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通过分析油管接箍内壁车削加工中的残余夹紧变形,利用功的互等定理研究弹复效应对残余夹紧变形的影响,建立了仅与毛坯内、外径尺寸及车削加工后内壁径向尺寸相关的接箍内壁圆度误差预测模型.同时,针对预测算法,进行了接箍内壁车削加工实验,并将加工后的内壁圆度误差数据与理论预测数据进行比对.结果表明,所建立的模型仅与毛坯内、外径尺寸及车削加工后内壁径向尺寸有关.利用该模型只需在加工前静态测量夹紧力作用下工件内壁的变形量,即可预测加工后工件内壁的圆度误差,其实测内壁圆度误差与理论预测的相对误差不超过6%.
By analyzing the residual clamping deformation in the machining of the inner wall of the tubing coupling, the reciprocal theorem of work is used to study the effect of the repulsion on the residual clamping deformation, and the relationship between the residual inner diameter and the radial inner diameter Dimensionally-correlated inner wall circularity error prediction model of the coupling was studied.At the same time, aiming at the prediction algorithm, the coupling inner-wall turning machining experiment was carried out, and the machined inner wall circularity error data were compared with the theoretical prediction data.The results show that the established Of the model is only related to the inner and outer diameter of the blank and the radial dimension of the inner wall after turning machining.Using this model, the deformation of the inner wall of the workpiece under the clamping force can be measured statically only before machining, Degree of error, in fact, measured the inner wall of the circular error and theoretical prediction of the relative error of not more than 6%.