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    Hob

    Hob

    Word:[Big][Middle][Small] Mobile page qrcode 2017/11/23     Viewed:    

      Hob
      Product model: complete model
      Product application: shield cutting tools for Metro and tunnel machinery
      Classification: shield cutter
      Product introduction:
      By subway, tunnel shield cutter series products of our company machinery sales, the alloy cutter selection of new powder metallurgy materials, wear resistance and impact toughness is better, can effectively cut a variety of rock mass and the formation of metal alloy structural steel; excellent selection of cutter body material.
      The layout of the cutter of the shield machine and the shape of the hob of the shield machine are very important in the design of the shield machine. The tool layout and the shape of the tool are suitable for the geological conditions of the application engineering, which directly affects the cutting effect, the unearthed condition and the driving speed of the shield machine.
      The disc hob mounted on the cutter head is tightly pressed on the rock surface under the action of Jack. With the rotation of the cutter head, the disc hob revolves around the central axis of the cutter and rotates around its own axis. The hob cutter thrust, torque, cut out a series of concentric grooves in the face. When the force exceeds the strength of the rock, the disc cutter tip of rock under direct crushing, tip penetration rock formation, further compression fracture zone and radial crack, when the cutter spacing is S to meet certain conditions, the adjacent rock crack extension between hob and connecting, formation of rock debris and caving, disc cutter complete a rock breaking process.


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