| 基于多体理论模型的加工中心热误差补偿技术 |
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| 引用本文： | 刘又午,章青,赵小松,张志飞,张永丹.基于多体理论模型的加工中心热误差补偿技术[J].机械工程学报,2002,38(1):127-130. |
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| 作者姓名： | 刘又午 章青 赵小松 张志飞 张永丹 |
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| 作者单位： | 1. 天津大学机械工程学院,天津,300072
2. 天津职业技术师范学院 |
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| 基金项目： | 国家“九五”攀登计划预选项目（PD9521910） |
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| 摘 要： | 基于多体系统理论，建立了数控加工中心热误差模型，并提出其误差补偿方法。以三坐标ＭＡＫＩＮＯ加工中心为例，建立了具体模型并进行参数辨识。优选了４个测温点，实时测量其温度，作为误差参数辨识模型的输入值，实现了软件实时补偿。在该加工中心上分别沿３个坐标方向加工一系列表面并比较加入热误差补偿的结果，测量结果表明补偿效果显著。实践说明所建热误差模型的有效性和补偿方法的可行性。
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| 关 键 词： | 多体系统理论 加工中心 热误差 补偿技术 |
| 修稿时间： | 2001年3月30日 |
MULTI-BODY SYSTEM-BASED TECHNIQUE FOR COMPENSATING THERMAL ERRORS IN MACHINING CENTERS |
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| Liu Youwu,Zhang Qing,Zhao Xiaosong,Zhang Zhifei.MULTI-BODY SYSTEM-BASED TECHNIQUE FOR COMPENSATING THERMAL ERRORS IN MACHINING CENTERS[J].Chinese Journal of Mechanical Engineering,2002,38(1):127-130. |
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| Authors: | Liu Youwu Zhang Qing Zhao Xiaosong Zhang Zhifei |
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| Abstract: | Based on MBS (Multi-body system), an error model is presented here for the thermal errors in machining centers as well as the related compensation method. Taking three-axis MAKINO machining center as an example, a specific error model is set up through theoretically analyzing and experimentally parameter-identifying. Four temperature sensors are selected after optimization, and the temperature changes from their readings offered as the inputs to the error parameter models. Then a real-time software compensation is carried out, a set of small surfaces are cut on the machining center along the x, y and z-axis with and without error compensation. The measurement results from CMM show an obvious improvement is obtained after the real-time compensation. Thus the facts above verified the validity and feasibility of this error model and compensation method. |
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| Keywords: | Multi-body system theory Machining center Thermal error Compensation technique |
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