CN105034441A - Overload detection method for press machine - Google Patents
Overload detection method for press machine Download PDFInfo
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- CN105034441A CN105034441A CN201510445589.0A CN201510445589A CN105034441A CN 105034441 A CN105034441 A CN 105034441A CN 201510445589 A CN201510445589 A CN 201510445589A CN 105034441 A CN105034441 A CN 105034441A
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Abstract
The invention discloses an overload detection method for a press machine. The overload detection method is characterized in that the overload detection method adopts a load detection mechanism, a stroke angle detection mechanism, a stamping force stroke curve drawing module, an overload determining module and an alarm module. The load detection mechanism and the stroke angle detection mechanism are electrically connected with the stamping force stroke curve drawing module. The stamping force stroke curve drawing module is electrically connected with the overload determining module. The overload determining module is electrically connected with the alarm module. The overload detection method for the press machine has following advantages: the method is capable of detecting stamping force of the press machine in a real-time mode, automatically drawing an actual stroke pressure curve, making a comparison between the actual stroke pressure curve and the designed stroke pressure curve of the press machine in order to determine whether the press machine is in an overload state or not at any position of stroke displacement in a real-time manner and to prevent the press machine against insufficient stamping energy during a stamping process, a clutch of the press machine against slippage and transmission gear teeth against breakage; as a result, service lifetime of the press machine is prolonged and potential safety hazards are eliminated.
Description
Technical field
The present invention relates to forcing press, particularly relate to a kind of overload detection method of forcing press.
Background technology
The application of forcing press in the middle of modern manufacturing industry field is more and more extensive, and its demand is day by day increased sharply.And different stamping products requires all to be not quite similar to the stamping press of forcing press, and the actual stamping press needed for stamping parts is difficult to calculate accurately, and this causes very large puzzlement to the punching press tonnage type selecting of forcing press.
Way general at present roughly estimates maximum stamping press needed for it according to the structure of diel and the geomery of stamping parts, then reserved certain safe clearance, the forcing press matching nominal pressure larger than required maximum stamping press carries out punching production.There are some drawbacks in this mode, such as most for security consideration, and the nominal pressure of forcing press is selected excessive, causes unnecessary device resource waste; And sometimes in order to reduce the purchase quantity of forcing press, different stamping parts can be placed on a same forcing press and produce, this just likely produces the phenomenon of forcing press overload, and therefore and greatly the life-span of forcing press shortens.
Traditional forcing press overload protective device just can only carry out unloading protecting when actual stamping press is greater than the nominal pressure of forcing press; and the feature of exerting oneself of forcing press to be slide block not identical at different travel displacement places stamping press; usually 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 place likely can not meet punching press demand; but traditional forcing press overload protection cannot detect, this all can cause very large potential safety hazard to forcing press and mould.And from some forcing presses actual make for, its nominal pressure meets the maximum stamping press needed for diel after tested, but often there is the problems such as punching press energy shortage, press machine clutch slippage, toothed drive gear fracture, the basic reason producing above problem is that the design pressure of forcing press at certain travel displacement place cannot meet the stamping press demand of stamping parts, thus consumed the energy of forcing press storage excessively, cause remainder stroke energy shortage; If certain position stamping press moment is excessive, press machine clutch moment of torsion can be caused not enough, and produce sliding phenomenon, occur the extreme phenomenons such as travelling gear intensity deficiency, tooth fracture time more serious, serious threat is to the life-span of forcing press.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of can detection in real time the stamping press of forcing press, and can the overload detection method of forcing press that whether transships of real-time judge forcing press.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of overload detection method of forcing press, comprise 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 are electrically connected with described stamping press stroke curve drafting module respectively, described stamping press stroke curve drafting module is electrically connected with described overload judge module, described overload judge module is electrically connected with described alarm module, its overload detection method specifically comprises following concrete steps:
(1), overload judge module in input pressure machine design runlength displacement and with the design pressure corresponding to travel displacement, then transship judge module with design runlength displacement be X-coordinate, with design pressure for Y-coordinate, draw forcing press design runlength pressure curve and preserve;
(2), starting pressure machine, the travel displacement of stroke angles testing agency real-time detected pressures machine slide block, and by the travel displacement position of slide block by predetermined time interval unit transmission in stamping press stroke curve drafting module, stamping press stroke curve drafting module by the travel displacement position of the slide block received with X-coordinate numerical value carry out record storage;
(3), the actual stamping press that bears when punching press of load detection mechanism real-time detected pressures machine, and by identical time interval unit, the actual stamping press corresponding with the travel displacement position of slide block being transferred in stamping press stroke curve drafting module, the actual stamping press received is carried out record with Y-coordinate numerical value and stores by stamping press stroke curve drafting module;
(4), stamping press stroke curve drafting module for X-coordinate with the travel displacement position of slide block, with corresponding actual stamping press for Y-coordinate, is drawn traveled distance pressure curve and preserves;
(5) traveled distance pressure curve and design runlength pressure curve import in the same coordinate system by the judge module that, transships compares, and judge whether have common factor between two curves, if there is common factor, then control alarm module to give a warning, simultaneously alarm module by Signal transmissions to the control system of forcing press self, quit work by control system controlled pressure machine, if do not occur simultaneously, then forcing press normally works.
Before described step (2), in stamping press stroke curve drafting module, setting needs the punching stroke number of times detected in advance, then before step (5), stamping press stroke curve drafting module is after the numerical value receiving a punching stroke, the punching stroke number of times of received punching stroke number of times and setting is compared, if do not reach set point number, then repeat step (2), (3), (4), if reach set point number, then perform step (5), in described step (5), many traveled distance pressure curves import in the same coordinate system with design runlength pressure curve by overload judge module one by one compares, stamping press stroke curve drafting module, by the detection numerical value of the actual stamping press of repeated multiple times reception forcing press, draws many traveled distance pressure curves, to guarantee the accuracy rate detected.
In described step (1), the higher limit of the ratio of actual stamping press and same position place design pressure is set in overload judge module, in described step (5), if traveled distance pressure curve and design runlength pressure curve do not occur simultaneously, each actual stamping press at ram travel displaced position place carries out than removing with the design pressure at same position place by the judge module that then transships, if ratio is greater than the higher limit of setting, then control alarm module to give a warning, prompting operator, whether closing presure machine is determined by operator, if ratio is not more than the higher limit of setting, then forcing press normally works, by the ratio of the actual stamping press and same position place design pressure that judge forcing press, the matching degree of the design pressure of actual stamping press needed for diel and forcing press can be judged better, when the ratio of the actual stamping press needed for diel and same position place 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 that the foil gauge system that is fixedly mounted on forcing press column or the hydraulic pressure be fixedly mounted on forcing press overload oil pressure protection pipeline detect sensing system.
Described stroke angles testing agency is the stroke angles testing agency that forcing press carries.
Compared with prior art, advantage of the present invention can be detected in real time the stamping press of forcing press 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 occurring punching press energy shortage, press machine clutch slippage or toothed drive gear phenomenon of rupture in punching course, improve the service life of forcing press, also eliminate safe hidden trouble simultaneously.
Accompanying drawing explanation
Fig. 1 is model calling principle schematic used in the present invention;
Fig. 2 is 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, comprise load detection mechanism 1, stamping press stroke curve drafting module 2, the stroke angles testing agency 5 that carries of overload judge module 3, alarm module 4 and forcing press 6, load detection mechanism 1 and stroke angles testing agency 5 are electrically connected with stamping press stroke curve drafting module 2 respectively, stamping press stroke curve drafting module 2 is electrically connected with overload judge module 3, overload judge module 3 is electrically connected with alarm module 4, and its overload detection method specifically comprises following concrete steps:
(1), overload judge module 3 in input pressure machine design runlength displacement and with the design pressure corresponding to travel displacement, then transship judge module 3 with design runlength displacement be X-coordinate, with design pressure for 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 actual stamping press and same position place design pressure simultaneously;
(2), in stamping press stroke curve drafting module 2, setting needs the punching stroke number of times detected in advance;
(3), starting pressure machine, the travel displacement of the real-time detected pressures machine slide block of stroke angles testing agency 5, and by the travel displacement position of slide block by predetermined time interval unit transmission in stamping press stroke curve drafting module 2, stamping press stroke curve drafting module 2 by the travel displacement position of the slide block received with X-coordinate numerical value carry out record storage;
(4), the load detection mechanism 1 in real time actual stamping press that bears when punching press of detected pressures machine 6, and by identical time interval unit, the actual stamping press corresponding with the travel displacement position of slide block being transferred in stamping press stroke curve drafting module 2, the actual stamping press received is carried out record with Y-coordinate numerical value and stores by stamping press stroke curve drafting module 2;
(5), stamping press stroke curve drafting module 2 for X-coordinate with the travel displacement position of slide block, with corresponding actual stamping press for Y-coordinate, is drawn traveled distance pressure curve and preserves;
(6), stamping press stroke curve drafting module 2 is after the numerical value receiving a punching stroke, the punching stroke number of times of received punching stroke number of times and setting is compared, if do not reach set point number, then repeat step (3), (4), (5), if reach set point number, then perform step (7);
(7) many traveled distance pressure curves import in the same coordinate system with design runlength pressure curve by the judge module 3 that, transships one by one compares, and judge whether have common factor between two curves, if there is common factor, then control alarm module 4 to give a warning, simultaneously alarm module 4 by Signal transmissions to the control system of forcing press 6 self, quit work by control system controlled pressure machine 6, if do not occur simultaneously, then perform step (8);
(8) each actual stamping press at ram travel displaced position place carries out than removing with the design pressure at same position place by the judge module 3 that, transships, if ratio is greater than the higher limit of setting, then control alarm module 4 to give a warning, prompting operator, whether closing presure machine is determined by operator, if ratio is not more than the higher limit of setting, then forcing press 6 normally works.
In above-described embodiment; load detection mechanism 1 can adopt the foil gauge system that is fixedly mounted on forcing press 6 column or be fixedly mounted on the hydraulic pressure that forcing press 6 transships on oil pressure protection pipeline and detect sensing system, and foil gauge system or hydraulic pressure detect sensing system and all adopts structure conventional at present.
Claims (5)
1. the overload detection method of a forcing press, it is characterized in that comprising 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 are electrically connected with described stamping press stroke curve drafting module respectively, described stamping press stroke curve drafting module is electrically connected with described overload judge module, described overload judge module is electrically connected with described alarm module, and its overload detection method specifically comprises following concrete steps:
(1), overload judge module in input pressure machine design runlength displacement and with the design pressure corresponding to travel displacement, then transship judge module with design runlength displacement be X-coordinate, with design pressure for Y-coordinate, draw forcing press design runlength pressure curve and preserve;
(2), starting pressure machine, the travel displacement of stroke angles testing agency real-time detected pressures machine slide block, and by the travel displacement position of slide block by predetermined time interval unit transmission in stamping press stroke curve drafting module, stamping press stroke curve drafting module by the travel displacement position of the slide block received with X-coordinate numerical value carry out record storage;
(3), the actual stamping press that bears when punching press of load detection mechanism real-time detected pressures machine, and by identical time interval unit, the actual stamping press corresponding with the travel displacement position of slide block being transferred in stamping press stroke curve drafting module, the actual stamping press received is carried out record with Y-coordinate numerical value and stores by stamping press stroke curve drafting module;
(4), stamping press stroke curve drafting module for X-coordinate with the travel displacement position of slide block, with corresponding actual stamping press for Y-coordinate, is drawn traveled distance pressure curve and preserves;
(5) traveled distance pressure curve and design runlength pressure curve import in the same coordinate system by the judge module that, transships compares, and judge whether have common factor between two curves, if there is common factor, then control alarm module to give a warning, simultaneously alarm module by Signal transmissions to the control system of forcing press self, quit work by control system controlled pressure machine, if do not occur simultaneously, then forcing press normally works.
2. the overload detection method of a kind of forcing press as claimed in claim 1, it is characterized in that before described step (2), in stamping press stroke curve drafting module, setting needs the punching stroke number of times detected in advance, then before step (5), stamping press stroke curve drafting module is after the numerical value receiving a punching stroke, the punching stroke number of times of received punching stroke number of times and setting is compared, if do not reach set point number, then repeat step (2), (3), (4), if reach set point number, then perform step (5), in described step (5), many traveled distance pressure curves import in the same coordinate system with design runlength pressure curve by overload judge module one by one compares.
3. the overload detection method of a kind of forcing press as claimed in claim 1, it is characterized in that in described step (1), the higher limit of the ratio of actual stamping press and same position place design pressure is set in overload judge module, in described step (5), if traveled distance pressure curve and design runlength pressure curve do not occur simultaneously, each actual stamping press at ram travel displaced position place carries out than removing with the design pressure at same position place by the judge module that then transships, if ratio is greater than the higher limit of setting, then control alarm module to give a warning, prompting operator, whether closing presure machine is determined by operator, if ratio is not more than the higher limit of setting, then forcing press normally works.
4. the overload detection method of a kind of forcing press as claimed in claim 1, is characterized in that described load detection mechanism is that the foil gauge system that is fixedly mounted on forcing press column or the hydraulic pressure be fixedly mounted on forcing press overload oil pressure protection pipeline detect sensing system.
5. the overload detection method of a kind of forcing press as claimed in claim 1, is characterized 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 true CN105034441A (en) | 2015-11-11 |
| CN105034441B CN105034441B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510445589.0A Expired - Fee Related CN105034441B (en) | 2015-07-27 | 2015-07-27 | A kind of overload detection method of forcing press |
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Cited By (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 |
| CN110039485A (en) * | 2018-01-17 | 2019-07-23 | 沃恩阿克斯公开股份有限公司 | Press |
| 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 |
| CN110757878A (en) * | 2019-10-31 | 2020-02-07 | 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029320B (en) * | 2012-11-29 | 2015-03-11 | 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 |
| CN103231543B (en) * | 2013-05-07 | 2015-09-09 | 重庆市机电设计研究院 | Total travel high-precision servo pressing method |
-
2015
- 2015-07-27 CN CN201510445589.0A patent/CN105034441B/en not_active Expired - Fee Related
Cited By (6)
| 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 |
| CN110039485A (en) * | 2018-01-17 | 2019-07-23 | 沃恩阿克斯公开股份有限公司 | Press |
| 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 |
| CN110757878A (en) * | 2019-10-31 | 2020-02-07 | 济宁科力光电产业有限责任公司 | Pressure fault detection system and method of servo press |
| 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 |
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| CN105034441B (en) | 2016-09-14 |
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Granted publication date: 20160914 Termination date: 20180727 |