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Nanosecond-Fiber Laser Cutting and Finishing Process for Manufacturing Polycrystalline Diamond-Cutting Tool Blanks by Chang, Fuh-Yu (author);Hsu, Chuan-Fu (author);Lu, Wen-Hui (author) is a Engineering article available to read on EtoBox.

What is Nanosecond-Fiber Laser Cutting and Finishing Process for Manufacturing Polycrystalline Diamond-Cutting Tool Blanks about?

This paper presents a nanosecond-fiber-laser-based method for manufacturing polycrystallinediamond (PCD) tool blanks. The effects of variations in the process path and operating parameters on the cut-surface morphology and surface-quality of the processed PCD workpieces have been analyzed. The results obtained in this study reveal the reactive fusion cutting mechanism to yield a processing depth of 155.2 μm at 30-W average laser power, 200-ns pulse width, and 30-kHz pulse frequency. The successful cutting of a 1.2-mm-thick PCD workpiece via implementation of the horizontal-shifting and vertical layer-by-layer processing methods is reported. Compared to the wire-electrical-discharge machining (WEDM), the proposed approach yields superior cut-surface roughness (Ra = 0.378 μm). Moreover, the laser processing was performed on a single-axis curved stage, on which the workpiece placed at an inclination during laser cutting and finishing. Thus, a PCD insert with an orthogonally cut edge, flat and pit-free finishing surface, and excellent tool-surface roughness (Ra = 0.202 μm) was obtained, thereby verifying the feasibility of the proposed approach. Furthermore, it is evident that the nano

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Author

Chang, Fuh-Yu (author);Hsu, Chuan-Fu (author);Lu, Wen-Hui (author)

Publisher

MDPI AG

Published

2021

Language

EN

Field

Engineering (Physical Sciences)