Проектирование круглых протяжек Вариант 2

GRECHISHNIKOV V. A., CHEMBARISOV N. And.,
SKHIRTLADZE A. G., STUPKO V. B., HISAMUTDINOV R. M., Matveev V. N., sukhinina L. A., LARIONOV D. N.
THE DESIGN OF CUTTING TOOL
Tutorial to perform
course project on discipline
«Cutting tool»

Source data:
1. Stretched workpiece: material-cast iron 45x GOST 1412-79; hardness when stretching HB=217, the workpiece - after normalization; hole for stretching treated with a drill; d0=32.2 N12 (+0.19); D=33H7 (+0.050); Ra=3.2; L=50 mm.
2. Machine: horizontal broaching, model 7B520; cartridge - automatic quick-change, FROM= 20000 kg; the maximum stroke of the carriage or slider 1600mm, min. size from the end of the broach shank to the first cutting tooth L1=200 + h`.
3. Character production-mass.
4. The length of the broach, permissible for the tool shop and correspondence Department, not more than 1500 mm.