Precision and surface integrity of threads obtained by form tapping

Fromentin, Guillaume; Poulachon, Gérard; Moisan, A.; Julien, Benoı̂t; Giessler, J.

doi:10.1016/s0007-8506(07)60159-0

Cited by 61 publications

(26 citation statements)

References 3 publications

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“…In addition of the absence of chip, using form tapping offers several benefits: an increased reliability, an increased tool life and finally better geometrical and mechanical characteristics of threads [7]. That's why this process acquires greater importance for several mechanical industries such as the automotive sector.…”

Section: (Figure 1 Micrographs Of Cut and Formed Thread)mentioning

confidence: 99%

Tribological aspect of lubrication in form tapping of high‐strength steel

Bierla

Fromentin

Martin

et al. 2008

Lubrication Science

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Abstract:This study aims at analyzing the tribochemical mechanisms of lubrication during the process of form tapping and consequently optimizing the formulation of the lubricant. In order to correlate the tribochemical reactions with the performance of a lubricant, we measure the alteration of tapping torque according to ASTM D5619 standard.The objective of the study also relates to the identification of the additives and the association of their properties to the performance of lubrication. The goal is to characterize the nature of the tribofilm created at the bottom of the threads which is the zone the most severely affected by the working tool. X-ray Photoelectron Spectroscopy (XPS) is used to characterize the surface of formed threads.This study demonstrates a link between the sulphur reactions on the metallic surface and the friction reducing performance of lubricant during form tapping.

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Section: (Figure 1 Micrographs Of Cut and Formed Thread)mentioning

confidence: 99%

Tribological aspect of lubrication in form tapping of high‐strength steel

Bierla

Fromentin

Martin

et al. 2008

Lubrication Science

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“…Breakage of a thread-cutting tool can impact significantly the productivity of the process [Veldhuis et al, 2007]. When compared to form tapping [Fromentin et al, 2005] or cut tapping , a broken tool in thread milling is easier to evacuate without damaging the workpiece, so it is a good alternative for high cost parts. While tapping requires a given tool for producing an specific thread dimension, thread milling can produce threads in bigger diameters and special threads.…”

Section: Introductionmentioning

confidence: 99%

Analytical and experimental investigations on thread milling forces in titanium alloy

Araujo

Fromentin

Poulachon

2013

International Journal of Machine Tools and Manufacture

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. AbstractThis study deals with thread milling process that it is considered a complex machining technique due to its elaborated tool geometry and its tridimensional tool trajectory. It is needed advanced research on the threading process which has not been much studied. Previous studies focused on geometrical modeling or mechanistic modeling of the thread milling process. There is a need of a better understanding of parameter effects to accomplish a model that tends to be more realistic and includes local parameters. This investigation does the analysis of thread milling parameters: thread geometry, cutting conditions and tool angles, which can be applied to the tool optimization. The cutting forces and torque were measured and representative values of its variation were calculated and analyzed as response of the experiments. A geometrical analysis and an analysis of variance were employed for determining the influence of the factors and based on the results, it is proposed a physical understanding of the process.

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“…Due to these distinctive principle and characteristic of internal thread forming, extrusion tapping of internal thread has caused wide research and extensive use in many industry, especially in the automotive industry [1,5,6,7]. However, extrusion tapping of internal thread also has its defects, fabricate hard, cost high, and this process is not suitable for the materials of brittle and high hardness, inclined and thin wall threaded hole [8].…”

Section: Introductionmentioning

confidence: 99%

Finite element modeling and simulation for vibration-assisted extrusion tapping of internal thread

Li¹,

Zhao²

2012

AIP Conference Proceedings

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This paper firstly introduces the principle and characteristic of traditional extrusion tapping of internal thread, elaborates the material flow law during tapping process. Then puts forward a novel process of vibration-assisted extrusion tapping of internal thread, explains the effect mechanism of vibration during extrusion tapping of internal thread. Finally, the simplified finite element model of extrusion tapping are built, and the simulation of thread forming process of traditional extrusion tapping of internal thread are conducted, furthermore, the characteristic and influencing law of different vibration parameters(include vibration frequency, amplitude and direction) of vibration-assisted extrusion tapping of internal thread are studied, and some practical results are obtained. The simulation results show that applying vibration to extrusion tapping of internal thread can reduce tapping torque and improve thread forming quality, the reasonable selection of vibration parameters are very crucial to this novel process.

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Precision and surface integrity of threads obtained by form tapping

Cited by 61 publications

References 3 publications

Tribological aspect of lubrication in form tapping of high‐strength steel

Tribological aspect of lubrication in form tapping of high‐strength steel

Analytical and experimental investigations on thread milling forces in titanium alloy

Finite element modeling and simulation for vibration-assisted extrusion tapping of internal thread

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