CN203109034U

CN203109034U - Punching tool

Info

Publication number: CN203109034U
Application number: CN 201220745037
Authority: CN
Inventors: 刘家健; 蒋元伟; 贺核心; 何圣靓
Original assignee: China Railway No 5 Engineering Group Co Ltd; Electromechanical Co Ltd of China Railway No 5 Engineering Group Co Ltd
Current assignee: China Railway No 5 Engineering Group Co Ltd; Electromechanical Co Ltd of China Railway No 5 Engineering Group Co Ltd
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2013-08-07
Anticipated expiration: 2022-12-31

Abstract

The utility model relates to a punching tool which comprises an upper die base, a lower die base and a punch, wherein the lower die base is used for placement of workpieces, the punch is arranged on the lower side of the upper die base and is installed on the bottom face of the upper die base through a fixing structure, a lower die provided with a discharge groove is installed on the lower die base, an unloading board is arranged above the lower die, the workpieces are placed between the lower die and the unloading board, the lower die and the unloading board are located through a locating block which is arranged between the lower die and the unloading board, and the lower die, the unloading board and the locating block are fixed through fasteners. The lower die and the unloading board are respectively provided with a punching hole which corresponds to the punch. The punching tool is reasonable in structure, high in production efficiency, stable in quality, high in accuracy of produced parts and in consistency, capable of reducing errors of hole distances to 0.2-0.5mm, low in production cost and good in economic benefit. On the basis of equal yield, investment of personnel, equipment and auxiliary materials is greatly reduced.

Description

A kind of punching frock

Technical field

The utility model relates to a kind of punching frock.

Background technology

At present, all be the processing mode that adopts drilling machine boring as punching on the T-steel at workpiece, every of every bench drill can only be produced 200 T-steels, do not satisfy the needs of producing far away, not only production efficiency is low, and the pitch-row error is bigger, but also takies equipment and need to drop into a lot of costs of labor.

Summary of the invention

The purpose of this utility model is, at the deficiencies in the prior art, provides a kind of punching frock, reduces the pitch-row error, and can boost productivity.

The technical solution of the utility model is, a kind of punching frock, comprise upper bolster, the die shoe that is used for place work piece and the drift of upper bolster downside, described drift is installed in the upper bolster bottom surface by fixed structure, the counterdie of mounting strap blow tank on the described die shoe, this counterdie top is provided with stripper, and described workpiece places between counterdie and the stripper, and counterdie and stripper are located and by securing member counterdie, stripper and locating piece fixed by being located at locating piece between the two; Be equipped with the punching corresponding with drift on described counterdie and the stripper.

The clamping of this frock is fairly simple, and the space that only needs workpiece to be put into stripper, locating piece and counterdie formation gets final product, and when drift returned, stripper blocked workpiece, and workpiece namely separates with drift.Operant level to the workman requires lower.

Guide pillar is installed in described upper bolster bottom surface, and at the correspondence position of counterdie the guide pin bushing that cooperates with guide pillar is installed, and realizes the location of upper bolster and die shoe.

The blow tank of described counterdie is to be located at the downside of counterdie and the cell body that is communicated with punching in the counterdie, and the waste material that the hole has been dashed in tap directly enters in the blow tank.

Symmetry is installed a plurality of drifts, and the length of outside drift is greater than the length of inboard drift; When drift got off, the hole in the subpunch outside dashed middle hole again, and one-off hole-piercing is finished in two steps, has reduced shear stress, has reduced the loss to mould and equipment simultaneously.

Described fixed structure comprises the ejector block that is fixed on the upper bolster bottom surface and the fixed head of ejector block downside, and the footstock of described drift is installed on the fixed head; Described fixed head bottom is provided with the backing plate that passes drift.

During work, be placed on the counterdie cutting out good workpiece such as T-steel, and locate with locating piece.Drift is descending, and when the drift in the outside entered counterdie, first both sides blanking continued when descending again, and middle drift enters the punching operation that counterdie is finished interstitial hole again; The forcing press lucky bottom dead centre that arrives this moment.When patrix returned, stripper blocked workpiece, and drift unloads from workpiece.

As known from the above, punching tool structure described in the utility model is reasonable, productivity ratio is high; Steady quality, the part accuracy height of production, uniformity height; The pitch-row error is reduced to 0.2 ~ 0.5mm; Production cost is low, good in economic efficiency.On the equal units of production basis, significantly reduced the input of personnel, equipment, auxiliary material.

Description of drawings

Fig. 1 is the structural representation of punching frock described in the utility model.

The specific embodiment

As shown in Figure 1, a kind of punching frock comprise 4 drifts 7 that upper bolster 1, the die shoe 12 that is used for place work piece and upper bolster 1 downside symmetry are installed, and the length of two drifts in the outside is greater than the length of inboard 2 drifts; Drift 7 is installed in upper bolster 1 bottom surface by fixed structure, the counterdie 11 of mounting strap blow tank on the described die shoe 12, these counterdie 11 tops are provided with stripper 8, described workpiece places between counterdie 11 and the stripper 8, and counterdie 11 and stripper 8 are by being located at locating piece 10 location between the two and counterdie 11, stripper 8 and locating piece 10 is fixing by securing member 9; Be equipped with the punching corresponding with drift 7 on described counterdie 11 and the stripper 8; Guide pillar 5 is installed in upper bolster 1 bottom surface, and at the correspondence position of counterdie 11 guide pin bushing 13 that cooperates with guide pillar 5 is installed.

The blow tank of counterdie 11 is to be located at the downside of counterdie 11 and the cell body that is communicated with punching in the counterdie 11.

Fixed structure comprises the ejector block 2 that is fixed on upper bolster 1 bottom surface and the fixed head 4 of ejector block 2 downsides, the footstock of described drift 7 is installed on the fixed head 4, fixed head 4 bottoms are provided with the backing plate 6 that passes drift, and upper bolster 1, ejector block 2, fixed head 4 and backing plate 6 are fastening by being connected and fixed bolt 3.

Securing member 9 is alignment pin.

Claims

1. punching frock, comprise upper bolster (1), be used for the die shoe (12) of place work piece and the drift (7) of upper bolster (1) downside, it is characterized in that, described drift (7) is installed in upper bolster (1) bottom surface by fixed structure, described die shoe (12) is gone up the counterdie (11) of mounting strap blow tank, this counterdie (11) top is provided with stripper (8), described workpiece places between counterdie (11) and the stripper (8), and counterdie (11) and stripper (8) by be located between the two locating piece (10) location and by securing member (9) with counterdie (11), stripper (8) and locating piece (10) are fixing; Be equipped with the punching corresponding with drift (7) on described counterdie (11) and the stripper (8).

2. according to the described punching frock of claim 1, it is characterized in that guide pillar (5) is installed in described upper bolster (1) bottom surface, and at the correspondence position of counterdie (11) guide pin bushing (13) that cooperates with guide pillar (5) is installed.

3. according to the described punching frock of claim 1, it is characterized in that, the blow tank of described counterdie (11) for the downside that is located at counterdie (11) and with counterdie (11) in the cell body that is communicated with of punching.

4. according to the described punching frock of claim 1, it is characterized in that symmetry is installed a plurality of drifts (7), and the length of outside drift is greater than the length of inboard drift.

5. according to the described punching frock of one of claim 1-4, it is characterized in that, described fixed structure comprises the ejector block (2) that is fixed on upper bolster (1) bottom surface and the fixed head (4) of ejector block (2) downside, and the footstock of described drift (7) is installed on the fixed head (4).

6. according to the described punching frock of claim 5, it is characterized in that described fixed head (4) bottom is provided with the backing plate (6) that passes drift.