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Roller type wedge cross-rolling process of shaping eccentric stepped shaft

A technology of cross wedge rolling and stepped shaft, applied in the direction of roll, metal rolling, metal rolling, etc., can solve the problem of unable to form eccentric shaft parts, etc., to improve material utilization, continuous fiber structure, continuous fiber flow line Effect

Inactive Publication Date: 2008-08-06
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional cross wedge rolling process can only produce various concentric rotary shaft parts, and cannot form eccentric shaft parts.

Method used

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  • Roller type wedge cross-rolling process of shaping eccentric stepped shaft
  • Roller type wedge cross-rolling process of shaping eccentric stepped shaft
  • Roller type wedge cross-rolling process of shaping eccentric stepped shaft

Examples

Experimental program
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Effect test

Embodiment Construction

[0039] Figure 10 Shown is an example of roll cross wedge rolling with an eccentric shaft ( Figure 9 Shown) The expansion diagram of the mold pass and the forming process of the eccentric shaft. The billet is placed between two rollers, and the movement of the rollers drives the billet to rotate. Under the action of the mold, the billet is radially compressed and axially extended, and the billet is gradually formed into a stepped shaft. The middle diameter of the forming eccentric shaft of the I-stage die is Φ30mm; the eccentric diameter of the II-stage die on the forming eccentric shaft is Φ33mm; forming at this stage is different from the traditional cross-wedge rolling process, which is the key of the present invention. shaft stage, its longitudinal profile soil such as Figure 10 As shown in (V-V), the wedge shape of the mold corresponding to the eccentric shaft of this section is as follows Figure 4 shown. The diameter of the outermost end of the forming eccentric s...

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Abstract

The roller type wedge rolling process of shaping eccentric stepped shaft in plastic metal forming technology includes heating rod material, and rolling in a wedge rolling mill. During wedge rolling process, 2 or 3 rollers with wedged mold rotate in the same direction and the heated metal rod is radially compressed and axially extended and deformed under the action of the molds with wedged side wall so as to form the eccentric stepped shaft gradually. The wedged mold work surface for forming the eccentric shaft section consists of wedge slant and curved top. The present invention has the advantages of high production efficiency, high material utilization rate, low production cost, high size precision and high product quality, and realize the precise formation of eccentric stepped shaft.

Description

Technical field: [0001] The invention belongs to the technical field of metal plastic forming, and particularly provides a rolling cross wedge rolling forming method of an eccentric stepped shaft. technical background: [0002] Cross-wedge rolling is a new forming process for shaft parts. Its working principle is: two rolls with wedge-shaped dies rotate in the same direction, driving the circular rolling piece to rotate in the opposite direction, and the rolling piece is under the action of the wedge-shaped pass. , Rolling and forming various stepped shafts. Its main deformation is radial compression and axial extension. This technology is mainly used for the production of large-volume shaft parts, including: shaft parts on automobiles, tractors, motorcycles, internal combustion engines, hardware tools, construction machinery, power fittings, etc. This technology has the characteristics of high efficiency, material saving and low consumption, and is an advanced production ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21H1/22B21B1/08B21B27/02
Inventor 王宝雨胡正寰张康生张巍
Owner UNIV OF SCI & TECH BEIJING
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