CN103645064A - Electromechanical coupling performance test board of feeding shaft of numerical control machine tool - Google Patents
Electromechanical coupling performance test board of feeding shaft of numerical control machine tool Download PDFInfo
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- CN103645064A CN103645064A CN201310724883.6A CN201310724883A CN103645064A CN 103645064 A CN103645064 A CN 103645064A CN 201310724883 A CN201310724883 A CN 201310724883A CN 103645064 A CN103645064 A CN 103645064A
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Abstract
An electromechanical coupling performance test board of a feeding of a numerical control machine tool relates to the field of performance testing of numerical control machine tool servo feeding systems. The electromechanical coupling performance test board of the feeding shaft of the numerical control machine tool comprises a test board body, a control and driving system, a loading system and a data collecting and analyzing system, wherein the test board body is made of high-rigidity gray iron; the control and driving system is mainly composed of a numerical control system, a servo driver, a servo motor and a power source module; the loading system is mainly composed of a torque loader, a rotation shaft, a code disc assembly and the like; the data collecting and analyzing system is mainly composed of a rotary encoder, a encoder data collecting card, a torque sensor, a servo motor current sensor, a servo motor rotation speed sensor and an industrial personal computer. The electromechanical coupling performance test board of the feeding shaft of the numerical control machine tool solves the problem of unstability due to mismatching of the parameter optimization and servo control system and a mechanical transmission system of a servo system.
Description
Technical field
The present invention relates to the performance test field of Servo feeding System of NC Machine Tools, be specially a kind of numerically-controlled machine feed shaft mechanical-electric coupling performance test bed.
Background technology
The servo parameter optimization of Numerically controlled machine is a more difficult problem, in the process of debugging in the servo-drive system of lathe, the default parameters of the given one group of debugging axle of system meeting, but these parameters are generally the more conservative parameters arranging for the normal operation of assurance system, can not meet at a high speed, high efficiency processing request.In addition, the vibration of numerically-controlled machine is also a difficult point in numerically-controlled machine debugging.Except the vibration causing due to mesomerism, the unstability causing of not mating of servo-control system and machine driven system is also a principal element.The power output of motor or moment of torsion are unique physical quantitys that contact connects mechanical system and NC servo-drive system, and its time domain frequency domain character directly has influence on the crudy of mechanical system.Mechanical system is as a complicated dynamical system, and the real-time change of its mechanical property can cause the real-time change of natural frequency, and this just requires the frequency content of moment to make the unstability that system is avoided in corresponding variation.Yet, directly measure moment of torsion is difficult for realizing in commercial production, if research obtains the relation between servo current and motor output torque, just can obtain moment of torsion by indirect measurement electric current, by adjusting the frequency distribution of electric current, motor output torque and mechanical system are matched and just can realize high crudy; Need thus a special-purpose numerically-controlled machine feed shaft mechanical-electric coupling performance test bed, for completing each parameter measurement.
Summary of the invention
The object of the present invention is to provide a kind of numerically-controlled machine feed shaft mechanical-electric coupling performance test bed, be used for parameter measurement, for measurement data, analyze, obtain the relation between servo current and motor output torque, so solve servo parameter optimization and servo-control system and machine driven system do not mate the destabilization problems causing.
The object of the invention is to be achieved through the following technical solutions: numerically-controlled machine feed shaft mechanical-electric coupling is performance test bed, comprise test board stage body, control and drive system, load system and data acquisition and analytic system; It is characterized in that: described control and drive system comprise digital control system, servo-driver and servomotor; Load system comprises torque loader, rotating shaft and code-disc assembly; Data acquisition and analytic system comprise rotary encoder, built-in built-in electric current, speed probe and the industrial computer of data collecting card, torque sensor, servomotor of scrambler; Servomotor, torque loader, rotating shaft, code-disc assembly, rotary encoder, torque sensor are arranged on test board stage body; Servomotor connects with torque sensor, the first scrambler, code-disc assembly, the second scrambler, torque loader successively by central rotating shaft, and servo-driver is controlled by digital control system, drives servomotor to drive the rotating shaft of test board stage body to rotate.
Described code-disc assembly comprises the code-disc of 3 different qualities.Each code-disc is comprised of two semi-discs, by bolt-connection, is fastened in rotating shaft, and code-disc both sides are provided with code-disc support.
Described code-disc and code-disc support are realized the change of axial location by the T-shaped groove on test board base; Code-disc support connects with test board base by adjusting pad, realizes the adjusting of each code-disc height.
Described rotating shaft end connects with torque loader by shaft coupling, below the base of torque loader, has adjusting pad.
Described industrial computer gathers the data of rotary encoder by high-speed counting card, the data that gather torque sensor by special-purpose torque sensor signal acquisition software, realize data analysis by the rotating speed of the rotating speed of the servomotor collecting, output torque, electric current and code-disc assembly, angular error data by built-in analysis software.
Described data acquisition and analytic system, the rotating speed of the rotating speed of servomotor, output torque, electric current and code-disc assembly, angular error data are carried out to time and frequency domain analysis, according to the servo parameter of formulating, optimize index, carry out the parameter optimization of feed shaft servo-drive system.By the natural frequencies analysis to control signal and mechanical system, judgement servo-control system and machine driven system do not mate the cause of destabilization causing.
Beneficial effect of the present invention:
1, by performance test bed data test and the analysis of numerically-controlled machine feed shaft mechanical-electric coupling, can carry out providing reference frame for the servo parameter optimization of Numerically controlled machine.Develop rational servo parameter Optimizing Flow and evaluation method, suitable servo parameter is set, make lathe on existing machinery architecture basics, improve as far as possible its dynamic property;
2, by performance test bed data test and the analysis of numerically-controlled machine feed shaft mechanical-electric coupling, can grasp time-domain and frequency-domain relation between servo current and motor output torque, time-domain and frequency-domain relation between digital control system reference instruction and input instruction, time-domain and frequency-domain relation between servo-drive system input reference instruction and servo output current, NC instruction and the servo parameter control action to servo current main frequency composition, control strategy in mechanical property real-time change situation etc., the resonance problem that elimination or minimizing lathe Mechatronic Systems interact and cause;
3, by performance test bed data test and the analysis of numerically-controlled machine feed shaft mechanical-electric coupling, can disclose coupling essence and the rule of complex electromechanical systems, set up Integrated design theory and method, for the optimal design of numerically-controlled machine and other Mechatronic Systems provides foundation.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention.
Fig. 2 is test board agent structure front view of the present invention.
Fig. 3 is test board agent structure vertical view of the present invention.
In figure, 1 Filled Iron for Vibration Damping; 2 test board stage bodies; 3 electric machine supports; 4 servomotors; 5 first shaft couplings; 6 torque sensors; 7 second shaft couplings; 8 first scramblers; 9 rotating shaft fore-stocks; 10 code-discs; 11 code-disc supports; 12 rotating shafts; 13 rotating shaft after-poppets; 14 second scramblers; 15 the 3rd shaft couplings; 16 torque loaders; 17 industrial computers; 18 digital control systems; 19 servo-drivers.
Embodiment
A kind of numerically-controlled machine feed shaft mechanical-electric coupling is performance test bed, comprises test board stage body 2, control and drive system, load system and data acquisition and analytic system; Control and drive system comprise digital control system 18, servo-driver 19, servomotor 4 and power module; Load system comprises torque loader 16, rotating shaft 12 and code-disc assembly; Data acquisition and analytic system comprise rotary encoder, built-in built-in electric current, speed probe and the industrial computer 17 of data collecting card, torque sensor 6, servomotor 4 of scrambler.
Its concrete assembly relation as shown in Figure 1 to Figure 3, test board stage body 2 consists of high rigidity casting pig, test board stage body 2 is installed on ground by 12 Filled Iron for Vibration Damping 1, test board stage body 2 upper surfaces are provided with T-shaped groove structure, electric machine support 3, torque sensor 6, rotating shaft fore-stock 9, code-disc support 11, rotating shaft after-poppet 13, torque loader 16 is bolted on respectively on test board stage body 2, rotating shaft 12 is placed on rotating shaft fore-stock 9, on rotating shaft after-poppet 13, pass through bearings, servomotor 4 is placed on electric machine support 3, be positioned at one end of rotating shaft 12, servomotor 4 is connected with torque sensor 6 by the first shaft coupling 5, torque sensor 6 is connected with the first scrambler 8 by the second shaft coupling 7.Code-disc assembly comprises the code-disc 10 of 3 different qualities.Each code-disc 10 is comprised of two semi-discs, by bolt-connection, is fastened in rotating shaft 12, and code-disc 10 both sides are provided with code-disc support 11, and code-disc support 13 connects with the base of test board by adjusting pad, realizes the adjusting of each code-disc height.The second scrambler 14, the second scramblers 14 are installed at rotating shaft after-poppet 13 rear portions and by the 3rd shaft coupling 15, are connected with torque loader 16, below the base of torque loader 16, have adjusting pad, realize the centering of torque loader output shaft and rotating shaft.
When operating numerical control system 18, instruction is controlled servomotor 4 by servo-driver 19 and is rotated, and servomotor 4 drives the rotating shaft 12 of test board stage body to rotate, and control torque loader 16 can be realized the variation of load simultaneously.The position of three code-discs 10 can change vertically, realizes the adjusting of load.
Claims (6)
1. numerically-controlled machine feed shaft mechanical-electric coupling is performance test bed, comprises test board stage body, control and drive system, load system and data acquisition and analytic system; It is characterized in that: described control and drive system comprise digital control system, servo-driver and servomotor; Load system comprises torque loader, rotating shaft and code-disc assembly; Data acquisition and analytic system comprise rotary encoder, built-in built-in electric current, speed probe and the industrial computer of data collecting card, torque sensor, servomotor of scrambler; Servomotor, torque loader, rotating shaft, code-disc assembly, rotary encoder, torque sensor are arranged on test board stage body; Servomotor connects with torque sensor, the first scrambler, code-disc assembly, the second scrambler, torque loader successively by central rotating shaft, and servo-driver is controlled by digital control system, drives servomotor to drive the rotating shaft of test board stage body to rotate.
2. performance test bed according to numerically-controlled machine feed shaft mechanical-electric coupling claimed in claim 1, it is characterized in that: described code-disc assembly comprises the code-disc of 3 different qualities; Each code-disc is comprised of two semi-discs, by bolt-connection, is fastened in rotating shaft, and code-disc both sides are provided with code-disc support.
3. performance test bed according to numerically-controlled machine feed shaft mechanical-electric coupling claimed in claim 2, it is characterized in that: described code-disc and code-disc support are realized the change of axial location by the T-shaped groove on test board base; Code-disc support connects with test board base by adjusting pad, realizes the adjusting of each code-disc height.
4. performance test bed according to numerically-controlled machine feed shaft mechanical-electric coupling claimed in claim 1, it is characterized in that: described rotating shaft end connects with torque loader by shaft coupling, below the base of torque loader, has adjusting pad.
5. performance test bed according to numerically-controlled machine feed shaft mechanical-electric coupling claimed in claim 1, it is characterized in that: described industrial computer gathers the data of rotary encoder by high-speed counting card, the data that gather torque sensor by special-purpose torque sensor signal acquisition software, realize data analysis by the rotating speed of the rotating speed of the servomotor collecting, output torque, electric current and code-disc assembly, angular error data by built-in analysis software.
6. performance test bed according to numerically-controlled machine feed shaft mechanical-electric coupling claimed in claim 1, it is characterized in that: described data acquisition and analytic system, the rotating speed of the rotating speed of servomotor, output torque, electric current and code-disc assembly, angular error data are carried out to time and frequency domain analysis, according to the servo parameter of formulating, optimize index, carry out the parameter optimization of feed shaft servo-drive system; By the natural frequencies analysis to control signal and mechanical system, judgement servo-control system and machine driven system do not mate the cause of destabilization causing.
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| CN201310724883.6A CN103645064A (en) | 2013-12-25 | 2013-12-25 | Electromechanical coupling performance test board of feeding shaft of numerical control machine tool |
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| CN104834271A (en) * | 2015-06-03 | 2015-08-12 | 上海理工大学 | Direct feeding shaft servo parameter optimization method based on dynamic stiffness evaluation |
| CN105092228A (en) * | 2015-08-26 | 2015-11-25 | 华中科技大学 | Transmission switching apparatus |
| CN105574058A (en) * | 2014-11-06 | 2016-05-11 | 财团法人资讯工业策进会 | Power consumption prediction system and method for machine tool |
| CN106197980A (en) * | 2016-08-01 | 2016-12-07 | 四川绵阳三力股份有限公司 | A kind of axle class rotational stiffness detection equipment |
| CN109542045A (en) * | 2018-12-21 | 2019-03-29 | 机械工业仪器仪表综合技术经济研究所 | Numerically-controlled machine tool predictive maintenance standard testing bed and operating method |
| CN112179593A (en) * | 2020-08-28 | 2021-01-05 | 武汉华中数控股份有限公司 | Servo system static rigidity test bench and test method |
| CN113732784A (en) * | 2021-08-23 | 2021-12-03 | 深圳华数机器人有限公司 | Model selection matching method for servo motor of numerical control machine tool |
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| CN112179593A (en) * | 2020-08-28 | 2021-01-05 | 武汉华中数控股份有限公司 | Servo system static rigidity test bench and test method |
| CN113732784A (en) * | 2021-08-23 | 2021-12-03 | 深圳华数机器人有限公司 | Model selection matching method for servo motor of numerical control machine tool |
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Application publication date: 20140319 |