CN203817150U - Anti-breakage taper die - Google Patents
Anti-breakage taper die Download PDFInfo
- Publication number
- CN203817150U CN203817150U CN201420182265.3U CN201420182265U CN203817150U CN 203817150 U CN203817150 U CN 203817150U CN 201420182265 U CN201420182265 U CN 201420182265U CN 203817150 U CN203817150 U CN 203817150U
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- CN
- China
- Prior art keywords
- bar
- diameter
- taper
- bar part
- straight
- Prior art date
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Abstract
The utility model discloses an anti-breakage taper die. The die comprises a punching bar, wherein the front end of the punching bar comprises a straight-bar part with a constant diameter, a taper-bar part fixedly connected with the straight-bar part, and a tail-bar part fixedly connected with the rearmost part of the taper-bar part, wherein the diameter of the taper-bar part is gradually reduced from the rear end to the front end, and the smallest diameter of the taper-bar part is the same as that of the straight-bar part; the diameter of the tail-bar part is equal to the largest diameter of the taper-bar part; the protecting sleeve with an inner diameter slightly larger than that of the tail-bar part is arranged at the tail-bar part. According to the utility model, through the adoption of the die, the taper-shaped punching bar is protected effectively, the radial deformation of the punching bar is reduced, the service life of the punching bar is prolonged, the service life of the punching bar is stabilized and is maintained within a certain range, instead of a stronger randomness of the punching bar in the prior art.
Description
Technical field
The utility model relates to a kind of anti-breaking tapering mould, belongs to metal manufacture field.
Background technology
In the processing technology of small-sized or micro metal sleeve pipe, the endoporus of metal sleeve is often directly stamped to form by cold-extrusion technology.The cold punching die that punching press endoporus needs often adopts jumper bar to realize the object of punching press endoporus.But because endoporus small-sized or micro metal sleeve pipe is less, therefore the diameter of jumper bar is less, at endoporus, it is straight hole, all internal diameters are all during identical endoporus, and jumper bar is cylinder, still can use, but when endoporus is bellmouth, jumper bar must change tapered rod into, causes jumper bar mechanical strength significantly to reduce, and the life-span of jumper bar is extremely inhomogeneous.
Utility model content
The utility model, for solving prior art problem, provides a kind of anti-breaking tapering mould of long service life.
The technical solution of the utility model is: a kind of anti-breaking tapering mould, comprise jumper bar, described jumper bar front end comprises the straight-bar portion of a constant diameter, one the closer to point diameter less and minimum diameter cone bar portion identical with described straight-bar portion and that be fixedly connected with described straight-bar portion, and be fixedly connected with the rearmost end of described cone bar portion and foot piece portion that diameter equates with the maximum gauge of described cone bar portion, described foot piece portion is provided with the protective jacket that an internal diameter is slightly larger than described foot piece portion.
As preferably, described protective jacket profile is cylindrical, and cross section is annular.
As preferably, the angle between described cone bar portion's shaft section both sides is 30 ~ 45 degree.
As preferably, the diameter of described straight-bar portion is not more than half of diameter of described foot piece portion.
As preferably, described protective jacket is cylindrical for what made by hard material.
As preferably, the external diameter of the internal diameter of described protective jacket and described foot piece portion is poor is not more than 0.5% of described foot piece portion external diameter.
In the actual production of Sheet Metal Forming Technology, cylindrical jumper bar service life of punching press straight hole still can, once and use bellmouth punching press; use taper jumper bar; the life-span of mould jumper bar very unstable, only often there will be and to use several times, jumper bar is just scrapped because of fracture.Applicant is through scrutinizing after contrast, find that its reason is because the dimensional accuracy of jumper bar own is limited, due in punching course, jumper bar bears larger stress, this difference in size can cause jumper bar to occur radial deflection, the material of using based on manufacture jumper bar is often very focused on the hardness of jumper bar itself, cause the toughness of jumper bar own not enough, this skew radially has fatal damage to jumper bar, often after using several times, jumper bar is just scrapped because this radial deflection causes fracture, and conventional mould jumper bar often has the service life of several ten thousand times.The applicant is after determining not long reason of taper punch rod life-span; in traditional taper punch rod, add a protective sleeve; protective sleeve is arranged between jumper bar and the slide rail at jumper bar place; for compensating or offset the radial deflection that taper jumper bar produces in use; protection taper jumper bar does not rupture, and has effectively extended the service life of jumper bar.
In sum, the utlity model has following advantage:
1, effectively protect taper jumper bar, reduce the radially deformation of jumper bar, extend the service life of jumper bar;
2, stablize the service life of jumper bar, is maintained within a certain range the service life of all jumper bars, rather than there is stronger randomness in the past;
3, simple in structure, low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model anatomical structure schematic diagram;
Fig. 3 is the utility model stamping products anatomical structure schematic diagram.
In figure, 1, foot piece portion, 2, cone bar portion, 3, straight-bar portion, 4, protective jacket.
The specific embodiment
With embodiment, the utility model is described in further detail below.
Embodiment mono-:
A kind of anti-breaking tapering mould, comprise jumper bar, jumper bar front end comprises the straight-bar portion 3 of a constant diameter, one is less and minimum diameter is identical with straight-bar portion 3 and the cone bar portion 2 that is fixedly connected with straight-bar portion 3 the closer to point diameter, and with the foot piece portion 1 that rearmost end is fixedly connected with and diameter equates with the maximum gauge of boring bar portion 2 of cone bar portion 2, foot piece portion 1 is provided with the protective jacket 4 that an internal diameter is slightly larger than foot piece portion 1, and protective jacket 4 profiles are cylindrical for what made by hard material, and cross section is annular.Wherein, the angle between cone bar portion 2 shaft section both sides is 32 degree, the diameter of straight-bar portion 3 be foot piece portion 1 diameter 1/3, the external diameter of the internal diameter of protective jacket 4 and foot piece portion 1 is poor is 0.2% of foot piece portion 1 external diameter.
When punching press, Metallic rod is cut into the cylinder that needs length by technique, and two end-grain cutting are flat, jumper bar is positioned over to the position coaxial with cylinder, by jumper bar stamped metal bar, Metallic rod central axis is squeezed out to the extruded hole with tapering, then the other end of this Metallic rod is stamped out to identical extruded hole equally, finally two extruded holes are connected, form the metal sleeve that technique needs as shown in Figure 3.
Embodiment bis-:
Be with the difference of embodiment mono-, wherein, the angle between cone bar portion 2 shaft section both sides is 30 degree, and the diameter of straight-bar portion 3 is half of diameter of foot piece portion 1, and the external diameter of the internal diameter of protective jacket 4 and foot piece portion 1 is poor is 0.5% of foot piece portion 1 external diameter.
Embodiment tri-:
Be with the difference of embodiment mono-, wherein, the angle between cone bar portion 2 shaft section both sides is 45 degree, the diameter of straight-bar portion 3 be not more than foot piece portion 1 diameter 1/4, poor 0.4% of foot piece portion 1 external diameter that is not more than of external diameter of the internal diameter of protective jacket 4 and foot piece portion 1.
Claims (6)
1. an anti-breaking tapering mould, comprise jumper bar, described jumper bar front end comprises the straight-bar portion (3) of a constant diameter, one is less and minimum diameter is identical with described straight-bar portion (3) and the cone bar portion (2) that is fixedly connected with described straight-bar portion (3) the closer to point diameter, and be fixedly connected with the rearmost end of described cone bar portion (2) and diameter and the foot piece portion (1) that the maximum gauge of described cone bar portion (2) equates, it is characterized in that: described foot piece portion (1) is provided with the protective jacket (4) that an internal diameter is slightly larger than described foot piece portion (1).
2. anti-breaking tapering mould according to claim 1, is characterized in that: described protective jacket (4) profile is cylindrical, and cross section is annular.
3. according to anti-breaking tapering mould described in claim 1 or 2, it is characterized in that: the angle between described cone bar portion (2) shaft section both sides is 30 ~ 45 degree.
4. anti-breaking tapering mould according to claim 2, is characterized in that: the diameter of described straight-bar portion (3) is not more than half of diameter of described foot piece portion (1).
5. anti-breaking tapering mould according to claim 1, is characterized in that: described protective jacket (4) is cylindrical for what made by hard material.
6. anti-breaking tapering mould according to claim 5, is characterized in that: poor 0.5% of described foot piece portion (1) external diameter that is not more than of external diameter of the internal diameter of described protective jacket (4) and described foot piece portion (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182265.3U CN203817150U (en) | 2014-04-16 | 2014-04-16 | Anti-breakage taper die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182265.3U CN203817150U (en) | 2014-04-16 | 2014-04-16 | Anti-breakage taper die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203817150U true CN203817150U (en) | 2014-09-10 |
Family
ID=51472692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420182265.3U Expired - Fee Related CN203817150U (en) | 2014-04-16 | 2014-04-16 | Anti-breakage taper die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203817150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106985204A (en) * | 2017-04-18 | 2017-07-28 | 成都力鑫科技有限公司 | A kind of hand punch with drill point defencive function |
-
2014
- 2014-04-16 CN CN201420182265.3U patent/CN203817150U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106985204A (en) * | 2017-04-18 | 2017-07-28 | 成都力鑫科技有限公司 | A kind of hand punch with drill point defencive function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20210416 |