97464 - LABORATORIO DI MECCANICA P-1-BO

Learning outcomes

At the end of the laboratory, the student knows the basics for the interpretation and execution of technical drawings with conventional representation methodologies (according to UNI ISO) and CAD. In particular, the student: - knows the main three-dimensional solid modeling tools for creating mechanical components; - is able to produce technical drawings and their dimensioning; - is able to define assemblies and kinematic and dynamic simulations of mechanisms, and is able to analyse the results.

Course contents

1. Elements of engineering drawing (5 hours)
   • 1.1.Introduction to engineering drawing
   • 1.2.Layouts of drawing sheets and types of lines
   • 1.3.Projection methods and orthogonal projections
   • 1.4.Sections and special conventional representations
   • 1.5.Dimensioning, dimensioning systems, special conventions for dimensioning
   • 1.6.Tolerance
   • 1.7.Surface roughness
   • 1.8.Special representations: threads, couplings, gears
   • 1.9.Reading an assembly drawing
2. Foundamentals of CAD [PTC CREO] (25 hours)
   • 2.1.Parts: extrusion, revolution, holes, blend, sweep, shells; relations; feature repetitions; material properties; measures and analyses
   • 2.2.Assemblies: rigid and kinematic constraints
   • 2.3.Kinematic, static, kinetostatic and dynamic simulation of mechanisms. Application to the four-bar linkage.
     
   • 2.4.Drawing: views, projections, sections, dimensioning, detail.

Readings/Bibliography

Lessons are recorded and provided to all those enrolled in the course.

Teaching methods

The course provides the basis for a CAD, through interactive lessons. The ultimate goal is to allow students to independently model, assemble and draw mechanical components and assemblies in a CAD, as well as simulate simple mechanical groups. To combine the theoretical and practical aspects, the simulations will be presented with references to the theoretical aspects of the course of Foundations of Mechanics P.

To put the acquired knowledge into practice, a project will be assigned to groups of 3-6 students. The project will consist of the CAD modeling and assembly of the components of a mechanical group, of which a cinematic, static or dynamic simulation must be also performed.

Assessment methods

The student presents the assigned group project. In addition to verifying the project, details are asked on the functioning of the group and on some of the theoretical aspects of the mechanical drawing analyzed in the course.

It is also required to produce a CAD component, an assembly, a mechanical simulation of a mechanism or a drawing during the exam, similar to what proposed during the lessons.

Teaching tools

Some presentations will be used to support the theoretical arguments. The material is made available on the "Virtual" site.

The lessons will be recorded and made available to those enrolled in the course.

Office hours

See the website of Nicola Sancisi