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Pushing gear tooth machining technological method

A processing technology, gear teeth technology, applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., to achieve uniform hardness, increased use cost, and improved service life.

Inactive Publication Date: 2018-04-06
BEIJING DASHENG GEER METALLURGICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a processing method for pushing gear teeth, which solves the defects and deficiencies of the existing processing technology for pushing gears, improves the processing accuracy, reduces the use cost and maintenance cost, and improves the appearance quality of the product

Method used

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  • Pushing gear tooth machining technological method
  • Pushing gear tooth machining technological method
  • Pushing gear tooth machining technological method

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Experimental program
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Embodiment

[0023] see Figure 5 , 6 as shown,

[0024] A processing method for pushing gear teeth of the present invention comprises the following steps:

[0025] Step 1, the machining steps of pushing the gear teeth: install the workpiece to be processed, align it, and prepare the tool; use proe programming software to compile the NC program, and choose a NC gantry with a NC dividing head or a NC dividing disc Milling machine or CNC boring and milling machine and ball type boring and milling cutter; to cut and process the tooth groove, divide the tooth, and cut the next tooth, so that all the teeth are processed in a cycle;

[0026] Step 2, heat treatment and quenching step: First, rotate the push gear processed in step 1 at a speed of 20-60rpm, immerse it in the salt bath furnace salt solution, and heat it in a salt bath. The heating temperature is 1100°C-1300°C, and the immersion depth exceeds The full tooth height is 3-15mm; when the immersed part reaches 870°C, take it out; put t...

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Abstract

The invention provides a pushing gear tooth machining technological method. The method comprises the machining step, wherein proe programming software is used for compiling a numerical control program, a numerical control planer type milling machine or a numerical control boring and milling machine which comprises a numerical control dividing head or a numerical control indexing disc and a spherical boring and milling cutter are used, and all gear teeth are completed through cutting machining; and the heat treatment quenching step, wherein a machined pushing gear is rotated at the speed of 20rpm to 60 rpm and immersed into a salt solution of a salt-bath furnace to be salt-bathed and heated, then the heated pushing gear is put into high-speed quenching oil or a water-based quenching liquidto be quenched and then put into a tempering furnace, heating and heat preservation are conducted slowly, and the pushing gear is air-cooled to normal temperature after being cooled to 100 DEG C along with the furnace. According to the pushing gear tooth machining technological method, the pushing gear is high in gear profile and gear direction precision, tooth socket transition fillets exist, gibbosities at the two ends of a tooth socket are not machined, and circular pitches are uniform; and the machining accuracy and using accuracy of the gear are improved, the tooth surfaces, tooth rootsand the gibbosities are completely quenched by means of the heat treatment technology, and the hardness is uniform.

Description

technical field [0001] The invention relates to a processing method for pushing gear teeth, and belongs to the technical field of processing the pushing gear teeth of mining excavators. Background technique [0002] In the prior art, the processing of the pushing gear teeth is generally carried out on an ordinary boring and milling machine, and the tooth portion is processed with a forming knife. The tooth shape has low precision of tooth direction, poor tooth surface roughness, no tooth groove transition fillet, and the two ends of the tooth groove are processed to be convex, the circumferential pitch is uneven, and it can only be processed before heat treatment. As a result, the transmission is not stable, the wear is fast, the teeth are easy to break, the service life is low, the use cost and maintenance cost are increased, and the appearance quality is poor. [0003] In addition, the induction hardening of the prior art uses a forming induction coil to harden most of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14C21D9/32
CPCB23P15/14C21D9/32
Inventor 王庆龄
Owner BEIJING DASHENG GEER METALLURGICAL EQUIP CO LTD
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