Accuracy estimation of drilled holes with small diameter and influence of drill parameter on the machining accuracy when drilling in mild steel sheet

Endo, Hiroki; Murahashi, Toshihiko; Marui, Etsuo

doi:10.1016/j.ijmachtools.2006.02.001

Cited by 23 publications

(8 citation statements)

References 13 publications

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“…The research focused especially on hole surface quality and tool wear. Marui et al [1] stated that with increasing cutting speed, generally better hole surface quality is obtained, but high cutting speeds negatively affect hole cylindricality. Kılıçkap et al [2] ABSTRACT Drilling operations have an important role in manufacturing industries and the application range is about 33% among the machining methods.…”

Section: Literature Reviewmentioning

confidence: 99%

Investigation of the Effect of Drill Bit Feature on Hole Surface Quality and Tool Wear

Kıyak¹

2021

DÜMF Mühendislik Dergisi

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Section: Literature Reviewmentioning

confidence: 99%

Investigation of the Effect of Drill Bit Feature on Hole Surface Quality and Tool Wear

Kıyak¹

2021

DÜMF Mühendislik Dergisi

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“…The literature[16]evaluated the accuracy of punched hole by calculating the difference between the punched hole diameter and die hole diameter. In the literature [17], the outer contour of the hole was rst measured for a small hole with a diameter of about 1 mm using a universal projector. Then the outer contour of the hole was divided into 36 equal parts at 10° intervals, and subsequently the polar coordinate form was established with the center of the contour circle as the coordinate origin.…”

Section: Introductionmentioning

confidence: 99%

Effect factors and evaluation method of part accuracy formed by ultrasonic micro punching with a flexible punch

Liu¹,

Liu²,

Xu³

et al. 2022

Preprint

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In this paper, an automatic and quick evaluating method for micro-hole size and form accuracy with computer-aided technique was proposed. Using this method, the form accuracy of the micro-hole punched by a special ultrasonic microforming method, that is Micro Ultrasonic thin Sheetmetal Forming using molten plastic as ﬂexible punch (short as Micro-USF), was discussed. Using this microforming method, micro-holes with diameters of 500,600 and 700 mm were punched from a thin sheet of purple copper with a thickness of 30 mm. The experimental results showed that the ratios of the maximum size error and the maximum roundness error of the micro-hole to the corresponding punching die diameter were 1.40% and 1.47%, respectively, and the ratios of the maximum size error range and the maximum form error range to the corresponding punching die diameter were 0.70% and 0.72%, respectively, indicating that this Micro-USF method has high accuracy and precision for punching micro-holes. Moreover, it was found that there is no significant direct correlation between micro-holes sample errors and these forming parameters when the forming parameters such as ultrasonic power, ultrasonic time and cylinder pressure were varied, which indicated that the sample errors were random in some extent.

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“…12 But the thermal effects are only a fraction of the various factors influencing the quality of holes, such as cutting parameters (cutting speed, feed rate, depth of cut), material and coating of the tool, tool geometry, tool clamping, type and method of cutting fluid application and drilling strategy (direct or intermittent, through hole or blind). 1,7,13–16…”

Section: Introductionmentioning

confidence: 99%

Effects of the cutting fluid reduction on the dimensional quality of holes

Zeilmann

Vacaro

Bordin

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part B:

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Drilling is one of the machining processes most used by manufacturing companies and is very complex from the perspective of scientific study. The geometry and the surface are generated in a single operation with many influential parameters. Geometric and dimensional control are more critical when the use of cutting fluids is reduced or eliminated because the temperatures in the process can influence the shape and the dimensional accuracy of the holes. However, this influence is not completely understood. With this goal, this article presents a dimensional analysis of holes made with carbide drills in AISI P20 steel under the fluid application of emulsion, minimal quantities of lubricant and dry machining. The dimensional parameters analyzed were the diameter and the circularity of the holes. Special highlight can be given to shape results, which were evaluated at different depths (beginning, middle and end of the hole), and along the evolution of the number of holes. Some differences of the investigated results compared to the literature are due to the formation of adhesion on the wall of the hole, resulting from passage of the edge on this particular severity condition.

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Accuracy estimation of drilled holes with small diameter and influence of drill parameter on the machining accuracy when drilling in mild steel sheet

Cited by 23 publications

References 13 publications

Investigation of the Effect of Drill Bit Feature on Hole Surface Quality and Tool Wear

Investigation of the Effect of Drill Bit Feature on Hole Surface Quality and Tool Wear

Effect factors and evaluation method of part accuracy formed by ultrasonic micro punching with a flexible punch

Effects of the cutting fluid reduction on the dimensional quality of holes

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