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A hydraulic press for repeated forming

A technology of blank holder and beam, used in presses, forging/pressing/hammering machines, forming tools, etc., can solve the problems of inability to achieve the continuity of repeated forming processes, low production efficiency, etc., to improve product quality and The effect of production efficiency

Active Publication Date: 2018-01-23
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Repeated forming process is a new process developed in recent years to improve the performance of materials and products. Traditional hydraulic presses with single-action or double-acting structures cannot achieve repeated forming tests or production due to the one-way motion loading mode. The continuity of the forming process, and the production efficiency is very low

Method used

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  • A hydraulic press for repeated forming
  • A hydraulic press for repeated forming
  • A hydraulic press for repeated forming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Refer to attached Figure 4 , for a rod 15 with a diameter D of 60 mm and a height h of 100 mm, the process of repeated extrusion-upsetting-extrusion is realized through the extrusion die 14 installed on the repeated forming hydraulic press. The outer slider of the upper movable beam moves downward under the action of the edge cylinder to compress the extrusion die, and the upper pressure head 13 moves downward under the drive of the upper main working cylinder and the inner slider of the upper movable beam to realize forward extrusion. Then the upper main working cylinder is decompressed, the lower main working cylinder is pressurized, and the lower pressure head 16 moves upward under the action of the lower main working cylinder, so as to realize upsetting and reverse extrusion of the bar extruded in the forward direction, so Circulation can realize multi-pass repeated extrusion on the bar.

Embodiment 2

[0019] See attached Figure 5 , for a plate with a diameter D of 200 mm and a thickness t of 1 mm, the repeated deep drawing can be realized through the deep drawing die installed on the repeated forming hydraulic press. The outer slider of the upper movable beam moves downward under the action of the blank holder cylinder, and exerts blank holder force on the plate 19 placed between the upper forming die 18 and the lower forming die 20, and the upper forming punch 17 is working on the upper main body. Driven by the inner slider of the cylinder and the upper movable beam, it moves downward to realize forward drawing, then the upper main working cylinder releases pressure, the upper forming punch retreats, and the lower forming punch 21 moves upward under the action of the lower main working cylinder. Movement to achieve reverse deep drawing, and such a cycle can realize repeated deep drawing of the plate.

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Abstract

The invention discloses a repeated forming hydraulic press which mainly comprises an upper main working cylinder, an upper cross beam, an upper movable cross beam outer sliding block, an upper movable cross beam inner sliding block, vertical columns, a middle fixed cross beam, a lower movable cross beam, a lower cross beam, a lower main working cylinder, edge pressing cylinders, foundation bolts, locking nuts, an upper pressing head, a lower pressing head, an upper forming male die, an upper forming female die, a lower forming female die and a lower forming male die. The repeated forming hydraulic press can realize a machining process for one-time positioning of a machined product and a die and repeated forming for multiple times; meanwhile, the quality and the production efficiency of a product during production can be greatly improved.

Description

technical field [0001] The invention belongs to the field of metal plastic forming equipment manufacturing. Background technique [0002] A hydraulic press is a device that uses hydraulic transmission technology for pressure processing. Compared with mechanical presses, it has the advantages of stepless adjustment of pressure and speed in a wide range, full power output and required pressure at any position, flexible structure and layout, and coordinated actions of various actuators. At the same time, the hydraulic components are highly generalized and standardized, and the design and manufacture are relatively simple. Therefore, hydraulic presses have been increasingly widely used in various sectors of the national economy. [0003] At present, most of the small and medium-sized hydraulic presses adopt single-acting or double-acting structures, which can realize the deep drawing of plates or the forging and extrusion of bars. Repeated forming process is a new process dev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/24B21D37/10B21C23/03B21C25/02B21J5/08B21J13/02B30B15/04B23P23/02
CPCB21C23/03B21C25/02B21D22/24B21D37/10B21J5/002B21J5/08B21J13/02B30B15/04
Inventor 骆俊廷郝增亮骆姝伊张春祥
Owner YANSHAN UNIV