Figure 1. - The profiles of the milling cutters for grooves.

Figure 2. - The initial cylinder.

Figure 3. - Cylindrical propeller HELIX1.

it is realized the tooth profile of the snail (generating curve) – SKETCH 2 –which is wrapped up the snail propeller (steering curve) with SWEEP (fig.4);

Figure 4. - Section which is wrapped up on the direction propeller.

it is generated the propeller suitable to the tooth profile of the milling cutter (normal to the turn wrapping up) - HELIX 2 (fig.5);

Figure 5. - Propeller with tooth profile.

it is realized the form BOSS-SWEEP of the chips canal in accordance with calculated geometrical elements (SKETCH 3) (fig.6);

Figure 6. - The SWEEP shape of worm.

•it is cut the chips canal with this form along the propeller (CUT SWEEP) (fig. 7);

Figure 7. - Definition of the shape CUT-SWEEP.

•it is realized the backed off on the tooth tip with CUT and PATTERN;

Figure 8. - Shape of the chip canal.

•it is multiplied the chips canals form suitable to the teeth number of the milling cutter with PATTERN_CIRCULAR (fig.9);

Figure 9. - Hobbing cutter with the multiplied chips canals.

•It is completed the geometrical form with the bore hole with wedge and with centered shoulders.

Figure 10. - Image of the hobbing cutter.