2004 Fiscal Year Final Research Report Summary
Development of New NC Controller for 5-axis Control Machining Center with Real Time Control
| Project/Area Number |
14550098
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
機械工作・生産工学
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| Research Institution | Kanazawa University |
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Principal Investigator |
KAMIYA Yoshitugu Kanazawa University, Graduate School of Natural Science and Technology, Professor, 自然科学研究科, 教授 (80092774)
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| Co-Investigator(Kenkyū-buntansha) |
SEKI Hiroaki Kanazawa University, Graduate School of Natural Science and Technology, Associate Professor, 自然科学研究科, 助教授 (20270887)
HIKIZU Masatosi Kanazawa University, Graduate School of Natural Science and Technology, Research Assistant, 自然科学研究科, 助手 (10272949)
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| Project Period (FY) |
2002 – 2004
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| Keywords | NC control / 5-axis machining center / real time control / pulse series / motion control / Jacobian matrix / V-F transformer |
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| Research Abstract |
A controller for driving multi-axis machine was combined with a Jacobian matrix, V-F transformer, and forward kinematics. Different from previous ones, this NC controller for driving multi-axis machine can generate a pulse series in real time so that the machining velocity and shape can be changed in real time to meet machining requirements. A simulation of machining a circle by using the new NC controller for 5-axis control machining center demonstrated its effectiveness. For machining pieces with complicated shapes, multi-axis machines, such as 5-axis control machining centers, are widely used because orientation of the tool is usually required during machining. For example, in order to obtain a tool path accurately, tool orientation is required to keep in the direction of normal line of a cured machining trace. In addition to tool orientation, the motional trace of the tool tip and its velocity must be controlled at a desired value under machining cured surface. In the case of machining a work with complicated shape, it is difficult to generate the tool path accurately according to the interpolation of line and curve by using a conventional NC controller. To solve these questions, an NC controlling method is proposed. In this method, the corresponding pulse series for movement and motional velocity of a driving axis can be generated in real time with computer software to obtain a desired tool path. Just like control a multi-joint robot, a 5-axis machining center can be controlled by building coordinate system and calculating its Jacobian matrix.
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