Cutting characteristics of twist drill having cutting edges for drilling and reaming

Okada, Masato; Asakawa, Naoki; Fujita, Yusuke; Nikawa, Makoto

doi:10.1007/s12206-014-0343-8

Cited by 15 publications

(6 citation statements)

References 15 publications

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“…Sorrentino [34] Battaglia [36] Li [37] DeVries [35] Weinert [33] Cardoso [40] Bağci [32] Bono [42] Bono [41] Drill-foil Thermocouple Bhowmick[52] TASKESEN [53] Ueda [43] Yang [44] Pérez [39] Dörr [56] Usama A [57] Reissig [25] Mills [26] Wright [27] Okada [46] Oezkaya [55] Beno [47] obtain drilling temperature remotely. There are many non-contact measurement methods, but the methods used in drilling are completely limited to infrared radiation.…”

Section: Tool-work Thermocouplementioning

confidence: 99%

Recent Advances in Drilling Tool Temperature: A State-of-the-Art Review

Zhu

Sun

Guo

et al. 2022

Chin. J. Mech. Eng.

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Drilling is regarded as the most complex manufacturing process compared with other conventional machining processes. During the drilling process, most of the energy consumed in metal cutting is converted to heat and increases temperature considerably. The resulting thermal phenomena are important since they influence the mode of deformation, the final metallurgical state of the machined surface, and the rate of tool wear. Hence, understanding the temperature characteristics in the drilling process is crucial for enhancing the drill performance and process efficiency. Extensive efforts have been conducted to measure and control the drilling tool temperature successively. However, very few studies have been conducted from a comprehensive perspective to review all the efforts. To address this gap in the literature, a rigorous review concerning the state-of-the-art results and advances in drilling tool temperature is presented in this paper by referring to the wide comparisons among literature analyses. The multiple aspects of drilling tool temperature are precisely detailed and discussed in terms of theoretical analysis and thermal modeling, methods for temperature measuring, the effect of cutting parameters, tool geometries and hole-making methods on temperature and temperature controlling by different cooling methods. In conclusion, several possible future research directions are discussed to offer potential insights for the drilling community and future researchers.

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Section: Tool-work Thermocouplementioning

confidence: 99%

Recent Advances in Drilling Tool Temperature: A State-of-the-Art Review

Zhu

Sun

Guo

et al. 2022

Chin. J. Mech. Eng.

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“…As the robot begins to work, the motor drives the drilling rod sleeve to rotate, which forces the drilling rod to feed and rotate along the sleeve simultaneously because of the combined actions of the rebar and slot; therefore, the drilling rod creates a hole in the coal wall under the effect of the internal thread of the guiding mechanism (Okada et al , 2014).…”

Section: Conceptual Robot Structurementioning

confidence: 99%

A conceptual scale model of mobile drilling robot

Zhao

Zhu

et al. 2019

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Purpose This paper aims to propose a conceptual scale model of mobile drilling robot according to the actual drilling rig and working conditions to improve the safety and automation of drilling in tunnel construction and coal mining applications. Design/methodology/approach A couple of pinion and rack serves as the support mechanism driven by a motor with low rotation speed at high power, and these components are assembled in the center of the robot to tightly fasten the whole body together. The drilling rod and the sleeve are connected through a hole with screw thread so that the rod feeds and rotates simultaneously along with the sleeve. The robot model is automatically controlled by a single-chip microcomputer, and the anti-disturbance circuit is designed as well. A five-step rule obstacle avoidance method is proposed to ensure safe and reliable movement. Findings The results of simulation experiments on drilling operation do indicate that the mechanism and control method are feasible and effective. Research limitations/implications The robot is nearly complete but indeed remains only an experimental machine. Originality/value The design of the mechanism structure for the conceptual robot is novelty. The method of five-step rule obstacle avoidance can improve reliability of obstacle avoidance according to the experimental results, which can meet the requirements of complex working conditions underground coal mine.

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“…At higher feed, a large lump of material has to be sheared off from cutting zone by the cutting edge. It causes an increase in the energy transfer from drill point geometry to the work piece material being sheared [26]. An increase in the energy transfer from drill point geometry causes an increase in the thrust force and torque values.…”

Section: Effect Of Process Parameters On Specific Cutting Pressure (Scp)mentioning

confidence: 99%

Effect of modified drill point geometry on drilling quality characteristics of metal matrix composite (MMCs)

Singh

2016

J Mech Sci Technol

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The abrasive reinforcement present in 'Metal matrix composites' (MMCs) is responsible for numerous machining challenges for the research fraternity. The increase in tool wear, burr formation, surface roughness, and increase in cutting forces are few of such machining challenges during the drilling of MMCs. The present research investigation explores the effect of change in drill point geometry on the drilling Quality characteristics (QCs) of the drilled hole wall. The drilling QCs under investigation are, Specific cutting pressure (SCP) and Surface roughness (SR) of the drilled hole wall. The levels of the input process parameters for optimum values of the output responses were established by Taguchi's methodology. SEM images and contour plots of drilled hole wall have been used to qualitatively explain the drilling behavior of MMCs. The chip formation mechanism observed during drilling establishes the cutting behavior of the different cutting edges of the modified drill point geometry. It has been observed that the single conical chips were produced by primary cutting edge and single ring type chips were produced by secondary cutting edge. The step diameter is the main factor which influences the SCP followed by the feed and point angle. The surface roughness of the drilled hole wall has been governed by the cutting speed, feed and step diameter. Burnishing and honing effect were observed on the drilled hole wall surface because of entrapped free SiC particles using SEM.

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Cutting characteristics of twist drill having cutting edges for drilling and reaming

Cited by 15 publications

References 15 publications

Recent Advances in Drilling Tool Temperature: A State-of-the-Art Review

Recent Advances in Drilling Tool Temperature: A State-of-the-Art Review

A conceptual scale model of mobile drilling robot

Effect of modified drill point geometry on drilling quality characteristics of metal matrix composite (MMCs)

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