Technique for preparing machine holding carbide alloy rack type gear shaper cutter

Abstract

A manufacturing process of machine-clamped hard alloy comb-tooth cutter. The blade is YT798, and the positioning threading hole is pre-punched by the electric spark piercer, and then the thickness and width of the blade are ground by a grinder to meet the design requirements. The required thickness size and roughness, then use slow wire cutting to cut the shape of the blade and the positioning hole for assembly, and evenly coat the blade with titanium aluminum nitride, use a special fixture to fine-mill the groove shape of the blade, and finally in the coordinate boring Bore assembly pilot holes. The cutter body is made of 42CrMo, and the shape of the cutter body, including the clamping size and rake angle, is adjusted and tempered and nitrided to HB265-305 with a special fixture, and the clamping position of the cutter body is roughly and finely ground with a special fixture. Finally, use a special mold to cut the tooth shape of the cutter body on the wire cutting machine, and cut the tooth shape and back angle in one clamping. It is assembled at one time through the fine repair and grinding of the blade groove by the model fitter. It is used for processing large modulus and high hardness gears.

Description

technical field [0001] The invention belongs to the technical field of cutters, in particular to a manufacturing process of a machine-clamped hard alloy comb-toothed cutter. Background technique [0002] At present, the production of general comb-tooth cutter is to adopt high-speed steel material as cutting material, after forging, machining, become the cutting tool for processing gear tooth profile. Compared with high-speed steel, cemented carbide has excellent red hardness and wear resistance, and its cutting performance and wear resistance are better than high-speed steel tools. [0003] The high-speed steel comb cutter can only process materials with heat treatment hardness less than HB320, and cannot process large modulus and high hardness workpieces. Contents of the invention [0004] In order to solve the above problems, the invention provides a manufacturing process of a machine-clamped cemented carbide comb-toothed cutter. The machine-clamped carbide comb-toothed...

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Problems solved by technology

[0004] In order to solve the above problems, the invention provides a manufacturing process of a machine-clamped cemented carbide comb-toothed cutter. The machine-clamped carbide comb-toothed cutter made according to the process can solve the problem of large modulus and high hardness (heat treatment hardness is greater than HRC55) tooth surface gear comb tooth processing problem, overcome the defect that high-speed steel tools cannot process hard tooth surface gear, and improve the machining accuracy of the gear

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