Method of hardening tool edge through soldering wire and tool edge fixture

Abstract

The invention discloses a method of hardening a tool edge through a soldering wire and a tool edge fixture. The tool edge hardening treatment method comprises the steps of assembling a tool to be machined into a fixture base in the tool machining process to form an enclosed groove structure between the tool edge of the tool to be machined and the fixture base; and heating and melting the solderingwire into fluid, driving the fluid into the groove structure, and curing the fluid to complete one-time filling to form a hardening layer at the tool edge. According to the hardening treatment methodprovided by the invention, horizontal machining is adopted, and there is no need to consider to change the Z-axis height in path programming; after a blade is fixed to a die, turnover remachining isnot needed, and machining of the single tool can be completed just through one-time machining; and just by controlling operating parameters such as the current magnitude, the moving speed, the wire feed speed and the relatively less shielding gas amount, and the quality is controlled easily.

Description

technical field [0001] The invention belongs to the technical field of cutting tool manufacturing, and in particular relates to a method for hardening a knife edge with a welding wire and a knife edge jig, in particular to a knife edge hardening treatment method and a jig used to realize the above method. Background technique [0002] Traditional tool materials generally choose stainless steel, and in order to ensure the final performance of the tool, after the tool body is formed by stamping, its strength, hardness and wear resistance are improved through heat treatment technology; however, ordinary martensitic stainless steel is used instead of The hardness of the finished cutting tool can generally only reach about 600HV after heat treatment and strengthening, and this hardness value can no longer meet people's requirements for high hardness and high wear resistance that high-end cutting tools should have. [0003] At present, the way many domestic enterprises solve the a...

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Problems solved by technology

[0002] Traditional tool materials generally choose stainless steel, and in order to ensure the final performance of the tool, after the tool body is formed by stamping, its strength, hardness and wear resistance are improved through heat treatment technology; however, ordinary martensitic stainless steel is used instead of The hardness of the finished cutting tool can only reach about 600HV after heat treatment and strengthening, and this hardness value can no longer meet people's requirements for high hardness and high wear resistance that high-end cutting tools should have.

[0003] At present, the way many domestic enterprises solve the above problems is to directly select foreign high-quality steel as the tool material, such as using Japanese laminated steel to manufacture high-performance knives, so as to ensure the performance of the final knives, especially the hardness of the blade. However, this will greatly increase the purchase cost of the tool material, resulting in an increase in the manufacturing cost of the tool, which in turn increases the price of the tool

[0004] Aiming at the above-mentioned high-cost defects caused by the use of high-quality steel to produce integral knives, technicians have developed a blade treatment method that uses welding wire to harden the blade edge to increase the hardness of the blade while reducing the overall manufacturing cost of the blade. Nowadays, Most of the edge hardening technologies in China are laser cladding technology, the cost of using cladding powder is expensive and there are management environment requirements; moreover, the above edge hardening technologies all adopt vertical processing in the processing process, and Z should be considered in the preparation of processing paths The transformation of the shaft height; a single knife needs to be clad back and forth multiple times to achieve the processing of a single knife; it is necessary to control multiple working parameters such as laser power, laser focal length, powder output, protective gas volume, moving speed, and cladding techniques; for example:

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