LV EN RU DE FR

Metal Processing II

Course developer

Replaced course

MašZ4051 [GMAS4052] Metal Processing II

Course abstract

The aim of the course is to provide set of practical skills of casting and forging in machinery engineering; processing types and products; Welding process and equipment for electrical, gas and pressure welding, technology and materials: theory of material cutting process; metal cutting machinery, equipment, tools and technology.

Learning outcomes and their assessment

1. Knowledge - metal cutting processes and its parameters – Test No 1. and laboratory works; knowledge of metal cutting machines, cutting tools and metalworking technological processes – Test No 2. and laboratory works;
2. Skills - knowledge of the technological bases of mechanical engineering – Test No 3; capable of evaluating the geometrical parameters of cutters and evaluating the impact of the cutting process on the surface quality - laboratory works;

3. Competence - students are able to assess the impact of the cutting force on the cutting-off process – laboratory work. Capable of calculating gear cutting parameters and choosing the abrasive materials for surface grinding – laboratory works.

Course Content(Calendar)

LECTURES:
1. Cutting process and its parameters. Types of processing. Cutting in motion processing. Geometry of cutting tools: planes, surfaces, angles. The size and impact of the angles on the processing process – 2 hours;
2. Working conditions of cutting instruments and requirements for cutting instrument materials – 2 hours;
3. Test 1 – The theoretical basis of cutting process – 1 hour;
4. High speed steel, its characteristics and uses. Marking according to EN and LV standards – 2 hours;
5. Metal-ceramic and mineral-ceramic cutting instrument materials. Their characteristics and uses – 2 hours;
6. Special hard cut instrument materials: synthetic diamonds and cubic boron nitrite – 2 hours;
7. Choose of cutting tools according to ISO recommendations – 2 hours;
8. Physical bases of metal working. Material resistance to cutting, cutting forces and their determination. Permissible cutting speed – 2 hours;
9. Classifications of metal cutting machines, precision classes, drive – 2 hours;
10. Turning, cutting tools, appliances and machines – 2 hours;
11. Drilling, expanding and shedding works, cutting tools, appliances and machines – 2 hour;
12. Milling works, cutting tools, appliances and machines. Kinetics and dynamics of the milling process – 2 hours;
13. Oblique cutting process, tools and machines – 2 hours;
14. Test 2 – Metalworking technological processes – 1 hour;
15. Metal abrasive machining. Construction and marking of grinding wheels. Grinding works and machines. Specific metalworking types – 1 hour;
16. Test 3 – Technological bases for mechanical engineering – 1 hour;

LABORATORY WORKS:
1. Research of metal cutter geometry – 2 hours;
2. Research of multi-blade cutting tools – 2 hours;
3. Basics of sharpening cutting tools – 2 hours;
4. Cutting force measurements – 2 hours;
5. Threading with a lathe – 2 hours;
6. Straight gear milling – 1 hour;
7. Helical gear milling – 1 hour;
8. Tooth cutting with hob cutters – 1 hour;
9. Tooth cutting with shaper - 1hour;
10. Research of abrasive tools – 2hours.


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

Test type - exam. Examination tasks consist of: test about theoretical study; practical task on topics learned from laboratory works. All tests and laboratory work must be credited.

Description of the organization and tasks of students’ independent work

Preparation for 3 tests and 10 laboratory works – 64 hours.

Criteria for Evaluating Learning Outcomes

Students who have at least assessment 6 in this course of study. The final examination test may not write, and the test rating is compared with the test assessment.

Compulsory reading

1. Avotiņš J. Metālapstrāde. Jelgava: LLU. 2009. 400 lpp.
2. Avotiņš J. Konstrukciju materiālu tehnoloģija 2. daļa. Apstrāde griežot. Jelgava: LLU. 2001. 221 lpp.

3. Avotiņš J. Metālapstrāde. Kursa projekts - Tehnoloģisko procesu izstrāde. Jelgava: LLU. 2005. 90 lpp.

Further reading

1. Proceedings of the Institution of Mechanical Engineers. Part C: Journal of Mechanical Engineering Science. Sage Publications, Ltd. ISSN: 0954-4062 (print). ISSN: 2041-2983 (online) Pieejams Sage: http://intl-pic.sagepub.com/

Notes

Obligatory for students of the bachelor of professional higher education program “Agricultural engineering” in full and part studies.