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Method for machining inner gear ring

A processing method and technology of an internal gear ring, applied in the field of mechanical processing, can solve problems such as long production process, and achieve the effects of simple processing process, high surface hardness and simple processing process

Active Publication Date: 2013-09-04
宁波东液传动科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This processing technology has a long production process, and the hardness of the inner ring gear after normalizing is only 160HBW

Method used

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  • Method for machining inner gear ring
  • Method for machining inner gear ring
  • Method for machining inner gear ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Forging and forming: choose commercially available ordinary steel, reserve margin according to the requirements of the drawings, and forge and form.

[0031] Rough machining: remove a large amount of allowance, and preliminarily shape the holes and end faces.

[0032] Quenching and tempering: After the rough machining of the ring gear is normalized at 900°C, it is tempered at 850°C.

[0033] Finishing: After quenching and tempering, the inner ring gear is finished and then sent to the machining center for drilling and tapping.

[0034] Two-step gear shaping: After the ring gear is rough gear shaped, it is tempered and shaped at 250°C for 3 hours, and after tempering, it is finely gear shaped.

[0035] Nitriding treatment: heat up the inner ring gear after gear shaping to the nitriding treatment temperature of 520°C in a saturated atmosphere filled with nitrogen, keep it warm for 48 hours, and then lower the temperature. The nitriding cycle is 5 days. The surface harde...

Embodiment 2

[0038] Forging and forming: choose commercially available ordinary steel, reserve margin according to the requirements of the drawings, and forge and form.

[0039] Rough machining: remove a large amount of allowance, and preliminarily shape the holes and end faces.

[0040] Quenching and tempering: After the rough machined ring gear is normalized at 920°C, it is tempered at 830°C.

[0041] Finishing: After quenching and tempering, the inner ring gear is finished and then sent to the machining center for drilling and tapping.

[0042] Two-step gear shaping: After the ring gear is rough gear shaped, it is tempered and shaped at 200°C for 3 hours, and after tempering, it is finely gear shaped.

[0043] Nitriding treatment: heat up the inner ring gear after gear shaping to 500°C for nitriding treatment in a saturated atmosphere filled with nitrogen, keep it warm for 45 hours, and then lower the temperature. The nitriding cycle is 5 days. The surface hardening speed of the inner...

Embodiment 3

[0046] Forging and forming: choose commercially available ordinary steel, reserve margin according to the requirements of the drawings, and forge and form.

[0047] Rough machining: remove a large amount of allowance, and preliminarily shape the holes and end faces.

[0048] Quenching and tempering: After the rough machining of the ring gear is normalized at 930°C, it is tempered at 870°C.

[0049] Finishing: After quenching and tempering, the inner ring gear is finished and then sent to the machining center for drilling and tapping.

[0050] Two-step gear shaping: rough gear shaping of the ring gear, tempering and shaping at 300°C for 4 hours, and fine gear shaping after tempering.

[0051] Nitriding treatment: heat up the inner ring gear after gear shaping to the nitriding treatment temperature of 550°C in a saturated atmosphere filled with nitrogen, keep it warm for 50 hours, and then lower the temperature. The nitriding cycle is 5 days. Among them, the surface hardening sp...

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Abstract

The invention relates to a method for machining an inner gear ring, and belongs to the technical field of machining. The method for machining the inner gear ring solves the problems that in the prior art, the production process of an inner gear ring machining technology is long, the rigidity of an inner gear ring after normalization cannot satisfy the requirement, and the condition of nitriding is high in temperature. The inner gear ring comprises a body 1, a locating hole 2, a mounting hole 3 and a lubricating hole 4. The method for machining the inner gear ring comprises the following steps of forging forming, rough machining, tempering, fine machining, two-step gear shaping, nitriding and turning machining. Machining processes of the inner ring are simple, the inner gear ring which is manufactured is high in rigidity, the rigidity can reach 650-759 HV, an effective rigid layer is deep, the depth can reach 0.40mm, precision is high and anti-abrasion performance is good.

Description

technical field [0001] The invention relates to a processing method of an inner ring gear, belonging to the technical field of mechanical processing. Background technique [0002] The ring gear is a key component used in the transmission system for transmission and transmission functions. It is composed of a flange half coupling with external teeth and an inner ring gear with the same number of teeth. It is mainly used to start the motor transmission system, and it has the function of transmission and transmission according to the meshing rotation of the metal teeth. The amount of internal gear used is very large, but the internal gear is usually formed by shaping, pushing, or pulling, which is difficult to process and low in material utilization. The general processing method of the inner ring gear has a long production process, the hardness of the inner ring gear is low, and the material consumption and product energy consumption are relatively large, resulting in high co...

Claims

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Application Information

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IPC IPC(8): B23P15/14
Inventor 陈国栋
Owner 宁波东液传动科技有限公司
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