28555 - Automatic Machines

Learning outcomes

Automatic machines for discrete processes (functional concepts, architectures, operating modalities, main employment criteria), with particular reference to the packaging industries.

Course contents

The course is divided into two modules corresponding to 6 CFU and 3 CFU respectively. The two modules are developed synergistically during the lesson period.

The first module, with 6 CFU (60 hours), is organized in the following sections:

M1-1 Statics of rigid bodies and calculation of constraints relationships in the case of moving boundary conditions (loads and constraints);

M1-2 Internal actions in slender bodies (e.g. beams) and their diagrams

M1-3 The concept of deformation in beams, simple and composite, even in the presence of uniform and non-uniform thermal fields

M1-4 The concept of tension in beams, simple and composite, even in the presence of uniform and non-uniform thermal fields

M1-5 Constituent laws for materials (metallic, plastic and ceramic); with particular regard to quasi-static and viscoelastic behaviour

M1-6 Study of the four cases of stress (normal stress, torsion, pure bending and shear-bending), even in the presence of uniform or variable thermal fields, with particular attention to the analysis of the displacement fields of slender bodies and their application in the mechatronics field.

M1-1.7 Analysis of the vibratory behaviour of beams (axial, torsional and bending vibrations)

2. The second module deals with the main elements of machine construction:

M1-2.1 Study of transmission shafts

M1-2.2 Study of bearings and examples of their assembly in automatic machine components

M1-2.3 Study of springs and their applications in Automatic Machine components (including cases of sagging joints)

Exercises will complete the first module and the second module.

Some of the exercises will be carried out by the teachers during the lessons (there is no specific day for the exercises). Alternatively, the teachers in the classroom will only set some exercises, and students must complete them at home independently and collect them in an exercise book that will be an integral part of the oral examination. Finally, students are also assigned additional exercises that must be carried out autonomously at home and collected in the exercise book that will be the subject of discussion during the oral test.

Readings/Bibliography

1. Dispense del Corso

2. James M. Gere, Barry J. Goodno, Mechanics of Materials, Cengage Learning, 2012

3. Ansel C. Ugural, Mechanical Design of

Machine components, CRC Press, 2015

4. Robert C. Juvinall, Kurt M. Marshek, Fundamentals of Machine Component Design, John Wiley & Sons, 2012

5. Richard G. Budynas, J. Keith Nisbett, Shigley’s

Mechanical Engineering Design, McGraw-Hill, 2011

Teaching methods

Frontal teaching in the classroom with use of slides and videos.

The course is developed both providing theoretical concepts and carrying out and assigning theoretical exercises and applications related to construction aspects of Automatic Machines.

To students are assigned exercises to be carried out autonomously and individually (only if specified by the teacher some exercises may be carried out in groups and, in this case, the names and surnames of the students who participated in the group must be specified in the homework book). These exercises must be collected, in an orderly manner, in a homework book that the students must bring to the exam for oral discussion.

Assessment methods

The learning verification of the topics covered during module 1 and module 2 will be carried out on the same day.

The verification will be carried out, preferably through an oral interview at a distance. During the oral test, the teacher will verify the knowledge of the theoretical topics and will check the application skills acquired in carrying out the exercises that have been assigned during the lessons and that the students will have collected in the dedicated homework book. In the case of a homework book written collaboratively, each member of the group who has collaborated in the writing of the exercise book will have to demonstrate a personal and total mastery of each exercise.

During the oral test, the teacher may also submit to the students transversal and reasoning questions regarding the topics and exercises covered in the lesson.

Variations on the exam method may be adopted by the teacher due to force majeure requirements and will be communicated to the students. Furthermore, should it be necessary due to a large number of students enrolled at the roll call, the teacher may submit to the students a multiple-choice test whose passing, with a minimum score of 18/30, will be necessary to access the oral exam. In this case, the questions of the oral examination will mainly focus on subjects not covered by the admission test.

Teaching tools

PowerPoint presentations and audiovisual.

Office hours

See the website of Andrea Zucchelli