| 摘要 |
PURPOSE:To reduce the weight of an assembled cutting tool and enhance the accuracy of cutting and the quality of a cut surface, by making the body of the tool from a ceramic having a larger modulus of elasticity and a smaller specific gravity than steel. CONSTITUTION:A body 2 is made of an alumina ceramic by a strip-casting process and provided with grooves 5. The width of each groove 5 increases from its top toward its bottom. A blade 1 made of a very hard alloy and a wedge 3 are inserted in the groove 5 so that the blade is press-fitted on one side of the groove by the action of the wedge. Since the modulus of elasticity of the body 2 is high, the displacement of the cutting edge of the blade 1 is small and the accuracy of processing and the quality of a processed surface are high. |
