CN114777706B - High-precision measuring device for rotation precision of double-row cylindrical roller bearing - Google Patents
High-precision measuring device for rotation precision of double-row cylindrical roller bearing Download PDFInfo
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- CN114777706B CN114777706B CN202210595969.2A CN202210595969A CN114777706B CN 114777706 B CN114777706 B CN 114777706B CN 202210595969 A CN202210595969 A CN 202210595969A CN 114777706 B CN114777706 B CN 114777706B
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 39
- 238000005259 measurement Methods 0.000 claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 6
- 239000011324 bead Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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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
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A high-precision measuring device for the rotation precision of a double-row cylindrical roller bearing relates to the technical field of bearing measurement and is used for solving the problem of low measurement precision when a manual mode is used for detecting the radial runout of the cylindrical roller bearing. The invention comprises a mechanical rack, a workbench, a driving component and a measuring component; the driving assembly comprises an inner ring driving unit and an outer ring driving unit which are positioned on the workbench, and the inner ring driving unit is used for installing and driving the bearing inner ring to rotate; the outer ring driving unit comprises a transverse driving mechanism and an outer ring rotation driving mechanism, and the transverse driving mechanism drives the movable substrate to transversely slide on the workbench and applies radial load to the bearing outer ring; the outer ring rotation driving mechanism drives the bearing outer ring to rotate through a friction wheel; the movable substrate is provided with a displacement sensor, and a measuring head of the displacement sensor acts on the outer ring of the bearing. When the inner ring and the outer ring of the bearing rotate, the measuring electric box amplifies the detection data of the displacement sensor and then uploads the amplified detection data to the computer. The invention can realize the high-efficiency and high-precision detection of the radial runout of the cylindrical roller bearing.
Description
Technical Field
The invention relates to the technical field of bearing measurement, in particular to a high-precision measuring device for the rotation precision of a double-row cylindrical roller bearing.
Background
The rotation precision of the bearing comprises the measurement of radial runout and axial runout of the inner ring and the outer ring of the bearing, and is an important parameter for measuring the quality of the finished product precision bearing. According to the requirements of the GB307.2-2005 principle and method for measuring and checking rolling bearings and 14 principle for measuring radial runout, the measuring method suitable for measuring the cylindrical roller bearings is measuring the radial runout of the inner ring of the 14.2 set of bearings (shown in figure 1) and the radial runout of the outer ring of the 14.4 set of bearings (shown in figure 2).
Currently, a rotational precision measuring instrument for a radial ball bearing can perform high-precision measurement through a precise shafting and a sensor. But the loading direction is axial loading during detection, and the measurement parameters comprise radial runout and axial runout indexes of the inner ring and radial runout and axial runout indexes of the outer ring. The outer ring or the inner ring of the cylindrical roller bearing is separable and cannot bear axial load, so that the rotation precision of the cylindrical roller bearing cannot be measured by adopting a measurement mode of the rotation precision of the radial ball bearing.
In the bearing industry, a manufacturer of the cylindrical roller bearing generally adopts a mechanical rack to measure the rotation precision in a manual mode, and has large subjective error and low measurement precision. The industry needs a device for measuring the rotational accuracy of cylindrical roller bearings, particularly double-row cylindrical roller bearings, with high accuracy.
Disclosure of Invention
The invention aims to provide a high-precision measuring device for the rotation precision of a double-row cylindrical roller bearing, which is used for solving the problem of low measurement precision when the radial runout of the cylindrical roller bearing is detected manually.
The technical scheme adopted for solving the technical problems is as follows: the high-precision measuring device for the rotation precision of the double-row cylindrical roller bearing comprises a mechanical rack, wherein a workbench is arranged at the top of the mechanical rack, a driving assembly and a measuring assembly are arranged on the workbench, and the driving assembly comprises an inner ring driving unit and an outer ring driving unit which are arranged on the workbench; the outer ring driving unit comprises a transverse driving mechanism and an outer ring rotation driving mechanism, and the transverse driving mechanism drives the outer ring rotation driving mechanism to transversely slide on the workbench; the outer ring rotary driving mechanism comprises an outer ring driving motor positioned on the transverse driving mechanism, the output end of the outer ring driving motor is provided with a driving friction wheel, and when the driving friction wheel is in contact extrusion with the outer wall of the outer ring of the bearing to be detected, radial load is applied to the bearing to be detected, and the outer ring of the bearing to be detected is driven to rotate.
Further, the measuring assembly comprises a displacement sensor and a sensor adjusting frame, the displacement sensor is arranged on the movable base plate through the sensor adjusting frame, and when the transverse driving mechanism drives the movable base plate to transversely slide on the workbench, a measuring head of the displacement sensor contacts the center of the outer wall of the outer ring of the bearing to be measured; the displacement sensor is in signal connection with a measurement electric box positioned on the mechanical rack, and the measurement electric box amplifies detection data of the displacement sensor and then uploads the amplified detection data to the computer.
Further, a high-precision dense bead shafting is arranged between the inner ring driving unit and the inner ring mandrel.
Further, the transverse driving mechanism comprises a movable base plate arranged at the top of the workbench in a sliding manner and a loading air cylinder arranged at the top of the workbench, and a piston rod of the loading air cylinder is fixedly connected with the movable base plate.
Further, the top of the workbench is provided with a guide rail, and the movable base plate is connected with the guide rail in a sliding manner.
Further, the movable base plate is provided with an auxiliary wheel which is concentrically arranged with the driving friction wheel, and the driving friction wheel and the auxiliary wheel are simultaneously contacted with the outer wall of the outer ring of the bearing to be tested; or/and the driving friction wheel and the auxiliary wheel are respectively arranged at two sides of the displacement sensor.
Further, the displacement sensor carries out rough adjustment and fine adjustment on the sensor indication value through the sensor adjusting frame.
Further, the sensor adjusting frame is provided with a height adjusting structure, and the height adjusting structure is used for adjusting the height position of the displacement sensor on the sensor adjusting frame so as to adapt to the measurement requirements of bearings with different diameters; or/and (or)
The sensor adjusting frame is provided with a longitudinal adjusting structure, and the longitudinal adjusting structure is used for adjusting the longitudinal position of the displacement sensor on the sensor adjusting frame so as to adapt to bearing measurement requirements of different widths.
Further, the height adjusting structure comprises a stand column positioned on the sensor adjusting frame, the displacement sensor is fixed on the sensor mounting plate, the sensor mounting plate longitudinally slides along the stand column, and a jackscrew is arranged between the stand column and the sensor mounting plate.
Further, the longitudinal adjustment structure comprises a jackscrew positioned between the movable base plate and a sensor adjustment frame, and the sensor adjustment frame is connected with the movable base plate in a sliding way along the longitudinal direction.
The beneficial effects of the invention are as follows: the high-precision measuring device for the rotation precision of the double-row cylindrical roller bearing provided by the invention has the following advantages:
(1) When the rotation precision of the cylindrical roller bearing is measured, the radial load is applied to the outer ring of the cylindrical roller bearing, so that the outer ring and the inner ring of the cylindrical roller bearing can be kept relatively fixed along the axial direction;
(2) The displacement sensor for detecting the radial runout of the outer ring or the inner ring is contacted with the middle part of the bearing to be detected, so that the measurement accuracy can be ensured;
(3) The friction wheel is driven by the transverse driving mechanism to contact the outer ring of the bearing, so that radial load can be provided for the bearing. The radial load of the bearing to be measured can be changed by changing the air pressure of the air cylinder;
(4) During measurement, the conversion of the radial runout measurement of the inner ring and the outer ring can be realized rapidly. The inner ring of the bearing is driven to rotate, and the outer ring driving motor is locked, so that the radial runout of the inner ring of the bearing can be measured; the inner ring driving motor is locked, the outer ring driving motor drives the bearing outer ring to rotate through the friction wheel, and the radial runout of the bearing outer ring can be measured;
(5) According to the invention, the rotation driving and radial runout detection are carried out on the detected bearing through automatic equipment, so that errors caused by manual operation can be avoided, and the measurement efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a method for measuring radial runout of an inner ring of a complete set of bearings in GB 307.2-2005;
FIG. 2 is a schematic diagram of a method for measuring radial runout of an outer ring of a complete set of bearings in GB 307.2-2005;
FIG. 3 is a cross-sectional view of a double row cylindrical roller bearing as a measurement object of the present invention;
FIG. 4 is a front view of the present invention;
FIG. 5 is a top view of the measurement assembly;
in the figure: the device comprises a measuring and driving assembly 1, a workbench 2, a mechanical rack 3, a measuring electric box 4, a computer 5, an inner ring driving motor 6, a high-precision dense bead shafting 7, an inner ring mandrel 8, a measured bearing 9, an auxiliary wheel 10, an outer ring driving motor 11, a driving friction wheel 12, a displacement sensor 13, a sensor adjusting frame 14, a moving substrate 15, a guide rail 16, a loading cylinder 17, an outer ring 18, an inner ring 19, a taper mandrel 20 and a center 21.
Detailed Description
As shown in fig. 1, in GB307.2-2005, when measuring the rotational accuracy of the set bearing inner ring 19, the set bearing is mounted on the tapered mandrel 20, and the tapered mandrel 20 is mounted between the two tips 21 to ensure accurate rotation thereof. The indicator is positioned on the outer surface of the outer race 18 as close as possible to the middle of the race 18. The outer ring 18 remains stationary and ensures that its weight is borne by the rolling elements. One revolution of the tapered mandrel 20 takes an indicator reading. Radial runout Kia is the difference between the maximum and minimum readings of the indicator.
As shown in fig. 2, in GB307.2-2005, when measuring the rotational accuracy of the set bearing outer race 18, the set bearing is mounted on the tapered spindle 20, and the tapered spindle 20 is mounted between the two tips 21 to ensure accurate rotation thereof. The indicator is positioned on the outer surface of the outer race 18 as close as possible to the middle of the race 18. The inner ring 19 is kept static, the outer ring 18 rotates for one circle, the reading of the indicator is read, and the radial runout Kea of the outer ring of the complete set of bearings is the difference between the maximum reading and the minimum reading of the indicator.
As shown in FIG. 3, the object to be measured in the invention is a double-row cylindrical roller bearing, the inner ring or the outer ring of the bearing has no flange, and the relative movement of the inner ring and the outer ring along the axial direction is required to be limited in the measuring process.
As shown in fig. 4 and 5, the present invention includes a measuring and driving assembly 1, a table 2, a mechanical stage 3, a measuring electric box 4, and a computer 5, and is described in detail with reference to the accompanying drawings.
As shown in fig. 4 and 5, the high-precision measuring device for the rotation precision of the double-row cylindrical roller bearing comprises a mechanical rack 3, wherein the mechanical rack 3 is a supporting part of the whole measuring device, a workbench 2 made of granite is arranged at the top of the mechanical rack 3, and a measuring and driving assembly 1 is arranged on the workbench 2; the measuring and driving assembly 1 comprises a driving assembly and a measuring assembly; the driving assembly comprises an inner ring driving unit and an outer ring driving unit.
The inner ring driving unit in the driving assembly comprises an inner ring driving motor 6, a high-precision dense bead shafting 7 and an inner ring mandrel 8 which are positioned on the workbench 2, one end of the high-precision dense bead shafting 7 is connected with the inner ring driving motor 6, the other end of the high-precision dense bead shafting 7 is fixedly arranged with the inner ring mandrel 8, and a measured bearing 9 is fixedly locked on the inner ring mandrel 8 during measurement; the inner ring driving motor 6 drives the inner ring mandrel 8 to rotate through the high-precision dense bead shafting 7, so as to drive the bearing inner ring to rotate, and the detected bearing 9 is a double-row cylindrical roller bearing shown in fig. 3.
The outer ring driving unit in the driving assembly comprises a transverse driving mechanism and an outer ring rotation driving mechanism, wherein the transverse driving mechanism comprises a movable base plate 15, a guide rail 16 and a loading cylinder 17. The piston rod of the loading cylinder 17 is fixedly connected with the movable base plate 15. The top of the workbench 2 is provided with a guide rail 16, and the movable base plate 15 is slidably connected with the guide rail 16. The movable base plate 15 is driven to move transversely on the top of the workbench 2 by the extension and contraction of the piston rod of the loading cylinder 17, and the guide rail 16 is arranged for ensuring the movement precision of the movable base plate 15.
The outer ring rotation driving mechanism includes an outer ring driving motor 11, a driving friction wheel 12, and an auxiliary wheel 10. The outer ring driving motor 11 is positioned on the movable substrate 15, the output end of the outer ring driving motor 11 is provided with a driving friction wheel 12, and when the driving friction wheel 12 contacts and extrudes the outer ring outer wall of the detected bearing 9, a radial load is applied to the detected bearing 9, and the outer ring of the detected bearing 9 is driven to rotate. In order to ensure that the detected bearing 9 does not deflect when being driven by the driving friction wheel 12 to rotate, the movable base plate 15 is provided with an auxiliary wheel 10 which is concentrically arranged with the driving friction wheel 12, and the driving friction wheel 12 and the auxiliary wheel 10 are simultaneously contacted with the outer wall of the outer ring of the detected bearing 9; or/and the driving friction wheel 12 and the auxiliary wheel 10 are separated on both sides of the displacement sensor 13. The driving friction wheel 12 is contacted with the outer wall at one end of the detected bearing 9, the auxiliary wheel 10 is contacted with the outer wall at the other end of the detected bearing 9, so that the driving friction wheel 12 and the auxiliary wheel 10 are matched to press the whole detected bearing 9, the axial deflection of the detected bearing 9 during rotation is avoided, and the precision of the detected bearing 9 during rotation under the action of the rotation driving mechanism is ensured.
The measuring assembly comprises a displacement sensor 13 and a sensor adjusting bracket 14. The sensor adjusting frame 14 is fixed on the moving substrate 15, and the displacement sensor 13 is adjustably mounted on the sensor adjusting frame 14. Because the types of the detected bearings 9 are different, the diameters and the widths of the detected bearings are different, in order to meet the detection requirements of the detected bearings 9 with different sizes, the height position and the longitudinal position of the displacement sensor 13 are adjusted through the sensor adjusting frame 14, and for this purpose, the sensor adjusting frame 14 is provided with a height adjusting structure which is used for adjusting the height position of the displacement sensor 13 on the sensor adjusting frame 14 so as to meet the measurement requirements of the bearings with different diameters; the sensor adjusting frame 14 is provided with a longitudinal adjusting structure, and the longitudinal adjusting structure is used for adjusting the longitudinal position of the displacement sensor 13 on the sensor adjusting frame 14 so as to adapt to bearing measurement requirements of different widths. The height adjusting structure comprises a stand column positioned on the sensor adjusting frame 14, the displacement sensor is fixed on the sensor mounting plate, the sensor mounting plate is arranged on the stand column in a sliding manner along the longitudinal direction, and a jackscrew is arranged between the stand column and the sensor mounting plate; the sensor mounting plate is slid along the upright post to realize the height adjustment of the displacement sensor so as to adapt to the radial runout detection of the detected bearings with different diameters; the locking between the sensor mounting plate and the upright post is realized through the jackscrew. The longitudinal adjustment structure comprises jackscrews positioned between the movable base plate 15 and the sensor adjustment frame 14, the sensor adjustment frame 14 is connected with the movable base plate 15 in a sliding way along the longitudinal direction so as to realize the position adjustment of the displacement sensor in the longitudinal direction, and the locking and fixing between the sensor adjustment frame 14 and the movable base plate 15 are realized through the jackscrews.
When the radial runout of the inner ring of the detected bearing 9 is detected, the outer ring rotary driving mechanism is in power-off locking, at the moment, the driving friction wheel 12 of the rotary driving device is kept in contact with the outer ring of the detected bearing 9 under the action of the loading cylinder 17 so as to prevent the rotation of the outer ring 18 of the detected bearing, and meanwhile, the driving friction wheel 12 and the auxiliary wheel 10 act on the outer ring of the bearing to provide radial load for the bearing, and the radial load of the detected bearing 9 is changed by adjusting the air pressure of the cylinder 17. The inner ring driving motor 6 rotates, the inner ring 19 of the detected bearing 9 is driven to rotate through the inner ring mandrel 8, the inner ring 19 of the detected bearing 9 rotates for one circle, the displacement sensor 13 slides for one circle along the outer ring of the detected bearing 9, the radial runout value is measured, the radial runout value is transmitted to the detected electric box 4 through the displacement sensor 13, the radial runout value is amplified in the detected electric box 4, and then is uploaded to measuring software in the computer 5, and the measuring software is displayed on the computer 5, and a radial runout curve of the inner ring of the detected bearing 9 is drawn.
When radial runout detection is carried out on the outer ring of the detected bearing 9, the rotary driving mechanism is electrified to be in a working state, and the inner ring driving motor is powered off and locked. At the moment, the driving friction wheel 12 and the auxiliary wheel 10 of the rotary driving device are kept in contact with the outer ring of the bearing 9 to be tested under the action of the loading cylinder 17, so as to provide radial load for the bearing, and the radial load of the bearing 9 to be tested is changed by adjusting the air pressure of the cylinder 17. At this time, the driving friction wheel 12 of the rotation driving device and the driving friction wheel 12 of the rotation driving mechanism rotate under the action of the outer ring driving motor 11, and the outer ring 18 of the bearing 9 to be tested is driven to rotate by friction. The outer ring 18 of the detected bearing 9 rotates for one circle, the displacement sensor 13 slides along the outer ring of the detected bearing 9 for one circle, the radial runout value is measured, the radial runout value is transmitted to the detected electric box 4 by the displacement sensor 13, the radial runout value is amplified in the detected electric box 4, then is uploaded to measuring software in the computer 5, and is displayed on the computer 5, and a radial runout curve of the inner ring of the detected bearing 9 is drawn.
According to the high-precision measuring device for the rotation precision of the double-row cylindrical roller bearing, when the rotation precision of the cylindrical roller bearing is measured, radial load is applied to the outer ring of the cylindrical roller bearing, and the outer ring and the inner ring of the cylindrical roller bearing can be kept relatively fixed along the axial direction; the displacement sensor for detecting the radial runout of the outer ring or the inner ring is contacted with the middle part of the bearing to be detected, so that the measurement accuracy can be ensured; the friction wheel is driven by the transverse driving mechanism to contact the outer ring of the bearing, so that radial load can be provided for the bearing. The radial load of the bearing to be measured can be changed by changing the air pressure of the air cylinder; during measurement, the conversion of the radial runout measurement of the inner ring and the outer ring can be realized rapidly. The inner ring of the bearing is driven to rotate, and the outer ring driving motor is locked, so that the radial runout of the inner ring of the bearing can be measured; the inner ring driving motor is locked, the outer ring driving motor drives the bearing outer ring to rotate through the friction wheel, and the radial runout of the bearing outer ring can be measured; according to the invention, the rotation driving and radial runout detection are carried out on the detected bearing through automatic equipment, so that errors caused by manual operation can be avoided, and the measurement efficiency is improved.
Claims (9)
1. The high-precision measuring device for the rotation precision of the double-row cylindrical roller bearing comprises a mechanical rack, wherein a workbench is arranged at the top of the mechanical rack, a driving assembly and a measuring assembly are arranged on the workbench, and the driving assembly comprises an inner ring driving unit and an outer ring driving unit which are arranged on the workbench; the outer ring driving unit comprises a transverse driving mechanism and an outer ring rotation driving mechanism, and the transverse driving mechanism drives the outer ring rotation driving mechanism to transversely slide on the workbench; the outer ring rotary driving mechanism comprises an outer ring driving motor positioned on the transverse driving mechanism, the output end of the outer ring driving motor is provided with a driving friction wheel, and when the driving friction wheel contacts and extrudes the outer wall of the outer ring of the bearing to be tested, a radial load is applied to the bearing to be tested, and the outer ring of the bearing to be tested is driven to rotate; the measuring assembly comprises a displacement sensor and a sensor adjusting frame, the displacement sensor is arranged on the movable base plate through the sensor adjusting frame, and when the transverse driving mechanism drives the movable base plate to transversely slide on the workbench, a measuring head of the displacement sensor contacts the center of the outer wall of the outer ring of the bearing to be measured; the displacement sensor is in signal connection with a measurement electric box positioned on the mechanical rack, and the measurement electric box amplifies detection data of the displacement sensor and then uploads the amplified detection data to the computer.
2. The high-precision measuring device for the rotation precision of the double-row cylindrical roller bearing according to claim 1, wherein a high-precision dense bead shafting is arranged between the inner ring driving unit and the inner ring mandrel.
3. The high-precision measuring device for the rotation precision of the double-row cylindrical roller bearing according to claim 1, wherein the transverse driving mechanism comprises a movable base plate arranged on the top of the workbench in a sliding manner and a loading cylinder arranged on the top of the workbench, and a piston rod of the loading cylinder is fixedly connected with the movable base plate.
4. The apparatus for measuring the rotational accuracy of a double row cylindrical roller bearing according to claim 1, wherein the table top has a guide rail, and the movable base plate is slidably connected to the guide rail.
5. The high-precision measuring device for the rotation precision of the double-row cylindrical roller bearing according to claim 4, wherein the movable substrate is provided with an auxiliary wheel which is arranged concentrically with the driving friction wheel, and the driving friction wheel and the auxiliary wheel are simultaneously contacted with the outer wall of the outer ring of the measured bearing; or/and the driving friction wheel and the auxiliary wheel are respectively arranged at two sides of the displacement sensor.
6. The apparatus for measuring the rotational accuracy of a double row cylindrical roller bearing according to claim 1, wherein the displacement sensor performs coarse adjustment and fine adjustment of the sensor indication value through a sensor adjusting frame.
7. The high-precision measuring device for the rotation precision of the double-row cylindrical roller bearing according to claim 6, wherein the sensor adjusting frame is provided with a height adjusting structure, and the height adjusting structure is used for adjusting the height position of the displacement sensor on the sensor adjusting frame to adapt to the measurement requirements of bearings with different diameters; or/and (or)
The sensor adjusting frame is provided with a longitudinal adjusting structure, and the longitudinal adjusting structure is used for adjusting the longitudinal position of the displacement sensor on the sensor adjusting frame so as to adapt to bearing measurement requirements of different widths.
8. The apparatus according to claim 7, wherein the height adjusting structure comprises a column on a sensor adjusting frame, the displacement sensor is fixed to a sensor mounting plate, the sensor mounting plate slides longitudinally along the column, and a jack screw is provided between the column and the sensor mounting plate.
9. The apparatus for measuring rotational accuracy of a double row cylindrical roller bearing according to claim 7, wherein the longitudinal adjustment structure comprises a jack screw between the moving base and a sensor adjustment frame slidably connected to the moving base in a longitudinal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210595969.2A CN114777706B (en) | 2022-05-30 | 2022-05-30 | High-precision measuring device for rotation precision of double-row cylindrical roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210595969.2A CN114777706B (en) | 2022-05-30 | 2022-05-30 | High-precision measuring device for rotation precision of double-row cylindrical roller bearing |
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| Publication Number | Publication Date |
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| CN114777706A CN114777706A (en) | 2022-07-22 |
| CN114777706B true CN114777706B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210595969.2A Active CN114777706B (en) | 2022-05-30 | 2022-05-30 | High-precision measuring device for rotation precision of double-row cylindrical roller bearing |
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| CN (1) | CN114777706B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118066964B (en) * | 2024-04-19 | 2024-06-21 | 山东永翔特种轴承有限公司 | Tapered roller bearing precision measuring device |
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| CN106979755A (en) * | 2017-03-31 | 2017-07-25 | 武汉理工大学 | Auto pump bearing axial play automatic measuring instrument |
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| CN108592850A (en) * | 2018-03-21 | 2018-09-28 | 中原工学院 | A kind of spindle blade multi-section radial run-out detecting system |
| CN207991489U (en) * | 2018-02-06 | 2018-10-19 | 洛阳轴承研究所有限公司 | A kind of running accuracy measuring device of bearing |
| CN209214577U (en) * | 2019-01-22 | 2019-08-06 | 昆山奥德鲁自动化技术有限公司 | A kind of radial internal clearance detection device |
| CN210375698U (en) * | 2019-07-02 | 2020-04-21 | 浙江百润轴承有限公司 | Device for checking flexibility of bearing |
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2022
- 2022-05-30 CN CN202210595969.2A patent/CN114777706B/en active Active
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| JPH09178613A (en) * | 1995-12-22 | 1997-07-11 | Nippon Seiko Kk | Rotating-accuracy measuring device for rolling bearing |
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| CN210375698U (en) * | 2019-07-02 | 2020-04-21 | 浙江百润轴承有限公司 | Device for checking flexibility of bearing |
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| Publication number | Publication date |
|---|---|
| CN114777706A (en) | 2022-07-22 |
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