Theory of Machining (FSI-HTO)

Academic year 2023/2024
Supervisor: prof. Ing. Miroslav Píška, CSc.  
Supervising institute: ÚST all courses guaranted by this institute
Teaching language: Czech
Aims of the course unit:
The aim of the course is to provide students with basic knowledge from chip forming processes, evaluation of cutting process experiments and individual relations of cutting processes. In the area of cutting tools students will be made familiar with the designation of cutting planes and cutting angles of one- and multi-edge tools and with their graphical and analytic relations.
Learning outcomes and competences:
The subject familiarises students with the theory of deformation processes while cutting technical materials with various cutting tools. Also dealt with is their experimental evaluation.
Prerequisites:
Basics of machining
Course contents:

The course familiarises students with chip removing processes including side effects of deformation processes. The processes of individual types of machining are analyzed from the viewpoint of the mutual action of the cutting tool and the workpiece in order to clarify the relations between the cutting process and economic indicators. Acquired theoretical knowledge can be applied to optimize the cutting process.Great attention is paid, among other things, to modern cutting materials and the integrity of the machined surface. 
Teaching methods and criteria:
The course is taught through lectures explaining the basic principles and theory of the discipline. Teaching is suplemented by practical laboratory work.
Assesment methods and criteria linked to learning outcomes:
Course-unit credit is awarded on condition of having attended the practicals and worked out individual assignments. Exam has a written and an oral part.
Controlled participation in lessons:
Individual assignments and result checking
Type of course unit:
    Lecture  13 × 2 hrs. compulsory                  
    Laboratory exercise  13 × 2 hrs. optionally                  
Course curriculum:
    Lecture Classification of machining methods, mechanism of orthogonal cutting Plastic deformation in front of cutting edge, theory of chip formation Side-effects connected with chip forming, dynamics of cutting process Cutting forces and relations, specific cutting resistance
Experimental dependences for particular methods of machining
Cutting energy
Warmth and temperature occurring during cutting process, factors influencing generation and distribution of warmth at chip forming area
Regularity of cutting tool wear, wear forms
Influence of cutting conditions to edge wear process
Durability and life of cutting tool, edge wear criterion, dependence of durability on cutting conditions
Effective durability from view point of productivity and costs
Machinability of materials, types of machinability, methods for machinability estimation and material sorting into machinability classes
Optimisation of cutting conditions, methodology of cutting conditions optimization determination during rough cutting and finishing
    Laboratory exercise Plastic deformation, chip compression, shear plane
Dynamics of cutting process, cutting forces, specific cutting resistance
Experimental dependences for particular methods of machining
Cutting energy
Warmth and temperature occurring during cutting process, distribution of warmth at chip forming area
Cutting tool wear, wear forms
Influence of cutting conditions to edge wear process
Durability and life of cutting tool, dependence of durability on cutting conditions
Effective durability from view point of productivity and costs
Machinability of materials, types of machinability, methods for machinability estimation
Material sorting into machinability classes
Optimisation of cutting conditions, determination of cutting condition optimization during rough cutting
Determination of cutting condition optimization during finishing
Literature - fundamental:
1. Shaw M.C. Metal Cutting Principles, Clarendon Press, Oxford, 2002, s.256
3. Chladil,J.-Humar,A.: Teorie obrabeni - priklady a cviceni, VUT Brno, 1991
4. Stephenson, David A.; Agapiou, John S. Metal Cutting Theory and Practice Manufacturing. CRC Press. iSBN10 0824795792. Oct. 1996, s. 994
5.

Forejt, M., Piska, M. Teorie obrábění, tváření a nástroje. Brno: CERM, 2006. ISBN 80-214-2374-9.
6.

DE VOS, Patrick, Jan-Eric STÅHL, Kateřina DUFKOVÁ, Miroslav PÍŠKA a Martin SLANÝ. Opotřebení řezných nástrojů: praktické zkušenosti. Fagersta: Seco Tools AB, 2014, 168 stran
7.

De Vos, P.., STAHL, J.-E. Aplikovaná fyzika v obrábění kovů - praktické zkušenosti. Fagersta. Seco Tools AB. 2016. 316 s.
8. SANDVIK: Moderní obrábění kovů, Sadvik Fagersta, 1998, 998 s.
Literature - recommended:
1. Humar,A.: SK a rezna keramika pro obrabeni, Šumperk, 2001
2. Pramet Sumperk: Prirucka obrabeni, Šumperk, 2002
3. Grote,K.H., Antonsson,E.K : Handbook of Mechanical Engineering. Springer. 2014.Stürtz GmbH, Würzburg.p.1576 ISBN: 978-3-540-49131-6 e-ISBN: 978-3-540-30738-9
4. SHAW, M. C. Metal Cutting Principles. Oxford University Press, 2nd ed., 2005, pp. 651, ISBN 0-19-514206-3.
5. Trent, M., Wright, K.: Metal Cutting. Butterworth–Heinemann, 2000.4th ed. 464 p. ISBN 0-7506-7069-X
6. TLUSTY, J. Manufacturing Process and Equipment. 1st edition. Prentice Hall, 1999. 928 s. ISBN 10-0201498650.
7. Gordana Globočki Lakić, Davorin Kramar, Janez Kopač: METAL CUTTING THEORY AND APPLICATIONS. Banja Luka and Ljubljana, 2014. p. 231. ISBN: 978-961-6536-85-1
The study programmes with the given course:
Programme Study form Branch Spec. Final classification   Course-unit credits     Obligation     Level     Year     Semester  
N-STG-P full-time study STM Manufacturing Technology and Management in Industry -- Cr,Ex 6 Compulsory-optional 2 1 S
N-STG-P full-time study STG Manufacturing Technology -- Cr,Ex 6 Compulsory 2 1 S