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Technology Mechanics II

Code:

LEM21117

Sigla:

TMII

Áreas Científicas
Classificação	Área Científica
OFICIAL	Industrial Organisation and Technology

Ocorrência: 2021/2022 - 1S

Ativa?	Yes
Unidade Responsável:	Departamento de Engenharia Mecânica
Curso/CE Responsável:

Ciclos de Estudo/Cursos

Sigla	Nº de Estudantes	Plano de Estudos	Anos Curriculares	Créditos UCN	Créditos ECTS	Horas de Contacto	Horas Totais
EM	25	Plano de Estudos	2	-	6	75	162

Língua de trabalho

Portuguese

Objetivos

It is intended with this curricular unit that students acquire the fundamentals in eight main areas, respectively:

i) safety, hygiene and health at work;

ii) dimensional metrology;

iii) chip removal cutting processes;

iv) break-in cutting processes;

v) abrasive cutting processes;

vi) plastic forming processes;

vii) EDM cutting processes;

viii) computer numerical control (CNC).

Resultados de aprendizagem e competências

Within the scope of this curricular unit, students will develop the following skills:
• Know the fundamentals of safety, hygiene and health at work;

• Know and know how to use the measuring equipment, as well as the instruments used to verify it;

• Know the main machining processes through chipping, break-in cutting and abrasive cutting, used in the metalworking industry;

• Understand the theoretical foundations that explain the processes of cutting by chip removal, cutting by breaking and by abrasive action;

• Know how to select the most suitable cutting machining process(s) by chipping, breaking and abrasive action for each application, considering the different specific variables, namely, the fastening system, the tools and the cutting parameters that guarantee the optimization of the manufacturing process;

• Know the working principles of penetration and wire EDM processes;

• Understand the influence of the operating parameters of EDM machining, in terms of the finishing of the manufactured parts;

• Know the working principles of plastic forming processes;

• Knowing how to select the most suitable plastic forming process(es) for each application, considering the different specific variables, namely, the feeding system, the tools and the forming parameters that guarantee the optimization of the forming process. manufacturing;

• Know the characteristics of numerical control, in terms of its application in machine tools;

• Know how to elaborate elementary numerical control programs, using the ISO language;

• Know the principles of operation of computerized numerical control machine tools.

Modo de trabalho

Presencial

Programa

Module 1. Safety, Hygiene and Health at Work.

Module 2. Dimensional Metrology.

2.1. Nonius equipment and scales.

2.2. Verification/Calibration.

2.3. Coordinate measuring machine (MMC/CMM).

Module 3. Machining technology.

3.1. Introduction to chipping cutting.

3.2. Relative part/tool ​​movements.

3.3. Orthogonal cut. Concepts.

3.4. Generalization to the three-dimensional case. Force calculation. Power calculation.

3.5. Heat generated in cutting by chipping. Cutting fluids.

3.6. Materials for chipping cutting tools.

3.7. Failures and wear of cutting tools.

3.8. Optimization of machining conditions.

3.9. Manufacturing notebook / Machining Sequences.

Module 4 - Study of break-in cutting processes

4.1. Introduction.

4.2. Other ""non-traditional"" machining processes.

Module 5. Abrasive cutting.

5.1. Abrasive cutting fundamentals.

5.2. Abrasive cutting processes.

Module 6 – Plastic Forming.- Theoretical foundations.

6.1. Industrial applications.

6.2. Theoretical foundations.

Module 7. EDM.

7.1. Introduction to EDM technology.

7.2. Fundamentals on the parameterization of EDM operations.

7.3. Technical tables.

Module 8. CNC Programming.

8.1. Introduction to computer-aided manufacturing.

8.2. Programming through numerical command.

8.3. Preparatory functions, auxiliary functions and variables.

8.4. CNC equipment operation.

Bibliografia Obrigatória

A. Completo; A. Festas; J. Paulo Davim; Tecnologia de Fabrico, Publindústria, 2009. ISBN: 978-972-8953-31-7
Pedro Guedes; Metrologia industrial, Grupo Lidel, 2011. ISBN: 978-972-8480-27-1
J. Paulo Davim; Princípios da maquinagem, Publindústria, 2008. ISBN: 978-972-8953-24-9
Jorge Rodrigues; Paulo Martins; Tecnologia Mecânica - Tecnologia da Deformação Plástica (Vol. I - Fundamentos Teóricos), Escolar Editora, 2010. ISBN: 978-972-592-279-8
Jorge Rodrigues; Paulo Martins; Tecnologia Mecânica - Tecnologia da Deformação Plástica (Vol. II - Aplicações Industriais), Escolar Editora, 2010. ISBN: 978-972-592-280-4
Carlos Relvas; Controlo Numérico Computorizado - Conceitos fundamentais, Publindústria, 2018. ISBN: 9789898927163
Joaquim Rocha; Programação de CNC para torno e fresadora, Grupo Lidel, 2016. ISBN: 978-972-722-843-0

Bibliografia Complementar

Valentino Cristino; Paulo Martins; Tecnologia Mecânica - Tecnologias da deformação plástica e corte (Vol. IV - Técnicas de laboratório), Escolar Editora, 2013. ISBN: 978-972-592-392-4
Bárbara Gouveia; Jorge Rodrigues; Paulo Martins; Tecnologia Mecânica - Tecnologia da Deformação Plástica (Vol. III - Exercícios resolvidos), Escolar Editora, 2011. ISBN: 9789725923214

Métodos de ensino e atividades de aprendizagem

Classes will be taught in the classroom, and the respective presentation will be made available prior to the class.
After the theoretical exposition of the subject, it is illustrated through examples of application and resolution of exercises.
The weekly planning, as well as all teaching materials are available on the Moodle e-learning platform page.

Tipo de avaliação

Distributed evaluation without final exam

Componentes de Avaliação

Designation	Peso (%)
Teste	43,00
Trabalho escrito	7,00
Trabalho laboratorial	50,00
Total:	100,00

Componentes de Ocupação

Designation	Tempo (Horas)
Estudo autónomo	47,00
Frequência das aulas	45,00
Trabalho escrito	40,00
Trabalho laboratorial	30,00
Total:	162,00

Obtenção de frequência

Theoretical-practical assessment (with a minimum grade of 10), through 2 tests (85%), Seminar Reports (15%). The minimum grade in each of the two tests is 10 values. The recovery of each of the tests can be carried out in the period of Exam Season.

Laboratory assessment (with a minimum average score of 10 points): 11 Laboratory Work. In order to pass the laboratory component, students will have to guarantee the delivery of all laboratory work and a minimum attendance of 80 percent.

IMPORTANT: Failure to meet the delivery dates implies a penalty of 5% of the note for each day of delay.

Fórmula de cálculo da classificação final

Final Classification=Theoretical-practical (50%) + Laboratory (50%)

Students who obtain a Final Classification higher than 17 will be subject to an oral test to assess their knowledge. In case the student is not interested in defending his grade, he will be assigned a final classification of 17 values.