Development of Pulse Forming Method Utilizing Servo Press and Die with Internal Channel for Lubricant

利用伺服压力机和内部润滑通道模具的脉冲成形方法的开发

• 批准号: 24760106
• 负责人: MATSUMOTO Ryo
• 金额: $ 2.91万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24760106/
• 关键词: 塑性加工; 鍛造; 押出し; 加工モーション制御; サーボプレス; トライボロジー

A forming method utilizing a punch having an internal channel for supplying liquid lubricant to the punch nose was proposed. (1) the proposed forming method was applied to forming of pure titanium specimen using a servo press. The formed titanium specimen with formed hole depth/diameter of 2.0 was successfully obtained in the proposed forming method with appropriate pulse punch ram motion. (2) the proposed forming method was found to produce the formed holes with high shape accuracy. The shape accuracy of the formed hole was discussed with experimental and finite element simulation results in terms of lubrication state and temperature change. (3) The proposed forming method with pulse punch ram motion was applied to combined forward-backward extrusion process with a high height/diameter ratio. The coefficient of shear friction at the specimen–punch interface was identified from the material flow of the aluminum specimen during the extrusion with pulse punch ram motion.

提出了一种利用具有用于向凸模鼻部供应液体润滑剂的内部通道的凸模的成形方法。(1)将所提出的成形方法应用于纯钛试件的伺服压力机成形。在所提出的成形方法中，通过适当的脉冲冲头运动，成功地获得了成形孔深/直径为2.0的成形钛试样。(2)发现所提出的成形方法产生具有高形状精度的成形孔。结合实验和有限元模拟结果，从润滑状态和温度变化两个方面讨论了成形孔的形状精度。(3)将脉冲冲杆运动的成形方法应用于大高径比的正、反挤压成形。在挤压过程中，脉冲冲头运动的铝试样的材料流动，确定在挤压冲头界面处的剪切摩擦系数。

项目成果

R. Matsumoto, H. Utsunomiya

R.松本、H.宇都宫

• 发表时间: 2013
• 作者: R. Matsumoto;H. Utsunomiya
• 通讯作者: H. Utsunomiya

Shape accuracy in the forming of deep holes with retreat and advance pulse ram motion on a servo press

• DOI: 10.1016/j.jmatprotec.2012.11.023
• 发表时间: 2013-05-01
• 期刊: JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
• 影响因子: 6.3
• 作者: Matsumoto, Ryo;Jeon, Jae-Yeol;Utsunomiya, Hiroshi
• 通讯作者: Utsunomiya, Hiroshi

サーボプレスを用いたパルス穴あけ加工における加工穴の形状精度

使用伺服压力机进行脉冲钻孔时加工孔的形状精度

• 发表时间: 2013
• 作者: 松本良;J.Y. Jeon;宇都宮裕
• 通讯作者: 宇都宮裕

Enhancement of Forming Limit in Backward Extrusion with Pulsating Lubricant Supply on Servo Press

伺服压力机脉动润滑油供给提高反向挤压成形极限

• 发表时间: 2012
• 作者: R. Matsumoto;J.Y. Jeon;H. Utsunomiya
• 通讯作者: H. Utsunomiya

Experimental and numerical analysis of friction in high aspect ratio combined forward-backward extrusion with retreat and advance pulse ram motion on a servo press

• DOI: 10.1016/j.jmatprotec.2013.11.017
• 发表时间: 2014-04
• 期刊: Journal of Materials Processing Technology
• 影响因子: 6.3
• 作者: R. Matsumoto;Kazunori Hayashi;H. Utsunomiya