本文就平面研磨加工方式進行實驗與理論分析，探討磨削加工參數對研磨系統中製程係數之影響。磨削系統之製程係數主要包括有砂輪接觸剛性、工件磨耗係數與砂輪磨耗係數，此三者改變會影響著研磨製程之穩定性與加工品質優劣。而一般砂輪磨耗係數對系統穩定性影響不若其它製程係數大，因此在本文之探討重點放在砂輪接觸剛性與工件磨耗係數。
將捲積磨削力模式預測之垂直方向平均磨削力，配合實驗所量測之實際研磨深度，可以得到製程係數隨切削深度增加而產生之變化趨勢。而透過選擇加工參數，以光刀研磨方式及改變切深進給與工件速度等實驗方法，來觀察分析研磨系統中輸入之加工參數造成製程係數之影響。實驗結果切削深度越大，則工件磨耗係數會越小，而砂輪接觸剛性則越大。前者乃由於尺寸效應影響，後者則是因為單位面積上之接觸磨粒隨切深增加所造成。但在改變工件速度實驗結果看來，工件速度越快會使工件磨耗係數增加而砂輪接觸剛性下降，可能是由於工件速度變快造成實際磨削深度減小，才讓工件磨耗係數與砂輪接觸剛性有此變化趨勢。

This thesis investigates the effect of grinding process parameters on process coefficients in grinding system by using surface grinding machine. The main process coefficients include contact stiffness, cutting stiffness, and wheel wear resistance. All these parameters effect on the stability of grinding and the quality of products. Because of the less effect of wheel wear resistance on grinding stability, we focus on contact stiffness and cutting stiffness in this thesis.
From the combination of convolution force and real cutting depth, the tendencies of process coefficients vary with cutting depth. To observe the effect of process parameters on process coefficients, the experiments are taken in spark-out grinding and grind with varied cutting depth and workpiece speed. The results of experiments show that the larger in cutting depth, the smaller in cutting stiffness, and the bigger in contact stiffness. The fore is caused by size effect and the latter is made because of the increase of the contact grits on unit area with increasing cutting depth. From the results of changing workpiece speed experiments, the increase of workpiece speed will make cutting stiffness increase but contact stiffness decrease in contrary. The reason is the real cutting depth decreasing with workpiece speed increasing, then it make cutting stiffness and contact stiffness vary in those tendencies.

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