Course code MašZ4057
Credit points 3
Total Hours in Course81
Number of hours for lectures8
Number of hours for seminars and practical classes16
Number of hours for laboratory classes8
Independent study hours49
Date of course confirmation07.02.2017
Responsible UnitInstitute of Engineering and Energetics
Dr. sc. ing.
Mg. sc. ing.
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
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.
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.
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)
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.
Practical work in CNC program development using CNC simulator.
Test.
Accumulative test, all tasks completed.
Regular attendance (at least 75%), tests, laboratory works and independent assignments.
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.
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.
1. Journal of Process Mechanical Engineering
Compulsory course for students of the professional bachelor study program “Machine Design and Production”.