三维强化外翅片换热管加工机构设计

Design of High Performance 3D Outside Finned Tube Machining Mechanism

为了改善当前外翅片换热管加工设备效率不高、成形翅片强度不足和自动化程度不足等问题,对三维强化外翅片换热管的加工机构设计进行了研究。设计了一种装有刨刀阵列的翅片管加工机构,并对该机构进行了结构分析,阐述主要零件之间的相对运动及约束情况。根据预期翅片的形状,给出了刨刀刀尖的预期轨迹,对加工机构动作的临界状态进行了力学分析,给出了加工机构的相关参数的取值依据。最后通过研制加工机构样机进行换热管翅片加工,验证了设计的可行性。

In order to solve problems such as low efficiency,insufficiency of fin strength and automation duringthe manufacturing of three-dimensional outside finned tube,a novel machining mechanism was designed and produced.The mechanism was developed with a planer tool array inside,and its structural characteristics were analyzed,which mainly include the relative motions and constraints between the parts of the machining mechanism.According to the expected shape of the fins,the expected trajectory of planer tool was made out,and the parameters selection of the machining mechanism was carried outbased on the mechanical analysis of the critical state.Finally,the feasibility was verifiedby carrying out some experiments using the prototypeof the designed mechanism.