The reasons for the stable cutting speed of the round nose cutter are explained below. , It is not easy to collapse, so the life of the tool will be better than that of the end mill. In addition, the contact area of ​​the ball knife with the workpiece is the edge of the R angle, so the knife spacing can be larger in the finishing process, and the machined surface also has an excellent effect. 　　

You can see that when the ball cutter is milling a 3D workpiece, the contact position of the blade and the workpiece will constantly change, so the cutting speed is always changing.1 Features of end mills When milling aWholesale OEM Automotive Parts Injection Molding Factory 2D-shaped workpiece, since the contact area with the workpiece is the outer edge and the bottom surface, it is possible to use extremely efficient numerical values ​​regardless of the distance between the tools and the depth of cut.

Generally speaking, end mills are very suitable for 2D-shaped workpieces, but when applied to 3D-shaped mold processing, they are not so suitable. Because the bottom of the round nose knife is flat, the horizontal knife spacing of the round nose knife can be larger than that of the ball knife. In traditional mold processing, end mills are also used for roughing. The cutting speed is stable at two points a and c, so this area is where the cutting edge is cutting the workpiece, and a good machining surface can be obtained. Integral tool 　

However, the relative material cost of making the knife will increase, and the knife edge needs to be reground after it is wo out before it can be used again. When the material of the blade is harder than the material to be cut and the cutting speed is reached, the contact area between the material and the cutting edge will be removed. 　　 

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