Проектирование протяжки прямобочных шлицев Вариант 32

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=207, the hole for stretching is processed by a drill; the diameter of the hole before stretching (mm) - d0=29 mm; the diameter of the hole after stretching D=30H7 mm; the outer diameter of the slots d=33H12, the width of the slot cavities b=4,709 (+0.05), the number of slots z=10, the surface roughness parameter D = √Ra=6.3; d = √Ra=6.3; V = √RA=6,3; stretching length - LG=50 mm.
2. Machine: model 7B520; the pulling force of the machine at= 100 kN; the maximum stroke of the carriage of the broaching machine Nst= 1600 mm; broaching is fixed in an automatic replaceable cartridge.
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.