CN207857651U - Punch-head assembly - Google Patents
Punch-head assembly Download PDFInfo
- Publication number
- CN207857651U CN207857651U CN201820163450.6U CN201820163450U CN207857651U CN 207857651 U CN207857651 U CN 207857651U CN 201820163450 U CN201820163450 U CN 201820163450U CN 207857651 U CN207857651 U CN 207857651U
- Authority
- CN
- China
- Prior art keywords
- punch
- fixed seat
- screens
- head assembly
- screens portion
- 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.)
- Active
Links
Landscapes
- Punching Or Piercing (AREA)
Abstract
The utility model provides a kind of punch-head assembly, and crackle is easy tod produce in the prior art for solving the problems, such as.It includes：Punch and fixed seat for installing the punch；The punch activity runs through the fixed seat from top to bottom, punch upper end described in the punch side is equipped with screens portion, the screens portion is up big and down small pyramidal structure, and it is the conical surface that the screens portion, which is stuck in the fixed seat and at the fixed seat and screens portion cooperation,；The punch side is equipped with spline structure, and the spline structure is for preventing the punch from being rotated in the fixed seat；The fixed seat upper surface is parallel to be equipped with backing plate, the top contact of the lower face of the backing plate and the screens portion.Punch passes through fixed seat from top to bottom, fixed seat is mounted on die holder, backing plate is sandwiched between fixed seat and die holder, when die holder moves, punch and die holder move synchronously, and are coordinated and are limited by mutual taper surface, by spline structure, play the role of rotation stop.
Description
Technical field
The utility model belongs to cold punching die technical field, more particularly to a kind of punch-head assembly.
Background technology
In automobile industry, lightweight is always a project pursued and inquired into, and the application of wherein high-strength steel sheet is
A kind of realization method of automotive light weight technology, more and more high-strength steel sheet uses on body of a motor car, high-strength steel sheet it is strong
Degree is also constantly being promoted, and the die cutting die of high-strength steel sheet is required also higher and higher.
High-strength steel sheet has high-tensile, high shear strength characteristic, passes through punch force calculation formula F=K* τ * L*t
(F blanking pressures N, k-factor, τ plate shearing strengths Mpa, L punching line length mm, t sheet thickness mm) can clearly know that plate is anti-
It is higher to cut intensity τ, required blanking pressure F is bigger.
According to force analysis and stress and the principle of reaction, in steel plate punching, blanking pressure can be transmitted to piercing punch and fix
On the shaft shoulder.Existing most commonly used piercing punch is stepped ramp type shaft shoulder pattern, as shown in Figure 1, can also be in the shaft shoulder for abnormal-shaped punch
Upper one standstill face of design is for determining that punch definitely uses angle.Abnormal-shaped punch is used cooperatively with fixed seat, play it is fixed with
Positioning action.Shaft shoulder root and fixing end are 90 ° and connect, and have the transition of the smaller angles R, this root exist simultaneously certain machining stress,
Heat treatment stress, when punch is subjected to larger blanking pressure, corresponding active force can also be transmitted to punch shaft shoulder position, easily make
It concentrates and cracks at punch shaft shoulder position stress, being scrapped so as to cause punch can not use, and can also reduce production efficiency.
Invention content
In view of the foregoing deficiencies of prior art, it the purpose of this utility model is to provide a kind of punch-head assembly, is used for
It solves the problems, such as to easy to produce crackle in the prior art.
In order to achieve the above objects and other related objects, the utility model provides a kind of punch-head assembly, including：Punch and use
In the fixed seat for installing the punch；
The punch activity runs through the fixed seat from top to bottom, and punch upper end is equipped with screens described in the punch side
Portion, the screens portion are up big and down small pyramidal structure, and the screens portion is stuck in the fixed seat and the fixed seat and institute
State at the cooperation of screens portion is the conical surface；
The punch side is equipped with spline structure, and the spline structure turns for preventing the punch in the fixed seat
It is dynamic；
The fixed seat upper surface is parallel to be equipped with backing plate, the top contact of the lower face of the backing plate and the screens portion.
The utility model is realized in this way punch passes through fixed seat from top to bottom, fixed seat is mounted on die holder, pad
Plate is sandwiched between fixed seat and die holder, and when die holder moves, punch and die holder move synchronously, and are carried out by mutual taper surface
Cooperation and limit, by spline structure, play the role of rotation stop.
Further, the taper surface in the screens portion and the angle of vertical direction are 20 °~25 °.
The taper surface of this field angle effectively increases screens portion forced area, and active force is effectively decomposed.
Further, the roughness of the taper surface in the screens portion is Ra0.8.
Further, the tolerance of the angle of the taper surface and vertical direction in the screens portion is ± 0.02 °.
Smaller angle tolerance and higher surface roughness just can guarantee the precision-fit between punch and screens ring, make
Its uniform stressed improves service life.
Further, the punch peripheral surface is cylinder, and the spline structure is rotation stop plane, the rotation stop plane and institute
State the contact of fixed seat inner wall.
Punch is avoided to rotate in the circumferential.
Further, the center of circle centre distance of punch described in the rotation stop plane separation is that the radius of the punch subtracts 2mm.
So that there are enough areas in standstill face, it can more make the stability of angle after punch installation cooperation.
Further, it is knuckle before the rotation stop plane and the screens portion, the radius of the knuckle is
2mm or more.Remaining machining stress, heat treatment stress presence are effectively reduced, while improving screens portion intensity, is also effectively dropped
The probability of low punch cracking timeliness.
Further, screens ring is equipped in the fixed seat, the screens ring inner wall is equipped with pyramidal structure, the screens ring
Kink is in the screens portion and the conical surface of the screens ring is consistent with the conical surface in screens portion.
When screens ring is worn, directly replace screens ring, do not have to replace fixed seat, effectively saved at
This.
Further, the screens ring outer diameter is more than the punch outer diameter 6mm or more.
There are enough load areas between fixed seat after ensureing screens ring stress；
Further, the hardness of the screens ring is HRC37~43.
Ensure the stability of screens ring in use.
As described above, the punch-head assembly of the utility model, has the advantages that：
One, the probability that punch cracks during punching production reduces.
Two, punch, which has, prevents rotating function.
Three, effectively improving punch service life improves stamping production efficiency.
Four, it is replaced by the abrasion of screens ring, has effectively saved cost.
Description of the drawings
Fig. 1 is shown as the schematic diagram of punch in the prior art.
Fig. 2 is shown as the punch-head assembly schematic diagram of the utility model embodiment one.
Fig. 3 is shown as the side schematic view of the punch of the utility model.
Fig. 4 is shown as the upward view of the punch of the utility model.
Fig. 5 is shown as the punch-head assembly schematic diagram of the utility model embodiment two.
Fig. 6 is shown as the schematic diagram of the screens ring of the utility model.
Component label instructions
1 punch
11 screens portions
12 rotation stop planes
111 knuckles
2 fixed seats
3 backing plates
4 screens rings
Specific implementation mode
Illustrate that the embodiment of the utility model, those skilled in the art can be by these by particular specific embodiment below
Content disclosed by specification understands other advantages and effect of the utility model easily.
It please refers to Fig.1 to Fig. 6.It should be clear that structure, ratio, size etc. depicted in this specification institute accompanying drawings, only to
Coordinate the revealed content of specification, so that those skilled in the art understands and reads, is not limited to the utility model
Enforceable qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size
Adjustment, in the case where not influencing the effect of the utility model can be generated and the purpose that can reach, should all still fall in the utility model
Revealed technology contents obtain in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", " left side ",
The term on " right side ", " centre " and " one " etc. is merely convenient to being illustrated for narration, rather than enforceable to limit the utility model
Range, relativeness are altered or modified, enforceable when being also considered as the utility model in the case where changing technology contents without essence
Scope.
Embodiment one,
Please see Fig. 2 to Fig. 4, the utility model provides a kind of punch-head assembly, including：Punch 1 and for installing the punching
First 1 fixed seat 2；1 lower end of punch punching press shape as needed is designed to corresponding shape, and 1 activity of the punch is from top to bottom
Through the fixed seat 2,1 upper end of punch described in 1 side of the punch is equipped with screens portion 11, and the screens portion 11 is up big and down small
Pyramidal structure, the screens portion 11 is stuck in the fixed seat 2 and is cone at the fixed seat 2 and 11 cooperation of screens portion
Face；1 side of the punch is equipped with spline structure, and the spline structure turns for preventing the punch 1 in the fixed seat 2
It is dynamic；2 upper surface of the fixed seat is parallel to be equipped with backing plate 3, the top contact of the lower face of the backing plate 3 and the screens portion 11.
Punch 1 passes through fixed seat 2 from top to bottom, and fixed seat 2 is mounted on die holder, and specific mounting means is to pass through bolt
It being then threaded into die holder through fixed seat 2 from bottom to up, backing plate 3 is sandwiched between fixed seat 2 and die holder, when die holder moves, punching
First 1 and die holder move synchronously, coordinated and limited by mutual taper surface, by spline structure, play the work of rotation stop
With after Multi-step forming, the taper hole of fixed seat 2 and the cooperation of screens portion 11 can be worn, and the diameter of taper hole becomes larger, and causes to rush
First 1 loosens, and is reached in abrasion and needs fixed seat 2 to be replaced or replaced the screens portion with larger diameter to a certain degree afterwards
Taper hole after 11 punch 1 is realized and worn matches.
Preferably, the taper surface in the screens portion 11 and the angle of vertical direction are 20 °~25 °.The cone of this field angle
Shape face effectively increases 11 forced area of screens portion, and active force is effectively decomposed.
Preferably, the roughness of the taper surface in the screens portion 11 is Ra0.8.The taper surface in the screens portion 11 with it is vertical
The tolerance of the angle z in direction is ± 0.02 °.Smaller angle tolerance and higher surface roughness just can guarantee punch 1 and card
Precision-fit between the ring of position, makes its uniform stressed, improves service life.
Specifically, 1 peripheral surface of the punch is cylinder, the spline structure is rotation stop plane 12, the rotation stop plane 12
With 2 inner wall of the fixed seat contact, i.e., 2 inner wall of fixed seat also be provided with 12 corresponding plane of rotation stop plane, realize the work(of rotation stop
Energy.Spline structure herein can also be the form of screens protrusion and retaining groove, but its structure is complex, herein preferably
The mode of rotation stop plane 12 realizes rotation stop.
Preferably, center of circle centre distance of the rotation stop plane 12 away from the punch 1 is that the radius of the punch 1 subtracts
2mm.So that there are enough areas in standstill face, it can more make the stability of angle after the installation cooperation of punch 1.
Preferably, it is knuckle 111, the knuckle 111 before the rotation stop plane 12 and the screens portion 11
Radius be 2mm or more.Remaining machining stress, heat treatment stress presence are effectively reduced, the same of 11 intensity of screens portion is improved
When, also effectively reduce the probability of the cracking timeliness of punch 1.
Preferably, 3 hardness of backing plate must not be less than HRC50, it is ensured that backing plate 3 has enough hardness that can bear punch 1 to pass over
Blanking pressure, and play protection die holder deformation purpose.
Embodiment two,
Embodiment two is improved on the basis of embodiment one, is please referred to Fig. 3 to Fig. 6, is equipped in the fixed seat 2
Screens ring 4,4 inner wall of screens ring are equipped with pyramidal structure, and 4 kink of screens ring is in the screens portion 11 and the screens
The conical surface of ring 4 is consistent with the conical surface in the screens portion 11.When screens ring 4 is worn, screens ring 4 is directly replaced, no
With fixed seat 2 is replaced, cost has effectively been saved.
Preferably, 4 outer diameter of screens ring is more than 1 outer diameter 6mm of the punch or more.It is after 4 stress of guarantee screens ring and solid
There are enough load areas between reservation 2；
Preferably, the hardness of the screens ring 4 is HRC37~43.Ensure the stability of screens ring 4 in use.
In conclusion the probability that the utility model punch 1 cracks during punching production reduces.Punch 1 have prevent
Rotating function.Effectively improving 1 service life of punch improves stamping production efficiency.It is carried out more by the abrasion of screens ring 4
It changes, has effectively saved cost.So the utility model effectively overcomes various shortcoming in the prior art and has high industrial
Utility value.
The above embodiments are only illustrative of the principle and efficacy of the utility model, new not for this practicality is limited
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications completed under refreshing and technological thought or change, should be covered by the claim of the utility model.
Claims (10)
1. a kind of punch-head assembly, which is characterized in that including：Punch and fixed seat for installing the punch；
The punch activity runs through the fixed seat from top to bottom, and punch upper end is equipped with screens portion, institute described in the punch side
It is up big and down small pyramidal structure to state screens portion, and the screens portion is stuck in the fixed seat and the fixed seat and the screens
It is the conical surface at portion's cooperation；
The punch side is equipped with spline structure, and the spline structure is for preventing the punch from being rotated in the fixed seat；
The fixed seat upper surface is parallel to be equipped with backing plate, the top contact of the lower face of the backing plate and the screens portion.
2. punch-head assembly according to claim 1, it is characterised in that：The folder of the taper surface and vertical direction in the screens portion
Angle is 20 °~25 °.
3. punch-head assembly according to claim 1, it is characterised in that：The roughness of the taper surface in the screens portion is
Ra0.8。
4. punch-head assembly according to claim 2, it is characterised in that：The folder of the taper surface and vertical direction in the screens portion
The tolerance at angle is ± 0.02 °.
5. punch-head assembly according to claim 1, it is characterised in that：The punch peripheral surface is cylinder, the rotation stop knot
Structure is rotation stop plane, the rotation stop plane and fixed seat inner wall contact.
6. punch-head assembly according to claim 5, it is characterised in that：The center of circle center of punch described in the rotation stop plane separation
Distance is that the radius of the punch subtracts 2mm.
7. punch-head assembly according to claim 5, it is characterised in that：It was before the rotation stop plane and the screens portion
Fillet is crossed, the radius of the knuckle is 2mm or more.
8. punch-head assembly according to claim 1, it is characterised in that：Screens ring, the screens are equipped in the fixed seat
Ring inner wall is equipped with pyramidal structure, and the screens ring kink is in the screens portion and the conical surface of the screens ring and the screens portion
The conical surface it is consistent.
9. punch-head assembly according to claim 8, it is characterised in that：The screens ring outer diameter is more than the punch outer diameter
6mm or more.
10. punch-head assembly according to claim 8, it is characterised in that：The hardness of the screens ring is HRC37~43.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820163450.6U CN207857651U (en) | 2018-01-31 | 2018-01-31 | Punch-head assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820163450.6U CN207857651U (en) | 2018-01-31 | 2018-01-31 | Punch-head assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207857651U true CN207857651U (en) | 2018-09-14 |
Family
ID=63460243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820163450.6U Active CN207857651U (en) | 2018-01-31 | 2018-01-31 | Punch-head assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207857651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114042802A (en) * | 2021-11-10 | 2022-02-15 | 中国航发贵州黎阳航空动力有限公司 | Machining device and machining method for special-shaped round hole of aluminum signboard |
-
2018
- 2018-01-31 CN CN201820163450.6U patent/CN207857651U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114042802A (en) * | 2021-11-10 | 2022-02-15 | 中国航发贵州黎阳航空动力有限公司 | Machining device and machining method for special-shaped round hole of aluminum signboard |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207857651U (en) | Punch-head assembly | |
| US20190023064A1 (en) | Wheel spoke with thickened edges around heat dissipation holes and its processing device | |
| CN202290953U (en) | Manual punching die | |
| CN108188669A (en) | The welding shaping method of silicone oil damper case and the device for realizing this method | |
| JP5921397B2 (en) | Apparatus and method for manufacturing brake piston | |
| CN202278133U (en) | Special tool for thread rolling | |
| CN106476553B (en) | A kind of Independent Suspension combination swing arm structure | |
| CN107813102B (en) | The Inspection Aircraft Wheels bearing hole rolling tool and rolling depression method of spring force | |
| CN103611860A (en) | Metal axial roller-grinding forming machine and roller-grinding forming technique thereof | |
| Zhu et al. | Investigation of a tailored blank for the elimination of forging laps during cup sidewall upsetting | |
| CN201592287U (en) | Compound alloy disc knife | |
| CN109420881A (en) | A kind of process for stamping of ribbon retainer | |
| CN202357799U (en) | Novel automobile half-axle | |
| CN109365548B (en) | Reinforcement roller way cuts back work piece and withdraws from structure | |
| CN202270926U (en) | Pre-forged part for automobile driven gear hole expanding forming process | |
| CN201768861U (en) | Precision forging die used for automobile reduction gear blank | |
| CN202573644U (en) | Engineering motor tractor axle shaft | |
| CN207656187U (en) | A kind of Inspection Aircraft Wheels bearing hole rolling tool of hydraulic pressurization | |
| CN202732925U (en) | Piston blank with two-body embedded type end surface welding structure for retarder | |
| CN205096468U (en) | Motor transmission gear forges fixing device | |
| CN102672417A (en) | Improvement on end cover nut stamping technique of mechanical steering gear | |
| CN217775213U (en) | Large-tonnage numerical control bending machine | |
| CN203868124U (en) | Multilayered wear-resistant balance bearing | |
| RU103081U1 (en) | TEAM PUNCH | |
| CN211222223U (en) | Press machine braking device adopting double-eccentric cam structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |