Современные автоматы имеют также устройство для постоянного контроля наиболее важных технологических параметров, таких как длина заготовки и усилия штамповки на каждом переходе. Устройство работает на базе микропроцессора, в память которого в процессе наладки автомата 106 вводят эталонные значения упомянутых параметров. В случае существенных отклонений длины заготовки от номинала или превышения усилия штамповки на той или иной позиции процесс штамповки прекращается.
Подготовленный металл заправляется в правильно-задающее устройство (ПЗУ) штамповочного автомата, которое периодически за каждый ход ползуна подает его на величину, соответствующую длине исходной заготовки в зону действия отрезного ножа.
Отрезка мерной заготовки осуществляется сдвигом. Далее заготовка транспортируется по позициям автомата, на которых установлены деформирующие инструменты (пуансоны, матрицы, выталкиватели), и постепенно превращается в деталь. Число позиций может достигать пяти. В ходе штамповки все позиции работают одновременно, поэтому за каждый ход автомата получают деталь.
Примером штамповки на автомате может служить изготовление накидной гайки М18х1г5 на пятипозиционном автомате (рис. 3.31). Исходным материалом является стальная фосфатированная проволока в бунтах из стали Юкп по ГОСТ 10702-78. Если вы решили расширить свое производство и задумали строительство, тогда бытовка для стройки вам пригодится.
Заготовку отрезают сдвигом с помощью ножа и подают на линию штамповки к захватам механизма переноса. Первая пара захватов передает заготовку на первую позицию автомата, где производят осадку, в ходе которой заготовка принимает вид усеченного конуса с небольшими углублениями (наметками) для центрирования пуансонов на обоих торцах. Далее комбинированным выдавливанием формируют предварительно две оппо- зитные полости. Затем (на третьей позиции) выдавливанием углубляют обе полости, причем одновременно с выдавливанием верхней из них формируется внешний шестигранник. Происходит также существенное утонение перемычки между полостями, а высота детали приближается к окончательной. На четвертой позиции пробивают перемычку, а на пятой калибруют всю деталь до получения окончательных размеров.
Производительность такого процесса не менее 100 шт. в минуту, коэффициент использования металла приближается к 0,95.
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SET cpt=(cpt+1)
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VALUES ('b05uls605esa2pkpt1jj8f17p1', 0, '1734801074'