Publication: Diseño, análisis y prototipado de un mandrino para sujeción de piezas
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2018-07
Defense date
2018-07-03
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Abstract
La fabricación aditiva es considerada actualmente como una de las innovaciones
digitales más transcendentes en el transcurso de la Cuarta Revolución Industrial. Esta
técnica permite realizar réplicas volumétricas en diferentes materiales a partir de un
Diseño Asistido por Computador (CAD).
En el campo del mecanizado, el uso de mandriles expansibles reviste una gran
importancia, especialmente en las operaciones de torneado. El diseño de soluciones que
permitan una mejora eficiente de estos sistemas se ha convertido en una necesidad a
explotar.
El objetivo del proyecto es realizar un estudio de diseño, análisis y prototipado de un
mandrino especial de sujeción de piezas por expansión, fabricado en un compuesto
plástico, compatible con el modelado por deposición fundida de bajo coste. De este
modo, el proyecto persigue estudiar en profundidad las posibilidades mecánicas que
ofrece el sistema de sujeción diseñado para procesos de mecanizado por torneado y,
para ello, realiza una comparación entre los compuestos plástico y los aceros
contemplados en la normativa vigente.
Para tales fines, se han implementado varios análisis de esfuerzos tendentes a comparar
la fabricación de las pinzas expansibles de sujeción en diferentes materiales. El
comportamiento de la pinza diseñada se ha evaluado mediante análisis por el Método de
Elementos Finitos en estado estático y en estado de contacto no lineal.
Additive manufacturing is currently considered one of the transcendental digital innovations in the course of the Fourth Industrial Revolution. This technique allows making volumetric replicas in different materials using a Computer Aided Design. In the field of machining processes, the use of expandable mandrels has a great importance, especially when it comes to turning operations. In this regard, the design of solutions to boost the efficiency of these systems has become a need to be exploited. The main objective of the project is to carry out a study of the design, analysis and prototyping of a special mandrel for holding pieces by expansion, made of a plastic compound, compatible with low cost fused deposition modelling. Therefore, the project aims to study in depth the mechanical possibilities offered by the clamping system designed for machining processes by turning. Then, a comparison shall be made between the plastic compounds and the steels contemplated in the current regulations. For these purposes, several stress analyses shall be implemented to compare the manufacture of the expandable clamps of subjection in different materials. Finally, the behaviour of the designed clamp will be evaluated by analysis using the Finite Element Method in a static state and in a non-linear contact state.
Additive manufacturing is currently considered one of the transcendental digital innovations in the course of the Fourth Industrial Revolution. This technique allows making volumetric replicas in different materials using a Computer Aided Design. In the field of machining processes, the use of expandable mandrels has a great importance, especially when it comes to turning operations. In this regard, the design of solutions to boost the efficiency of these systems has become a need to be exploited. The main objective of the project is to carry out a study of the design, analysis and prototyping of a special mandrel for holding pieces by expansion, made of a plastic compound, compatible with low cost fused deposition modelling. Therefore, the project aims to study in depth the mechanical possibilities offered by the clamping system designed for machining processes by turning. Then, a comparison shall be made between the plastic compounds and the steels contemplated in the current regulations. For these purposes, several stress analyses shall be implemented to compare the manufacture of the expandable clamps of subjection in different materials. Finally, the behaviour of the designed clamp will be evaluated by analysis using the Finite Element Method in a static state and in a non-linear contact state.
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Keywords
Tecnología de fabricación, Fabricación aditiva, Diseño Asistido por Computador (CAD), Método de Elementos Finitos, Impresión 3D