Study on the form shaping theory for machine tools and its applications

机床成形理论及其应用研究

• 批准号: 05302031
• 负责人: INASAKI Ichiro
• 金额: $ 6.98万
• 依托单位: KEIO University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05302031/
• 关键词: Machine tools; From shaping theory; Error analysis; Five-axis Machinig Center; Accuracy Design

In this co-operative work, the form shaping theory for machine tools was systematized for comprehensive applications to machine tool design, error analysis as well as compensation, and programing for multi-axis machine tools. The main results obtained in this study are summarized as follows :(1)By applying the homogeneous coordinate transfer matrix, a comprehensive form shaping theory for machine tools was established. This mathematical model of machine tools enables us to simulate the generating motion of machine tools in the computer. Errors in the machine tools such as positioning error, straightness error, and alignment errors, can be taken into account in the simulation.(2)The influences of those errors on the machining accuracy were investigated quantitatively for turning machines and milling machines. Such evaluations were performed for some variations of turning and milling machines which were derived by changing the order of the form shaping code.(3)The algorithm based on the form shaping theory makes it possible to select the possible to select the possible configurations which have 5 degrees of freedom. An algorithm was also proposed to evaluate the machine tool configuration from the view point of floor space.(4)The method for identifying the error sources in a machine tool through the measurement of machined workpiece accuracy was proposed.The availability of the method was confirmed by computer simulations.(5)The general post-processor which converts collision-free CL data for 5-axis control NC machine tools consisting of three translational axs and two rotational ones were established. To improve the machining accuracy and efficiency, the study was extended to make use of the most of side cutting edge of tapered boll endmill as well as top cutting one. The use of side cutting edge was experimentally found to be valid.

在这项合作工作中，系统化了机床的形状成形理论，以便在机床设计、误差分析与补偿以及多轴机床的编程中得到综合应用。主要研究成果如下：（1）应用齐次坐标传递矩阵，建立了一套完整的机床形状成形理论。这种机床的数学模型使我们能够在计算机中模拟机床的展成运动。机床中的误差，如定位误差、直线度误差和对准误差，可以在仿真中考虑。（2）定量研究了这些误差对车、铣床加工精度的影响。这样的评价进行了一些变化的车削和铣削机床，这是通过改变的形式成形代码的顺序。（3）基于形状成形理论的算法使选择可能性成为可能，选择可能性具有5个自由度。提出了从占地面积角度评价机床配置的算法。（4）提出了通过测量已加工工件精度来识别机床误差源的方法，并通过计算机仿真验证了该方法的有效性。（5）建立了三平移两旋转五轴数控机床无碰撞CL数据转换的通用后置处理器。为了提高加工精度和效率，将研究扩展到利用圆锥体立铣刀的大部分侧刃和顶刃。实验发现侧切削刃的使用是有效的。

项目成果

S.Sakamoto: "Analysis of Generating Motion for Five-Axis Machining Centers" Transactions of NAMRI/SME. XXI. 287-293 (1993)

S.Sakamoto：“五轴加工中心生成运动的分析”NAMRI/SME 交易。

竹内芳美: "工具の先端切刃と側面切刃を使用した5軸制御加工" 精密工学会秋季大会学術講演会論文集. 213-213 (1994)

Yoshimi Takeuchi：“使用刀具尖端和侧面切削刃的五轴控制加工”日本精密工程学会秋季会议记录 213-213 (1994)。

N.Sugimura: "Design and analysis of a new type multi-funcitional machine tool" Proceedings of American Society for Precision Engineering. 289-292 (1994)

N.Sugimura：“新型多功能机床的设计与分析”美国精密工程学会论文集。

R.Harumato and I.Inasaki: "Error Analysis of Machine Tools Using Form Shaping Function" Transactions of the Japan Society of Precision Engineers. C,59-06. 915-920 (1993)

R.Harumato 和 I.Inasaki：“使用成形功能的机床误差分析”日本精密工程学会会刊。

S.Sakamoto and I.Inasaki: "Error Analysis of Precision Machine Tools" Proceedings of the 3rd Intermational Conference on Ultraprecision in Manufacturing Engineering. 245-248 (1994)

S.Sakamoto 和 I.Inasaki：“精密机床的误差分析”第三届制造工程超精密国际会议论文集。