Проектирование круглых протяжек Вариант 17

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-steel 40; hardness when stretching HB=217, workpiece - after tempering; hole for stretching treated with a drill; hole diameter before stretching (mm) do=46,4; hole diameter after stretching D=48; surface roughness parameter Ra=1,6; length of stretching l=45 mm.
2. Machine: horizontal broaching, model 7B520; pulling force of the machine Q = 196200 N; maximum stroke length of the rod Lmax = 1600 mm; operating speed range 1.6-11.5 m / min; machine condition-satisfactory; broaching is fixed in a quick-change Chuck.
3. Character of production-small-scale.
4. The length of the broach, permissible for the tool shop and correspondence Department, not more than 1500 mm.