Three-ball cutter for treating surface layer of metal material to improve material properties and use method

Abstract

The invention relates to a surface treatment technology for forming a nano gradient texture on a surface layer of a shaft metal material, in particular to a three-ball cutter for treating the surface layer of the shaft metal material on a lathe to improve material properties, and a use method. A fixed seat is arranged on a fixed rod, three millesimal assistor mounting holes distributed in a 120 DEG angle manner are formed in the side face of the fixed seat; a fixed seat center hole is formed in the center of the fixed seat; the millesimal assistor mounting holes are communicated with the fixed seat center hole; three millesimal assistors distributed in a 120 DEG angle manner are mounted in the millesimal assistor mounting holes distributed in a 120 DEG angle manner; sintered carbide balls are arranged among the millesimal assistors and the fixed seat center holes and extrude out of the fixed seat center hole. According to the cutter and the use method, the sintered carbide balls roll on the surface of the rotating shaft metal material, the three-ball cutter move axially in a single direction of a sample, plastic deformation happens on the surface layer of the material, and crystal grains on the surface layer of the sample material are refined to form the nano gradient texture.

Description

technical field [0001] The invention relates to a surface treatment technology for forming a nano-gradient structure on the surface of a shaft-like metal material, in particular to a three-ball cutter for processing the surface of a shaft-like metal material on a lathe to improve material performance and a use method thereof. Background technique [0002] At present, the methods for forming gradient nanostructures on the surface of shaft metal materials include: surface mechanical grinding treatment method, rolling method, and surface mechanical rolling method. The surface mechanical grinding treatment method is to hit the surface of the material to be treated by high-speed moving projectiles, resulting in strong plastic deformation on the surface of the material. Disadvantages: The surface roughness of the processed material is relatively large. The surface mechanical rolling method is to apply a certain pressure on the surface of the workpiece (sample) through the tool, s...

AI Technical Summary

Problems solved by technology

[0011] Aiming at the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a three-ball cutting tool and a method of use for processing the surface layer of metal materials to improve material performance, and to solve the problem of the single-ball rolling method and the single-wheel rolling method. The problem of deforming shaft-like metal specimens while allowing the formation of nanocrystalline structures on the specimen surface

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