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Plate double-side three-point incremental forming device

An incremental forming and plate technology, applied in the field of plate plastic forming, can solve the problems of large forming force, limited forming shape, unadjustable distance between indenters, etc., and achieve the effect of improving efficiency, good modularization and compact structure

Active Publication Date: 2015-08-26
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the indenter of this device can only move up and down along the axis, the forming shape is limited, and the forming force is also relatively large, and the distance between the indenters cannot be adjusted

Method used

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  • Plate double-side three-point incremental forming device
  • Plate double-side three-point incremental forming device
  • Plate double-side three-point incremental forming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Double-sided double-point forming: suitable for small-scale forming

[0028] Such as Image 6 As shown, the first tool head 16 and the lower tool head 3 in the upper duplex tool head 4 participate in forming. The telescopic screw rod 18 of the second tool head 17 near the center of the plate of the double-link tool head before forming is shortened to the shortest, and the first tool head 16 on the outside is slightly elongated. During forming, only the first tool head 16 and the lower tool head 3 are jointly formed. The forming trajectory is a contour trajectory. After the upper and lower tool heads adjust their radial positions, the lower tool head 3 moves up, and the upper first tool head 16 moves down. After reaching the forming position, the upper and lower tool heads start to rotate synchronously. The vertical and radial directions of the tool head do not move. After one round of forming is completed, the lower tool head 3 moves down, and the upper duplex tool h...

Embodiment 2

[0030] Tool head movement, double-sided three-point incremental forming for simultaneous forming and shaping:

[0031] Such as Figure 7 As shown, the two tool heads 16, 17 of the upper double tool head 4 and the lower tool head 3 are all involved in the forming, the lower tool head 3 plays a supporting role at the bend of the sheet, and the second tool head 17 at the lower position is on the sheet. forming, while the upper first tool head 16 shapes the sheet in the formed area while increasing support stiffness. Before forming, the telescopic screw rods 18 of the two tool heads are adjusted to corresponding lengths according to the forming shape, and both points can contact the sheet material after being pressed down. During forming, the lower tool head 3 presses up, and the upper duplex tool head 4 presses down. The subsequent forming process is similar to the first forming method.

Embodiment 3

[0033] Local convex double-sided three-point incremental forming:

[0034] Such as Figure 8 As shown, the two tool heads 16, 17 of the upper double tool head 4 and the lower tool head 3 are all involved in forming, the lower tool head 3 acts on the upper protrusion, and the two tool heads 16, 17 of the double tool head 4 act On the inside and outside of the lower tool head, the sheet is formed into a convex structure. Before forming, the telescopic screw rods 18 of the two tool heads are adjusted to corresponding lengths according to the forming shape, and both points can contact the sheet material after being pressed down. During forming, the lower tool head 3 presses up, and the upper duplex tool head 4 presses down. The subsequent forming process is similar to the first forming method.

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Abstract

The invention discloses a plate double-side three-point incremental forming device with a simultaneous forming and shaping function. The forming device comprises a rack, a plate placing structure, a lower tool head, upper duplex tool heads, an upper tool head moving mechanism and a lower tool head moving mechanism. The forming device comprise one lower tool head and a pair of upper duplex tool heads; although only three tool heads are provided, the relative positions of the two or three tool heads can be changed, so that the forming device can be utilized for forming complex parts; besides, the upper duplex tool heads has the function of simultaneous forming and shaping in one movement, so that the forming efficiency is high.

Description

technical field [0001] The invention belongs to the field of plastic forming of plates, and in particular relates to a double-sided three-point incremental forming device for plates that can realize forming and shaping at the same time. Background technique [0002] Plastic forming technology is an important research and development direction in the field of manufacturing and processing, including die forging, punching, extrusion, drawing and other processing technologies. However, plastic forming generally requires special molds, which have high processing costs, long development cycles, and loss. In addition, traditional plastic forming is integral forming, integral loading, large forming force, high energy consumption, and high noise. Therefore, the traditional forming method is not suitable for the production of small batch parts, and then the concept of "flexible forming" was born. Flexible forming does not require special molds and can be applied to the forming of pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D21/00
Inventor 周颖聪赵亦希
Owner SHANGHAI JIAO TONG UNIV
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