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APPLY FOR INFORMATIOIN

 
PROJECTS

Own development model for Integrated Management of Technological Innovation.

POPJIM

Plug and Produce components to Adaptative Control

POPJIM

Las estructuras aeronáuticas presentan formas complejas y paredes de baja flexibilidad que, junto a la baja maquinabilidad de algunas aleaciones como el titanio, dificultan en gran medida el proceso de mecanizado. Esto es un factor crítico, debido al alto valor añadido que presentanpresenta habitualmente este tipo de piezas. En los procesos de fresado, las vibraciones generadas por el chatter plantean un grave problema que obstaculiza el proceso de corte y pone en peligro la calidad de la superficie de la pieza, limitando la vida tanto de la herramienta como de los componentes mecánicos de la máquina. Este efecto auto-excitado se origina por la regeneración del espesor de viruta que surge entre dos pasadas de filo consecutivas de la herramienta. Con el fin de obtener mayores niveles de productividad, se han desarrollado métodos para la predicción de la estabilidad y diferentes estrategias para solucionar los problemas de chatter. Un enfoque consiste en modificar las condiciones de corte del proceso. Utilizando los diagramas de estabilidad como referencia, se pueden definir la velocidad de giro óptima de la herramienta que permita aumentar la capacidad de corte. Otras técnicas que actúan sobre las condiciones del proceso son la variación continua de la velocidad de corte, la variación del ángulo de la hélice de la herramienta o el paso no uniforme de la herramienta.

 

THE CHALLENGE

In order to achieve higher production levels, several methods have been developed that predict stability. There are also different strategies to tackle chatter. One approach is to modify the cutting conditions of the process. Using the stability diagrams as a reference, the optimal rotation speed of the tool can be set to increase the cutting capacity. Other techniques that act on the conditions of the process are the continuous variation of the cutting speed, variation of the helix angle of the tool or an uneven pitch of the tool.

THE RESULT

Improvement in process productivity and quality
The main outcome of this project has been the development of a new generation of self-tuning components according to the machining process which can be fitted easily on machines, tools or tool holders to improve productivity and quality of the processes in a production chain. The following specific developments were materialised: a lathe with two active mechatronic connections (JIMs), a tool holder with an integrated JIM, tooling device for light alloys with a JIM and a tooling device for large machinery with two integrated AIMs.

Easy installation and more complex operations
The developed "plug-and-produce" components have built-in sensors, advanced actuators, easy-to-use software and, in several applications, intelligent materials. The easy installation in machine tools allows their functionality and productivity to be increased, so more complex operations are possible while at the same time risk of defects and accidents are reduced.

PARTNERS

The project has the participation of 10 entities

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