CAJ | 학술논문

本文介绍了磨粒流动力光整加工的原理，基于Navier-Stokes方程和流体流动连续性方程，建立了磨粒流动力光整加工中硬质合金棒与工件楔形接触区流体动压力的三维模型；应用Matlab对接触区三维流体动压力进行求解，结果表明：流体动压力随硬质合金棒转速和磨粒流动力粘度的增大而增大，随硬质合金棒与工件之间间隙的增大而减小。压力峰值发生在最小间隙区域，当间隙逐渐变大时，峰值区域逐渐前移并且变宽。在硬质合金棒浸入磨粒流深度方向，除边缘处有侧泄外，流体动压力相同。
본문개소료마립류동력광정가공적원리，기우Navier-Stokes방정화류체류동련속성방정，건립료마립류동력광정가공중경질합금봉여공건설형접촉구류체동압력적삼유모형；응용Matlab대접촉구삼유류체동압력진행구해，결과표명：류체동압력수경질합금봉전속화마립류동력점도적증대이증대，수경질합금봉여공건지간간극적증대이감소。압력봉치발생재최소간극구역，당간극축점변대시，봉치구역축점전이병차변관。재경질합금봉침입마립류심도방향，제변연처유측설외，류체동압력상동。
The principle of abrasive flow dy-namical finishing machining is introduced, and the three-dimensional hydrodynamic pressure model of wedge-like zone between cemented carbide cylinder and workpiece is established based on Navier-Stoke and continuity equation. The solution of three-dimensional hydrodynamic pressure shows that the hydrodynamic pressure is directly propor-tional to the velocity of cemented carbide cylinder and the dynamic viscosity of abrasive lfow and inversely propor-tional to the minimum clearance between the cemented carbide cylinder and workpiece. And the peak pressure is generated just in the minimum clearance region. When the minimum clearance becomes bigger gradually, the peak pressure region is gradually wider and moving forward. It can also be concluded that the pressure distribution is uni-form in the direction of depth of cemented carbide robust which immerse in the abrasive lfow.