Welding-free tooth one-time forming method for combination teeth of idle wheel with teeth

A forming method and a tooth-combining technology are applied in the direction of wheels, vehicle parts, metal processing equipment, etc., which can solve the problems of low mechanical properties of parts, high manufacturing costs, and low processing efficiency, so as to improve the mechanical properties of products, reduce processing procedures, The effect of improving processing efficiency

Active Publication Date: 2018-10-19
HANGZHOU ADVANCE FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a one-time forming method of a toothed idler gear combined with a welding-free tooth part, which mainly solves the problem that the idler gear in the prior art is composed of a common gear and a combined ring gear by welding, and the two parts are welded into a unit Parts, this process has low processing efficiency, cumbersome logistics, high manufacturing costs, low mechanical properties of parts and other technical problems

Method used

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  • Welding-free tooth one-time forming method for combination teeth of idle wheel with teeth
  • Welding-free tooth one-time forming method for combination teeth of idle wheel with teeth
  • Welding-free tooth one-time forming method for combination teeth of idle wheel with teeth

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Embodiment

[0026] Embodiment: The one-time forming method of the toothed idler combined with the tooth without welding, the steps are as follows:

[0027] a. Select the raw material bar, grind the surface of the bar, and cut it into a length that meets the requirements after flaw detection for blanking;

[0028] b. Heating the rod to 850°C in the heating device with intermediate frequency, such as figure 1 , the heating device includes a heating channel 1, the bottom of the heating channel is provided with a heating conveyor chain 2, the upper part of the heating channel is connected with a number of rotating shafts 3, and the rotating shafts are connected with a number of electric heating tubes 4 arranged vertically, and the outside of the electric heating tube is provided with The casing 5 has a through hole 6 on the casing, the first bevel gear 7 is connected to the rotating shaft 3, the first bevel gear is meshed with the second bevel gear 8, and all the second bevel gears are connec...

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Abstract

The invention relates to an idle wheel forming method, in particular to a welding-free tooth one-time forming method for combination teeth of an idle wheel with teeth. The method aims to solve the problems that idle wheels in the prior art are formed by welding common gears and combination gear rings, two parts are welded into a part unit, and consequently the process is low in machining efficiency, complex in logistics, high in manufacturing cost, low in part mechanical property and the like. The method includes the steps that a raw bar is selected, the surface of the bar is grinded, and thebar is sheared into the required length after flaw detection and then is fed; the bar is subjected to medium-frequency heating in a heating device, and then the bar is punched on a pre-forging punch,so that the shape of an idle wheel and reverse bevel teeth are punched in advance; an obtained product is placed into a hot die forging device to be subjected to fine forging, so that a fine idle wheel with teeth is obtained and then subjected to trimming and piercing; and after cooling, the idle wheel is placed into a cold-extrusion die, the tooth shape is cold-extruded on a hydraulic machine, and finally a finished idle wheel with teeth is obtained.

Description

technical field [0001] The invention relates to a forming method of an idler gear, in particular to a one-time forming method of a toothed idler gear combined with a welding-free tooth portion. Background technique [0002] As a necessary speed change device for a car, the transmission can generate different gear ratios between the engine and the wheels during the running of the car, and the engine can work at its best power performance state by shifting gears. There are multiple sets of gears in the transmission housing to transmit different speed ratios, but when the car needs to go backwards, only changing the speed ratio can not achieve the purpose of the car going backwards, so there is also a reverse gear idler in the transmission housing, the reverse gear idler The wheel is the transmission gear in the middle of two transmission gears that are not in contact with each other. It meshes with these two gears at the same time, and is used to change the rotation direction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/30B21J5/02B23P15/14
Inventor 戚伟栋李峰王佳张梦楠施建平石慧王玲珑
Owner HANGZHOU ADVANCE FORGING
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