Проектирование квадратных протяжек Вариант 48

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:
The routed workpiece: material – SCH
Tensile strength HB 173
Harvesting – after the holiday
The hole for stretching is treated with a drill
The diameter of the hole before stretching – d_0=21, 2H12
The diameter of the hole at the corners-D=31, 1H7
Distance between sides-S=22H7
Surface roughness parameter Ra 3,2
Stretching length-l = 45 mm
Machine: horizontal broaching, model 7A510
Machine pulling force Q = 100000 H;
Max rod stroke length Max = 1250mm
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: A
Character of production-large-scale.
The length of the broach, permissible for the tool shop and grinding Department, is not more than 1500mm.