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冷镦机床身的轻量化是锻压机床绿色设计和制造的必然趋势。针对冷镦机床身热固耦合的结构特点,分析了床身工作时温度场、热应力和热力耦合特性;考虑到热力耦合作用下冷镦机床身结构优化过程的复杂性,提出了通过床身热分析、拓扑优化与再设计环节的有效集成来解决热力耦合作用下冷镦机床身结构优化的建模和计算过程的简化方法,建立了冷镦机床身结构优化的一般流程;并以某型号冷镦机床身为例,基于Abaqus 6.11有限元分析软件,实现了床身的热分析、拓扑优化、再设计以及方案选优的整体结构优化过程;优化结果显示该型号冷镦机床身在体积减少了9.52%的同时其综合热力学性能也得到了较大程度的改善,从而验证了所提出方法和过程的有效性。
Cold heading machine is lightweight forging machine green design and manufacture of the inevitable trend. According to the structural characteristics of the thermomechanical coupling in the cold heading machine bed, the temperature field, thermal stress and thermal coupling characteristics of the bed body are analyzed. Taking into account the complexity of the optimization process of the cold heading machine body structure under the thermal coupling, Thermal analysis, topological optimization and re-design aspects of the effective integration to solve the thermal coupling of the cold heading machine bed structure optimization modeling and calculation of the simplified method to establish a cold heading machine bed structure optimization of the general process; and a model Cold-forging machine tool as an example, based on Abaqus 6.11 finite element analysis software, the thermal analysis, topology optimization, re-design and optimization of the overall structure of the bed have been realized. The results of the optimization show that the body of the cold- 9.52% at the same time its comprehensive thermodynamic performance has also been greatly improved to verify the effectiveness of the proposed method and process.