Course detail

Theory of Machining

FSI-HTOAcad. year: 2022/2023

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. 

Language of instruction

Czech

Number of ECTS credits

6

Mode of study

Not applicable.

Guarantor

prof. Ing. Miroslav Píška, CSc.

Department

Institute of Manufacturing Technology (ÚST)

Learning outcomes of the course unit

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

Co-requisites

Not applicable.

Planned learning activities and teaching methods

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.

Course curriculum

Not applicable.

Work placements

Not applicable.

Aims

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.

Specification of controlled education, way of implementation and compensation for absences

Individual assignments and result checking

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Chladil,J.-Humar,A.: Teorie obrabeni - priklady a cviceni, VUT Brno, 1991 (CS)
SANDVIK: Moderní obrábění kovů, Sadvik Fagersta, 1998, 998 s. (CS)
Shaw M.C. Metal Cutting Principles, Clarendon Press, Oxford, 2002, s.256 (EN)

Recommended reading

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 (EN)
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 (EN)
Humar,A.: SK a rezna keramika pro obrabeni, Šumperk, 2001
Pramet Sumperk: Prirucka obrabeni, Šumperk, 2002
SHAW, M. C. Metal Cutting Principles. Oxford University Press, 2nd ed., 2005, pp. 651, ISBN 0-19-514206-3. (EN)
TLUSTY, J. Manufacturing Process and Equipment. 1st edition. Prentice Hall, 1999. 928 s. ISBN 10-0201498650. (EN)
Trent, M., Wright, K.: Metal Cutting. Butterworth–Heinemann, 2000.4th ed. 464 p. ISBN 0-7506-7069-X (EN)

Classification of course in study plans

  • Programme N-STG-P Master's

    specialization STM , 1 year of study, summer semester, compulsory-optional
    specialization STG , 1 year of study, summer semester, compulsory

  • Programme LLE Lifelong learning

    branch CZV , 1 year of study, summer semester, compulsory-optional

Type of course unit

 

Lecture

26 hod., compulsory

Teacher / Lecturer

doc. Ing. Josef Chladil, CSc.

Syllabus

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

26 hod., optionally

Teacher / Lecturer

doc. Ing. Karel Kouřil, Ph.D.
doc. Ing. Josef Sedlák, Ph.D.

Syllabus

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