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Hard alloy precision working rack type cutter and processing technique

A cemented carbide blade, cemented carbide technology, applied in metal processing equipment, gear teeth, manufacturing tools, etc., can solve the problem of inability to process hard tooth surfaces, and achieve the effect of simple processing, avoidance of errors, and easy operation.

Inactive Publication Date: 2010-10-06
CITIC HEAVY INDUSTRIES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the difficult problem of comb tooth processing of large modulus and medium hard tooth surface gears, and overcome the defect that high-speed steel tools cannot process hard tooth surfaces, the purpose of the present invention is to provide a hard alloy finishing comb tooth cutter and a processing method , so that the tool can improve the machining accuracy of the gear, can cut heat-treated materials with a hardness greater than HB320, and is wear-resistant, which can reduce the number of regrinding of the tool and greatly improve the cutting conditions

Method used

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  • Hard alloy precision working rack type cutter and processing technique
  • Hard alloy precision working rack type cutter and processing technique

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Embodiment Construction

[0011] The cutting tool of the hard alloy finishing comb-tooth knife uses YT798 hard alloy plate as the processing material of the cutting edge. The shape and tooth shape are formed; use coordinate boring to drill out the positioning hole of the positioning plate, and then install the positioning plate according to the process design requirements; preheat the knife body to 250 °C before welding, and keep it warm for 1 hour; use high-frequency welding technology to connect the blade and the knife Body welding, tempering immediately after welding; the front edge is cut out by the sharpening machine, and each positioning datum surface is super-precision flat ground, and the tooth shape processing program is compiled based on the normal tooth shape, and the special mold is installed and used for high-precision walking Wire cutting cuts each tooth shape and rear corner in one clamping.

[0012] Its specific process steps are as follows:

[0013] 1 Select the blade material: choose...

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Abstract

The present invention is one kind of hard alloy combing cutter for finish machining and its machining process. The hard alloy combing cutter has one cutting blade made of YT798 hard alloy plate and one cutter body of 40Cr steel. It is machined through semi finishing of cutting blade, milling the cutter body in a universal milling machine to form the front edge and tooth form and boring the locating hole for the blade in a high accuracy jig boring machine, assembling the blade locating board onto the cutter body while controlling the tooth pitch and tooth thickness of the cutting edge, high frequency welding the cutting blade to the cutter body and timely tempering, grinding the front edge of the cutting edge in a cutter grinding machine, and wire electrode cutting the tooth form in high precision wire electrode cutting equipment. The hard alloy combing cutter has high cutting hardness and high wear resistance, and may be applied for finish machining great modulus gear with medium hardness tooth surface.

Description

technical field [0001] The invention relates to the technical field of gear processing tools and materials, and relates to a hard alloy finishing comb cutter and a processing method. Background technique [0002] At present, existing comb-tooth cutters are made of integral high-speed steel materials, and the tooth profile is basically ground. Tooth profile accuracy is difficult or impossible to guarantee, especially the positioning dimension accuracy and tooth pitch accuracy are extremely difficult to process, and the phenomenon of excessive accuracy often occurs. The roughness of the trailing edge surface of the tooth shape is low, which cannot meet the design requirements. The labor intensity of the operator is high and the production efficiency is low. Moreover, this kind of high-speed steel comb-toothed cutter can only process materials with heat treatment hardness less than HB320 hardness. When processing large modulus, quenched and tempered workpieces with uneven har...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23F21/12B23P15/34
Inventor 申明付焦少青张邦栋靳桂芳付薇田瑾
Owner CITIC HEAVY INDUSTRIES CO LTD
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