Course title, code: Computer-integrated manufacturing, GAJABAN-GYARTAUT-1
Demonstration of a computer-aided design and manufacturing process through the application of CAM technology. Preparation and production of analytical and non-analytical surfaces (translation surfaces, line surfaces, sculpture surfaces). Another goal is to learn about the applicability of the “Reverse Engineering” and “Rapid Prototyping” techniques (“RP”).
Computer Aided Technology Design Process. The structure of the CAD module: canned molds, element formation, mold formation, transformations. The process of mechanical design. Life stages and product models. Basics of shape-based design. Structure of the CAM module. Defining 2-2,5-3-4-5 axis machining, the purpose of “rotational motion”. The post-processing of the CNC program, the process and animation of the production animation. Surface description and modeling. Characterization of wireframe, body, and surface models. Interpretation of translational, line, and sculptural interfaces. Description of planar geometric shapes, analytical and non-analytical curves (Bézier curve, string, spline, polynomial). Description and derivation of surfaces. The digital design and manufacturing process defines and groupes digital manufacturing (manufacturing and assembly, synchronous modeling, manufacturing design, manufacturing logistics, manufacturing automation, etc.). Introducing the relationship between digital design and digital manufacturing. Machine tool modeling (machine tool digitization), production modeling in virtual space (examples from the department related to the topic). Basics of shape-based design: limitations of body modeling, feature-based modeling, basic concepts. Classification of manufacturing process shape features. Geometric and semantic interpretation of shape features. Handling attributes, types of shape features, grouping. The principles of modeling with features are the essence of the name “Design with features”. Smoothing Strategies in “CAM”. Interpretation of the theoretical and real toolpaths as well as the basic concepts used in finishing. Factors influencing surface roughness during smoothing. Smoothing techniques in various CAM software (eg based on raster pattern, radial, spiral pattern, 3D offset smoothing, “Z” direction smoothing, residual milling principle, etc.), gripping techniques. Projection smoothing (flat, straight, circular), smoothing 4-5D surfaces. Finishing of free space with ball end mill (smoothing of hardened and unhardened surfaces). 3D scanning steps. Processing a scan result. “Reverse Engineering” design process (use examples). Aim and grouping of rapid prototype manufacturing technique. Presentation of each process (SLA, SLS, DLP, FDM, LOM, PolyJet, Slicing, Etc.). Competitive product development process. The steps of competing product development, the relationship between life stages and the product model. Computer techniques in mechanical design.
Course content - labs:
The aim of the labs is to gain confidence in the use of the CAD/CAM software environment in practice, from modeling to production documentation. The knowledge base includes the design of 2D turning processes, where students learn to program contour-following roughing and finishing cycles. During milling tasks, students progress from basic 2.5D operations (pocket operations, drilling cycles, contouring) to more complex 3D milling strategies involving free-form surfaces.
Knowledge:
During the acquisition of the course, students will be able to independently generate a CNC program using a CAM software. During the laboratory exercises, the students will get acquainted with the production process of the programmed parts, they will be able to control and organize such a production process. They gain knowledge about the techniques of applying the “RE” and “RP” procedures.
Mid-term study requirements:
During the semester, one final examination will be written, which can be corrected or made up once. Students are required to submit two CAM homework assignments by the required deadline.
Exam requirements:
1st position: The use of GAI tools is not permitted when solving tasks. This means that GAI tools cannot be used when creating or solving formative or summative assessment elements, and the use of generative AI constitutes academic misconduct. The use of AI tools for language and spelling checking is not subject to the complete ban under the 1st position.
The educational materials and lecture notes are made available on Microsoft Teams.
1. Michael Fitzpatrick: Machining and CNC Technology, 2005 by the Mc.Graw. Hill (Higher Education). 2. Alain Bernard: Fabrication assistée par ordinateur, by Lavoisier, Paris 2003.
1. Mátyási Gyula: CAM tankönyv 2. Dr. Boza Pál: CNC-TECHNOLÓGIA és -PROGRAMOZÁS, Jegyzet 2008. H-379. 3. Dr. Boza Pál, Burunyi Pál: CNC Forgácsolás 1 CNC Programszerkesztés, CNC Forgácsolás 2 CNC Gépkezelés. Tankönyv, NSZFI 2007. Budapest. (ISBN 978 96 3746 967-1) 4. Dr. Mátyási Gyula: CNC technológia és programozás. I-II. Programozás. Műszaki Könyvkiadó Budapest.