Проектирование протяжки прямобочных шлицев Вариант 24

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»

1. Stretched workpiece: material – steel 30x hardness when stretching HB=268, state – after annealing, the hole for stretching obtained by countersinking; diameter of the hole before stretching (mm) - d0=32.5 mm; outer diameter of the slots D=38+0.046 mm; inner diameter of the slots d=33-0,17, width of the slot cavities b=3.5 (+0.027), the number of slots z=16, chamfer size 0,5x45, roughness parameter surface d = √RA=1,6; d = √RA=1,6; b = √RA=6,3; stretching length - LG=55 mm.
2. Machine: model 7A510; pulling force of the machine = 196000N; maximum stroke length of the rod St= 1600 mm; operating speed range 1.5-11.5 m / min, satisfactory condition. Cartridge type quick-release.
3. Character of production of a detail-large-scale.
4. The length of the broach, permissible for the tool shop and correspondence Department, not more than 1500 mm.