Performance enhancement of rotary tool near-dry EDM process through tool modification

Autor: Akshay Dvivedi, Pradeep Kumar, Ramver Singh, Vineet Kumar Yadav
Rok vydání: 2021
Předmět:
Zdroj: Journal of the Brazilian Society of Mechanical Sciences and Engineering. 43
ISSN: 1806-3691
1678-5878
DOI: 10.1007/s40430-021-02806-y
Popis: The performance enhancement of the rotary tool near-dry electrical discharge machining (RT-ND-EDM) process by modifying the tool electrode geometry was explored in the present work. The experiments were performed using the tubular tool, slotted tools, and helical tools. The number of slots in slotted tool electrodes and the number of starts in the helical tool electrodes were selected based on the experimental results. Also, the performance of the selected tool electrodes was compared with that of the basic tubular tool electrode. The effects of input parameters (tool rotation speed, current, pulse on time, gas pressure, and the LFR) on the performance of the RT-ND-EDM process are assessed for selected tool electrodes. This research established the efficacy of introducing slotted and helical features into rotating cylindrical tools to enhance the performance of the RT-ND-EDM process. The flushing of the inter-electrode gap is of decisive importance with respect to material removal rate, geometric accuracy, and surface quality of work material during the RT-ND-EDM process. The results revealed that a double-start helical-shaped tool electrode resulted in better process performance among all the selected shape electrodes.
Databáze: OpenAIRE
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