Tool Chucking Mechanism with Insensitiveness to Centrifugal Force for Ultra High-speed Spindle

超高速主轴对离心力不敏感的刀具夹紧机构

• 批准号: 13650131
• 负责人: SHIMIZU Shinji
• 金额: $ 1.86万
• 依托单位: Sophia University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650131/
• 关键词: high-speed spindle; tool-chucking mechanism; centrifugal force; accuracy; stiffness; wedge mechanism; finite element method; contact condition; 有限要素法解析

In order to improve accuracy and efficiency, the development of high-speed machining is demanded strongly. To achieve this demand, it is essential to develop the high-performance tool-chucking mechanism applicable to high-speed spindle. Under the high-speed rotation, accuracy and stiffness drop worse because of effect of large centrifugal force on the connection between the tool and spindle. To solve this problem, various types of double-face contact tool-interface are developing actively. By using those interfaces, the allowable rotational speed becomes higher. However, there is still the limit of the rotational speed possible to use those interfaces, and this limitation is one of the essential obstructions for speed-up of spindle in the future. In this study, to solve this problem essentially, the novel tool chucking mechanisms, which make use of the centrifugal force in order to strengthen the tool chucking force, is proposed. At first, the basic specification needed for the mechani … More sm is determined. And then, the basic model of the mechanism is designed, and its tool-chucking characteristics are examined with finite element method. Furthermore, the test model is actually made in order to measure the tool chucking performance. As the result, it is found out to be difficult to obtain enough tool-chucking torque, since the tolerances of the components are too severe to machine practically. Then the structure of the mechanism is simplified drastically and becomes insensitive to dimensional error of components. In addition, by incorporating the tool-stopper for locating tools and the guide mechanism for wedge movement, the performance of chucking action is improved. Finally, the characteristics of improved model are evaluated with theoretical analysis and finite element method, and then, followings are confirmed : the tool chucking force can be magnified more than ten times as strong as the drawing force. The mechanism provides almost same torque as conventional tool-chucks such as collet chucks. By action of the centrifugal force, the tool chucking force under the spindle rotation of 10,000min-1 becomes 18% larger than that under standstill. From above mentioned results, it can be said that the developed tool-chucking mechanism is applicable to ultra-high speed spindle. Less

为了提高加工精度和效率，对高速加工的发展提出了更高的要求。为满足这一要求，研制适用于高速主轴的高性能刀盘机构是非常必要的。高速旋转时，由于较大的离心力对刀具与主轴的连接产生较大的影响，精度和刚度下降较大。为了解决这一问题，各种类型的双面接触工具接口正在积极发展。通过使用这些接口，允许的转速变得更高。然而，使用这些接口的转速仍然存在极限，这是未来主轴提速的根本障碍之一。在本研究中，为了从根本上解决这一问题，提出了一种新型的刀具夹持机构，该机构利用离心力来增强刀具夹持力。首先，机械…所需的基本规格更多的sm是坚定的。然后，设计了该机构的基本模型，并用有限元方法对其夹具特性进行了分析。此外，实际制作的测试模型是为了测量刀具卡盘的性能。结果发现，由于零件的公差太大，无法实际加工，很难获得足够的夹具扭矩。这样就大大简化了机构的结构，对零件的尺寸误差不再敏感。此外，通过将用于定位刀具的工具挡块和用于楔形运动的导向机构相结合，提高了卡盘动作的性能。最后，用理论分析和有限元方法对改进模型的性能进行了评价，证实了刀具夹持力可以放大到拉拔力的十倍以上。该机构提供的扭矩几乎与传统的工具卡盘(如夹头卡盘)相同。在离心力的作用下，主轴旋转10000min~(-1)时的夹持力比静止时大18%。从上述结果可以看出，研制的刀盘机构适用于超高速主轴。较少

项目成果

「検査・処置を受ける子どもへの説明と納得」に関するケアモデルの実践と評価(その2)-子どもの力を引き出す関わりと具体的な看護の技術について-

“对接受检查和治疗的儿童进行解释和理解”相关的护理模式的实施和评估（第2部分） - 发挥儿童优势的关系和具体的护理技术 -

• 期刊: 日本看護科学会誌 (投稿中)
• 作者: 松森直美;蝦名美智子他
• 通讯作者: 蝦名美智子他

「検査・処置を受ける子どもへの説明と納得」に関するケアモデルの実践と評価(その4)-病棟への波及効果-

“对接受检查和治疗的儿童的解释和理解”相关护理模式的实施和评估（第4部分） -病房的连锁反应-

• 期刊: 日本看護科学会誌 (投稿中)
• 作者: 笹木忍;蝦名美智子他
• 通讯作者: 蝦名美智子他

New Chucking Mechanism of Cutting Tool for Ultra High Speed Spindle (2)

超高速主轴刀具新型夹紧机构（二）

• 发表时间: 2002
• 期刊: Proc.of 2002 Spring Meeting of The Japan Society for Precision Engineering A14
• 作者: Shinji Shimizu et al.

「検査・処置を受ける子どもへの説明と納得」に関するケアモデルの実践と評価(その1)-検査・処置を受ける子どもと家族への説明に関する看護士の認識の変化-

“对接受检查和手术的儿童进行解释和理解”的护理模式的实施和评估（第1部分） - 护士对接受检查和手术的儿童及其家人的解释的看法的变化 -

• 期刊: 日本看護科学会誌 (投稿中)
• 作者: 江本リナ;蝦名美智子他
• 通讯作者: 蝦名美智子他

清水伸二, 他2名: "超高速回転対応エンドミルチャッキング機構の提案"2002年度精密工学会春季大会学術講演会講演論文集. (印刷中). (2002)

Shinji Shimizu 等 2 人：“用于超高速旋转的立铣刀夹紧机构的提案”日本精密工程学会 2002 年春季会议论文集（2002 年出版）。