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Vida útil da ferramenta diamantada em SPDT de policarbonato
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ISBN10: 6209427502
ISBN13: 9786209427503
Publisher: Edicoes Nosso Conhecimento
Published: Feb 13 2026
Pages: 88
Weight: 0.28
Height: 0.21 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786209427503
Publisher: Edicoes Nosso Conhecimento
Published: Feb 13 2026
Pages: 88
Weight: 0.28
Height: 0.21 Width: 6.00 Depth: 9.00
Language: Portuguese
Os plásticos são materiais muito comuns que podem ser torneados com diamante e amplamente utilizados em óptica e nas nossas aplicações ultraprecisas. Os parâmetros de textura da superfÃcie (rugosidade e ondulação) são considerações muito importantes nessas aplicações. É feita uma tentativa de analisar as fases da vida útil da ferramenta de diamante e as suas caracterÃsticas de desgaste durante o torneamento de ponto único com diamante de policarbonato (plástico) e otimizar vários parâmetros de usinagem, como taxa de avanço da ferramenta, profundidade de corte e velocidade do fuso para a qualidade da textura da superfÃcie. As experiências mostraram que não houve desgaste do cratera, mas observou-se uma quantidade muito pequena de desgaste do flanco após a usinagem de cerca de 7 km. À medida que a usinagem avançava, a ponta da ferramenta começou a ficar plana a partir do ponto de corte, aumentando assim o valor da rugosidade da superfÃcie. Assim, o valor da rugosidade da superfÃcie (70 nm) foi mantido como critério para a falha da ferramenta. Portanto, a ferramenta falhou após cerca de 200 km de usinagem. Como o policarbonato é plástico, observa-se uma tendência linear tanto na rugosidade quanto na ondulação. Outra observação foi que o valor da rugosidade da superfÃcie diminui para velocidades do eixo até um certo limite e, em seguida, começa a aumentar. Para a profundidade de corte, o valor da rugosidade da superfÃcie aumenta para um determinado valor e, em seguida, diminui.
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