CN110345851A - A kind of rail dampener symmetry checking device - Google Patents
A kind of rail dampener symmetry checking device Download PDFInfo
- Publication number
- CN110345851A CN110345851A CN201910795852.7A CN201910795852A CN110345851A CN 110345851 A CN110345851 A CN 110345851A CN 201910795852 A CN201910795852 A CN 201910795852A CN 110345851 A CN110345851 A CN 110345851A
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- dial gauge
- fixed plate
- pedestal
- folder
- plate
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 50
- 238000005259 measurement Methods 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a kind of rail dampener symmetry checking devices, bottom plate including being arranged horizontally in ground, on front side of plate top surface, rear side is respectively provided with the linear guide of horizontal cross arrangement, two linear guide tops are equipped with horizontal slide plate, vertical elbow holder is equipped on front side of slide plate top surface, elbow holder top surface is fixed with elbow folder, vertical positioning seat is equipped on rear side of slide plate top surface, damper member is installed on positioning seat, bottom plate left part is equipped with vertical fixed plate, the square hole for extending transversely through fixed plate is provided in fixed plate, two vertical table bars are equipped on the left of fixed plate, on front side of fixed plate, rear side is respectively provided with a vertical table bar, dial gauge table folder is designed on every table bar.The invention has the benefit that can not only the symmetry of rapid survey workpiece and easy to operate, precision is high.
Description
Technical field
The invention belongs to the technical fields that symmetry is examined, and in particular to a kind of rail dampener symmetry checking device.
Background technique
Symmetry controls a size characteristic and another two feature or a uniform centering of size characteristic, for example requires one
Feature is in the midpoint on part width, symmetry be in controlled feature with respect to the control of the central point of point element, such as
Median plane and center line, all midpoints must be fallen on the median plane of this part in ideal controlled feature, and symmetry is right
Claim most important in the processing of part.
Elbow folder is a kind of existing fixture, by the upper lift and pushing of handle, can control the upper lift of pressure head and push, and
It is not easy to unclamp after compression.
Dial gauge is to amplify, become pointer and exist the small linear movement of measuring staff caused by measured size by gear drive
Rotation on dial, to read the size of measured size, dial gauge will be surveyed using rack pinion or lever-gear transmission
The straight-line displacement of bar becomes the measurement instrument of the angular displacement of pointer, and dial gauge is mainly used for measuring size and shape, the position of product
Set error etc., dial gauge is general mating with dial gauge folder and strong magnet, and percentage table folder can be with any direction activity and can be with
Dial gauge is clamped, facilitates and dial gauge indicator is adjusted to any position.
Track shock absorber structure complex parts are numerous, wherein have a component high to symmetry requirement, this damper portion
Part right part is the hanging ring arranged vertically, and hanging ring is round tube channel type structure up and down, and damper member left part is horizontal cloth
The cylindrical type pedestal set, chassis left side face are horizontal plane, and base right side face and hanging ring weld, this component will carry out symmetry survey
Amount, could use after reaching standard.
This component needs to measure the symmetry of hanging ring Yu cylindrical type pedestal, conventional symmetrical degree control measurement side in welding process
Method " V " type seat and height iron measure, and not only speed is slow, but also inaccuracy, high scrappage are caused, for this purpose, people are always
Finding the method solved.
Summary of the invention
The present invention provides a kind of rail dampener symmetry checking device, can not only rapid survey workpiece symmetry and
Easy to operate, precision is high.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme:
A kind of rail dampener symmetry checking device, the bottom plate including being arranged horizontally in ground, plate top surface front side, rear side are each
Linear guide equipped with horizontal cross arrangement, two linear guide right ends are fixed with the block to slide plate limit, and two straight
Line guide upper is equipped with horizontal slide plate, and skateboard bottom is fixedly connected with two linear guides simultaneously, and slide plate passes through two straight lines
Guide rail side-to-side movement, is equipped with vertical elbow holder on front side of slide plate top surface, and elbow holder top surface is fixed with elbow folder, elbow folder be longitudinally arranged and
Backward, elbow clamps and is fixed with briquetting at head pressure head, and briquetting is horizontal plate structure, determines on rear side of slide plate top surface equipped with vertical
Position seat, positioning seat are the big cylindrical structure of the small lower diameter of upper diameter, and positioning seat diameter change position is in step structure, fixed
Damper member is installed, damper member right part is the hanging ring arranged vertically, and hanging ring is round tube up and down on the seat of position
Channel type structure, the cylindrical type pedestal that damper member left part is arranged horizontally, chassis left side face be horizontal plane, base right side face with
Hanging ring welding, hanging ring bottom surface is in contact with positioning seat step structure；Bottom plate left part is equipped with vertical fixed plate, is provided in fixed plate
The square hole of fixed plate is extended transversely through, two vertical table bars are equipped on the left of fixed plate, fixed plate front side, rear side are respectively provided with one and erect
Straight table bar is designed with dial gauge table folder on every table bar, dial gauge, chassis left side face and fixation is equipped in dial gauge table folder
Plate right side is in contact, and one of dial gauge indicator contacts the upper quadrant point in chassis outer side face on two table bars on the left of fixed plate
And indicator is allowed to shrink certain distance, the square hole that another dial gauge indicator passes through in fixed plate on two table bars on the left of fixed plate connects
It touches down quadrantal points and indicator is allowed to shrink certain distance, the dial gauge indicator on two fixed plate front side, rear side table bars contacts respectively
The preceding quadrantal points in chassis outer side face, rear quadrantal points and indicator is allowed to shrink certain distance.
Further, briquetting length is greater than hanging ring diameter, and positioning seat upper diameter is less than hanging ring inside diameter, under positioning seat
Portion's diameter is greater than hanging ring inside diameter.
Further, elbow holder height is adapted with hanging ring apical side height.
Further, fixed plate square hole size, position are adapted with chassis left side face position, size, and guide rail left end is super
Fixed plate left side certain distance out.
Further, the fixed dial gauge of percentage table folder one end fixation table bar other end, percentage table folder can be tightened, be unclamped,
Percentage table folder passes through the adjustable direction of percentage table folder and position by the adjustable direction of table bar and height, dial gauge.
Further, the upper quadrant point in chassis outer side face is measured, the absolute value of the difference of the dial gauge degree of lower quadrant point is
The vertical symmetry of pedestal, the preceding quadrantal points in measurement chassis outer side face, the absolute value of the difference of rear intercardinal dial gauge degree are
The symmetry of pedestal longitudinal direction.
Compared with the existing technology, the invention has the benefit that
In the present invention, the bottom plate including being arranged horizontally in ground, plate top surface front side, rear side are respectively provided with a horizontal cross arrangement
Linear guide, two linear guide tops are equipped with horizontal slide plate, are equipped with vertical elbow holder, elbow holder on front side of slide plate top surface
Top surface is fixed with elbow folder, and vertical positioning seat is equipped on rear side of slide plate top surface, is equipped with damper member, bottom plate left part on positioning seat
Equipped with vertical fixed plate, it is provided with the square hole for extending transversely through fixed plate in fixed plate, is equipped with two vertical tables on the left of fixed plate
Bar, fixed plate front side, rear side are respectively provided with a vertical table bar, and dial gauge table folder is designed on every table bar, and positioning seat is upper
The big cylindrical structure of the small lower diameter of portion's diameter, positioning seat diameter change position are in step structure, hanging ring bottom surface and positioning seat
Step structure is in contact, and damper member can be fixed on rapidly designated position by setting positioning seat and elbow folder, easy to operate,
By the way that linear guide is arranged, damper member is allowed to move horizontally guarantee straightness, during allowing damper member to move horizontally not
The rotation and displacement that horizontal direction can occur allow pedestal to be easier to be bonded with fixed plate, guarantee accuracy when dial gauge measurement,
High and easy to operate using dial gauge measurement symmetry numerical precision, difference is to obtain the position degree of damper and right
Title degree measures the upper quadrant point in chassis outer side face, the absolute value of the difference of the dial gauge degree of lower quadrant point is vertical pair of pedestal
The absolute value of the difference of title degree, the preceding quadrantal points, rear intercardinal dial gauge degree that measure chassis outer side face is pair of pedestal longitudinal direction
Title degree.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the top view of Fig. 1.
In figure, 1. dial gauges, 2. table bars, 3. fixed plates, 4. dampers, 5. briquettings, 6. linear guides, 7. slide plates, 8. gears
Block, 9. bottom plates, 10. hanging rings, 11. elbows folder, 12. elbow holders, 13. positioning seats, 14. pedestals.
Specific embodiment
Embodiment: as shown in Figure 1 and Figure 2, the bottom plate 9 including being arranged horizontally in ground, 9 top surface of bottom plate front side, rear side are respectively set
Have a horizontal cross arrange linear guide 6, two 6 right ends of linear guide be fixed with to slide plate 7 limit block 8, two
6 top of linear guide is equipped with horizontal slide plate 7, and 7 bottom surface of slide plate is fixedly connected with two linear guides 6 simultaneously, and slide plate 7 passes through two
6 side-to-side movement of linear guide is equipped with vertical elbow holder 12 on front side of 7 top surface of slide plate, and 12 top surface of elbow holder is fixed with elbow folder 11,
Elbow folder 11 be longitudinally arranged and pressure head backward, elbow presss from both sides and is fixed with briquetting 5 at 11 pressure heads, and briquetting 5 is horizontal plate structure, slide plate
Vertical positioning seat 13 is equipped on rear side of 7 top surfaces, positioning seat 13 is the big cylindrical structure of the small lower diameter of upper diameter, positioning seat
13 diameter change positions are in step structure, and 4 component of damper is equipped on positioning seat 13, and 4 component right part of damper is vertical cloth
The hanging ring 10 set, hanging ring 10 are round tube channel type structure up and down, the cylindrical type that 4 component left part of damper is arranged horizontally
Pedestal 14,14 left side of pedestal are horizontal plane, and 14 right side of pedestal and hanging ring 10 weld, 10 bottom surface of hanging ring and 13 step of positioning seat
Structure is in contact；9 left part of bottom plate is equipped with vertical fixed plate 3, is provided with the square hole for extending transversely through fixed plate 3 in fixed plate 3, fixed
It is equipped with two vertical table bars 2 on the left of plate 3, the front side of fixed plate 3, rear side are respectively provided with a vertical table bar 2, on every table bar 2
It is designed with 1 table folder of dial gauge, dial gauge 1 is installed in 1 table folder of dial gauge, 14 left side of pedestal connects with 3 right side of fixed plate
Touching the upper quadrant point of one of 1 indicator of dial gauge contact, 14 lateral surface of pedestal and allows table on the two table bars 2 in the left side of fixed plate 3
Needle shrinks certain distance, another 1 indicator of dial gauge passes through the square hole contact in fixed plate 3 on the 3 two table bars 2 in left side of fixed plate
Lower quadrant point and indicator is allowed to shrink certain distance, 1 indicator of dial gauge on two front side of fixed plate 3, rear side table bars 2 contacts respectively
The preceding quadrantal points of 14 lateral surface of pedestal, rear quadrantal points and indicator is allowed to shrink certain distance.
5 length of briquetting is greater than 10 diameter of hanging ring, and 13 upper diameter of positioning seat is less than 10 inside diameter of hanging ring, under positioning seat 13
Portion's diameter is greater than 10 inside diameter of hanging ring, and 12 height of elbow holder is adapted with 10 apical side height of hanging ring, 3 square hole size of fixed plate,
Position is adapted with 14 left side position of pedestal, size, and guide rail left end exceeds 3 left side certain distance of fixed plate, dial gauge 1
The fixed dial gauge 1 of 2 other end of one end fixation table bar is pressed from both sides, the folder of dial gauge 1 can be tightened, be unclamped, and the folder of dial gauge 1 can by table bar 2
With adjustment direction and height, dial gauge 1 presss from both sides adjustable direction and position by dial gauge 1, measures the upper of 14 lateral surface of pedestal
Quadrantal points, lower quadrant point the absolute value of the difference of 1 degree of dial gauge be the vertical symmetry of pedestal 14, measure 14 lateral surface of pedestal
Preceding quadrantal points, rear intercardinal 1 degree of dial gauge absolute value of the difference be the longitudinal symmetry of pedestal 14.
The course of work: elbow folder 11 is unclamped, crush block 5 moves upwards, slide plate 7 is pushed to the right, until slide plate 7 and block
4 component of damper is placed on 13 top of positioning seat, 10 bottom surface of hanging ring and 13 step of positioning seat by 8 contacts, 7 stop motion of slide plate
Structure is in contact, and 1 indicator of dial gauge is all passed through dial gauge 1 presss from both sides and be adjusted to the intercardinal corresponding position of pedestal 14 and by percentage
Table 1 is clamping fixed, and slide plate 7 is pushed to the left, until 14 left side of pedestal and 3 right side face contact of fixed plate, continues to press on slide unit and allows
14 left side of pedestal is bonded completely with 3 right side of fixed plate, and by 11 closure of elbow folder, 5 bottom surface of briquetting contacts simultaneously with 10 top surface of hanging ring
Hanging ring 10 is tightly pressed against on positioning seat 13,14 lateral surface of pedestal and is located at 14 intercardinal four dial gauges of pedestal at this time
1 needle is in contact and indicator is allowed to shrink certain distance, corresponding readings occurs on four 1 disks of dial gauge, by calculating four dial gauges 1
Corresponding readings on disk can measure the symmetry of hanging ring 10 Yu cylindrical type pedestal 14, measure the upper quadrant of 14 lateral surface of pedestal
Point, lower quadrant point the absolute value of the difference of 1 degree of dial gauge be the vertical symmetry of pedestal 14, before measuring 14 lateral surface of pedestal
Quadrantal points, rear intercardinal 1 degree of dial gauge absolute value of the difference be the longitudinal symmetry of pedestal 14.
Claims (6)
1. a kind of rail dampener symmetry checking device, it is characterised in that: the bottom plate (9) including being arranged horizontally in ground, bottom
Plate (9) top surface front side, rear side are respectively provided with the linear guide (6) of horizontal cross arrangement, and two linear guide (6) right ends are fixed
There is the block (8) to slide plate (7) limit, two linear guide (6) tops are equipped with horizontal slide plate (7), and slide plate (7) bottom surface is simultaneously
It is fixedly connected with two linear guides (6), slide plate (7) passes through two linear guide (6) side-to-side movements, slide plate (7) top surface front side
Equipped with vertical elbow holder (12), elbow holder (12) top surface be fixed with elbow folder (11), elbow folder (11) be longitudinally arranged and pressure head backward,
It is fixed with briquetting (5) at elbow folder (11) pressure head, briquetting (5) is horizontal plate structure, and it is vertical to be equipped on rear side of slide plate (7) top surface
Positioning seat (13), positioning seat (13) is the big cylindrical structure of the small lower diameter of upper diameter, positioning seat (13) diameter change
Position is in step structure, is equipped with damper (4) component on positioning seat (13), damper (4) component right part is arranged vertically
Hanging ring (10), hanging ring (10) are round tube channel type structure up and down, the cylinder that damper (4) component left part is arranged horizontally
Type pedestal (14), pedestal (14) left side are horizontal plane, and pedestal (14) right side and hanging ring (10) are welded, hanging ring (10) bottom surface with
Positioning seat (13) step structure is in contact；Bottom plate (9) left part is equipped with vertical fixed plate (3), is provided in fixed plate (3) and laterally passes through
The square hole of fixed board (3) is fastened, two vertical table bars (2) are equipped on the left of fixed plate (3), fixed plate (3) front side, rear side are respectively provided with
A piece vertical table bar (2) is designed with dial gauge (1) table folder on every table bar (2), is equipped with percentage in dial gauge (1) table folder
Table (1), pedestal (14) left side are in contact with fixed plate (3) right side, on the left of fixed plate (3) wherein one on two table bars (2)
A dial gauge (1) indicator contacts the upper quadrant point of pedestal (14) lateral surface and indicator is allowed to shrink certain distance, fixed plate (3) left side
Another dial gauge (1) indicator passes through the square hole contact lower quadrant point on fixed plate (3) and indicator is allowed to shrink on two table bars (2)
Certain distance, dial gauge (1) indicator on front side of fixed plate (3), on two table bars (2) of rear side contact pedestal (14) lateral surface respectively
Preceding quadrantal points, rear quadrantal points and allow indicator shrink certain distance.
2. a kind of rail dampener symmetry checking device according to claim 1, it is characterised in that: briquetting (5) length
Greater than hanging ring (10) diameter, positioning seat (13) upper diameter is less than hanging ring (10) inside diameter, and positioning seat (13) lower diameter is big
In hanging ring (10) inside diameter.
3. a kind of rail dampener symmetry checking device according to claim 1, it is characterised in that: elbow holder (12) is high
Degree is adapted with hanging ring (10) apical side height.
4. a kind of rail dampener symmetry checking device according to claim 1, it is characterised in that: fixed plate (3) side
Pore size, position are adapted with pedestal (14) left side position, size, and guide rail left end is certain beyond fixed plate (3) left side
Distance.
5. a kind of rail dampener symmetry checking device according to claim 1, it is characterised in that: dial gauge (1) folder
One end fixation table bar (2) other end is fixed dial gauge (1), and dial gauge (1) folder can be tightened, be unclamped, and dial gauge (1) folder passes through table
Bar (2) adjustable direction and height, dial gauge (1) press from both sides adjustable direction and position by dial gauge (1).
6. a kind of rail dampener symmetry checking device according to claim 1, it is characterised in that: measurement pedestal (14)
The upper quadrant point of lateral surface, the absolute value of the difference of dial gauge (1) degree of lower quadrant point are pedestal (14) vertical symmetry, are surveyed
The absolute value of the difference of the preceding quadrantal points, rear intercardinal dial gauge (1) degree of measuring pedestal (14) lateral surface is that pedestal (14) are longitudinal
Symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910795852.7A CN110345851A (en) | 2019-08-27 | 2019-08-27 | A kind of rail dampener symmetry checking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910795852.7A CN110345851A (en) | 2019-08-27 | 2019-08-27 | A kind of rail dampener symmetry checking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110345851A true CN110345851A (en) | 2019-10-18 |
Family
ID=68181277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910795852.7A Pending CN110345851A (en) | 2019-08-27 | 2019-08-27 | A kind of rail dampener symmetry checking device |
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| Country | Link |
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| CN (1) | CN110345851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111571132A (en) * | 2020-05-15 | 2020-08-25 | 中国航发哈尔滨轴承有限公司 | Thin-wall bearing outer ring turning method and outer ring end surface groove symmetry measuring method of thin-wall bearing |
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|---|---|---|---|---|
| CN201858953U (en) * | 2010-10-21 | 2011-06-08 | 北京现代汽车有限公司 | Vertex angle detector of cutter |
| CN201909596U (en) * | 2010-10-29 | 2011-07-27 | 浙江双环传动机械股份有限公司 | Checking fixture for degree of symmetry |
| CN103668745A (en) * | 2013-12-04 | 2014-03-26 | 宁波慈星股份有限公司 | Parallelism detecting device of flat knitting machine sky rod |
| CN203908473U (en) * | 2014-05-30 | 2014-10-29 | 福州钜立机动车配件有限公司 | Comprehensive gauge of parallel degree and center distance of large and small holes of connecting rod |
| CN105698658A (en) * | 2016-04-11 | 2016-06-22 | 金华市新华齿轮有限公司 | Symmetry degree detecting device |
| CN107806802A (en) * | 2017-11-30 | 2018-03-16 | 蚌埠凯盛工程技术有限公司 | A kind of annealing kiln bearing block device for fast detecting and detection method |
| CN207180550U (en) * | 2017-08-29 | 2018-04-03 | 平湖市宇达精密机械有限公司 | For detecting height and the cubing of thickness after transformer welds |
| CN210293089U (en) * | 2019-08-27 | 2020-04-10 | 南阳威奥斯图车辆减振器有限公司 | Track shock absorber symmetry verifying attachment |
-
2019
- 2019-08-27 CN CN201910795852.7A patent/CN110345851A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201858953U (en) * | 2010-10-21 | 2011-06-08 | 北京现代汽车有限公司 | Vertex angle detector of cutter |
| CN201909596U (en) * | 2010-10-29 | 2011-07-27 | 浙江双环传动机械股份有限公司 | Checking fixture for degree of symmetry |
| CN103668745A (en) * | 2013-12-04 | 2014-03-26 | 宁波慈星股份有限公司 | Parallelism detecting device of flat knitting machine sky rod |
| CN203908473U (en) * | 2014-05-30 | 2014-10-29 | 福州钜立机动车配件有限公司 | Comprehensive gauge of parallel degree and center distance of large and small holes of connecting rod |
| CN105698658A (en) * | 2016-04-11 | 2016-06-22 | 金华市新华齿轮有限公司 | Symmetry degree detecting device |
| CN207180550U (en) * | 2017-08-29 | 2018-04-03 | 平湖市宇达精密机械有限公司 | For detecting height and the cubing of thickness after transformer welds |
| CN107806802A (en) * | 2017-11-30 | 2018-03-16 | 蚌埠凯盛工程技术有限公司 | A kind of annealing kiln bearing block device for fast detecting and detection method |
| CN210293089U (en) * | 2019-08-27 | 2020-04-10 | 南阳威奥斯图车辆减振器有限公司 | Track shock absorber symmetry verifying attachment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111571132A (en) * | 2020-05-15 | 2020-08-25 | 中国航发哈尔滨轴承有限公司 | Thin-wall bearing outer ring turning method and outer ring end surface groove symmetry measuring method of thin-wall bearing |
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Inventor after: Zhang Derui Inventor after: Huang Yiding Inventor after: Zhao Guochao Inventor after: Fan Xiaoliang Inventor after: Wang Bing Inventor after: Xing Jianguo Inventor after: Zhao Zeng Inventor after: Cheng Zhoujian Inventor after: Wang Xubin Inventor before: Huang Yiding Inventor before: Zhao Guochao Inventor before: Fan Xiaoliang Inventor before: Wang Bing Inventor before: Zhang Derui Inventor before: Xing Jianguo Inventor before: Zhao Zeng Inventor before: Cheng Zhoujian Inventor before: Wang Xubin |