CN102527743A - Online real-time torque detection and control system for self-lubricating spherical plain bearings and method thereof - Google Patents
Online real-time torque detection and control system for self-lubricating spherical plain bearings and method thereof Download PDFInfo
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- CN102527743A CN102527743A CN2011104563204A CN201110456320A CN102527743A CN 102527743 A CN102527743 A CN 102527743A CN 2011104563204 A CN2011104563204 A CN 2011104563204A CN 201110456320 A CN201110456320 A CN 201110456320A CN 102527743 A CN102527743 A CN 102527743A
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Abstract
The invention discloses an online real-time torque detection and control system for self-lubricating spherical plain bearings and a method thereof, which are used for the rolling clearance process of bearings. A dynamic torque sensor is connected to a bearing to be detected, detected bearing torque signals are transmitted to be collected, processed, displayed and record by a signal processing device, the signal processing device transmits the signals to a rolling clearance operation control system to control clamping pressure of rollers onto the bearing to be detected and voltage applied to a direct-current motor and revolution speed thereof, and a unidirectional bearing is connected between the dynamic torque sensor and the direct-current motor. By the aid of the dynamic torque sensor connected to the bearing to be detected, standard signals of torque of the self-lubricating spherical plain bearing is acquired actively and corresponding actions of a rolling clearance machine are controlled during the rolling clearance processing, and accordingly active control in product quality and high consistency are realized.
Description
Technical field
The present invention relates to a kind of oscillating bearing, more particularly, relate to a kind of online instant Detection & Controling system and method for moment of rolling play generation of self-lubricating knuckle bearing.
Background technology
One of self-lubricating knuckle bearing critical technical parameter comparatively is exactly the no-load starting moment of friction of product.This moment determines that by product inner ring and the material behavior of this a pair of friction pair of self-lubricating liner own prior decisive factor is the processing result of bearing rolling play operation on the one hand.Traditional processing technology is to add man-hour at product, carries out the test of rolling play in advance, obtains the rolling play technological parameter under the product no-load starting moment acceptance condition, formally produces subsequently.Owing to lack instant detection, the control device of the no-load starting moment that adds the product in man-hour, can't in time feed back to rolling installation and adjust in real time by testing result.Therefore, batch product uniformity of product no-load starting moment and the uniformity of single-piece exist the big gap of comparing with external like product.
Summary of the invention
The present invention is for solving the technical problem that exists in the above-mentioned prior art; Provide a kind of self-lubricating knuckle bearing online instant Detection & Controling system and method; Through being connected in the dynamic force moment sense measuring device on the measured bearing, in the process of rolling play, initiatively obtain the signal up to standard of product no-load starting moment; And the corresponding actions of control rolling play machine, realize the product quality ACTIVE CONTROL and obtain better conforming target.
For achieving the above object, the technical scheme that the present invention adopts is following:
The online instant Detection & Controling of a kind of self-lubricating knuckle bearing moment system; Be used for bearing rolling play manufacturing procedure; On measured bearing, connect a dynamic force moment sensor; The bearing moment signal that it records is transferred to that signal handling equipment is collected, handled, demonstration and record; Signal handling equipment is transferred to rolling play operation control system with this signal, is used for controlling that roll nip is held in the pressure size on the measured bearing and the voltage that is applied on the direct current generator is big or small with rotating speed, between said dynamic force moment sensor and direct current generator, connects a unilateral bearing.
The online instant Detection & Controling method of a kind of self-lubricating knuckle bearing moment is characterized in that, adopts the online instant Detection & Controling of self-lubricating knuckle bearing moment as claimed in claim 1 system, may further comprise the steps:
1) preparatory stage
The rolling play is initial; Roll is accepted the pressure contact measured bearing product that is bordering on " no-load " only to reach clamp axis, and drives the measured bearing Internal and external cycle because of the rotation synchronously of no play, and direct current generator rotates to be lower than above-mentioned speed in the same way; Under the unilateral bearing effect; Be equivalent to direct current arbor and dynamic torque sensor axle " disengagement ", at this moment, the dynamic force moment sensor measurement is output as zero;
2) the rolling play stage
Roll stresses on the measured bearing gradually, and operation gets into the rolling play stage:
● the rolling starting stage
Direct current generator is applied superimposed voltage to be ordered about its rotating speed and is elevated to certain value; Under the unilateral bearing effect, direct current generator is the system drive source, and measured bearing becomes load source; The dynamic force moment sensor detects measured bearing moment; Much larger than the no-load starting moment higher limit of product requirement or Torque Control protection setting value when above, superimposed voltage reduces on the direct current generator like its value, and rotating speed reduces;
● rolling play working stage
In later stage rolling starting stage; When the dynamic force moment sensor is lower than the measured bearing no-load starting moment of friction higher limit of setting as detecting the measured bearing moment of friction; System gets into rolling play working stage: operation control system is controlled servo loading roll pressurization rolling measured bearing play, and superimposed voltage on the direct current generator and rotating speed rise, under the unilateral bearing effect; Direct current generator connects with dynamic force moment sensor " firmly "; And in direct current generator driving, measured bearing moment is under the acting in conjunction of loading moment, and dynamic torque sensor is gathered the moment of measured bearing, and signal handling equipment is drawn the moment variations curve;
3) the running-in stage
When detecting the measured bearing moment values and drop to the moment lower limit of setting, nip pressure is released into and approaches " no-load " force value, and the measured bearing inner ring is under direct current generator drives, to be higher than its outer ring rotating speed continuous running a period of time;
4) test phase
Running-in finishes; Direct current generator and roll stop operating simultaneously; Roll keeps " no-load " pressure clamping measured bearing, and system gets into test phase, and the dynamic force moment sensor is under direct current generator drives; When moment when measuring measured bearing no-load starting inner ring and follow-up rotation and the slip moment between the self-lubricating liner, and draw whole moment variations curve by signal handling equipment; Test finishes, and roll breaks away from measured bearing, and direct current generator quits work, and whole rolling play operation finishes.
The said rolling starting stage applies the triangular wave superimposed voltage that frequency is about 5Hz to direct current generator, and the moment more than direct current generator raising speed to measured bearing inner ring rotation critical speed, the dynamic force moment sensor detects the measured bearing moment of this moment.
Technical scheme of the present invention; Will be through being connected in the dynamic force moment sense measuring device on the processed bearing; In the process of rolling play; Initiatively obtain the signal up to standard of product moment, and the corresponding actions of control rolling play machine, realize the product quality ACTIVE CONTROL and obtain better conforming target.Produce the inhomogeneous drawback of the existing single bearing no-load starting moment of product in order to overcome traditional handicraft, the present invention through the automatic operation of control rolling mill, has introduced product " running-in " function in the process of product processing.The present invention has arranged the no-load starting moment of each converted products and the complete online automatic detection and discriminating work step of sliding friction torque at the back segment of product processing.Application of the present invention is expected to technically the quality level for this class bearing of basic change China, provides support.
Description of drawings
Fig. 1 is a system architecture diagram of the present invention;
Fig. 2 is a system architecture sketch map of the present invention;
Fig. 3 is a system works schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
Fig. 1, shown in Figure 2, in bearing rolling play operation, back-up roll 1 and the 8 synergy clampings of servo loading roll also drive measured bearing 2, and the control through rolling play operation control system applies with operating pressure measured bearing 2 in process.When servo loading roll 8 back-up rolls 1 were accepted the pressure contact measured bearing 1 that is bordering on " no-load " only to reach clamp axis, system got into preparation, running-in, test phase.On measured bearing 2, connect a dynamic force moment sensor 3 through shaft coupling 7; The bearing moment signal that records on it is transferred to signal handling equipment 9; Signal handling equipment 9 is used for collecting, handle, showing and write down the torque signals of this measured bearing 2, and this signal is transferred to rolling play operation control system 4.Direct current generator 5 is as the drive source of measuring system, for system provides power.The voltage swing that applies on the direct current generator 5 is controlled according to the detection data of transmission on the signal handling equipment 9 by rolling play operation control system 4, and then the rotating speed size of control direct current generator 5.In the course of the work, servo loading roll 8 size that is applied to the pressure on the measured bearing 2 also is to be controlled according to the detection data of transmission on the signal handling equipment 9 by rolling play operation control system 4 with size back-up roll 1 and rotating speed.Between direct current generator 5 and dynamic force moment sensor 3, connect a unilateral bearing 6 through shaft coupling 7.
Shown in Figure 3 is the fundamental diagram of native system, and the coordinate curve among Fig. 3 is represented nip pressure curve map in the rolling play operation, roll rotational speed curve map, measured bearing inner ring speed curves figure, direct current generator voltage and speed curves figure, measured bearing M curve figure from the top down successively.Among the figure:
T
1No-load starting moment lower limit for product requirement;
T
0No-load starting moment higher limit for product requirement;
T
3Be product Torque Control preset lower limit;
T
CBe product no-load starting moment measured value;
T
2Be Torque Control protection setting value;
In conjunction with Fig. 3, provide systems approach provided by the present invention in detail, comprise that step is following:
1) preparatory stage a:
The rolling play is initial, and roll is accepted the P that is bordering on " no-load " only to reach clamp axis
0Pressure contacts processed bearing products owing to still do not have play between this product Internal and external cycle this moment, inner ring with the outer ring with n
1The speed synchronization rotation.Simultaneously, direct current generator is to be lower than n
1Speed (n
2) rotation in the same way.Since the effect of unilateral bearing, motion mutually noninterfere between motor and test product.At this moment, the torque sensor measurement is output as zero.
2) rolling play stage b:
● the rolling starting stage
Roll is forced into operating pressure P gradually
1In processed bearing products, operation gets into the rolling play stage.Simultaneously direct current generator is applied the triangular wave superimposed voltage that frequency is about 5Hz, order about the direct current generator raising speed, to n
1The moment that critical speed is above, unilateral bearing works, and makes direct current generator as system drive mechanism, and measured bearing moment is loading moment.As this moment torque sensor record measured bearing moment, much larger than setting protection value T
2Or the no-load starting moment of friction higher limit T of product requirement
0More than, the direct current generator auxiliary voltage is fallen, and the direct current generator speed of being fallen back is in n
2(＜n
1).
● rolling play working stage
In later stage rolling starting stage, as the moment that records bearing products is lower than the setting moment higher limit T of measured bearing
0The time, system gets into rolling play working stage.At this moment, the superimposed voltage that puts on direct current generator continues to rise to V
3, dc motor speed further rises to n immediately
3(n
3＞n1).Receive the unilateral bearing effect, the dynamic force moment sensor is at direct current generator n
3Rotating speed drives, measured bearing moment is load, and (inner ring of measured bearing is to surpass the outer ring rotation speed n
1N
3The rotating speed rotation) under the acting in conjunction, gathers the moment numerical value of measured bearing, and provide the moment variations curve by computer system.
3) running-in stage c
When the measured bearing moment values drops to setting value T
3The time, rolling mill pressure roller pressure is released into " no-load " (minute loadings clamping) pressure P
0, and under nearly " zero " pressure state, processed bearing inner race is under direct current generator drives, to be higher than its outer ring rotation speed n
1N
3Continuous running a period of time, play the running-in effect of bearing.
4) test phase d
After running-in finished, direct current generator and roll stopped operating simultaneously, but roll is still with " no-load " (minute loadings clamping) pressure P
0The clamping measured bearing.System gets into the product test stage: direct current generator has started driving action, and torque sensor is measured measured bearing no-load starting moment.Motor continues rotation and measures the bearing slip moment, and computer shows whole moment variations curve, and test finishes, and servo loading roll breaks away from product, and direct current generator quits work, the roll stall, and whole rolling play operation finishes.
The online instant Detection & Controling system and method for the disclosed above-mentioned self-lubricating knuckle bearing moment of the present invention; Utilize the convertible properties of the input of dynamic force moment sensor, output shaft definition; Solve in the rolling process, the moment of bearing when Internal and external cycle does not have the play state by the rolling initial stage detects the transfer problem that detects load source when drive source transfers the later stage Internal and external cycle to the play state is arranged.Adopted unilateral bearing; Realize " disengagement " of rolling initial stage direct current generator and dynamic force moment sensor, and in the follow-up rolling process, when system surveys processed bearing moment; Direct current generator becomes the detection drive source, and with the function of transmission of power to dynamic force moment sensor power shaft.System has introduced Internal and external cycle " running-in " technology of processed bearing " no-load " (under the minute loadings clamping) in the rolling process.Rolling latter stage, system carries out the online startup of product by inactive state, detects the slip moment in no-load starting moment and the product inner ring rotation process, differentiates the dynamic mass of product comprehensively.
Claims (3)
1. the online instant Detection & Controling of self-lubricating knuckle bearing moment system is used for bearing rolling play manufacturing procedure.It is characterized in that: on measured bearing, connect a dynamic force moment sensor, the bearing moment signal that it records is transferred to that signal handling equipment is collected, handled, demonstration and record; Signal handling equipment is transferred to rolling play operation control system with this signal, is used for controlling roll nip and is held in the pressure size on the measured bearing and is applied to voltage and the rotating speed size on the direct current generator; Between said dynamic force moment sensor and direct current generator, connect a unilateral bearing.
2. online instant Detection & Controling method of self-lubricating knuckle bearing moment.It is characterized in that: adopt the online instant Detection & Controling of self-lubricating knuckle bearing moment as claimed in claim 1 system, may further comprise the steps:
1) preparatory stage
The rolling play is initial; Roll is accepted the pressure contact measured bearing product that is bordering on " no-load " only to reach clamp axis, and drives the measured bearing Internal and external cycle because of the rotation synchronously of no play, and direct current generator rotates to be lower than above-mentioned speed in the same way; Under the unilateral bearing effect; Be equivalent to direct current arbor and dynamic torque sensor axle " disengagement ", at this moment, the dynamic force moment sensor measurement is output as zero;
2) the rolling play stage
Roll stresses on the measured bearing gradually, and operation gets into the rolling play stage:
A) the rolling starting stage
Direct current generator is applied superimposed voltage to be ordered about its rotating speed and is elevated to certain value; Under the unilateral bearing effect, direct current generator is the system drive source, and measured bearing becomes the system load source; The dynamic force moment sensor detects measured bearing moment; Much larger than measured bearing no-load starting moment higher limit or Torque Control protection setting value when above, the direct current generator superimposed voltage reduces like its value, and rotating speed reduces;
B) rolling play working stage
In later stage rolling starting stage; When the dynamic force moment sensor was lower than the measured bearing no-load starting moment higher limit of setting as detecting measured bearing moment, system got into rolling play working stage: operation control system is controlled servo loading roll pressurization rolling measured bearing play; Superimposed voltage on the direct current generator and rotating speed rise; Under the unilateral bearing effect; Direct current generator connects with dynamic force moment sensor " firmly "; And in direct current generator driving, measured bearing moment is under the acting in conjunction of loading moment, and dynamic torque sensor is gathered the moment of measured bearing, and signal handling equipment is drawn the moment variations curve;
3) the running-in stage
When detecting the measured bearing moment values and drop to the moment lower limit of setting, nip pressure is released into and approaches " no-load " force value, and the measured bearing inner ring is under direct current generator drives, to be higher than its outer ring rotating speed continuous running a period of time;
4) test phase
Running-in finishes; Direct current generator and roll stop operating simultaneously; Roll keeps " no-load " pressure clamping measured bearing, and system gets into test phase, and the dynamic force moment sensor is under direct current generator drives; When moment when measuring measured bearing no-load starting inner ring and follow-up rotation and the slip moment between the self-lubricating liner, and draw whole moment variations curve by signal handling equipment; Test finishes, and roll breaks away from measured bearing, and direct current generator quits work, and whole rolling play operation finishes.
3. the online instant Detection & Controling method of self-lubricating knuckle bearing moment according to claim 2; It is characterized in that; The said rolling starting stage; Direct current generator is applied the triangular wave superimposed voltage that frequency is about 5Hz, and the moment more than direct current generator raising speed to measured bearing inner ring rotation critical speed, the dynamic force moment sensor detects the measured bearing moment of this moment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110456320.4A CN102527743B (en) | 2011-12-30 | 2011-12-30 | Online real-time torque detection and control system for self-lubricating spherical plain bearings and method thereof |
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|---|---|---|---|
| CN201110456320.4A CN102527743B (en) | 2011-12-30 | 2011-12-30 | Online real-time torque detection and control system for self-lubricating spherical plain bearings and method thereof |
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| CN102527743A true CN102527743A (en) | 2012-07-04 |
| CN102527743B CN102527743B (en) | 2014-12-10 |
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Cited By (5)
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| CN107830068A (en) * | 2017-09-26 | 2018-03-23 | 上海产业技术研究院 | Self-lubricating knuckle bearing moment adjusting method and torque adjusting apparatus |
| CN110285149A (en) * | 2019-07-31 | 2019-09-27 | 江苏希西维轴承有限公司 | A kind of extruding plain radial bearing precision rolling clearance machine |
| CN112881015A (en) * | 2021-01-13 | 2021-06-01 | 上海交通大学 | Measuring point insensitive fault detection method based on bearing force identification |
| CN113770182A (en) * | 2020-06-10 | 2021-12-10 | 宝武特种冶金有限公司 | Online roll gap detection method for seamless steel tube cold rolling mill roll device |
| CN113916279A (en) * | 2021-08-30 | 2022-01-11 | 北京科技大学 | Device for measuring axial rolling force and rotating speed of rolled piece in cross wedge rolling forming process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830068A (en) * | 2017-09-26 | 2018-03-23 | 上海产业技术研究院 | Self-lubricating knuckle bearing moment adjusting method and torque adjusting apparatus |
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| CN113916279A (en) * | 2021-08-30 | 2022-01-11 | 北京科技大学 | Device for measuring axial rolling force and rotating speed of rolled piece in cross wedge rolling forming process |
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| CN102527743B (en) | 2014-12-10 |
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Address after: 201801 No.301 shangxue Road, Malu Town, Jiading District, Shanghai Patentee after: SHANGHAI BEARING TECHNOLOGY Research Institute Address before: 200031 No. 100 Fuxing West Road, Shanghai, Xuhui District Patentee before: SHANGHAI BEARING TECHNOLOGY Research Institute |
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Address after: 201801 No.301 shangxue Road, Malu Town, Jiading District, Shanghai Patentee after: Shanghai Bearing Technology Research Institute Co.,Ltd. Address before: 201801 No.301 shangxue Road, Malu Town, Jiading District, Shanghai Patentee before: SHANGHAI BEARING TECHNOLOGY Research Institute |