№2 (25), 2013. ТЕХНОЛОГИИ И ОБОРУДОВАНИЕ ДЛЯ МАШИНОСТРОИТЕЛЬНОГО ПРОИЗВОДСТВА

Tereshin M V

Specifics of using HSS drills under varying cutting parameters

Experimental results of tool life testing of hss drills are presented when drilling grey cast iron under varying cutting parameters was made. The possibility of increasing and decreasing of overall durability is showed. The conception of “favorable” and “unfavorable” switching between different cutting parameters is introduced. The choice of failure criterion is validated.

Keywords: drill wear, wear resistance, favorable and unfavorable switching, peak temperature, failure criterion.

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