电弧熔丝增材随动锤击精整-消应力过程对装置结构变形的影响

Influence of wire-arc additive on device structure deformation follow-up hammering finishing-stress relief process

电弧熔丝增材随动锤击精整-消应力过程对增材装置整体结构变形存在一定的影响,为保证增材设备的使用精度,分析了不同锤击气压、锤击位置对设备结构变形的影响。解析计算出锤击气压与锤击速度的关系,建立了大型电弧增材设备框梁结构承载有限元分析模型,分析、确立了锤击过程中横梁受到的锤击反力,并根据工作位置、锤击气压的不同设计了15种工况,对各工况进行了瞬态动力学分析。分析结果显示,在各锤击气压下,锤击对横梁重力方向的变形影响最大,最大变形区域出现在横梁中央部位。该研究为设备后续的优化提供了依据,具有一定的工程应用价值。

The wire-arc additive follow-up hammering finishing-stress relief process has a crucial influence on the overall structural deformation of additive device.Therefore,in order to ensure the use accuracy of additive device,the influences of different hammering air pressures and hammering positions on the deformation of device structure were analyzed.Then,the relationship between hammering air pressure and hammering velocity was calculated analytically,and the finite element analysis model for the bearing capacity of frame-beam structure for large wire-arc additive device was established to analyze and determine the hammering reaction force on the beam during the hammering process.Furthermore,based on the different working positions and hammering air pressures,fifteen working conditions were designed,and the transient dynamic analysis was carried out for each working condition.The analysis results show that under each hammering air pressure,the impact of hammering on the deformation of beam along the gravity direction is the greatest,and the largest deformation region appears in the center of beam.Thus,the research provides a basis for the subsequent optimization of device and has certain engineering application value.