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Near dry cutting with ultra sonic vibration

超声波振动近干式切削

基本信息

批准号：
18360072
负责人：
INASAKI Ichiro
金额：
$ 7.83万
依托单位：
Chubu University (2007)Keio University (2006)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18360072/
关键词：
Vibration Cutting Ultra sonic vibration Small hole machining Difficult to machine materials Drilling Tool wear Cutting force Suppression of burr formation 超音波振動

项目摘要

In this research, new devices of ultrasonic vibration (USV) cutting for small hole drilling and milling are developed. The USV unit is installed in the HSK tool shank, and the USV cutting is, therefore, easily carried out by attaching the USV tool shank to the spindle of an usual machining center. The research has been carried out for two years form 2006 to 2007. Firstly, the USV unit for axial vibration mode was developed, and the performance was analyzed through the cutting tests using a vertical machining center. Small hole drilling operations were applied to aluminum alloy, titanium alloy and stainless steal. The results of the cutting tests show the remarkable effect of the USV in the decrease of cutting force. The cutting force decreases to 20% of the one obtained by conventional cutting method in small hole drilling, and the improvement in the surface roughness of machine hole was also obtained. However, the USV application causes the insufficient lubricant supply and the result … More ant temperature rise at cutting point. The occurrence of chipping at the chisel of drill was also observed. This is caused by the collision of chisel against the workpiece under USV with axial vibration. Secondly, the HSK tool shank with USV unit with torsional vibration mode was developed, and the performance was also analyzed by cutting tests. Especially, the effect of the USV application to the suppression of burr formation in small hole drilling process was investigated. The result shows that the burr formation at the outlet of small hole was effectively suppressed by applying the USV in torsional direction during drilling operation. The near dry cutting method was also applied to USV cutting process. It is pointed out that the near dry cutting method is useful for the USV cutting process. The same lubrication and, cooling effects were obtained as the case of conventional flood lubrication.The USV units developed in this research is very useful for the drilling operation of small holes from the viewpoint of the improvement of the machining accuracy and machining efficiency. Through out this research, the availability of the proposed system to the practical use for small hole drilling was pointed out. Less

本研究开发了一种用于小孔钻铣加工的超声振动切削装置。USV单元安装在HSK刀柄中，因此，通过将USV刀柄连接到普通加工中心的主轴上，可以轻松地进行USV切削。本研究从2006年至2007年进行了两年的研究。首先，研制了轴向振动超声波切削单元，并在立式加工中心上进行了切削试验，对其性能进行了分析。小孔钻削加工适用于铝合金、钛合金、不锈钢等。切削试验结果表明，超声刀在降低切削力方面效果显著。在小孔加工中，切削力仅为常规切削方法的20%，且加工孔的表面粗糙度也得到了改善。然而，USV应用导致润滑剂供应不足，结果 ...更多信息切割点温度升高。还观察到钻头凿子处发生碎裂。这是由于超声刀在轴向振动下，凿子与工件碰撞造成的。其次，研制了具有扭转振动模态的超声波振动单元的HSK刀柄，并通过切削试验对其性能进行了分析。特别地，研究了超声波在小孔钻削过程中抑制毛刺形成的效果。结果表明，在钻削过程中，采用扭转方向的超声振动，可有效地抑制小孔出口毛刺的形成。将准干式切削方法应用于USV切削加工。指出了近干切削方法在超声波切削加工中的应用。本研究所开发之超音波钻削装置，对于小孔钻削作业，从提高加工精度及加工效率的观点来看，是非常有用的。通过对该系统的研究，指出了该系统在小孔加工中的实用性。少