Please use this identifier to cite or link to this item:
https://hdl.handle.net/11681/9342| Title: | Mechanics of cutting and boring : part VII, dynamics and energetics of axial rotation machines |
| Authors: | Mellor, Malcolm. |
| Keywords: | Cutung tools Machines Drilling Mechanics Drilling machines Permafrost Frozen ground Drills Rock drilling Excavation Ice excavation Permafrost excavation |
| Publisher: | Cold Regions Research and Engineering Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | CRREL report ; 81-26. |
| Description: | CRREL Report Abstract: This report deals with force, torque, 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 cosideration 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 arc 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. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/9342 |
| Appears in Collections: | CRREL Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| CR-81-26.pdf | 4.41 MB | Adobe PDF |  View/Open |