Thrust Force And Torque
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Determination of Drilling Rate Index Based on Rock Strength Using Regression Analysis
Abstract: Drillability is influenced by many factors, including machine parameters and rock properties. The main machine parameters for drilling include rotational speed, thrust force, torque and flush pressure. The specific rock characteristics that affect penetration rate comprise uniaxial compressive strength (UCS), tensile strength, Young’s modulus, ha
An. Acad. Bras. Ciênc.. Publicado em: 14/10/2019
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2. Desempenho de Ferramentas Reafiadas - Furação
The present work evaluated the performance of step drills, new and after regrinding. The way of regrinding the drills after they reached the end of tool life criterion was also varied. The following variables were also considered: type of coatings (uncoated, TiAlN e AlCrN) and the routine of re-coating them after regrinding (no recoating, recoating over the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2011
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3. Um estudo comparativo do comportamento das afiações conica e conica radial (racon) em brocas helicoidais de aço rapido / A comparative study of conical and radiused conventional point (racon) behaving in high speed stell twist drill
The main goal of this work is to study the behaving of Racon (radiused conventional point) and Conical (conventional) drill points in high speed stell twist drills and analyse their performance, trying to correlate them to their geometrical features. For this purpose, tests with two different machinability materiais, the SAE 4340 and SAE 1045 steeIs, were ca
Publicado em: 1996
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4. MotX, the channel component of the sodium-type flagellar motor.
Thrust for propulsion of flagellated bacteria is generated by rotation of a propeller, the flagellum. The power to drive the polar flagellar rotary motor of Vibrio parahaemolyticus is derived from the transmembrane potential of sodium ions. Force is generated by the motor on coupling of the movement of ions across the membrane to rotation of the flagellum. A