CN109387177A - A kind of contact angle measuring method of nonstandard angular contact ball bearing - Google Patents
A kind of contact angle measuring method of nonstandard angular contact ball bearing Download PDFInfo
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- CN109387177A CN109387177A CN201811422630.2A CN201811422630A CN109387177A CN 109387177 A CN109387177 A CN 109387177A CN 201811422630 A CN201811422630 A CN 201811422630A CN 109387177 A CN109387177 A CN 109387177A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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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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- A Measuring Device Byusing Mechanical Method (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A kind of contact angle measuring method of nonstandard angular contact ball bearing, inner ring in nonstandard angular contact ball bearing has special-shaped boss, in such a way that constantly acting load block applies centric axial load to nonstandard angular contact ball bearing, can accurately and quickly measurement outer ring and retainer rotating cycle, the contact angle that formula calculates nonstandard angular contact ball bearing is borrowed by contact angle and nonstandard angular contact ball bearing again, the method being loaded directly into using constantly acting load block, load is reliable, accurately, guarantee that steel ball pure rolling in raceway does not generate sliding during Contact-angle measurement, and inner ring, juxtaposition metamorphose is not generated between outer ring and steel ball, this mode has steady, without impact, quick and easy to operate feature, centric axial load load is using the positioning that is once loaded, eliminating installation position error influences, it ensure that Contact-angle measurement precision, it removes For can be applicable to the measurement of standard angular contact ball bearing contact angle except the nonstandard angular contact ball bearing contact angle of measurement accurately and quickly.
Description
Technical field
The invention belongs to bearing measuring technical fields, are related specifically to a kind of Contact-angle measurement of nonstandard angular contact ball bearing
Method.
Background technique
In many shafting structures, angular contact ball bearing generally use it is pairs of or it is multi-joint assemble use, its purpose is to
The bearing capacity and rigidity of angular contact ball bearing in main shaft are improved, and then improves its service life.
Contact angle is an important parameter of angular contact ball bearing, it is the Con trolling index of Combined Angular Contact Ball Bearings
One of.
In Combined Angular Contact Ball Bearings, covering the mutual difference of contact angle between bearing to the list that participation assembles has strictly
Requirement, to guarantee to assemble angular contact ball bearing and can play optimum performance, it is therefore necessary to the contact angle of diagonal contact ball bearing into
The accurate measurement of row, and usually only the nominal contact angle of diagonal contact ball bearing measures in practical application.
According to kinematic principle, when inner ring is fixed, and outer ring rotates, there is such as ShiShimonoseki in contact angle and angular contact ball bearing
System:
In above-mentioned formula: α-contact angle；DwBall size；DeOuter ring channel diameter size；diInner ring ditch diameter size；nIt protects-
Retainer revolving speed circle number；nOutsideOuter ring revolving speed circle number.
From above formula it is found that the contact angle α of angular contact ball bearing is De、di、Dw、nIt protectsAnd nOutsideFunction, it can not be carried out directly
Measurement.
Method current in bearing industry is indirect measurement other parameters, D at presente、diAnd DwIt can accurately measure, therefore only
It wants that two values can be measured, then obtains contact angle α value by calculating.
Usual nIt protectsAnd nOutsideThere are following several measurement methods:
One, is using machinery-electric combination measurement.
Two, are using pneumatic-machinery-photoelectric combination measurement.
Three, are measured using artificial simple and easy method.
Above-mentioned one, two two methods can be used for the angular contact ball bearing of standard series or outer shape rule
Meet measurement accuracy requirement.It can also be measured using above-mentioned three method, but measurement method is original and its precision is low, is not able to satisfy
Measurement accuracy requirement.
And the Contact-angle measurement of the nonstandard size angular contact ball bearing for outer shape irregular, with above-mentioned three kinds of sides
More or less there is measurement defect in method, for example axial load is inconvenient to load, measuring probe can not be mounted on correctly in measurement
Measurement position and reading etc., and above-mentioned three kinds of methods are in use due to being tested nonstandard angular contact ball bearing contour structures
Limitation there are certain limitations, nonstandard angular contact ball bearing measurement demand cannot be fully met.
Summary of the invention
In order to solve the measurement demand of contact angle in nonstandard angular contact ball bearing, the present invention provides a kind of nonstandard angular contacts
The contact angle measuring method of ball bearing, the contact angle measuring method are applied by constantly acting load block to nonstandard angular contact ball bearing is tested
Add the mode of centric axial load, can the nonstandard angular contact ball bearing of measurement accurately and quickly contact angle.
For achieving the above object, the present invention adopts the following technical scheme:
A kind of contact angle measuring method of nonstandard angular contact ball bearing, nonstandard angular contact ball bearing include outer ring, steel ball, guarantor
Frame and inner ring are held, inner ring has special-shaped boss, and contact angle and nonstandard angular contact ball bearing borrow formula are as follows:
In above-mentioned formula: α-contact angle, DwBall size, DeOuter ring channel diameter size, diInner ring ditch diameter size, nIt protectsIt protects
Hold frame revolving speed circle number, nOutsideOuter ring revolving speed circle number, wherein De、diAnd DwIt is surveyed by nonstandard angular contact ball bearing, the contact
Angle measuring method uses a set of measuring device, measures n by the measuring deviceIt protectsAnd nOutside, resulting n will be measuredIt protectsAnd nOutside
Together with De、diAnd DwThe contact angle α of nonstandard angular contact ball bearing, the apparatus for measuring contact angle can be found out by bringing above-mentioned formula into
Include main shaft, dial, positioning footstock, adjusting nut, cylindrical slip ring, load block, instruction pole socket, short indicating arm, bearing
Bar, long indicating arm, pedestal and index block, wherein main shaft couples with motor transmission system and angle fine-adjustment mechanism, motor drive system
System and angle fine-adjustment mechanism are controlled by electric control system, it is characterized in that:
The center of main shaft is equipped with inner hole and the upper end is provided with boss, and main shaft lower end couples with motor, and main shaft is fixed on
In the centre bore of pedestal and there are running clearances between main shaft and pedestal, and be fixedly connected dial on the boss of main shaft, scale
The upper surface of disk is 1~2mm lower than main shaft boss upper surface, the gap control between the lower end surface and pedestal upper surface of dial
In 2~3mm, dial is provided with one and horizontal plane into the inclined-plane of 30 ° of angles along outer circular direction, scale mark on the inclined-plane
There are graduation mark and number, be divided into 1 ° between the graduation mark circumference minimum graduation, the number marked at interval of 10 ° and clockwise is respectively
For 0 °, 10 °, 20 °, 30 ° ..., 350 °；Pass through screw attachment fixed index block and index block by the upper end of pedestal and dial
There are gaps between dial outer；
The upper end of positioning footstock sets big concave station inner hole and small concave station inner hole there are two concentric but different inner diameters, described big
The internal diameter of concave station inner hole is equal to outer ring outer diameter and the big concave station inner hole and outer ring clearance fit, the depth of the big concave station inner hole
The half of outer ring height, the internal diameter of the small concave station inner hole is equal to outer ring internal diameter, the small concave station inner hole it is deep-controlled 2
~3mm；The lower end of positioning footstock sets big boss outer circle and small boss outer circle there are two concentric but various outer diameter, described big convex
The outer diameter of platform outer circle is equal to the outer diameter of main shaft boss, and the height of the big boss outer circle controls outside 2~3mm, the small boss
Round outer diameter is equal to the internal diameter of inner hole of spindle, and the height of the small boss outer circle is controlled in 10~15mm, the small boss outer circle
It is connected and fixed in inner hole of spindle with inner hole of spindle clearance fit and by several screws by footstock is positioned；
The top of load block is cylindrical and the existing outer diameter boss in its underpart has the concentric cylindrical part of inner hole concave station, institute
The centre for stating cylindrical generatrix is provided with 2~3 threaded holes along its circumference uniform distribution, and the internal diameter of the inner hole concave station is equal to inner ring
Outer diameter at boss and be clearance fit, the depth of the inner hole concave station is equal to total height+[2~3] mm of inner ring boss, the outer diameter
The lower end surface of boss is adjacent to inner ring boss lower surface, is adjacent to rear load block and is transmitted to the axial load of inner ring with this, is furthermore existed
The lower semisection of the outer diameter boss is provided with external screw thread, couples adjusting nut by the external screw thread, cylindrical slip ring is with gap
Cooperation coupling sleeve is on the outer diameter boss and cylindrical slip ring is located at the top of adjusting nut, and adjusting nut is for adjusting circle
Upper-lower height of the tubular slip ring on the outer diameter boss is provided with radial hole in the centre of cylindrical slip ring bus, passes through institute
The small column boss of radial hole connection support rod left end is stated, the big cylinder boss of support rod right end is provided centrally with vertical interior logical
Hole couples long indicating arm in the inner via hole and long indicating arm is fixed in the inner via hole by screw, long indicating arm
For elongate rod and its lower end is in cone tip shape, and the height on the inclined-plane in the cone and dial of long indicating arm can be adjusted by screw
Low tone away from；The instruction pole socket coupling sleeve that left-right position can adjust is mounted in support rod left end, in the lower end of instruction pole socket is provided with
Threaded hole, it is also in cone tip shape that the internal thread hole, which couples short indicating arm and the lower end of indicating arm, by short indicating arm with it is described interior
The length that is screwed on of threaded hole can adjust the cone of short indicating arm and the height spacing of retainer end face, after thus coupling, cylinder
Shape slip ring, instruction pole socket, short indicating arm, support rod and long indicating arm just constitute an integral measuring reading component, should
Integral measuring, which reads component, to be rotated by hand rotary bearing rod around load block circumferencial direction；
N can be measured under the cooperation of above-mentioned measuring deviceIt protectsAnd nOutsideTwo values, since outer ring is conventional structure,
nOutsideIts set value calculation is preferred in 15~25 circles under the experiment repeatedly of measuring device, in nOutsideIts n when=20It protectsMeasurement process such as
Under:
1. the whole series, which are tested nonstandard angular contact ball bearing with outer ring, is after positioning footstock is packed into main shaft and is fastened with screw
Benchmark be placed in down positioning footstock in, and the upper surface of retainer depicted on radially one it is readily identified
Markings, the width of the markings is no more than 1.2mm；
2. cylindrical slip ring is coupled with load block outer diameter boss and is set in together and screws on adjustment spiral shell, then in load block
Hole concave station couples cooperation with the top abnormity boss of inner ring, and completes whole installations of the integral measuring reading component；
3. unclamping in the integral measuring reading component and indicating respective screw in pole socket and support rod, long indicating arm is adjusted
Upper and lower position and make the inclined-plane groove distance controlling of its cone and dial 2 in 2~4mm then lock-screw, adjustment instruction
The upper and lower position of the left-right position of pole socket and short indicating arm makes the cone of short indicating arm be directed at the markings widthwise central of retainer
And its cone and the end face markings height of retainer, at a distance of 2~4mm, last lock-screw simultaneously completes the integral measuring reading
The position of component adjusts；
4. driving dial rotation by the handwheel for rotating the angle fine-adjustment mechanism, making " 0 " groove of dial and referring to
" 0 " the groove alignment of block is marked, then rotates load block with hand and drives inner ring to rotate retainer and the integral measuring reading group
Part makes the cone of short indicating arm and the cone of long indicating arm in the integral measuring reading component be respectively aligned to retainer markings
" 0 " groove at center and dial 2, as the initial position of retainer measurement；
Main shaft is driven to rotate clockwise and drive the rotation synchronous with outer ring of dial, positioning footstock 5. starting the motor
Turning, revolving speed control is in 0.5~1 circle/second, while retainer is rotate in same direction with the revolving speed lower than outer ring, while outer ring rotating,
Under being learnt by heart using the end face markings of the cone of short indicating arm and retainer as starting reference point at this time retainer from beginning to rotate to
When stopping, maximum number of full circle that the end face markings of retainer 6 are turned over by short indicating arm cone；When outer ring and dial rotation
To nOutsideWhen=20 circle, the electric control system issues the urgent stalling of instruction, outer ring and dial stalling, due to inertia and machinery
The influence of driving error, " 0 " groove of dial can not be aligned with " 0 " groove of index block after stalling, pass through rotation at this time
The handwheel of the angle fine-adjustment mechanism is directed at " 0 " groove of dial with " 0 " groove of index block, then with hand rotating support
Bar makes the cone of short indicating arm thereon be directed at the distinguishing mark line center of retainer 6, records the cone institute of this duration indicating arm
Angle-differentiated number of the scale of finger relative to " 0 " groove of dial, the maximum that the retainer under front is learnt by heart in addition turns over are whole
The total angle i.e. number of total coils n that circle number, as retainer turn overIt protects；
6. by the n of above-mentioned measurementIt protectsValue and nOutside=20 circles are together with D measured directlye、diAnd DwValue substitutes into above-mentioned formula together
After calculating, the contact angle α value of nonstandard angular contact ball bearing can be measured.
Due to using technical solution as described above, the present invention is had a characteristic that
1. the centric axial load load in the present invention, being tested nonstandard angular contact ball bearing uses the positioning that is once loaded,
Eliminating installation position error influences, and ensure that the precision of Contact-angle measurement.
2. the method that the present invention is loaded directly into using constantly acting load block, load is reliable, accurate, guarantees in Contact-angle measurement mistake
Steel ball pure rolling in raceway does not generate sliding in journey, and juxtaposition metamorphose is not generated between inner ring, outer ring and steel ball, this mode
Have the characteristics that it is steady, without impact, quick and easy to operate.
3. contact angle measuring method of the invention is in addition to for the nonstandard angular contact ball bearing contact of measurement accurately and quickly
Except angle, the measurement of standard angular contact ball bearing contact angle can be applicable to.
Detailed description of the invention
Fig. 1 is the partial structurtes simplified schematic diagram of measuring device of the present invention.
Fig. 2 is the local overlooking structure schematic diagram of dial and index block.
In above-mentioned figure: 1- main shaft；2- dial；3- positions footstock；The outer ring 4-；5- steel ball；6- retainer；
7- inner ring；8- adjusting nut；9- cylindrical slip ring；10- load block；11- indicates pole socket；The short indicating arm of 12-；13- branch
Hold bar；14- long indicating arm；15- pedestal；16- index block.
Specific embodiment
A kind of contact angle measuring method of nonstandard angular contact ball bearing of the invention is borrowed to following formula:
In conjunction with Fig. 1, nonstandard angular contact ball bearing includes that outer ring, steel ball, retainer and inner ring, especially inner ring have abnormity
Boss, there are essential distinctions for the structure of it and conventional inner ring, therefore nonstandard angular contact ball bearing is in above-mentioned formula: α-contact
Angle, DwBall size, DeOuter ring channel diameter size, diInner ring ditch diameter size, nIt protectsRetainer revolving speed circle number, nOutsideOuter ring revolving speed circle
It counts, wherein De、diAnd DwIt is surveyed by nonstandard angular contact ball bearing, which uses a set of measurement to fill
It sets, n is measured by the measuring deviceIt protectsAnd nOutside, resulting n will be measuredIt protectsAnd nOutsideTogether with De、diAnd DwBring above-mentioned formula into i.e.
The contact angle α of nonstandard angular contact ball bearing can be found out.
In conjunction with Fig. 1-2, measuring device of the invention includes main shaft 1, dial 2, positioning footstock 3, adjusting nut 8, circle
Tubular slip ring 9, load block 10, instruction pole socket 11, short indicating arm 12, support rod 13, long indicating arm 14, pedestal 15 and index block
16。
Related measuring device structure connecting mode of the invention and nonstandard angular contact ball is measured by the measuring device
The method of bearing contact angle does not repeat separately referring to the technical solution.
Firstly the need of being described as follows several points:
1, in Fig. 1 present invention omits motor transmission system, angle fine-adjustment mechanism and electric control system etc., but main shaft with
Motor transmission system and angle fine-adjustment mechanism connection, motor transmission system and angle fine-adjustment mechanism are controlled by electric control system.
Simultaneously in order to keep measuring device structure of the present invention simple, measurement method is easy to accomplish, and inner ring is set in contact angle measuring method
Fixed and outer ring rotates.
2, by the upper end of pedestal and dial by screw attachment fixed index block and index block and dial outer it
Between there are gap, the gap be subject to guarantees main shaft drive scale disc spins when do not interfered with index block.
3, load block is for applying centric axial load to the inner ring for being measured nonstandard angular contact ball bearing.Load block
10 weight please refers to bearing industry relevant criterion and chooses design, generally to fix to inner ring after inner ring application centric axial load
And steel ball pure rolling in raceway does not generate subject to sliding when the rotation of outer ring, and is connect with not generating between inner ring, outer ring and steel ball
Subject to thixotroping shape.
4, the centre of the cylindrical generatrix is provided with 2~3 threaded holes along its circumference uniform distribution on load block, effect
It is the coupled position for reserving mountable other anti-rotation members, to prevent the load block in measurement process from own rotation may occur.
5, cylindrical slip ring, instruction pole socket, short indicating arm, support rod and long indicating arm just constitute an integrated survey
Amount reading component, which, which reads component, to be rotated by hand rotary bearing rod around load block circumferencial direction.
6, the method using load block directly to inner ring load, load is reliable, accurate, guarantees in Contact-angle measurement process
Middle steel ball pure rolling in raceway does not generate sliding, and juxtaposition metamorphose is not generated between inner ring, outer ring and steel ball, and this mode has
Have steadily, without impact, quick and easy to operate feature.
7, after positioning footstock is packed into main shaft and is fastened with screw, the whole series, which are tested nonstandard angular contact ball bearing with outer ring, is
Benchmark is placed in down in positioning footstock, and the positioning connection for positioning footstock is reliable.
8, anti-rotation device is installed additional using the threaded hole of load block outer diameter when necessary in measurement process, prevent load block from turning
It is dynamic.When calculating, nIt protectsAnd nOutsideUnit it is noted that unified.When main shaft rotates clockwise, the graduation mark on dial is also up time
Drypoint is drawn.When main shaft is to rotate counterclockwise, the graduation mark on dial must also be delineated counterclockwise, if the two is not in the same direction
Calculated result just will appear mistake.
9, due in measurement process outer ring and main shaft synchronize rotate clockwise, i.e. the revolving speed circle number and main shaft of outer ring turns
Speed circle number is equal, and the revolving speed circle number of main shaft can be previously set, i.e. the revolving speed circle number of outer ring 4 is regarded as given value, therefore
The revolving speed circle number n of retainer need to only be measuredOutside?.In order to guarantee precision, the accuracy and efficiency of measurement, the revolving speed circle number of main shaft
It is usually set to 20 circles, i.e. the revolving speed circle number n of outer ring 4Outside=20 circles.
The essence of this method be in order to measure the revolving speed circle number of retainer after, to calculate nonstandard angular contact ball bearing
Contact angle values can be applicable to standard other than for the nonstandard angular contact ball bearing contact angle of measurement accurately and quickly
The measurement of angular contact ball bearing contact angle.
Claims (1)
1. a kind of contact angle measuring method of nonstandard angular contact ball bearing, nonstandard angular contact ball bearing includes outer ring (4), steel ball
(5), retainer (6) and inner ring (7), inner ring (7) have special-shaped boss, and contact angle and nonstandard angular contact ball bearing borrow formula
It is as follows:
In above-mentioned formula: α-contact angle, DwBall size, DeOuter ring channel diameter size, diInner ring ditch diameter size, nIt protectsRetainer
Revolving speed circle number, nOutsideOuter ring revolving speed circle number, wherein De、diAnd DwIt is surveyed by nonstandard angular contact ball bearing, which surveys
Amount method uses a set of measuring device, measures n by the measuring deviceIt protectsAnd nOutside, resulting n will be measuredIt protectsAnd nOutsideTogether with
De、diAnd DwThe contact angle α of nonstandard angular contact ball bearing can be found out by bringing above-mentioned formula into, and the apparatus for measuring contact angle includes
Main shaft (1), dial (2), positioning footstock (3), adjusting nut (8), cylindrical slip ring (9), load block (10), instruction pole socket
(11), short indicating arm (12), support rod (13), long indicating arm (14), pedestal (15) and index block (16), wherein main shaft (1) with
Motor transmission system and angle fine-adjustment mechanism connection, motor transmission system and angle fine-adjustment mechanism are controlled by electric control system,
It is characterized in that:
The center of main shaft is equipped with inner hole and the upper end is provided with boss, and main shaft lower end couples with motor, and main shaft is fixed on pedestal
Centre bore in and there are running clearances between main shaft and pedestal, be fixedly connected dial on the boss of main shaft, dial
Upper surface is 1~2mm lower than main shaft boss upper surface, and the gap between the lower end surface and pedestal upper surface of dial is controlled 2
~3mm, dial are provided with one and horizontal plane into the inclined-plane of 30 ° of angles along outer circular direction, there is scale mark on the inclined-plane
Graduation mark and number are divided into 1 ° between the graduation mark circumference minimum graduation, and the number marked at interval of 10 ° and clockwise is respectively
0°,10°,20°,30°,…,350°；By the upper end of pedestal and dial by screw attachment fixed index block and index block with
There are gaps between dial outer；
The upper end of positioning footstock sets big concave station inner hole and small concave station inner hole there are two concentric but different inner diameters, the big concave station
The internal diameter of inner hole is equal to outer ring outer diameter and the big concave station inner hole and outer ring clearance fit, the depth of the big concave station inner hole are outer
Enclose the half of height, the internal diameter of the small concave station inner hole is equal to outer ring internal diameter, the small concave station inner hole it is deep-controlled 2~
3mm；The lower end of positioning footstock sets big boss outer circle and small boss outer circle there are two concentric but various outer diameter, the big boss
The outer diameter of outer circle is equal to the outer diameter of main shaft boss, and the height of the big boss outer circle is controlled in 2~3mm, the small boss outer circle
Outer diameter be equal to the internal diameter of inner hole of spindle, the height control of the small boss outer circle in 10~15mm, the small boss outer circle with
Inner hole of spindle clearance fit is simultaneously connected and fixed in inner hole of spindle by several screws by footstock is positioned；
The top of load block is cylindrical and the existing outer diameter boss in its underpart has the concentric cylindrical part of inner hole concave station, the circle
The centre of cylindricality bus is provided with 2~3 threaded holes along its circumference uniform distribution, and the internal diameter of the inner hole concave station is equal to inner ring boss
The outer diameter at place and be clearance fit, the depth of the inner hole concave station is equal to total height+[2~3] mm of inner ring boss, the outer diameter boss
Lower end surface be adjacent to inner ring boss lower surface, be adjacent to rear load block and the axial load of inner ring transmitted with this, furthermore described
The lower semisection of outer diameter boss is provided with external screw thread, couples adjusting nut by the external screw thread, cylindrical slip ring is with clearance fit
Coupling sleeve is on the outer diameter boss and cylindrical slip ring is located at the top of adjusting nut, and adjusting nut is for adjusting cylindrical shape
Upper-lower height of the slip ring on the outer diameter boss is provided with radial hole in the centre of cylindrical slip ring bus, passes through the diameter
To the small column boss of hole connection support rod left end, the big cylinder boss of support rod right end is provided centrally with vertical inner via hole,
Couple long indicating arm in the inner via hole and long indicating arm is fixed in the inner via hole by screw, long indicating arm is thin
Stock and its lower end are in cone tip shape, can be adjusted in the cone and dial of long indicating arm between the height on the inclined-plane by screw
Away from；The instruction pole socket coupling sleeve that left-right position can adjust is mounted in support rod left end, and the lower end of instruction pole socket is provided with internal screw thread
Hole, it is also in cone tip shape that the internal thread hole, which couples short indicating arm and the lower end of indicating arm, passes through short indicating arm and the internal screw thread
The length that is screwed in hole can adjust the cone of short indicating arm and the height spacing of retainer end face, and after thus coupling, cylindrical shape is sliding
Ring, instruction pole socket, short indicating arm, support rod and long indicating arm just constitute an integral measuring reading component, this is integrated
Survey measurements component can be rotated by hand rotary bearing rod around load block circumferencial direction；
N can be measured under the cooperation of above-mentioned measuring deviceIt protectsAnd nOutsideTwo values, since outer ring is conventional structure, nOutside?
Its set value calculation is preferred in 15~25 circles under the experiment repeatedly of measuring device, in nOutsideIts n when=20It protectsMeasurement process it is as follows:
1. the whole series are tested nonstandard angular contact ball bearing on the basis of outer ring after positioning footstock is packed into main shaft and is fastened with screw
Placed face down depicts a readily identified mark in the upper surface of retainer in positioning footstock on radially
The width of will line, the markings is no more than 1.2mm；
2. cylindrical slip ring is coupled with load block outer diameter boss and is set in together and screws on adjustment spiral shell, then load block inner hole is recessed
Platform couples cooperation with the top abnormity boss of inner ring, and completes whole installations of the integral measuring reading component；
3. unclamping in the integral measuring reading component and indicating respective screw in pole socket and support rod, the upper of long indicating arm is adjusted
Lower position simultaneously makes the inclined-plane groove distance controlling of its cone and dial 2 in 2~4mm and then lock-screw, adjustment instruction pole socket
Left-right position and short indicating arm upper and lower position, make short indicating arm cone be aligned retainer markings widthwise central and its
At a distance of 2~4mm, last lock-screw simultaneously completes the integral measuring reading component for cone and the end face markings height of retainer
Position adjustment；
4. driving dial rotation by the handwheel for rotating the angle fine-adjustment mechanism, make " 0 " groove and index block of dial
The alignment of " 0 " groove, then rotate load block with hand and inner ring driven to read component to rotate retainer and the integral measuring, make
The cone of short indicating arm and the cone of long indicating arm are respectively aligned to retainer markings center in the integral measuring reading component
With " 0 " groove of dial 2, the initial position measured as retainer；
It drives main shaft to rotate clockwise and drive dial, positioning footstock and outer ring synchronous rotary 5. starting the motor, turns
Speed control is in 0.5~1 circle/second, while retainer is rotate in same direction with the revolving speed lower than outer ring, while outer ring rotating, with short
The end face markings of the cone of indicating arm and retainer are that retainer stops from beginning to rotate at this time under starting reference point is learnt by heart
When, maximum number of full circle that the end face markings of retainer 6 are turned over by short indicating arm cone；When outer ring and dial rotation to nOutside
When=20 circle, the electric control system issues the urgent stalling of instruction, outer ring and dial stalling, due to inertia and machine driving
The influence of error, " 0 " groove of dial can not be aligned with " 0 " groove of index block after stalling, at this time by described in rotation
The handwheel of angle fine-adjustment mechanism is directed at " 0 " groove of dial with " 0 " groove of index block, then with hand rotary bearing rod, makes
The distinguishing mark line center of the cone alignment retainer 6 of short indicating arm thereon, records the cone meaning of this duration indicating arm
Angle-differentiated number of the scale relative to " 0 " groove of dial, the maximum number of full circle that the retainer under front is learnt by heart in addition turns over,
The as total angle i.e. number of total coils n that turns over of retainerIt protects；
6. by the n of above-mentioned measurementIt protectsValue and nOutside=20 circles are together with D measured directlye、diAnd DwValue substitutes into above-mentioned formula together and calculates
Afterwards, the contact angle α value of nonstandard angular contact ball bearing can be measured.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811422630.2A CN109387177B (en) | 2018-11-27 | 2018-11-27 | Contact angle measuring method of non-standard angular contact ball bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811422630.2A CN109387177B (en) | 2018-11-27 | 2018-11-27 | Contact angle measuring method of non-standard angular contact ball bearing |
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| CN109387177A true CN109387177A (en) | 2019-02-26 |
| CN109387177B CN109387177B (en) | 2020-08-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440676A (en) * | 2019-07-31 | 2019-11-12 | 无锡诚石轴承有限公司 | Contact angle measurement |
| CN114136617A (en) * | 2021-11-29 | 2022-03-04 | 中国航发哈尔滨轴承有限公司 | Dynamic monitoring method for high-speed spindle bearing |
| CN114235403A (en) * | 2021-12-17 | 2022-03-25 | 杭州电子科技大学 | A device and method for measuring the contact angle of a four-point angular contact ball bearing |
| CN114370831A (en) * | 2021-12-30 | 2022-04-19 | 中国科学院沈阳自动化研究所 | A contact angle measuring device based on angular contact ball bearing assembly line |
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| CN114136617B (en) * | 2021-11-29 | 2023-09-08 | 中国航发哈尔滨轴承有限公司 | Dynamic monitoring method for high-speed main shaft bearing |
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