Glass precision micro-cutting using spark assisted chemical engraving

IF 3.9 Q2 ENGINEERING, INDUSTRIAL Advances in Industrial and Manufacturing Engineering Pub Date : 2021-11-01 DOI:10.1016/j.aime.2021.100056
Lucas Abia Hof , Rolf Wuthrich
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引用次数: 3

Abstract

Manufacturing industry faces new challenges with the emergence of the need for the production of small batches of personalized parts. Such production methods demand for a capability to integrate multiple machining operations in one manufacturing process to reduce setup and calibration time and tooling costs. This requirement is especially challenging for difficult-to-machine materials such as glass, since there exist only a limited number of glass machining technologies and further these technologies often require specialized tooling. Glass cutting is among the crucial machining operations, which is frequently required for glass products.

The presented study discusses free-form micro-cutting by Spark Assisted Chemical Engraving (SACE), determining cut parameters, in terms of tool feed-rate F and depth-of-cut p in function of machining voltage. A simple model is discussed allowing to predict the maximal product Fp which can be used to cut glass by SACE. The presented data and model allow to reduce the time-consuming trial and error process in determining appropriate cutting parameters. An interesting finding is that lowest cutting times can be achieved with tools of 100-μm diameter. Cut surface roughness of initial cuts can be reduced by deploying subsequently incremental finishing (polishing) passes performed at lower machining voltage, lower tool feed rates and higher angular tool rotation. It is demonstrated that very smooth cut surfaces (Rz ~ 1 μm) can be achieved.

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玻璃精密微切割使用火花辅助化学雕刻
随着小批量个性化零件生产需求的出现,制造业面临着新的挑战。这种生产方法需要在一个制造过程中集成多个加工操作的能力,以减少设置和校准时间以及工具成本。这一要求对于玻璃等难以加工的材料尤其具有挑战性,因为只有有限数量的玻璃加工技术,而且这些技术通常需要专门的工具。玻璃切割是玻璃制品经常需要的关键加工工序之一。本研究讨论了火花辅助化学雕刻(SACE)的自由形状微切削,确定了刀具进给速度F和切削深度p随加工电压的函数关系。讨论了一个简单的模型,可以预测最大积F·p,可用于SACE切割玻璃。所提供的数据和模型可以减少在确定适当的切削参数时耗时的试验和错误过程。一个有趣的发现是,使用直径为100 μm的刀具可以实现最低的切削时间。通过在较低的加工电压、较低的刀具进给速率和较高的刀具角度旋转下进行后续的精加工(抛光)工序,可以降低初始切削的切削表面粗糙度。结果表明,该方法可以获得非常光滑的切削表面(Rz ~ 1 μm)。
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来源期刊
Advances in Industrial and Manufacturing Engineering
Advances in Industrial and Manufacturing Engineering Engineering-Engineering (miscellaneous)
CiteScore
6.60
自引率
0.00%
发文量
31
审稿时长
18 days
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