CN105034441B - A kind of overload detection method of forcing press - Google Patents
A kind of overload detection method of forcing press Download PDFInfo
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- CN105034441B CN105034441B CN201510445589.0A CN201510445589A CN105034441B CN 105034441 B CN105034441 B CN 105034441B CN 201510445589 A CN201510445589 A CN 201510445589A CN 105034441 B CN105034441 B CN 105034441B
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- press
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- forcing press
- overload
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- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 238000006073 displacement reaction Methods 0.000 claims abstract description 29
- 238000004080 punching Methods 0.000 claims abstract description 25
- 230000000875 corresponding Effects 0.000 claims description 9
- 239000011888 foil Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 208000008425 Protein Deficiency Diseases 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000037250 Clearance Effects 0.000 description 1
- 206010062544 Tooth fracture Diseases 0.000 description 1
- 230000035512 clearance Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The invention discloses the overload detection method of a kind of forcing press, feature is to include load detection mechanism, stroke angles testing agency, stamping press stroke curve drafting module, overload judge module and alarm module, load detection mechanism and stroke angles testing agency electrically connect with stamping press stroke curve drafting module respectively, stamping press stroke curve drafting module electrically connects with overload judge module, and overload judge module electrically connects with alarm module；Advantage is can be detected the stamping press of forcing press in real time by the method, and can automatically draw traveled distance pressure curve, compare with the design runlength pressure curve of forcing press, whether transship in any travel displacement position with real-time judge forcing press, to prevent forcing press from punching press energy deficiency, press machine clutch sliding or toothed drive gear phenomenon of rupture occurring in punching course, improve the service life of forcing press, also eliminate safe hidden trouble simultaneously.
Description
Technical field
The present invention relates to forcing press, particularly relate to the overload detection method of a kind of forcing press.
Background technology
Forcing press application in the middle of modern manufacturing industry field is more and more extensive, and its demand is day by day increased sharply.And the stamping press of forcing press is required all to be not quite similar by different stamping products, and the actual stamping press needed for stamping parts is difficult to calculate accurately, and the punching press tonnage type selecting of forcing press is caused the biggest puzzlement by this.
The most general way is that the geomery of the structure according to diel and stamping parts substantially estimates its required maximum stamping press, then reserves certain safe clearance, and the forcing press matching nominal pressure more some larger than required maximum stamping press carries out punching production.There are some drawbacks in this mode, such as mostly for security consideration, the nominal pressure of forcing press selects excessive, causes unnecessary device resource to waste；And sometimes for reducing the purchase quantity of forcing press, different stamping parts can be placed on same forcing press and produce, this is possible to produce the phenomenon that forcing press transships, and therefore the life-span of forcing press is greatly shortened.
Traditional forcing press overload protective device can only just carry out unloading protecting when actual stamping press is more than the nominal pressure of forcing press; and the feature of exerting oneself of forcing press is slide block at different travel displacement stamping press is different from; generally maximum at bottom dead center-nearby stamping press, bottom dead centre up power is more and more less.Forcing press is when the nominal pressure of bottom dead center-nearby meets the maximum stamping press needed for stamping parts; design pressure at other travel displacement likely can not meet punching press demand; but traditional forcing press overload protection cannot detect, forcing press and mould all can be caused the biggest potential safety hazard by this.And from some forcing presses actually used from the point of view of, its nominal pressure meets the maximum stamping press needed for diel after tested, but the problems such as punching press energy deficiency, press machine clutch sliding, toothed drive gear fracture often occur, the basic reason producing problem above is that forcing press design pressure at certain travel displacement cannot meet the stamping press demand of stamping parts, thus consumed the energy that forcing press stores excessively, cause remainder stroke energy not enough；If certain position stamping press moment is excessive, press machine clutch moment of torsion can be caused not enough, produce sliding phenomenon, the extreme phenomenons such as travelling gear intensity deficiency, tooth fracture, the life-span of serious threat to forcing press occur time more serious.
Summary of the invention
The technical problem to be solved is to provide and a kind of can detect the stamping press of forcing press in real time, and can the overload detection method of forcing press that whether transships of real-time judge forcing press.
The present invention solves the technical scheme that above-mentioned technical problem used: the overload detection method of a kind of forcing press, including load detection mechanism, stroke angles testing agency, stamping press stroke curve drafting module, overload judge module and alarm module, described load detection mechanism and described stroke angles testing agency electrically connect with described stamping press stroke curve drafting module respectively, described stamping press stroke curve drafting module electrically connects with described overload judge module, described overload judge module electrically connects with described alarm module, its overload detection method specifically includes step in detail below:
(1), overload judge module in input pressure machine design runlength displacement and with the design pressure corresponding to travel displacement, then overload judge module is with design runlength displacement as X-coordinate, with design pressure as Y coordinate, draws the design runlength pressure curve of forcing press and preserves；
(2), forcing press is started, stroke angles testing agency detects the travel displacement of press ram in real time, and by the travel displacement position of slide block by predetermined time interval unit transmission to stamping press stroke curve drafting module, the travel displacement position of the slide block received is carried out record storage with X-coordinate numerical value by stamping press stroke curve drafting module；
(3), load detection mechanism detects the actual stamping press that forcing press is born when punching press in real time, and by identical time interval unit, the actual stamping press corresponding with the travel displacement position of slide block is transferred in stamping press stroke curve drafting module, the actual stamping press received is carried out record storage with Y coordinate numerical value by stamping press stroke curve drafting module；
(4), stamping press stroke curve drafting module with the travel displacement position of slide block as X-coordinate, with corresponding actual stamping press as Y coordinate, drafting traveled distance pressure curve also preserves；
(5), traveled distance pressure curve is imported in the same coordinate system with design runlength pressure curve and compares by overload judge module, and judge whether have common factor between two curves, if there being common factor, then control alarm module to give a warning, alarm module transmits a signal to the control system of forcing press self simultaneously, controlling forcing press by control system to quit work, if not occuring simultaneously, then forcing press normally works.
Before described step (2), set in stamping press stroke curve drafting module in advance and need the punching stroke number of times of detection, then before step (5), stamping press stroke curve drafting module is after the numerical value having received a punching stroke, the punching stroke number of times of received punching stroke number of times with setting is compared, if not up to set point number, then repeat step (2), (3), (4), if reaching set point number, then perform step (5), in described step (5), a plurality of traveled distance pressure curve is imported in the same coordinate system by overload judge module one by one with design runlength pressure curve compares；Stamping press stroke curve drafting module, by the detection numerical value of the repeated multiple times actual stamping press receiving forcing press, draws a plurality of traveled distance pressure curve, to guarantee the accuracy rate of detection.
In described step (1), the higher limit of the ratio of design pressure at actual stamping press and same position is set in overload judge module, in described step (5), if traveled distance pressure curve does not occur simultaneously with design runlength pressure curve, then the design pressure at the actual stamping press at each ram travel displaced position and same position is carried out ratio and removes by overload judge module, if ratio is more than the higher limit set, then control alarm module to give a warning, prompting operator, closing presure machine is decided whether by operator, if ratio is not more than the higher limit set, then forcing press normally works；By judging the ratio of design pressure at the actual stamping press of forcing press and same position, can preferably judge the matching degree of the actual stamping press needed for diel and the design pressure of forcing press, when at actual stamping press needed for diel and same position, the ratio of design pressure exceedes higher limit, operator can be reminded in time, avoid using this mould to carry out punching production for a long time, affect the service life of forcing press.
Described load detection mechanism is the foil gauge system being fixedly mounted on forcing press column or is fixedly mounted on the hydraulic pressure detection sensing system on forcing press overload oil pressure protection pipeline.
Described stroke angles testing agency is the stroke angles testing agency that forcing press carries.
Compared with prior art, it is an advantage of the invention that and the stamping press of forcing press can be detected in real time by the method, and can automatically draw traveled distance pressure curve, compare with the design runlength pressure curve of forcing press, whether transship in any travel displacement position with real-time judge forcing press, to prevent forcing press from punching press energy deficiency, press machine clutch sliding or toothed drive gear phenomenon of rupture occurring in punching course, improve the service life of forcing press, also eliminate safe hidden trouble simultaneously.
Accompanying drawing explanation
Fig. 1 is module catenation principle schematic diagram used in the present invention；
Fig. 2 is the schematic flow sheet of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in the figure, a kind of overload detection method of forcing press, the stroke angles testing agency 5 carried including load detection mechanism 1, stamping press stroke curve drafting module 2, overload judge module 3, alarm module 4 and forcing press 6, load detection mechanism 1 and stroke angles testing agency 5 electrically connect with stamping press stroke curve drafting module 2 respectively, stamping press stroke curve drafting module 2 electrically connects with overload judge module 3, overload judge module 3 electrically connects with alarm module 4, and its overload detection method specifically includes step in detail below:
(1), overload judge module 3 in input pressure machine design runlength displacement and with the design pressure corresponding to travel displacement, then overload judge module 3 is with design runlength displacement as X-coordinate, with design pressure as Y coordinate, draw the design runlength pressure curve of forcing press and preserve, in overload judge module 3, setting the higher limit of the ratio of design pressure at actual stamping press and same position simultaneously；
(2) in stamping press stroke curve drafting module 2, set the punching stroke number of times needing to detect in advance；
(3), forcing press is started, stroke angles testing agency 5 detects the travel displacement of press ram in real time, and by the travel displacement position of slide block by predetermined time interval unit transmission to stamping press stroke curve drafting module 2, the travel displacement position of the slide block received is carried out record storage with X-coordinate numerical value by stamping press stroke curve drafting module 2；
(4), load detection mechanism 1 detects the actual stamping press that forcing press 6 is born when punching press in real time, and by identical time interval unit, the actual stamping press corresponding with the travel displacement position of slide block is transferred in stamping press stroke curve drafting module 2, the actual stamping press received is carried out record storage with Y coordinate numerical value by stamping press stroke curve drafting module 2；
(5), stamping press stroke curve drafting module 2 with the travel displacement position of slide block as X-coordinate, with corresponding actual stamping press as Y coordinate, drafting traveled distance pressure curve also preserves；
(6), stamping press stroke curve drafting module 2 is after the numerical value having received a punching stroke, the punching stroke number of times of received punching stroke number of times with setting is compared, if not up to set point number, then repeat step (3), (4), (5), if reaching set point number, then perform step (7)；
(7), a plurality of traveled distance pressure curve is imported in the same coordinate system with design runlength pressure curve and compares by overload judge module 3 one by one, and judge whether have common factor between two curves, if there being common factor, then control alarm module 4 to give a warning, alarm module 4 transmits a signal to the control system of forcing press 6 self simultaneously, controlling forcing press 6 by control system to quit work, if not occuring simultaneously, then performing step (8)；
(8), the design pressure at the actual stamping press at each ram travel displaced position and same position is carried out ratio and removes by overload judge module 3, if ratio is more than the higher limit set, then control alarm module 4 to give a warning, prompting operator, closing presure machine is decided whether by operator, if ratio is not more than the higher limit set, then forcing press 6 normally works.
In above-described embodiment; load detection mechanism 1 can use the foil gauge system being fixedly mounted on forcing press 6 column or be fixedly mounted on the hydraulic pressure detection sensing system that forcing press 6 transships on oil pressure protection pipeline, foil gauge system or hydraulic pressure detection sensing system and all use at present conventional structure.
Claims (4)
1. an overload detection method for forcing press, including load detection mechanism, stroke angles testing agency, stamping press
Stroke curve drafting module, overload judge module and alarm module, described load detection mechanism and described stroke angle
Degree testing agency electrically connects with described stamping press stroke curve drafting module respectively, and described stamping press stroke curve is drawn
Module electrically connects with described overload judge module, and described overload judge module electrically connects with described alarm module, its
Overload detection method specifically includes step in detail below:
(1), overload judge module in input pressure machine design runlength displacement and with the design corresponding to travel displacement
Pressure, then overload judge module is with design runlength displacement as X-coordinate, with design pressure as Y coordinate, draws forcing press
Design runlength pressure curve and preserve；
(2), starting forcing press, stroke angles testing agency detects the travel displacement of press ram in real time, and by slide block
Travel displacement position by predetermined time interval unit transmission to stamping press stroke curve drafting module, stamping press stroke
The travel displacement position of the slide block received is carried out record storage with X-coordinate numerical value by curve plotting module；
(3), load detection mechanism detects the actual stamping press that forcing press is born when punching press, in real time and by time identical
Between spacer unit the actual stamping press corresponding with the travel displacement position of slide block is transferred to stamping press stroke curve draw
In module, the actual stamping press received is carried out record storage with Y coordinate numerical value by stamping press stroke curve drafting module；
(4), stamping press stroke curve drafting module with the travel displacement position of slide block as X-coordinate, with corresponding actual punching
Pressure is Y coordinate, draws traveled distance pressure curve and preserves；
(5), traveled distance pressure curve is imported in the same coordinate system by overload judge module with design runlength pressure curve
Row comparison, and judge whether have common factor between two curves, if there being common factor, then control alarm module and give a warning, simultaneously
Alarm module transmits a signal to the control system of forcing press self, controls forcing press by control system and quits work, if
Do not occur simultaneously, then forcing press normally works；
It is characterized in that before described step (2), setting in stamping press stroke curve drafting module in advance needs
The punching stroke number of times of detection, then before step (5), stamping press stroke curve drafting module is receiving one
After the numerical value of punching stroke, the punching stroke number of times of received punching stroke number of times with setting is compared, if not
Reaching set point number, then repeat step (2), (3), (4), if reaching set point number, then performing step (5), described
Step (5) in, overload judge module by a plurality of traveled distance pressure curve one by one with design runlength pressure curve import
The same coordinate system is compared.
The overload detection method of a kind of forcing press the most as claimed in claim 1, it is characterised in that described step (1)
In, overload judge module sets the higher limit of the ratio of design pressure at actual stamping press and same position, described
In step (5), if traveled distance pressure curve does not occur simultaneously with design runlength pressure curve, then overload judge module will
Design pressure at actual stamping press at each ram travel displaced position and same position carries out ratio and removes, if ratio is more than
The higher limit set, then control alarm module and give a warning, point out operator, operator decide whether closing presure machine,
If ratio is not more than the higher limit set, then forcing press normally works.
The overload detection method of a kind of forcing press the most as claimed in claim 1, it is characterised in that described load detection
Mechanism is the foil gauge system being fixedly mounted on forcing press column or is fixedly mounted on forcing press overload oil pressure protection pipeline
On hydraulic pressure detection sensing system.
The overload detection method of a kind of forcing press the most as claimed in claim 1, it is characterised in that described stroke angles
Testing agency is the stroke angles testing agency that forcing press carries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510445589.0A CN105034441B (en) | 2015-07-27 | 2015-07-27 | A kind of overload detection method of forcing press |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510445589.0A CN105034441B (en) | 2015-07-27 | 2015-07-27 | A kind of overload detection method of forcing press |
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| CN105034441A CN105034441A (en) | 2015-11-11 |
| CN105034441B true CN105034441B (en) | 2016-09-14 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107838225A (en) * | 2017-11-27 | 2018-03-27 | 吕言 | Press tonnage monitoring device, method and press machine system |
| EP3513911B1 (en) * | 2018-01-17 | 2021-06-30 | Von Arx AG | Pressing machine |
| CN110509595A (en) * | 2019-08-07 | 2019-11-29 | 浙江锋源氢能科技有限公司 | A kind of press ram bottom dead center position precision detection system |
| CN110757878B (en) * | 2019-10-31 | 2021-09-28 | 济宁科力光电产业有限责任公司 | Pressure fault detection system and method of servo press |
| CN114523718A (en) * | 2022-04-25 | 2022-05-24 | 南通东昌锻压机床有限公司 | Alarm device for protecting hydraulic machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029320A (en) * | 2012-11-29 | 2013-04-10 | 一重集团大连设计研究院有限公司 | Hydraulic overload protective system capable of setting tonnages and working method thereof |
| CN103231543A (en) * | 2013-05-07 | 2013-08-07 | 重庆市机电设计研究院 | Full-route high-accuracy servo press mounting method |
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2015
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029320A (en) * | 2012-11-29 | 2013-04-10 | 一重集团大连设计研究院有限公司 | Hydraulic overload protective system capable of setting tonnages and working method thereof |
| CN103231543A (en) * | 2013-05-07 | 2013-08-07 | 重庆市机电设计研究院 | Full-route high-accuracy servo press mounting method |
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