ACTIVE CONTROL OF OD-BLADE BY DYNAMIC PRESSURE OF GRINDING FLUID

通过磨削液动压主动控制外径刀片

• 批准号: 12650106
• 负责人: MIZUNO Masahiro
• 金额: $ 2.18万
• 依托单位: IWATE UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650106/
• 关键词: OD BLADE; ELECTROFORMED DIAMOND BLADE; DEFLECTION OF BLADE; BLADE GUIDE; EDDY CURRENT DISPLACEMENT SENSOR; PIEZOCERAMIC STACK; たわみ計測

In the slicing processing with outer diameter blade, the blade deflection caused while processing has a large effect on the cutting accuracy. The blade deflection is caused by various factors such as an asymmetric wear of blade, imbalance of grinding performance of blade side faces and so on. It is difficult to exclude those factors completely. Therefore, the method of actively controlling the blade deflection with a blade guide was examined in this research. The slot of the blade guide was made by the blade itself which is used for slicing. At first, the effect of the fixed blade guide on the cutting accuracy was examined. In the experiment, the blade guide made of ceramics was set to the electroformed diamond blade of all blade type of 0.1mm in thickness, and AlTiC of 2mm in thickness was cut. As a result of it, it was clarified that the blade deflection can be suppressed with the blade guide. It is thought that the effect is brought by the dynamic pressure of grindig fluid caused in the wedge gaps between the blade sides and the guide faces.Next, the above-mentioned experiment was modeled and the effect of the blade guide on the cutting accuracy was exmained theoretically. As a result of it, it was shown that the cutting deviation from the correct cutting path is suppressed to about 2/3 by using the blade guide.In addition, a system which can monitor the blade deflection with an eddy current displacement sensor and can change the position of the blade guide with an piezoceramic stack was made for trial purposes and, moreover, the control method for it was examined. From some experiments it was found that there is a certain relationship of F(Z_G, Z_S, Z_W)=0 among the sensor output Z_S and the deviation of cutting path Z_W and the blade guide position Z_G. Therefore, it is thought that the cutting deviation can be suppressed if the blade guide position Z_G is changed so that the equation F(Z_G, Z_S, 0)=0 is satisfied.

在外径刀片切片加工中，加工时产生的刀片挠度对切割精度影响很大。叶片偏磨是由叶片的非对称磨损、叶片侧面磨削性能的不平衡等多种因素引起的，这些因素很难完全排除。因此，在本研究中，研究了用叶片导向器主动控制叶片偏转的方法。刀片导向器的槽由用于切片的刀片本身制成。首先，检查了固定刀片导向器对切割精度的影响。在实验中，由陶瓷制成的刀片导向器被设置为厚度为0.1mm的所有刀片类型的电铸金刚石刀片，并且切割厚度为2 mm的AlTiC。其结果是，明确了可以利用叶片引导件来抑制叶片偏转。认为这种影响是由于磨削液在刀片侧面与导向面之间的楔形间隙中产生的动压引起的，并对上述实验进行了建模，从理论上分析了刀片导向对切削精度的影响。结果表明，通过使用刀导向器，可以将与正确的切削路径的切削偏差抑制在2/3左右。此外，还试验了用涡流位移传感器监视刀的挠曲，用压电陶瓷叠层改变刀导向器的位置的系统，并对该系统的控制方法进行了研究。通过实验发现，传感器输出Z_S与切削轨迹偏差Z_W和导刀位置Z_G之间存在一定的关系F（Z_G，Z_S，Z_W）=0。因此，认为如果改变刀片引导位置Z_G使得满足等式F（Z_G，Z_S，0）=0，则可以抑制切割偏差。

项目成果

Masahiro Mizuno, Toshirou Iyama, Noriaki Ikeda, Yukio Mori, Naoshi Wajima: "Effect of blade guide on cutoff accuracy in cutoff grinding with very-thin OD-blade"Journal of the Japan Society for Abrasive Technology. Vol.46, No.10. 515-520 (2002)

Masahiro Mizuno、Toshirou Iyama、Noriaki Ikeda、Yukio Mori、Naoshi Wajima：“刀片导轨对超薄外径刀片切割磨削中切割精度的影响”日本磨料技术学会杂志。

水野雅裕, 井山俊郎, 池田典亮, 森由喜男, 和嶋直: "極薄外周刃ブレードによる研削切断においてブレードガイドが切断精度に与える影響"砥粒加工学会誌. 46・10. 515-520 (2002)

Masahiro Mizuno、Toshiro Iyama、Noriaki Ikeda、Yukio Mori、Naoki Wajima：“超薄周边刀片磨削加工中刀片导轨对切削精度的影响”日本磨料加工学会杂志 46・10。 ）