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Hydraulic swage press

A press and cold extrusion technology, applied in the direction of swaging press, upsetting press, forging press, etc., can solve the problem of high cost

Inactive Publication Date: 2005-07-06
BETASWAGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some disadvantages of this tapered design include: fit "depth" and stress development in the structure due to the mismatch between the frusto-conical surface of the piston and the curvature of the partial frusto-conical surface on the working shoe
Many of these machines cost more to mold than the cold extrusion press itself

Method used

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  • Hydraulic swage press
  • Hydraulic swage press
  • Hydraulic swage press

Examples

Experimental program
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Effect test

Embodiment Construction

[0025] first reference figure 1 with Figure 1a , which shows a conventional type of conical cold extrusion press 10 using a working piston 11 driven in a forward direction 12 by pressurized liquid entering a chamber 13 through a hole 14 . The forward end face of the piston 11 is recessed to form a frustoconical surface 15 which cooperatingly engages a partial frustoconical surface 17 on a shoe 16, each of said shoe 16 With an inwardly facing pattern 18. The die shoe 16 is prevented from moving forward by the end wall 19 of the cold extruder assembly, at the end wall 19, when the piston 11 moves in the forward direction 12, the shoe 16 moves as shown by the arrow 20 Inward movement. Such as Figure 1a As shown, the bearing surface contact area between the mold shoe 16 and the frustoconical surface 15 of the piston 11 is almost a line contact due to its method of manufacture. Consequently, a reasonably long bearing area is required, which in turn leads to the requirement t...

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PUM

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Abstract

The present specification discloses a swaging press including a piston member co-operable with a plurality of die shoes to drive the die shoes inwardly upon axial movement of the piston member during a swaging operation, the piston member having a frusto-conical recessed region divided into a plurality of circumferentially disposed bearing surface zone of a defined axial length, each of the bearing surface zones having an inner axial end with a numerical radius of curvature less than or equal to the radius of curvature of a circular line forming the lateral edges of each of the bearing surface zones at the inner axial end whereby at least 50% of the outer bearing surface of each said die shoe remains in bearing engagement with the adjacent said bearing surface zone over the axial movement of the piston member during a swaging operation.

Description

technical field [0001] The invention relates to an improved hydraulic cold extrusion press. Background technique [0002] A hydraulic cold extrusion press is a machine with a set of matching dies called "die" that can reduce the diameter of a product while it is cold. The product is usually cylindrical in steel, but other cases are possible. Especially in the hydraulic connector sector the aforementioned "product" called a ferrule is used to connect the two ends of the hose. Of course, ferrule-type connectors can also be used in other industries, but as the requirements for the hydraulic section increase, such as higher pressure and longer durability, the ferrule used in this industry is required to be able to do More work, therefore, requires the continuous development of cold extrusion presses with higher performance. [0003] One traditional form of cold extrusion press design can often be described as the "cone" type. Cold extrusion presses of this shape utilize a hy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J9/00B21J9/02B21J13/02B21D39/04B21J5/06B21J9/06
CPCB21D39/046B21J9/06B21J13/025Y10T29/5367
Inventor 弗兰特·范·艾森
Owner BETASWAGE
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