CN110702287A - Rotating friction torque measuring device and measuring method for paired bearings - Google Patents
Rotating friction torque measuring device and measuring method for paired bearings Download PDFInfo
- Publication number
- CN110702287A CN110702287A CN201910983374.2A CN201910983374A CN110702287A CN 110702287 A CN110702287 A CN 110702287A CN 201910983374 A CN201910983374 A CN 201910983374A CN 110702287 A CN110702287 A CN 110702287A
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- China
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- rotating shaft
- balance
- balance rotating
- friction torque
- bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0042—Force sensors associated with force applying means applying a torque
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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
Abstract
A rotating friction torque measuring device and a measuring method for paired bearings belong to the technical field of bearing detection and aim to solve the problem that an existing friction torque measuring instrument cannot measure friction torque of paired bearings. The invention comprises the following steps: firstly, adjusting three screws to level the bracket; mounting bearings to be measured with the same specification at two ends of the balance rotating shaft respectively, and placing each bearing in the V-shaped groove of the V-shaped plate; before the balance rotating shaft is not provided with the weight, the nut on the balance rotating shaft is adjusted to ensure that the balance rotating shaft can keep still when rotating to any position; and fourthly, rotating the balance rotating shaft to enable the two opposite screw rods to be in a vertical state, pressing the two opposite screw rods by hands, recording the rotating angle of the balance rotating shaft at the moment as 0 degree, placing the flexible wire at the position where the roll patterns are processed on the balance rotating shaft, placing two weights with different weights at two ends of the flexible wire, and spreading the hands to enable the balance rotating shaft to rotate.
Description
Technical Field
The invention relates to a friction torque measuring device, in particular to a rotating friction torque measuring device and a rotating friction torque measuring method for paired bearings.
Background
M series dynamic friction torque measuring instrument is generally used for measuring friction torque in bearing industry in China and is suitable for measuring depth
Ditch (I)
The instrument is characterized in that the axial loading, the synchronous driving and the air bearing reduce the basic friction torque, the change of the bearing friction torque value is dynamically measured by utilizing the integral torque sensor, the measured friction torque change curve can be used for analyzing the quality level of the bearing friction torque.
In another QM series starting friction torque measuring instrument, a non-contact torque generator is adopted to generate driving torque, a photoelectric system monitors and controls the starting running state of a bearing to measure the starting friction torque of the bearing, and after the measurement is finished, a computer displays and stores the measurement result.
The mature friction torque measuring instrument in China mainly aims at measuring friction torque of a single set of bearing, and cannot realize measurement on rotation torque of a ball bearing and a cylindrical roller bearing which are symmetrically used at two ends of a shaft shoulder.
Disclosure of Invention
In order to solve the above problems, the present invention provides a device and a method for measuring a rotational friction torque of a pair of bearings.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the first scheme is as follows: a rotating friction torque measuring device for paired bearings comprises a bracket, a balance rotating shaft and weights;
the balance rotating shaft is arranged on the support, four screw rods are uniformly distributed on the circumference of the balance rotating shaft, each screw rod is provided with a nut for leveling, a flexible wire is wound on the surface of the balance rotating shaft, and weights are arranged at two ends of the flexible wire respectively.
Furthermore, knurling is processed on the surface of the oil flexible wire wound on the balance rotating shaft.
Further, the bracket 1 comprises a base, two V-shaped plates and three screws
The three screws are arranged below the base, the connecting line of the three screws in the center of the same plane is triangular, the two V-shaped plates are fixed on the base in parallel, and the balance rotating shaft is arranged in the V-shaped grooves of the two V-shaped plates.
Scheme II: a measuring method of a rotating friction torque measuring device comprises the following steps:
firstly, adjusting three screws to level the bracket;
mounting bearings to be measured with the same specification at two ends of the balance rotating shaft respectively, and placing each bearing in the V-shaped groove of the V-shaped plate;
before the balance rotating shaft is not provided with the weight, the nut on the balance rotating shaft is adjusted to ensure that the balance rotating shaft can keep still when rotating to any position;
rotating the balance rotating shaft to enable the two opposite screw rods to be in a vertical state, pressing the two opposite screw rods with hands, recording the rotating angle of the balance rotating shaft as 0 degree, placing the flexible wire at the position of the balance rotating shaft with the knurling pattern, placing two weights with different weights at two ends of the flexible wire, scattering the hands to enable the balance rotating shaft to rotate, and when the rotating angle of the balance rotating shaft exceeds 45 degrees and no jumping or pause phenomenon exists in the rotating process, the rotating friction torque of the two bearings at 0 degree is qualified, otherwise, the rotating friction torque of the two bearings is unqualified; and similarly, sequentially measuring every time the weight rotates 90 degrees clockwise, replacing the two weights, and measuring the weight by rotating counterclockwise according to the method.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the balance rotating shaft is in a horizontal state through the bracket, the nut on the balance rotating shaft is adjusted to enable the balance rotating shaft to be stationary when rotating at any position, the balance rotating shaft is placed with a flexible wire, two weights with different weights are placed at two ends of the flexible wire, the weights are used for driving the balance rotating shaft to rotate, when the rotating angle of the balance rotating shaft exceeds 45 degrees and no jumping or pause phenomenon exists, the friction torque of the balance rotating shaft is qualified, and otherwise, the friction torque of the balance rotating shaft is unqualified.
The friction torque of the paired bearings in different directions is measured in a manual mode, the structure is simple, and the manufacturing cost is low.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a side view of the balance shaft.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, and the rotational friction torque measuring device for a pair of bearings of the embodiment includes a bracket 1, a balance rotating shaft 2 and a weight 3;
the balance rotating shaft 2 is arranged on the support 1, four screw rods 4 are uniformly distributed on the circumference of the balance rotating shaft 2, each screw rod 4 is provided with a nut 5 for leveling, a flexible wire is wound on the surface of the balance rotating shaft 2, and weights 3 are respectively arranged at two ends of the flexible wire.
Preferably, the flexible wire is a wire or a nylon wire.
The second embodiment is as follows: referring to fig. 1, the present embodiment will be described, in which knurling is formed on the surface of the balance shaft 2 around which the oil cord is wound.
With such an arrangement, the friction between the cord and the balance rotating shaft 2 is increased, so that the cord and the balance rotating shaft do not slide relatively.
Other components and connections are the same as in the first embodiment.
The third concrete implementation mode: the present embodiment is described with reference to fig. 1, and the bracket 1 of the present embodiment includes a base 1-1, two V-shaped plates 1-2, and three screws 1-3;
three screws 1-3 are arranged below the base 1-1, the connecting line of the three screws 1-3 in the center of the same plane is triangular, the two V-shaped plates 1-2 are fixed on the base 1-1 in parallel, and the balance rotating shaft 2 is arranged in the V-shaped grooves of the two V-shaped plates 1-2.
Other components and connection relationships are the same as those in the second embodiment.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1 and 2, and a measuring method of a rotational friction torque measuring apparatus of the present embodiment includes the steps of:
firstly, adjusting three screws 1-3 to level the bracket 1;
secondly, mounting bearings to be measured with the same specification at two ends of the balance rotating shaft 2 respectively, and placing each bearing in a V-shaped groove of the V-shaped plate 1-2;
before the balance rotating shaft 2 is not provided with the weight 3, the nut 5 on the balance rotating shaft 2 is adjusted to ensure that the balance rotating shaft 2 can keep still when rotating to any position;
fourthly, rotating the balance rotating shaft 2 to enable the two opposite screw rods 4 to be in a vertical state, pressing the two opposite screw rods with hands, marking the rotating angle of the balance rotating shaft 2 as 0 degree, placing the flexible cord at the position where the knurling patterns are processed on the balance rotating shaft 2, placing two weights with different weights at two ends of the flexible cord, scattering the hands to enable the balance rotating shaft 2 to rotate, and when the rotating angle of the balance rotating shaft 2 exceeds 45 degrees, and the phenomena of jumping and pause do not occur in the rotating process, wherein the rotating friction torque of the two bearings at 0 degree is qualified, otherwise, the rotating friction torque of the two bearings is unqualified; and similarly, sequentially measuring every time the weight rotates 90 degrees clockwise, replacing the two weights, and measuring the weight by rotating counterclockwise according to the method.
The fifth concrete implementation mode: referring to fig. 1 and fig. 2, the method for adjusting the balance shaft 2 in step three of the present embodiment is as follows: firstly roughly adjusting four nuts 5 to enable the four nuts to be equidistant from the center of the balance rotating shaft 2, then finely adjusting, keeping two opposite screw rods 4 in a vertical state, adjusting the two nuts 5 on the horizontal screw rods 4, rotating the balance rotating shaft 2 by 90 degrees when the balance is kept and the rotation is not generated, adjusting the two nuts 5 on the horizontal screw rods 4 to enable the balance to be in balance, then rotating the balance rotating shaft 2 to any position to observe whether the balance rotating shaft is in a balance state, if the balance rotating shaft 2 is not found to have a rotation phenomenon, finishing the adjustment of the balance rotating shaft 2, otherwise finely adjusting until the balance rotating shaft 2 rotates to any position and is in a static state.
Other compositions and connection relations are the same as those of the fourth embodiment.
Claims (5)
1. A rotational friction torque measuring device for paired bearings, characterized in that: the balance weight comprises a bracket (1), a balance rotating shaft (2) and a weight (3);
the balance rotating shaft (2) is arranged on the support (1), four screw rods (4) are uniformly distributed on the circumference of the balance rotating shaft (2), each screw rod (4) is provided with a leveling nut (5), a flexible wire is wound on the surface of the balance rotating shaft (2), and weights (3) are arranged at two ends of the flexible wire respectively.
2. A rotational friction torque measuring device for a paired bearings according to claim 1, characterized in that: knurling is processed on the surface of the oil flexible wire wound on the balance rotating shaft (2).
3. A rotational friction torque measuring device for a paired bearing according to claim 2, characterized in that: the support (1) comprises a base (1-1), two V-shaped plates (1-2) and three screws (1-3);
three screws (1-3) are arranged below the base (1-1), the connecting line of the three screws (1-3) in the center of the same plane is triangular, the two V-shaped plates (1-2) are fixed on the base (1-1) in parallel, and the balance rotating shaft (2) is arranged in the V-shaped grooves of the two V-shaped plates (1-2).
4. A measuring method of a rotational friction torque measuring apparatus according to claim 3, characterized in that: it comprises the following steps:
firstly, adjusting three screws (1-3) to level the bracket (1);
secondly, mounting bearings to be measured with the same specification at two ends of the balance rotating shaft (2) respectively, and placing each bearing in a V-shaped groove of the V-shaped plate (1-2);
thirdly, before the balance rotating shaft (2) is not provided with the weight (3), the nut (5) on the balance rotating shaft (2) is adjusted to ensure that the balance rotating shaft (2) can keep still when rotating to any position;
fourthly, rotating the balance rotating shaft (2) to enable the two opposite screw rods (4) to be in a vertical state, pressing the two opposite screw rods with hands to be immobile, recording the rotating angle of the balance rotating shaft (2) as 0 degree, placing the flexible cord at the position where the knurling pattern is processed on the balance rotating shaft (2), placing two weights with different weights at two ends of the flexible cord, scattering the hands to enable the balance rotating shaft (2) to rotate, and when the rotating angle of the balance rotating shaft (2) exceeds 45 degrees, and the phenomena of jumping and pause are avoided in the rotating process, wherein the rotating friction torque of the two bearings at 0 degree is qualified, otherwise, the two bearings are unqualified; and similarly, sequentially measuring every time the weight rotates 90 degrees clockwise, replacing the two weights, and measuring the weight by rotating counterclockwise according to the method.
5. The measuring method of a rotational friction torque measuring apparatus according to claim 4, characterized in that: the method for adjusting the balance rotating shaft (2) in the third step comprises the following steps: the method comprises the steps of roughly adjusting four nuts (5) roughly to enable the four nuts to be equidistant from the center of a balance rotating shaft (2), finely adjusting, keeping two opposite screw rods (4) in a vertical state, adjusting the two nuts (5) on a horizontal screw rod (4), rotating the balance rotating shaft (2) by 90 degrees when the balance is kept and the rotation is not generated, adjusting the two nuts (5) on the horizontal screw rod (4) to enable the balance to be in balance, rotating the balance rotating shaft (2) to any position to observe whether the balance rotating shaft is in a balance state, not finding that the balance rotating shaft (2) has a rotation phenomenon, finishing the adjustment of the balance rotating shaft (2), and finely adjusting until the balance rotating shaft (2) rotates to any position and is in a static state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910983374.2A CN110702287A (en) | 2019-10-16 | 2019-10-16 | Rotating friction torque measuring device and measuring method for paired bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910983374.2A CN110702287A (en) | 2019-10-16 | 2019-10-16 | Rotating friction torque measuring device and measuring method for paired bearings |
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| Publication Number | Publication Date |
|---|---|
| CN110702287A true CN110702287A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910983374.2A Withdrawn CN110702287A (en) | 2019-10-16 | 2019-10-16 | Rotating friction torque measuring device and measuring method for paired bearings |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397898A (en) * | 2020-03-26 | 2020-07-10 | 武汉理工大学 | Bearing friction resistance moment detection device |
| CN112525405A (en) * | 2020-12-24 | 2021-03-19 | 贵州华烽电器有限公司 | Rolling bearing starting torque measuring method |
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|---|---|---|---|---|
| SU666457A1 (en) * | 1975-12-03 | 1979-06-05 | Куйбышевский Филиал Всесоюзного Научно-Исследовательского Конструкторско-Технологического Института Подшипниковой Промышленности | Device for measuring friction torque of antifriction bearings |
| CN1865878A (en) * | 2006-06-22 | 2006-11-22 | 慈兴集团有限公司 | Measuring for friction torque of bearing under micro-loading at different rotation rate and measuring apparatus therefor |
| CN202403842U (en) * | 2011-12-28 | 2012-08-29 | 重庆建安仪器有限责任公司 | Force measuring device for paper feeding wheel set or paper collecting wheel set |
| CN203629729U (en) * | 2013-12-31 | 2014-06-04 | 贵州航天乌江机电设备有限责任公司 | A measurement apparatus for an antifriction bearing real static friction torque |
| CN106092398A (en) * | 2016-08-08 | 2016-11-09 | 上海大学 | A kind of high-speed micro bearing dynamic friction torque measuring instrument |
| CN208223815U (en) * | 2018-05-23 | 2018-12-11 | 芜湖牧羿自动化科技有限公司 | Detection device is used in a kind of production of automobile bearing |
| CN208999098U (en) * | 2018-10-31 | 2019-06-18 | 天津大学 | Horizontal type rolling bearing equlvalent coefficient of friction measuring device |
| CN109975021A (en) * | 2019-03-01 | 2019-07-05 | 钱潮轴承有限公司 | A kind of tapered roller bearing starting moment of friction detection device and method |
-
2019
- 2019-10-16 CN CN201910983374.2A patent/CN110702287A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU666457A1 (en) * | 1975-12-03 | 1979-06-05 | Куйбышевский Филиал Всесоюзного Научно-Исследовательского Конструкторско-Технологического Института Подшипниковой Промышленности | Device for measuring friction torque of antifriction bearings |
| CN1865878A (en) * | 2006-06-22 | 2006-11-22 | 慈兴集团有限公司 | Measuring for friction torque of bearing under micro-loading at different rotation rate and measuring apparatus therefor |
| CN202403842U (en) * | 2011-12-28 | 2012-08-29 | 重庆建安仪器有限责任公司 | Force measuring device for paper feeding wheel set or paper collecting wheel set |
| CN203629729U (en) * | 2013-12-31 | 2014-06-04 | 贵州航天乌江机电设备有限责任公司 | A measurement apparatus for an antifriction bearing real static friction torque |
| CN106092398A (en) * | 2016-08-08 | 2016-11-09 | 上海大学 | A kind of high-speed micro bearing dynamic friction torque measuring instrument |
| CN208223815U (en) * | 2018-05-23 | 2018-12-11 | 芜湖牧羿自动化科技有限公司 | Detection device is used in a kind of production of automobile bearing |
| CN208999098U (en) * | 2018-10-31 | 2019-06-18 | 天津大学 | Horizontal type rolling bearing equlvalent coefficient of friction measuring device |
| CN109975021A (en) * | 2019-03-01 | 2019-07-05 | 钱潮轴承有限公司 | A kind of tapered roller bearing starting moment of friction detection device and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397898A (en) * | 2020-03-26 | 2020-07-10 | 武汉理工大学 | Bearing friction resistance moment detection device |
| CN111397898B (en) * | 2020-03-26 | 2021-06-11 | 武汉理工大学 | Bearing friction resistance moment detection device |
| CN112525405A (en) * | 2020-12-24 | 2021-03-19 | 贵州华烽电器有限公司 | Rolling bearing starting torque measuring method |
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Application publication date: 20200117 |