also learn the basics of drawing with CAD, and deepen their knowledge about machine drawing, and working with 3D printers, machine tools, and the like, in order to acquire knowledge and skills, which will be a foundation of overall design courses.
Dimensional tolerances, Geometric tolerance, Fitting and related standards, Basics of drafting tools and CAD software. Basics of machine elements such as fastening element, shaft element, transmission element.
By the end of this course, students will be able to:
1. Explain the basics of Mechanical Engineering Design and drawing through hand-drawing, and 2D, 3D-CAD of various machine elements. Understand functions, mechanics, work methods, materials of machine elements and manufacturing method of mechanical components.
2. Understand how to use drafting tools and CAD software. Basic rules such as dimensional tolerances, geometric tolerance, fitting and related standards can be explained through practice drafting trace of basic machine elements such as fastening element, shaft element, transmission element.
This subject corresponds to the learning objective of "1. [professional ability] basic expertise".
Machine Drawing, Machine Elements
|Intercultural skills||Communication skills||Specialist skills||Critical thinking skills||Practical and/or problem-solving skills|
Students will be split into 3 groups, and will work on 3 large challenges, one topic every 2 weeks. Each week, the instructor will lecture on the function of machine elements, writing drawings, and various suggestions. On that basis, students will use drafters and CAD software in the second half to do practical work on mechanical drawings. Students will generally complete them during class time, and revise them appropriately based on instructor evaluations. These topics will be counted towards grade evaluations.
|Course schedule||Required learning|
|Class 1||Third angle projection.||Draw a third angle projection of simple three dimensional shapes.|
|Class 2||Fitting, geometrical tolerance, dimensional tolerance.||Learn fundamental rules for mechanical engineering drawing based on JIS standard.|
|Class 3||Learn drawing method using CAD (Computer aided drafting).||Examine for basic rules for machine elements and mechanical engineering drawing.|
|Class 4||Fastening elements||Learn fastening elements such as screw and nut.|
|Class 5||Drawing for screw parts.||Make a mechanical engineering drawing of screw and nut with a drafter.|
|Class 6||Shaft element||Learn dimensional tolerance for drawing of shaft.|
|Class 7||Drawing of a shaft||Draw a mechanical engineering drawing of the tapered shaft with complex shape by a drafter.|
|Class 8||Sealing elements||Learn the function, form, material, and surface roughness on seal elements.|
|Class 9||Packing gland||Draw a mechanical engineering drawing of a packing gland by 2D-CAD.|
|Class 10||Transfer elements||Learn functions, processing method, and geometrical tolerance of a gear as power transmission device.|
|Class 11||Spur gear||Draw a mechanical engineering drawing of a spur gear by 2D-CAD.|
|Class 12||Power transmission elements||Learn function of a pulley.|
|Class 13||Technical drawing of a power transmission device||Learn drawing method of 3D-CAD. And draw a mechanical engineering drawing of a pulley by 3D-CAD.|
|Class 14||Rapid prototyping||Learn relationships and cooperation between 3D-CAD and 3D printer and machining tools.|
|Class 15||Technical drawing of a power transmission device||Draw an assembly drawing of crank mechanism by 3D-CAD.|
Basic mechanical design and drafting (in Japanese): Tsukada Tadao, Mathematical Engineering, Inc.
An auxiliary text (distribution)
Download from OCW-i. Printed materials will be provided if needed.
Class participation, Mechanical drawing practice, and Submission of assignments: 60%
Final exam: 40%