Course detail

Technology of CNC Machining

FSI-HNC-AAcad. year: 2018/2019

The course is focused on the fundamentals of CNC manufacturing production. A basic guide is provided giving the grades and use of cutting materials, workability of materials. Optimal selection and strategy for CNC machining or assembling technology. Shop quality evaluation. Basic CNC technologies such as turning, milling and drilling for Sinumerik 810D/Heidenhain iTNC530 are described. Cutting tools and machining parameters. Time consumption and integrity of machined surfaces. Optimization of the process from the point of maximum production rate and minimum costs is solved in graphical and numerical ways.

Learning outcomes of the course unit

Students are trained in CNC programming and other aspects of NC machining. They will be able to define technological processes of manufacturing methods and be able to control systems using Sinumerik 810D/840D and Heidenhain iTNC 530.

Prerequisites

Successful completion of the courses “Production Technologies II”, “Technology of Production and Computer Support of Technology”, good knowledge of fundamental methods of machining.

Co-requisites

Not applicable.

Recommended optional programme components

Not applicable.

Recommended or required reading

Piska, M., Cihlarova, P., Hill, M.: Fundamentals of CNC Machining. http://www.fme.vutbr.cz/opory/pdf/ust/obrCNC/Fundamentals%20of%20CNC%20Machining.pdf
Sandvik Coromant: Metal Cutting Mechanics
Siemens AG: Sinumerik 810 ukkyuhuikuyo- Fundamentals
Piska, M., Cihlarova, P., Hill, M.: Fundamentals of CNC Machining. http://www.fme.vutbr.cz/opory/pdf/ust/obrCNC/Fundamentals%20of%20CNC%20Machining.pdf
Schneider, G.: Cutting Tool Applications
Smid, P.: A Comprehensive Guide to Practical CNC Programming. Industrial Press Inc., Second Ed., 2003,pp. 506, ISBN 0-8311-3158-6
Evans, K.: Programming of Computer Numerically Machines, Industrial Press Inc. Third Ed. 2007, pp. 458, ISBN 978-0-8311-3316-0.
Siemens AG: Návody k programování. Návod k obsluze. 4. vydání, Erlangen, SIEMENS a.s., 2000, 469 s.

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

Examination consists of a written and an oral part. The written part focuses on a solution using CNC programming and machine tooling and settings. The oral part tests student’s knowledge of a topic selected randomly from the concerned areas to assess depth of understanding of the studied processes.

Language of instruction

English

Work placements

Not applicable.

Aims

A study of modern CNC manufacturing technologies. Programming of the Sinumerik 810D/840D control system. Workshop oriented programming - ShopMill, ShopTurn. Programming of the Heidenhain iTNC530 control system. English terminology. Better job opportunities for graduates.

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

Recommended participations in lessons. Compulsory and checked participations in exercises and labs. Obligatory full presence in all exercises. Inspection of senior professors. According to the studied topic some lessons will be practicals - carried out in the lab, and some will be focused on the theory - calculations carried out in the classroom in a seminar form. Absence from seminars should be substituted for by attending a seminar with another study group or individually by the agreement with the teacher. Lessons may be occasionally inspected by the head of the department. Assessment of student aktivity in training cources (lab/classroom).
Successful completion of two knowledge tests on the subject.
Successful defence of their written works, protocols or technical reports.

Classification of course in study plans

  • Programme M2E-A Master's

    branch M-IND , 1. year of study, winter semester, 7 credits, compulsory

  • Programme M2I-P Master's

    branch M-STG , 1. year of study, winter semester, 7 credits, compulsory-optional
    branch M-STG , 1. year of study, winter semester, 7 credits, compulsory-optional
    branch M-STM , 1. year of study, winter semester, 6 credits, compulsory
    branch M-VAS , 1. year of study, winter semester, 7 credits, compulsory

Type of course unit

 

Lecture

39 hours, optionally

Teacher / Lecturer

Syllabus

1. Fundamentals and terminology of NC machining technology.
2. Tool materials for CNC machining.
3. Wear of cutting tools, forms and physical mechanisms.
4. Measurement of tool loading when cutting.
5. Technology of turning. Turning operations a tooling.
6. Technology of drilling. Drilling operations a tooling
7. Technology of milling. Machining operations a tooling.
8. Fundamentals of CNC programming - SINUMERIK 810D/840D. SPY 280, MCV 1210.
9. Methods of programme generation. Graphical simulation of a programme.
10. CNC machining cycles. Machining of complex curves and surfaces.
11. CNC work schedule and sequence of cutting operations, tooling and machine set up list.
12. Fundamentals of FV 25CNC/ Heidenhain iTNC 530 programming.
13. DNC programming of FV 25CNC/ Heidenhain iTNC 530.ShopMill, ShopTurn.

labs and studios

39 hours, compulsory

Teacher / Lecturer

Syllabus

1. Basic descriptions of cutting machines and facilities.
2. Selection of tool materials for CNC machining.
3. Estimation of cutting conditions. Tool wear.
4. Active measurement of tool loading when cutting.
5. Technology of turning, calculations. Basic turning operations and tooling.
6. Basics of CNC programming - SINUMERIK 810D.
7. Tool management. Tool coding.Data operations. Graphical simulation of a programme.
8. Tests.
9. CNC machining cycles. Contour turning.
10.CNC work schedule. Sequence of cutting operations when machining.
11.-13.Technological and economical analysis of CNC machining operations.