CN107300469B - Tapered roller bearing dynamic friction torque feature measurement machine - Google Patents
Tapered roller bearing dynamic friction torque feature measurement machine Download PDFInfo
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- CN107300469B CN107300469B CN201710646074.6A CN201710646074A CN107300469B CN 107300469 B CN107300469 B CN 107300469B CN 201710646074 A CN201710646074 A CN 201710646074A CN 107300469 B CN107300469 B CN 107300469B
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- loading
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0061—Force sensors associated with industrial machines or actuators
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention relates to a kind of tapered roller bearing dynamic friction torque feature measurement machines, including rack, axial loading device and rotary main shaft device, coaxial and relatively turnable connection is constituted through tapered roller bearing to be measured between the loading axis loading end of axial loading device and the live spindle driving end of rotary main shaft device, live spindle is equipped with non-contact flange torque sensor, rotor axial one end of non-contact flange torque sensor is fixedly and coaxially connected with live spindle and rotates synchronously with live spindle, the rotor axial other end of non-contact flange torque sensor is fixedly and coaxially connected bearing mounting base to be measured, the stator of non-contact flange torque sensor is matched with the side of rotor accordingly.Above scheme, in the shafting of tapered roller bearing and torque sensor to be measured composition, only one rotary part improves the accuracy of testing result to avoid generating corresponding additional moment；In addition the moment of friction detection in the case of the axial load of consecutive variations can be achieved.
Description
Technical field
The present invention relates to Bearing testing equipment, are specifically the measurements for detecting the moment of friction of tapered roller bearing
Equipment.
Background technique
Tapered roller bearing belongs to divergence type bearing, and the inside and outside circle of bearing all has tapered raceway.Tapered roller bearing rubs
Wipe the moment of friction (dynamic friction torque) for needing to overcome when the Internal and external cycle that torque includes bearing relatively rotates and bearing internal external circle
The maximum friction torque (starting moment of friction) overcome needed for the static moment relatively rotated to.With the hair of technology
Exhibition, the requirement to tapered roller bearing is higher and higher, and the moment of friction of tapered roller bearing affects the noise of equipment, energy damage
Mistake, working life etc..
Currently, the moment of friction assay device structures design for tapered roller bearing is unreasonable, lead to testing result not
Accurately.
Summary of the invention
Objects of the present invention: to overcome defect of the existing technology, the present invention provides a kind of reasonable in design, inspection
Survey accurately and reliably tapered roller bearing dynamic friction torque feature measurement machine.
To achieve the above object, the present invention provides the following technical scheme that
A kind of tapered roller bearing dynamic friction torque feature measurement machine, including rack, it is axially loaded in rack
Device and rotary main shaft device, axial loading device include loading axis and loading mechanism, and rotary main shaft device includes rotation master
The driving end of axis, main shaft supporting mechanism and driving motor, live spindle is to be measured equipped with cooperating with tapered roller bearing to be measured
Bearing mounting base is constituted between the loading end of loading axis and the driving end of live spindle through tapered roller bearing to be measured coaxial and can
The connection of relative rotation, it is characterised in that: the live spindle is equipped with non-contact flange torque sensor, eyes with non-contact method
Rotor axial one end of blue formula torque sensor is fixedly and coaxially connected with live spindle and rotates synchronously with live spindle, non-contact
The rotor axial other end of flange type torque sensor is fixedly and coaxially connected the bearing mounting base to be measured, and non-contact flange is turned round
The stator of square sensor is matched with the side of rotor accordingly.
By using above-mentioned technical proposal, cooperated using non-contact flange torque sensor and live spindle, it is non-contact
Rotor one end of flange type torque sensor connects synchronous rotation, the bearing assembly companion to be measured of other end connection with live spindle
The rotor of non-contact flange torque sensor rotates together；The shafting of tapered roller bearing and torque sensor composition to be measured
In, only one rotary part improves the accuracy of testing result to avoid generating corresponding additional moment；It in addition can be real
Moment of friction detection under existing axially different load condition can also be achieved circular cone rolling to be measured accordingly when cancelling axial load
The measurement of sub- bearing staring torque.
Preferably, the main shaft supporting mechanism includes live spindle seat, the first bearing support and the second bearing assembly, rotation
Turn to input the first bearing support of one end close to power on main shaft and be supported on live spindle seat, the second bearing assembly includes being used for
The second supporting member of live spindle is supported, which is located at turn of the first bearing support and non-contact flange torque sensor
Between son, supporting member is located at one end that the close rotor with non-contact flange torque sensor of live spindle is connect, and described
Cooperate between two supporting members and live spindle at the disengaging type that can support, be detached from, the second supporting member be combined with its bearing of driving and
It is detached from the clutch operating mechanism of live spindle.Under structure design, live spindle is carried out when required by the second supporting member
Bearing needs to start live spindle before moment of friction detection, and the second supporting member supports live spindle steady to guarantee
Fixed starting and work withdraws the second supporting member later, and live spindle guarantees that live spindle slow-roll stabilization is reliable.
Preferably, second supporting member is axially moveable the second bearing support being set on live spindle seat, the
The inner ring hole of two bearing supports is big end down taper type hole, and live spindle is compatible with taper type hole along being axially arranged with
Conical bearing portion, the second bearing support is driven to move axially for clutch operating mechanism so that the bearing of taper type hole and disengaging live spindle
Conical bearing portion on.Under structure design, the second supporting member is design bearing, and with taper fit, has structure simple, match
Close reliable and stable advantage.
Preferably, the live spindle seat is equipped with release bearing seat ring, and the outer ring of the second bearing support is fixedly mounted on
On release bearing seat ring, the axial sliding fit of release bearing seat ring is on live spindle seat, release bearing seat ring axially corresponding the
One end of the taper type hole small end of two bearing supports is equipped with the taper type hole bearing engagement of the second bearing support of driving in taper branch
Reset spring in bearing portion, driving end taper type corresponding with the inner ring of the second bearing support hole big end of the clutch operating mechanism
One end pushing tow cooperation.Under structure design, release bearing seat ring forms the second bearing support and installs, the second bearing support peace
Dress is reliable and motion stability is reliable, and the second bearing support is formed by spring to be resetted and support to live spindle, guarantees
Bearing is reliable；In addition, clutch operating mechanism, which carries out pushing tow to the inner ring of release bearing seat ring, reaches disengaging, has and is detached from reliably,
At the outer ring of the second bearing support of reset spring pushing tow, there is reasonable structural arrangement.
Preferably, the power output end of the loading mechanism connect and acts synergistically with the operating side of clutch operating mechanism,
The synergistic effect is when loading mechanism drive load axis applies rated load and the above load capacity to tapered roller bearing to be measured
The second bearing support is driven to be detached from live spindle through clutch operating mechanism.Under structure design, using same power output, structure
It is compact, and reach reliable synergistic effect, reliable operation.
Preferably, the clutch operating mechanism includes that bearing separation drives slide, bearing separation driving lever and pushing tow sliding sleeve,
Pushing tow sliding sleeve, which slides up and down, to be matched on live spindle seat, the inner ring lower axial end portion pushing tow of pushing tow sliding sleeve and the second bearing support
Cooperation, pushing tow sliding sleeve are combined with the disengaging yoke of driving pushing tow sliding sleeve axial movement, and disengaging yoke turns at what can vertically be swung
Dynamic to be arranged on the rack, disengaging yoke includes shift fork arm and actuating arm, and shift fork arm and actuating arm are divided into disengaging yoke rotation
Fulcrum two sides, shift fork arm and the pushing tow sliding sleeve of disengaging yoke are connected, and the actuating arm of disengaging yoke is equipped with linkage slot, linkage
Slot includes extending along the upper groove body and lower groove that direction is sequentially distributed, and upper groove body and lower groove vertically misplace arrangement and transition
Connection, bearing separation driving lever vertically extend arrangement and are installed in rack, and bearing separation driving lever lower end is equipped with sliding and leads
To the lower linkage head being matched in linkage slot, bearing separates driving lever and is connected through the actuating arm of lower linkage head and disengaging yoke,
Bearing separation driving slide drives lifting activity through loading mechanism, and bearing separation driving slide is equipped with the driving lever extended up and down and drives
Dynamic guide groove, driving lever driving guide groove includes along the first slot and the second slot being sequentially arranged up and down, the first slot and the second slot along corresponding
Bearing separates driving lever swaying direction in arrangement and the transition connection of misplacing, and bearing separation driving lever upper end is matched with equipped with sliding guiding and dials
Bar drives the upper linkage head in guide groove, and bearing separation driving lever separates driving slide with bearing through upper linkage head and is connected.It is above-mentioned
Under technical solution, clutch operating mechanism working principle is that when drive load axis loads, loading mechanism drives loading mechanism simultaneously
The upper linkage head of bearing separation driving slide lifting activity, bearing separation driving lever is oppositely oriented sliding in driving lever driving guide groove,
Driving lever driving guide groove includes corresponding shaft bearing separation driving lever swaying direction dislocation arrangement in the first slot and the second slot, in this way in bearing
The upper linkage head for separating driving lever realizes that driving bearing separation driving lever is swung when the first slot and the second slot switch, and bearing separates driving lever
Under wobbling action, lower linkage head linkage slot in be oriented to sliding, lower linkage head in upper groove body and lower groove handoff procedure, due to
Upper groove body with lower groove arrange up and down and transition connects by dislocation, and under lower linkage head effect, bearing separates the wobble drive point of driving lever
It is swung from shift fork, and then disengaging yoke stirs pushing tow sliding sleeve lifting carriage, to be carried out through pushing tow sliding sleeve to the second bearing support
It axial pushing tow and is resetted under the spring force of reset spring；With compact-sized, the advantages of being easily installed debugging and reliable operation.
Preferably, the loading mechanism includes loading motor, load lead screw pair and load sliding block, and load lead screw pair includes
The motor shaft of mutually matched load lead screw and load nut, the loading motor is connect with load lead screw transmission, loads nut
It is fixedly installed on load sliding block, load sliding block positioned-lifting is snug fit in rack, and buffering is equipped on load sliding block and is added
Cylinder is carried, buffering load cylinder includes the stator bore being fixed on load sliding block, and load guide shaft, institute are fixedly installed on stator bore
It states the loading axis guiding that slides axially to be matched in stator bore, along guide shaft hole and disc spring chamber is axially arranged in loading axis, load is led
Axis is slidably arranged in guide shaft hole, and load guide shaft passes through disc spring chamber, and disc spring chamber lower end has support bottom wall, and disc spring chamber upper port is set
There is a limit end cap, load guide shaft, which is equipped with, is located at the intracavitary annular flange of disc spring, and disc spring is intracavitary to be equipped with and built up by several disc spring pieces
Disc spring column is buffered, buffering disc spring column one end is connected in the annular flange of load guide shaft, and the buffering disc spring column other end is connected to dish
Spring bottom of chamber portion, the annular flange of load guide shaft is relative to the other end and limit end cap backstop limit for abutting one end with buffering disc spring column
Position cooperation.Under structure design, simultaneously drive load nut is gone up and down the rotation of loading motor drive load lead screw with band dynamic loading sliding block,
Stator bore and load guide shaft are with load sliding block synchronization lifting, in load, the annular flange compression buffering disc spring of load guide shaft
Column pushes loading axis to implement load through buffering disc spring column, buffers the buffering when replacement load of disc spring column, guarantees that load stabilization can
It leans on；When unloading, under the action of buffering disc spring column, stable unloading is realized；Guide shaft and stator bore guarantee the installation of loading axis
It is reliable and stable with activity, it is reliable to guarantee load, and buffering disc spring column, compact overall structure are equipped in loading axis.
The invention will be further described below in conjunction with the accompanying drawings.
Detailed description of the invention
Fig. 1 is specific embodiment of the invention tapered roller bearing dynamic friction torque feature measurement machine structural schematic diagram one；
Fig. 2 is specific embodiment of the invention tapered roller bearing dynamic friction torque feature measurement machine structural schematic diagram two；
Fig. 3 is specific embodiment of the invention top view；
Fig. 4 is the cross-sectional view of the line A-A cutting along Fig. 3；
Fig. 5 is the cross-sectional view of the line B-B cutting along Fig. 3；
Fig. 6 is C portion partial enlarged view in Fig. 4；
Fig. 7 is specific embodiment of the invention clutch operating mechanism structural schematic diagram.
Specific embodiment
Referring to attached drawing 1 to 7, a kind of tapered roller bearing dynamic friction torque feature measurement machine disclosed by the invention, including
Rack 1, axial loading device 2 and rotary main shaft device 3 in rack 1, axial loading device 2 include loading axis 21 and
Loading mechanism 22, the load output end of loading axis 21 are equipped with loading head 211, and loading head 211 and tapered roller bearing to be measured 9 connect
It connects, rotary main shaft device 3 includes live spindle 31, main shaft supporting mechanism and driving motor 32, the driving rotation of driving motor 32
Main shaft 31 rotates, and the running part of driving motor 32 and live spindle 31 can be transmission belt and belt wheel cooperation or reducing gear
Wheel set etc. is this field routine techniques, therefore will not enumerate that the driving end of live spindle 31 is equipped with rolls with circular cone to be measured
The bearing mounting base to be measured 311 that sub- bearing 9 cooperates, through to be measured between the loading end of loading axis 21 and the driving end of live spindle 31
Tapered roller bearing 9 constitutes coaxial and relatively turnable connection, and the live spindle 31 is turned round equipped with non-contact flange
Square sensor 4, the axial one end of the rotor 41 of non-contact flange torque sensor 4 and live spindle 31 be fixedly and coaxially connected and with
Live spindle 31 rotates synchronously, in this specific embodiment, the rotor 41 and live spindle 31 of non-contact flange torque sensor 4
Between be attached through connecting flange 312, the axial other end of the rotor of non-contact flange torque sensor 4 41 is coaxially fixed to be connected
The bearing mounting base to be measured 311 is connect, the stator 42 of non-contact flange torque sensor 4 is matched with the side of rotor 41 accordingly
Side.Detection in this specific embodiment uses, and the outer ring of tapered roller bearing to be measured is axially loaded, i.e. loading head and circular cone to be measured
The outer ring of roller bearing cooperates, and bearing mounting base to be measured is fixedly mounted for the inner ring of tapered roller bearing to be measured.Using non-contact
Flange type torque sensor and live spindle cooperation, rotor one end of non-contact flange torque sensor is connected with live spindle
It rotates synchronously, the bearing assembly to be measured of other end connection rotates together in company with the rotor of non-contact flange torque sensor；To
It surveys in the shafting of tapered roller bearing and torque sensor composition, only one rotary part, to avoid generating corresponding attached
Square is reinforced, the accuracy of testing result is improved；In addition the moment of friction detection under axially different load condition can be achieved, accordingly
When cancelling axial load, the measurement of tapered roller bearing staring torque to be measured can also be achieved.Loading head can be gone up and down with loading axis
With with tapered roller bearing clutch to be measured.In order to preferably realize tapered roller bearing installation to be measured and without axial load condition
Under carry out starting moment of friction detection.
This specific embodiment is further, and the main shaft supporting mechanism includes live spindle seat 33, the first bearing support
34 and second bearing assembly 35, the first bearing support of one end 34, which is inputted, close to power in live spindle 31 is supported on live spindle
On seat 33, the second bearing assembly 35 includes the second supporting member 351 for supporting live spindle 31, second supporting member 351
Between the first bearing support 34 and the rotor 41 of non-contact flange torque sensor 4, the second supporting member 351 is located at rotation master
The close one end connecting with the rotor 41 of non-contact flange torque sensor 4 of axis 31, second supporting member 351 are led with rotation
Cooperate between axis 31 at the disengaging type that can be supported, be detached from, the second supporting member 351 is combined with its bearing of driving and is detached from live spindle
31 clutch operating mechanism 36.Live spindle is supported when required by the second supporting member, as moment of friction detects it
Before, needing to start live spindle, the second supporting member supports live spindle to guarantee stable starting and work, later,
The second supporting member is withdrawn, live spindle guarantees that live spindle slow-roll stabilization is reliable.
Second supporting member 351 be axially moveable the second bearing support 351 being set on live spindle seat, second
The inner ring hole of bearing support 351 is big end down taper type hole 3511, and live spindle 31 is along being axially arranged with and taper type hole
3511 compatible conical bearing portions 313, clutch operating mechanism drive the axial movement of the second bearing support 351 so that taper type hole
In the conical bearing portion 313 of 3511 bearings and disengaging live spindle 31.Taper type hole is formed as rolling bearing with interior ring support, rolling
Dynamic bearing inner ring is fixed on interior ring support, and the inner hole of interior ring support uses taper type hole；Certainly it is straight rolling bearing inner ring to can also be used
It connects and processes taper type hole, is i.e. rolling bearing inner ring and interior ring support is an integral structure.Under structure design, the second supporting member is
Design bearing, and with taper fit, have structure simple, cooperates reliable and stable advantage.Certainly as the main shaft shape to rotation
At the scheme of bearing, radially activity can be used also to realize the bearing part of clutch action, thimble such as circumferentially, or
Arc ring can fix rolling bearing etc. in live spindle to guarantee rolling friction.
Further, the live spindle seat 33 is equipped with release bearing seat ring 352, the outer ring of the second bearing support 351
It is fixedly mounted on release bearing seat ring 352,352 axial sliding fit of release bearing seat ring is separated on live spindle seat 33
One end of 3511 small end of taper type hole of axial corresponding second bearing support 351 of bearing race 352 is equipped with the second support shaft of driving
351 3511 bearing engagement of taper type hole is held in the reset spring 353 in conical bearing portion 313, on release bearing seat ring 352
Equipped with the multiple reset springs 353 circumferentially arranged, a big spring design is can also be used in certain reset spring；The clutch behaviour
One end pushing tow cooperation of driving end 3511 big end of taper type hole corresponding with the inner ring of the second bearing support 351 of motivation structure.Separation
Bearing race forms the second bearing support and installs, and the installation of the second bearing support is reliable and motion stability is reliable, the second bearing
Bearing is formed by spring to be resetted and supports to live spindle, guarantees that bearing is reliable；In addition, clutch operating mechanism is to separation
The inner ring of bearing race carries out pushing tow and reaches disengaging, has and is detached from reliably, at the outer ring of the second bearing support of reset spring pushing tow,
With reasonable structural arrangement.To make release bearing seat ring reliable in action, guide pin, guiding are equipped on release bearing seat ring
Pin shaft is fixed on live spindle seat, and release bearing seat ring is equipped with the guide hole cooperated with guide pin slide-and-guide.
To make the driving of axially loaded and live spindle realize collaboration, the power output end of the loading mechanism 22 with from
The operating side for closing operating mechanism 36 connects and acts synergistically, which is in 22 drive load axis 21 of loading mechanism to be measured
Drive the second bearing support 351 de- through clutch operating mechanism 36 when tapered roller bearing 9 applies rated load and the above load capacity
From live spindle 31.It is compact-sized using same power output, and realize when detection needs, it is axially loaded to needed for detecting
After load, guarantee that the second bearing support disengages live spindle, guarantees that detection is reliable.
The clutch operating mechanism 36 includes bearing separation driving slide 361, bearing separation driving lever 362 and pushing tow sliding sleeve
363, pushing tow sliding sleeve 363, which slides up and down, to be matched on live spindle seat 33, and pushing tow sliding sleeve 363 is interior with the second bearing support 351
The cooperation of lower axial end portion pushing tow is enclosed, pushing tow sliding sleeve 363 is combined with the disengaging yoke 364 that driving pushing tow sliding sleeve 363 moves axially, point
It is rotatably arranged in rack 1 from shift fork 364 at what can vertically be swung, disengaging yoke 364 includes shift fork arm 3641 and driving
Arm 3642, shift fork arm 3641 and actuating arm 3642 are divided into 364 rotating fulcrum two sides of disengaging yoke, the shift fork of disengaging yoke 364
Arm 3641 is connected with pushing tow sliding sleeve 363, and card slot 3631 is equipped on the side wall of pushing tow sliding sleeve 363, and disengaging yoke 364 is dialled
Yoke 3641 is equipped with idler wheel 3643, which is stuck in card slot 3631 and scrolling realization separation can dial in card slot 3631
The shift fork arm 3641 of fork 364 is connected with pushing tow sliding sleeve 363, and for disengaging yoke 364 when swinging, idler wheel 3643 is in card slot 3631
Interior rolling simultaneously realizes driving linkage, and the actuating arm 3642 of disengaging yoke 364 is equipped with linkage slot 3644, and linkage slot 3644 includes edge
The upper groove body 3644-1 and lower groove 3644-2 that its extending direction is sequentially distributed, upper groove body 3644-1 and lower groove 3644-2 are along upper
Lower dislocation arrangement and transition connection, the stroke and deviation post equidimension this field skill of upper groove body 3644-1 and lower groove 3644-2
Art personnel can voluntarily carry out selection processing according to the actual situation, and bearing separation driving lever 362 vertically extends arrangement and pivot fills
In in rack 1, bearing separation 362 lower end of driving lever is equipped with the lower linkage head 3621 that sliding guiding is matched in linkage slot 3644, axis
It holds separation driving lever 362 to be connected through lower linkage head 3621 and the actuating arm 3642 of disengaging yoke 364, bearing separation driving slide
361 drive lifting activity through loading mechanism 22, and bearing separation driving slide 361 is equipped with the driving lever driving guide groove extended up and down
3611, it includes along the first slot 3611-1 being sequentially arranged up and down and the second slot 3611-2, the first slot that driving lever, which drives guide groove 3611,
3611-1 and the second slot 3611-2 is along corresponding shaft bearing separation 362 swaying direction of driving lever in dislocation arrangement and transition connection, the first slot
The stroke of 3611-1 and the second slot 3611-2 and deviation post equidimension those skilled in the art according to the actual situation can be from travelings
Row selection processing, bearing separation 362 upper end of driving lever are equipped with the upper linkage head that sliding guiding is matched in driving lever driving guide groove 3611
3622, bearing separation driving lever 362 separates driving slide 361 with bearing through upper linkage head 3622 and is connected.The wherein upper head that links
3622 and lower linkage head 3621 be all made of on fixed pin shaft install roller structure setting.Under above-mentioned technical proposal, clutch actuating machine
Structure working principle is that for loading mechanism when drive load axis loads, loading mechanism drives bearing separation driving slide lifting simultaneously
Activity, the upper linkage head of bearing separation driving lever are oppositely oriented sliding in driving lever driving guide groove, and it includes corresponding to that driving lever, which drives guide groove,
Bearing separate driving lever swaying direction dislocation arrangement in the first slot and the second slot, in this way bearing separation driving lever upper linkage head exist
First slot and the second slot realize that driving bearing separation driving lever is swung when switching, bearing separates under driving lever wobbling action, lower linkage head
It is oriented to sliding in linkage slot, lower linkage head is in upper groove body and lower groove handoff procedure, above and below upper groove body and lower groove
Dislocation arrangement and transition connection, under lower linkage head effect, the wobble drive disengaging yoke that bearing separates driving lever is swung, and then is separated
Shift fork stirs pushing tow sliding sleeve lifting carriage, to carry out axial pushing tow to the second bearing support through pushing tow sliding sleeve and in reset spring
Spring force under reset；With compact-sized, the advantages of being easily installed debugging and reliable operation.
In addition, the loading mechanism 22 includes loading motor 221, load lead screw pair and load sliding block 222, lead screw is loaded
Pair includes mutually matched load lead screw 223 and load nut 224, the motor shaft and load lead screw 223 of the loading motor 221
Transmission connection, load nut 224 are fixedly installed on load sliding block 222, and 222 positioned-lifting of load sliding block is snug fit at rack
On 1, load sliding block 222 is matched in rack 1 through two guide post slide-and-guides, and buffering load cylinder is equipped on load sliding block 222,
Buffering load cylinder include the stator bore 225(that is fixed on load sliding block 222 its fixing assembling after parts processing can be used,
Can be used integrally formed), it is fixedly installed with load guide shaft 226 on stator bore 225, the loading axis 21 guiding that slides axially is matched
Together in stator bore 225, along guide shaft hole 212 and disc spring chamber 213 is axially arranged in loading axis 21, the sliding of load guide shaft 226 is set
It sets in guide shaft hole 212, load guide shaft 226 passes through disc spring chamber 213, and 213 lower end of disc spring chamber has support bottom wall, disc spring chamber 213
Upper port is equipped with limit end cap 2131, and load guide shaft 226 is equipped with the annular flange 2261 being located in disc spring chamber 213, disc spring chamber 213
It is interior equipped with the buffering disc spring column 227 built up by several disc spring pieces, buffer the ring that 227 one end of disc spring column is connected to load guide shaft 226
On shape flange 2261, buffering 227 other end of disc spring column is connected to 213 bottom of disc spring chamber, the annular flange 2261 of load guide shaft 226
Cooperate relative to the other end and limit 2131 backstop of end cap limit for abutting one end with buffering disc spring column 227.Loading motor driving
It loads lead screw rotation and drive load nut to go up and down with band dynamic loading sliding block, stator bore is synchronous with load sliding block with load guide shaft
Lifting, in load, the annular flange of load guide shaft compresses buffering disc spring column, pushes loading axis to implement to add through buffering disc spring column
It carries, buffering when buffering disc spring column replacement loads guarantees that load is reliable and stable；It is real under the action of buffering disc spring column when unloading
Now stable unloading；Guide shaft and stator bore guarantee that the installation of loading axis and activity are reliable and stable, it is reliable to guarantee load, and adding
It carries and is equipped with buffering disc spring column, compact overall structure in axis.
Claims (6)
1. a kind of tapered roller bearing dynamic friction torque feature measurement machine, including rack, the axially loaded dress in rack
Set and rotary main shaft device, axial loading device includes loading axis and loading mechanism, rotary main shaft device include live spindle,
Main shaft supporting mechanism and driving motor, the driving end of live spindle are equipped with the bearing to be measured cooperated with tapered roller bearing to be measured
Mounting base is constituted between the loading end of loading axis and the driving end of live spindle through tapered roller bearing to be measured coaxial and can be opposite
The connection of rotation, it is characterised in that: the live spindle is equipped with non-contact flange torque sensor, non-contact flange
Rotor axial one end of torque sensor is fixedly and coaxially connected with live spindle and rotates synchronously with live spindle, non-contact flange
The rotor axial other end of formula torque sensor is fixedly and coaxially connected the bearing mounting base to be measured, and non-contact flange torque passes
The stator of sensor is matched with the side of rotor accordingly, and the main shaft supporting mechanism includes live spindle seat, the first support shaft
Hold with the second bearing assembly, input the first bearing support of one end close to power in live spindle and be supported on live spindle seat,
Second bearing assembly includes the second supporting member for supporting live spindle, which is located at the first bearing support and non-contact
Between the rotor of flange type torque sensor, supporting member is located at close turn with non-contact flange torque sensor of live spindle
One end of son connection, cooperates between second supporting member and live spindle at the disengaging type that can be supported, be detached from, the second supporting member
It is combined with its bearing of driving and is detached from the clutch operating mechanism of live spindle.
2. tapered roller bearing dynamic friction torque feature measurement machine according to claim 1, it is characterised in that: described second
Supporting member is axially moveable the second bearing support being set on live spindle seat, and the inner ring hole of the second bearing support is upper
Small, lower big taper type hole, live spindle edge are axially arranged with conical bearing compatible with taper type hole portion, clutch operating mechanism
The second bearing support is driven to move axially so that in the conical bearing portion of the bearing of taper type hole and disengaging live spindle.
3. tapered roller bearing dynamic friction torque feature measurement machine according to claim 2, it is characterised in that: the rotation
Spindle drum is equipped with release bearing seat ring, and the outer ring of the second bearing support is fixedly mounted on release bearing seat ring, release bearing
In on live spindle seat, release bearing seat ring axially corresponds to the taper type hole small end of the second bearing support for seat ring axial sliding fit
One end be equipped with driving the second bearing support taper type hole bearing engagement in the reset spring in conical bearing portion, the clutch
One end pushing tow cooperation of driving end taper type corresponding with the inner ring of the second bearing support hole big end of operating mechanism.
4. tapered roller bearing dynamic friction torque feature measurement machine according to claim 3, it is characterised in that: the load
The power output end of mechanism connect and acts synergistically with the operating side of clutch operating mechanism, which is to drive in loading mechanism
Second is driven through clutch operating mechanism when dynamic loading axis applies rated load and the above load capacity to tapered roller bearing to be measured
It holds bearing and is detached from live spindle.
5. tapered roller bearing dynamic friction torque feature measurement machine according to claim 4, it is characterised in that: the clutch
Operating mechanism includes bearing separation driving slide, bearing separation driving lever and pushing tow sliding sleeve, and pushing tow sliding sleeve, which slides up and down, to be matched with
On live spindle seat, inner ring lower axial end portion's pushing tow of pushing tow sliding sleeve and the second bearing support cooperates, and pushing tow sliding sleeve is combined with drive
The disengaging yoke of dynamic pushing tow sliding sleeve axial movement, disengaging yoke are rotatably arranged in rack at what can vertically be swung, and separation is dialled
Fork includes shift fork arm and actuating arm, and shift fork arm and actuating arm are divided into disengaging yoke rotating fulcrum two sides, and disengaging yoke is dialled
Yoke is connected with pushing tow sliding sleeve, and the actuating arm of disengaging yoke is equipped with linkage slot, linkage slot include extend along direction according to
The upper groove body and lower groove of secondary distribution, upper groove body and lower groove vertically misplace arrangement and transition connect, bearing separation driving lever edge
Up and down direction is disposed to extend and is installed in rack, under bearing separation driving lever lower end is matched in linkage slot equipped with sliding guiding
Link head, and bearing separation driving lever is connected through the actuating arm of lower linkage head and disengaging yoke, and bearing separation driving slide is through adding
Mounted mechanism drives lifting activity, and bearing separation driving slide is equipped with the driving lever driving guide groove extended up and down, and driving lever drives guide groove
Including separating driving lever swaying direction along corresponding shaft bearing along the first slot and the second slot being sequentially arranged up and down, the first slot and the second slot
In dislocation arrangement and transition connection, bearing separation driving lever upper end is equipped with the upper linkage that sliding guiding is matched in driving lever driving guide groove
Head, bearing separation driving lever separate driving slide with bearing through upper linkage head and are connected.
6. the according to claim 1 or 2 or 3 or 4 or 5 tapered roller bearing dynamic friction torque feature measurement machines, feature
Be: the loading mechanism includes loading motor, load lead screw pair and load sliding block, and load lead screw pair includes mutually matched
Lead screw and load nut are loaded, the motor shaft of the loading motor is connect with load lead screw transmission, and load nut is fixedly installed in
On load sliding block, load sliding block positioned-lifting is snug fit in rack, and buffering load cylinder is equipped on load sliding block, and buffering adds
Carrying cylinder includes the stator bore being fixed on load sliding block, and load guide shaft, the loading axis axis are fixedly installed on stator bore
It is matched in stator bore to slide-and-guide, along guide shaft hole and disc spring chamber is axially arranged in loading axis, the sliding of load guide shaft is arranged
In guide shaft hole, load guide shaft passes through disc spring chamber, and disc spring chamber lower end has support bottom wall, and disc spring chamber upper port is equipped with positive stop end
Lid, load guide shaft, which is equipped with, is located at the intracavitary annular flange of disc spring, and disc spring is intracavitary equipped with the buffering disc spring built up by several disc spring pieces
Column, buffering disc spring column one end are connected in the annular flange of load guide shaft, and the buffering disc spring column other end is connected to disc spring bottom of chamber portion,
The annular flange of load guide shaft cooperates relative to the other end and limit end cap backstop limit for abutting one end with buffering disc spring column.
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| CN107300469B true CN107300469B (en) | 2019-06-25 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612616B (en) * | 2018-12-30 | 2021-06-01 | 洛阳轴承研究所有限公司 | Friction torque measuring device of angular contact radial bearing |
| PL239723B1 (en) * | 2019-01-25 | 2022-01-03 | Fabryka Lozysk Tocznych Krasnik Spolka Akcyjna | Device for testing anti-torques of cone bearings with the measuring sensor positioning mechanism |
| CN110307980A (en) * | 2019-08-21 | 2019-10-08 | 中车株洲电机有限公司 | A kind of traction electric machine is axial to quantify loading device and its operating method |
| 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 |
| CN111623984B (en) * | 2020-05-17 | 2021-12-14 | 浙江来福谐波传动股份有限公司 | Dynamic torque testing machine of crossed roller bearing for harmonic reducer |
| CN111595581B (en) * | 2020-05-17 | 2021-10-26 | 浙江来福谐波传动股份有限公司 | Dynamic torque testing method of special crossed roller bearing for harmonic reducer |
| CN113049154B (en) * | 2021-03-10 | 2021-11-30 | 上海交通大学 | Space momentum wheel bearing friction torque testing machine and testing method thereof |
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Address after: 325000 Wenzhou economic and Technological Development Zone, Wenzhou, Wenzhou, Zhejiang Province, No. 515, seashore Patentee after: C&U Co.,Ltd. Patentee after: SHANGHAI C&U GROUP Co.,Ltd. Address before: 325000 Wenzhou economic and Technological Development Zone, Wenzhou, Wenzhou, Zhejiang Province, No. 515, seashore Patentee before: C & U Group Ltd. Patentee before: SHANGHAI C&U GROUP Co.,Ltd. |