Analysis of Cutting Behavior during Tapping and Measurement of Tool Edge Temperature Measured by a Two-Color Pyrometer

Tanaka, Ryutaro; Yamazaki, Shuhei; Hosokawa, Akira; Furumoto, Tatsuaki; Ueda, Takashi; Okada, Masato

doi:10.1299/jamdsm.7.115

Cited by 13 publications

(13 citation statements)

References 8 publications

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“…The measured temperature was nearly the maximum temperature in the target area (8) . This pyrometer has been used for measuring the tool edge temperature during turning (8) , milling (10) (11) , driven rotary cutting (12) and tapping (13) .…”

Section: Methodsmentioning

confidence: 99%

Wear Characteristics of Ceramic Tools When Turning BN Free-Machining Steel

Tanaka

Hosokawa

Furumoto

et al. 2013

JAMDSM

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This study examined the wear characteristics of ceramic tools when turning BN free-machining steel based on AISI 1045. An experiment was conducted to investigate why the alumina TiC-based ceramic tool showed remarkably better cutting performance than a pure alumina ceramic tool. The tool flank temperature, cutting force, and element distribution on the wear part were investigated. The cutting force and tool flank temperature of the BN free-machining steel were lower than those of standard steel, and the alumina TiC-based ceramic tool allowed for a lower cutting force and tool flank temperature than the pure alumina ceramic tool. After cutting of the BN free-machining steel, on the rake face, a deposited layer containing Al and N was detected, and the amount of the deposited layer on the alumina TiC-based ceramic tool was more than that on the pure alumina ceramic tool. Therefore, using an alumina TiC-based ceramic tool suppresses the tool flank temperature and makes it easier for a protective nitride layer to stick on the wear part; as a result, it has a clearly superior tool wear resistance than an alumina ceramic tool.

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Section: Methodsmentioning

confidence: 99%

Wear Characteristics of Ceramic Tools When Turning BN Free-Machining Steel

Tanaka

Hosokawa

Furumoto

et al. 2013

JAMDSM

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“…The measured temperature was nearly the maximum temperature in the target area (Mahfuds et al, 2002). This pyrometer can be used to measure the tool edge temperature during turning (Nishimoto, et al, 2012;Hosokawa, et al, 2012), milling (Ueda, et al, 2001), drilling, and tapping (Tanaka, et al, 2013). Müller, B. and Renz, U.…”

Section: Output Characteristics Of Two-color Pyrometermentioning

confidence: 99%

Influence of cutting fluid on tool edge temperature in end milling titanium alloy

Tanaka

Hosokawa

Furumoto

et al. 2015

JAMDSM

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IntroductionTitanium alloys are characterized by low weight, high strength, and high corrosion resistance. This makes them particularly suitable for applications in the field of aviation. At the same time, recently, carbon fiber reinforced plastic (CFRP) composites have been applied to not only the structural components but also the engine parts of aircraft in order to improve fuel efficiency. As such, CFRPs, too, are being used increasingly in aircraft structures. Compared to CFRPs, though, titanium alloys feature a similar coefficient of thermal expansion, lesser galvanic corrosion, better weight characteristics, and higher strength; this explains their increasing demand.Titanium alloys are difficult to cut materials (Ezugwu and Wang, 1997, Lopez et al., 2000 and therefore the high efficiency machining is strongly required. The removable rate per unit time is an important index for evaluating the machining efficiency. Rough cutting requires high efficiency; therefore, a helical cutter with indexable inserts is typically used for this purpose. The machining efficiency of this process is improved by setting the largest possible value of the radial and the axial depth of cut. However, the sharpness of an indexable insert typically compares unfavorably with that of a solid end mill. The larger the radial depth cut, the longer is the time required for one cut; furthermore, the cutting temperature and tool wear may increase. Therefore, the cutting conditions must be set carefully in consideration of the tool life and even the cutting temperature.Separately, many experimental techniques have been developed for measuring the cutting temperature in milling. AbstractThis study investigates the influence of cutting fluid on the cutting temperature in end milling of a titanium alloy. As the cutting temperature, the tool edge temperature was measured using a two-color pyrometer with an optical fiber. A helical cutter with an indexable insert of 50-mm diameter was used. The cutting speed was set at 100 m/min. The feed rate was set at 0.1 mm/tooth. The radial and the axial depth of cut were set at 12 and 5 mm, respectively. Under this cutting condition, a method for measuring the transitional tool edge temperature in one cut was established. One cut took ~15.22 ms under this cutting condition. In the case of up cut, the temperature under dry conditions increased rapidly at the start of cutting and then converged. The temperature under wet conditions increased slowly until 7 ms and then converged. In the case of down cut, the temperature under dry conditions increased rapidly at the start of one cut and then remained almost constant, before increasing slightly at the end of one cut. The temperature under wet condition increased rapidly at the start of one cut and then decreased slowly until the end of one cut. The larger tool edge temperature reduction effect caused by the cutting fluid was obtained near the end of one cut, where the uncut chip thickness was smaller. Due to the small uncut chip thickness, the cutting fluid is...

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“…Biermann and Oezkaya 16 stated that the position of the through hole coolants of the thread taps can be modified to enhance the thread tapping performance 36%. Tanaka et al 17 used the pyrometer method to measure the cutting edge temperature of the thread tap and stated that cutting edge temperature and chip temperature can be distinguished by using the demonstrated method. The effects of the tool coatings on the thread tapping process also have taken the attentions of the researchers.…”

Section: Introductionmentioning

confidence: 99%

Optimization of tool design parameters for thread tapping process of Ti-6Al-4V

Dogrusadik

Aycicek

Kentli

2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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Thread tapping is one of the most important machining processes. Although thread tapping is a usual process and has been used for decades, the process still needs improvement for promising materials such as titanium alloys to increase the performance of the process. Titanium alloys are known as difficult-to-cut materials due to their low heat conductivity and elastic modulus. The aim of the work presented in this paper is to optimize the tapping tool primary design parameters for Ti-6Al-4V. The most influential tool design parameters on the process were selected as the rake angle, helical flute angle, chamfer angle, and tool coating. Optimization of the tool design parameters was made by considering the results of the experimental work. Two levels of each parameter were chosen. Taguchi L8 orthogonal array was used as the design of experiment. Tapping tool temperature and tapping torque were determined as the process outputs. According to the results, the optimized tool design parameters were found as 6° rake angle, 12° helical flute angle, 14° chamfer angle, and TiCN coating.

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Analysis of Cutting Behavior during Tapping and Measurement of Tool Edge Temperature Measured by a Two-Color Pyrometer

Cited by 13 publications

References 8 publications

Wear Characteristics of Ceramic Tools When Turning BN Free-Machining Steel

Wear Characteristics of Ceramic Tools When Turning BN Free-Machining Steel

Influence of cutting fluid on tool edge temperature in end milling titanium alloy

Optimization of tool design parameters for thread tapping process of Ti-6Al-4V

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