CN107363161A - A kind of progressive die anti-deformation method - Google Patents
A kind of progressive die anti-deformation method Download PDFInfo
- Publication number
- CN107363161A CN107363161A CN201710721633.5A CN201710721633A CN107363161A CN 107363161 A CN107363161 A CN 107363161A CN 201710721633 A CN201710721633 A CN 201710721633A CN 107363161 A CN107363161 A CN 107363161A
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- China
- Prior art keywords
- section
- circular arc
- cross
- arc chamfering
- punching pin
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention discloses a kind of progressive die anti-deformation method, sets the gap being more than between punching pin cross section flat segments and matrix cavity cross section flat segments to produce internal stress in punching course to cut down stamped metal thin plate using by the maximal clearance between the punching pin cross section circular arc chamfering section of progressive die punching pin and the matrix cavity cross section circular arc chamfering section of cavity plate.The present invention seeks to overcome the deficiencies in the prior art, one kind is provided in the case where ensureing product quality and punching pin intensity, is deformed using the gap between increase progressive die punching pin cross section circular arc chamfering section and matrix cavity cross section circular arc chamfering section effectively to eliminate progressive die stamped metal thin plate.
Description
Technical field
The present invention relates to a kind of cold stamping thin plate technique, more specifically a kind of progressive die anti-deformation method.
Background technology
Large stretch of sheet metal continuous punching product widened is developed one after another with each producer that is growing more intense of market competition, with
The production efficiency of product is improved, lowers the manufacturing cost of product.The sheet metal continuous punching product that sheet is widened, given birth in punching press
Wave transformation problem is easily produced during production, wave transformation problem can have a strong impact on being smoothed out for follow-up production process.Ripple
Unrestrained problem is to perplex a technical barrier of industry.Wave producing cause is analyzed, after new die or grinding mould clip most
Just a period of time, clip, which is in sharper state stamping products, will not produce wave transformation.Mould is cut for a period of time for punching press
After mouth rust, stamping products start to produce wave transformation.The punching face whole section of circular arc chamfering section is rendered as euphotic belt, near
The reason for normal punching section of region flat side section has obvious difference, produces this phenomenon be after punching pin rust with punching press gold
Caused by violent friction is produced between metal thin plate, while very big compression is generated inside stamped metal thin plate.Product produces
During raw wave transformation, observation punching pin finds the flat side of punching pin and abrasion rust all occurs in fillet position, the rounded shape of the edge of a knife,
And fillet position can wear greatly than flat side, abrasion section is about twice of flat side, punching pin cutting edge rust, causes punching press
Each stage tension and compression caused by inside the stamped metal thin plate that is stamped can all be multiplied, and especially compression increases
Add and become apparent.When a punching press release, the anti-work of the compression of the external constraint power Bei Xie Chu ﹐ material internals of product
Product is deformed trend, and when reaction force to a certain extent when, will unstability, so as to form local arch upward i.e.
For wave transformation.In summary, stamped metal light sheet products produce wave transformation the reason for be due to punching pin cutting edge abrasion after
Compression caused by interiors of products, the compression in especially product chamfered section region cause.How to slow down punching pin abrasion is to solve punching
One of pressure sheet metal part wave transformation problem has the abrasion that effect way footpath ﹐ especially slows down punching pin chamfered section region, this Shen
Ask someone to attempt to wish solve the problems, such as stamped metal light sheet products wave transformation using using the following technique Shi proved recipe An ﹐ of design.
The content of the invention
The present invention seeks to overcome the deficiencies in the prior art, there is provided a kind of to ensure the feelings of product quality and punching pin intensity
Under condition, using increase progressive die punching pin cross section circular arc chamfering section and matrix cavity cross section circular arc chamfering section between gap come
Effectively eliminate the method that progressive die stamped metal thin plate produces wave transformation.
A kind of progressive die anti-deformation method, it is characterised in that：Fallen using by the punching pin cross section circular arc of progressive die punching pin 1
Maximal clearance Dmax between angle section 101 and the matrix cavity cross section circular arc chamfering section 201 of cavity plate 2, which is set, is more than punching pin cross section
Clearance D between flat segments 102 and matrix cavity cross section flat segments 202 produces to cut down stamped metal thin plate in punching course
Internal stress, the circular arc chamfering radius Rp of described punching pin cross section circular arc chamfering section 101 are more than described matrix cavity cross circular section
The circular arc chamfering radius Rd of arc chamfering section 201, described punching pin cross section flat segments 102 and matrix cavity cross section flat segments 202
Between clearance D=0.0075mm~0.0085mm, the circular arc chamfering radius Rp of described punching pin cross section circular arc chamfering section 101
=0.09mm~0.105mm, the circular arc chamfering radius Rd=0.075mm of described matrix cavity cross section circular arc chamfering section 201~
0.08mm。
Optionally, the clearance D between described punching pin cross section flat segments 102 and matrix cavity cross section flat segments 202=
0.008mm, the circular arc chamfering radius Rp=0.09mm of described punching pin cross section circular arc chamfering section 101, described matrix cavity are horizontal
The circular arc chamfering radius Rd=0.08mm of section circular arc chamfering section 201.
Optionally, the circular arc chamfering radius Rp=0.095mm of described punching pin cross section circular arc chamfering section 101.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, with reference to embodiment
The present invention is further detailed explanation.
A kind of progressive die anti-deformation method, using by the punching pin cross section circular arc chamfering section 101 of progressive die punching pin 1 with it is recessed
Maximal clearance Dmax between the matrix cavity cross section circular arc chamfering section 201 of mould 2 set be more than punching pin cross section flat segments 102 with
Clearance D between matrix cavity cross section flat segments 202 produces internal stress to cut down stamped metal thin plate in punching course.Gap
It must control in certain limit, gap is too small easily to produce internal stress, and gap is excessive easily to produce burr.Punching pin cross section circular arc falls
The circular arc chamfering radius Rp of angle section 101 is more than the circular arc chamfering radius Rd of described matrix cavity cross section circular arc chamfering section 201.Punching
Clearance D=0.0075mm~0.0085mm between sub- cross section flat segments 102 and matrix cavity cross section flat segments 202, it is described
Punching pin cross section circular arc chamfering section circular arc chamfering radius Rp=0.09mm~0.105mm, described matrix cavity cross circular section
Circular arc chamfering radius Rd=0.075mm~0.08mm of arc chamfering section.Product quality is can guarantee that in above-mentioned number range, is disappeared
Except wave transformation.Gap between punching pin cross section flat segments 102 and matrix cavity cross section flat segments 202 is preferably D=
0.008mm, the circular arc chamfering radius of described punching pin cross section circular arc chamfering section 101 is preferably Rp=0.09mm, and described is recessed
The circular arc chamfering radius of die cavity cross section circular arc chamfering section 201 is preferably Rd=0.08mm.Now, punching pin cross section circular arc chamfering
Maximal clearance Dmax=0.015mm between section 101 and matrix cavity cross section circular arc chamfering section 201, product fillet position is compared
Angle band is collapsed relatively in flat side position, and euphotic belt is wider, and wave transformation substantially eliminates, and burr is in management and control specification limit.Punching
The circular arc chamfering radius Rp=0.095mm of sub- cross section circular arc chamfering section 101.Now, punching pin cross section circular arc chamfering section 101 with
Flat side position is compared in maximal clearance Dmax=0.018mm between matrix cavity cross section circular arc chamfering 201, product fillet position
Angle band collapse relatively, also relatively, wave transformation eliminates euphotic belt, and burr is in management and control specification limit, and this value effect is most
It is good.The circular arc chamfering radius Rp=0.1mm of punching pin cross section circular arc chamfering section 101.Now, punching pin cross section circular arc chamfering section
Maximal clearance Dmax=0.02mm between 101 and matrix cavity cross section circular arc chamfering section 201, product fillet position is compared to straight
Angle band is collapsed relatively in side position, and also relatively, burr is in management and control specification limit, but burr is slightly larger for euphotic belt.Punching pin is horizontal
The circular arc chamfering radius Rp=0.105mm of section circular arc chamfering section 101.Now, punching pin cross section circular arc chamfering section 101 and cavity plate
Maximal clearance Dmax=0.022mm between chamber cross section circular arc chamfering section 201, product fillet position are collapsed compared to flat side position
Relatively, also relatively, wave transformation eliminates euphotic belt angle band, and burr is in management and control specification limit, but burr is slightly larger.
The embodiment of the present invention is described in detail above, specific case used herein to the principle of the present invention and
Embodiment is set forth, and the explanation of above example is only intended to help the method and its core concept for understanding the present invention；
Meanwhile for those of ordinary skill in the art, according to the thought of the present invention, can in specific embodiments and applications
There is change part, in summary, this specification content should not be construed as limiting the invention.
Claims (3)
- A kind of 1. progressive die anti-deformation method, it is characterised in that：Fallen using by the punching pin cross section circular arc of progressive die punching pin (1) Maximal clearance Dmax between angle section (101) and the matrix cavity cross section circular arc chamfering section (201) of cavity plate (2), which is set, is more than punching pin Clearance D between cross section flat segments (102) and matrix cavity cross section flat segments (202) cuts down stamped metal thin plate in punching press During produce internal stress, the circular arc chamfering radius Rp of described punching pin cross section circular arc chamfering section (101) is more than described recessed The circular arc chamfering radius Rd of die cavity cross section circular arc chamfering section (201), described punching pin cross section flat segments (102) and matrix cavity Clearance D=0.0075mm~0.0085mm between cross section flat segments (202), described punching pin cross section circular arc chamfering section (101) circular arc chamfering radius Rp=0.09mm~0.105mm, the circle of described matrix cavity cross section circular arc chamfering section (201) Arc chamfer radius Rd=0.075mm~0.08mm.
- A kind of 2. progressive die anti-deformation method according to claim 1, it is characterised in that：Described punching pin cross section is straight Clearance D=0.008mm between section (102) and matrix cavity cross section flat segments (202), described punching pin cross section circular arc chamfering The circular arc chamfering radius Rp=0.09mm of section (101), the circular arc chamfering half of described matrix cavity cross section circular arc chamfering section (201) Footpath Rd=0.08mm.
- A kind of 3. progressive die anti-deformation method according to claim 1, it is characterised in that：Described punching pin cross section circular arc The circular arc chamfering radius Rp=0.095mm of chamfering section (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721633.5A CN107363161A (en) | 2017-08-22 | 2017-08-22 | A kind of progressive die anti-deformation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721633.5A CN107363161A (en) | 2017-08-22 | 2017-08-22 | A kind of progressive die anti-deformation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107363161A true CN107363161A (en) | 2017-11-21 |
Family
ID=60309096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710721633.5A Withdrawn CN107363161A (en) | 2017-08-22 | 2017-08-22 | A kind of progressive die anti-deformation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107363161A (en) |
-
2017
- 2017-08-22 CN CN201710721633.5A patent/CN107363161A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171121 |