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Machine Elements II

Course developer

Prior knowledge

LauZ3126, Strength of Materials I

LauZ3162, Strength of Materials II

LauZ4190, Theoretical Mechanics II

MmehB008, Theoretical Mechanics I

Replaced course

LauZ4070 [GLAU4070] Machine Elements II

Course abstract

The aim of the study course is to acquire the theory of general (typical) machine elements (part and units), engineering calculations and design, present engineering knowledge for creative machine design work, develop engineering thinking, initiative and creation, to apply the existing ideas and to search for new ones, to modulate using analogues.

Learning outcomes and their assessment

Knowledge - know the criteria for workability of machines, machines and parts, selection of materials and design methods, knowledge of the design-related standards (ISO, LVS, DIN) - exam.
Skills - how to choose a technical method to address tasks, use manuals and standards for practical tasks - 4 laboratory work tasks.
Competence - capable of modulating tasks in machine science, addressing technical tasks and conducting independent studies, is a knowledgeable, informed, and capable professional – 4 laboratory work tasks.

Course Content(Calendar)

1. Gear drive types (Lecture – 2h)
2. Selection of gear material (Lecture 1h)
3. Calculation of gear train (Lecture – 1h, Lab Work 2h)
4. Calculation of gear (Lecture – 1h, Lab Work 2h)
5. Shaft connections (Lecture – 2h)
6. Calculation of shaft connections (Lecture – 1h, Lab Work 2h)
7. Couplings, clutches and brakes (Lecture – 2h, Lab Work 2h)
8. Thread types (Lecture – 2h)
9. Threaded connection calculation (Lecture – 2h).

Part-time studies:
1. Gear drive types (Lecture – 1h)
2. Selection of gear material (Lecture – 1h)
3. Calculation of gear train (Lecture – 1h, Laboratory work – 1h)
4. Calculation of gears (Lecture – 1h, Laboratory work – 1h)
5. Construction and calculation of shaft connections (Lecture - 1h, Laboratory work - 1h)
6. Clutches and brakes (Lecture – 1h, Laboratory work - 1h)
7. Types of thread connections, calculation (Lecture – 1h).

Part-time extramural studies:
All the topics intended for full-time studies are covered, yet the number of contact hours is ½ of the specified number of hours.

Requirements for awarding credit points

All lab work tasks must be submitted and defended,
exam must be written and successfully graded.
Credit points are assigned if the rate weighted average score is at least grade 4.

Description of the organization and tasks of students’ independent work

Students must independently perform calculations for the successful execution of laboratory work. Students prepare themselves for the exam on the subject of lectures.

Criteria for Evaluating Learning Outcomes

Each work is evaluated on a scale of 10 points.
A successful rating is at least grade 4.

Compulsory reading

Budynas R., Nisbett K. Shigley's Mechanical Engineering Design, 10th edition. Singapore etc.: McGraw-Hill, 2014. 1104 p.

Further reading

1. Uzkliņģis G. Mašīnu elementi. 1.daļa: Savienojumi. Jelgava: LLU, 2008. 468 lpp.

2. Fischer U., Gomeringer R., Heinzler M., Kilgus R. Mechanical and Metal Trades Handbook, 3rd edition. Europa-Lehrmittel, 2012. 444 p.

Notes

Compulsory course for students of the academical higher education study program "Agricultural Engineering". 3rd study year 5th semester.