Investigations into solid lubricant filled textured tools on hole geometry and surface integrity during drilling of aluminium alloy

Dheeraj, N.V.; Sanjay, S.; Bhargav, K.; Jagadesh, T.

doi:10.1016/j.matpr.2020.01.163

Cited by 18 publications

(8 citation statements)

References 23 publications

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“…From a review of the literature, it is clear that the research on drilling has so far focused on the influence of basic process parameters (i.e., cutting speed and feed per revolution) on the hole diameter error [7][8][9][10][11][12]. It can be concluded that the higher the rotational speed of the spindle, the greater the diameter error at the entry and exit of the hole.…”

Section: Introductionmentioning

confidence: 99%

“…Sandeep et al [ 20 ] analyzed the effects of the rotational speed of the spindle and cooling conditions on the hole roundness. Dheeraj et al [ 8 ] discussed only the influence of the rotational speed of the spindle on hole cylindricity. Zhang et al [ 21 ] attempted to explain the reasons for a hole straightness error observed in 12 tests, and divided the results of admissible hole straightness error into four groups.…”

Section: Introductionmentioning

confidence: 99%

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Analyzing the Effects of the Kinematic System on the Quality of Holes Drilled in 42CrMo4 + QT Steel

2021

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This article discusses the relationship between the kinematic system used in drilling and the quality of through-holes. The drilling was done on a CTX Alpha 500 universal turning center using a TiAlN-coated 6.0 mm drill bit with internal cooling, mounted in a driven tool holder. The holes were cut in cylindrical 42CrMo4 + QT steel samples measuring 30 mm in diameter and 30 mm in length. Three types of hole-drilling kinematic systems were considered. The first consisted of a fixed workpiece and a tool performing rotary (primary) and linear motions. In the second system, the workpiece rotated (primary motion) while the tool moved linearly. In the third system, the workpiece and the tool rotated in opposite directions; the tool also moved linearly. The analysis was carried out for four output parameters characterizing the hole quality (i.e., cylindricity, straightness, roundness, and diameter errors). The experiment was designed using the Taguchi approach (orthogonal array). ANOVA multi-factor statistical analysis was used to determine the influence of the input parameters (cutting speed, feed per revolution and type of kinematic system) on the geometrical and dimensional errors of the hole. From the analysis, it is evident that the kinematic system had a significant effect on the hole roundness error.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analyzing the Effects of the Kinematic System on the Quality of Holes Drilled in 42CrMo4 + QT Steel

2021

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“…They found that the combined influence of the cutting speed and the feed per revolution on the hole roundness error was approximately 64%. The investigations presented in [ 12 ] concentrated on the effect of the spindle speed on the hole accuracy calculated as a percentage. Singh, Kumar, and Saini [ 2 ] discussed the effects of the spindle speed, feed per revolution, and point angle on the hole diameter error.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Kinematic System on the Geometrical and Dimensional Accuracy of Holes in Drilling

Bronis¹,

Miko²,

Nowakowski³

2021

Materials

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This article attempts to show how the kinematic system affects the geometrical and dimensional accuracy of through-holes in drilling. The hole cutting tests were performed using a universal turning center. The tool was a TiAlN-coated Ø 6 mm drill bit, while the workpiece was a C45 steel cylinder with a diameter of 30 mm and a length of 30 mm. Three kinematic systems were studied. The first consisted of a fixed workpiece and a rotating and linearly moving tool. In the second, the workpiece rotated, while the tool moved linearly. The third system comprised a rotating workpiece and a rotating and linearly moving tool, but they rotated in opposite directions. The geometrical and dimensional accuracy of the hole was assessed by analyzing the cylindricity, straightness, roundness, and diameter errors. The experiment was designed using the Taguchi orthogonal array method to determine the significance of the effects of the input parameters (cutting speed, feed per revolution, and type of kinematic system) on the accuracy errors. A multifactorial statistical analysis (ANOVA) was employed for this purpose. The study revealed that all the input parameters considered had a substantial influence on the hole quality in drilling.

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“…At the high speed and with large feed rate in the cutting process, large friction between the tool-chip could occurs, which may increase the wear of the tool. Micro-textured tools can improve the tool's performance and reduce the frictional contact state between the workpieces and tools, thereby reducing the cutting force, the cutting temperature and the tool wear, which are of great signi cance for improving tool life and the quality of the machined surface [8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

Study on cutting performance of SiCp/Al composite using textured tool

Wang

Popov

et al. 2021

Preprint

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In the micro cutting process of SiCp/Al composites, the tool wear is serious due to the existence of reinforcement phase in the material, which greatly affects the machined surface integrity. In order to reduce the friction and adhesion at the tool-chip interface, fabricating micro texture on the tool surface could be a feasible solution. This work focuses on the study of the cutting performance of the textured cutting tools through micro cutting of SiCp/Al composites. The experiments were carried out using NTK-KM1CCGW060202H uncoated cemented carbide tools with micro-hole textures developed by pulsed fiber laser. The results indicate that the micro-textured tools can reduce the wear, sticking and the contact length between the tool-chip. Also, the surface quality can be improved. It is observed from the chip’s surface that the micro-textured tool can produce secondary cutting when machining SiCp/Al composite materials, the smaller the texture spacing, the more obvious the secondary cutting phenomenon. Furthermore, the cutting forces can be reduced using the micro-textured tool in most cases. However, when the texture spacing is too small the cutting force does not decrease. Finally, the surface roughness and surface residual stress of the machined workpiece are investigated. Textured tools have better results.

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Investigations into solid lubricant filled textured tools on hole geometry and surface integrity during drilling of aluminium alloy

Cited by 18 publications

References 23 publications

Analyzing the Effects of the Kinematic System on the Quality of Holes Drilled in 42CrMo4 + QT Steel

Analyzing the Effects of the Kinematic System on the Quality of Holes Drilled in 42CrMo4 + QT Steel

Influence of the Kinematic System on the Geometrical and Dimensional Accuracy of Holes in Drilling

Study on cutting performance of SiCp/Al composite using textured tool

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