CN104842584B - A kind of automatic adaptation cushion cylinder stamping-out way to play for time - Google Patents
A kind of automatic adaptation cushion cylinder stamping-out way to play for time Download PDFInfo
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- CN104842584B CN104842584B CN201510217759.XA CN201510217759A CN104842584B CN 104842584 B CN104842584 B CN 104842584B CN 201510217759 A CN201510217759 A CN 201510217759A CN 104842584 B CN104842584 B CN 104842584B
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- stamping
- blanking pressure
- cushion
- setting value
- pressure
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- 230000006978 adaptation Effects 0.000 title claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 42
- 238000004080 punching Methods 0.000 claims description 8
- 230000001052 transient effect Effects 0.000 claims description 7
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 abstract description 11
- 230000005764 inhibitory process Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
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Abstract
The invention discloses a kind of automatic adaptation cushion cylinder stamping-out way to play for time, relate to hydralic stamping press stamping-out buffering field. Be difficult to accurately hold buffer position for traditional cushion dashpot stamping-out buffering, propose new automatic adaptation cushion cylinder stamping-out way to play for time, before plate reaches maximum blanking pressure, make punch support contact cushion dashpot, cushion dashpot is carried out to precommpression, as cushion dashpot active force (Fc) and blanking pressure (Fb) sum reaches setting value (F0), by keeping working cylinder active force to remain on setting value (F0) realize the Changing Pattern that cushion effect adapts to blanking pressure automatically. Plate Crack Extension while starting to rupture, blanking pressure (Fb) reduce rapidly cushion effect (Fc) increase rapidly, working cylinder promotes cushion dashpot deceleration and moves down, and completes self adaptation stamping-out buffering.
Description
Technical field
The present invention relates to a kind of automatic adaptation cushion cylinder stamping-out way to play for time, related to a kind of hydralic stamping press stamping-out buffering neckTerritory, particularly cushion dashpot stamping-out buffering field. Solve traditional cushion dashpot stamping-out buffering and be difficult to accurately hold buffer position, carriedThe automatic adaptation cushion cylinder stamping-out way to play for time making new advances.
Background technology
For stamping machine transient state load-missing, there are at present two kinds of methods of active damping and passive buffering, mainly with passive slowHydraulic cylinder in punching buffering is main, major part be plate fracture moment or before certain moment apply 50% ~ 60% nominal masterpieceFor cushion effect. Due to buffer position control inaccuracy, if cushioned, still can produce collision impact after plate fracture, transition is notSteadily enough; Buffering can produce again larger additional load too early, causes power dissipation, and makes general stamping-out tonnage less than hydraulic press60% of nominal pressure, can not reach fully loaded work far away, has seriously undermined the service behaviour of hydralic stamping press. As patent applicationThe realization of the way to play for time of mentioning in 201010580780.3, need to accurately arrange the position of cushion dashpot. Thereby urgent need one hasThe self adaptation stamping-out way to play for time of effect.
Summary of the invention
Be difficult to accurately hold buffer position in order to solve traditional cushion dashpot stamping-out buffering, the invention provides a kind of self-adapting slowlyRush cylinder stamping-out way to play for time. Automatic adaptation cushion cylinder stamping-out way to play for time, is difficult to accurate assurance for traditional cushion dashpot stamping-out bufferingThe problem of buffer position, proposes new self-adapting slowly punching method and carries out related device design.
A kind of automatic adaptation cushion cylinder stamping-out way to play for time, comprises the following steps:
Step 1: slide block idle running is descending, is about to reduce speed now before contact plate, makes punch with tens millimeters of constant speed per secondDegree starts punching press plate;
Step 2: when punch contacts plate with constant speed, working cylinder pressure (Fa)=blanking pressure (Fb）；
Step 3: as blanking pressure (Fb) numerical value equal 0.85 and be multiplied by maximum blanking pressure (Fbmax) time, progressively apply cushion effect（Fc), now working cylinder pressure (Fa)=blanking pressure (Fb)+cushion effect (Fc）；
Step 4: get one and be greater than maximum blanking pressure (Fbmax) setting value (F0), as blanking pressure (Fb)+cushion effect (Fc)=establishDefinite value (F0) time, keep setting value (F0) constant;
Step 5: along with punch continue move down, blanking pressure (Fb) increase cushion effect (Fc) reduce, to maximum blanking pressure（Fbmax) when position, cushion effect (Fc) drop to minimum;
Step 6: plate is to maximum blanking pressure (Fbmax) afterwards, crackle starts to produce expansion, blanking pressure (Fb) reduce bufferingPower (Fc) increase, continue to maintain punch stand under load constant, i.e. cushion effect (Fc)=setting value (F0), avoid transient state to lose and carried, last plateMaterial fracture separates, and stamping-out completes.
Described maximum blanking pressure (Fbmax) numerical value be experiment record, described setting value (F0）=1.2Fbmax。
The invention has the beneficial effects as follows:
Before plate fracture, just start buffering, cushion dashpot has the more time to set up cushion effect, makes progressively mistake of technique loadCross cushion load, avoided impact shock, and when setting value is while approaching maximum blanking pressure, almost tonnage entirely of hydraulic pressCarry out stamping-out.
Detailed description of the invention
Automatic adaptation cushion cylinder stamping-out way to play for time described in the embodiment of the present invention, its key step comprises:
Step 1: slide block idle running is descending, is about to reduce speed now before contact plate, makes punch with tens millimeters of constant speed per secondDegree starts punching press plate.
Step 2: when punch contacts plate with constant speed, working cylinder pressure (Fa)=blanking pressure (Fb）。
Step 3: as blanking pressure (Fb) numerical value equal 0.85 and be multiplied by maximum blanking pressure (Fbmax) time, progressively apply cushion effect（Fc), now working cylinder pressure (Fa)=blanking pressure (Fb)+cushion effect (Fc). Cushion dashpot is connected with oil cylinder by overflow valve.
Step 4: get setting value (F0) equal 1.2 and be multiplied by maximum blanking pressure (Fbmax), as blanking pressure (Fb)+cushion effect (Fc）=Setting value (F0) time, keep setting value (F0) constant. Now cushion dashpot and slide block uniform descending.
Step 5: along with punch continue move down, blanking pressure (Fb) increase, due to blanking pressure (Fb)+cushion effect (Fc)=setValue (F0), therefore cushion effect (Fc) reduce, to maximum blanking pressure (Fbmax) when position, cushion effect (Fc) drop to minimum. Now slowRush cylinder and slide block down Speed Reduction.
Step 6: plate is to maximum blanking pressure (Fbmax) afterwards, crackle starts to produce expansion, blanking pressure (Fb) reduce rapidly,Due to the liquid inhibition effect of overflow valve, cushion effect (Fc) increase rapidly, continue to maintain punch stand under load constant, i.e. cushion effect (Fc)=setValue (F0), to avoid transient state to lose and carried, last plate fracture separates, and stamping-out completes.
Embodiment 1
Taking No. 45 steel plates of 1 millimeters thick as specific embodiment, first slide block idle running is descending, is about to start to subtract before contact plateSpeed, makes punch start punching press plate with 20 millimeters of constant speeds per second. Maximum blanking pressure is 29000N, as blanking pressure (Fb）=When 0.85 × 29000N=24650N, progressively apply cushion effect (Fc). As setting value (F0When)=1.2 × 29000N=34800N, protectHold setting value (F0) constant. Blanking pressure (Fb) increase, cushion dashpot Speed Reduction, cushion effect reduces. Blanking pressure reach 29000N itAfter, crackle starts to produce expansion, blanking pressure (Fb) reduce rapidly, due to the liquid inhibition effect of overflow valve, cushion effect (Fc) increase rapidlyGreatly, continue to maintain punch stand under load constant, i.e. cushion effect (Fc)=setting value (F0)=34800N, has avoided transient state to lose and has carried, last plateFracture separates, and stamping-out completes.
Embodiment 2
Taking 1 millimeter of aluminium alloy as specific embodiment, first slide block idle running is descending, is about to reduce speed now before contact plate, makesPunch starts punching press plate with 20 millimeters of constant speeds per second. Maximum blanking pressure is 6380N, as blanking pressure (Fb）=0.85×When 6380N=5423N, progressively apply cushion effect (Fc). As setting value (F0When)=1.2 × 6380N=7656N, keep setting value（F0) constant. Blanking pressure (Fb) increase, cushion dashpot Speed Reduction, cushion effect reduces. After blanking pressure reaches 6380N, crackle startsProduce expansion, blanking pressure (Fb) reduce rapidly, due to the liquid inhibition effect of overflow valve, cushion effect (Fc) increase rapidly, continue to maintain protrudingMould stand under load is constant, i.e. cushion effect (Fc)=setting value (F0)=7656N, has avoided transient state to lose and has carried, and last plate fracture separates, stamping-outComplete.
Embodiment 3
Taking 1 millimeter of stainless steel as specific embodiment, first slide block idle running is descending, is about to reduce speed now before contact plate, makesPunch starts punching press plate with 20 millimeters of constant speeds per second. Maximum blanking pressure is 30200N, as blanking pressure (Fb）=0.85×When 30200N=25670N, progressively apply cushion effect (Fc). As setting value (F0When)=1.2 × 30200N=36240N, keep settingValue (F0) constant. Blanking pressure (Fb) increase, cushion dashpot Speed Reduction, cushion effect reduces. After blanking pressure reaches 30200N, crackleStart to produce expansion, blanking pressure (Fb) reduce rapidly, due to the liquid inhibition effect of overflow valve, cushion effect (Fc) increase rapidly, continue dimensionHold punch stand under load constant, i.e. cushion effect (Fc)=setting value (F0)=36240N, has avoided transient state to lose and has carried, and last plate fracture separates,Stamping-out completes.
Claims (2)
1. an automatic adaptation cushion cylinder stamping-out way to play for time, is characterized in that, comprises the following steps:
Step 1: slide block idle running is descending, is about to reduce speed now before contact plate, and punch is left with tens millimeters of constant speeds per secondBeginning punching press plate;
Step 2: when punch contacts plate with constant speed, working cylinder pressure (Fa)=blanking pressure (Fb）；
Step 3: as blanking pressure (Fb) numerical value equal 0.85 and be multiplied by maximum blanking pressure (Fbmax) time, progressively apply cushion effect（Fc), now working cylinder pressure (Fa)=blanking pressure (Fb)+cushion effect (Fc）；
Step 4: get one and be greater than maximum blanking pressure (Fbmax) setting value (F0), as blanking pressure (Fb)+cushion effect (Fc)=setting value（F0) time, keep setting value (F0) constant;
Step 5: along with punch continue move down, blanking pressure (Fb) increase cushion effect (Fc) reduce, to maximum blanking pressure (Fbmax）When the position, cushion effect (Fc) drop to minimum;
Step 6: plate is subject to maximum blanking pressure (Fbmax) afterwards, crackle starts to produce expansion, blanking pressure (Fb) reduce cushion effect（Fc) increase, continue to maintain punch stand under load constant, i.e. cushion effect (Fc)=setting value (F0), avoid transient state to lose and carried, last plateFracture separates, and stamping-out completes.
2. a kind of automatic adaptation cushion cylinder stamping-out way to play for time according to claim 1, is characterized in that described maximum stamping-outPower (Fbmax) numerical value be experiment record, described setting value (F0) equal the maximum blanking pressure (F of 1.2 timesbmax）。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217759.XA CN104842584B (en) | 2015-05-04 | 2015-05-04 | A kind of automatic adaptation cushion cylinder stamping-out way to play for time |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217759.XA CN104842584B (en) | 2015-05-04 | 2015-05-04 | A kind of automatic adaptation cushion cylinder stamping-out way to play for time |
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| Publication Number | Publication Date |
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| CN104842584A CN104842584A (en) | 2015-08-19 |
| CN104842584B true CN104842584B (en) | 2016-05-04 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077680A (en) * | 1992-04-17 | 1993-10-27 | 浙江大学 | Punch buffer for press |
| CN101121303A (en) * | 2007-08-10 | 2008-02-13 | 广东工业大学 | Hydraulic press punching active damping control device |
| CN201036916Y (en) * | 2006-12-08 | 2008-03-19 | 合肥锻压机床有限公司 | Pressure automatic tracing perforating and cutting buffer device |
| CN101992563A (en) * | 2010-12-09 | 2011-03-30 | 扬州捷迈锻压机械有限公司 | Top arrangement type accurate mechanical synchronous full-load blanking and buffering device |
| CN202861261U (en) * | 2012-09-11 | 2013-04-10 | 天津市天锻压力机有限公司 | Blank buffering automatic tracking hydraulic machine |
| KR20130118571A (en) * | 2012-04-20 | 2013-10-30 | 삼성전기주식회사 | Pinnacle mold |
| CN104259292A (en) * | 2014-08-01 | 2015-01-07 | 浙江大学 | Quick return type blanking buffer device and hydropress for blanking |
-
2015
- 2015-05-04 CN CN201510217759.XA patent/CN104842584B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077680A (en) * | 1992-04-17 | 1993-10-27 | 浙江大学 | Punch buffer for press |
| CN201036916Y (en) * | 2006-12-08 | 2008-03-19 | 合肥锻压机床有限公司 | Pressure automatic tracing perforating and cutting buffer device |
| CN101121303A (en) * | 2007-08-10 | 2008-02-13 | 广东工业大学 | Hydraulic press punching active damping control device |
| CN101992563A (en) * | 2010-12-09 | 2011-03-30 | 扬州捷迈锻压机械有限公司 | Top arrangement type accurate mechanical synchronous full-load blanking and buffering device |
| KR20130118571A (en) * | 2012-04-20 | 2013-10-30 | 삼성전기주식회사 | Pinnacle mold |
| CN202861261U (en) * | 2012-09-11 | 2013-04-10 | 天津市天锻压力机有限公司 | Blank buffering automatic tracking hydraulic machine |
| CN104259292A (en) * | 2014-08-01 | 2015-01-07 | 浙江大学 | Quick return type blanking buffer device and hydropress for blanking |
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| Publication number | Publication date |
|---|---|
| CN104842584A (en) | 2015-08-19 |
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