The teaching of Manufacturing Technology introduces the fundamental aspects for the study of production processes used in the manufacturing industry, providing knowledge about mechanical metrology for geometric, dimensional, and surface-finishing analysis of machined products; and metal cutting, considering basic theoretical models, main processes, and machine tools. The course also introduces the principles of additive manufacturing, and welding and adhesive-bonding processes.
The course provides knowledge about mechanical metrology for geometric, dimensional, and surface-finishing analysis of machined products; and metal cutting, considering the basic theoretical models, the main processes and machine tools. The course also provides the fundamentals of additive manufacturing, welding, and adhesive bonding.
At the end of the course, the student will be able to:
Elements of calculus and geometry, precisely derivatives, integrals, and trigonometry.
Basic concepts related to material properties, stress, strain, hardness
Teaching consists of lectures, during which the lecturer will also show physical pieces and films to facilitate understanding of the various aspects of the technologies/processes covered.
Lectures will also be given in the laboratory, where it will be possible to see tools, equipment and machines used in subtractive and additive manufacturing processes and joining methods.
1. Introduction to Manufacturing Technology
Technology and manufacturing; Fabrication by process and by parts; Fabrication and assembly stages; The manufacturing system; Design and development; Rapid prototyping; Product design; Concept of sustainability; Choice of materials and manufacturing processes; Integrated manufacturing systems.
2. Metrology and product quality
Recalls to tolerances; Mechanical metrology; Measurement and uncertainty; Statistical analysis for repeated readings; Tools for dimensional and geometric analysis of parts; CMM systems; Nonius and micrometer screw; Types and use of gauges; Types and use of micrometers; Surface condition and roughness; 2D and 3D surface analysis tools; Quality assurance: TQM and SQC; Control charts.
3. Metal cutting
Motions and velocity; Elementary tool; Mechanisms of chip formation; Orthogonal cutting: kinematics and dynamics; Cutting power; Thermodynamics of cutting; Tool materials; Tool wear forms; Turning; Milling; Drilling; Grinding.
4. Additive Manufacturing
Principles of Additive Manufacturing; Stereolithography (SLA); Selective Laser Sintering (SLS); Polyjet; Fused Deposition Modeling (FDM); Additive Manufacturing of composite materials.
5. Joining Technologies
Fundamentals of welding: definitions, structure and thermodynamics of a welded joint; Main technologies: Electric arc welding (SMAW, MIG/MAG, TIG, submerged arc); Resistance welding (RSW); Solid state welding (FSW). Principles of adhesive-bonding: Applications, Advantages and disadvantages, Types of failure, Process steps. Hybrid weld-bonded joints.
Course slides distributed at the beginning of class through the Aulaweb page.
Collection of exercises provided by the lecturer.
Ricevimento: 9 to 10 from Monday to Thursday by appointment
MARCO PIZZORNI (President)
ENRICO LERTORA
CHIARA MANDOLFINO (President Substitute)
https://corsi.unige.it/8720/p/studenti-orario
The exam consists of a written test and an oral test. Only the passing of the former gives access to the latter. The oral test consists of one or more questions designed to ascertain the knowledge acquired by the student.
Successful completion of the written examination cannot be retained for subsequent appeals.
The student in the written test must demonstrate understanding of the topics explained in the lectures and the ability to solve problems starting from the definitions and models studied. The reference topics of the written test are metal cutting and related main machining operations.
In the oral examination, the student's preparedness is ascertained by testing the student's ability to process the information received in the lecture, demonstrating not only mnemonic learning but above all a mature assimilation of concepts.
Pre-requisites :
Mathematical analysis 1, Geometry, General physics, Mechanics of materials.
