碳化钨立铣刀用于加工有色金属材料，如高硅铝、石墨复合材料或木材。使用标准或平面PCD制造的端铣刀在这些应用中的成功率有限，因为刀具几何允许严重的断续切削。这导致零件表面光洁度差，PCD切削刃有缺口。螺旋PCD立铣刀已经开发出来，为铣削操作提供更自然的切削几何形状。试验结果表明，螺旋PCD立铣刀可以实现较高的切削速度和进给量，以及表面光洁度。

TUNGSTEN CARBIDE END MILLS ARE USED IN MANY APPLICATIONS FOR MACHINING NONFERROUS MATERIALS, SUCH AS HIGH SILICON ALUMINUM, GRAPHITE COMPOSITES, OR WOOD. END MILLS MADE WITH STANDARD OR FLAT PCD HAVE HAD LIMITED SUCCESS IN THESE APPLICATIONS BECAUSE THE TOOL GEOMETRY ALLOWS SEVERE INTERRUPTED CUTTING. THIS RESULTS IN A POOR SURFACE FINISH OF THE PART AND A CHIPPED PCD CUTTING EDGE. A HELICAL PCD END MILL HAS BEEN DEVELOPED TO PROVIDE A MORE NATURAL CUTTING GEOMETRY FOR MILLING OPERATIONS. TEST RESULTS SHOW THAT HIGH CUTTING SPEEDS AND FEEDS, AS WELL AS SURFACE FINISH, CAN BE ACHIEVED WITH A HELICAL PCD END MILL.