Study on High Speed Machining for Super hard alloy by Dry EDM using Machining Center

加工中心干式电火花高速加工超硬合金的研究

• 批准号: 15560108
• 负责人: YOSHIDA Masahiro
• 金额: $ 2.43万
• 依托单位: Tokyo Metropolitan College of Aeronautical Engineering
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560108/
• 关键词: Dry EDM; Machining center; Electrical discharge machining; 3-D Surface machining; Super hard alloy; 5-axis machining; Characteristic of machined surface; Servo-feed machining; インダクタンス; 給電板; 擬似サーボ; 高応答性サーボ機構; 放電加工; 工具電極送り方法; 加工速度; 放電頻度; 放電電

In this research, we investigated the possibility of the Dry EDM(electric discharge machining) using machining centre (MC), and we attempted a super hard alloy machining by the Dry EDM using a die sinking EDM, and the research on three dimension machining (3-D machining) were done. First of all, it describes from the investigation result of the possibility that the Dry EDM is possible to process by using a MC. As a result, it have been obtained the higher machining speed when it processes Z axially and it reaches prescribed depth, the tool electrode is sent to the following processing point at high speed compared with when the tool electrode a little cut depth was put Z axially and the it was sent X axially at high speed. And the processing by the pseudo-servo sending using the Z axis of MC which have a high-speed sending ability and a high acceleration and deceleration ability was tried. In this result, the improvement of the machining speed reached the ceiling though the effect of a pseudo-servo was admitted, because the Z axis movement speed is a limit due to the Z axis have the heavy mass. Therefore, it is necessary to process it by using the working table with a high frequency response.Here, a super heard alloy machining and the 3-D machining by Dry EDM using a traditional EDM are described. As a result, a super heard alloy machining, when the supersonic vibration was added to the tool electrode or the workpiece, the improvement of the machining speed and the tool electrode wear ratio were decreased. Moreover, 3-D machining was excellent the processing in the Dry EDM in the point of the machining speed, the tool electrode wear ratio, and the processing accuracy compared with the traditional EDM processing of the past. And we were tried to a 3-D machining by the Dry EDM using 5-axis machining. In this result, the machining speed's remarkably improving compared with the processing by 3-axis machining.

本研究探讨了利用加工中心进行干式电火花加工的可能性，并尝试了利用电火花加工中心进行超硬合金干式电火花加工，同时对超硬合金的三维加工进行了研究。首先，从研究结果出发，阐述了干式电火花加工可能采用MC加工的可能性。结果表明，当Z轴向加工到规定深度时，与Z轴向加工到一定深度时，X轴向加工到一定深度时相比，刀具电极以较高的加工速度被高速送至下一加工点。并尝试了利用具有高速送料能力和高加减速能力的MC的Z轴进行伪伺服送料的加工。在该结果中，虽然承认伪伺服的效果，但加工速度的提高达到了极限，因为Z轴移动速度由于Z轴具有重质量而受到限制。因此，有必要采用高频响工作台进行加工。本文介绍了一种超硬合金的加工方法，以及利用传统的电火花加工方法进行干式电火花三维加工的方法。结果表明，在超硬合金的加工中，当对工具电极或工件施加超声振动时，加工速度的提高和工具电极的磨损率都降低了。此外，与过去的传统电火花加工相比，在加工速度、工具电极磨损率和加工精度方面，3D加工优于干式电火花加工。并尝试了利用干式电火花五轴加工进行三维加工.在该结果中，与通过3轴加工的加工相比，加工速度显著提高。

项目成果

High Speed 3D Milling by Dry EDM

• DOI: 10.1016/s0007-8506(07)60552-6
• 发表时间: 2003
• 期刊: CIRP Annals
• 作者: Masanori Kunleda;Y. Miyoshi;Tsutomu Takaya;Nobuhiro Nakajima;Zhanbo Yu;Masahiro Yoshida

超硬合金の気中放電加工

硬质合金航空放电加工

• 发表时间: 2004
• 期刊: 機械技術 Vol.52/6/
• 作者: 虞 戦波;高橋 潤;国枝正典
• 通讯作者: 国枝正典

気中放電加工における放電電流波形及び工具電極送り方法が加工特性に及ぼす影響に関する研究

空中放电加工中放电电流波形和工具电极进给方式对加工特性的影响研究

• 发表时间: 2004
• 期刊: 平成15年東京都立航空工業高等専門学校研究紀要 Vol.41
• 作者: 川畑洋平;吉田政弘
• 通讯作者: 吉田政弘

Feasibility of 3-D Surface Machining by Dry EDM

干式 EDM 3D 表面加工的可行性

• 发表时间: 2005
• 期刊: International Journal of Electrical Machining No.10
• 作者: U Zhanbo;Jun TAKAHASHI;Nobuhiro NAKAJIMA;Sadao SANO;Kohsaku KARATO;Masanori KUNIEDA
• 通讯作者: Masanori KUNIEDA

M.Kunieda, et al.: "High Speed 3DMilling by Dry EDM"Annals of the CIRP. Vol.52/1/. 147-150 (2003)

M.Kunieda 等人：“干式 EDM 高速 3DM 铣削”CIRP 年鉴。