CAJ | 학술논문

研究了磨料流抛光中磨粒微去除力学建模方法以及可控因素影响抛光效果的问题。以力为纽带，提出磨粒去除工件表面微凸材料的动力来源于三个方面---介质作用力、磨粒挤压载荷和磨粒冲击载荷。利用建立的力学模型，分析了磨料流加工的内在因素，其中可控因素包括：加工温度、加工压力、活塞的移动速度、磨料黏度、磨粒物理性质（如尺寸、硬度）等；研究了各可控影响因素与工件表面抛光质量及效率的关系；量化了可控因素的大小对磨粒作用在工件表面的力的影响程度；将磨粒作用在工件表面的力合成并分解为与活塞运动方向相同的轴向力和垂直于工件壁面的切向力，指出微去除效果随轴向力与径向力的比值改变而发生变化，设计出简易的测量轴向力和径向力的方案。用试验验证了所建模型和可控因素对抛光效果影响，以及工件表面的加工纹理方向直接影响工件表面粗糙度的减小率和材料去除率的正确性。
연구료마료류포광중마립미거제역학건모방법이급가공인소영향포광효과적문제。이력위뉴대，제출마립거제공건표면미철재료적동력래원우삼개방면---개질작용력、마립제압재하화마립충격재하。이용건립적역학모형，분석료마료류가공적내재인소，기중가공인소포괄：가공온도、가공압력、활새적이동속도、마료점도、마립물이성질（여척촌、경도）등；연구료각가공영향인소여공건표면포광질량급효솔적관계；양화료가공인소적대소대마립작용재공건표면적력적영향정도；장마립작용재공건표면적력합성병분해위여활새운동방향상동적축향력화수직우공건벽면적절향력，지출미거제효과수축향력여경향력적비치개변이발생변화，설계출간역적측량축향력화경향력적방안。용시험험증료소건모형화가공인소대포광효과영향，이급공건표면적가공문리방향직접영향공건표면조조도적감소솔화재료거제솔적정학성。
The driving force mode of micro-cutting and the controllable factors of polishing effects in abrasive flow machining were studied .The source of micro-cutting force contained medium force , squeezing load among gains and grain impact force were presented and their force models were built . Controllable influencing factors contained process temperature ,process pressure ,piston velocity and medium viscosity ,grain properties(such as size and hardness) and so on .The relation among controlla-ble influencing factors and the polishing effects of surface roughness and material removing rate was studied by the physical quantity‘force’ ,and the effect extent on the workpiece surface were quantized by active grain force acting on workpiece surface .Active grain forces acting on workpiece surface were translated into axial force and radial force ,the ratio of which would affect micro-cutting effect .The handy measuring equipment of axial force and radial force was proposed .The method of mode and research’s validity were verified by experiments ,it is found that the direction of processing track on workpiece will affect the final roughness and material removing rate severely .