Closed extruding fine blanking die based on floating female die structure

A die and fine blanking technology is applied to the floating die structure of closed extrusion fine blanking and the field of obtaining closing force.

Inactive Publication Date: 2014-02-26
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is a shortage of molds for this new type of fine blanking process, and there is an urgent need for the birth of a new type of fine blanking die structure

Method used

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  • Closed extruding fine blanking die based on floating female die structure

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Embodiment Construction

[0017] Closed extrusion fine blanking die structure of the present invention is as figure 1 as shown, figure 1 The left side of is to reflect the position before the start of forming, and the right is to reflect the situation at the end of forming. On the upper side of the axial joint surface of the mould, an auxiliary die 7, a stop ring 8 and a punch 9 are arranged, and an annular material pit is arranged on the edge of the die mouth of the auxiliary die. The auxiliary die 7 can move up and down, and it is a sliding fit with the stop ring 8 and the punch 9. A dowel 11 is arranged on the upper surface of the auxiliary die 7, and the dowel 11 passes through the punch fixed plate 10, the backing plate and the upper die holder 12, and transmits the power of the fine blanking cylinder of the equipment. On the lower side of the mold axial joint surface, a main die 3 is provided, and an annular material pit is arranged on the edge of the die opening of the main die. The storage p...

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Abstract

The invention provides a closed extruding fine blanking die based on a floating female die structure. The die is provided with a floating auxiliary female die, can realize early extrusion closure and fine blanking required by a closed extruding fine blanking process, can meet the process requirement of keeping two subsequent forces constant in the process, a closing force is obtained from a fine blanking piston of equipment through a force transmission rod, and the closing force and an anti-jacking force are easy to adjust. The die can be used manufacturing parts with low plasticity and large thickness, ensures high section quality and dimensional accuracy, and is convenient to popularize and apply in the fine blanking process.

Description

technical field [0001] The invention relates to a fine-blanking die, in particular to a structure of a closed-extrusion fine-blanking floating die and a method for obtaining closing force. 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 ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D28/14
Inventor 吕琳邓明宁国松
Owner CHONGQING UNIV OF TECH
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