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Method and device for hot-rolling forming of cylindrical gear with big modulus and large diameter

A cylindrical gear, large module technology, applied in the direction of gears, other household appliances, household appliances, etc., can solve the problems of limited forming capacity, difficult tooth filling, low mold life, etc., to reduce equipment requirements, fast heating speed, The effect of improving production efficiency

Inactive Publication Date: 2015-12-30
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has high material utilization rate, higher production efficiency and manufacturing quality than cutting processing, but its forming ability is limited, deformation resistance is large, mold life is low, tooth profile filling is difficult, and it is suitable for forming small and medium modules and small diameter gears

Method used

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  • Method and device for hot-rolling forming of cylindrical gear with big modulus and large diameter
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  • Method and device for hot-rolling forming of cylindrical gear with big modulus and large diameter

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Embodiment Construction

[0030] In order to have a deeper understanding of the technical features, objectives and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0031] The hot rolling forming method of large modulus cylindrical spur gear of the present invention includes the following steps:

[0032] S1, obtain a ring-shaped blank 3, such as figure 1 , figure 2 As shown, the inner diameter d of the blank 3 0 Equal to the outer diameter of the blank drive shaft 2 and the height B of the blank 3 0 Equal to the height B of the tooth mold 7, the outer diameter of the blank 3 A is the end face area of ​​the cylindrical gear to be prepared. In a preferred embodiment of the present invention, the inner hole diameter d of the cylindrical gear 0 =100mm, index circle diameter d=275mm, modulus m=5mm, tooth width B=30mm, end surface area 51254.4mm 2 , The diameter of the inner hole of the ring blank 3 ...

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Abstract

The invention provides a method and a device for hot-rolling forming of a cylindrical gear with the big modulus and the large diameter. The method comprises the following steps: S1, a blank is obtained; S2, the blank is arranged on a blank driving shaft and clamped by a clamping device; S3, the blank is heated by an induction heating device; S4, left and right baffle plates are mounted to two ends of a mold; S5, a driving device drives the mold and the blank to rotate in opposite directions at a certain speed ratio, and meanwhile, the mold is fed radially through a linear driving device; S6, when the center distance between the mold and the blank reaches a predetermined value, radial feeding of the mold is stopped, the mold is rotated continuously for two circles, and then the mold and the blank are rotated reversely for two circles simultaneously and stopped; S7, the clamping device loosens, and the blank is discharged. The device comprises a rack, the blank driving shaft, a mold driving shaft and an electromagnetic induction coil. According to the method and the device, the cylindrical gear is integrally formed by one step through continuous local plastic deformation, the production efficiency is improved, the materials are saved, and the product performance can be enhanced.

Description

Technical field [0001] The invention belongs to the technical field of metal plastic forming technology and equipment, and in particular relates to a method and device for hot rolling forming a large-modulus large-diameter cylindrical gear. Background technique [0002] Cylindrical gears are one of the key basic parts in modern industrial production and are widely used in various industrial fields. [0003] There are currently two main manufacturing methods for cylindrical gears. One is cutting. After long-term application and development, this method has become mature and the production quality is stable, but the material utilization rate is low, the efficiency is low, and the cost is high, especially when it takes a long time to manufacture gears with large diameters and large modules. The second is forging to form. This method has high material utilization, production efficiency and manufacturing quality higher than cutting processing, but its forming ability is limited, defo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21H5/02
CPCB21H5/02
Inventor 王宝雨付晓斌校文超朱传宝武鹏飞纪宏超
Owner UNIV OF SCI & TECH BEIJING
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