Differential shell and forging process and forging equipment thereof

A differential gear and equipment technology, applied in the field of driven spiral bevel gear combined forgings, can solve the problems of limited number of workpieces, low efficiency, high labor intensity, etc., and achieve the effects of improving heat treatment efficiency, meeting matching requirements, and saving weight

Inactive Publication Date: 2015-12-16
SHANDONG WENLING PRECISION FORGING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] 1. The efficiency is low, the number of workpieces processed each time is limited, and continuous production cannot be formed
[0013] 2. The process is complex. After the existing furnace is heated up, it is necessary to cont

Method used

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  • Differential shell and forging process and forging equipment thereof
  • Differential shell and forging process and forging equipment thereof
  • Differential shell and forging process and forging equipment thereof

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Embodiment Construction

[0038] The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:

[0039] figure 1 As shown, a driven bevel gear combined forging includes a driven spiral bevel gear 2 and a differential case 1 on one side of the gear.

[0040] The combined passive bevel gear forging of this embodiment is forged through a die, so the ring gear 2 (gear) and the housing body 1 of this embodiment are an integrated forged structure instead of the original bolt-fastened structure.

[0041]A pre-forging heat treatment process for driven spiral bevel gear combined forgings. Before the forging of the workpiece, the blank is heated at medium frequency for 2 minutes to 1100±50°C, and then 2 tons of air hammer is used for upsetting, and 4000 tons of screw pressure is used. machine for closed die forging, and then use a 300-ton punching machine to punch holes.

[0042] The commonly used pre-heat treatment process for forging blanks of automotive...

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Abstract

The invention discloses a novel pit-type vacuum heat treatment furnace and a heat treatment process thereof. The vacuum heat treatment furnace comprises a furnace body 1, a cover body 2 and a motor 3 which is arranged on the top of the cover body 2 and provided with stirring wings. A groove is formed in the top end of the furnace body 1 along the periphery of the furnace body 1. A boss capable of being buckled in the groove is formed in the peripheral direction of the cover body 2. When sealing is conducted, the boss is buckled in the groove, the groove is filled with fine sand at the joint of the groove and the boss, and thus the joint of the groove and the boss is covered. Due to the fact that the joint of the groove and the boss is covered with the fine sand, no sealing ring is used any more, and the use cost of the heat treatment furnace is greatly lowered; meanwhile, the situation that a sealed position is not sealed completely due to deformation of a sealing ring is avoided, and the vacuum state is maintained all the time in the heat treatment procedure. By the adoption of the process method, the heat treatment process level and the metallicity of parts are improved.

Description

technical field [0001] The invention relates to a combined forging of a driven spiral bevel gear, in particular a driven spiral bevel gear and a differential case located on one side of the gear are of an integrated forging structure. Background technique [0002] Spiral bevel gears are key components of automotive drive axle transmission systems. In the process of automobile transportation, it is responsible for reducing speed, increasing torque, and changing the direction of torque transmission. The working conditions of the spiral bevel gear of the drive axle main reducer are quite harsh. Compared with other gears in the transmission system, it has the characteristics of large load, long action time, many changes, and bearing impact. [0003] The spiral bevel gear of the final drive has two functions, the first is to change the direction of power transmission, and the second is to provide a common transmission ratio for each gear as an extension of the transmission. The...

Claims

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Application Information

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IPC IPC(8): F16H55/17B23P15/14
CPCB23P15/14C21D9/32F16H55/17
Inventor 葛希佩贾雨纪宝华
Owner SHANDONG WENLING PRECISION FORGING TECH
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