Effects and Mechanism of Micro-Drilling Parameters on the Drilling Force and Hole Morphology of Sapindus mukorossi Seeds

Zhao, Suxiao; Bai, Xiaopeng; Xu, Daochun; Wan, Cao

doi:10.3390/f14061162

Cited by 3 publications

(1 citation statement)

References 32 publications

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“…Excessive forces can cause tool wear, and heat generation, and ultimately result in drill bit failure. Therefore, it is essential to investigate and understand the forces involved in the micro-drilling of nickel-based superalloys to optimize the machining parameters and avoid potential issues [4].…”

Section: Introductionmentioning

confidence: 99%

Assessing the torque and thrust forces in micro-drilling of thermal barrier coated nickel superalloys

Patil,

Kamble

2023

Eng. Res. Express

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Nickel superalloys are crucial materials for aerospace applications, offering exceptional performance at high temperatures. Key components in aircraft engines, such as turbine blades, guiding vanes, afterburners, and casings, require the intricate process of micro-drilling to enable effusion cooling. However, when dealing with nickel-based superalloys, tool breakage during micro-drilling is a substantial drawback. This study investigates the cutting forces acting at the tool-workpiece interface during the micro-drilling of thermal barrier-coated Nimonic 90. The micro-drilling was conducted under three lubrication conditions: dry, flood, and 0.5% Graphene-based NMQL, utilizing a 700 μm diameter TiAlN-coated tungsten carbide drill. Experiments were performed at spindle speeds of 1000, 2000, and 3000 rpm, with a constant feed rate of 3 μm/rev. Results revealed that under dry conditions, the micro-drill failed after drilling just 16, 18, and 15 holes at spindle speeds of 1000, 2000, and 3000 rpm, respectively. In contrast, no failures occurred under flood and 0.5% Graphene-based NMQL lubrication conditions, likely due to improved heat dissipation, resulting in reduced thrust forces and torque acting on the micro-drill. Thrust force and torque values were measured using a Kistler 3-component mini dynamometer, with maximum values of 26 N and 0.31 N-m at 1000 rpm under dry lubrication conditions. These values decreased to 24 N and 0.25 N-m and 22 N and 0.19 N-m at spindle speeds of 2000 and 3000 rpm, respectively. NMQL lubrication conditions consistently exhibited lower thrust force and torque values compared to dry and flood conditions, with the lowest recorded values (12.5 N and 0.06 N-m) at 3000 rpm in the NMQL lubrication condition. The NMQL condition facilitated for efficient and better drilling operation due to the rolling effect produced by the graphene nanoparticles.

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Section: Introductionmentioning

confidence: 99%

Assessing the torque and thrust forces in micro-drilling of thermal barrier coated nickel superalloys

Patil,

Kamble

2023

Eng. Res. Express

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Measuring and modeling the tool path of the small-sized drill bit in wood-based materials

Król,

Koczan

2023

Wood Material Science & Engineering

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Assessment of the Effectiveness of Thermographic and Computer Vision Techniques in Analyzing Thermal Phenomena during Drilling: Wood-Based Materials Perspective

Król,

Podziewski,

Ajdinaj

2023

Annals of WULS - SGGW. Forestry and Wood Technology

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A new direction related to research in the wood industry may be thermal imaging together with computer vision techniques. In this work, an attempt was made to use these to record temperature phenomena during drilling in woodbased materials, using MDF as an example. For this purpose, a CNC station was created with a built-in high-resolution thermal imaging camera (260x200 px). Two drill bits were examined – sharp and dull. The temperatures generated by them during drilling were compared. It was shown that the phenomena which can be recorded during the drilling process can be associated with changes in the tool geometry, and therefore can be used for research related to heat during drilling. The presented results open many new and interesting directions in research in wood-based materials technology.

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Effects and Mechanism of Micro-Drilling Parameters on the Drilling Force and Hole Morphology of Sapindus mukorossi Seeds

Cited by 3 publications

References 32 publications

Assessing the torque and thrust forces in micro-drilling of thermal barrier coated nickel superalloys

Assessing the torque and thrust forces in micro-drilling of thermal barrier coated nickel superalloys

Measuring and modeling the tool path of the small-sized drill bit in wood-based materials

Assessment of the Effectiveness of Thermographic and Computer Vision Techniques in Analyzing Thermal Phenomena during Drilling: Wood-Based Materials Perspective

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