Comparison of Rotary and Linear Cutting Methodology in Determining Specific Cutting Energy of Granite
- Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843; OSTI
- Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843
Single polycrystalline diamond compact (PDC) cutting is a practical technique to understand the rock–tool interactions in drag-bit-type geothermal drilling operations. This paper introduces a rotary cutting method to determine specific cutting energy (SCE) and compares it with the conventional linear cutting method. In this work, granite is selected to represent hard rock formations in geothermal drilling. Cutting tests are conducted on a Computer Numerical Control (CNC) machine with a realistic cutting speed of 12.7 m/min and several chip loads ranging from 0.08 to 0.25 mm. The cutting force is measured using a dynamometer and then converted to specific cutting energy (SCE). The results show that the rotary method produces an inverse relationship between SCE and chip load, whereas the linear method shows the opposite. As a result, the produced SCE by the rotary method tends to be lower than that of the linear method at a higher chip load at and over 0.16 mm. The difference may be attributed to the cutting configuration and associated force components.
- Research Organization:
- Texas A & M Univ., College Station, TX (United States). Texas A & M Engineering Experiment Station
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- DOE Contract Number:
- EE0008605
- OSTI ID:
- 1980655
- Journal Information:
- Journal of Manufacturing Science and Engineering, Journal Name: Journal of Manufacturing Science and Engineering Journal Issue: 11 Vol. 143; ISSN 1087-1357
- Publisher:
- ASME
- Country of Publication:
- United States
- Language:
- English
Similar Records
Geometry and material choices govern hard-rock drilling performance of PDC drag cutters.