Accession Number : ADA113931

Title :   Mechanics of Cutting and Boring. Part 7. Dynamics and Energetics of Axial Rotation Machines,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Mellor,Malcolm

PDF Url : ADA113931

Report Date : Dec 1981

Pagination or Media Count : 47

Abstract : This report deals with force, energy and power in machines such as drills and boring devices, where the cutting head rotates about a central axis while penetrating parallel to that axis. Starting from a consideration of the forces developed on individual cutting tools, or segments of cutters, the thrust and torque on a complete cutting head is assessed, and simple relationships between thrust and torque are derived. Similarly, the energy and power needed to drive the cutting head are estimated and related to tool characteristics. Design characteristics of existing machines are compiled and analyzed to give indications of thrust, torque, power, effective tool forces, nominal thrust pressure, power density, and specific energy. (Author)

Descriptors :   *Cutting, *Drilling, Cutting tools, Drills, Drilling machines, Force(Mechanics), Rock, Thrust, Dynamic pressure, Power, Torque, Energy, Requirements, Conveyors, Augers, Dynamics, Energetic properties, Machines, Rotation, Axes

Subject Categories : Machinery and Tools
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE