CN103148818A - High precision gyro motor bearing loading method - Google Patents
High precision gyro motor bearing loading method Download PDFInfo
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- CN103148818A CN103148818A CN2012105319546A CN201210531954A CN103148818A CN 103148818 A CN103148818 A CN 103148818A CN 2012105319546 A CN2012105319546 A CN 2012105319546A CN 201210531954 A CN201210531954 A CN 201210531954A CN 103148818 A CN103148818 A CN 103148818A
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Abstract
The invention relates to a high precision gyro motor bearing loading method. The loading can be achieved by using of a gyro motor loading device, and the gyro motor loading device consists of a machine frame, a platform surface, a horizontal guide rail system, a lifting guide rail system, two displacement sensors, an air bearing support, weights, an air shaft, a bearing centering sleeve and a bearing centering base. The centring can be achieved through a shaft at one end of the gyro motor, and the positioning can be achieved on an outer ring of a bearing, weights are placed in a weight plate, and required loads (namely, preloads) are added on an outer ring of a bearing at the other end through the air bearing. Then the size between two sets of bearing outer ring shaft shoulders is measured with a method of differential measurement through a displacement sensor 1 and a displacement sensor 2 which are calibrated. The height size of an outer rotor of the gyro motor is matched according to the measured size, and the post-installed preload of the gyro motor is guaranteed. The loading precision is greatly improved, errors caused by that the loading force does not pass through the center line of the motor bearing are eliminated, and the displacement measurement accuracy is improved.
Description
Technical field
The present invention relates to a kind of high accuracy gyroscope motor bearing loading method, the high precision that can be used for inertial attitude sensor gyro motor bearing loads, and belongs to the gyro motor technical field.
Background technology
Common gyro motor (perhaps being called gyro machine) is general main to be comprised of bearing, rotor, B-H loop parts and stator component four parts, and as shown in Figure 1,1 is bearing, and 2 is stator component, and 3 is the B-H loop parts, and 4 is rotor.
Wherein motor bearing adopts common angular contact bearing or end cover type angular contact bearing, is one of parts of most important in gyro machine and most critical, has played simultaneously the effect of rotation assurance and mounting shell.And make rotating part can reach the effect that the revolution moment of friction is as far as possible little, running accuracy is high as far as possible, mission life is long as far as possible when work.
In order to guarantee 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 that preloads is mainly to produce certain predeformation when the original installation of bearing, thereby make bearing skip in actual use the distortion at initial stage than the megastage, significantly improved the rigidity that supports, simultaneously bearing is applied suitable preloading (be called for short and load) and can improve the running accuracy of gyro motor rotor, thereby 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, guarantees that gyro motor bearing rigidity, running accuracy, frictional behaviour etc. are in Optimal State.
The present domestic accurate loading equipemtn of gyro motor that still do not have.The manufacturer of domestic a lot of gyro motors, also taked a lot of methods to solve the loading problem of gyro motor, but due to the gyro motor bearing to preload magnitude less, precision prescribed is higher, therefore effective head it off also, can only screen by testing targetedly in the gyro motor after assembling, reduced like this installation qualification rate of gyro motor, caused a lot of wastes.
The domestic method of taking mainly contains following several at present;
The method of (1) matching by measuring the bearing bulge quantity.
This method is in the assembling process of gyro motor, at first measure the bulge quantity of gyro motor bearing, then calculate according to the bulge quantity of bearing and the inner and outer rotors size of gyro motor, guarantee bearing is applied preloading of setting by repairing the outer rotor height that grinds gyro motor.Then by the gyro motor after assembling is carried out a series of performance test, the actual of bearing preloads in checking.
Adopt such gyro motor loading process, caused gyro motor bearing loading error very large, excessive when the gyro motor bearing after assembling is loaded with, sometimes too small; Preload the excessive flexibility of revolution that affects gyro motor, cause unnecessary power attenuation, preload the too small requirement that does not reach again rigidity and running accuracy. adopt the installation qualification rate of this method gyro motor very low.
(2) by measuring the method for motor end play
This method is in the assembling process of gyro motor.Load by the method for measuring motor end play, as shown in Figure 2, concrete grammar is: at first the motor of will thicker rotor ring packing into applies a downward power (equal to preload deduct motor deadweight), the displacement of recording pen motor axle to motor drive shaft; Then, motor drive shaft is applied a power that makes progress (equal to preload add motor deadweight), the displacement of recording pen motor axle.Two displacement additions obtain the primary clearance of motor, can calculate to apply according to the primary clearance of motor to preload the needed adjustment amount of motor rotor ring.
Adjust the motor preload by the method for surveying the motor gap, because dimensional measurement is to measure by clock gauge, precision is lower (such as the dimensional accuracy of clock gauge is 1 μ m, the rigidity of gyro motor bearing is 250g/ μ m, therefore this loading error that causes is exactly 250g), and the power that applies is not necessarily by the motor bearing center line, and precision is subject to the impact of motor axial friction, therefore this method is more rough, can only be used for the coarse adjustment preload.
(3) by measuring the method for low speed friction moment
This method is subjected to the impact of low speed friction moment test device precision up till now larger, and the bearing preload lotus that reflects is sometimes excessive, and is sometimes too small.And the test of low speed friction moment itself also belongs to indirectly testing, and moment of friction also is subject to the impact of the factors such as bearing internal lubrication oil content.Therefore, lower by the method precision of measuring low speed friction moment at present, and can't provide concrete bearing loading numerical value and precision.
Summary of the invention
The purpose of this method is to overcome the above-mentioned deficiency of prior art, a kind of high accuracy gyroscope motor bearing loading method is provided, and the method adopts precision weights directly to load, and loading accuracy is accurate, eliminate the error that loading force does not cause by the motor bearing center line, and improved the displacement measurement precision.
Above-mentioned purpose of the present invention mainly is achieved by following technical solution:
a kind of high accuracy gyroscope motor bearing loading method, adopt the gyro machine loading equipemtn to realize loading, described gyro motor loading equipemtn comprises erecting bed, displacement measurement system and air bearing loading system, wherein displacement measurement system comprises the horizontal guide rail system, the rising guide track system, two displacement transducers and adjust screw, the horizontal guide rail system is arranged on erecting bed, the rising guide track system is arranged in the horizontal guide rail system, adjusting screw and displacement transducer is installed on the rising guide track system, the rising guide track system is realized moving up and down of displacement transducer, the horizontal guide rail system realizes moving horizontally of displacement transducer, adjust screw displacement transducer is carried out micro-positioning regulators, the air bearing loading system comprises air bearings support, counterweight, air spindle, air bearing, bearing centring sleeve and centering pedestal, the centering pedestal is arranged on erecting bed, the bearing centring sleeve is connected with the centering pedestal, air bearings support is connected with air bearing, air spindle passes 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, the upper end is pushed down by air spindle, and the lower end is by bearing centring sleeve supporting location,
The specific implementation process comprises the steps:
Step (one), at first the motor standard component is packed in the bearing centring sleeve of gyro machine loading equipemtn, and motor standard component and bearing centring sleeve integral body are packed in the centring machine seat; By air spindle, the motor standard component is compressed, and apply by counterweight and preload, wherein the quality of counterweight equals to design and preloads the quality that deducts air spindle;
Step (two), by adjusting 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 in range ability, keep simultaneously the relative position of two displacement transducer vertical directions not change in measuring process, obtain motor standard component shaft shoulder size h, adjust afterwards the horizontal guide rail system displacement transducer is moved away, take off the motor standard component;
Step (three), motor bearing to be measured is cleaned after trap, and motor bearing to be measured is packed in the bearing centring sleeve, motor bearing to be measured and bearing centring sleeve are arranged on the centring sleeve pedestal;
Step (four), by air spindle, motor bearing to be measured is compressed, and apply by counterweight and preload, the quality of counterweight equals to design and preloads the quality that deducts air spindle;
Step (five), by adjusting 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 all in range ability, keeps the relative position of two displacement transducer vertical directions not change simultaneously in measuring process; Obtain motor bearing to be measured outer ring shaft shoulder size h ';
Step (six), obtain the difference DELTA h of motor bearing to be measured outer ring shaft shoulder size h ' and motor standard component shaft shoulder size h;
Step (seven), the height dimension H of motor outer rotor when difference DELTA h is added that motor standard component shaft shoulder size h value can obtain imposed load.
In above-mentioned high accuracy gyroscope motor bearing loading method, the gyro machine loading equipemtn comprises two cover displacement measurement systems, namely two horizontal guide rail systems, two rising guide track systems, four displacement transducers and two adjust screws, wherein two displacement transducers are one group, be arranged on the guide rail of a rising guide track system, adjust screw by adjustment, make the measured value sum of every group of displacement transducer in two groups of displacement transducers be tending towards identical.
In above-mentioned high accuracy gyroscope motor bearing loading method, make the gauge head of two displacement transducers beat centre position at the motor standard component shaft shoulder in step (2); Make the gauge head of two displacement transducers beat centre position at the motor bearing shaft shoulder to be measured in step (5).
In above-mentioned high accuracy gyroscope motor bearing loading method, step (6) is rotated as required afterwards motor bearing to be measured outer ring and is carried out multimetering, and find out maximal value and the minimum value of the difference DELTA h of motor bearing to be measured outer ring shaft shoulder size h ' and motor standard component shaft shoulder size h, get the mean value Δ h of described maximal value and minimum value
On average, enter step (7), with Δ h
On averageThe height dimension H of motor outer rotor when obtaining imposed load with the addition of 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 that motor bearing is loaded, measure respectively by the shaft shoulder size to motor standard component and motor bearing to be measured, thereby the height dimension of motor outer rotor when getting the definite imposed load of difference, improved the displacement measurement precision, eliminate the error that loading force does not cause by the motor bearing center line, further improved loading accuracy;
(2) the present invention adopts precision weights directly to load in the motor bearing loading procedure, has greatly improved loading accuracy;
(3) the present invention adopts air spindle that bearing is positioned, and has eliminated the error that loading force does not cause by the motor bearing center line;
(4) the present invention adopts general high accuracy displacement sensor to measure the distance of the bearing shaft shoulder, improved the displacement measurement precision, in measuring process by adopting two groups of displacement transducers to measure, and multimetering is carried out in the 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 improved the displacement measurement precision.
Description of drawings
Fig. 1 is the gyro motor overall construction drawing;
Fig. 2 is that in classic method, the gyro motor bearing is surveyed gap loading schematic diagram;
Fig. 3 is that the present invention adopts the 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 centering pedestal schematic diagram in gyro machine loading equipemtn of the present invention;
Fig. 8 is gyro machine loading equipemtn Air main shaft schematic diagram of the present invention;
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
Being illustrated in figure 3 as the present invention adopts the gyro machine loading equipemtn to carry out motor bearing loading schematic diagram, the present invention adopts the gyro machine loading equipemtn to realize that motor bearing loads, and the gyro machine loading equipemtn is comprised of erecting bed 2, displacement measurement system and air bearing loading system three parts.Wherein erecting bed 2 comprises frame and table top, and the mounting interface of equipment components is provided, and guarantees 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 adjusts 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, adjusting screw 13 and two displacement transducers 5 is installed on rising guide track system 4, rising guide track system 4 is realized moving up and down of displacement transducer 5, and realizes the micro-positioning regulators up and down of two displacement transducer 5 integral body with adjustment screw 13.Rising guide track system 4, displacement transducer 5 and adjust in screw 13 integral installation horizontal guide rail systems 3 are realized 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, and precision and the repeatable accuracy of motion is provided.
Displacement measurement system in Fig. 3 is two covers, namely two horizontal guide rail systems 3, two rising guide track systems 4, four displacement transducers 5 and two adjust screws 13, wherein two displacement transducers 5 are one group, be arranged on the guide rail of a rising guide track system 4, four displacement transducers 5 have been installed on two rising guide track systems 4 altogether.Adjust screw 13 by adjustment, make the measured value sum of every group of displacement transducer 5 in two groups of displacement transducers 5 be tending towards identical.
The 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 passes air bearings support 6 and air bearing 9, and be connected with counterweight 7,9 pairs of air spindles 8 of air bearing provide radial support, motor bearing 10 to be measured is between air spindle 8 and bearing centring sleeve 11, the upper end is pushed down by air spindle 8, and the lower end is located by 11 supportings of bearing centring sleeve.Be illustrated in figure 4 as the present invention's motor bearing erection to be measured schematic diagram.
In order to improve the displacement measurement precision, displacement measurement system can be installed two covers, the symmetrical error that causes to eliminate the running accuracy of bearing own of installing.
High accuracy gyroscope motor bearing loading method of the present invention comprises the steps:
Step (one), use aviation gasoline, absolute ethyl alcohol and sherwood oil to clean up and trap motor bearing to be measured.
Step (two), open the relevant source of the gas of gyro machine loading equipemtn, make supply gas pressure stable, the gyro machine loading equipemtn can be worked;
Step (three), the motor standard component is packed in the bearing centring sleeve 11 of gyro machine loading equipemtn, and motor standard component and bearing centring sleeve 11 integral body are packed in centring machine seat 12; Be illustrated in figure 5 as motor standard component schematic diagram of the present invention, be illustrated in figure 6 as gyro machine loading equipemtn centre bearer centring sleeve schematic diagram of the present invention; Figure 7 shows that centering pedestal schematic diagram in gyro machine loading equipemtn of the present invention.
Step (four), by air spindle 8, the motor standard component is compressed, and apply by counterweight 7 and preload, wherein the quality of counterweight 7 equals to design and preloads the quality that deducts air spindle 8; Be illustrated in figure 8 as gyro machine loading equipemtn Air main shaft schematic diagram of the present invention.
Step (five), by adjusting 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 the centre position at the motor bearing shaft shoulder to be measured.And the measurement displayed value of displacement transducer 5 all in range ability with interior (range is selected suitable gear as required), simultaneously in measuring process, the relative position of holding position displacement sensor 5 vertical directions does not change, and obtains motor standard component shaft shoulder size h.
If displacement transducer 5 is four, as shown in Figure 3, keep the relative position of four displacement transducer 5 vertical directions not change in measuring process, by adjusting micrometer adjusting screw 13, make the measured value sum of every group of displacement transducer 5 in two groups of displacement transducers 5 be tending towards identical.
Step (six), adjust horizontal guide rail system 3 displacement transducer 5 is moved away, take off the motor standard component.
Step (seven), motor bearing to be measured 10 is cleaned after traps, and motor bearing 10 to be measured is packed 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), by air spindle 8, motor bearing to be measured 10 is compressed, and apply by counterweight 7 and preload, the quality of counterweight 7 equals to design and preloads the quality that deducts air spindle 8; As shown in Figure 4.
Step (nine), by adjusting 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 the centre position at motor bearing 10 shaft shoulders to be measured.And the measurement displayed value of two displacement transducers 5 all in range ability with interior (range is selected suitable gear as required), simultaneously in measuring process, the relative position of holding position displacement sensor 5 vertical directions does not change; 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 is added that motor standard component shaft shoulder size h value can obtain imposed load.
Can rotate as required motor bearing to be measured 10 outer rings and carry out multimetering, and find out maximal value and the minimum value of motor bearing 10 outer ring shaft shoulder size h ' to be measured and the difference DELTA h of motor standard component shaft shoulder size h, get the mean value Δ h of maximal value and minimum value
On average, with Δ h
On averageThe height dimension H of motor outer rotor when obtaining imposed load with the addition of standard component shaft shoulder size h value.
Measuring principle of the present invention is as follows:
Adopt the principle of directly measuring, bearing outer ring location with gyro motor one end, apply fixing load or the load of variation on the outer ring of other end bearing, measure two size or its change in size amounts of overlapping between the bearing outer ring shaft shoulders by displacement measurement system, then match the height dimension of gyro motor outer rotor according to the size of measuring, preloading after the assembling of assurance gyro motor.
The present invention is with the axle centering of gyro motor one end, the bearing outer ring location, place counterweight in scale pan, apply the load (namely preloading) of requirement on the outer ring of other end bearing by air bearing, then adopt the method for variate to measure two sizes of overlapping between the 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 of measuring, with preloading after the assembling of assurance gyro motor.Adopt this loading method of testing, can test out according to the bearing preload lotus of design the size between the two cover bearing outer ring shaft shoulders, then according to the height dimension of this size apolegamy gyro motor outer rotor, process control is carried out in the assembling of gyro motor, improved the installation qualification rate of gyro motor.
Embodiment 1
Be loaded as example with 32TZW431D type hysteresis gyro motor with bearing.32TZW431D type hysteresis gyro motor adopts end cover type C906073A2 bearing.The bearing axial rigidity is 200g-250g/ μ m, and after pairing, axial rigidity is half of single cover bearing rigidity, is 100g-125g/ μ m.The loading accuracy of bearing requires.
In loading procedure, adopt air bearing as the guidance system of loading system, by assembling guarantees air spindle and the right alignment of the pedestal of feeling relieved less than 0.005 μ m, air pressure is not less than 4.6MPa.The GT31 type high precision inductance displacement transducer that displacement transducer adopts Switzerland TESA company to produce.It measures repetitive error is 0.1 μ m.Motor standard component two shaft shoulder depth of parallelisms are better than 1 μ m, 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 repeatedly measuring, the reproducibility error of displacement transducer is 0.2 μ m, is that 125g/ μ m calculates according to axial rigidity, and loading accuracy is 50g.
The above; only be the embodiment of the best of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement are within all should being encompassed in protection scope of the present invention.
The content that is not described in detail in instructions of the present invention belongs to this area professional and technical personnel's known technology.
Claims (4)
1. high accuracy gyroscope motor bearing loading method, it is characterized in that: adopt the gyro machine loading equipemtn to realize loading, described gyro motor 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), adjusting screw (13) is installed on rising guide track system (4) with displacement transducer (5), rising guide track system (4) is realized moving up and down of displacement transducer (5), horizontal guide rail system (3) realizes moving horizontally of displacement transducer (5), adjust screw (13) displacement transducer (5) is carried out micro-positioning regulators, the 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) passes 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), the upper end is pushed down by air spindle (8), the lower end is by bearing centring sleeve (11) supporting location,
The specific implementation process comprises the steps:
Step (one), at first the motor standard component is packed in the bearing centring sleeve (11) of gyro machine loading equipemtn, and motor standard component and bearing centring sleeve (11) integral body are packed in centring machine seat (12); By air spindle (8), the motor standard component is compressed, and apply by counterweight (7) and preload, wherein the quality of counterweight (7) equals to design and preloads the quality that deducts air spindle (8);
Step (two), by adjusting 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 in range ability, keep simultaneously the relative position of two displacement transducers (5) vertical direction not change in measuring process, obtain motor standard component shaft shoulder size h, adjust afterwards horizontal guide rail system (3) displacement transducer (5) is moved away, take off the motor standard component;
Step (three), motor bearing to be measured (10) is cleaned after trap, and motor bearing to be measured (10) is packed in bearing centring sleeve (11), motor bearing to be measured (10) and bearing centring sleeve (11) are arranged on centring sleeve pedestal (12);
Step (four), by air spindle (8), motor bearing to be measured (10) is compressed, and apply by counterweight (7) and preload, the quality of counterweight (7) equals to design and preloads the quality that deducts air spindle (8);
Step (five), by adjusting 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) all in range ability, keeps the relative position of two displacement transducers (5) vertical direction not change simultaneously in measuring process; Obtain motor bearing to be measured outer ring shaft shoulder size h ';
Step (six), obtain the difference DELTA h of motor bearing to be measured outer ring shaft shoulder size h ' and motor standard component shaft shoulder size h;
Step (seven), the height dimension H of motor outer rotor when difference DELTA h is added that 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 screws (13), wherein two displacement transducers (5) are one group, be arranged on the guide rail of a rising guide track system (4), adjust screw (13) by adjustment, make the measured value sum of every group of displacement transducer (5) in two groups of displacement transducers (5) 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 centre position at the motor standard component shaft shoulder in described step (2); Make the gauge head of two displacement transducers (5) beat centre position at motor bearing to be measured (10) shaft shoulder in described step (5).
4. a kind of high accuracy gyroscope motor bearing loading method according to claim 1, it is characterized in that: described step (6) is rotated as required afterwards motor bearing to be measured (10) outer ring and is carried out multimetering, and find out maximal value and the minimum value of the difference DELTA h of motor bearing to be measured (10) outer ring shaft shoulder size h ' and motor standard component shaft shoulder size h, get the mean value Δ h of described maximal value and minimum value
On average, enter step (7), with Δ h
On averageThe height dimension H of motor outer rotor when obtaining imposed load with the addition of standard component shaft shoulder size h value.
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| CN110176843A (en) * | 2019-05-20 | 2019-08-27 | 中国船舶重工集团公司第七0七研究所 | A kind of gyro machine bearing is to preloading bringing device |
| CN111366068A (en) * | 2020-03-18 | 2020-07-03 | 上海航天控制技术研究所 | Method and device for measuring preload associated parameters of bearing assembly |
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