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Manufacturing method for mine vehicle axle wheel reductor planetary gear

A technology for planetary gears and manufacturing methods, which is applied to components with teeth, gear lubrication/cooling, belts/chains/gears, etc., and can solve the problems of harsh working environments, complex force on drive axles, and planetary gear service life and reliability. It is difficult to meet the problems of the mine wheel reducer, etc., to achieve the effect of improving wear resistance and anti-gluing ability, improving strength and life, and good lubrication

Active Publication Date: 2015-04-29
WUXI WEIFU CHINA ITAL GEAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the ever-changing road environment encountered by the vehicle during driving, especially when the vehicle is driving on an uneven road surface, the additional dynamic load generated by the vibration of the vehicle and the longitudinal impact caused by the protrusion of the road surface to the vehicle cause the force of the drive axle to be very complicated. , the working environment is extremely harsh
The existing planetary gears are difficult to meet the requirements of mining wheel side reducers in terms of processing technology, service life and reliability

Method used

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  • Manufacturing method for mine vehicle axle wheel reductor planetary gear
  • Manufacturing method for mine vehicle axle wheel reductor planetary gear

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: A method for manufacturing a planetary gear of a mine vehicle car wheel reducer, comprising the following process steps:

[0031] (1) Forging: The ring gear 1 is obtained by forging the 20MnCr5 alloy material with a hardenability of H5 to ensure high-quality gear blanks. The forging is heated by an electric furnace, and the initial forging temperature and final forging temperature are strictly controlled;

[0032] (2) Rough turning: Carry out rough turning on the ring gear 1 on the lathe, and reserve 2mm machining allowance for the outer circle, end face of the ring gear 1 and the inner hole 2 of the planetary wheel;

[0033] (3) Preliminary heat treatment: normalize the ring gear 1 after rough turning at a high temperature of 940°C for 5.5 hours, and then temper at 620°C for 4.5 hours to obtain a refined grain structure;

[0034] (4) Finish turning: Carry out finish turning on the ring gear 1 on the lathe, on the hole wall of the inner hole 2 of the plane...

Embodiment 2

[0044] Embodiment 2: A method for manufacturing a planetary gear of a car wheel side reducer for a mining vehicle, comprising the following process steps:

[0045] (1) Forging: The ring gear 1 is obtained by forging the 20MnCr5 alloy material with a hardenability of H5 to ensure high-quality gear blanks. The forging is heated by an electric furnace, and the initial forging temperature and final forging temperature are strictly controlled;

[0046] (2) Rough turning: Carry out rough turning on the ring gear 1 on the lathe, and reserve 3mm machining allowance for the outer circle, end face of the ring gear 1 and the inner hole 2 of the planetary wheel;

[0047](3) Preliminary heat treatment: normalize the ring gear 1 after rough turning at 950°C for 5.5 hours at high temperature, and then temper at 630°C for 3.5 hours to obtain a refined grain structure;

[0048] (4) Finish turning: Carry out finish turning on the ring gear 1 on the lathe, on the hole wall of the inner hole 2 of...

Embodiment 3

[0058] Embodiment 3: A method for manufacturing a planetary gear of a car wheel side reducer for a mining vehicle, comprising the following process steps:

[0059] (1) Forging: The ring gear 1 is obtained by forging the 20MnCr5 alloy material with a hardenability of H5 to ensure high-quality gear blanks. The forging is heated by an electric furnace, and the initial forging temperature and final forging temperature are strictly controlled;

[0060] (2) Rough turning: Carry out rough turning on the ring gear 1 on the lathe, and reserve 2.5mm machining allowance for the outer circle, end face of the ring gear 1 and the inner hole 2 of the planetary wheel;

[0061] (3) Preliminary heat treatment: normalize the ring gear 1 after rough turning at 945°C for 5 hours at high temperature, and then temper at 625°C for 4 hours to obtain a refined grain structure;

[0062] (4) Finish turning: Carry out finish turning on the ring gear 1 on the lathe, on the hole wall of the inner hole 2 of ...

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Abstract

The invention relates to a mine vehicle axle wheel reductor planetary gear and a manufacture method thereof. The manufacture method comprises the following processing steps of: (1) forging to obtain a gear ring; (2) roughly turning; (3) carrying out preheat treatment; (4) finely turning; (5) carrying out ultrasonic flaw detection; (6) hobbing; (7) boring a plurality of oilholes in the wall of a planet wheel inner hole in the middle of the gear ring along the radial direction of the planet wheel inner hole; (8) carburizing for heat treatment; (9) performing plain grinding on two end faces of the gear ring to the required size and then grinding the planet wheel inner hole of the gear ring to the required size; (10) grinding the gear; (11) carrying out magnetic powder inspection; (12) strengthening shot peening at gear root; and (13) carrying out manganese phosphating. The planetary gear produced by adopting the manufacture method, disclosed by the invention has the advantages that the contact fatigue strength is better, the reliability is greatly enhanced and the service life is greatly prolonged; and according to the manufacture method provided by the invention, shot peening strengthening is adopted in processing the gear root, and the stress state of the gear root is changed, so that the gear root bending strength of the planetary gear is remarkably enhanced, the strength of the planetary gear is enhanced and the service life of the planetary gear is prolonged.

Description

technical field [0001] The invention relates to a planetary gear, in particular to a planetary gear of a mine vehicle car wheel side reducer and a manufacturing method thereof. Background technique [0002] The reliability of the planetary gear of the mine car wheel side reducer is directly related to the reliability of the whole vehicle. Due to the ever-changing road environment encountered by the vehicle during driving, especially when the vehicle is driving on an uneven road surface, the additional dynamic load generated by the vibration of the vehicle and the longitudinal impact caused by the protrusion of the road surface to the vehicle cause the force of the drive axle to be very complicated. , the working environment is extremely harsh. It is difficult for the existing planetary gears to meet the requirements of the mine-used wheel-side reducer in terms of processing technology, service life and reliability. Contents of the invention [0003] The purpose of the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/17F16H57/04B23P15/14
Inventor 高友生
Owner WUXI WEIFU CHINA ITAL GEAR
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