Course code MašZ4057

Credit points 2

Engineering Technology I

Total Hours in Course80

Number of hours for lectures8

Number of hours for seminars and practical classes16

Number of hours for laboratory classes8

Independent study hours48

Date of course confirmation07.02.2017

Responsible UnitMotor Vehicle Institute

Course developers

author Spēkratu institūts

Gunārs Vērdiņš

Dr. sc. ing.

author lect.

Jānis Galiņš

Mg. sc. ing.

Prior knowledge

DatZ2044, Informatics I

DatZ2045, Informatics II

Mate2033, Mathematical Statistics

LauZ2039, Engineering Graphics

MašZ3031, Materials Science

MašZ4030, Metal Processing I

MašZ4031, Metal Processing II

MašZ4039, Tolerances ans Standartization

Course abstract

The aim of the study course is to get acquainted with production technologies, to assess inaccuracies caused by processing, size distribution and to analyze the causes. Students get acquainted with the methods of ensuring the accuracy of machining, the methodology of calculation of size chains and allowances, the design of technological processes of manufacturing parts and economic evaluation. Students learn the specifics of the use of CNC machines, machine assembly and testing technologies, as well as get acquainted with the development trends of mechanical engineering.

Learning outcomes and their assessment

Knowledge: basics of mechanical engineering technology, machining program CNC Simulator. Assessment - 4 tests.
Skills: to develop a part base scheme and machining technological route, to select a workpiece and to develop a technological map of its machining, to create programs for machining parts with CNC control machines. Assessment - 2 practical works and 3 laboratory works.
Competences: understanding of the choice of workpiece parameters and their processing technology, the ability to develop technologies for the production of parts, as well as assembly of mechanisms and machines. Assessment - 2 practical works.

Course Content(Calendar)

1. Introduction to CNC simulator. (2h)
2. Coordinate axes and reference systems for CNC machine tools. (2h)
3. CNC programming. (2h)
4. Workpiece selection. (2h)
5. Selection of cutting tools. (2h)
6. Selection of cutting speeds and feeds. (2h)
7. Checking and adjusting CNC programs. (2h)
8. Planning the sequence of machining the parts production. (2h)
9. Types of production. (2h)
10. Processing accuracy. (2h)
11. Systematic errors. (2h)
12. Random errors. (2h)
13. Application of size distribution laws. (2h)
14. Stiffness of the technological system. (2h)
15. Calculations of technological dimensions. (2h)

16. Basing and bases in mechanical engineering. (2h)

Requirements for awarding credit points

1. Individual tests in the classroom should be written.
2. Practical and laboratory work must be developed and defended in time.

3. Assessment with a test according to the obtained results in tests and laboratory works.

Description of the organization and tasks of students’ independent work

Practical work in CNC program development using CNC simulator.

Criteria for Evaluating Learning Outcomes

Test.
Accumulative test, all tasks completed.

Regular attendance (at least 75%), tests, laboratory works and independent assignments.

Compulsory reading

1. Haas Operator’s Manual, 2019. [tiešsaiste] [skatīts 09.09.2019.] Pieejams: https://www.haascnc.com/owners/Service/operators-manual.html
2. Sandvik Coromant. Training Handbook. Sweden, 2020. 391 p.
3. Sandvik Coromant. Rotating tools. Sweden, 2020. 524 p.
4. Avotiņš J.. Metālapstrāde. Jelgava: LLU, 2009. 400 lpp.

5. Stephenson D. A., Agapiou J. S. Metal Cutting Theory and Practice. 2016. 970 p.

Further reading

1. Fischer U., Heinzlet M., Naher F. Mechanical and Metal Trades Handbook. Haan-Gruiten: Verlag Europa Lehrmittel, Germany, 2010. 428 p.
2. Tschatsch H. Applied Machining Technology. Germany, Dresden: Springer, 2009. 370 p.
3. Michael Ashby, Hugh Shercliff, David Cebon. Materials engineering, science, processing and design [e-book]. Oxford: Butterworth-Heinemann; 2007. [tiešsaiste] [skatīts 09.02.2018.] Pieejams: ar LLU IS kontu: http://ezproxy.llu.lv/login?url=http://search.ebscohost.com/login.aspx?direct=true&db=e000xww&AN=187430&site=ehost-live&scope=site
4. Donald R. Askeland, Pradeep P. Phule. The Science and Engineering of Materials (International Student Edition). 2006. 863 pp.

5. Robert L. Norton/ Design of Machinery with Student Resource DVD / Edition 5,2011. - 612 pp.

Periodicals and other sources

1. Journal of Process Mechanical Engineering

Notes

Compulsory course for students of the professional bachelor study program “Machine Design and Production”.