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MAPA – AUTOMAÇÃO INDUSTRIAL - 52/2023
Um centro de usinagem manual foi automatizado e passou a ser controlado por um CLP
com as funções de avanço, retorno, sentido de giro, velocidade de avanço, comando
emergência e sensor de peça, sendo controlados de acordo com a lógica descrita no
funcionamento da máquina:
Quando uma peça a ser usinada é posicionada na morsa manual do centro de usinagem
e pressionando-se o botão liga, o centro de usinagem passa a operar somente se o
cabeçote de usinagem estiver na posição inicial (determinada pelo sensor indutivo “h”) e
o sensor de peça (SP) detecte a mesma em sua posição de usinagem.
Uma vez iniciada a usinagem, o motor da coluna (MC) deve ser acionado no sentido
descendente e em alta velocidade, com o motor da furadeira (MF) em rotação no sentido
horário até a posição “b1”, onde a broca continua a avançar, porém, em baixa velocidade
de MC, pois neste instante a broca deve usinar a peça. A Figura 1 mostra uma
representação do equipamento.
A S S E S S O R I A A C A D Ê M I C A
A C A D Ê M I C A
(43) 99668 - 6495
(43) 98816 - 5388
Figura 1: Centro de usinagem automatizado.
Ao finalizar a usinagem, estado detectado pelo sensor b2, a broca deve girar no sentido
anti-horário e o motor da coluna deve ser acionado no sentido ascendente (para cima)
até encontrar novamente o sensor “h”.
Caso seja pressionado o botão desliga simultaneamente com o botão liga, nada deve
ocorrer, sendo de prioridade para o desliga a ação.
Caso o botão emergência seja pressionado, o processo deve parar em qualquer etapa
em que esteja e quando liberado este botão, o processo retoma de onde parou.
Se pressionado o botão desliga ou a peça sair de sua posição, em qualquer etapa do
processo, o mesmo deve retomar do início e desligar todas as saídas do controlador.
ATIVIDADE MAPA:
Apresentar o diagrama FBD deste processo de automação do centro de usinagem
produzido no ambiente ZELIO SOFT.

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Automatização de centro de usinagem controlado por CLP

  • 1. MAPA – AUTOMAÇÃO INDUSTRIAL - 52/2023 Um centro de usinagem manual foi automatizado e passou a ser controlado por um CLP com as funções de avanço, retorno, sentido de giro, velocidade de avanço, comando emergência e sensor de peça, sendo controlados de acordo com a lógica descrita no funcionamento da máquina: Quando uma peça a ser usinada é posicionada na morsa manual do centro de usinagem e pressionando-se o botão liga, o centro de usinagem passa a operar somente se o cabeçote de usinagem estiver na posição inicial (determinada pelo sensor indutivo “h”) e o sensor de peça (SP) detecte a mesma em sua posição de usinagem. Uma vez iniciada a usinagem, o motor da coluna (MC) deve ser acionado no sentido descendente e em alta velocidade, com o motor da furadeira (MF) em rotação no sentido horário até a posição “b1”, onde a broca continua a avançar, porém, em baixa velocidade de MC, pois neste instante a broca deve usinar a peça. A Figura 1 mostra uma representação do equipamento. A S S E S S O R I A A C A D Ê M I C A A C A D Ê M I C A (43) 99668 - 6495 (43) 98816 - 5388
  • 2. Figura 1: Centro de usinagem automatizado. Ao finalizar a usinagem, estado detectado pelo sensor b2, a broca deve girar no sentido anti-horário e o motor da coluna deve ser acionado no sentido ascendente (para cima) até encontrar novamente o sensor “h”. Caso seja pressionado o botão desliga simultaneamente com o botão liga, nada deve ocorrer, sendo de prioridade para o desliga a ação. Caso o botão emergência seja pressionado, o processo deve parar em qualquer etapa em que esteja e quando liberado este botão, o processo retoma de onde parou. Se pressionado o botão desliga ou a peça sair de sua posição, em qualquer etapa do processo, o mesmo deve retomar do início e desligar todas as saídas do controlador. ATIVIDADE MAPA: Apresentar o diagrama FBD deste processo de automação do centro de usinagem produzido no ambiente ZELIO SOFT.