Button bit - Open Access .click

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Optimal button arrangement of a percussion drill bit and its operating condition for improving drilling efficiency

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2017
This paper proposes an optimal button arrangement of a percussion drill bit and its operating condition to improve drilling efficiency. A new evaluation method is introduced for the button arrangement that utilizes the superimposed impact area, blank area, and drilling deviation moment as the quantitative indices to evaluate the impact of buttons on ...
Hoon Kang +5 more
openaire +1 more source

Performance Evaluation of Button Bits in Coal Measure Rocks by Using Multiple Regression Analyses

Rock Mechanics and Rock Engineering, 2015
Electro-hydraulic and jumbo drills are commonly used for underground coal mines and tunnel drives for the purpose of blasthole drilling and rock bolt installations. Not only machine parameters but also environmental conditions have significant effects on drilling. This study characterizes the performance of button bits during blasthole drilling in coal
openaire +2 more sources

Cobalt metal-organic framework modified carbon cloth/paper hybrid electrochemical button-sensor for nonenzymatic glucose diagnostics

Sensors and Actuators B: Chemical, 2021
Xiaofeng Wei, Xiangying Sun, Bin Liu
exaly

Modeling of force-penetration curves for a button bit during impact penetration into rock