CN204799757U - Terrace die that punches a hole is takeed on to awl - Google Patents
Terrace die that punches a hole is takeed on to awl Download PDFInfo
- Publication number
- CN204799757U CN204799757U CN201520498166.0U CN201520498166U CN204799757U CN 204799757 U CN204799757 U CN 204799757U CN 201520498166 U CN201520498166 U CN 201520498166U CN 204799757 U CN204799757 U CN 204799757U
- Authority
- CN
- China
- Prior art keywords
- convex shoulder
- shoulder
- hole
- terrace die
- piercing punch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The utility model relates to a terrace die field of punching a hole discloses a terrace die that punches a hole is takeed on to awl, contains blanking pole (1), dead lever (2) and convex shoulder (3), blanking pole (1) and convex shoulder (3) set up respectively the both ends of dead lever (2), convex shoulder (3) are the frustum form, just less terminal surface in convex shoulder (3) with dead lever (2) seamless. Compared with the prior art, utility model will punch a hole, and the shape design of convex shoulder becomes the frustum form in the terrace die, has increased the lifting surface area of convex shoulder, has reduced the processing residual stress of convex shoulder with dead lever hookup location to effectively improved the intensity of convex shoulder, greatly reduced the terrace die cracked probability of convex shoulder when punching press high strength steel board of punching a hole, has improved life, thereby has improved production efficiency, reduced manufacturing cost, in addition for the life of the terrace die of guaranteeing to punch a hole, with it the mounting hole of complex terrace die fixing base need with the frustum shape and the precision phase -match of convex shoulder.
Description
Technical field
The utility model relates to piercing punch field, particularly one cone shoulder piercing punch.
Background technology
Along with the development of auto industry, environmental pollution day by day serious, energy-saving and emission-reduction require also more and more stronger, and the high-strength plate arisen at the historic moment, ultrahigh strength board have become the important means of automotive light weight technology, and thermoforming steel part is exactly a typical class.The thing followed is that the difficulty of processing of high-strength steel sheet increases, also more and more higher to the requirement of this type of steel plate mould of processing.
High-strength steel sheet is as the term suggests be exactly a class steel plate with high-tensile, high-yield strength, high shear strength.In high-strength steel sheet punching process, punching is a large class.By punch force calculation formula: P=K*L*t* τ P-flat edge blanking pressure (N); T-material thickness (mm); L-stamping-out girth (mm); τ-material shearing strength (MPa); K-safety coefficient is known, and material shearing strength τ is larger, and the blanking pressure needed for punching is also larger.According to the transfer principle of power and active force and reaction force principle, the power needed for punching can act in the plane of piercing punch stiff end.
The piercing punch generally applied now is flat shoulder type, as shown in Figure 1, a step-like flat shoulder 3 is had at the stiff end of piercing punch, flat shoulder piercing punch can lean on flat shoulder 3 and holder to match moving up and down of incompatible restriction piercing punch, and to play the effect of fixing piercing punch, the power needed for punching is born by the end face of putting down shoulder 3, when die-cut high-strength steel sheet, because the shearing strength of steel plate is comparatively large, required blanking pressure is also comparatively large, the stressed also corresponding increase of flat shoulder.Thickness h due to the flat shoulder 3 of existing piercing punch is thinner (5 ~ 8mm), and flat shoulder 3 is connected with the right angle between fixed bar 2 being 90 °, inner when machined can have certain stress, so be easy to fracture when flat shoulder 3 is subject to greater impact, cause scrapping of piercing punch, delay production accordingly, reduced production efficiency, add production cost.
Utility model content
utility model object:for problems of the prior art, the utility model provides a kind of cone shoulder piercing punch, effectively improves the intensity of convex shoulder, greatly reduce the probability of piercing punch convex shoulder fracture when punching press high-strength steel sheet, improve service life, thus improve production efficiency, reduce production cost.
technical scheme:the utility model provides a kind of cone shoulder piercing punch, comprise stamping-out bar, fixed bar and convex shoulder, described stamping-out bar and described convex shoulder are separately positioned on the two ends of described fixed bar, and described convex shoulder is frustum, and comparatively small end face in described convex shoulder and described fixed bar seamless connection.
Preferably, described convex shoulder is identical with the diameter of described fixed bar compared with the diameter of small end face.
Preferably, the cone angle of the conical surface of described convex shoulder is 10 ~ 20 °.The conical surface of convex shoulder increase effectively the lifting surface area of piercing punch stiff end, and the bottom of the conical surface and fixed bar larger obtuse angle transition, substantially reduce machining stress, improve the intensity of tapered shoulder.
Preferably, the height of the described conical surface is 15 ~ 20mm.Larger height of conical surface improves the intensity of convex shoulder, greatly reduces the probability of raised shoulder edge forced breakage, improves the service life of this piercing punch.
Preferably, the angle tolerance of described cone angle is ± 0.03 °; The surface roughness of the described conical surface is Ra1.6.Less angle of taper tolerance and suitable conical surface surface roughness can ensure accurate coordinating between convex shoulder with piercing punch holder, ensure convex shoulder uniform force, extend the service life of piercing punch.
Preferably, be circular sliding slopes between described stamping-out bar and described fixed bar.Circular sliding slopes can reduce residual stress during machined greatly, extends the service life of piercing punch.
Preferably, the diameter of described stamping-out bar is less than the diameter of described fixed bar.The less intensity that effectively can ensure piercing punch stiff end of stamping-out shank diameter.
beneficial effect:the profile design of convex shoulder in piercing punch is become frustum by the utility model, increase the lifting surface area of convex shoulder, reduce the forming residual stress of convex shoulder and fixed bar link position, thus effectively improve the intensity of convex shoulder, greatly reduce the probability of piercing punch convex shoulder fracture when punching press high-strength steel sheet (as thermoforming steel), improve service life, thus improve production efficiency, reduce production cost; In addition for ensureing service life of piercing punch, the installing hole needs of the punch holder coordinated with it and the frustum shape of convex shoulder and precision match.
Accompanying drawing explanation
Fig. 1 is flat shoulder piercing punch structural representation of the prior art;
Fig. 2 is cone shoulder piercing punch structural representation in the utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model preferred embodiment is described in detail.
Present embodiments provide for a kind of cone shoulder piercing punch, as shown in Figure 2, the stamping-out end of this cone shoulder piercing punch is cylindrical stamping-out bar 1, stiff end is the convex shoulder 3 of frustum, fixed by cylindrical fixed bar 2 between stamping-out bar 1 and convex shoulder 3, circular sliding slopes between stamping-out bar 1 and fixed bar 2, and the diameter of stamping-out bar 1 is less than the diameter of fixed bar 2, the lower end of convex shoulder 3 is identical with the diameter of fixed bar 2 compared with the end face diameter of small end face, and the two seamless connection; The taper angle theta of the conical surface 31 of convex shoulder 3 controls between 10 ~ 20 °, the angle tolerance of taper angle theta controls at ± 0.03 °, the surface roughness of the conical surface 31 is Ra1.6, the height h(of the conical surface 31 and boss compared with large end face and compared with the spacing between small end face) be 15 ~ 20mm.
Above-mentioned embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalent transformations of doing according to the utility model Spirit Essence or modification, all should be encompassed within protection domain of the present utility model.
Claims (8)
1. a cone shoulder piercing punch, comprise stamping-out bar (1), fixed bar (2) and convex shoulder (3), described stamping-out bar (1) and described convex shoulder (3) are separately positioned on the two ends of described fixed bar (2), it is characterized in that, described convex shoulder (3) is frustum, and comparatively small end face in described convex shoulder (3) and described fixed bar (2) seamless connection.
2. cone according to claim 1 shoulder piercing punch, is characterized in that, described convex shoulder (3) identical with the diameter of described fixed bar (2) compared with the diameter of small end face.
3. cone shoulder piercing punch according to claim 1, it is characterized in that, the cone angle of the conical surface (31) of described convex shoulder (3) is 10 ~ 20 °.
4. cone shoulder piercing punch according to claim 3, it is characterized in that, the height of the described conical surface (31) is 15 ~ 20mm.
5. cone shoulder piercing punch according to claim 3, it is characterized in that, the angle tolerance of described cone angle is ± 0.03 °.
6. cone shoulder piercing punch according to claim 3, it is characterized in that, the surface roughness of the described conical surface (31) is Ra1.6.
7. the cone shoulder piercing punch according to any one of claim 1 ~ 6, it is characterized in that, be circular sliding slopes between described stamping-out bar (1) and described fixed bar (2).
8. the cone shoulder piercing punch according to any one of claim 1 ~ 6, it is characterized in that, the diameter of described stamping-out bar (1) is less than the diameter of described fixed bar (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520498166.0U CN204799757U (en) | 2015-07-13 | 2015-07-13 | Terrace die that punches a hole is takeed on to awl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520498166.0U CN204799757U (en) | 2015-07-13 | 2015-07-13 | Terrace die that punches a hole is takeed on to awl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204799757U true CN204799757U (en) | 2015-11-25 |
Family
ID=54584648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520498166.0U Expired - Fee Related CN204799757U (en) | 2015-07-13 | 2015-07-13 | Terrace die that punches a hole is takeed on to awl |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204799757U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424320A (en) * | 2016-10-13 | 2017-02-22 | 周峰 | Automobile broken hole punch |
-
2015
- 2015-07-13 CN CN201520498166.0U patent/CN204799757U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424320A (en) * | 2016-10-13 | 2017-02-22 | 周峰 | Automobile broken hole punch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203764734U (en) | Fine-blanking extrusion die of star wheel of clutch | |
| CN205056836U (en) | High strength steel board hot impact forming part deburring cut -out press | |
| CN204799757U (en) | Terrace die that punches a hole is takeed on to awl | |
| CN204171158U (en) | A kind of multi-functional punching die | |
| CN201720378U (en) | Mould for processing gear ring blank | |
| CN202591382U (en) | Stretching mould for disclike workpiece | |
| CN204912469U (en) | Hole flanging drift punches a hole | |
| CN204584005U (en) | Thick material sleeve aperture punch die | |
| CN202343764U (en) | Split type upper die at work station B of numerical control punch | |
| CN204182767U (en) | The disposable mould at angle steel upper punch different pore size | |
| CN202861114U (en) | Punching punch head | |
| CN202591385U (en) | Drawing die for trumpet-shaped cup-shaped workpiece | |
| CN202224589U (en) | Machining device for outer chain plates | |
| CN205074398U (en) | Drift of punching press compressor valve piece through -hole | |
| CN104275406A (en) | Continuous punching and blanking die | |
| CN204234561U (en) | Hinge stiffening plate part punching die under a kind of arrangements for automotive doors | |
| CN204545140U (en) | A kind of composite punching die for electric limit pad and limit case pad | |
| CN202591383U (en) | Cupped workpiece shaping mould with step | |
| CN102814409A (en) | Material dropping and punching die of steel plate spring clip | |
| CN201791892U (en) | Split upper anvil stand | |
| CN104646544A (en) | Stamping die for large diameter flange | |
| CN204449157U (en) | A kind of forging drift | |
| CN204093967U (en) | A kind of punching and blanking continuous mould | |
| CN204320949U (en) | A kind of cold forging intense beam mould abnormity mould | |
| CN207642117U (en) | A kind of diel of automobile end cap part |
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 |
Granted publication date: 20151125 Termination date: 20210713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |