CAJ | 학술논문

提出一种离散型空间(椭圆形、马鞍形、相惯线形等)焊道的磨削加工技术——立方氮化硼(Cubic boron nitride, CBN)砂带当量随行磨削方法，该方法一方面基于测量技术以及磨削量预测模型，利用四轴联动以及恒压力浮动砂带磨削技术实现离散型空间焊道当量随形磨削加工，保证焊道的等余量控制；另一方面针对焊道材料的难加工特性，运用CBN砂带实现高效率、高精度磨削加工。阐述了当量随行磨削加工原理，建立随行磨削加工模型，分析随行运动误差。基于测量技术以及磨削量预测模型，建立当量磨削控制方程。针对椭圆形焊道典型零件——燃烧室机匣进行了磨削加工试验，得到其磨削余量厚度误差在±0.005 mm以内，证明该方法的可行性，得到焊道磨削的最优工艺(砂带线速度24 m/s，磨削压力170 N，工件转速1 r/min)，并且得到工件旋转速度是影响材料去除率最大的工艺参数。
제출일충리산형공간(타원형、마안형、상관선형등)한도적마삭가공기술——립방담화붕(Cubic boron nitride, CBN)사대당량수행마삭방법，해방법일방면기우측량기술이급마삭량예측모형，이용사축련동이급항압력부동사대마삭기술실현리산형공간한도당량수형마삭가공，보증한도적등여량공제；령일방면침대한도재료적난가공특성，운용CBN사대실현고효솔、고정도마삭가공。천술료당량수행마삭가공원리，건립수행마삭가공모형，분석수행운동오차。기우측량기술이급마삭량예측모형，건립당량마삭공제방정。침대타원형한도전형령건——연소실궤갑진행료마삭가공시험，득도기마삭여량후도오차재±0.005 mm이내，증명해방법적가행성，득도한도마삭적최우공예(사대선속도24 m/s，마삭압력170 N，공건전속1 r/min)，병차득도공건선전속도시영향재료거제솔최대적공예삼수。
A grinding technology about discrete type (circular, elliptical, saddle-shaped, etc) spatial welding seam is proposed—the cubic boron nitride(CBN) belt grinding method with traveling equivalence. On one hand, the method is based on the measurement technology and the prediction model of grinding depth, with the four-axes coordinated movement and constant pressure floating-type belt grinding, it can ensure the equal-margin control; on the other hand, alming at the difficult machining of the welding seam’s material, using of CBN belt can realize the high efficiency and accuracy. The processing principle of the belt grinding method with traveling equivalence and positive-stop is illustrated, the processing model of traveling grinding is built and the influence of grinding depth and swing angle is analyzed. Based on the measurement technology and the prediction model of grinding depth, governing equation of equivalent grinding is obtalned. In the end, the grinding test alming at the typical part of elliptical welding seam—the combustor casing—can make sure the error of grinding margin’s depth in ±0.005 mm, which proves the method’s feasibility, and obtalns the optimum processing parameters on grinding the welding seam(grinding belt liner speed:24 m/s, grinding force:170 N, workpiece rotating speed:1 r/min). Furthermore, the most influential processing parameter on material removal rate is the workpiece rotating speed.