CN102527815A - Fine trimming continuous stamping process - Google Patents
Fine trimming continuous stamping process Download PDFInfo
- Publication number
- CN102527815A CN102527815A CN2011104585114A CN201110458511A CN102527815A CN 102527815 A CN102527815 A CN 102527815A CN 2011104585114 A CN2011104585114 A CN 2011104585114A CN 201110458511 A CN201110458511 A CN 201110458511A CN 102527815 A CN102527815 A CN 102527815A
- Authority
- CN
- China
- Prior art keywords
- strip
- workpiece
- die
- extruding
- negative clearance
- 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
- Punching Or Piercing (AREA)
Abstract
The invention relates to a fine trimming continuous stamping process. The process comprises a punch above a strip to be machined and a cavity die below the strip, and the punch and the cavity die are matched for extruding and die cutting the strip. The process is characterized by comprising the steps of: (1) negative clearance extruding: downwards stamping and extruding the strip to be machined by the punch of which the diameter is greater than that of the cavity die, i.e. the punch and the cavity die have a negative clearance in between, and the extruding degree of negative clearance extruding is that the upper surface of the strip descends for 50-85% of the strip thickness; (2) feature machining: performing feature machining such as punching and chamfering on the workpiece still connected with the strip machined in the step (1); and (3) cutting off and blanking: die cutting the outer diameter of each workpiece where the workpiece is, cutting off the connecting part between the workpiece and the strip, and blanking the workpiece. The process provided by the invention adopts the negative clearance extrusion technique, the obtained workpiece section has a wider bright zone, the lower part of the section has few or even no burr, the section quality is high, and manual burring and fine trimming are not needed, thus simplifying the process, saving manpower and improving the working efficiency.
Description
Technical field
The present invention relates to a kind of refine limit continuous stamping process, relate in particular to a kind of refine limit continuous stamping process that adopts the negative clearance extruding.
Background technology
In the Sheet Metal Forming Technology, punching with die-cut all are a kind of Sheet Metal Forming Technology methods of utilizing upper and lower mould that strip is separated.Strip is separated into two parts, promptly dashes part and part with holes, is to dash part for what produce certain appearance profile and size as if purpose, and then this operation is called the blanking operation, and remaining part with holes is a waste material; Otherwise, if purpose is in order to produce the endoporus of definite shape and size, at this moment, dashes partly and become waste material, part with holes is workpiece, and this operation is called the punching operation.In traditional continuous stamping process, the diameter of drift is less than the die diameter, and drift pushes strip downwards and stretches into die together with strip, has positive gap between drift and die.When adopting the punching of this kind technology, Punching Technology, strip receives the active force of upper die and lower die end face, can experience three phases: be respectively that strain, plastic deformation and fracture separate.Gained workpiece section can be divided into the fillet band from top to bottom, euphotic belt, fracture belt and burr.Burr is usually located at the section bottom, influences workpiece cross section quality and attractive in appearance, for the high cut deal stamping-out workpiece of quality requirement, reaches the refine limit when traditional handicraft is difficult in stamping-out, needs artificial removal's burr behind the stamping-out, has to a certain degree reduced operating efficiency.
Summary of the invention
The present invention has overcome the deficiency of prior art, provides a kind of technology simple, and the processing cross section quality is high, the refine limit continuous stamping process that burr does not seldom even produce.
For achieving the above object; The technical scheme that the present invention adopts is: refine limit continuous stamping process; The target of said Sheet Metal Forming Technology is the tabular strip; Said technology comprises that the drift of strip top cooperates with the die of strip below and pushes die-cut strip, and the technological forming product is the block workpiece under die-cut from the said strip, and it is characterized in that: the step of said technology is: 1) negative clearance pushes: press strip to be processed with diameter greater than impact extrusion under the drift of said die diameter; Be negative clearance between drift and die, the degree of compression of negative clearance extruding is as the criterion with the thick 50-85% of the descending material of strip upper surface; 2) feature machining: the workpiece that step 1) processing gained still is connected on the strip carries out feature machining, for example punching, chamfering; 3) cut-out, blanking: the die-cut workpiece external diameter at each location of workpiece place, workpiece and strip coupling part are cut off, fall workpiece.
In preferred embodiment of the present invention, comprise that further said negative clearance is squeezed to the thick 75-85% of the descending material of strip upper surface.
In preferred embodiment of the present invention, further comprise said negative clearance be squeezed to the descending material of strip upper surface thick 80%.
In preferred embodiment of the present invention, the punch diameter that further comprises said negative clearance extruding is greater than 2-8% of corresponding female mode diameter.
In preferred embodiment of the present invention, the punch diameter that further comprises said negative clearance extruding is greater than 5% of corresponding female mode diameter.
The invention solves the defective that exists in the background technology, process using negative clearance extrusion technique of the present invention, gained workpiece section euphotic belt broad; Section bottom burr is few even do not have burr, and cross section quality is high, need not artificial deburring refine limit; Simplify technology, save manpower, increase work efficiency.Adopt technology of the present invention, obtain few burr or carrot-free workpiece easily, the requirement of treating rapidoprint is low relatively, and the scope of application is wider.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the vertical view of strip in the preferred embodiment of refine of the present invention limit continuous stamping process;
Fig. 2 is the enlarged diagram of part shown in Figure 1;
Fig. 3 is the front view of strip in the preferred embodiment of refine of the present invention limit continuous stamping process;
Fig. 4 is the enlarged diagram of part shown in Figure 3;
Among the figure: 2, cut deal strip, 4, the workpiece finished product, 41, workpiece finished product external diameter, 6, negative clearance extruding back gained workpiece, 8, the workpiece and the strip coupling part of negative clearance extruding back gained, 10, groove.
The specific embodiment
Combine accompanying drawing and embodiment that the present invention is done further detailed explanation now, these accompanying drawings are the sketch map of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
Shown in Fig. 1-4; Refine of the present invention limit continuous stamping process; The target of said Sheet Metal Forming Technology is middle flat plates shape strip 2; Said technology comprises that the drift of strip top cooperates with the die of strip below and pushes die-cut strip 2, and the technological forming product is the block workpiece 4 under die-cut from the said strip 2.The concrete steps of said technology are: one, negative clearance extruding: press strip 2 to be processed greater than impact extrusion under the drift of said die diameter with diameter; It is negative clearance between drift and die; The degree of compression of negative clearance extruding is as the criterion with the thick 75-85% of the descending material of strip 2 upper surfaces; Preferred 80%, the die diameter equals workpiece finished product 4 external diameters 41; Two, feature machining: the workpiece 6 that step 1 processing gained still is connected on the strip 2 carries out the further feature processing beyond the profile section, for example punching, chamfering; Three, cut-out and blanking: the die-cut workpiece external diameter 41 at each location of workpiece place, promptly use the workpiece 6 and strip 2 coupling parts, 8 cut-outs that negative clearance are pushed the back gained with the drift of workpiece finished product external diameter and die equal diameters instead, fall workpiece, promptly get workpiece finished product 4.The punch diameter of said negative clearance extruding is preferably 5% greater than 2-10% of corresponding female mode diameter.
Add man-hour, treat that die-cut cut deal places between the drift and corresponding die of step 1 because punch diameter is greater than the die diameter, under the drift towards the time cut deal bottom at workpiece to be processed place is pressed into die, form workpiece external diameter 41; Drift itself can't get into die, and only herein cut deal upper surface extrudes the groove 10 that equals punch diameter, and the degree of depth of extruding is advisable with the 75-85% of cut deal upper surface decline original gauge here.Because processing work place cut deal receives the negative clearance extruding, be pressed into part 8 sclerosis that link to each other of workpiece with the cut deal of die, become fragile, carry out the die-cut of step 3 and can cut off easily, fall workpiece 4, and the workpiece cross section quality is high, burr is few.If preferably be squeezed to 80% of processing work place cut deal upper surface decline original gauge; Punch diameter is greater than 5% of the corresponding female mode diameter; The said workpiece part 8 that links to each other with plate is flimsy, even available have gentle hands pine breaks off with the fingers and thumb disconnectedly, and the die-cut back workpiece section burr that cuts off can expect thick 0.3% less than former; 5%-8% far below traditional handicraft processing reaches no burr rank.Because technology of the present invention obtains the few or carrot-free workpiece of burr easily, can be lower for the requirement of rapidoprint, for example process the workpiece finished product that ordinary low-carbon steel also can obtain not have burr refine limit.
Above foundation desirable embodiment of the present invention is enlightenment, and through above-mentioned description, the related personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must confirm technical scope according to the claim scope.
Claims (5)
1. refine limit continuous stamping process; The target of said Sheet Metal Forming Technology is the tabular strip; Said technology comprises that the drift of strip top cooperates the die-cut strip of extruding with the die of strip below; The technological forming product is the block workpiece under die-cut from the said strip, and it is characterized in that: the step of said technology is:
1) negative clearance extruding: press strip to be processed with diameter greater than impact extrusion under the drift of said die diameter, i.e. negative clearance between drift and die, the degree of compression of negative clearance extruding is as the criterion with the thick 50-85% of the descending material of strip upper surface;
2) feature machining: the workpiece that step 1) processing gained still is connected on the strip carries out feature machining, for example punching, chamfering;
3) cut-out, blanking: the die-cut workpiece external diameter at each location of workpiece place, workpiece and strip coupling part are cut off, fall workpiece.
2. refine according to claim 1 limit continuous stamping process is characterized in that: said negative clearance is squeezed to the thick 75-85% of the descending material of strip upper surface.
3. refine according to claim 2 limit continuous stamping process is characterized in that: said negative clearance be squeezed to the descending material of strip upper surface thick 80%.
4. refine according to claim 3 limit continuous stamping process is characterized in that: the punch diameter of said negative clearance extruding is greater than 2-8% of corresponding female mode diameter.
5. refine according to claim 4 limit continuous stamping process is characterized in that: the punch diameter of said negative clearance extruding is greater than 5% of corresponding female mode diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104585114A CN102527815A (en) | 2011-12-31 | 2011-12-31 | Fine trimming continuous stamping process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104585114A CN102527815A (en) | 2011-12-31 | 2011-12-31 | Fine trimming continuous stamping process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102527815A true CN102527815A (en) | 2012-07-04 |
Family
ID=46336540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104585114A Pending CN102527815A (en) | 2011-12-31 | 2011-12-31 | Fine trimming continuous stamping process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102527815A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081077A (en) * | 2014-05-04 | 2015-11-25 | 嘉兴和新精冲科技有限公司 | Chamfering stamping punch and burr-free stamping technology |
| WO2016061708A1 (en) * | 2014-10-21 | 2016-04-28 | Cheng-Ping Wang | Fine extru-cutting forming machine |
| CN108712936A (en) * | 2016-02-08 | 2018-10-26 | 新日铁住金株式会社 | Shearing method |
| CN111515074A (en) * | 2020-04-20 | 2020-08-11 | 深圳市满分爱科技有限公司 | Processing method of microporous atomization sheet |
| CN112642928A (en) * | 2020-12-04 | 2021-04-13 | 东莞市新美洋技术有限公司 | Flange edge cutting method and cutting equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07148700A (en) * | 1993-11-26 | 1995-06-13 | Nissan Motor Co Ltd | Shearing working method without burr |
| CN1367520A (en) * | 2000-06-22 | 2002-09-04 | 株式会社日立制作所 | Planar electrode of cathode-ray tube and electronic gun and its production method |
| CN101107086A (en) * | 2005-01-25 | 2008-01-16 | 爱信艾达株式会社 | Pressing mechine, pressing method, and punched article |
| CN101402124A (en) * | 2007-10-03 | 2009-04-08 | 株式会社电装 | Method of manufacturing gear from metal sheet and the gear manufactured by the method |
| CN101444807A (en) * | 2009-01-04 | 2009-06-03 | 戴赞荣 | Stepping coordinated thin-plate fine blanking method |
| CN201768799U (en) * | 2010-07-06 | 2011-03-23 | 亿和精密金属制品(深圳)有限公司 | Device for synchronous scrap blanking and deburring by progressive die |
| CN102145357A (en) * | 2010-11-20 | 2011-08-10 | 苏州旭创精密模具有限公司 | Production method of fine punching part and fine punching die |
-
2011
- 2011-12-31 CN CN2011104585114A patent/CN102527815A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07148700A (en) * | 1993-11-26 | 1995-06-13 | Nissan Motor Co Ltd | Shearing working method without burr |
| CN1367520A (en) * | 2000-06-22 | 2002-09-04 | 株式会社日立制作所 | Planar electrode of cathode-ray tube and electronic gun and its production method |
| CN101107086A (en) * | 2005-01-25 | 2008-01-16 | 爱信艾达株式会社 | Pressing mechine, pressing method, and punched article |
| CN101402124A (en) * | 2007-10-03 | 2009-04-08 | 株式会社电装 | Method of manufacturing gear from metal sheet and the gear manufactured by the method |
| CN101444807A (en) * | 2009-01-04 | 2009-06-03 | 戴赞荣 | Stepping coordinated thin-plate fine blanking method |
| CN201768799U (en) * | 2010-07-06 | 2011-03-23 | 亿和精密金属制品(深圳)有限公司 | Device for synchronous scrap blanking and deburring by progressive die |
| CN102145357A (en) * | 2010-11-20 | 2011-08-10 | 苏州旭创精密模具有限公司 | Production method of fine punching part and fine punching die |
Non-Patent Citations (1)
| Title |
|---|
| 李建华等: "铝板负间隙冲裁力与间隙的研究", 《锻压装备与制造技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081077A (en) * | 2014-05-04 | 2015-11-25 | 嘉兴和新精冲科技有限公司 | Chamfering stamping punch and burr-free stamping technology |
| WO2016061708A1 (en) * | 2014-10-21 | 2016-04-28 | Cheng-Ping Wang | Fine extru-cutting forming machine |
| CN108712936A (en) * | 2016-02-08 | 2018-10-26 | 新日铁住金株式会社 | Shearing method |
| CN108712936B (en) * | 2016-02-08 | 2020-02-21 | 日本制铁株式会社 | Shearing method |
| CN111515074A (en) * | 2020-04-20 | 2020-08-11 | 深圳市满分爱科技有限公司 | Processing method of microporous atomization sheet |
| CN112642928A (en) * | 2020-12-04 | 2021-04-13 | 东莞市新美洋技术有限公司 | Flange edge cutting method and cutting equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101107086B (en) | Pressing mechine, pressing method, and punched article | |
| CN103212620B (en) | Impulse-free robustness blanking method and stamping-out system | |
| CN102527815A (en) | Fine trimming continuous stamping process | |
| CN201997606U (en) | Punching and blanking die of engine timing chain plate | |
| CN103521598B (en) | Deburring waste knife and Trimming Die | |
| CN204700162U (en) | A kind of no waste mine stock layout Die structure progressive die | |
| CN106825194A (en) | Crowded formula is cut without gear ring fine device and method | |
| CN114523031B (en) | Processing technology for cutting part without burr and product thereof | |
| CN202667435U (en) | Continuous processing die for web plates | |
| CN206567388U (en) | Punching removes the mould of flash removed simultaneously | |
| CN203470612U (en) | Compensation shearing die for punching plate | |
| CN205966954U (en) | Bright and clean blanking mould of precision parts | |
| CN203526311U (en) | Novel solid-round-steel pipe cutting mold | |
| CN206632192U (en) | A kind of pre- stamping knife head and blanking apparatus and tablet | |
| CN105855357A (en) | One-time forming die for manufacturing channel tie | |
| CN106111781A (en) | Channel tie manufactures one-time-shaped mould | |
| CN205763388U (en) | A kind of isolating construction of the body hinge progressive die | |
| CN204724675U (en) | One-mold multiple-member blanking die | |
| CN205341624U (en) | Stamping die's positive top -cross sword structure | |
| CN204353282U (en) | Taper work blanking die | |
| CN205436791U (en) | Wheel spoke hole extrusion mould | |
| CN109692909A (en) | A kind of preparation process of connector fish forked terminal | |
| CN218425125U (en) | Reduce thick plate tapping screw tap rupture structure | |
| CN208555617U (en) | A kind of mold reducing punching noise | |
| CN207914393U (en) | A kind of fine blanking die of punch-die and cavity plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120704 |