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Engineering Technology II

Course developers

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 evaluate inaccuracies caused by processing, size dispersion 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

1. Knowledge: about calculation the dimension chains and allowance for machining, principle of leading CNC metal cutting machine, technology for assembling mechanisms and machines. Assessment - 2 tests.
2. Skills: can to develop calculation the dimension chains and allowance for machining, to know principle of leading CNC metal cutting machine, be able to develop technology for assembling mechanisms and machines. Assessment - 4 practical works.

3. Competence: wide scope about manufacturing process of metal cutting technologies, competence in evaluating efficiency of metalworking process, of rationale prepare and manufacturing process. Assessment - 4 practical works.

Course Content(Calendar)

1. Introduction to Mastercam. (2h)
2. Influence of machining technology on the surface properties of the part. (2h)
3. Surface roughness and accuracy. (2h)
4. Allowances for machining. (2h)
5. Productivity of technological processes. (2h)
6. Economics of technological processes. (2h)
7. Basics of workload calculation. (2h)
8. Basing and base selection. (2h)
9. Types of technological processes. (2h)
10. Technological process design sequence. (2h)
11. Basics of machining programming. (2h)
12. Technology of manufacturing shaft type parts. (2h)
13. Flat part manufacturing technology. (2h)
14. Machine assembly technologies. (2h)
15. Size calculations in assembly processes. (2h)

16. Development trends of mechanical engineering technologies. (2h)

Requirements for awarding credit points

1. Successful assessment in tests.
2. Passed practical and laboratory works during workshops.
3. Evaluation of reports in classes.

Accumulative exam with a mark according to the results obtained in tests, practical and laboratory works.

Description of the organization and tasks of students’ independent work

Practical work in CNC program development using Mastercam.

Criteria for Evaluating Learning Outcomes

1. The student gets successful mark in the test if at least 50% of the questions are answered.
2. Practical works are done and defended in time.

The final mark consists of successfully written tests and defended practical work.

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 Proceedings of the Institution of Mechanical Engineers - Part E: Journal of Process Mechanical Engineering. Published by Sage Publications. ISSN (printed): 0954-4089. ISSN (electronic): 2041-3009.

Notes

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