Lecture

Mechanical Design Principles: Machining Processes and Tolerancing

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In course

ME-105: Introduction to mechanical design

Le cours de ME-105 vise à l'acquisition du langage normalisé de la communication technique en conception mécanique et d'une culture technique de base, via une revue des concepts, composants, et méthodologies, et la réalisation par les étudiants d'un projet ...

Description

This lecture covers the fundamentals of mechanical design, focusing on machining processes and dimensional tolerancing. It begins with a summary of machining techniques, including turning and milling, and discusses the principles of material removal and surface finish. The instructor explains the importance of cutting parameters, such as cutting speed and tool choice, and their impact on the quality of the finished product. The lecture also introduces the concept of dimensional tolerancing, emphasizing the need for precise specifications in engineering drawings. The differences between ideal and real parts are highlighted, along with the significance of tolerances in ensuring proper assembly and function. The instructor provides examples of how to calculate tolerances and the implications of different types of fits, such as clearance and interference fits. The session concludes with a discussion on the importance of understanding these principles for effective mechanical design and manufacturing processes.

Instructor

Sébastien Philippe Soubielle

Expertise Machine-tools -- Transfer machine-tools -- Special machines -- Wire tension management devices -- Machine safety (2006/42/CE) -- Microcellular metals Teaching & PhD Courses Introduction to mechanical design ME-105 The ME-105 course aims at acquiring the standardized language of the technical communication in the field of mechanical engineering and a basis in technical culture, through a review of the concepts, components, and methodologies, and the achievement by the students of a

Official source

Related concepts (32)

Quality control

Quality control (QC) is a process by which entities review the quality of all factors involved in production. ISO 9000 defines quality control as "a part of quality management focused on fulfilling quality requirements". This approach places emphasis on three aspects (enshrined in standards such as ISO 9001): Elements such as controls, job management, defined and well managed processes, performance and integrity criteria, and identification of records Competence, such as knowledge, skills, experience, and qualifications Soft elements, such as personnel, integrity, confidence, organizational culture, motivation, team spirit, and quality relationships.

Engineering tolerance

Engineering tolerance is the permissible limit or limits of variation in: a physical dimension; a measured value or physical property of a material, manufactured object, system, or service; other measured values (such as temperature, humidity, etc.); in engineering and safety, a physical distance or space (tolerance), as in a truck (lorry), train or boat under a bridge as well as a train in a tunnel (see structure gauge and loading gauge); in mechanical engineering, the space between a bolt and a nut or a hole, etc.

Mechanical engineering

Mechanical engineering is the study of physical machines that may involve force and movement. It is an engineering branch that combines engineering physics and mathematics principles with materials science, to design, analyze, manufacture, and maintain mechanical systems. It is one of the oldest and broadest of the engineering branches. Mechanical engineering requires an understanding of core areas including mechanics, dynamics, thermodynamics, materials science, design, structural analysis, and electricity.

Milling (machining)

Milling is the process of machining using rotary cutters to remove material by advancing a cutter into a workpiece. This may be done by varying directions on one or several axes, cutter head speed, and pressure. Milling covers a wide variety of different operations and machines, on scales from small individual parts to large, heavy-duty gang milling operations. It is one of the most commonly used processes for machining custom parts to precise tolerances. Milling can be done with a wide range of machine tools.

Engineering drawing

An engineering drawing is a type of technical drawing that is used to convey information about an object. A common use is to specify the geometry necessary for the construction of a component and is called a detail drawing. Usually, a number of drawings are necessary to completely specify even a simple component. The drawings are linked together by a master drawing or assembly drawing which gives the drawing numbers of the subsequent detailed components, quantities required, construction materials and possibly 3D images that can be used to locate individual items.

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