CN2514327Y - Imitating loader for press - Google Patents
Imitating loader for press Download PDFInfo
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- CN2514327Y CN2514327Y CN 01259922 CN01259922U CN2514327Y CN 2514327 Y CN2514327 Y CN 2514327Y CN 01259922 CN01259922 CN 01259922 CN 01259922 U CN01259922 U CN 01259922U CN 2514327 Y CN2514327 Y CN 2514327Y
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Abstract
The utility model relates to a mechanical press simulation loading device used in detecting output capacity of press and service condition of simulation process. The equipment can be employed to detect output capacity of press by producing a corresponding resistance according to position of press slide. The equipment is controlled by computer and driven by liquid pressure to detect valve journey and oil pressure, and a large cartridge valve is used to change oil discharge flux and oil discharge pressure of loading cylinder into that of back-pressure cavity, the process of which is controlled by flow proportion servo valve. The device can be applicable to various mechanical press manufacturing enterprises.
Description
The utility model relates to a kind of equipment that is used for inspection pressure machine fan-out capability (comprising power output and output energy) and simulation process operating position on pressing machine.
Pressing machine is when dispatching from the factory, its fan-out capability and the technology operating position on this pressing machine is one of problem of being concerned about the most of user always, particularly the new technology of user's exploitation can normally be used on this pressing machine, and whether the user buys the determinative of this kind pressing machine especially.Do not have mould and corresponding condition if pressing machine is made enterprise, so how to come the fan-out capability of inspection pressure machine how to reach the operating position of simulation process on the pressing machine particular importance that just seems with other means.
The purpose of this utility model provides a kind of pressing machine simulation loading equipment, it both can be used for the power output that detected pressures machine slide block is gone up at an arbitrary position, also can be used for the maximum output energy of detected pressures machine in effective travel, equally also can be used for the operating position of simulation process on pressing machine.
The purpose of this utility model is achieved in that pressing machine simulation loading equipment mainly forms by loading cylinder, piston, big inserted valve, pressure transducer, displacement transducer, computing machine and flow proportional servo-valve.Piston can move up and down in loading cylinder, and when not having load on the piston, low pressure fuel pump can be given and load oil supply cylinder, and piston moves up under the driving of hydraulic oil; When slide block was pressed piston top, piston can move down.Big inserted valve can reduce the size of oil pressure in the flow proportional servo-valve, and the speed that hydraulic oil is discharged in the control loaded cylinder.High-pressure oil pump can be given big inserted valve fuel feeding, makes big inserted valve produce back pressure.The size of back pressure is controlled by the size of controlling its drain charge flow by the flow proportional servo-valve, and the size of flow proportional servo-valve drain charge flow can realize by the size of its drain charge opening of computer control.Pressure transducer is used for detecting the oil pressure that loads cylinder and big inserted valve in good time.Displacement transducer is used for detecting the displacement of piston in good time.Computing machine is used to receive and the signal of processing pressure sensor and displacement transducer, can also control the keying of low pressure fuel pump and high-pressure oil pump and the size of flow proportional servo-valve drain charge opening.
Owing to adopted above-mentioned technical scheme, when piston when the driving of low pressure fuel pump is moved to the position of prior setting, the low pressure fuel pump fuel cut-off, piston just has been parked in the position of setting like this.Computing machine is according to the power output-position curve of pressing machine, find out the maximum, force that pressing machine can be exported on this position, and calculate in the big inserted valve size of corresponding back pressure, start high-pressure oil pump (high-pressure oil pump is worked all the time) and flow proportional servo-valve then in whole testing process, in big inserted valve, produce corresponding back pressure.When press ram was pressed on the piston, owing to be provided with a little inserted valve between loading cylinder and low pressure fuel pump, the hydraulic oil that loads in the cylinder can not be discharged by the pipeline of low pressure fuel pump.Slide block and piston rigidly connect when touching, the oil pressure that loads in the cylinder is very low, and the back pressure of big inserted valve is higher, its spool can not be opened, hydraulic oil does not have the outlet of leakage, and pressure rises rapidly, when pressure rises to the spool that can open big inserted valve, the hydraulic oil that loads in the cylinder is gone out by pipeline leakage from the outlet on the big inserted valve, and piston just can move down with slide block like this.If slide block can be subdued piston, prove that pressing machine has reached design load in the power output of this position.If repeat above-mentioned process, the displacement of slide block (or piston) is transferred to computing machine by displacement transducer, and computing machine is found out new back pressure value according to reposition, and produces new back pressure by the Control Flow proportional servo valve.If press ram all can be subdued piston at an arbitrary position, prove that then the power output of pressing machine has all reached design load in whole effective pressure stroke.
If the output energy of detected pressures machine, can be according to the power output-position curve of pressing machine, choosing energy wherein equates with setting value and is positioned near the bottom dead centre one section, repeat the process of above-mentioned detected pressures machine power output then continuously, if pressing machine can be subdued piston continuously, prove that then the output energy of pressing machine has reached design load.
If the operating position of simulation process on equipment, the power output-position curve that at first resistance of deformation-displacement curve of technology is converted to pressing machine is input in the computing machine.Repeat the testing process of above-mentioned power output then continuously, if in whole continuous stroke, pressing machine can be worked stably and normally, proves that then this technology can realize on this pressing machine.
The method of traditional detected pressures machine fan-out capability is the breaker method.This method can only the detected pressures machine power output, and can not the output energy of detected pressures machine in a certain section stroke.Can use well on pressing machine as for detecting novel process, the breaker rule is powerless.But the utility model can solve above-mentioned all problems well.
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structure principle chart of the utility model embodiment.
Among the figure, 1. piston 2. loads cylinder 3. big accumulator 4. big inserted valve 5. flow proportional servo-valves 6,17 pressure transducers 7. displacement transducers 8. little accumulator 9. little inserted valve 10. retaining valves 11,12. surplus valves 13. low pressure fuel pumps 14. high-pressure oil pumps 15. fuel tanks 16. computing machines 18,19,20,21,22. pipelines
As shown in Figure 1, pressing machine simulation loading equipment is mainly formed by loading cylinder 2, piston 1, big inserted valve 4, pressure transducer 6, displacement transducer 7, computing machine 16 and flow proportional servo-valve 5.Piston 1 can move up and down in loading cylinder 2.Big inserted valve 4 is fixed on and loads on the cylinder 2, and the hydraulic fluid port of one end communicates with loading cylinder 2.The oil-in of big accumulator 3 communicates with big inserted valve 4 and fuel tank 15 respectively by pipeline 18, and it can cushion the fluctuation that loads oil pressure in the cylinder 2.Little inserted valve 9 communicates with loading cylinder 2 and low pressure fuel pump 13 by pipeline 19 and 20 respectively.Flow proportional servo-valve 5 communicates with big inserted valve 4 by pipeline 21, and communicates with high-pressure oil pump 14 by pipeline 22, retaining valve 10 and pipeline 23.Pressure transducer 6 can be measured the oil pressure that loads in the cylinder 2 in good time in loading cylinder 2.The movable end of displacement transducer 7 links to each other with piston 1, is used to measure the displacement of piston 1.Computing machine 16 is used to receive the signal of pressure transducer 6, displacement transducer 7 and pressure transducer 17, and control low pressure fuel pump 13, high-pressure oil pump 14 and flow proportional servo-valve 5, and its screen can show the power output-position curve of pressing machine.Surplus valve 11 and 12 is used to regulate the output oil pressure of low pressure fuel pump 13 and high-pressure oil pump 14.Little accumulator 8 can cushion the fluctuation of oil pressure in the big inserted valve 4.
It is as follows that the utility model is used for the course of action of detected pressures machine power output:
At first to determine the reference position of piston 1, guarantee press ram when lower dead point position, the distance L 〉=5mm of the intracavity bottom of the bottom of piston 1 and loading cylinder 2.Under the control of computing machine 16, start low pressure fuel pump 13, by pipeline 20, little inserted valve 9 and pipeline 19 to loading cylinder 2 fuel feeding, piston 1 slowly rises, and the movable end of displacement transducer 7 moves with piston 1, and the position of piston 1 shows on the screen of computing machine simultaneously, after piston 1 rises to the precalculated position, close low pressure fuel pump 13, piston 1 is parked in this position, and surplus valve 11 can be regulated the size of low pressure fuel pump 13 charge oil pressures.Start high-pressure oil pump 14 (in whole testing process, not closing all the time), by pipeline 23, retaining valve 10, pipeline 22, flow proportional servo-valve 5 and pipeline 21 fuel feeding in big inserted valve 4, little accumulator 8 can buffer traffic proportional servo valve 5 in the fluctuation of oil pressure, surplus valve 12 can be regulated the size of high-pressure oil pump 14 charge oil pressures.We are input to the power output-position curve of pressing machine in the computing machine 16 in advance, and computing machine 16 is found the power output of pressing machine out according to the position of piston 1, and calculate the size that loads oil pressure corresponding in the cylinder 2, and computing formula is:
Y＝P/S
In the formula, Y is for loading the oil pressure in the cylinder 2
P is that pressing machine is in this locational power output
S is the useful area of piston 1
Calculation of backpressure formula in the big inserted valve 4 is:
Y1＝Y·S1/S2
In the formula, Y1 is the back pressure in the big inserted valve 4
S1 is the useful area of big inserted valve 4 spool left ends
S2 is the useful area of big inserted valve 4 spool right-hand members
Computing machine 16 is regulated the size of flow proportional servo-valve 5 drain charge openings according to the numerical value of Y1 and pressure transducer 17, thereby controls the size of back pressure in the big inserted valve 4.
When press ram is pressed downwardly onto piston 1, the oil pressure Y3 that loads in the cylinder 2 rises rapidly, when oil pressure Y3＞Y, the spool of big inserted valve 4 moves right, simultaneously the oil-out of pipeline 18 is opened, the hydraulic oil that loads in the cylinder 2 flows back to fuel tank 15 and big accumulator 3 by pipeline 18, and the oil pressure that loads in the cylinder 2 reduces, and piston 1 moves down with press ram.When Y3＜Y, the spool of big inserted valve 4 is moved to the left, and the oil-out of pipeline 18 is closed, and loads oil pressure in the cylinder 2 and continues to press down piston 1 with slide block and increase, and repeats above-mentioned process then.Big accumulator 3 can cushion the fluctuation that loads oil pressure in the cylinder 2.If slide block all can be subdued piston 1 in any one position, prove that then the power output of pressing machine has reached design load.
This equipment can be widely used in the manufacturing enterprise of each pressing machine.
Claims (5)
1. pressing machine simulation loading equipment, mainly form by loading cylinder (2), piston (1), big inserted valve (4), pressure transducer (6), displacement transducer (7), computing machine (16) and flow proportional servo-valve (5), piston (1) can move in loading cylinder (2), it is characterized in that: pressure transducer (6) can be measured the oil pressure that loads in the cylinder (2) in good time; The moving part of displacement transducer (7) and piston (1) are fixed together, and can measure the displacement of piston (1) in good time; Big inserted valve (4) is installed in and loads on the cylinder (2), and moving of its spool can open and close pipeline (18), comes the hydraulic oil earial drainage in the control loaded cylinder (2), and big inserted valve (4) can produce back pressure, comes the oil pressure of hydraulic oil in the control loaded cylinder (2); Flow proportional servo-valve (5) communicates with big inserted valve (4) by pipeline (21), computing machine can be by the size of Control Flow proportional servo valve (5) drain charge opening, control the back pressure in the big inserted valve (4), thereby reach the purpose of oil pressure in the control loaded cylinder (2).
2. pressing machine simulation loading equipment according to claim 1 is characterized in that: the oil drain out that loads cylinder (2) is provided with big inserted valve (4), and its spool two ends area is different, and is smaller near the area that loads cylinder one end.The volume that the volumetric ratio of big inserted valve (4) back pressure cavity loads cylinder is little.The pressure of back pressure cavity and oil extraction flow can enough commonsense methods be controlled.
3. pressing machine simulation loading equipment according to claim 1 is characterized in that: big accumulator (3) communicates with loading cylinder (2) by pipeline (18), can cushion the fluctuation that loads oil pressure in the cylinder (2).
4. pressing machine simulation loading equipment according to claim 1, it is characterized in that: little accumulator (8) communicates with big inserted valve (4) by pipeline (22), flow proportional servo-valve (5) and pipeline (21), can buffer traffic proportional servo valve (5) in the fluctuation of oil pressure.
5. pressing machine simulation loading equipment according to claim 1, it is characterized in that: computing machine (16) can receive and the signal of processing pressure sensor (6), pressure transducer (17) and displacement transducer (7), Control Flow proportional servo valve (5), low pressure fuel pump (13) and high-pressure oil pump (14) also can be presented at the power output-position curve of pressing machine on the screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01259922 CN2514327Y (en) | 2001-08-22 | 2001-08-22 | Imitating loader for press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01259922 CN2514327Y (en) | 2001-08-22 | 2001-08-22 | Imitating loader for press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2514327Y true CN2514327Y (en) | 2002-10-02 |
Family
ID=33668191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01259922 Expired - Fee Related CN2514327Y (en) | 2001-08-22 | 2001-08-22 | Imitating loader for press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2514327Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390520C (en) * | 2005-11-10 | 2008-05-28 | 上海大学 | Buffer device for testing performance of automobile gear shifter unit assemby |
| CN101451549B (en) * | 2007-11-30 | 2011-04-20 | 比亚迪股份有限公司 | Method for controlling hydraulic system and hydraulic system for implementing the same |
| CN102778398A (en) * | 2012-07-23 | 2012-11-14 | 中国兵器工业集团第七0研究所 | Electro-hydraulic servo system for fatigue test for body of engine with high explosive pressure |
| CN103522583A (en) * | 2013-09-23 | 2014-01-22 | 北京印刷学院 | Regulating and controlling device of gas-liquid booster-type die-cutting machine |
| CN103711739A (en) * | 2012-10-08 | 2014-04-09 | 罗伯特·博世有限公司 | Hydraulic control device and press with such a control device |
| CN104500459A (en) * | 2014-12-09 | 2015-04-08 | 上海航天精密机械研究所 | Hydraulic gravity balancing system realizing micro gravity environment |
| CN107387471A (en) * | 2017-07-26 | 2017-11-24 | 南京威途真空技术有限公司 | Diffusion in vacuum soldering equipment hydraulic system and its compress control method |
| CN109458381A (en) * | 2018-12-24 | 2019-03-12 | 尚廷东 | A kind of hydraulic loading device of included standard force source |
| CN111487010A (en) * | 2020-05-30 | 2020-08-04 | 山西斯米咖科技有限公司 | Pressure calibration method of bipolar guide rail pressure mechanism |
| CN111721562A (en) * | 2020-06-05 | 2020-09-29 | 扬力集团股份有限公司 | Energy testing device for press |
-
2001
- 2001-08-22 CN CN 01259922 patent/CN2514327Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390520C (en) * | 2005-11-10 | 2008-05-28 | 上海大学 | Buffer device for testing performance of automobile gear shifter unit assemby |
| CN101451549B (en) * | 2007-11-30 | 2011-04-20 | 比亚迪股份有限公司 | Method for controlling hydraulic system and hydraulic system for implementing the same |
| CN102778398A (en) * | 2012-07-23 | 2012-11-14 | 中国兵器工业集团第七0研究所 | Electro-hydraulic servo system for fatigue test for body of engine with high explosive pressure |
| CN103711739A (en) * | 2012-10-08 | 2014-04-09 | 罗伯特·博世有限公司 | Hydraulic control device and press with such a control device |
| CN103522583A (en) * | 2013-09-23 | 2014-01-22 | 北京印刷学院 | Regulating and controlling device of gas-liquid booster-type die-cutting machine |
| CN103522583B (en) * | 2013-09-23 | 2015-08-19 | 北京印刷学院 | A kind of gas-liquid pressurizing type die-cutting machine regulation device |
| CN104500459A (en) * | 2014-12-09 | 2015-04-08 | 上海航天精密机械研究所 | Hydraulic gravity balancing system realizing micro gravity environment |
| CN104500459B (en) * | 2014-12-09 | 2016-08-17 | 上海航天精密机械研究所 | Realize the hydraulic pressure weight balancing system of microgravity environment |
| CN107387471A (en) * | 2017-07-26 | 2017-11-24 | 南京威途真空技术有限公司 | Diffusion in vacuum soldering equipment hydraulic system and its compress control method |
| CN109458381A (en) * | 2018-12-24 | 2019-03-12 | 尚廷东 | A kind of hydraulic loading device of included standard force source |
| CN111487010A (en) * | 2020-05-30 | 2020-08-04 | 山西斯米咖科技有限公司 | Pressure calibration method of bipolar guide rail pressure mechanism |
| CN111721562A (en) * | 2020-06-05 | 2020-09-29 | 扬力集团股份有限公司 | Energy testing device for press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |