Análise do efeito da mola tipo duplo C invertido no controle de posicionamento do porta ferramenta assistido de Javarez e Duduch

Abstract

This paper presents ultraprecision machining tests performed with a new assisted tool holder model (ATH) that uses a piezoelectric actuator for displacement, a capacitive sensor to correct possible shifts of errors, an associated PID control system and a movement damping system through double C inverted springs. Bench tests on empty (without material to be machined) and actual test cut allowed a performance review. Machining operations were conducted with different signal waves with preset forms, such as: sine, square, triangular and sawtooth waves. By comparing the user-required signal data (theoretical) and signal obtained by capacitive sensor (real), it was analyzed the displacement generated as a function of time and the effect of the double C inverted springs, validating the mechanical design and PFA control system.