Advanced Thermal Error Compensation of a Floor Type Machining Centre Allowing for the Influence of Interchangeable Spindle Heads
Advanced Thermal Error Compensation of a Floor Type Machining Centre Allowing for the Influence of Interchangeable Spindle Heads
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考虑到可互换主轴头影响的落地式加工中心的先进热误差补偿
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
J. Hornych
中科院分区：
文献类型：
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作者：
M. Mareš;O. Horejš;J. Hornych
由内外部热沉和热源引起的热误差占机床总误差的50%以上。对加工精度和机床时间利用率的要求仍在不断提高。因此，研究MT结构的热行为对于成功制造至关重要。补偿热相关工具中心点（TCP）位移的直接（工具和工件之间的测量）和间接（预测模型）方法可用于降低对MT及其环境的热流或温度控制的敏感性。热误差间接补偿由于其成本效益和易于实现而被广泛采用以减少热误差。本文是对复杂MT热行为建模的科学工作的延续，使用具有物理基础的动态方法：热传递函数（TF）。以前发表的作品侧重于中型MT在这里扩展到包括重型MT应用。特别注意的是有关补偿的问题所造成的可互换的主轴头的热误差。
Thermal errors caused by internal and external heat sinks and sources may cause more than 50% of machine tool (MT) total error. Demands on machining accuracy and machine time utilization are still increasing. Therefore, research on thermal behaviour of MT structures is crucial for successful manufacturing. Direct (measuring between tool and work-piece) and indirect (predictive models) approaches to compensation of thermo-dependent tool centre point (TCP) displacement can be used to reduce sensitivity to heat flow or temperature control of MT and its environment. Thermal error indirect compensation is one of the techniques widely employed to reduce thermal errors due to its cost-effectiveness and ease of implementation. This paper is a continuation of scientific work on the modelling of complex MT thermal behaviour using a dynamic method with a physical basis: thermal transfer functions (TF). Previously published works focusing on middle-sized MTs are extended here to include heavy-duty MT application. Particular attention is paid to issues concerning compensation of thermal errors caused by interchangeable spindle heads.