Mechanics of Cutting and Boring. Part 2: Kinematics of Axial Rotation Machines

• Main Author: Mellor,Malcolm
• Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
• Format: Text
• Language: English
• Published: 1976
• Subjects: Construction Equipment; Materials & Supplies; *CUTTING TOOLS; *DRILLING MACHINES; KINEMATICS; RATES; ROCK; TUNNELS; TUNNELING; EXCAVATION; AUGERS; CUTTING; EARTH HANDLING EQUIPMENT; PERMAFROST; EARTH PENETRATING DEVICES; permafrost
• Online Access: http://www.dtic.mil/docs/citations/ADA027279; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA027279

This report, which is one of a series on the mechanics of cutting and boring in rock, deals with the kinematics of machines such as rotary drills, augers, tunnel boring machines, corers, and raise borers, in which the rotary cutting unit revolves about an axis that is parallel to the machine's direction of advance. The discussion and analysis cover the geometry and motion of various components of the cutting system, including such topics as tool trajectories, tool speeds, motions of the more complicated mechanisms, chipping depth, penetration rates, production and clearance of cuttings, tool angles, and spatial distribution of cutters. Worked examples are given to illustrate the application of various equations to practical problems. (Author) See also Part 1, AD-A010 634.