The theory of constraints applied in a manufacture CAD-CAM system in the industry Metalworking-plastic

Authors

  • Luis Juiña Universidad Politécnica Salesiana
  • Víctor Hugo Cabrera Universidad Politécnica Salesiana
  • Salvatore Reina Escuela Politécnica Nacional

DOI:

https://doi.org/10.29019/enfoqueute.v8n3.167

Keywords:

theory of constrains, polymer, computerized numerical control, CAD, CAM

Abstract

In the following project, the theory of constraints was applied in order to implement a manufacture CAD-CAM system into the metal mechanic industry processes of polymers injection and blown of polymers. The research showed that the manufacture of the mold with the engraving took 223,17 hours. In the workflow for the manufacture of the mold, a restriction was found in the outsource service of CNC. It took 120 hours of the whole process and represent the 51,47 % the total time of tooling manufacturing. There is also a constraint found in the design time. It was 60 hours that corresponds to 26,88 % of the overall time. In order to reduce the time, a modern system of design in 3D and CAM was established to improve the model process of design and manufacture. A simulation by computational resource was applied to the plastic. The design was changed from 2D to 3D. The implementation was focused in the design. A software was installed to improve the speed of modeling methods with reliable information. In the manufacture of molds, a new CNC machine was acquired with three simultaneous axes to eliminate the outsource service. By acquiring the design system, the working time was diminished in 79% and regarding to the CNC process, the working time was improved in 88%.

Metrics

Downloads

Download data is not yet available.

References

Abisambra L. (2008). Aplicación de la Teoría de Restricciones a los Procesos de Producción de la Planta de Fundición de Imusa. Soluciones de Posgrado EIA, pp. 121-133.
Bodini G. (1992). Moldes y Máquinas de Inyección para la Transformación de Plásticos. México, McGraw-Hill.
Candal M. (2005). Integración CAD/CAE/CAM-PR en la Optimización del Diseño de Productos Plásticos. Ciencia e Ingeniería.
Cuatrecasas L. (2009). Diseño Avanzado de Procesos y Plantas de Producción Flexible, Barcelona, Bresca.
Fleitman J. (2007). Evaluación Integral para Implantar Modelos de Calidad. México, Pax México.
Goldratt E. (2005). La Meta, Madrid, Edigrafos.
Gómez S. (2010). SolidWorks. México. Alfaomega.
Groover M. (2008). Automation, Production Systems and Computer-Integrated Manufacturing. New Jersey. Prentice Hall.
Manual del Mecánico Industrial, Máquinas y Control Numérico. (2000). Madrid, Cultural.
Heizer J. (2010). Dirección de la Producción y Operaciones. Madrid. Pearson Education.
Juiña L. (2015). Implementación de un proceso de Sistema de Manufactura CAD-CAM en la sección matricería de la empresa COBIPLAST. MSc. tesis, Facultad de Ingeniería Química y Agroindustria, EPN., Quito, Ecuador.
Kalpakjian S. (2008). Manufactura, Ingeniería y Tecnología. México. Pearson.
Krajewski L. (2008). Administración de Operaciones. México, Pearson.
Niebel B. (2004). Ingeniería Industrial, Métodos, Estándares y Diseño del Trabajo. México. Alfaomega.
Richardson T. (2003). Industria del Plástico. Madrid. Paraninfo.
Sánchez S. (2001). Moldeo por inyección de termoplásticos. México, Limusa.
Tompkins J. (2011). Planeación de Instalaciones. México, Cengage Learning.
Serrano Rodriguez, Javier. 2008. Matemáticas Financieras . Bogota : Alfaomega, 2008.

Published

2017-06-30

How to Cite

Juiña, L., Cabrera, V. H., & Reina, S. (2017). The theory of constraints applied in a manufacture CAD-CAM system in the industry Metalworking-plastic. Enfoque UTE, 8(3), pp. 56 - 71. https://doi.org/10.29019/enfoqueute.v8n3.167

Issue

Vol. 8 No. 3 (2017)

Section

Miscellaneous

The articles and research published by the UTE University are carried out under the Open Access regime in electronic format. By submitting an article to any of the scientific journals of the UTE University, the author or authors accept these conditions.

The UTE applies the Creative Commons Attribution (CC-BY) license to articles in its scientific journals. Under this open access license, as an author you agree that anyone may reuse your article in whole or in part for any purpose, free of charge, including commercial purposes. Anyone can copy, distribute or reuse the content as long as the author and original source are correctly cited. This facilitates freedom of reuse and also ensures that content can be extracted without barriers for research needs.

 

This work is licensed under a Creative Commons Attribution 3.0 International (CC BY 3.0).

 

In addition, the journal Enfoque UTE guarantees and declares that authors always retain all copyrights to the original published works without restrictions [© The Author(s)]. Acknowledgment (BY): Any exploitation of the work is allowed, including a commercial purpose, as well as the creation of derivative works, the distribution of which is also allowed without any restriction.