Opposite teeth extruding type fine-blanking die and fine-blanking method adopting same

An extrusion and die technology, applied in the field of opposite-tooth extrusion fine-blanking dies, can solve the problems of increasing the three-dimensional compressive stress in the stamping deformation area, fine-blanking of low-plastic plates, and thick plates, and achieve large plastic deformation. range effect

Inactive Publication Date: 2011-05-04
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the fine blanking die of the ring gear strong blanking die is not suitable for the fine blanking processing of thick plates and high strength and low plasticity plates, the present invention proposes a fine blanking die of opposed tooth ex

Method used

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  • Opposite teeth extruding type fine-blanking die and fine-blanking method adopting same
  • Opposite teeth extruding type fine-blanking die and fine-blanking method adopting same
  • Opposite teeth extruding type fine-blanking die and fine-blanking method adopting same

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Embodiment Construction

[0022] The opposed tooth extruding type fine blanking die of the present invention has the structure as attached figure 1 As shown, on the upper side of the axial joint surface of the mould, there is a slidingly fitted opposing tooth plate 1 and a convex and concave die 2, and the opposing tooth plate 1 is arranged around the convex and concave die 2, and on the lower side of the axial joint surface of the mold, a There is a toothed concave die 7 and an anti-top plate 8 that are slidingly fitted, and the toothed concave die 7 is arranged around the anti-top plate 8. The opposite tooth plate 1 and the toothed concave die 7 are respectively facing the two surfaces of the blank 10, and are respectively provided with convex The opposing gear plate ring gear 11 and the toothed die ring gear 71 form a pair of opposing teeth. The cross-sections of the two ring gears are both triangular tooth shapes, and the tooth tips of the triangular tooth shapes are respectively facing the two side...

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Abstract

The invention discloses an opposite teeth extruding type fine-blanking die and a fine-blanking method using the die. Opposite tooth-shaped plates and convex-concave dies are arranged on the upper side of an axial combining surface of the die; teeth cavity dies and anti-jacking plates are arranged on the lower side of the axial combining surface of the die; the opposite tooth-shaped plates and the teeth cavity dies are respectively provided with protruded annular gears, the section of the annular gear is of triangle tooth shape, and the contact lines of the annular gears and a blank are respectively arranged outside a blank upper workpiece outline and surround the outline of the workpiece. When a workpiece is blanked, an upper annular gear and a lower annular gear are respectively pressed into the workpiece to prevent a blank material from flowing in the horizontal direction, and the previous-period extrusion is carried out on the blank material so as to form a strong three dimension compressive stress inside the blank material, reduce the area of a tensile stress generated by the blank material in the blanking process, avoid the cracks, and eliminate sharp edges and burrs of the workpiece. By the invention, fine-blanked workpieces with good quality and high precision can be manufactured by utilizing a universal blanking device so as to promote the development of fine-blanking industry.

Description

technical field [0001] The invention relates to a fine-blanking die, in particular to an opposed-tooth extruding fine-blanking die and a fine-blanking method using the die. Background technique [0002] Fine blanking is to directly punch out parts with good cross-section quality and high dimensional accuracy on the sheet metal by using a mold with a special structure. It is suitable for the production of large quantities of high-precision plate-shaped parts. It is currently used in clocks, cameras, precision instruments, household appliances and other industries. , has been widely used. In the usual fine blanking process, the ring gear is used to press the fine blanking die with strong edge pressing. In the fine blanking process, the ring gear with a triangular tooth cross section is first pressed into the blank, and the mechanical blocking effect of the ring gear and the friction between the blank material and the die are used. force to prevent the blank material from flow...

Claims

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Application Information

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IPC IPC(8): B21D37/10B21D28/34
Inventor 邓明吕琳张永固
Owner CHONGQING UNIV OF TECH
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