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Communication Dans Un Congrès Année : 2011

EXTERNAL THREAD MILLING ON BOVINE CORTICAL BONE

Résumé

The most commonly used implants for orthopedic and orthodontic applications are the metallic ones, specially, those made of titanium. In spite of presenting high mechanical strength and remaining chemically inert, these implants are not bio-absorbable and are susceptible to biological rejection. An alternative that would eliminate such complications would be the use of bone screws. The purpose of this paper is to study the thread milling process on a bovine cortical bone insert. The experiment was performed on a CNC machining center, using a helical thread tool with multiple cutting flutes. The helical trajectory is constructed with several linear interpolations to be used in regular CNC machines without helical interpolation. The cutting forces involved in the process were measured using a dynamometer and the maximum forces in each flute is analyzed and presented in the article. Bending component force in the tool showed to be very low comparing to the resultant force. Forces Tangential to the thread surface have values around 50 N while resultant force achieved 57N. It is analysed the thread quality and cutting forces and it shows that the bovine cortical bone behavior during the machining process does not differ much from that presented by most common materials.
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Dates et versions

hal-03212871 , version 1 (30-04-2021)

Identifiants

  • HAL Id : hal-03212871 , version 1

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Paula Dias Souza, Fabio Campos de Oliveira, Anna Carla Araujo. EXTERNAL THREAD MILLING ON BOVINE CORTICAL BONE. VII Congresso Nacional de Engenharia Mecânica, 2011, São Luis, Brazil. ⟨hal-03212871⟩
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