Measurement and Analysis of Mass Flow and Feed Speed Impact on Technological Head Vibrations during Cutting Abrasion Resistant Steels with Abrasive Water Jet Technology

Salokyová, Štefánia

doi:10.4028/www.scientific.net/kem.669.243

Cited by 11 publications

(8 citation statements)

References 6 publications

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“…Some attempts to detect the machining quality through the acoustic emissions were published for milling process [45] or cutting [46]. The acquisition of cutting head vibrations is another technique applied for the AWJ machining monitoring [47][48][49]. Nevertheless, the results seem to be questionable, because many phenomena and factors are influencing the final detected acoustic and vibration signals.…”

Section: Introductionmentioning

confidence: 99%

Abrasive Waterjet (AWJ) Forces—Potential Indicators of Machining Quality

et al. 2021

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The necessity of monitoring the abrasive waterjet (AWJ) processes increases with the spreading of this tool into the machining processes. The forces produced on the workpiece during the abrasive waterjet machining can yield some valuable information. Therefore, a special waterjet-force measuring device designed and produced in the past has been used for the presented research. It was tested during the AWJ cutting processes, because they are the most common and the best described up-to-date AWJ applications. Deep studies of both the cutting process and the respective force signals led to the decision that the most appropriate indication factor is the tangential-to-normal force ratio (TNR). Three theorems concerning the TNR were formulated and investigated. The first theorem states that the TNR strongly depends on the actual-to-limit traverse speed ratio. The second theorem claims that the TNR relates to the cutting-to-deformation wear ratio inside the kerf. The third theorem states that the TNR value changes when the cutting head and the respective jet axis are tilted so that a part of the jet velocity vector projects into the traverse speed direction. It is assumed that the cutting-to-deformation wear ratio increases in a certain range of tilting angles of the cutting head. This theorem is supported by measured data and can be utilized in practice for the development of a new method for the monitoring of the abrasive waterjet cutting operations. Comparing the tilted and the non-tilted jet, we detected the increase of the TNR average value from 1.28 ± 0.16 (determined for the declination angle 20° and the respective tilting angle 10°) up to 2.02 ± 0.25 (for the declination angle 30° and the respective tilting angle of 15°). This finding supports the previously predicted and published assumptions that the tilting of the cutting head enables an increase of the cutting wear mode inside the forming kerf, making the process more efficient.

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Section: Introductionmentioning

confidence: 99%

Abrasive Waterjet (AWJ) Forces—Potential Indicators of Machining Quality

et al. 2021

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“…Measurements and calculations show very good correlation of data from both the procedures. However, the magnitude of both the trailback and the taper depends also on the abrasive mixing process and abrasive quality [31,32]. Some of those studies were already presented in [33,34].…”

Section: Discussionmentioning

confidence: 99%

Shape distortion reduction method for abrasive water jet (AWJ) cutting

Hlaváč

Hlaváčová

Arleo

et al. 2018

Precision Engineering

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“…The investigation of the acoustic emissions [ 10 , 11 ] is one of such unconventional methods used for AWJ measuring. Several attempts aimed at determining the quality of the machining process through the measurement of the cutting head vibrations were presented few years ago [ 12 , 13 , 14 ]. Vibrations of the machined material are often studied to find some new method applicable for AWJ process monitoring [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Abrasive Waterjet (AWJ) Forces—Indicator of Cutting System Malfunction

et al. 2021

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Measurements enabling the online monitoring of the abrasive waterjet (AWJ) cutting process are still under development. This paper presents an experimental method which can be applicable for the evaluation of the AWJ cutting quality through the measurement of forces during the cutting process. The force measuring device developed and patented by our team has been used for measurement on several metal materials. The results show the dependence of the cutting to deformation force ratio on the relative traverse speed. Thus, the force data may help with a better understanding the interaction between the abrasive jet and the material, simultaneously impacting the improvement of both the theoretical and empirical models. The advanced models could substantially improve the selection of suitable parameters for AWJ cutting, milling or turning with the desired quality of product at the end of the process. Nevertheless, it is also presented that force measurements may detect some undesired effects, e.g., not fully penetrated material and/or some product distortions. In the case of a proper designing of the measuring device, the force measurement can be applied in the online monitoring of the cutting process and its continuous control.

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Measurement and Analysis of Mass Flow and Feed Speed Impact on Technological Head Vibrations during Cutting Abrasion Resistant Steels with Abrasive Water Jet Technology

Cited by 11 publications

References 6 publications

Abrasive Waterjet (AWJ) Forces—Potential Indicators of Machining Quality

Abrasive Waterjet (AWJ) Forces—Potential Indicators of Machining Quality

Shape distortion reduction method for abrasive water jet (AWJ) cutting

Abrasive Waterjet (AWJ) Forces—Indicator of Cutting System Malfunction

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