Проектирование квадратных протяжек Вариант 72

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.The routed workpiece: material: Steel 45

Tensile hardness HB 210
The hole for stretching is treated with a drill;
The diameter of the hole to stretch d0 = 32, 8h12mm
Surface roughness parameter Ra 1,6
Stretch length l =35mm
2.Machine: horizontal broaching, model 7A510
The pulling force of the machine From=100 kg;
The maximum stroke of the carriage broaching machine Lmax = 1250mm
Cartridge type B (quick-change)
Operating speed range 1.5-25 m / min
The plant status is satisfactory
The broach is fixed in the automatic replacement of the cartridge.
Cartridge type: quick-release
3.The nature of production-large-scale.
4.The length of the broach, permissible for the tool shop and grinding Department, is not more than 1500mm.