Tungsten Carbide Slotting Cutter (2/2)

Generally used for machining hardened tungsten carbide slotting cutters were tested negative rake angle form the top edge so that both sides of the cutting edge blade angle to obtain the corresponding negative, slotting process will have beveled cutting characteristics. By increasing the negative rake angle cutting method to improve depth profile shaper cutters nose and the side edge chipping capacity and wear resistance. And this feature is not only suitable for cutting hardened hobbing, but also for slotting process. In order to maintain tungsten carbide slotting cutter based on the accuracy of the tooth to improve the cutting performance, the former top general use -5 ° blade angle is appropriate.

The flank of tungsten carbide slotting cutter is helicoid, which only in its truncated plane will have involute. However, when tungsten carbide slotting cutter made front corner and rear corner, the cutting edge will deviate from the cut surface, the shape with the theoretical involute is there are some errors, and this error is difficult to measure directly. So this will be difficult in the grinding process, the shape of the cutting edge will be further amended, and the need for tungsten carbide slotting cutter pressure angle correction.

In addition, in order to break through the conventional configuration (cone) tungsten carbide slotting cutter easily to be chipped, slotting low accuracy, the researchers also tried a new configuration of tungsten carbide slotting cutter for profiled convex instead of the traditional cone and as a shaper cutter teeth rake. As a cross-section will make a substantial increase in the absolute value of negative rake angle; curved front flank and the lateral flank cross a certain line in both the conical surface of the corner, so that the side edge space curve to flatten in case of the distortion caused by difficult control of the shape of the curve in space of cutting edge and ensure the cutting performance and surface quality. Overall, shaped convex curved tungsten carbide slotting cutter effectively solve the contradiction between the traditional configuration exist in the configuration tool and precision, thereby increasing wear resistance and chipping capability resistance.

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