CN103235605B - A kind of numerical control rotating platform testing table load Loading Control System of simulated condition and control method - Google Patents
A kind of numerical control rotating platform testing table load Loading Control System of simulated condition and control method Download PDFInfo
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Abstract
The present invention relates to the simulation loading control field to numerical control rotating platform bearing load, special standby numerical control rotating platform testing table load Loading Control System and the control method relating to a kind of simulated condition, is characterized in that: comprise the hydraulic loading system of simulation static load, the simulation excitation system of dynamic load and the control system of load simulated loading.The numerical control rotating platform testing table load Loading Control System of this simulated condition and control method, can workpiece to be processed applies numerical control rotating platform under the various operating mode of real simulation static load, can the dissimilar lathe of real simulation in process to the dynamic load that numerical control rotating platform applies, for the design of numerical control rotating platform, manufacture, Optimal Experimental research provides useful reference and the firsthand data, contributes to the precision and the rigidity that improve numerical control rotating platform; The realization of whole Loading Control System simply, is conveniently easy to operation, and the required test preparatory period is short, and experimentation cost is low.
Description
Technical field
The present invention relates to the simulation loading control field to numerical control rotating platform bearing load, special standby numerical control rotating platform testing table load Loading Control System and the control method relating to a kind of simulated condition.
Background technology
High-grade, digitally controlled machine tools and basic manufacturing equipment are under the jurisdiction of the category of one of the seven large new industries that National Program for Medium-to Long-term Scientific and Technological Development (2006-2020) proposes high-end equipment manufacturing industry.And numerical control rotating platform is the core functional components of numerically-controlled machine, the performance height of numerical control rotating platform under the operating modes such as milling, grinding, drilling, boring, to directly affect the precision of numerical control machine tool and machining finished product, thus production high precision, low cost, the numerical control rotating platform that Integration ofTechnology degree is high is the important prerequisite revitalizing China's equipment manufacture.
The numerical control rotating platform of China's autonomous production is under the prerequisite of the identical rigidity of structure, product is heavier, load is less, very large difficulty is brought to miniaturization, maneuverability, external numerical control rotating platform manufacturer comprises the manufacturer in China Taiwan, why can produce that precision is high, superior performance, the life-span is long, bearing capacity is large numerical control rotating platform, be because they are provided with relevant a whole set of high-accuracy pilot system.Therefore the numerical control rotating platform that quality is light, rigidity is high in order to develop, precision is high, the testing table producing a kind of special detection numerical control rotating platform combination property seems most important, provide support to the autonomous industrialization of numerical control rotating platform with for high-grade, digitally controlled machine tools are supporting, significant.
At present, domestic Jue great Shuo numerical control rotating platform manufacturer is when detecting numerical control rotating platform critical performance parameters, can only measure the static parameter of numerical control rotating platform, and the dynamic parameter evaluating numerical control rotating platform performance most critical cannot effectively be measured, so until still do not determine that a set of performance to numerical control rotating platform carries out the standard of detecting and assessing at present.
Therefore, for the drawback existing for current testing process, be necessary to study in fact, to provide a kind of scheme, solve defect existing in existing testing process, avoid detecting each performance parameter of numerical control rotating platform under dynamic load effect, namely the numerical control rotating platform testing table load Loading Control System of simulated condition of the present invention to can be used under experimental enviroment static load that accurately real simulation numerical control rotating platform bears in actual condition and dynamic load, can detect the Key Performance Indicator of numerical control rotating platform easily.
Summary of the invention
For solving the problem, the object of the present invention is to provide a kind of numerical control rotating platform testing table load Loading Control System and control method of simulated condition, for the various load conditions under accurate simulation real working condition suffered by numerical control rotating platform, comprise static load and the dynamic load that produces in practical work process of lathe that laid workpiece produces.
For achieving the above object, technical scheme of the present invention is:
A kind of numerical control rotating platform testing table load Loading Control System of simulated condition, it is characterized in that: comprise the hydraulic loading system of simulation static load, the simulation excitation system of dynamic load and the control system of load simulated loading, the hydraulic loaded turnkey of described simulation static load draws together motor, variable vane pump, proportional pressure-reducing valve and solenoid directional control valve, and the adjustable controlled hydraulic loaded loop of decomposition pressure thus; The excitation system of described simulation dynamic load comprises power amplifier, high energy activator and pressure transducer; The control system of described load simulated loading comprises host computer industrial computer and PLC slave computer.
The hydraulic loading system of described simulation static load also comprises fuel tank, air strainer, liquid level gauge, oil absorption filter, high pressure filter, well heater, high-pressure ball valve, liquid level relay, metallic thermometer, tubular type retaining valve, surplus valve, superposing type throttling valve, tensimeter, pressure transducer and accurate oil cooling unit, motor is rotated by shaft coupling connecting fluid pressure oil pump, hydraulic oil pump connects fuel tank by inlet line, fuel tank is through retaining valve, surplus valve, high pressure filter, proportional pressure-reducing valve, electro-hydraulic proportion reversing valve, and loading hydraulic cylinder is connected to after superposing type throttling valve.
The hydraulic loading system of described simulation static load comprises the first hydraulic cylinder 1, second hydraulic cylinder 2, the 3rd hydraulic cylinder 3, first vibrator 6, second vibrator 7 and the 3rd vibrator 8, first hydraulic cylinder 1, second hydraulic cylinder 2, the 3rd hydraulic cylinder 3 are arranged on the axial, radial of numerical control rotating platform and circumferential direction respectively, and the first vibrator 6, second vibrator 7 and the 3rd vibrator 8 are separately positioned on axial, the radial and circumferential position of numerical control rotating platform.
A numerical control rotating platform testing table load loading control method for simulated condition, comprises the following steps:
Step 1: install hydraulic cylinder respectively by the hydraulic loading system of simulating static load on the axial, radial of numerical control rotating platform basic machine and circumference, the high pressure liquid force feed logarithm control turntable body three-dimensional utilizing hydraulic loaded loop to produce loads, to simulate the static load that numerical control rotating platform bears in actual cut operating mode;
Step 2: by simulating the excitation system of dynamic load, according to the loading spectrum preset, issue steering order to vibrator, produce corresponding exciting force, simulate numerical control rotating platform dynamic force suffered in actual cut process by the synergy of three direction vibrators;
Step 3: be host computer and PLC by the control system of load simulated loading by industrial computer be that slave computer forms, host computer controls sending instructions under the PLC in described control system, to control hydraulic cylinder and the vibrator action of described system.
Described step 1 specifically comprises the following steps:
By the effect of loading hydraulic cylinder, give numerical control rotating platform work top loading force, when giving solenoid directional control valve and applying command voltage signal, proportional reversing valve is by changing spool displacement, change hydraulic oil to flow to, realize the control of described loading hydraulic cylinder direction of motion, when giving proportional pressure-reducing valve and applying command voltage signal, by the effect of pressure spring, the pressure reduction at reduction valve two ends is changed, the force value of the hydraulic oil exported is converted, the static load realized under different operating mode loads, in the axis of turntable body, radial direction and circumference install hydraulic cylinder respectively, the high pressure liquid force feed utilizing hydraulic circuit to produce loads turntable body three-dimensional, with the static load that simulating turntable bears in actual cut operating mode.
Described step 3 specifically comprises the following steps:
Host computer controls sending instructions under the PLC in the control system of described load simulated loading, the control software design of host computer is according to the requirement of actual tests, select suitable loading spectrum and after treatment corresponding control command signal sent to hydraulic loading system and exciter system, and the feedback information collected and loading spectrum are compared, carry out algorithm compensation, make static load loading and dynamic load load consistent with actual condition as far as possible.
A kind of numerical control rotating platform testing table load Loading Control System of simulated condition, in described load Loading Control System, comprise the hydraulic loaded for simulating workpiece quality static load, for the excitation system of simulating dynamic load and the control system be made up of industrial computer and PLC.Described numerical control rotating platform testing table platform is the effective object of the load Loading Control System of simulated condition, and the basic machine primarily of numerical control rotating platform forms, by simulating the loading effect of typical condition, and the sound state critical performance parameters of test numerical control rotating platform.The hydraulic loading system of described simulation static load is primarily of motor, variable vane pump, the hydraulic loaded loop that the pressure adjustable that proportional pressure-reducing valve and solenoid directional control valve form is controlled, in the axis of numerical control rotating platform basic machine, radial direction and circumference install hydraulic cylinder respectively, the high pressure liquid force feed logarithm control turntable body three-dimensional utilizing hydraulic loaded loop to produce loads, to simulate the static load that numerical control rotating platform bears in actual cut operating mode, the excitation system of described simulation dynamic load, mainly according to the loading spectrum preset, steering order is issued to vibrator, produce corresponding exciting force, numerical control rotating platform dynamic force suffered in actual cut process is simulated by the synergy of three direction vibrators, described control system is host computer and PLC by industrial computer is that slave computer forms, host computer controls sending instructions under the PLC in described control system, to control hydraulic cylinder and the vibrator action of described system.
Beneficial effect of the present invention is as follows:
The present invention relates to a kind of type approval test for numerical control rotating platform and simulation test, can simulated condition load Loading Control System.This load Loading Control System comprises hydraulic loading system for simulating static load, for the exciting loading system of simulating dynamic load and the control system be made up of industrial computer and PLC.Described numerical control rotating platform testing table platform is the effective object of the load Loading Control System of simulated condition, and its basic machine primarily of numerical control rotating platform forms.The hydraulic loading system of described simulation static load is primarily of motor, variable vane pump, the hydraulic loaded loop that the pressure adjustable that proportional pressure-reducing valve and solenoid directional control valve form is controlled, in the axis of numerical control rotating platform basic machine, radial direction and circumference install hydraulic cylinder respectively, the high pressure liquid force feed logarithm control turntable body three-dimensional utilizing hydraulic loaded loop to produce carries out static loading, to simulate the static load that numerical control rotating platform bears in actual cut operating mode, the exciting loading system of described simulation dynamic load, from PC according to the loading spectrum preset, steering order is issued to vibrator, produce corresponding exciting force, numerical control rotating platform dynamic force suffered in actual cut process is simulated by three direction exciting synergy, described control system is made up of industrial computer and PLC, host computer carries out instruction to the PLC in described control system and issues control, to control hydraulic cylinder and the vibrator action of described system.Advantage of the present invention is: unit or the department that need carry out numerical control rotating platform performance test do not need the concrete lathe of configuration to carry out actual processing cutting, the loading spectrum that only need arrange under different cutting operating mode just can reappear the acting force of different operating mode, and the realization of simulated condition load can effectively reduce the consumption of resource and reduce experimentation cost.
Use the numerical control rotating platform testing table load Loading Control System of simulated condition of the present invention, can workpiece to be processed applies numerical control rotating platform under the various operating mode of real simulation static load, can the dissimilar lathe of real simulation in process to the dynamic load that numerical control rotating platform applies, for the design of numerical control rotating platform, manufacture, Optimal Experimental research provides useful reference and the firsthand data, contributes to the precision and the rigidity that improve numerical control rotating platform; The realization of whole Loading Control System simply, is conveniently easy to operation, the required test preparatory period is short, experimentation cost is low, and the flexibility degree of load Loading Control System is high, the simulation loading that the loading spectrum of dissimilar lathe under different operating mode can realize load under different operating mode only need be called.
Accompanying drawing explanation
Fig. 1 is the principle of work schematic diagram of the numerical control rotating platform testing table load Loading Control System of simulated condition of the present invention;
Fig. 2 is the work structuring schematic diagram of the numerical control rotating platform testing table load Loading Control System of the simulated condition of the embodiment of the present invention;
Fig. 3 is the hydraulic loading system workflow diagram of the simulation static load of the numerical control rotating platform testing table load Loading Control System of the simulated condition of the embodiment of the present invention;
Fig. 4 is the hydraulic loading system fundamental diagram of the simulation static load of the numerical control rotating platform testing table load Loading Control System of the simulated condition of the embodiment of the present invention;
Fig. 5 is the excitation system fundamental diagram of the simulation dynamic load of the numerical control rotating platform testing table load Loading Control System of the simulated condition of the embodiment of the present invention;
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
On the contrary, the present invention is contained any by the substituting of making on marrow of the present invention and scope of defining of claim, amendment, equivalent method and scheme.Further, in order to make the public have a better understanding to the present invention, in hereafter details of the present invention being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the present invention completely for a person skilled in the art yet.
Embodiment one.
A kind of numerical control rotating platform testing table load Loading Control System of simulated condition, it is characterized in that: comprise the hydraulic loading system of simulation static load, the simulation excitation system of dynamic load and the control system of load simulated loading, the hydraulic loaded turnkey of described simulation static load draws together motor, variable vane pump, proportional pressure-reducing valve and solenoid directional control valve, and the adjustable controlled hydraulic loaded loop of decomposition pressure thus; The excitation system of described simulation dynamic load comprises power amplifier, high energy activator and pressure transducer; The control system of described load simulated loading comprises host computer industrial computer and PLC slave computer.
The hydraulic loading system of described simulation static load also comprises fuel tank, air strainer, liquid level gauge, oil absorption filter, high pressure filter, well heater, high-pressure ball valve, liquid level relay, metallic thermometer, tubular type retaining valve, surplus valve, superposing type throttling valve, tensimeter, pressure transducer and accurate oil cooling unit, motor is rotated by shaft coupling connecting fluid pressure oil pump, hydraulic oil pump connects fuel tank by inlet line, fuel tank is through retaining valve, surplus valve, high pressure filter, proportional pressure-reducing valve, electro-hydraulic proportion reversing valve, and loading hydraulic cylinder is connected to after superposing type throttling valve.
The hydraulic loading system of described simulation static load comprises the first hydraulic cylinder 1, second hydraulic cylinder 2, the 3rd hydraulic cylinder 3, first vibrator 6, second vibrator 7 and the 3rd vibrator 8, first hydraulic cylinder 1, second hydraulic cylinder 2, the 3rd hydraulic cylinder 3 are arranged on the axial, radial of numerical control rotating platform and circumferential direction respectively, and the first vibrator 6, second vibrator 7 and the 3rd vibrator 8 are separately positioned on axial, the radial and circumferential position of numerical control rotating platform.
The numerical control rotating platform testing table load Loading Control System of a kind of simulated condition of inventive embodiments, in load Loading Control System, comprise the hydraulic loading system for simulating static load, for simulating the excitation system of dynamic load and be host computer and PLC by industrial computer being the control system that slave computer forms.Numerical control rotating platform testing table platform in load Loading Control System is the effective object of the load Loading Control System of simulated condition, basic machine primarily of numerical control rotating platform forms, by simulating the loading effect of typical condition, detect the sound state critical performance parameters of numerical control rotating platform under this effect.Be used in the present invention simulating the hydraulic loading system of static load primarily of motor, variable vane pump, proportional pressure-reducing valve and the adjustable controlled hydraulic loaded loop of solenoid directional control valve decomposition pressure, in the axis of numerical control rotating platform basic machine, radial direction and circumference install hydraulic cylinder respectively, the high pressure liquid force feed logarithm control turntable body three-dimensional utilizing hydraulic loaded loop to produce loads, to simulate the static load that numerical control rotating platform bears in actual cut operating mode, be used in the present invention simulating the exciter system of dynamic load, according to the loading spectrum preset, steering order is sent by host computer, exciter system reception control signal also produces corresponding exciting force, whole exciter system simulates numerical control rotating platform dynamic force suffered in actual condition by the synergy of three direction vibrators, load Loading Control System is made up of industrial computer and PLC, steering order is issued to load loading system, the running status of system is monitored with the hydraulic cylinder corresponding to control system and vibrator action.See Fig. 1, the fundamental diagram of the numerical control rotating platform testing table load Loading Control System of simulated condition, when carrying out the test of numerical control rotating platform dynamic and static state performance, according to the requirement of test, this control system is carried out the setting of static loading load and is selected the loading spectrum of dynamic load, static loading load passes to PLC after host computer process, and PLC sends steering order to corresponding hydraulic cylinder, completes static load and loads; Similarly, first the dynamic load loading spectrum that selected typical case cuts pattern is processed, extract the typical characteristics of exerting oneself, utilize the algorithm of this control system eigenwert to be changed into corresponding current value to export from the analog output end of High Speed Data Acquisition card, and as the input signal source of vibrator, control signal arrives vibrator through power amplifier, completes the loading of dynamic load.
Shown in accompanying drawing 2, for the structural representation of the embody rule example of the numerical control rotating platform testing table load Loading Control System of a kind of simulated condition of the embodiment of the present invention, wherein, first hydraulic cylinder 1, second hydraulic cylinder 2, 3rd hydraulic cylinder 3 is used for realizing the axis to numerical control rotating platform respectively, radial and circumferential load loads, crow bar 4 is that the circumference in order to realize numerical control rotating platform loads the aid increased, supercharging loads the synergy of cylinder can reappear power suffered when numerical control rotating platform bears workpiece to be processed in actual condition, the loading of static load can study the static properties of numerical control rotating platform easily, being provided with of base for supporting 5 is beneficial to the dynamic load carrying out numerical control rotating platform and loads, first vibrator 6, second vibrator 7, the 3rd vibrator 8 are used for realizing axial, the radial and circumferential load loading to numerical control rotating platform respectively, wherein the use of crow bar 9 can carry out the loading of circumferential load easily, carry out static load loading by associating hydraulic loaded cylinder during actual tests, the stressed situation of numerical control rotating platform under difference processing operating mode can be reappeared.
Embodiment two.
A kind of numerical control rotating platform testing table load Loading Control System of simulated condition, it is characterized in that: comprise the hydraulic loading system of simulation static load, the simulation excitation system of dynamic load and the control system of load simulated loading, the hydraulic loaded turnkey of described simulation static load draws together motor, variable vane pump, proportional pressure-reducing valve and solenoid directional control valve, and the adjustable controlled hydraulic loaded loop of decomposition pressure thus; The excitation system of described simulation dynamic load comprises power amplifier, high energy activator and pressure transducer; The control system of described load simulated loading comprises host computer industrial computer and PLC slave computer.
The hydraulic loading system of described simulation static load also comprises fuel tank, air strainer, liquid level gauge, oil absorption filter, high pressure filter, well heater, high-pressure ball valve, liquid level relay, metallic thermometer, tubular type retaining valve, surplus valve, superposing type throttling valve, tensimeter, pressure transducer and accurate oil cooling unit, motor is rotated by shaft coupling connecting fluid pressure oil pump, hydraulic oil pump connects fuel tank by inlet line, fuel tank is through retaining valve, surplus valve, high pressure filter, proportional pressure-reducing valve, electro-hydraulic proportion reversing valve, and loading hydraulic cylinder is connected to after superposing type throttling valve.
The hydraulic loading system of described simulation static load comprises the first hydraulic cylinder 1, second hydraulic cylinder 2, the 3rd hydraulic cylinder 3, first vibrator 6, second vibrator 7 and the 3rd vibrator 8, first hydraulic cylinder 1, second hydraulic cylinder 2, the 3rd hydraulic cylinder 3 are arranged on the axial, radial of numerical control rotating platform and circumferential direction respectively, and the first vibrator 6, second vibrator 7 and the 3rd vibrator 8 are separately positioned on axial, the radial and circumferential position of numerical control rotating platform.
A numerical control rotating platform testing table load loading control method for simulated condition, comprises the following steps:
Step 1: install hydraulic cylinder respectively by the hydraulic loading system of simulating static load on the axial, radial of numerical control rotating platform basic machine and circumference, the high pressure liquid force feed logarithm control turntable body three-dimensional utilizing hydraulic loaded loop to produce loads, to simulate the static load that numerical control rotating platform bears in actual cut operating mode;
Step 2: by simulating the excitation system of dynamic load, according to the loading spectrum preset, issue steering order to vibrator, produce corresponding exciting force, simulate numerical control rotating platform dynamic force suffered in actual cut process by the synergy of three direction vibrators;
Step 3: be host computer and PLC by the control system of load simulated loading by industrial computer be that slave computer forms, host computer controls sending instructions under the PLC in described control system, to control hydraulic cylinder and the vibrator action of described system.
Described step 1 specifically comprises the following steps:
By the effect of loading hydraulic cylinder, give numerical control rotating platform work top loading force, when giving solenoid directional control valve and applying command voltage signal, proportional reversing valve is by changing spool displacement, change hydraulic oil to flow to, realize the control of described loading hydraulic cylinder direction of motion, when giving proportional pressure-reducing valve and applying command voltage signal, by the effect of pressure spring, the pressure reduction at reduction valve two ends is changed, the force value of the hydraulic oil exported is converted, the static load realized under different operating mode loads, in the axis of turntable body, radial direction and circumference install hydraulic cylinder respectively, the high pressure liquid force feed utilizing hydraulic circuit to produce loads turntable body three-dimensional, with the static load that simulating turntable bears in actual cut operating mode.
Described step 3 specifically comprises the following steps:
Host computer controls sending instructions under the PLC in the control system of described load simulated loading, the control software design of host computer is according to the requirement of actual tests, select suitable loading spectrum and after treatment corresponding control command signal sent to hydraulic loading system and exciter system, and the feedback information collected and loading spectrum are compared, carry out algorithm compensation, make static load loading and dynamic load load consistent with actual condition as far as possible.
Particularly, shown in accompanying drawing 3, for the static load hydraulic loading system workflow diagram of the embody rule example of the numerical control rotating platform testing table load Loading Control System of a kind of simulated condition of the embodiment of the present invention, during test, according to testing requirements, the setting of static load is carried out in host computer, and provide the control signal of loading hydraulic cylinder action, control signal arrives PLC through order wire, PLC performs corresponding program code, and provide the electric components generation action that command signal makes in switch board, the control signal that PLC exports is after proportional amplifier plate, signal energy and intensity are obtained for lifting to a certain degree, drive proportional pressure-reducing valve action, Hydraulic Station exports the hydraulic oil meeting pressure requirements, pressure transducer work now in control system, and the pressure signal collected is fed back in the control system of PC, compare with the value preset, if any deviation, the signal value of the algorithm meeting auto-adjustment control hydraulic system in control system is until the force value of actual output and the value of setting are in deviation allowed band, so far static load has loaded.
As shown in Figure 4, for the static load hydraulic loading system fundamental diagram of the embody rule example of the numerical control rotating platform testing table load Loading Control System of a kind of simulated condition of the embodiment of the present invention, after motor receives command signal, the action of control variable vane pump, hydraulic oil with certain pressure flows through retaining valve, filtrator, proportional pressure-reducing valve (control system regulates the openings of sizes of proportional pressure-reducing valve according to the force value preset), high-pressure oil flow is after solenoid directional control valve, hydraulic control loads cylinder action, wherein the openings of sizes of proportional pressure-reducing valve is that the voltage signal exported by proportional amplifier plate controls, metallic thermometer is furnished with to observe the oil temperature of hydraulic oil in hydraulic system, and be equipped with oil cooling machine to control the oil temperature in whole hydraulic system, is furnished with liquid level relay to monitor the volume of hydraulic oil in fuel tank, when the amount of hydraulic oil does not satisfy condition, alerting signal can be sent.
As shown in Figure 5, for the dynamic load exciting loading system fundamental diagram of the embody rule example of the numerical control rotating platform testing table load Loading Control System of a kind of simulated condition of the embodiment of the present invention, before test, first the power utilizing six-component sensor to record numerical control rotating platform under different operating mode to bear, and these data editions are become loading spectrum, during concrete test, according to testing requirements, call the loading spectrum satisfied condition in storehouse, control system is edited this loading spectrum, arrange, and extract eigenwert, through conversion, take high-speed data acquisition card as carrier, the current signal changing into standard exports, through the amplification of power amplifier, and pass to vibrator as input signal, consider that current signal has decay and loss in the process of transmission, the signal received by vibrator feeds back in control system as value of feedback, and rely on the algorithm in system to compensate control signal, until when the input signal of vibrator and the deviation of setting value are in allowed band, vibrator action, produce corresponding dynamic force, realize numerical control rotating platform testing table dynamic load to load.
These are only embodiments of the invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the numerical control rotating platform testing table load Loading Control System of a simulated condition, it is characterized in that: comprise the hydraulic loading system of simulation static load, the simulation excitation system of dynamic load and the control system of load simulated loading, the hydraulic loaded turnkey of described simulation static load draws together motor, variable vane pump, proportional pressure-reducing valve and solenoid directional control valve, and the adjustable controlled hydraulic loaded loop of decomposition pressure thus, the excitation system of described simulation dynamic load comprises power amplifier, high energy activator and pressure transducer, the control system of described load simulated loading comprises host computer industrial computer and PLC slave computer, the hydraulic loading system of described simulation static load also comprises fuel tank, air strainer, liquid level gauge, oil absorption filter, high pressure filter, well heater, high-pressure ball valve, liquid level relay, metallic thermometer, tubular type retaining valve, surplus valve, superposing type throttling valve, tensimeter, pressure transducer and accurate oil cooling unit, motor is rotated by shaft coupling connecting fluid pressure oil pump, hydraulic oil pump connects fuel tank by inlet line, fuel tank is through retaining valve, surplus valve, high pressure filter, proportional pressure-reducing valve, electro-hydraulic proportion reversing valve, and loading hydraulic cylinder is connected to after superposing type throttling valve, the hydraulic loading system of described simulation static load comprises the first hydraulic cylinder (1), the second hydraulic cylinder (2), the 3rd hydraulic cylinder (3), the first vibrator (6), the second vibrator (7) and the 3rd vibrator (8), first hydraulic cylinder (1), the second hydraulic cylinder (2), the 3rd hydraulic cylinder (3) are arranged on the axial, radial of numerical control rotating platform and circumferential direction respectively, and the first vibrator (6), the second vibrator (7) and the 3rd vibrator (8) are separately positioned on axial, the radial and circumferential position of numerical control rotating platform.
2. a numerical control rotating platform testing table load loading control method for simulated condition, is characterized in that: comprise the following steps:
Step 1: install hydraulic cylinder respectively by the hydraulic loading system of simulating static load on the axial, radial of numerical control rotating platform basic machine and circumference, the high pressure liquid force feed logarithm control turntable body three-dimensional utilizing hydraulic loaded loop to produce loads, to simulate the static load that numerical control rotating platform bears in actual cut operating mode;
Step 2: by simulating the excitation system of dynamic load, according to the loading spectrum preset, issue steering order to vibrator, produce corresponding exciting force, simulate numerical control rotating platform dynamic force suffered in actual cut process by the synergy of three direction vibrators;
Step 3: be host computer and PLC by the control system of load simulated loading by industrial computer be that slave computer forms, host computer controls sending instructions under the PLC in described control system, to control hydraulic cylinder and the vibrator action of described system.
3. the numerical control rotating platform testing table load loading control method of a kind of simulated condition according to claim 2, it is characterized in that, described step 1 specifically comprises the following steps:
By the effect of loading hydraulic cylinder, give numerical control rotating platform work top loading force, when giving solenoid directional control valve and applying command voltage signal, proportional reversing valve is by changing spool displacement, change hydraulic oil to flow to, realize the control of described loading hydraulic cylinder direction of motion, when giving proportional pressure-reducing valve and applying command voltage signal, by the effect of pressure spring, the pressure reduction at reduction valve two ends is changed, the force value of the hydraulic oil exported is converted, the static load realized under different operating mode loads, in the axis of turntable body, radial direction and circumference install hydraulic cylinder respectively, the high pressure liquid force feed utilizing hydraulic circuit to produce loads turntable body three-dimensional, with the static load that simulating turntable bears in actual cut operating mode.
4. the numerical control rotating platform testing table load loading control method of a kind of simulated condition according to claim 2, it is characterized in that, described step 3 specifically comprises the following steps:
Host computer controls sending instructions under the PLC in the control system of described load simulated loading, the control software design of host computer is according to the requirement of actual tests, select suitable loading spectrum and after treatment corresponding control command signal sent to hydraulic loading system and exciter system, and the feedback information collected and loading spectrum are compared, carry out algorithm compensation, make static load loading and dynamic load load consistent with actual condition as far as possible.
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| CN102980755A (en) * | 2012-11-16 | 2013-03-20 | 北京工业大学 | Quantitive type experimental device for dynamic and static performances of static-pressure rotary table |
| CN203204459U (en) * | 2013-04-19 | 2013-09-18 | 南京工业大学 | Loading control system for simulating loads on test bench of numerical control rotatory table in operating conditions |
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2013
- 2013-04-19 CN CN201310139177.5A patent/CN103235605B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120068196A (en) * | 2010-12-17 | 2012-06-27 | 두산인프라코어 주식회사 | Rotary table device for direct drive |
| CN102980755A (en) * | 2012-11-16 | 2013-03-20 | 北京工业大学 | Quantitive type experimental device for dynamic and static performances of static-pressure rotary table |
| CN203204459U (en) * | 2013-04-19 | 2013-09-18 | 南京工业大学 | Loading control system for simulating loads on test bench of numerical control rotatory table in operating conditions |
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| Title |
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| 某型航空轴承试验台液压加载系统研究;陈鹤梅;《工程科技II辑》;20110331(第3期);第23-29页 * |
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| CN103235605A (en) | 2013-08-07 |
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