CN103148818B - A kind of high accuracy gyroscope motor bearing loading method - Google Patents
A kind of high accuracy gyroscope motor bearing loading method Download PDFInfo
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Abstract
The present invention relates to a kind of high accuracy gyroscope motor bearing loading method, gyro machine loading equipemtn is adopted to realize loading, gyro machine loading equipemtn comprises frame, table top, horizontal guide rail system, rising guide track system, two displacement transducers, air bearings support, counterweight, air spindle, bearing centring sleeve and centering pedestal, the present invention feels relieved with the axle of gyro motor one end, bearing outer ring is located, counterweight is placed in scale pan, on the outer ring of other end bearing, the load (namely preloading) required is applied by air bearing, then the method for variate is adopted to measure size between the two cover bearing outer ring shaft shoulders by calibrated displacement transducer 1 and displacement transducer 2, according to the height dimension of the size apolegamy gyro motor outer rotor measured, ensure preloading after gyro motor assembling, the present invention substantially increases loading accuracy, eliminate loading force not by error that motor bearing center line causes, and improve displacement measurement precision.
Description
Technical field
The present invention relates to a kind of high accuracy gyroscope motor bearing loading method, the high precision that may be used for inertial attitude sensor gyro motor bearing loads, and belongs to gyro motor technical field.
Background technology
Common gyro motor (or being called gyro machine) is generally primarily of bearing, rotor, B-H loop parts and stator component four part composition, and as shown in Figure 1,1 is bearing, and 2 is stator component, and 3 is B-H loop parts, and 4 is rotor.
Wherein motor bearing adopts normal angular contact bearings or end cover type angular contact bearing, is most important in gyro machine and one of the parts of most critical, serves to rotate to ensure and the effect of mounting shell simultaneously.And make rotating part operationally can reach the effect that revolution moment of friction is little as far as possible, running accuracy is high as far as possible, mission life is grown as far as possible.
In order to ensure gyro motor reliable operation, stable performance, long operational time, preloading of gyro motor bearing is a very crucial technological parameter, and its accuracy directly affects the performance of gyro motor.The effect preloaded mainly produces certain predeformation when the original installation of bearing, thus make bearing skip the distortion comparatively megastage at initial stage in actual use, significantly improve the rigidity of support, apply suitable to preload the running accuracy that (be called for short and load) can improve gyro motor rotor to bearing simultaneously, thus improve the combination property of gyro motor.The accurate loading equipemtn of gyro motor can carry out process control to the assembling of gyro motor, improves the installation qualification rate of gyro motor, ensures that gyro motor bearing rigidity, running accuracy, frictional behaviour etc. are in Optimal State.
Domestic at present still do not have the accurate loading equipemtn of gyro motor.The manufacturer of domestic a lot of gyro motor, also the loading problem that a lot of method solves gyro motor is taken, but due to gyro motor bearing to preload magnitude less, precision prescribed is higher, therefore also cannot effective head it off, can only screen by testing targetedly in gyro motor after mounting, which decreasing the installation qualification rate of gyro motor, causing a lot of wastes.
The domestic method taked mainly contains following several at present;
(1) by measuring the method that bearing bulge quantity carries out matching.
This method is in the assembling process of gyro motor, first the bulge quantity of gyro motor bearing is measured, then calculating according to the bulge quantity of bearing and the inner and outer rotors size of gyro motor, ensureing to apply preloading of setting to bearing by repairing the outer rotor height grinding gyro motor.Then by carrying out a series of performance test to the gyro motor after assembling, the actual of bearing preloads in checking.
Adopt such gyro motor loading process, cause gyro motor bearing loading error very large, excessive when the gyro motor bearing after assembling is loaded with, sometimes too small; Preloading the excessive flexibility of revolution affecting gyro motor, cause unnecessary power attenuation, preload the too small requirement not reaching again rigidity and running accuracy. the installation qualification rate of adopting gyro motor is in this way very low.
(2) by measuring the method for motor end play
This method is in the assembling process of gyro motor.Loaded by the method measuring motor end play, as shown in Figure 2, concrete grammar is: thicker rotor ring is loaded motor, first applies a downward power (equal to preload and deduct motor deadweight) to motor drive shaft, the displacement of recording pen motor axle; Then, a power (equal to preload and add that motor is conducted oneself with dignity) is upwards applied to motor drive shaft, the displacement of recording pen motor axle.Two displacements are added the primary clearance then obtaining motor, can calculate the adjustment amount applying to preload required for motor rotor ring according to the primary clearance of motor.
Adjust motor by the method surveying motor gap to preload, because dimensional measurement is measured by clock gauge, precision is lower, and (dimensional accuracy of such as clock gauge is 1 μm, the rigidity of gyro motor bearing is 250g/ μm, therefore this loading error caused is exactly 250g), and the power applied is not necessarily by motor bearing center line, and precision is subject to the impact of motor axial friction, therefore this Measures compare is rough, can only be used for coarse adjustment and preload.
(3) by measuring the method for low speed friction moment
This method is comparatively large by the impact of low speed friction moment test device precision up till now, and the bearing preload lotus reflected is sometimes excessive, sometimes too small.And the test of low speed friction moment itself also belongs to indirectly testing, moment of friction is also subject to the impact of the factors such as Bearing inner lubricating oil content.Therefore, the method precision at present by measuring low speed friction moment is lower, and cannot provide concrete bearing loading numerical value and precision.
Summary of the invention
The object of this method is the above-mentioned deficiency overcoming prior art, there is provided a kind of high accuracy gyroscope motor bearing loading method, the method adopts precision weights directly to load, and loading accuracy is accurate, eliminate loading force not by the error that motor bearing center line causes, and improve displacement measurement precision.
Above-mentioned purpose of the present invention is mainly achieved by following technical solution:
A kind of high accuracy gyroscope motor bearing loading method, gyro machine loading equipemtn is adopted to realize loading, described gyro motor loading equipemtn comprises erecting bed, displacement measurement system and air bearing loading system, wherein displacement measurement system comprises horizontal guide rail system, rising guide track system, two displacement transducers and adjustment screw, horizontal guide rail system is arranged on erecting bed, rising guide track system is arranged in horizontal guide rail system, adjustment screw and displacement transducer are installed on rising guide track system, rising guide track system realizes moving up and down of displacement transducer, horizontal guide rail system realizes moving horizontally of displacement transducer, adjustment screw carries out micro-positioning regulators to displacement transducer, air bearing loading system comprises air bearings support, counterweight, air spindle, air bearing, bearing centring sleeve and centering pedestal, centering pedestal is arranged on erecting bed, bearing centring sleeve is connected with centering pedestal, air bearings support is connected with air bearing, air spindle through air bearings support and air bearing, and is connected with counterweight, and motor bearing to be measured is between air spindle and bearing centring sleeve, upper end is pushed down by air spindle, lower end by bearings centring sleeve supporting location,
Specific implementation process comprises the steps:
Step (one), first motor standard component to be loaded in the bearing centring sleeve of gyro machine loading equipemtn, and motor standard component and bearing centring sleeve entirety are loaded in centring machine seat; Compressed by motor standard component by air spindle, and apply to preload by counterweight, wherein the quality of counterweight equals to design the quality preloading and deduct air spindle;
Step (two), by adjustment horizontal guide rail system and rising guide track system, the gauge head of two displacement transducers is beaten on the motor standard component shaft shoulder, and the measurement displayed value of two displacement transducers is all within range ability, keep the relative position of two displacement transducer vertical directions not change in measuring process simultaneously, obtain motor standard component shaft shoulder size h, adjust horizontal guide rail system afterwards displacement transducer is moved away, take off motor standard component;
Step (three), by trap after motor bearing to be measured cleaning, and motor bearing to be measured to be loaded in bearing centring sleeve, motor bearing to be measured and bearing centring sleeve are arranged on centring sleeve pedestal;
Step (four), to be compressed by motor bearing to be measured by air spindle, and apply to preload by counterweight, the quality of counterweight equals to design the quality preloading and deduct air spindle;
Step (five), by adjustment horizontal guide rail system and rising guide track system, the gauge head of two displacement transducers is beaten on the motor bearing shaft shoulder to be measured, and the measurement displayed value of two displacement transducers is all within range ability, in measuring process, keep the relative position of two displacement transducer vertical directions not change simultaneously; Obtain motor bearing outer ring shaft shoulder size h ' to be measured;
Step (six), obtain the difference DELTA h of motor bearing outer ring shaft shoulder size h ' to be measured and motor standard component shaft shoulder size h;
Step (seven), the height dimension H of motor outer rotor when difference DELTA h being added motor standard component shaft shoulder size h value can obtain imposed load.
In above-mentioned high accuracy gyroscope motor bearing loading method, gyro machine loading equipemtn comprises two cover displacement measurement systems, i.e. two horizontal guide rail systems, two rising guide track systems, four displacement transducers and two adjustment screws, wherein two displacement transducers are one group, be arranged on the guide rail of a rising guide track system, by adjustment adjustment screw, the measured value sum often organizing displacement transducer in two groups of displacement transducers is made to be tending towards identical.
In above-mentioned high accuracy gyroscope motor bearing loading method, the gauge head of two displacement transducers in step (2), is made to beat in the centre position of the motor standard component shaft shoulder; The gauge head of two displacement transducers is made to beat in the centre position of the motor bearing shaft shoulder to be measured in step (5).
In above-mentioned high accuracy gyroscope motor bearing loading method, rotate motor bearing outer ring to be measured as required after step (6) and carry out multimetering, and find out motor bearing outer ring shaft shoulder size h ' to be measured and the maxima and minima of the difference DELTA h of motor standard component shaft shoulder size h, get the mean value Δ h of described maxima and minima
on average, enter step (7), by Δ h
on averagethe height dimension H of motor outer rotor when obtaining imposed load is added with standard component shaft shoulder size h value.
The present invention compared with prior art has following beneficial effect:
(1) the present invention adopts the gyro machine loading equipemtn of innovative design to load motor bearing, by measuring respectively the shaft shoulder size of motor standard component and motor bearing to be measured, the height dimension of motor outer rotor when getting difference thus determine imposed load, improve displacement measurement precision, eliminate loading force not by the error that motor bearing center line causes, further increase loading accuracy;
(2) the present invention adopts precision weights directly to load in motor bearing loading procedure, substantially increases loading accuracy;
(3) the present invention adopts air spindle to position bearing, eliminates loading force not by error that motor bearing center line causes;
(4) the present invention adopts general high accuracy displacement sensor to measure the distance of the bearing shaft shoulder, improve displacement measurement precision, measured by employing two groups of displacement transducers in measuring process, and multimetering is carried out in swivel bearing outer ring as required, find out maximal value and the minimum value of size between the two cover bearing outer ring shaft shoulders, further increase displacement measurement precision.
Accompanying drawing explanation
Fig. 1 is gyro motor overall construction drawing;
Fig. 2 is that in classic method, gap loading schematic diagram surveyed by gyro motor bearing;
Fig. 3 is that the present invention adopts gyro machine loading equipemtn to carry out motor bearing loading schematic diagram;
Fig. 4 is the present invention's motor bearing erection to be measured schematic diagram;
Fig. 5 is motor standard component schematic diagram of the present invention;
Fig. 6 is gyro machine loading equipemtn centre bearer centring sleeve schematic diagram of the present invention;
Fig. 7 is pedestal schematic diagram of feeling relieved in gyro machine loading equipemtn of the present invention;
Fig. 8 is air spindle schematic diagram in gyro machine loading equipemtn of the present invention;
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Being illustrated in figure 3 the present invention adopts gyro machine loading equipemtn to carry out motor bearing loading schematic diagram, the present invention adopts gyro machine loading equipemtn to realize motor bearing and loads, and gyro machine loading equipemtn is made up of erecting bed 2, displacement measurement system and air bearing loading system three part.Wherein erecting bed 2 comprises frame and table top, provides the mounting interface of equipment components, and ensures the installation site requirement of equipment components.
Displacement measurement system comprises horizontal guide rail system 3, rising guide track system 4, two displacement transducers 5 and adjustment screw 13, horizontal guide rail system 3 is arranged on erecting bed 2, rising guide track system 4 is arranged in horizontal guide rail system 3, adjustment screw 13 and two displacement transducers 5 are installed on rising guide track system 4, rising guide track system 4 realizes moving up and down of displacement transducer 5, and realizes the micro-positioning regulators up and down of two displacement transducer 5 entirety with adjustment screw 13.In rising guide track system 4, displacement transducer 5 and adjustment screw 13 integral installation horizontal guide rail system 3, realize moving horizontally of displacement transducer 5.In order to improve the precision of system, rising guide track system 5 and horizontal guide rail system 3 can be converted by the micromotion platform of maturation, provide precision and the repeatable accuracy of motion.
Displacement measurement system in Fig. 3 is two covers, i.e. two horizontal guide rail systems, 3, two rising guide track systems, 4, four displacement transducers 5 and two adjustment screws 13, wherein two displacement transducers 5 are one group, be arranged on the guide rail of a rising guide track system 4, two rising guide track systems 4 installed altogether four displacement transducers 5.By adjustment adjustment screw 13, the measured value sum often organizing displacement transducer 5 in two groups of displacement transducers 5 is made to be tending towards identical.
Air bearing loading system comprises air bearings support 6, counterweight 7, air spindle 8, air bearing 9, bearing centring sleeve 11 and centering pedestal 12, centering pedestal 12 is arranged on erecting bed 2, bearing centring sleeve 11 is connected with centering pedestal 12, air spindle 8 is through air bearings support 6 and air bearing 9, and be connected with counterweight 7, air bearing 9 pairs of air spindles 8 provide radial support, motor bearing 10 to be measured is between air spindle 8 and bearing centring sleeve 11, upper end is pushed down by air spindle 8, and lower end by bearings centring sleeve 11 supports location.Be illustrated in figure 4 the present invention's motor bearing erection to be measured schematic diagram.
In order to improve displacement measurement precision, displacement measurement system can install two covers, and symmetrical installation is to eliminate the error that the running accuracy of bearing own causes.
High accuracy gyroscope motor bearing loading method of the present invention, comprises the steps:
Step (one), aviation gasoline, absolute ethyl alcohol and sherwood oil is used to clean up and trap motor bearing to be measured.
Step (two), open gyro machine loading equipemtn be correlated with source of the gas, make supply gas pressure stablize, gyro machine loading equipemtn can normally be worked;
Step (three), motor standard component to be loaded in the bearing centring sleeve 11 of gyro machine loading equipemtn, and motor standard component and bearing centring sleeve 11 entirety are loaded in centring machine seat 12; Be illustrated in figure 5 motor standard component schematic diagram of the present invention, be illustrated in figure 6 gyro machine loading equipemtn centre bearer centring sleeve schematic diagram of the present invention; Figure 7 shows that in gyro machine loading equipemtn of the present invention pedestal schematic diagram of feeling relieved.
Step (four), by air spindle 8 by motor standard component compress, and by counterweight 7 apply preload, wherein the quality of counterweight 7 equals to design the quality preloading and deduct air spindle 8; Be illustrated in figure 8 air spindle schematic diagram in gyro machine loading equipemtn of the present invention.
Step (five), by adjustment horizontal guide rail system 3 and rising guide track system 4, the gauge head of displacement transducer 5 is beaten in the suitable position of the motor standard component shaft shoulder, generally beat in the centre position of the motor bearing shaft shoulder to be measured.And the measurement displayed value of displacement transducer 5 all within range ability (range selects suitable gear as required), in measuring process, the relative position of holding position displacement sensor 5 vertical direction does not change simultaneously, obtains motor standard component shaft shoulder size h.
If displacement transducer 5 is four, then as shown in Figure 3, keep the relative position of four displacement transducer 5 vertical directions not change in measuring process, by adjustment micrometer adjusting screw 13, make the measured value sum often organizing displacement transducer 5 in two groups of displacement transducers 5 be tending towards identical.
Displacement transducer 5 is moved away by step (six), adjustment horizontal guide rail system 3, takes off motor standard component.
Step (seven), motor bearing 10 to be measured is cleaned rear trap, and motor bearing 10 to be measured is loaded in bearing centring sleeve 11, motor bearing 10 to be measured and bearing centring sleeve 11 are arranged on centring sleeve pedestal 12.
Step (eight), to be compressed by motor bearing 10 to be measured by air spindle 8, and apply to preload by counterweight 7, the quality of counterweight 7 equals to design the quality preloading and deduct air spindle 8; As shown in Figure 4.
Step (nine), by adjustment horizontal guide rail system 3 and rising guide track system 4, the gauge head of displacement transducer 5 is beaten in the suitable position of the motor bearing shaft shoulder to be measured, generally beat in the centre position of motor bearing 10 shaft shoulder to be measured.And the measurement displayed value of two displacement transducers 5 all within range ability (range selects suitable gear as required), in measuring process, the relative position of holding position displacement sensor 5 vertical direction does not change simultaneously; Obtain motor bearing 10 outer ring shaft shoulder size h ' to be measured.
Step (ten), obtain the difference DELTA h of motor bearing 10 outer ring shaft shoulder size h ' to be measured and motor standard component shaft shoulder size h;
Step (11), the height dimension H of motor outer rotor when difference DELTA h being added motor standard component shaft shoulder size h value can obtain imposed load.
Motor bearing 10 outer ring to be measured can be rotated as required and carry out multimetering, and find out motor bearing 10 outer ring shaft shoulder size h ' to be measured and the maxima and minima of the difference DELTA h of motor standard component shaft shoulder size h, get the mean value Δ h of maxima and minima
on average, by Δ h
on averagethe height dimension H of motor outer rotor when obtaining imposed load is added with standard component shaft shoulder size h value.
Measuring principle of the present invention is as follows:
Adopt the principle directly measured, locate with the bearing outer ring of gyro motor one end, the outer ring of other end bearing applies the load of load or the change fixed, by the size between the displacement measurement system measurement two cover bearing outer ring shaft shoulders or its size changing amount, then according to the height dimension of the size apolegamy gyro motor outer rotor measured, preloading after gyro motor assembling is ensured.
The present invention feels relieved with the axle of gyro motor one end, bearing outer ring is located, counterweight is placed in scale pan, on the outer ring of other end bearing, the load (namely preloading) required is applied by air bearing, then the method for variate is adopted to measure size between the two cover bearing outer ring shaft shoulders by calibrated displacement transducer 1 and displacement transducer 2, according to the height dimension of the size apolegamy gyro motor outer rotor measured, with preloading after ensureing gyro motor assembling.Adopt this loading method of testing, the size between the two cover bearing outer ring shaft shoulders can be tested out according to the bearing preload lotus designed, then according to the height dimension of this size apolegamy gyro motor outer rotor, process control is carried out to the assembling of gyro motor, improves the installation qualification rate of gyro motor.
Embodiment 1
Example is loaded as with 32TZW431D type hysteresis gyro motor bearing.32TZW431D type hysteresis gyro motor adopts end cover type C906073A2 bearing.Bearing axial rigidity is 200g-250g/ μm, and after pairing, axial rigidity is then the half of single cover bearing rigidity, is 100g-125g/ μm.The loading accuracy of bearing requires to be ± 50g.
In loading procedure, adopt air bearing as the guidance system of loading system, ensure that the right alignment of air spindle and centering pedestal is less than 0.005 μm by assembling, air pressure is not less than 4.6MPa.The GT31 type high precision inductance displacement sensor that displacement transducer adopts TESA company of Switzerland to produce.It measures repetitive error is 0.1 μm.Motor standard component two shaft shoulder depth of parallelism is better than 1 μm, and distance is all 11.150mm mutually with motor rotor ring nominal distance.Bearing centring sleeve and centering pedestal are clearance fit, tolerance clearance < 0.02mm.
By repetitive measurement, the reproducibility error of displacement transducer is 0.2 μm, and be 125g/ μm of calculating according to axial rigidity, loading accuracy is 50g.
The above; be only the embodiment of the best of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
The content be not described in detail in instructions of the present invention belongs to the known technology of professional and technical personnel in the field.
Claims (4)
1. a high accuracy gyroscope motor bearing loading method, it is characterized in that: adopt gyro machine loading equipemtn to realize loading, described gyro machine loading equipemtn comprises erecting bed (2), displacement measurement system and air bearing loading system, wherein displacement measurement system comprises horizontal guide rail system (3), rising guide track system (4), two displacement transducers (5) and adjustment screw (13), horizontal guide rail system (3) is arranged on erecting bed (2), rising guide track system (4) is arranged in horizontal guide rail system (3), adjustment screw (13) and displacement transducer (5) are installed on rising guide track system (4), rising guide track system (4) realizes moving up and down of displacement transducer (5), horizontal guide rail system (3) realizes moving horizontally of displacement transducer (5), adjustment screw (13) carries out micro-positioning regulators to displacement transducer (5), air bearing loading system comprises air bearings support (6), counterweight (7), air spindle (8), air bearing (9), bearing centring sleeve (11) and centering pedestal (12), centering pedestal (12) is arranged on erecting bed (2), bearing centring sleeve (11) is connected with centering pedestal (12), air bearings support (6) is connected with air bearing (9), air spindle (8) is through air bearings support (6) and air bearing (9), and be connected with counterweight (7), motor bearing to be measured (10) is positioned between air spindle (8) and bearing centring sleeve (11), upper end is pushed down by air spindle (8), lower end by bearings centring sleeve (11) supporting location,
Specific implementation process comprises the steps:
Step (one), first motor standard component to be loaded in the bearing centring sleeve (11) of gyro machine loading equipemtn, and motor standard component and bearing centring sleeve (11) entirety are loaded in centring machine seat (12); Compressed by motor standard component by air spindle (8), and apply to preload by counterweight (7), wherein the quality of counterweight (7) equals design and preloads the quality deducting air spindle (8);
Step (two), by adjustment horizontal guide rail system (3) and rising guide track system (4), the gauge head of two displacement transducers (5) is beaten on the motor standard component shaft shoulder, and the measurement displayed value of two displacement transducers (5) is all within range ability, keep the relative position of two displacement transducer (5) vertical directions not change in measuring process simultaneously, obtain motor standard component shaft shoulder size h, adjust horizontal guide rail system (3) afterwards displacement transducer (5) is moved away, take off motor standard component;
Step (three), by motor bearing to be measured (10) cleaning after trap, and motor bearing to be measured (10) is loaded in bearing centring sleeve (11), motor bearing to be measured (10) and bearing centring sleeve (11) are arranged in centering pedestal (12);
Step (four), by air spindle (8), motor bearing to be measured (10) to be compressed, and apply to preload by counterweight (7), the quality of counterweight (7) equals design and preloads the quality deducting air spindle (8);
Step (five), by adjustment horizontal guide rail system (3) and rising guide track system (4), the gauge head of two displacement transducers (5) is beaten on motor bearing to be measured (10) shaft shoulder, and the measurement displayed value of two displacement transducers (5) is all within range ability, in measuring process, keep the relative position of two displacement transducer (5) vertical directions not change simultaneously; Obtain motor bearing outer ring shaft shoulder size h ' to be measured;
Step (six), obtain the difference DELTA h of motor bearing outer ring shaft shoulder size h ' to be measured and motor standard component shaft shoulder size h;
Step (seven), the height dimension H of motor outer rotor when difference DELTA h being added motor standard component shaft shoulder size h value can obtain imposed load.
2. a kind of high accuracy gyroscope motor bearing loading method according to claim 1, it is characterized in that: described gyro machine loading equipemtn comprises two cover displacement measurement systems, i.e. two horizontal guide rail systems (3), two rising guide track systems (4), four displacement transducers (5) and two adjustment screw (13), wherein two displacement transducers (5) are one group, be arranged on the guide rail of a rising guide track system (4), by adjustment adjustment screw (13), the measured value sum often organizing displacement transducer (5) in two groups of displacement transducers (5) is made to be tending towards identical.
3. a kind of high accuracy gyroscope motor bearing loading method according to claim 1, is characterized in that: make the gauge head of two displacement transducers (5) beat in the centre position of the motor standard component shaft shoulder in described step (two); The gauge head of two displacement transducers (5) is made to beat in the centre position of motor bearing to be measured (10) shaft shoulder in described step (five).
4. a kind of high accuracy gyroscope motor bearing loading method according to claim 1, it is characterized in that: rotate motor bearing to be measured (10) outer ring as required after described step (six) and carry out multimetering, and find out motor bearing to be measured (10) outer ring shaft shoulder size h ' and the maxima and minima of the difference DELTA h of motor standard component shaft shoulder size h, get the mean value Δ h of described maxima and minima
on average, enter step (seven), by Δ h
on averagethe height dimension H of motor outer rotor when obtaining imposed load is added with standard component shaft shoulder size h value.
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| CN103926078A (en) * | 2014-04-29 | 2014-07-16 | 洛阳轴研科技股份有限公司 | Test equipment for detecting axial rigidity of precise miniature bearing |
| CN107222078B (en) * | 2017-07-14 | 2023-08-29 | 深圳市东方伺服数控技术有限公司 | Outer rotor permanent magnet direct-drive servo motor |
| CN109059834A (en) * | 2018-08-10 | 2018-12-21 | 苏州邦勒尔自动化科技有限公司 | A kind of motor rotor bearing prepackage detection device |
| CN109031123B (en) * | 2018-09-18 | 2020-08-28 | 江苏大学 | Automatic linear type micro-special motor performance testing system |
| CN109900408B (en) * | 2019-03-22 | 2024-06-07 | 吉林大学 | Electric servo loading device for friction material chase testing machine |
| CN110176843B (en) * | 2019-05-20 | 2023-06-20 | 中国船舶重工集团公司第七0七研究所 | Bearing pair preload applying device for gyro motor |
| CN111366068B (en) * | 2020-03-18 | 2022-04-05 | 上海航天控制技术研究所 | Method and device for measuring preload associated parameters of bearing assembly |
| CN111780657B (en) * | 2020-05-21 | 2022-01-04 | 北京航天控制仪器研究所 | Automatic measuring device and measuring method for clearance of indexable motor |
| CN112857639B (en) * | 2021-02-18 | 2022-10-11 | 哈尔滨工业大学 | Servo incremental high-precision pressure sensor and using method thereof |
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| CN101393005A (en) * | 2008-10-30 | 2009-03-25 | 洛阳轴研科技股份有限公司 | Measurement method and apparatus for bearing protrusion amount under pre-loading no more than 10N |
| CN101867261A (en) * | 2010-03-30 | 2010-10-20 | 洛阳轴研科技股份有限公司 | Method for selecting outer rotor matched with gyro motor bearings and selection device |
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