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Metal Processing II

Course developer

Prior knowledge

MašZ4030, Metal Processing I

Replaced course

MmehB017 [GMMEB017] Metal Processing II

Course abstract

The aim of 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

Knowledge of metal cutting processes and its parameters – Test nr. I and laboratory works; Knowledge of metal cutting machines, cutting tools and metalworking technological processes – Test nr. II and laboratory works; Knowledge of the technological bases of mechanical engineering – Test nr. III.
Skills - capable of evaluating the geometrical parameters of cutters and evaluating the impact of the cutting process on the surface quality - laboratory works.
Competences - it is possible to evaluate the geometrical parameters of the cutters and evaluate the impact of the chip separation process on the quality of the treated workpiece surface. Assessment - laboratory works.
The effect of cutting force on the chip separation process can be assessed - laboratory work. Gear cutting parameters can be calculated and abrasive materials for surface grinding can be selected - laboratory works.

Course Content(Calendar)

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

Test Nr III. – Technological bases for mechanical engineering – 1h.

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 - 32 hours.
Development of detailed technological processes - 40 hours.

Criteria for Evaluating Learning Outcomes

• developed and defended laboratory works;
• tests for the theoretical course are included;
• the number of delayed activities does not exceed 10 ... 15% of the total number.

Exam.

Compulsory reading

1. Avotiņš J. Metālapstrāde. Jelgava: LLU, 2009. 400 lpp.
2. Avotiņš J. Metālapstrāde. Kursa darbs "Tehnoloģisko procesu izstrāde": metodiskie norādījumi. Jelgava: LLU. 2005. 90 lpp.
3. Vērdiņš G., Dukulis I. Materiālu mācība. Jelgava: LLU, 2008. 240 lpp.

4. Avotiņš J. Konstrukciju materiālu tehnoloģija 2. daļa: Apstrāde griežot. Jelgava: LLU. 2001. 221 lpp.

Further reading

1. Bunga G., Geriņš Ē. Apstrādes ar atdalīšanu tehnoloģijas. Rīga, 2007. 90 lpp.

2. Machining Technology Tool Catalogue. FRANKEN G und H & Co. KG. Germany. 2005.

Periodicals and other sources

1. Journal of Mehanical Engineering Science. ISSN: 0022-2542.

Notes

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