One-step forming hydraulic press

Abstract

The invention discloses a one-step forming hydraulic press. The one-step forming hydraulic press comprises a fixed worktable, a movable worktable driven by a main oil cylinder, an upper die component mounted on the movable worktable, a mould core, a first material return cylinder, a second material return cylinder and a third material return cylinder, wherein the upper end part of the piston rod of the first material return cylinder is connected with a first push rod, and a first material return ring corresponding to a first upper die is arranged at the top end of the first push rod; the upper end part of the second material return cylinder is connected with a second push rod, and a second material return ring corresponding to a second upper die is arranged at the top end of the second push top; the upper end part of the piston rod of the third material return cylinder is connected with a third push rod; a third material return ring corresponding to a third upper die is arranged at the top end of the third push rod; and the first material return ring, the second material return ring and the third material return ring are sequentially arranged in the height direction. According to the invention, workpieces with longer sizes can be stretched in one attempt on one machine, so that the equipment cost is lowered and the production efficiency is improved; and the one-step forming hydraulic press has a simple structure and saves space and manual cost.

Description

technical field [0001] The invention relates to a one-time forming hydraulic press, especially for processing a hydraulic press with a relatively large axial dimension. Background technique [0002] During the processing of metal parts, it is usually necessary to use stretching hydraulic machines for stretching, flanging and other processes. In its specific work, it mainly uses the thrust of the hydraulic cylinder to apply to the metal material. After the stretching or flanging action is completed, the hydraulic pressure The oil cylinder returns to its original position, ready for the next action. [0003] In the patent document with the publication number CN101318293, a stretching hydraulic machine is disclosed. For super-long products (when the axial dimension angle is large), the stretching hydraulic machine needs multiple such stretching hydraulic machines to pass from small to large. Only through multiple stretching actions can it be processed and formed, which require...

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Problems solved by technology

[0003] In the patent document with the publication number CN101318293, a stretching hydraulic machine is disclosed. For super-long products (when the axial dimension angle is large), the stretching hydraulic machine needs multiple such stretching hydraulic machines to pass from small to large. Only through multiple stretching actions can it be processed and formed, which requires the manufacturer to purchase multiple machines, which occupies a large area of ​​the site, is not conducive to cost control, the process is more complicated, and the production efficiency is low. Moreover, the product is in the stretching process. In the middle, after repeated friction, it seriously affects the surface quality of the product

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