Investigation on rock cutting characteristics of spherical-tooth hob

• Autorzy: Zhang Xuhui , Long Zhaomin , Liao Yashi , Long Jinjing , Liu Jifu

Identyfikatory

DOI

10.37190/msc222908

• Języki publikacji: EN

Abstrakty

EN

To study the rock cutting characteristics of spherical-tooth hob, the rock cutting process induced by the spherical-tooth hob is analyzed based on the finite element simulation and the rock cutting experiments. Then the rock breaking states, rock cutting forces and rock cutting efficiency caused by the spherical-tooth hob under different penetrations are obtained. The results show that a cutting groove and a series of pits in the cutting groove will be produced when the penetration exceeds 9 mm. At such penetration, the spherical teeth and the cutter ring can cooperate to cut rock. The cutting forces curves show obvious fluctuation and the peak values of cutting forces correspond to the moment when a spherical tooth intrudes into the rock sample totally. The cutting forces increase with the growth of the penetration and the increase speed turns fast when the penetration exceeds 9 mm. With the increase of penetration, the specific energy consumption of the spherical tooth hob first decreases and then increases. It exists an optimal penetration of 12 mm to achieve the highest rock cutting efficiency.

Słowa kluczowe

EN

spherical-tooth hob; penetration; rock cutting force; specific energy consumption

• Wydawca: Wydział Geoinżynierii, Górnictwa i Geologii, Instytut Górnictwa Politechniki Wrocławskiej
• Czasopismo: Mining Science
• Rocznik: 2022
• Tom: Vol. 29
• Strony: 121--144
• Opis fizyczny: Bibliogr. 36 poz., rys.

Twórcy

autor

Zhang Xuhui

• College of Engineering and Design, Hunan Normal University, Changsha, 410081, China

autor

Long Zhaomin

• College of Engineering and Design, Hunan Normal University, Changsha, 410081, China
• College of Mechanical and Electrical Engineering, Central South University, Changsha Hunan 410083, China

autor

Liao Yashi

• College of Engineering and Design, Hunan Normal University, Changsha, 410081, China

autor

Long Jinjing

• College of Engineering and Design, Hunan Normal University, Changsha, 410081, China

autor

Liu Jifu

• College of Engineering and Design, Hunan Normal University, Changsha, 410081, China

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