CN1775406A - Dual positive clearance blanking method - Google Patents
Dual positive clearance blanking method Download PDFInfo
- Publication number
- CN1775406A CN1775406A CN 200510126576 CN200510126576A CN1775406A CN 1775406 A CN1775406 A CN 1775406A CN 200510126576 CN200510126576 CN 200510126576 CN 200510126576 A CN200510126576 A CN 200510126576A CN 1775406 A CN1775406 A CN 1775406A
- Authority
- CN
- China
- Prior art keywords
- stamping
- die
- blanking
- clearance
- present
- 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.)
- Pending
Links
Images
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The present invention relates to a double forward clearance blanking method. The male die or female die of said die equipment can be made into continuous step form, and its is characterized by that the height h of the step is 1/3-1/2 of the thickness t of material to be blanked, between male die and female die the double forward clearances are formed, clearance C1=(0.125-0.20)t, and the clearance C2=(0.02-1.10)t. Under the condition of general blanking die, general blanking clearance and general pressing machine said invention can raise shearing surface height of blanking piece section in once blanking stroke.
Description
Technical field
The Sheet Metal Forming Technology that the invention belongs in the metal forming technology is separated processing method.
Background technology
Punching process is a most traditional a kind of and most widely used processing method for stamping.The blanking part section is made up of 4 parts, promptly comprises the angle of collapsing, shear surface, the plane of disruption and burr.There are much relations in the height and the gap of its shear surface of the blanking part plane of disruption: if the blade clearance is moderate, for sheet part, it is thick 1/3 even 1/2 that the shear surface height of its blanking part section can reach material, but the shear surface height to reach material thick 1/2 and unstable; And for thick-plate parts, the shear surface height then is difficult to be stabilized on 1/3 the quantity; If the gap is too small, shear surface can increase, but usually secondary shearing face occurs, and die life is shorter.
In order to improve the height of blanking part shear surface, people have successively developed many new punching process, such as:
(1) fine punching (comprising little gap round edge stamping-out and negative clearance stamping-out).Though this method has effect preferably, die life is low, and requires equipment precision, rigidity height, and operation is trouble also;
(2) trimming.Trimming is blanking part to be placed on carry out a section finishing on the shaving die.Obvious this method has increased manufacturing procedure, even if adopt step drift or die (all need to process chip pocket between two steps and become discontinuous step), the processing of its scrap has influenced production efficiency again, and has brought operational hidden danger;
(3) essence is dashed.Adopt the essence of 4 technological measures such as gear ring pressing plate of V-type groove to dash, its section is shear surface basically entirely, but it need use smart stamping machine, drops into very greatly, and upkeep cost is also very big;
(4) the subtend die cuts off, and also claims subtend die essence to dash.The section of this technology also can reach full shear surface, but it needs the special press of two power up and down, has high input, operation and maintenance trouble;
(5) squash type stamping-out also claims to squeeze synchronously and cuts essence and dash.This technology is to design continuous step drift or die, and its shoulder height h is thick 0.1 times of material, forms the stamping-out of a positive gap, a negative clearance, belongs to half fine-edge blanking class.But this technology still needs similar essence to dash the special equipment that cuts off with the subtend die, has high input, and operation is trouble also;
In a word, up to the present, in the prior art, also do not find a kind of method that under the common stamping condition, obtains the higher shear face.Yet, in production reality, be sought after a kind of can be under the common stamping condition, make highly stable 1/3 or 1/2 even 2/3 the punching process of the shear surface of section of blanking part, especially to the slab blanking part at the thick t of material.If there is a kind of new technology can reach this level, then improved the quality of blanking part greatly, enlarged its scope of application, like this, also can make this blanking part safely and reliably as the drive mechanism part, make the Technological Economy of stamping-out processing be worth increase greatly.
Summary of the invention
The objective of the invention is under the common stamping condition, promptly adopt under the situation of common stamping mould, common stamping gap, ordinary press, in a punching stroke, improve shear surface height in the blanking part section, make it be far longer than the height that common stamping can reach, and it is thick over half to be stabilized in material.
The present invention is comprehensive common stamping, trimming and pushes this three kinds of deformation principles, and a kind of new punch process separation method-dual positive clearance blanking of design.
Dual positive clearance blanking of the present invention is meant drift or die in the secondary mould is made into continuous step, another still is traditional conventionally form, the height h of step gets 1/3～1/2 of the thick t of blanking part material, be h=(1/3～1/2) t, form two positive gaps between the step of drift (die) and the die (drift), be dual positive clearance, clearance C 1=(0.125～0.20) t wherein, clearance C 2=(0.02～0.10) t.
Punching process of the present invention both had been suitable for the stamping-out of punching part, also was suitable for the stamping-out of blank.
The present invention is for the punching part, be to manufacture and design a continuous step drift, as shown in Figure 1, its shoulder height h gets 1/3～1/2 of the thick t of material, be h=(1/3～1/2) t, adopt dual positive clearance, its C1 (0.125～0.20) t, C2=(0.02～0.10) t, die is a traditional form, equipment is ordinary press, a punching press, and the shear surface height of acquisition punching part section that can be stable is greater than the punching part of material thick 1/2.
The present invention is for blank, be to manufacture and design a continuous step die, as shown in Figure 2, its shoulder height h gets material thick 1/3～1/2, be h=(1/3～1/2) t, adopting also is dual positive clearance, its C1=(0.125～0.20) t, C2=(0.02～0.10) t, drift is a traditional form, equipment is ordinary press, a punching press, and the shear surface height of acquisition blank section that also can be stable is greater than the blank of material thick 1/2.
Dual positive clearance blanking of the present invention, its production efficiency is identical with common stamping, drop into also just the same with common stamping, die life is identical with the common stamping mould, the manufacture difficulty of mould does not increase basically yet, blanking pressure has increase (about 10%) slightly, many one complete thin circle waste material falls together in company with the big waste material of punching during punching, this kind waste material is up with drift when being blanking, should at any time dial away, but because of it is a whole circle, so the scrap during than trimming is easier to removing, the burr height of its section is lower slightly than common stamping part, at the common stamping mould, the common stamping gap, under the situation of ordinary press, in punching stroke, improve shear surface height in the blanking part section, make it be far longer than the height that common stamping can reach, and be stabilized in expect thick over half.
Description of drawings
Fig. 1 is the schematic diagram of punching of the present invention.1 is the stairstepping drift, and 2 is plate, and 3 is die; Wherein h is a shoulder height, and t is that the blanking part material is thick, and C1, C2 are dual positive clearance of the present invention.
Fig. 2 is the schematic diagram of blanking of the present invention.1 is drift, and 2 is plate, and 3 is the stairstepping die; Wherein h is a shoulder height, and C1, C2 are dual positive clearance of the present invention.
Fig. 3 is an experiment mould assembling schematic diagram of the present invention.1 is die shoe, and 2 is guide pillar, and 3 is drift, and 4 is punch retainer, and 5 is guide pin bushing, and 6 is upper bolster, and 7 is screw, and 8 is die shank, and 9 is pressure sensor, and 10 is material, and 11 is stripper, and 12 is die.
Fig. 4 is a common stamping spare sectional schematic diagram.1 is the angle of collapsing, and 2 is shear surface, and 3 is the plane of disruption, and 4 is burr.
Fig. 5 is two towards positive clearance blanking spare sectional schematic diagram for the present invention.1 is the angle of collapsing, and 2 is shear surface, and 3 is the plane of disruption, and 4 is burr.
The specific embodiment
The present invention will be described further by following examples.
Present embodiment is the punching in the method for the invention, promptly makes a continuous step drift, makes between itself and the die and forms dual positive clearance (C1 and C2), and accompanying drawing 1 is the punching schematic diagram of present embodiment, and accompanying drawing 5 is the schematic diagram of present embodiment stamping-out section.The material that present embodiment is is 4mm with two kinds of thickness is implemented on the 100KN ordinary press, and diameter of work is φ 20mm.Its process conditions and the results are shown in Table 1.
Table 1 (mm of unit)
| Sequence number | The stamping-out material | The h value | The C1/C2 value | The shear surface height of stamping-out |
| 1 | Pure aluminum plate t=4 | 1.4 | 0.125t/0.02t | 3.0～3.6 |
| 2 | 1.4 | 0.125t/0.02t | 2.9～3.7 | |
| 3 | 2 | 0.15t/0.05t | 2.8～3.5 | |
| 4 | 2 | 0.15t/0.05t | 2.8～3.8 | |
| 5 | Brass sheet t=4 | 1.4 | 0.125t/0.02t | 2.5～3.6 |
| 6 | 1.4 | 0.125t/0.02t | 2.2～3.4 | |
| 7 | 2 | 0.15t/0.05t | 2.3～3.5 | |
| 8 | 2 | 0.15t/0.05t | 2.1～3.4 |
And the common stamping under the identical stamping-out condition (material, material thickness, forcing press), when C got 0.1t, pure aluminum plate shear surface height was less than 1.5mm, and brass sheet shear surface height is less than 1.0mm.
Present embodiment is the blanking in the method for the invention, promptly makes a continuous step die, makes between itself and the drift and forms dual positive clearance (C1 and C2), and accompanying drawing 2 is the blanking schematic diagram of present embodiment, and accompanying drawing 5 is the schematic diagram of present embodiment stamping-out section.The material that present embodiment is is 4mm with two kinds of thickness is implemented on the 100KN ordinary press, and diameter of work is φ 20mm.Its process conditions and the results are shown in Table 2.
Table 2 (mm of unit)
| Sequence number | The stamping-out material | The h value | The C1/C2 value | The shear surface height of stamping-out |
| 1 | Pure aluminum plate t=4 | 1.4 | 0.125t/0.02t | 2.8～3.5 |
| 2 | 1.4 | 0.125t/0.02t | 2.7～3.7 | |
| 3 | 2 | 0.15t/0.05t | 2.6～3.4 | |
| 4 | 2 | 0.15t/0.05t | 2.5～3.3 | |
| 5 | Brass sheet t=4 | 1.4 | 0.125t/0.02t | 2.4～3.6 |
| 6 | 1.4 | 0.125t/0.02t | 2.5～3.6 | |
| 7 | 2 | 0.15t/0.05t | 2.2～3.5 | |
| 8 | 2 | 0.15t/0.05t | 2.3～3.6 |
And the common stamping under the identical stamping-out condition (material, material thickness, forcing press), when C got 0.1t, pure aluminum plate shear surface height was less than 1.5mm, and brass sheet shear surface height is less than 1.0mm.
Present embodiment is the punching in the method for the invention, promptly makes a continuous step drift, makes between itself and the die and forms dual positive clearance (C1 and C2), and accompanying drawing 1 is the punching schematic diagram of present embodiment, and accompanying drawing 5 is the schematic diagram of present embodiment stamping-out section.The material that present embodiment is is 6mm with two kinds of thickness is implemented on the 250KN ordinary press, and diameter of work is φ 20mm.Its process conditions and the results are shown in Table 3.
Table 3 (mm of unit)
| Sequence number | The stamping-out material | The h value | The C1/C2 value | The shear surface height of stamping-out |
| 1 | Pure aluminum plate t=6 | 2 | 0.125t/0.02t | 4.5～5.7 |
| 2 | 2 | 0.125t/0.02t | 4.3～5.7 | |
| 3 | 3 | 0.15t/0.05t | 4.4～5.6 | |
| 4 | 3 | 0.15t/0.05t | 4.2～5.5 | |
| 5 | Brass sheet t=6 | 2 | 0.125t/0.02t | 3.6～5.7 |
| 6 | 2 | 0.125t/0.02t | 3.8～5.6 | |
| 7 | 3 | 0.15t/0.05t | 3.5～5.5 | |
| 8 | 3 | 0.15t/0.05t | 3.6～5.4 |
And the common stamping under the identical stamping-out condition (material, material thickness, forcing press), when C got 0.1t, pure aluminum plate shear surface height was less than 2.5mm, and brass sheet shear surface height is less than 1.5mm.
Present embodiment is the blanking in the method for the invention, promptly makes a continuous step die, makes between itself and the drift and forms dual positive clearance (C1 and C2), and accompanying drawing 2 is the blanking schematic diagram of present embodiment, and accompanying drawing 5 is the schematic diagram of present embodiment stamping-out section.The material that present embodiment is is 6mm with two kinds of thickness is implemented on the 250KN ordinary press, and diameter of work is φ 20mm.Its process conditions and the results are shown in Table 4.
Table 4 (mm of unit)
| Sequence number | The stamping-out material | The h value | The C1/C2 value | The shear surface height of stamping-out |
| 1 | Pure aluminum plate t=6 | 2 | 0.125t/0.02t | 4.5～5.6 |
| 2 | 2 | 0.125t/0.02t | 5.0～5.8 | |
| 3 | 3 | 0.15t/0.05t | 4.2～5.6 | |
| 4 | 3 | 0.15t/0.05t | 4.4～5.5 | |
| 5 | Brass sheet t=6 | 2 | 0.125t/0.02t | 3.8～5.6 |
| 6 | 2 | 0.125t/0.02t | 3.6～5.7 | |
| 7 | 3 | 0.15t/0.05t | 3.7～5.6 | |
| 8 | 3 | 0.15t/0.05t | 3.5～5.9 |
And the common stamping under the identical stamping-out condition (material, material thickness, forcing press), when C got 0.1t, pure aluminum plate shear surface height was less than 2.5mm, and brass sheet shear surface height is less than 1.5mm.
Embodiment 5.
Present embodiment is punching part (the Automobile steel ring spoke is towards the macropore) stamping-out in the method for the invention, promptly make a continuous step drift, make between itself and the die and form dual positive clearance (C1 and C2), accompanying drawing 1 is the schematic diagram of present embodiment step drift, and accompanying drawing 5 is the schematic diagram of present embodiment stamping-out section.The blanking part of present embodiment is the thick SPAH of 6mm (steel plate), implements on the common straight side press of 4000KN, and diameter of work is φ 140mm.Its process conditions and the results are shown in Table 5.
Table 5 (mm of unit)
| The stamping-out material | The h value | The C1/C2 value | The shear surface height of double gap stamping-out |
| SPAH (steel plate) t=6 | 3 | 0.15/0.06t | 3.2～5.6 |
| 0.15/0.06t | 3.1～5.7 | ||
| 0.20/0.10t | 3.1～3.5 | ||
| 0.20/0.10t | 3.2～3.4 |
And the common stamping under the identical stamping-out condition (material, material thickness, forcing press), when C got 0.2t, the shear surface height was less than 1.5mm.
Claims (1)
- A kind of dual positive clearance blanking method, drift or die in the one secondary mould are made into continuous step, the height h that it is characterized in that step gets 1/3～1/2 of the thick t of blanking part material, form dual positive clearance between drift and the die, clearance C 1=(0.125～0.20) t, clearance C 2=(0.02～0.10) t.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510126576 CN1775406A (en) | 2005-11-30 | 2005-11-30 | Dual positive clearance blanking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510126576 CN1775406A (en) | 2005-11-30 | 2005-11-30 | Dual positive clearance blanking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1775406A true CN1775406A (en) | 2006-05-24 |
Family
ID=36765193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510126576 Pending CN1775406A (en) | 2005-11-30 | 2005-11-30 | Dual positive clearance blanking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1775406A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264092A (en) * | 2013-05-15 | 2013-08-28 | 昆山电子羽电业制品有限公司 | Punching blanking die |
| CN104148506A (en) * | 2014-08-19 | 2014-11-19 | 中山复盛机电有限公司 | Progressive die capable of eliminating wave deformation generated in stamping process of sheet metal |
| CN107597947A (en) * | 2017-10-26 | 2018-01-19 | 成都宏明双新科技股份有限公司 | A kind of impact forming method for improving thick material product euphotic belt |
| CN108213172A (en) * | 2017-12-27 | 2018-06-29 | 北京有色金属研究总院 | A kind of blanking method of inductile silumin band |
-
2005
- 2005-11-30 CN CN 200510126576 patent/CN1775406A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264092A (en) * | 2013-05-15 | 2013-08-28 | 昆山电子羽电业制品有限公司 | Punching blanking die |
| CN104148506A (en) * | 2014-08-19 | 2014-11-19 | 中山复盛机电有限公司 | Progressive die capable of eliminating wave deformation generated in stamping process of sheet metal |
| CN104148506B (en) * | 2014-08-19 | 2016-01-20 | 中山复盛机电有限公司 | A kind of progressive die eliminating stamped metal thin plate generation wave transformation |
| CN107597947A (en) * | 2017-10-26 | 2018-01-19 | 成都宏明双新科技股份有限公司 | A kind of impact forming method for improving thick material product euphotic belt |
| CN108213172A (en) * | 2017-12-27 | 2018-06-29 | 北京有色金属研究总院 | A kind of blanking method of inductile silumin band |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202447510U (en) | Stamping compound die for dustproof covers of bearings | |
| US20080098788A1 (en) | Pressing Machine, Pressing Method, and Punched Article | |
| CN103182421B (en) | A kind of wheel cover of automobile part production line | |
| CN1931469A (en) | Precise multifunctional incremental pressing die and its making process | |
| CN1733384A (en) | Punching-pressing composite mould | |
| CN1775406A (en) | Dual positive clearance blanking method | |
| CN103212620A (en) | Burr-free blanking method and blanking system | |
| CN1672830A (en) | Metal plate punching process | |
| CN106825194A (en) | Crowded formula is cut without gear ring fine device and method | |
| CN102527815A (en) | Fine trimming continuous stamping process | |
| US4800745A (en) | Spur gear automatic production process | |
| CN1273238C (en) | Cylindric push-cutting and edging composite tool for cutting and punching | |
| CN1381318A (en) | Precise punch technology for manufacturing circular or sectorial gear | |
| CN1225323C (en) | Two stage punching process with stage feed die | |
| JP7336737B2 (en) | Manufacturing method of inner and outer rings by hot former | |
| CN101058141A (en) | Method for manufacturing sleeve | |
| CN114523031A (en) | Cutting part burr-free processing technology and product thereof | |
| CN210632727U (en) | Shallow end path thin wall drawing piece side groove mold processing | |
| SU884796A1 (en) | Die for drawing and trimming | |
| CN207914393U (en) | A kind of fine blanking die of punch-die and cavity plate | |
| CN205436791U (en) | Wheel spoke hole extrusion mould | |
| CN204817733U (en) | Mould of continuous punching press U -shaped edge rolling section of thick bamboo of floated mandrel | |
| JPH07214191A (en) | Press die and formation by press | |
| CN201235384Y (en) | Feeding and discharging processing device of electric machine compound mold | |
| CN210280419U (en) | Die structure with filleted corners on front and back surfaces |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |