CN106353084A - Joint precision shafting rigidity and friction torque performance degradation test device - Google Patents
Joint precision shafting rigidity and friction torque performance degradation test device Download PDFInfo
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- CN106353084A CN106353084A CN201610891349.8A CN201610891349A CN106353084A CN 106353084 A CN106353084 A CN 106353084A CN 201610891349 A CN201610891349 A CN 201610891349A CN 106353084 A CN106353084 A CN 106353084A
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a joint precision shafting rigidity and friction torque performance degradation test device. A shafting rigidity performance degradation test device comprises a driving and transmission device, a turntable shafting, a measured shafting, a measured shafting fixing and loading device, a micro displacement measuring device and a rack. A shafting friction torque performance degradation test device comprises a driving and transmission device, a turntable shafting, a measured shafting, a friction torque measuring device and a rack. The joint precision shafting rigidity and friction torque performance degradation test device provided by the invention can be used for measuring shafting static rigidity, the variation law of the stiffness and the variation law of the shafting stiffness caused by the increase of wear as the service time is prolonged, and measuring the variation law of shafting friction torque, thereby solving the problem that the test on a special precision shafting failure mode cannot be explored in the space. Through the miniaturized design, the measured shafting can be replaced, the device can be partially modified, and the local or overall environmental temperature change treatment can be carried out. The effect on a spatial precision bearing and a failure mechanism thereof can be studied by using the joint precision shafting rigidity and friction torque performance degradation test device provided by the invention in the ground test simulation environment.
Description
Technical field
The present invention relates to a kind of axis rigidity under high/low temperature and alternating temperature-changing environment and the examination of moment of friction performance degradation
Experiment device is and in particular to a kind of joint precision bearing system rigidity and moment of friction performance degradation assay device.
Background technology
Progressively deeply, space technology development is swift and violent for space exploration, development and utilization.The function of space flight special equipment is gradually many
Sample and Focus, structure also day by day complicates.Due to the difficulty of the severity of spatial environmentss, harshness and in-orbit maintenance,
Require space flight special activities has high accuracy and high reliability；Space special equipment joint precision bearing system works in spatial loop
Border, various failure factors, including high/low temperature, alternating temperature-changing, service load, the assembling magnitude of interference, initial pretightning force and military service time delay
Its reliability, and then the function of impact mechanism and precision reliability will be affected Deng all, decide arduous and complicated space mission
Success or failure.
Under space temperature effect, due to the diversity of the parts coefficient of expansion of composition mechanism, its heat effect is led to lack
Weary concordance, matching surface extruding is coordinated or produces gap to separate, thus leading to pretightning force excessive or not enough, causes space bearing
Vibration or stuck during operating.Under the coupling of initial pretension and service load, axis rigidity changes and may cause
Shafting precision lost efficacy.With the prolongation of in-orbit active time, bearing solid lubricant film abrasion in space gradually aggravates, and leads to workplace
Gap increases and causes precision inefficacy.In special working environment, the failure mode of space precise shafting and failure mechanism and ground
Shafting in environment has very big difference.Carry out test in space on a large scale at present and probe into space precise shafting failure mode not now
Real, it is badly in need of first passing through the impact to space precise bearing of theory analysis and test simulation environment on ground and failure mechanism is ground
Study carefully.
Content of the invention
It is contemplated that passing through Miniaturization Design, providing that a kind of shafting is replaceable, can locally reequip, can partly or wholly enter
Row environment temperature change processes, in ground simulation environment, joint precision bearing system rigidity and moment of friction performance degradation can be studied
Assay device.
The object of the invention is realized by following technical proposals:
A kind of joint precision bearing system rigidity property degradation experiment device, it includes driving and actuating device, turntable shafting, quilt
Survey shafting, tested shafting fixes charger, micro-displacement measuring device, frame, described driving and actuating device include stepping electricity
Machine, shaft coupling, turntable hollow axle, motor rack, described motor is connected with turntable hollow axle by shaft coupling, and passes through motor
Frame is connected with described frame；Described turntable shafting include turntable shafting locking nut, turntable hollow axle, support base, spring bearing,
End cover, fixed plate, connecting seat, described support base is coordinated with spring bearing outer ring, and support base upper end is affixed with end cover,
Support base lower end is connected with described frame, and described spring bearing inner ring is coordinated with turntable shafting locking nut and turntable hollow axle,
Described fixed plate and connecting seat are connected and fixed on turntable hollow axle；Described measured axis is fastened end and is connected with loading helmet, under
End is connected by screw on connecting seat, and tested shaft system bearing rotates together with turntable hollow axle；Described tested shafting is fixed
Charger includes holding screw, loads helmet, load force transducer, guiding cap, fairlead, load nut, loading bolt, add
Carry upper plate, upper supporting column, upper plate, described loading helmet is fixed on measured axis by holding screw and fastens end, described guiding cap insertion
Fairlead, described loading force transducer is threadeded with guiding cap, loading helmet, and described loading bolt screws in and loads nut, plus
Carry stud base to be resisted against on guiding cap, described loading nut and fairlead are fixedly connected on loading upper plate, in described loading
Plate is connected with upper plate by upper supporting column, and described upper plate is connected with described frame；Described tested shafting fixes charger to tested
Shafting applies axial load, by changing loading bolt in the size loading the change imposed load of the screw-in amount in nut, passes through
Axial load is delivered on tested the main axis of shafting for fairlead, guiding cap, loading force transducer, loading helmet and holding screw,
Load the size that force transducer obtains applied axial load by described；Described micro-displacement measuring device includes current vortex sensing
Device probe and signal transmission unit, described current vortex sensor probe and signal transmission unit are fixed on by device fixed mount and turn
On platform hollow axle, the tested the main axis of shafting that described micro-displacement measuring device is used for measuring under axial load is micro- with respect to bearing block
Thin tail sheep amount, small displacement signal is recorded by current vortex sensor probe, and is wirelessly transferred by signal transmission unit
Mode is sent to external receiver.
Described fairlead and guiding cap be connected by u-shaped slot form, the two can produce and move to axial but can not produce
Raw circumferentially opposed rotation.
Described signal transmission unit includes power supply, the current vortex sensing being arranged on described device fixed mount by annular spread
Device fore-lying device, Voltage stabilizing module, ad transducer, wireless transport module, described device fixed mount is fixed on described turntable hollow axle.
Described measured axis ties up in installation dimension tolerance band and can achieve replacement, completes the measurement of different tested shaftings.
Rotation stop bearing pin is installed between described upper plate and connecting seat and forbids relatively rotating between turntable hollow axle and frame,
The measurement of static axis rigidity is completed in the state of tested the main axis of shafting and bearing block do not relatively rotate.
A kind of joint precision bearing system moment of friction performance degradation assay device, it includes driving and actuating device, turntable axle
System, tested shafting, measurement of friction torque device, frame, described driving and actuating device include motor, shaft coupling, turntable
Hollow axle, motor rack, described motor is connected with turntable hollow axle by shaft coupling, and solid with described frame by motor rack
Even；Described turntable shafting includes turntable shafting locking nut, turntable hollow axle, support base, spring bearing, end cover, fixation
Plate, connecting seat, described support base and spring bearing outer ring coordinate, and support base upper end is affixed with end cover, support base lower end and
Described frame is connected, described spring bearing inner ring and turntable shafting locking nut and the cooperation of turntable hollow axle, described fixed plate with
Connecting seat is connected and fixed on turntable hollow axle；Described measured axis is fastened end and is connected with loading helmet, and lower end is by screw even
It is connected on connecting seat, the bearing block of tested shafting rotates together with turntable hollow axle；Described friction torque test device is tested
Moment of friction data obtained by dynamometry mode, obtain the force value of moment of friction by way of bias force, it includes tightening
Screw, loading helmet, upper plate, connecting line, measurement force transducer, sensor fixation plate, sensor stand, described loading helmet leads to
Cross holding screw to be connected with tested the main axis of shafting, described measurement force transducer connects holding screw end by connecting line, described
Measurement force transducer is fixed on upper plate by sensor fixation plate, sensor stand, and described upper plate is connected with frame.
The installation of described tested shafting adopts cantilever design, and cantilever design is suitable by applying to the spring bearing of mounted in pairs
When pretightning force obtain enough rigidity.
Described sensor stand is connected with upper plate by bolt, and sensor stand can move relative level；Described sensor
Fixed plate is connected with sensor stand by bolt, and sensor fixation plate can move opposed vertical, by adjustment horizontally and vertically
The mobile measurement force transducer realizing being arranged on sensor fixation plate is aligned with holding screw end, reduces measurement error.
Described measured axis ties up in installation and adjustment size tolerance band and can achieve replacement, completes the survey of different tested shaftings
Amount.
The invention has the beneficial effects as follows: the axis rigidity under alternating temperature-changing and moment of friction performance degradation assay device exist
Under detected space precision bearing system axial load and the effect of bearing initial pretightning force, bear high/low temperature and alternating temperature-changing, time delay abrasion
Under effect, the stiffness variation curve of measurement shafting, study axis rigidity performance degradation rule.During no-load effect, shafting is born
High/low temperature and alternating temperature-changing, time delay abrasive action, the moment of friction change curve of measurement shafting, study shafting moment of friction performance
Deterioration law.
The present invention can need to carry out personalized assembling according to experimental design.Tested shafting can be arranged on connecting seat simultaneously
And size range allows to be arranged between loading helmet and connecting seat, all can achieve and replace, complete different tested axis rigidities
Measurement；Tested shafting can be arranged on connecting seat and size range allows to pass through sensor fixation plate and sensor stand
Adjustment realize measurement force transducer and be aligned with holding screw end, all achievable replacement, complete different tested shafting frictional force
The measurement of square.
Assay device of the present invention be applied to simulation extreme under the conditions of special equipment joint precision bearing system with active time
Extend the experimentation of stiffness characteristics and friction torque characteristics deterioration law, data will be ground to special equipment movable joint
Send out design and apply, establish necessary theoretical validation and Technical Reference；On-line Control for space flight mechanism and accuracy compensation provide
Necessary guidance and support.
Brief description
Fig. 1 is the joint precision bearing system rigidity property degradation experiment equipments overall structure schematic diagram of the present invention.
Fig. 2 is the turntable shafting electrical part scheme of installation of joint precision bearing system rigidity property degradation experiment device.
Fig. 3 is the rotation stop bearing pin scheme of installation of joint precision bearing system rigidity property degradation experiment device.
Fig. 4 is the joint precision bearing system moment of friction performance degradation assay device structural representation of the present invention.
In figure: 1- motor, 2- shaft coupling, 3- turntable shafting locking nut, 4- turntable hollow axle, 5- support base, 6-
Spring bearing, 7- end cover, 8- shell, 9- fixed plate, 10- connecting seat, the tested shafting of 11-, 12- current vortex sensor are visited
Head, 13- holding screw, 14- load helmet, 15- loads force transducer, 16- guiding cap, 17- fairlead, 18- load nut,
Prop up on 19- loading bolt, 20- hexagon thin nut, 21- loading upper plate, 22- hex nut, 23- hex bolts, 24- packing ring, 25-
Post, 26- holding screw, 27- hexagon thin nut, 28- upper plate, 29- lower supporting rod, 30- hex nut, 31- hex bolts, 32- pad
Circle, 33- hex nut, 34- hex bolts, 35- lower plate, 36- soket head cap screw, 37- packing ring, 38- motor rack, 39- base,
40- current vortex sensor fore-lying device, 41- device fixed mount, 42-ad transducer, 43- wireless transport module, 44- Voltage stabilizing module,
45- power supply, 46- rotation stop bearing pin, 47- connecting line, 48- measurement force transducer, 49- sensor fixation plate, 50- sensor stand.
Specific embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment 1:
As shown in figure 1, the joint precision bearing system rigidity property degradation experiment device of the embodiment of the present invention 1, its by driving and
Actuating device, turntable shafting, tested shafting, tested shafting fix the composition such as charger, micro-displacement measuring device, frame.Its
In, drive and actuating device includes motor 1, shaft coupling 2, turntable hollow axle 4, motor rack 38；Turntable shafting includes turntable
Shafting locking nut 3, turntable hollow axle 4, support base 5, spring bearing 6, end cover 7, fixed plate 9, connecting seat 10；Measured axis
The fixing charger of system includes holding screw 13, loads helmet 14, load force transducer 15, guiding cap 16, fairlead 17, load
Nut 18, loading bolt 19, loading upper plate 21, upper supporting column 25, upper plate 28；Micro-displacement measuring device includes current vortex sensor and visits
12 and by device fixed mount 41, power supply 45, current vortex sensor fore-lying device 40, Voltage stabilizing module 44, ad transducer 42, wireless pass
The signal transmission unit of defeated module 43 grade composition；Frame includes shell 8, lower supporting rod 28, lower plate 35, base 39, and above-mentioned part leads to
Cross threaded integral.Motor 1 is fixed on motor rack 38, drives turntable hollow axle 4 to rotate by shaft coupling 2.Turn
Platform hollow axle 4 rotary motion under the support of support base 5 and spring bearing 6, support base 5 passes through hexagon socket head cap screw 36 and pad 37
It is fixedly connected with lower plate 35.End cover 7 prevents big by hex bolts 33 and hex nut 34 to supporting shafting to seal
Type particulate matter falls into shafting and causes fault.Turntable hollow axle 4 passes through hex nut 30, pad 31, hex bolts 32 and fixed plate 9
It is fixedly connected with connecting seat 10, described tested shafting 11 upper end is connected with loading helmet 14, it is fixing that holding screw 26 is passed through in lower end
It is connected on connecting seat 10, tested shafting 11 bearing block rotates together with turntable hollow axle 4；The tested shafting of the present invention 11 can use not
Replace with tested shafting, as long as tested shafting can be arranged on connecting seat 10 and size range allows to be arranged on loading helmet
Between 14 and connecting seat 10, all can achieve and replace, complete the measurement of different tested shaftings.Load dress by tested shafting is fixing
Put and axial load is applied to tested shafting, loading the change imposed load of the screw-in amount in nut 18 by changing loading bolt 19
Size, by fairlead 17, guiding cap 16, load sensor 15, load helmet 14 and holding screw 13 axial load passed
It is delivered on the main shaft of tested shafting.Load nut 18 and fairlead 17 passes through hex nut 22, hex bolts 23 and pad 24 admittedly
Surely it is connected on upper plate 28.Obtain the size of applied axial load by loading force transducer 15.Fairlead 17 and guiding cap
16 be connected by u-shaped slot form, the two can produce and move to axial but circumferentially opposed rotation can not occur.Measurement axially carries
Tested the main axis of shafting under lotus obtains with respect to the micro-displacement measuring device that is displaced through of bearing block.In power supply 45 and Voltage stabilizing module
Under 44 condition of power supply, by the current vortex sensor probe 12 acquisition change in displacement data being arranged in fixed plate 9, by electric whirlpool
Flow sensor fore-lying device 40, ad transducer 42, micrometric displacement data transfer is out supplied Treatment Analysis by wireless transport module 43.Above-mentioned
Electrical part is arranged on device fixed mount 41 by screw, as shown in Fig. 2 device fixed mount 41 is fixed by screws in turntable sky
On heart axle 4, power supply 45, current vortex sensor fore-lying device 40, Voltage stabilizing module 44, ad transducer 42, wireless transport module 43 press ring
Shape distributing installation is on device fixed mount 41.The present invention can also carry out the measurement of static axis rigidity, as shown in figure 3, passing through
Rotation stop bearing pin 46 is installed between upper plate 28 and connecting seat 10 and forbids relatively rotating between turntable and support, in measured axis owner
Axle and bearing block complete the measurement of static axis rigidity in the state of not relatively rotating.Carry out the prolongation with active time
During the Changing Pattern experimentation of axis rigidity that abrasion aggravation leads to, under room temperature environment, loading bolt is adjusted by spanner
The 19 screw-in amounts in loading nut 18 change the size of imposed load, by current vortex sensor probe 12 acquisition change in displacement
Data, thus obtain the load-displacement curves of shafting.Time of measuring controls within a few minutes or more than ten minutes, with a few houres
Or ten a few houres be a measure the cycle, the Changing Pattern of Time delay measurement shafting load-displacement curves, obtain with active time
Extend the Changing Pattern of axis rigidity that abrasion aggravation leads to.
Embodiment 2:
A kind of joint precision bearing system moment of friction performance degradation assay device of the embodiment of the present invention 2, as shown in figure 4, its
Formed with actuating device, turntable shafting, tested shafting, measurement of friction torque device, frame etc. by driving.Wherein drive and be driven
The mode that device, turntable shafting, the structure of frame and turntable obtain rotary power tests dress with above-mentioned axis rigidity performance degradation
Put embodiment, repeat no more here.The installation of tested shafting 11 adopts cantilever design, and cantilever design is by mounted in pairs
Spring bearing 6 applies suitable pretightning force and obtains enough rigidity.Friction torque test device includes holding screw 13, loads shield
Cap 14, upper plate 28, connecting line 47, measurement force transducer 48, sensor fixation plate 49, sensor stand 50；Moment of friction data
Obtained by dynamometry mode, load helmet 14 and be fixedly connected with tested the main axis of shafting by holding screw 13, by connecting line 37
Connect holding screw 16 end and measurement force transducer 48, obtain the force value of moment of friction by way of bias force.Sensor
Support 50 is connected with upper plate 28 by bolt, and can move relative level；Sensor fixation plate 49 is propped up with sensor by bolt
Frame 50 connects, and can move opposed vertical.Horizontally and vertically move realization by adjustment to be arranged on sensor fixation plate 49
Measurement force transducer 48 is aligned with holding screw 13 end, reduces measurement error.
Tested shafting 11 can be arranged on connecting seat and size range allows by sensor fixation plate 49 and sensing
The adjustment of device support 50 is realized measurement force transducer 48 and is aligned with holding screw 13 end, all can achieve and replaces, completes different quilts
Survey the measurement of shafting moment of friction.
Under being not loaded with operating mode, this device is integrally placed in temperature control box, motor 1 rotates, changes the indoor temperature of temperature control
Analog temperature alternation, it is possible to obtain the Changing Pattern of moment of friction, indirect verification shafting under alternating temperature-changing and military service time-lag action
The phenomenon that pretension is stuck or pretension is not enough occurs under temperature changing environment.
Claims (9)
1. a kind of joint precision bearing system rigidity property degradation experiment device is it is characterised in that it includes driving and actuating device, turns
Platform shafting, tested shafting, tested shafting fix charger, micro-displacement measuring device, frame, described driving and actuating device bag
Include motor (1), shaft coupling (2), turntable hollow axle (4), motor rack (38), described motor (1) passes through shaft coupling (2)
It is connected with turntable hollow axle (4), and be connected with described frame by motor rack (38)；Described turntable shafting includes turntable shafting lock
Jack panel (3), turntable hollow axle (4), support base (5), spring bearing (6), end cover (7), fixed plate (9), connecting seat
(10), described support base (5) and spring bearing (6) outer ring coordinate, and support base (5) upper end is affixed with end cover (7), support base
(5) lower end is connected with described frame, described spring bearing (6) inner ring and turntable shafting locking nut (3) and turntable hollow axle (4)
Cooperation, described fixed plate (9) and connecting seat (10) are connected and fixed on turntable hollow axle (4)；On described tested shafting (11)
End is connected with loading helmet (14), and lower end is connected by screw on connecting seat (10), tested shafting (11) bearing block and turntable
Hollow axle (4) rotates together；Described tested shafting is fixed charger and is included holding screw (13), load helmet (14), load
Force transducer (15), guiding cap (16), fairlead (17), load nut (18), loading bolt (19), load upper plate (21), on
Pillar (25), upper plate (28), described loading helmet (14) is fixed on tested shafting (11) upper end by holding screw (13), described
Guiding cap (16) insertion fairlead (17), described loading force transducer (15) is with guiding cap (16), loading helmet (14) screw thread even
Connect, described loading bolt (19) screws in and loads nut (18), and loading bolt (19) bottom is resisted against on guiding cap (16), described plus
Carry nut (18) and fairlead (17) is fixedly connected in loading upper plate (21), described loading upper plate (21) passes through upper supporting column (25)
It is connected with upper plate (28), described upper plate (28) is connected with described frame；Described tested shafting fixes charger to tested shafting
Apply axial load, by changing loading bolt (19) in the size loading the change imposed load of the screw-in amount in nut (18),
By fairlead (17), guiding cap (16), load force transducer (15), load helmet (14) and holding screw (13) by axial load
Lotus is delivered on tested the main axis of shafting, loads, by described, the size that force transducer (15) obtains applied axial load；Described
Micro-displacement measuring device includes current vortex sensor probe (12) and signal transmission unit, and described current vortex sensor pops one's head in (12)
It is fixed on turntable hollow axle (4) by device fixed mount (41) with signal transmission unit, described micro-displacement measuring device is used for
Tested the main axis of shafting under measurement axial load passes through current vortex with respect to the small displacement of bearing block, small displacement signal
Sensor probe (12) records, and is sent to external receiver by signal transmission unit with wireless transmission method.
2. joint according to claim 1 precision bearing system rigidity property degradation experiment device is it is characterised in that described guiding
Set (17) and guiding cap (16) be connected by u-shaped slot form, the two can produce and move to axial but can not produce circumferential phase
To rotation.
3. joint according to claim 1 precision bearing system rigidity property degradation experiment device is it is characterised in that described signal
Transmission unit includes power supply (45), the current vortex sensor fore-lying device being arranged on described device fixed mount (41) by annular spread
(40), Voltage stabilizing module (44), ad transducer (42), wireless transport module (43), described device fixed mount (41) is fixed on described
On turntable hollow axle (4).
4. joint according to claim 1 precision bearing system rigidity property degradation experiment device is it is characterised in that described tested
Shafting (11) can achieve in installation dimension tolerance band and replaces, and completes the measurement of different tested shaftings.
5. joint according to claim 1 precision bearing system rigidity property degradation experiment device is it is characterised in that on described
Rotation stop bearing pin (46) is installed between plate (28) and connecting seat (10) and forbids turntable hollow axle (4) relatively rotating and frame between,
The measurement of static axis rigidity is completed in the state of tested the main axis of shafting and bearing block do not relatively rotate.
6. a kind of joint precision bearing system moment of friction performance degradation assay device is it is characterised in that it includes driving and is driven dress
Put, turntable shafting, tested shafting (11), measurement of friction torque device, frame, described driving and actuating device include motor
(1), shaft coupling (2), turntable hollow axle (4), motor rack (38), it is hollow with turntable that described motor (1) passes through shaft coupling (2)
Axle (4) is connected, and is connected with described frame by motor rack (38)；Described turntable shafting include turntable shafting locking nut (3),
Turntable hollow axle (4), support base (5), spring bearing (6), end cover (7), fixed plate (9), connecting seat (10), described support
Seat (5) and spring bearing (6) outer ring coordinate, and support base (5) upper end is affixed with end cover (7), support base (5) lower end with described
Frame is connected, and described spring bearing (6) inner ring is coordinated with turntable shafting locking nut (3) and turntable hollow axle (4), described fixation
Plate (9) and connecting seat (10) are connected and fixed on turntable hollow axle (4)；Described tested shafting (11) upper end and loading helmet
(14) connect, lower end is connected by screw on connecting seat (10), and the bearing block of tested shafting revolves together with turntable hollow axle (4)
Turn；The moment of friction data that described friction torque test device is tested is obtained by dynamometry mode, by way of bias force
Obtain the force value of moment of friction, it includes holding screw (13), loads helmet (14), upper plate (28), connecting line (47), measurement power
Sensor (48), sensor fixation plate (49), sensor stand (50), described loading helmet (14) pass through holding screw (13) with
Tested shafting (11) main shaft is connected, and described measurement force transducer (48) connects holding screw (13) end by connecting line (47),
Described measurement force transducer (48) passes through sensor fixation plate (49), sensor stand (50) is fixed on upper plate (28), described
Upper plate (28) is connected with frame.
7. joint according to claim 6 precision bearing system moment of friction performance degradation assay device is it is characterised in that tested
The installation of shafting (11) adopts cantilever design, and cantilever design is by the suitable pretension of spring bearing (6) applying to mounted in pairs
Power obtains enough rigidity.
8. joint according to claim 6 precision bearing system moment of friction performance degradation assay device is it is characterised in that described
Sensor stand (50) is connected with upper plate (28) by bolt, and sensor stand (50) can move relative level；Described sensor
Fixed plate (49) is connected with sensor stand (50) by bolt, and sensor fixation plate (49) can move opposed vertical, by adjusting
Whole horizontally and vertically move the measurement force transducer (48) that realization is arranged on sensor fixation plate (49) and holding screw (13)
End is aligned, and reduces measurement error.
9. joint according to claim 6 precision bearing system moment of friction performance degradation assay device is it is characterised in that described
Tested shafting (11) can achieve in installation and adjustment size tolerance band and replaces, and completes the measurement of different tested shaftings.
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| CN201610891349.8A CN106353084B (en) | 2016-10-12 | 2016-10-12 | Joint precision bearing system rigidity and moment of friction performance degradation experimental rig |
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| CN201610891349.8A CN106353084B (en) | 2016-10-12 | 2016-10-12 | Joint precision bearing system rigidity and moment of friction performance degradation experimental rig |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106768748A (en) * | 2017-02-07 | 2017-05-31 | 河北工业大学 | A kind of built-in machine tool chief axis axial direction device for testing dynamic stiffness and method of testing |
| CN109975003A (en) * | 2019-04-30 | 2019-07-05 | 合肥工业大学 | A kind of ground simulation experiment method and device of Satellite Tracking turntable |
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