Curriculum subject

Machine Elements

Subject
Subject code	MME291
Subject name	Machine Elements
Credit points	3 ECTS
Grading method	Grade prelim
Subject program

Curriculum subject
Curriculum	2019 TT
Study year	2
Semester	Spring semester
Subject type	Mandatory

Subject loads
Lecture	24
Practice	8

General description
Machine classification. Machine history. Basic requirements for machinery and its parts. The construction of shafts and axles shape.Key and spline joints. Inderference joints. Plain bearings. Rolling bearings. The choice of rolling bearings.The types of transmissions of rotation motions and importance of. Kinematic relations between the forces and relations transmissions where. Multi-stage gear reduction ratio and efficienty. Types of gearing. Involute tooth system. Helical and herringbone weels. Bevel gear. Gears materials. Teeth knocked out over the reasons. Teeth calculations of contact and bending strenght. Worm drive. Special features and workflow efficiencies. The worm gear calculation. The chain of transmission characteristics and the use of. Choice of drive chains and sprockets. Toothed belt drive. Friction drive’s importance and classification. Types of power transmission belts and belt drive construction. Flat belt drive. V-belt drive. Belt slip. Belt transmission drive capability computing. Screw joints. Screw joints computing. Welded joints. Adhesive joints. The importance of couplings and classification. Couplings. Clutches. Variable speed. Gear reducers. The main types of gear units. Gearmotors.

General aim
The aim of the course is engineering the knowledge of almost all the machines present the same of them, and intended to perform the functions of a typical components and assemblies importance, classification, structure, workflow features, materials, knocked out ower root causes and calculation.

Aim
Cells passing through the machine learning, students acquire Engineering Materials, Strenght of Materials, Engineering Graphics and some other subjects of general knowledge asquired on the basis of machine elements, the method of calculation and computation schemes, the fundamentals of rational design principles, wich are necessary for the following specialist subjects through adoption.

Form description
Including classwork: lectures 32, exercise classes 8.

Literature
1. Kleis I. Rakendusmehaanika. Tln, Valgus, 1984, 424 lk. 2. Tiidemann T. Masinaelemendid I. Tln, TTÜ, 1994, 238 lk. 3. Фролов М. И. Техническая механика. Детали машин. (1990). Moskva, Высшая школа. 352. lk.

Evaluation methods
90-100 % of the total volume of the correct grade 5 can be made of a "perfect", score of 80-89 % "very good", 70-79 % grade 3 "good", raiting of 60-69 % 2 "satisfactory", 50-59 % grade 1 "poor" and less than 50 % rated 0 "inadequate".

Replacement Subjects
MTR056 Machine Elements

Current rounds
Machine Elements TK32/42 TT51/61