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分析了常见的砂轮表面形貌检测方法的局限性,阐述了激光三角法的基本原理.在此基础上,提出了激光三角法检测砂轮表面三维形貌的方法和装置,利用它可以对砂轮表面进行扫描测量,得到表面各点的三维坐标,随后通过origin软件的绘图功能和数据分析功能得到砂轮表面的三维形貌图和单个砂粒的三维尺寸.在实验中,得到了在航空发动机叶片磨抛中使用的60#杯形CBN砂轮表面0.5mm×1.6mm面积的三维形貌图,某单个磨粒宽度为209.1μm,磨粒切刃突出高度为17.3μm.该结果与用美国WYKO的白光干涉三维表面形貌仪测量结果之间的误差为1.00%左右,这说明所采用的激光三角法测量砂轮表面三维形貌是可行的.
This paper analyzes the limitations of common grinding wheel surface morphology detection methods and expounds the basic principles of laser triangulation method.On the basis of this, a method and device for detecting three-dimensional topography of grinding wheel surface by laser triangulation method are proposed, Then get the three-dimensional coordinates of each point of the surface, and then get the three-dimensional topography of the wheel surface and the three-dimensional size of the single sand by the origin software’s drawing function and data analysis function.In the experiment, In the use of 60 # cup-shaped CBN wheel surface 0.5mm × 1.6mm area of the three-dimensional topography, a single abrasive width of 209.1μm, abrasive cutting edge protruding height of 17.3μm.The results with the United States WYKO white light interference The error between three-dimensional surface topography measurement results is about 1.00%, which shows that the laser triangulation method is feasible to measure the three-dimensional topography of grinding wheel surface.