Удаление сломанного метчика

//Удаление сломанного метчика

Сломанные метчики, которые застряли в заготовке, могут быть удалены без повреждения компонентов. Для этого используются многие методы, наиболее распространенными из которых являются:

  • Используя извлекающее метчик устройство.
  • Электроразрядная обработка (EDM) / (эрозионные свечи).
  • Использование дезинтегратор метчика.
  • Наваривание гайки на выступающую часть сломанного метчика.
  • Высверливание сломанного метчика,  используя сверло с твердосплавным наконечником.

Твердосплавное винтовое сверло

Это сверло разработано специально для разбуривания сломанных метчиков и других материалов с твердостью <72 Rc. Рекомендуемая скорость сверления: 1500 — 3000 оборотов в минуту. Необходимости в охлаждающей жидкости нет.


  1. Используя шпильку с твердосплавным шаровидным наконечником, растереть полукруглый уступ сердечника сломанного метчика. Это обеспечивает центральную точку (место) для размещения твердосплавного сверла и предотвращает его  смещение. Эта операция очень важна для успеха последующего бурения.
  2. С помощью твердосплавного сверла подходящего диаметра со скоростью от 1500 до 3000 оборотов в минуту и устойчивой и непрерывной подачей вручную, высверлить стержень сломанного метчика. Очищать стружку и обломки метчика с помощью сжатого воздуха через регулярные промежутки времени во время сверления. Этот процесс должен осуществляться только с помощью жесткой подствавки и с заготовкой прочно зажатой в тиски, желательно выполнять на фрезеровальном / сверлильном станке. Необходимости в охлаждающей или смазывающей жидкости нет.
  3. Используя тонкий шпатель  или острый инструмент, удалить оставшиеся части метчика. Очистить резьбовые отверстия сжатым воздухом и еще раз прокрутить резьбу в отверстии.
Обсудить задачу


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