• Semester 5, position 5

1.Awareness that efficiency of computer use in engineering activities can be accomplished only through integrated systems, such as CAD/CAM systems used in the area of product design and design of manufacturing technology. 2. Mastery of theoretical foundations of contemporary CAD/CAM systems structure and operation. 3. Acquisition of practical knowledge about using CAD/CAM systems and numerically controlled machine tools programming.

On successful completion of the course, students should be able to: •Design products using CAD (3D modeling of parts and assemblies). •Design manufacturing technology of parts using CAD (creating NC-sequences). •Identify the NC program contents (G-code) for CNC machine tools. •Apply in practice some of the contemporary CAD/CAM systems for product and manufacturing technology design. •Transfer NC program into a control unit of a respective CNC machine tool.

Theoretical teaching comprises two teaching units: 1. Problem of work-piece geometrical modeling as a basis of CAD system. Internal, computerized and model development of work-piece means to create prerequisites for using that model as a basis for design of manufacturing technology and for generating control information (CAM) for numerically controlled machine tool. In addition to using conventional numerical control technology, this teaching unit is also considering the application of work-piece computer model as a basis of "rapid prototyping" by material addition technology. 2. Basis, structure and application of conventional languages for programming numerically controlled machines are presented. Studies of geometry description, kinematics, technological demands and post-processor commands lead to the contents and structure of control information for modern computer controlled machine tools. Syllabus also includes studying of APT and EXAPT languages.

Exercises are organized in computer rooms and at the Laboratory for machine tools. Using available CAD/CAM software, such as Creo Parametric, Autodesk Inventor, Catia, NX, Solid Works and the like, the student will master the skill of work-piece geometrical model development as well as the skill of generating tool path in making NC program for numerically controlled machine tools. Also, the student will write NC program in APT. Final exercise involves the development of NC program for a concrete work-piece on a concrete machining center. Work-piece is manufactured at the Laboratory for machine tools.

This course is strongly linked to the area of production engineering and there are no prerequisites for course attendance.

Instructions for performing laboratory exercises [In Serbian]. CAX workstation (CAD, CAM, CAE, CAPP, ...), CAD/CAM software package.

Total assigned hours: 75

New material: 20
Elaboration and examples (recapitulation): 10

Auditory exercises: 0
Laboratory exercises: 30
Calculation tasks: 0
Seminar paper: 0
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Review and grading of calculation tasks: 0
Review and grading of lab reports: 0
Review and grading of seminar papers: 0
Review and grading of the project: 0
Test: 0
Test: 10
Final exam: 5

Activity during lectures: 10
Test/test: 40
Laboratory practice: 20
Calculation tasks: 0
Seminar paper: 0
Project: 0
Final exam: 30
Requirement for taking the exam (required number of points): 40

Goran Mladenović, CAD/CAM Sistemi, University of Belgrade - Faculty of Mechanical Engineering, ISBN: 978-86-6060-215-4, 2025. (in Serbian); Goran Mladenović, CAD/CAM Systems - Practicum for Creo Parametric, University of Belgrade - Faculty of Mechanical Engineering, ISBN: 978-86-6060-013-6, 2019. (in Serbian); Pavao Bojanić, Radovan Puzović, Production systems - APT language, University of Belgrade - Faculty of Mechanical Engineering, ISBN: 86-7083-449-9, 2010. (in Serbian)