Course detail
Theory of Machining
FSI-HTO-A Acad. year: 2020/2021 Summer semester
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.
Language of instruction
English
Number of ECTS credits
6
Supervisor
Department
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
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.
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
The study programmes with the given course
Programme N-ENG-A: Mechanical Engineering, Master's, compulsory
Type of course unit
Lecture
26 hours, compulsory
Teacher / Lecturer
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 hours, optionally
Teacher / Lecturer
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