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Efficient and generalized method for measurement and evaluation of thermal deviation characteristics in Multi-task machine

多任务机热偏差特性测量与评估的高效通用方法

基本信息

批准号：
18560112
负责人：
SHIMIZU Shinji
金额：
$ 2.37万
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：
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-18560112/
关键词：
Multi-task machine Thermal deviation Evaluation method Linear motion Swing motion Thermal deformation mode

项目摘要

The purpose of this research is to establish the method for measurement and evaluation of thermal deviation characteristics caused by feed motions in Multi-task machine. The followings are revealed by this research.1. The measuring systems for evaluation of thermal deviation characteristics caused by linear motion in Z or X direction were developed for a multi-task machine. Using these systems, the characteristics were actually evaluated for liner motions (X or Z axis) and swing motion (B axis). Since these evaluation results corresponded to the structural form and the location of heat sources in the machine, the validity of this proposed method was clarified.2. The estimation of the thermal deformation mode is possible with synthetic evaluation of the measurement results and the information, such as a structural form of the machine. Since this estimation result corresponded to the temperature changes measured at some locations in the machine during the test, the validity of the estimation was clarified.3. For the standardization of this proposed method, the tests for each motion were done with two kinds of the measuring system. As the results, the followings were made clear.1) Using the target fixture in Z direction, the thermal deviation characteristics are evaluated sufficiently2) Since the location of this Z target fixture corresponds to the workpiece position, influence of the thermal deviations on the machining accuracy is evaluated directly3) To evaluate the thermal deformation mode and its mechanism more clearly, it is necessary to do the tests with the X target fixture in addition to the Z target fixture, and to evaluate the both results synthetically.4) Test with the Z target fixture is appropriate for the standardization of this proposed method.

本研究旨在建立多任务机床进给运动引起的热偏差特性的测量与评价方法。本研究发现：1.针对多任务机床，研制了Z、X方向直线运动引起的热偏差特性测试系统。使用这些系统，实际评估线性运动（X或Z轴）和摆动运动（B轴）的特性。由于这些评价结果与机器的结构形式和热源位置相对应，说明了该方法的有效性.通过对测量结果和诸如机器的结构形式的信息的综合评估，热变形模式的估计是可能的。由于该估计结果对应于测试期间在机器中某些位置处测量的温度变化，因此澄清了估计的有效性。为了使该方法标准化，用两种测量系统对每个运动进行了测试。结果表明：1）利用Z向靶夹具，可以直观地评价热偏差特性; 2）由于Z向靶夹具的位置与工件位置相对应，可以直观地评价热偏差对加工精度的影响; 3）为了更清楚地评价热变形模式及其机理，在Z靶夹具的基础上，还需要进行X靶夹具的试验，并对两种试验结果进行综合评价。4）Z靶夹具的试验适合于本方法的标准化。