Разработка комплекта технологической документации для детали Т7.92.3425.411.000.73

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Оглавление
1 Общий раздел. 3
1.1 Описание и технологический анализ конструкции детали. 3
1.2 Обоснование типа производства. 5
2 Технологический раздел. 7
2.1 Выбор заготовки. 7
2.2 Разработка выбранного варианта технологического процесса. 10
2.3 Расчет межоперационных припусков. 14
2.4 Выбор оборудования, оснастки, вспомогательного и мерительного инструмента. 17
2.5 Расчет режимов резания. 18
2.6 Расчет норм времени. 21
2.7 Создание программы для ЧПУ в среде Gibbs CAM. 22
3. Проектирование установочно-зажимного приспособления 24
3.1 Назначение и принцип действия приспособления. 24
3.2 Расчет усилия зажима заготовки. 24
3.3 Расчет коэффициента надежности закрепления. 25
3.4 Расчет погрешности установки заготовки в приспособлении 26
3.5 Конструирование специального средства измерения. 27
Список литературы. 30
Приложение

1 Общий раздел.
1.1 Описание и технологический анализ конструкции детали.
1.1.1 Описание конструкции детали.
Деталь «юбка» относится к деталям силовым деталям, входящим в состав крыла легкомоторного самолета типа АН-2. Она может изготавливаться из алюминиевых сплавов. Данная деталь установлена в конце консоли крыла и предназначена для соединения законцовки непосредственно с крылом.
1.1.2 Данные о материале детали.
С целью повышения надежности самолетов разработаны новые высокопрочные алюминиевые деформируемые сплавы системы Аl–Zn–Mg–Сu и среднепрочные сплавы системы Аl–Cu–Mg. Эти сплавы имеют повышенные параметры вязкости разрушения и трещиностойкости, сопротивления усталости и коррозионной стойкости и обладают повышенными прочностными свойствами. Наиболее перспективными для авиации яв ляются следующие марки: В95пчТ2, В95очТ2, 1973, 1933 системы Аl–Zn–Mg–Сu и 1161, 1163 системы Аl–Cu–Мn. Сплавы 1973, 1933 и 1161 дополнительно содержат цирконий. Сплавы, легированные литием, обладают пониженной плотностью. 27 Свариваемый сплав 1420 системы Аl–Mg–Li–Zr отличается самой низкой плотностью (d=2470 кг/м3) и обеспечивает высокую удельную прочность σ в/d=17 км), а также снижение массы конструкций до 20-25%. Предел прочности сварных соединений σ в составляет примерно 0,8σ в основного материала.
Разработаный сплавы1430 и 1933Т3 на базе системы Аl–Mg–Li–Cu–Zr с более низкой (на 7-8%) плотностью и более высоким (на 10%) модулем упругости и достаточно высокими параметрами сопротивления усталости и вязкости разрушения, по сравнению со сплавами системы Аl–Cu–Mg типа Д16.

Свойства алюминиевых деформируемых сплавов

Марка сплава Вид заготовки σ d, МПа σ 0,2, МПа δ , %
В95пчТ2 лист 510-540 450-480 10-12
1973Т2 лист 550-570 500-520 10-12
1933Т3 штамповка 450 390 8
1161НТМО плита 450 340 12
1161Т панель 450 340 12
1163Т7 плита 460 345 12

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