Small Grant for Exploratory Research: Chip-Breaking in Turning

本研究的目标是建立一个详细的、定量的、实验验证的模型，用于使用高压、两相冷却剂的切屑破碎过程。切屑控制系统将这种高压两相切削液注入切屑形成区。流体流将成形切屑破碎成短段。虽然这个过程在实践中相对简单，但其细节尚不清楚。该研究旨在通过假设一个适当的模型来发展对这种新的芯片控制方案的基本理解。该分析模型将断屑过程与加工和切屑控制系统条件联系起来。这项研究的最终结果将是一个实验验证的模型，该模型可用于预测给定工作材料特性，切削条件，冷却剂和冷却剂流动特性的破碎切屑长度。此外，实验工作将包括测量加工表面光洁度和切削刀具磨损。这些结果本身将是有用的，并且还将表明芯片控制系统对芯片形成过程的影响程度。

The goal of this research is to develop a detailed, quantitative, experimentally verified model of the chip breaking process using high pressure, two-phase coolant. The chip control system injects this high pressure, two-phase stream of cutting fluid into the chip formation zone. The fluid stream breaks the forming chip into short segments. While this process is relatively simple in practice, the details of it are not known. The research is aimed at developing a fundamental understanding of this new chip control scheme by postulating an appropriate model. The analytical model will relate the chip breaking process to machining and chip control system conditions. The end result of this research will be an experimentally verified model which can be used to predict broken chip length given work material properties, cutting conditions, and coolant and coolant flow characteristics. Further, the experimental work will include measurements of machined surface finish and cutting tool wear. These results will be useful in themselves and will also indicate the extent of the effects of the chip control system on the chip formation process.