Hydraulic fixture based on progressive forming machine tool and sheet forming and feeding method thereof

A technology of incremental forming and hydraulic fixtures, applied in the direction of feeding devices, manufacturing tools, metal processing equipment, etc., can solve the problem that the control of blank holder force cannot be realized, the blank holder force cannot be changed, and the surface pressure cannot be applied to the sheet material, etc. problems, to achieve the effect of realizing production automation, preventing rupture, and facilitating material replenishment

Active Publication Date: 2018-07-31
NANJING INST OF TECH
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  • Summary
  • Abstract
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Problems solved by technology

[0005] After searching the existing incremental forming technology and devices, it is found that the development of incremental forming has been restricted by the forming limit angle, and it is difficult to process parts with large forming angles, and there is a lack of a way to replenish the sheet metal during processing In addition, at present, the fixtures of progressive forming machine tools are still in the state of manually clamping the sheet. Every time the parts are processed, the sheet needs to be manually clamped. When the upper and lower platens are replaced, the tool needs to be re-set. The blank-holding force of the traditional fixture is completely provided by the locking force of the hexagon socket head screws at the four corners of the press pla

Method used

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Example Embodiment

[0030] The present invention will be further described below in conjunction with the drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0031] Such as figure 1 As shown, the hydraulic fixture based on the progressive forming machine tool includes: support table 1, guide post 2, lower support plate 3, guide sleeve 4, upper support plate 5, M8 hexagon socket screw 6, upper pressure plate 7, lower pressure plate 8, hydraulic cylinder Piston rod 9, hydraulic cylinder 11, M6 hexagon socket screw 13, etc., the lower end of the guide column 2 is cold pressed into the support table 1, the upper end of the guide column 2 is cold pressed into the upper support plate 5, and the upper frame of the upper support plate 5 passes through the M8 Hexagon screws 6 and internal threaded holes 14 fix the upper plate 7, the lower pallet 3 is assembled w

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Abstract

The invention discloses a hydraulic fixture based on a progressive forming machine tool. The hydraulic fixture based on the progressive forming machine toolis characterized by including a support table, an upper support plate, a lower support plate, an upper pressing plate, a lower pressing plate, a hydraulic device, guide pillars and guide sleeves, wherein the lower ends and the upper ends of thefour guide pillars are cold-pressed into the support table and the upper support plate correspondingly, the lower support plate is arranged between the support table and the upper support plate, andthe lower support plate is assembled through the guide pillars and the guide sleeves; the upper pressing plate and the lower pressing plate are correspondingly installed on a lower frame of the uppersupport plate and an upper frame of the lower support plate; the hydraulic device is arranged between the lower support plate and the support table, and two ends of the hydraulic device are correspondingly connected with the support table and the lower support plate through fasteners. The edge-pressing force of the four sides of each pressing plate is independent of each other so that the pressingplates of the hydraulic fixture based on the progressive forming machine tool can be simultaneously controlled and also can be correspondingly controlled and the edge-pressing force can be changed over time in the machining process; by reducing the edge-pressing force of the pressing plates, the fluidity of the plate material is strengthened, the plate material is convenient to feed in the machining process, the break of the plate material is avoided in the machining process, and the formability performance of the plate material is significantly improved.

Description

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Claims

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Application Information

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Owner NANJING INST OF TECH
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