Surface finishing of electrically conductive diamond tool by electrochemical machining

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560140
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Production engineering/Processing studies
• Research Institution: Toyama Prefectural University
• Principal Investigator: IWAI Manabu 富山県立大学, 工学部, 准教授 (30363873)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 電解加工 / ダイヤモンド工具 / 導電性ダイヤモンド / CVDダイヤモンド膜 / PCD / 表面粗さ

Outline of Final Research Achievements

This study deals with a new surface finishing method of electrically conductive diamond materials. This method has two advantageous features of the electrolytic machining in addition to the general view that a better surface roughness could be obtained. One of those features is that no higher heat is generated at the machining point. This can eliminate a risk of the film delamination in the case where a workpiece is the CVD diamond coated tool. The other is that a wider machining gap is available between an electrode and a workpiece. This was thought to allow the electrolytic machining to be applied to a tool with a complex shape such as a drill and an endmill. From the results of electrolytic machining for the electrically conductive diamond materials, it was found that the surface of the electrically conductive diamond could be smoothened enough by electrolytic machining though relatively long period of time was required.

Free Research Field

工学