Automated feed rate optimization with consideration of angular velocity according to workpiece shape

Vavruska, Petr; Pesice, Matej; Zeman, Pavel; Kozlok, Tomáš

doi:10.1016/j.rineng.2022.100762

Cited by 6 publications

(1 citation statement)

References 29 publications

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“…Erkorkmaz, Rattunde and Yang presented the feed rate scheduling strategy considering the feed drive system and process mechanics (Rattunde et al, 2021;Yang, Aslan, and Altintas, 2018;Erkorkmaz et al, 2013). Vavruska considered the actual curvature of the toolpath for automatically optimizing the feed rate (Vavruska et al, 2022). However, the Acc/Dec control process algorithm has not been clearly studied (Tang et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Prediction of Actual Toolpath and Enhancement of the Toolpath Accuracy Based on Identification of Feedrate Change Characteristics of Machine Tool

Dat,

Phuc

2024

IJTech

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Recently, the toolpath generation for high-speed machining of curved surfaces has become a non-trivial task. The approximated linear segments (G01-based) are widely used in commercial computer-aided manufacturing (CAM) systems. Due to the machine tool's acceleration/deceleration (Acc/Dec) control characteristics, there is a difference between the actual feed rate, the toolpath, and the commanded values when machining with CNC machine tools. This leads to the toolpath trajectory error. In addition, the cutting force applied to the cutting tool causes tool deflection. These factors cause errors between the designed and machined surfaces. In order to, therefore, predict the machined surface shape of a workpiece, it is necessary to predict the actual toolpath trajectory. The main objective of this study is to predict the actual toolpath trajectory by modeling the speed change. Furthermore, several toolpath generation methods in the postprocessing level are proposed to reduce the error between the actual toolpath and the commanded toolpath. The effectiveness and reliability of the methods are verified by experimental results.

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Section: Introductionmentioning

confidence: 99%

Prediction of Actual Toolpath and Enhancement of the Toolpath Accuracy Based on Identification of Feedrate Change Characteristics of Machine Tool

Dat,

Phuc

2024

IJTech

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Effective feed rate control to maintain constant feed per tooth along toolpaths for milling complex–shaped parts

Vavruska,

Bartos,

Pesice

2023

Int J Adv Manuf Technol

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Statistical approach to determine cutting conditions and cutting geometry for edge trimming of G/PA12 plates

Mašek,

Kovalcik,

Zeman

2024

Preprint

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The G/PA12 composite used in this study is made of glass-woven reinforcement and semi-crystalline engineering thermoplastic. This type of composite has potential applications, for example, in the automotive industry. The relatively low glass transition temperature and low stiffness of the matrix compared to the high abrasiveness of glass fibres make this type of composite difficult to machine. The workpieces from this type of composite are produced in a near-net-shape, but the free edges of the workpiece must be trimmed in order to achieve the required accuracy and quality of the product. This study recommends cutting conditions and cutting geometry based on statistical evaluation of force, quality and temperature measurements. The double-helix cutter significantly improved the machined surface quality compared to the standard PCD cutter. The PCD cutter was used in this study to identify key control factors for cutting conditions. By selecting the optimal helix inclination and angle, surface quality improved by up to 80%, with only a 12% increase in temperature. Increasing the feed per tooth also contributes to improving surface quality. In addition to improving quality, increasing the feed per tooth significantly affected the cutting forces. A cutting force model was developed specifically for machining this type of composite. The model's accuracy was enhanced by incorporating the effects of face angle and helix. The temperature measurement method during milling was designed to monitor critical temperature limits, such as the glass transition and melting points. An infrared camera was selected and the emissivity of G/PA12 was determined experimentally. The measurements showed that, while the glass transition temperature was exceeded in all cases, the melting temperature remained at least 47°C below the critical limit, even in the worst-case scenario.

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Automated feed rate optimization with consideration of angular velocity according to workpiece shape

Cited by 6 publications

References 29 publications

Prediction of Actual Toolpath and Enhancement of the Toolpath Accuracy Based on Identification of Feedrate Change Characteristics of Machine Tool

Prediction of Actual Toolpath and Enhancement of the Toolpath Accuracy Based on Identification of Feedrate Change Characteristics of Machine Tool

Effective feed rate control to maintain constant feed per tooth along toolpaths for milling complex–shaped parts

Statistical approach to determine cutting conditions and cutting geometry for edge trimming of G/PA12 plates

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