Redesign and new design of a tooling to avoid vibrations in a drilling process

• Main Authors: Arana Semperena, Igor, Zudaire San Martin, Gorka
• Format: Others
• Language: English
• Published: Högskolan i Skövde, Institutionen för ingenjörsvetenskap 2020
• Subjects: Mechanical Engineering; Maskinteknik
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-18809

This paper presents the analysis of the vibrations created in a tooling during a drilling operation, by using indexable drills and how each variable affect in its reduction. It also shows a new design for the used tooling with the different aspects it offers. The objective followed during the development was to reduce the vibrations of the system below 5 μm, and therefore, make the process safer for the inserts and better for the tolerances and accuracy. The used method was to first study the drilling process and identify all the variables affecting to the system. Then, the analysis of the vibrations and the mass influence have been done, to continue with the possibility of adding a rubber platform, to finally, study the option of changing the transducer. Also, the design and dimensioning of the new tooling has been done. The key results of these analysis were that the mass and the rubber platform have not any influence on the vibration reduction because of the domain of the stiffness. So, changing the transducer is the only option to reduce the vibration with any tooling.