Mechanical Design Ⅰ

Course Information

College	Toyama College	Year	2024
Course Title	Mechanical Design Ⅰ
Course Code	0072	Course Category	Specialized / Compulsory
Class Format	Lecture	Credits	School Credit: 2
Department	Department of Mechanical Engineering	Student Grade	3rd
Term	Year-round	Classes per Week	2
Textbook and/or Teaching Materials	機構学　森田鈞　サイエンス社 機械設計2（実教出版）
Instructor	Sase Naoki

Course Objectives

At the completion of this course, students will be able to
1. Undersutand the movement of the link mechanism
2. Understand the concept of instantaneous center in mechanisms
3. Calculate the speed and acceleration of the parts in mechanisms
4. Understand mechanisms of friction gearing systems
5. Understand tooth profiles of involute gears and the aim
6. Understand mechanisms of planetary gear sysytems

Rubric

	Ideal Level of Achievement (Very Good)	Standard Level of Achievement (Good)	Unacceptable Level of Achievement (Fail)
Evaluation 1	Can model the structure of machines and understand the movement.	Can imagine the movement of the link mechanism.	Can't imagine the movement of the link mechanism.
Evaluation 2	Can find the instantaneous centers in complex mechanisms.	Can find the instantaneous centers in simple mechanisms.	Can't understand the concept of instantaneous center in mechanisms.
Evaluation 3	Can calculate the speed and acceleration of the parts in comlex mechanisms.	Can calculate the speed and acceleration of the parts in simple mechanisms.	Can't calculate the speed and acceleration of the parts in mechanisms at all.
Evaluation 4	Can understand mechanisms of complex friction gearing systems, and calculate the transfer ratio and its change.	Can understand mechanisms of basic friction gearing systems and calculate the transfer ratio.	Can't understand mechanisms of friction gearing systems.
Evaluation 5	Can understand tooth profiles and features of involute gears.	Can understand tooth profiles of involute gears and the aim.	Can't understand tooth profiles of involute gears.
Evaluation 6	Can understand mechanisms of complex planetary gear sysytems and calculate the transfer ratio.	Can understand mechanisms of basic planetary gear sysytems.	Can't understand mechanisms of planetary gear sysytems.

Assigned Department Objectives

Learning and Educational Objectives of the “General Engineering” A-2 （設計・システム，情報・論理，材料・バイオ，力学，社会技術に関する基礎知識を理解し，簡単に説明することができる。）

Teaching Method

Outline:

In machines, various mechanisms and mechanical elements are used in order to achieve the desired movement of the machine. In this course students will understand the motion of each element and the transmission of the movement, and recognize their features through an understanding of the course materials.

Style:

In the first half of the class some of the contents are explained in a lecture form, following by exercise problems that will be solved in stages.

Notice:

Be interested in and conscious of the structures, mechanisms and machine elements of machines used in your everyday life.
Can take makeup exam in need aid up to maximum of 60 points.

Characteristics of Class / Division in Learning

Applicable to Remote Class

Course Plan

			Theme	Goals
1st Semester
	1st Quarter
		1st	Machines and motion	Can model mechanisms.
		2nd	What are the instantaneous centers?	Can understand the concept of the instantaneous center.
		3rd	Theorem of three instantaneous centers	Can understand the theorem.
		4th	Instantaneous centers in mechanisms	Can find the instantaneous centers in mechanisms.
		5th	The motion velocity of positions in mechanisms.	Can calculate the motion velocity using the instantaneous centers.
		6th	Calculate the velocity by the connecting link method.	Can calculate the motion velocity using the connecing link method.
		7th	Calculate the velocity by the component method.	Can calculate the motion velocity using the component method.
		8th	Calculate the velocity by the image method.	Can calculate the motion velocity using the image method.
	2nd Quarter
		9th	Midterm examination
		10th	Explanation of the midterm exam
		11th	Motion acceleration of rotary movement	Can calculate the acceleration of a rotating object.
		12th	Coriolis acceleration	Can calculate the Coriolis acceleration applied to a object.
		13th	Acceleration in mechanisms I	Can calculate the acceleration in simple mechanisms.
		14th	Acceleration in mechanisms II	Can calculate the acceleration in various mechanisms.
		15th	Term-end examination
		16th	Explanation of the term-end exam
2nd Semester
	3rd Quarter
		1st	Rolling contact mechanisms	Necessary conditions for rolling contact
		2nd	Circular cone rolling contact mechanisms	Transfer ratio and profile of circular cone rolling contact
		3rd	Variable speed friction gearing	Change in transfer ratio of friction gearing in continuously variable speed systems
		4th	Required shape in toothed wheel	Necessary conditions for constant transfer ration in tooth gear systems
		5th	Slipping velocity on tooth	Determin of slidding speed on tooth
		6th	Tooth profile	Understand of tooth profile
		7th	Involute gear profile	Understand of tooth profile of involute gears
		8th	Change in center distance of gears	Understand the change in transfer ratio with center distance change on involute gear systems
	4th Quarter
		9th	Midterm examination
		10th	Explanation of the midterm exam
		11th	Rack gear and internal gear	Tooth profile of rack gear and internal gear
		12th	Undercut and shifted gear	Understand the tooth undercut and shifted gear
		13th	Gear train	Transfer ratio of gear trains
		14th	Planetary gear systems	Understand the mechanisms of planetary gear systems
		15th	Term-end examination
		16th	Explanation of the term-end exam

Evaluation Method and Weight (%)

	Examination(Interim and final exams)	Presentation	Mutual Evaluations between students	Behavior	Portfolio	Other	Total
Subtotal	90	10	0	0	0	0	100
Basic Ability	0	0	0	0	0	0	0
Technical Ability	90	10	0	0	0	0	100
Interdisciplinary Ability	0	0	0	0	0	0	0