【摘要】：采用低速、大切深、高進給工藝方案車削大螺距螺紋時,刀具左右后刀面存在明顯不均勻磨損,直接影響左右螺紋面的加工質量一致性和加工效率.已有的刀具后刀面磨損寬度測量方法僅反映出后刀面磨損寬度隨切削行程變化的平均性質,無法揭示后刀面磨損寬度的分布特性.為此,設計和制磨出一把用于車削螺距16 mm梯形外螺紋的刀具,采用等參數(shù)軸向分層切削方法進行左右后刀面磨損實驗,分析刀具后刀面磨損特征,構建刀具后刀面磨損寬度分布函數(shù),揭示出后刀面磨損寬度分布特性.結果表明:左右后刀面磨損寬度在切削刃長度和切削行程兩個方向上均呈現(xiàn)不同的分布特性,且左后刀面磨損明顯大于右后刀面磨損,上述方法可用于定量描述車削大螺距螺紋刀具后刀面磨損狀態(tài),評定不同切削行程條件下刀具左右后刀面磨損的差異性.
[Abstract]:When turning large pitch thread with low speed, large cutting depth and high feed process, there is obvious uneven wear on the left and right rear face of the tool, which directly affects the machining quality consistency and machining efficiency of the left and right thread surface. The existing methods for measuring the wear width of the rear tool surface only reflect the average property of the wear width of the rear tool surface with the cutting stroke, and can not reveal the distribution characteristics of the wear width of the rear tool surface. Therefore, a tool for turning 16 mm ladder external thread is designed and manufactured. The wear experiment of the left and right rear tool surface is carried out by using the equal parameter axial delamination cutting method. The wear characteristics of the tool rear tool surface are analyzed, the wear width distribution function of the tool rear tool surface is constructed, and the wear width distribution characteristics of the rear tool surface are revealed. The results show that the wear width of the left and right rear cutter surface is different in both the length of the cutting edge and the cutting stroke, and the wear of the left rear tool surface is obviously larger than that of the right rear tool surface wear. The above methods can be used to quantitatively describe the wear state of the rear tool surface of the turning large pitch thread tool, and to evaluate the difference of the left and right rear tool surface wear under different cutting stroke conditions.
【作者單位】： 哈爾濱理工大學高效切削及刀具國家地方聯(lián)合工程實驗室;
【分類號】：TG62

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本文編號：2502094