A Study on Highly Function Integrated Spindle System for Advanced FMS

先进FMS的高性能集成主轴系统研究

• 批准号: 08455071
• 负责人: SHINNO Hidenori
• 金额: $ 4.99万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08455071/
• 关键词: Machine Tools; Flexible Manufacturing System; Highly Function Integrated Spindle System; Two-Layred Spindle; Ultrasonic Waves; In-Process Measurement; Bearing Preload; Joints; 高度機能集積形主軸; 多重主軸; 熱変形

It becomes more important to realize highly function integrated spindle system for machine tool in order to develop the advanced flexible manufacturing system toward the 21st century. That kind of spindle system is characterized by higher accuracy, wider range of speed, integrated multiple-function and so on., with advent of the new manufacturing requirement. In this research, some studies which are necessary and indispensable for design of highly function integrated spindle system have been carried out. The first objective is the measurement of contact pressure of the joint between the bearing and its housing in the main spindle system. The second is how to control the due contact pressure in the machine work condition. The third is concerned with bearing preload measurement.The proposed method for contact pressure measurement using ultrasonic waves is effective even if the joint consists of cylindrical surfaces. And also, the parameter by wavelet transform of echo is significantly im … More portant for evaluating the contact pressure.The control of contact pressure has been basically possible by means of the proposed system named "Taper joint type bearing housing". It has sufficient function available for changing the contact pressure of the joint between the bearing and its housing.The bearing preload has been measured by the compressive strain of bearing collar for outer ring. The output of strain gage has significant relationship with the preload and the elongation of the spindle.A two-layred spindle system, which is basic configuration of multiple-layred type, has been proposed based on the results of these studies. The thermal behavior in the main spindle structure has been investigated to a various extent using the headstock model with a two-layred spindle, finally aiming at the proposal of the due design methodology. The basic thermal behavior and the mutural effects between inner and outer spindle units has been clarified. It is considered to be mainly influenced by the balance between heat sources in the body structure.The cooling effects of air flow in the spindle unit, especially the enclosed space has been ascertained using the proposed cooling system. The remedy of thermal deformation is basically possible using such a cooling system in the control of the heat transfer between the inner and outer spindle units. Less

为了发展面向21世纪的先进柔性制造系统，实现机床主轴系统的高功能集成化显得尤为重要。这种主轴系统具有精度高、调速范围宽、多功能一体化等特点，随着新的制造要求的出现。本研究进行了一些对于高功能集成主轴系统设计必要且不可或缺的研究。第一个目标是测量主轴系统中轴承与轴承座之间的接触压力。二是如何控制机器工作状态下的应有接触压力。第三是关于轴承预紧力的测量，提出的超声波测量接触压力的方法即使是由圆柱表面组成的接头也是有效的。同时，通过对回波信号的小波变换， ...更多信息 通过提出的“锥接式轴承箱”系统，接触压力的控制已基本成为可能。该方法具有改变轴承与轴承座结合面接触压力的功能，通过测量外圈压环的压应变来测量轴承的预紧力。应变片的输出与主轴的预紧力和伸长量有显著的关系，在此基础上提出了一种双层结构主轴系统，这是多层结构主轴系统的基本结构。利用双层主轴箱模型，对主轴箱结构的热行为进行了不同程度的研究，并提出了相应的设计方法。阐明了内、外主轴单元的基本热行为及其相互影响。分析认为，主轴单元的冷却效果主要受机体结构中各热源之间的平衡影响，并利用所设计的冷却系统，对主轴单元尤其是封闭空间内的气流冷却效果进行了验证。热变形的补救基本上是可能的，使用这种冷却系统来控制内主轴单元与外主轴单元之间的热传递。少

项目成果

吉村,稲場,新野,伊東: "システムマシン用二層主軸構造の熱的特性(その2,スピンドルユニット内の通風冷却効果)" 日本機械学会第74期全国大会講演論文集. IV. 305-306 (1996)

Yoshimura、Inaba、Niino、Ito：“系统机器的两层主轴结构的热特性（第 2 部分，主轴单元的通风冷却效果）”第 74 届日本机械工程师学会全国会议论文集 IV。 305-306（1996）