CN103884615A - Control system of test stand for testing wear precision of rails - Google Patents
Control system of test stand for testing wear precision of rails Download PDFInfo
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- CN103884615A CN103884615A CN201410114202.9A CN201410114202A CN103884615A CN 103884615 A CN103884615 A CN 103884615A CN 201410114202 A CN201410114202 A CN 201410114202A CN 103884615 A CN103884615 A CN 103884615A
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Abstract
A control system of a test stand for testing wear precision of rails comprises an upper computer and a lower computer communicated with the upper computer through a serial interface, wherein the signal input terminals of the lower computer are respectively connected to the signal output terminal of a frictional force sensor for detecting the frictional force of the rails, the signal output terminal of a load sensor for detecting load capacity of the rails and the signal output terminal of a straightness sensor for detecting the straightness of the rails, the signal output terminals of the lower computer are respectively connected to a main motor driver for driving the main motor running rails to be tested to work, and a secondary motor driver for driving the secondary motor enabling the straightness sensor to move to work. The main motor is a servo motor. The secondary motor is a stepper motor. The frictional force sensor is composed of pressure sensors, the load sensor is composed of load measuring sensors and the straightness sensor is composed of digital micrometers. The frictional and wear performances of rail pairs can be quickly assessed by the control system disclosed by the invention while the attenuation of the straightness caused by wear can be displayed in real time.
Description
Technical field
The present invention relates to a kind of control system.Particularly relate to a kind of way rub accuracy testing bench control system.
Background technology
Precision stability is a Key Performance Indicator of high precision machine tool, and guideway, as the core component of high precision machine tool feed system, has determined feed accuracy and the precision stability energy thereof of lathe.Rail plate pair is support and infeed mean conventional in machine tool system, and rubbing wear is the topmost factor that affects rail plate subtask precision.Under laboratory condition, utilize way rub accuracy testing platform research different materials composition, the polishing machine of different duty parameters and different lubricating condition lower slider guideways and the precision attenuation law being produced by wearing and tearing, this precision stability for research rail plate pair can be significant.
In order easily this testing table to be carried out parameter control accurately and to obtain high-precision experimental result, its corresponding control system is vital.The similar testing machine of domestic production, how its control section is realized by voltage adjustment, and control accuracy difficulty reaches requirement, and its data-handling capacity is poor, and systematic error is large.How to utilize Control System of Microcomputer and bus transmission model to realize real-time control, how automatical and efficient acquisition and processing data and the easy software interface of development and operation, this is the key of lift rail wearing and tearing precision experimental level, and this is also that the present invention makes every effort to the technical matters solving.
Summary of the invention
Technical matters to be solved by this invention is that a kind of way rub accuracy testing bench control system that control accuracy is high, data-handling capacity is strong and automatization level is high that has is provided.
The technical solution adopted in the present invention is: a kind of way rub accuracy testing bench control system, the slave computer that includes host computer and communicate by serial ports with host computer, the signal input part of described slave computer connects respectively the friction force sensor for detection of rail friction power, for detection of the load transducer of guide rail load capacity and for detection of the signal output part of the linearity sensor of guide rail linearity, the signal output part of described slave computer connects respectively the main motor driver of the main machine operation for driving tested guide rail operation, and for driving the auxiliary-motor driver of the auxiliary-motor work that linearity sensor moves.
Described main motor adopts servomotor.
Described auxiliary-motor adopts stepper motor.
Described friction force sensor is to be made up of the pull pressure sensor being arranged in way rub accuracy testing platform, and described friction force sensor is delivered to slave computer by measurement result with the form of analog quantity.
Described load transducer is to be made up of the load measuring cell being arranged in the described load applying module of way rub accuracy testing platform, and described load transducer is delivered to slave computer by measurement result with the form of analog quantity.
Described linearity sensor is to be made up of the digital dial gauge being arranged in the straight line degree measurement module of way rub accuracy testing platform, and described linearity sensor is delivered to slave computer by measurement result with the form of digital quantity.
Way rub accuracy testing bench control system of the present invention, friction and wear behavior that can not only rapid evaluation guideway, and can show in real time the decay of the linearity being brought by wearing and tearing.There is following advantage and good effect:
1, control accuracy is high
Main motor adopts servomotor, with its high-precision speed servo characteristic and higher accurate positioning, makes way rub accuracy testing platform system have the advantages that speed adjustable range is large, running precision is high.Auxiliary-motor adopts stepper motor, has fast response time, feature that repetitive positioning accuracy is high.
2, data-handling capacity is strong
Slave computer receives analog signals, the analog signals of load transducer and the digital signal of linearity sensor of friction force sensor, and signal is carried out to necessary processing.
3, automatization level is high
Host computer is finally realized the control of the motion to major and minor motor by slave computer, to the collection of each data of testing table, and the data that collect are processed, these work all do not need test man's participation to complete, and therefore have very high automatization level.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A cut-open view of Fig. 1;
Fig. 3 is slide block exemplar installing plate partial schematic diagram of the present invention;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the formation block diagram of way rub accuracy testing bench control system of the present invention.
In figure:
1: servomotor; 2: motor mounting plate; 3: shaft coupling; 4: front end panel; 5: ball-screw; 6: guide rail exemplar installing plate; 7: mounting base; 8: guide rail exemplar; 9: slide block exemplar; 10: rear bearing sheet; 11: slide block exemplar installing plate; 12: pull pressure sensor; 13: load adjusting screw; 14: load adjusting nut; 15: load loading spring; 16: digital dial gauge; 17: leading screw; 18: stepper motor; 19: supporting guide; 20: top board is installed; 21: rear thrust plate; 22: load measuring cell; 23: load measuring cell installing plate; 24: front thrust plate; 25: ball-screw nut; 26: feed screw nut top board; 101: host computer; 102: slave computer; 103: friction force sensor; 104: load transducer; 405: linearity sensor; 106: main motor driver; 107: main motor; 108: auxiliary-motor driver; 109: auxiliary-motor.
Embodiment
Below in conjunction with embodiment and accompanying drawing, way rub accuracy testing bench control system of the present invention is described in detail.
Way rub accuracy testing bench control system of the present invention is for a kind of way rub accuracy testing platform.Described way rub accuracy testing platform as shown in Figure 1 to 4, comprises support frame, guideway analog module, load applying module, straight line degree measurement module and friction measurement module.
Described support frame comprises mounting base 7, front end panel 4, rear bearing sheet 10 and top board 20 is installed, described front end panel 4 and described rear bearing sheet 10 vertical being fixed on described mounting base 7 respectively, described installation top board 20 is fixed in the top of described front end panel 4 and described rear bearing sheet 10, and described installation top board 20 is parallel to each other with described mounting base 7.
Described guideway analog module comprises guide rail exemplar installing plate 6, slide block exemplar installing plate 11 and the first screw-drive mechanism, described the first screw-drive mechanism comprises the ball-screw nut 25 and the connected ball-screw 5 that are fixed in described slide block exemplar installing plate 11, described ball-screw 5 is parallel with guide rail exemplar 8, and supported by described front end panel 4 and described rear bearing sheet 10, described ball-screw 5 is driven by main motor, and described main motor is fixed on described mounting base 7.Described guide rail exemplar installing plate 6 is positioned at the below of described slide block exemplar installing plate 11, and is fixed on described mounting base 7.
Described load applying module comprises load loading spring 15, load adjusting screw 13, load adjusting nut 14, load measuring cell 22, load measuring cell installing plate 23, supporting guide 19, supporting guide slide block, front thrust plate 24 and rear thrust plate 21, described load adjusting screw 13 is vertically fixed on the top of described slide block exemplar installing plate 11, described load adjusting nut 14 is connected on described load adjusting screw 13, the top of described load adjusting screw 13 is provided with the top board being coaxially slidably connected with it, described load measuring cell 22 is pressed on described top board, described load measuring cell 22 is arranged on described load measuring cell installing plate 23, described load measuring cell installing plate 23 is fixed on described supporting guide slide block, described supporting guide slide block and described supporting guide 19 are slidably matched, described supporting guide 19 is fixed on described installation top board 20, and parallel with described ball-screw 5, between described top board and described load adjusting nut 14, be clamped with described load loading spring 15, described load loading spring 15 is sleeved on described load adjusting screw 13, described load measuring cell 22 installing plates are provided with front thrust plate 24 and rear thrust plate 21, described front thrust plate 24 and described rear thrust plate 21 are affixed with described slide block exemplar installing plate 11 respectively.
Described straight line degree measurement module comprises digital dial gauge 16, auxiliary-motor and the second screw-drive mechanism, described the second screw-drive mechanism is arranged on described front thrust plate 24, described digital dial gauge 16 is vertical with guide rail exemplar 8, and affixed with the feed screw nut of described the second screw-drive mechanism, the leading screw 17 of described the second screw-drive mechanism is driven by described auxiliary-motor.
Described friction measurement module is made up of pull pressure sensor 12, and one end of described pull pressure sensor 12 is fixed on described slide block exemplar installing plate 11, and the other end is fixed on described ball-screw nut 25.
As shown in Figure 5, way rub accuracy testing bench control system of the present invention, the slave computer being formed by single-chip microcomputer 102 that includes host computer 101 and communicate by serial ports with host computer 101.In the present embodiment, described host computer 101 adopts computing machine, and it is the single-chip microcomputer of STC5A60S2 that described slave computer 102 can adopt model, or the model single-chip microcomputer that is STC12C5A60S2, or the model single-chip microcomputer that is PIC16F877, or the model single-chip microcomputer that is CORE8051.
The signal input part of described slave computer 102 connects respectively for detection of the friction force sensor 103 of rail friction power, for detection of the load transducer 104 of guide rail load capacity and for detection of the signal output part of the linearity sensor 105 of guide rail linearity, the signal output part of described slave computer 102 connects respectively the main motor driver 106 that the main motor 107 for driving tested guide rail operation is worked, and auxiliary-motor driver 108 for driving auxiliary-motor 109 that linearity sensor 105 moves to work.
In the present embodiment, described main motor 107 adopts servomotor, and to be that this servomotor is supporting carry described main motor driver 106.This servomotor, with its high-precision speed servo characteristic and higher accurate positioning, makes way rub accuracy testing platform system have the advantages that speed adjustable range is large, running precision is high.
In the present embodiment, described auxiliary-motor 109 adopts stepper motor, and to be that this stepper motor is supporting carry described auxiliary-motor driver 108.This stepper motor has fast response time, feature that repetitive positioning accuracy is high.
Described friction force sensor 103 is to be made up of the pull pressure sensor being arranged in way rub accuracy testing platform.Described friction force sensor 103 is measured in real time to the friction force between the test exemplar on testing table, and measurement result is delivered to slave computer 102 with the form of analog quantity.
Described load transducer 104 is to be made up of the load measuring cell being arranged in the described load applying module of way rub accuracy testing platform.Described load transducer 104 is measured in real time to the load between bench run exemplar, and measurement result is delivered to slave computer 102 with the form of analog quantity.
Described linearity sensor 105 is to be made up of the digital dial gauge being arranged in the straight line degree measurement module of way rub accuracy testing platform.The action of described linearity sensor 105 is driven by auxiliary-motor, realize with the contact of measuring object with separate, and measurement result is delivered to slave computer 102 with the form of digital quantity.
The course of work of way rub accuracy testing bench control system of the present invention is as follows:
Guide rail exemplar and slide block exemplar are installed on way rub accuracy testing platform and start the operation of way rub accuracy testing platform, slave computer passes through friction force sensor, load transducer and linearity sensor obtain the correlation parameter of the current operation of testing table, and the correlation parameter of the current operation of obtained testing table is sent to host computer by serial mode, host computer sends control signal according to the correlation parameter of received current operation to slave computer, described slave computer receives the control signal of host computer by serial mode, and according to the control signal of host computer respectively by adjusting the control parameter of main motor, change the relative motion state between guide rail exemplar and slide block exemplar, and by adjusting the control parameter of auxiliary-motor, whether control linearity sensor contacts with guide rail exemplar.Described host computer shows the current operational factor of test board in real time.
Claims (6)
1. a way rub accuracy testing bench control system, it is characterized in that, the slave computer (102) that includes host computer (101) and communicate by serial ports with host computer (101), the signal input part of described slave computer (102) connects respectively the friction force sensor (103) for detection of rail friction power, for detection of the load transducer (104) of guide rail load capacity and for detection of the signal output part of the linearity sensor (105) of guide rail linearity, the signal output part of described slave computer (102) connects respectively the main motor driver (106) of main motor (107) work for driving tested guide rail operation, and for driving the auxiliary-motor driver (108) of mobile auxiliary-motor (109) work of linearity sensor (105).
2. way rub accuracy testing bench control system according to claim 1, is characterized in that, described main motor (107) adopts servomotor.
3. way rub accuracy testing bench control system according to claim 1, is characterized in that, described auxiliary-motor (109) adopts stepper motor.
4. way rub accuracy testing bench control system according to claim 1, it is characterized in that, described friction force sensor (103) is to be made up of the pull pressure sensor being arranged in way rub accuracy testing platform, and described friction force sensor (103) is delivered to slave computer (102) by measurement result with the form of analog quantity.
5. way rub accuracy testing bench control system according to claim 1, it is characterized in that, described load transducer (104) is to be made up of the load measuring cell being arranged in the described load applying module of way rub accuracy testing platform, and described load transducer (104) is delivered to slave computer (102) by measurement result with the form of analog quantity.
6. way rub accuracy testing bench control system according to claim 1, it is characterized in that, described linearity sensor (105) is to be made up of the digital dial gauge being arranged in the straight line degree measurement module of way rub accuracy testing platform, and described linearity sensor (105) is delivered to slave computer (102) by measurement result with the form of digital quantity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410114202.9A CN103884615A (en) | 2014-03-25 | 2014-03-25 | Control system of test stand for testing wear precision of rails |
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| CN201410114202.9A CN103884615A (en) | 2014-03-25 | 2014-03-25 | Control system of test stand for testing wear precision of rails |
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| CN201410114202.9A Pending CN103884615A (en) | 2014-03-25 | 2014-03-25 | Control system of test stand for testing wear precision of rails |
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Cited By (3)
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|---|---|---|---|---|
| CN109187328A (en) * | 2018-10-24 | 2019-01-11 | 重庆大学 | A kind of test method of guide rail electrochemical corrosion abrasion |
| CN109304639A (en) * | 2017-07-26 | 2019-02-05 | 巨浪有限公司 | For determining the device of high load capacity position in lathe |
| CN109883864A (en) * | 2018-11-30 | 2019-06-14 | 贾建陵 | The detection device and its detection method of coating on surface of article scratch-resistant and application |
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| CN203432844U (en) * | 2013-08-09 | 2014-02-12 | 珠海联度科技有限公司 | Measurement control circuit of material testing machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109304639A (en) * | 2017-07-26 | 2019-02-05 | 巨浪有限公司 | For determining the device of high load capacity position in lathe |
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| CN109187328A (en) * | 2018-10-24 | 2019-01-11 | 重庆大学 | A kind of test method of guide rail electrochemical corrosion abrasion |
| CN109187328B (en) * | 2018-10-24 | 2021-08-24 | 重庆大学 | Test method for electrochemical corrosion wear of guide rail |
| CN109883864A (en) * | 2018-11-30 | 2019-06-14 | 贾建陵 | The detection device and its detection method of coating on surface of article scratch-resistant and application |
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Application publication date: 20140625 |