CN107340091B - Bearing assembly pretightening power calculation method and pretightning force detection device - Google Patents
Bearing assembly pretightening power calculation method and pretightning force detection device Download PDFInfo
- Publication number
- CN107340091B CN107340091B CN201611077654.XA CN201611077654A CN107340091B CN 107340091 B CN107340091 B CN 107340091B CN 201611077654 A CN201611077654 A CN 201611077654A CN 107340091 B CN107340091 B CN 107340091B
- Authority
- CN
- China
- Prior art keywords
- bearing
- axial displacement
- displacement
- calculating
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Support Of The Bearing (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a kind of bearing assembly pretightening power calculation methods, calculate the axial displacement Ja of shell and output shaft at bearing block according to temperature change difference first1Turn axial displacement Ja with radial2, then the two adds up to total axial displacement；The axial displacement b of the sum of the bearing displacement variable in set temperature value a and shell is calculated again；Axial displacement b you can get it the design preload amount S that the sum of bearing displacement variable a and shell are finally subtracted using total axial displacement, can finally determine design pretightning force A according to design preload amount S.Preload amount and pretightning force required when bearing assembles can be accurately calculated using bearing assembly pretightening power calculation method provided by the invention, to prolong its service life, and whether bearing assembly pretightening power detection device provided by the invention can then detect the pretightning force after assembling in turn and be consistent with design pretightning force, so as to facilitate amendment.
Description
Technical Field
The invention relates to the technical field of bearing assembly in a gearbox, in particular to a bearing assembly pretightening force calculation method and pretightening force detection equipment.
Background
An output shaft in the gearbox is usually supported by two paired conical bearings, the conical bearings can bear larger axial force and radial force and have excellent performance, but an adjusting gasket needs to be installed to pre-tighten the two paired conical bearings to a certain extent so as to make up for a gap between the bearing and a bearing seat caused by expansion deformation of a shell and a shafting due to temperature rise, and because the shell material and the shafting material are different, the shell and the shafting material have different deformations under the same temperature difference, the shell expands more and the shafting expands less, a gap can be generated between the bearing seat and the shell, the service life attenuation of the bearing can be influenced when the bearing operates under the condition of the existence of the gap, and the service lives of a mounting shaft and a gear can also be influenced; the pre-tightening amount is increased, namely the axial interference magnitude of the bearing is ensured under the normal-temperature assembly state, so that the service life and the precision of the conical bearing can be prolonged, and the service life of the gearbox is prolonged; the design of the pre-tightening amount and the selection and determination of the adjusting shim are the problems to be solved, and currently, the design of the pre-tightening amount of the conical bearing does not have corresponding software calculation.
Disclosure of Invention
The invention provides a method for calculating the assembling pretightening force of a bearing and pretightening force detection equipment, which are used for solving the problems, accurately calculating the installing pretightening force of the bearing and prolonging the service life of the bearing.
The invention provides a bearing assembly pretightening force calculation method, which comprises the following steps:
step S1: calculating the axial displacement delta Ja of the housing and the output shaft at the bearing seat according to the temperature change difference1；
Step S2: calculating the radial displacement of the housing and the output shaft at the bearing seat according to the temperature change difference, and converting the radial displacement into an axial displacement delta Ja2；
Step S3: according to the axial displacement Delta Ja1And said axial displacement Δ Ja2ComputingTotal axial displacement Δ;
step S4: selecting a working interval of the bearings at a set temperature value according to the service life curve of the bearings, and determining the sum a of the displacement variation of the two bearings in the working interval;
step S5: determining the corresponding working pretightening force A under the set temperature value according to the sum a of the displacement variations of the two bearings1；
Step S6: according to the axial rigidity value K of the bearing seat of the shell and the working pretightening force A1Calculating the axial displacement b of the shell at a set temperature value;
step S7: and calculating a designed pretightening force S according to the total axial displacement delta, the sum a of the displacement variation and the axial displacement b, and confirming a designed pretightening force A according to the pretightening force S.
The method for calculating the bearing assembling preload as described above, preferably, after step S7, further includes:
step S8: and calculating a starting torque value T of the output shaft according to the design pretightening force A.
The bearing assembling preload calculation method as described above, wherein preferably, in step S1, the axial displacement Δ Ja is calculated according to the following formula1：
ΔJa1＝(L*C2*Δt2)–(L*C1*Δt1)；
Wherein, C2: the coefficient of expansion of the shell material;
c1: coefficient of expansion of the output shaft material;
Δt1: shell temperature variation difference;
Δt2: difference in output shaft temperature change;
l: distance of the outer races of the two bearings.
The bearing assembling pretension calculation method as described above, wherein, preferably, in step S2,
the bearing radial design interference magnitude deltas is a fixed value, and the relative displacement deltaq generated by the radial expansion of the shell and the bearing is calculated according to the following formula:
ΔQ＝(D2*C2*Δt2)–(D1*C1*Δt1)；
wherein D is1: the outer ring outer diameters of the first bearing and the second bearing;
D2: a housing bearing seat bore inner diameter;
C2: the coefficient of expansion of the shell material;
C1: coefficient of expansion of the output shaft and bearing material;
Δt1: shell temperature variation difference;
Δt2: difference in output shaft temperature change;
if the relative displacement delta Q generated by the radial expansion of the shell and the bearing is smaller than the designed bearing seat mounting radial interference delta S, the relative displacement delta Q generated by the radial expansion of the shell and the bearing is converted into the axial displacement delta Ja according to the following formula2：
ΔJa2＝(Y1/0.8*ΔQ1+Y2/0.8*ΔQ2)
Wherein,
Y1: a calculated coefficient for the first bearing;
Y2: a calculated coefficient of the second bearing;
ΔQ1: relative displacement resulting from radial expansion of the housing and the first bearing;
ΔQ2: relative displacement resulting from radial expansion of the housing and the second bearing;
when the relative displacement delta Q generated by the radial expansion of the shell and the bearing is larger than the designed bearing seat installation interference delta S, the radial designed bearing seat installation interference delta S is converted into the axial displacement delta Ja according to the following formula2：
ΔJa2＝(Y1/0.8*ΔS1)+(Y2/0.8*ΔS2)
Wherein,
Y1: a calculated coefficient for the first bearing;
Y2: a calculated coefficient for the first bearing;
ΔS1: the radial interference of the first bearing installation;
ΔS2: the radial interference of the second bearing mounting.
The bearing assembling pretension calculation method as described above, wherein, preferably, in step S3, the total axial displacement Δ is calculated according to the following formula:
Δ＝ΔJa1+ΔJa2。
in the method for calculating the bearing assembling preload as described above, preferably, in step S6, the axial stiffness value K of the bearing seat is calculated according to the following formula:
K＝1/(1/K1+1/K2)；
wherein, K1Axial stiffness of the bearing seat being a first bearing; k2Axial stiffness of the bearing seat being the second bearing;
the housing axial displacement b is calculated according to the following formula:
b＝A1/K。
in the method for calculating the bearing assembling preload as described above, preferably, in step S7, the design preload amount S is calculated according to the following formula:
S＝Δ-a-b。
the invention also provides a bearing assembly pretightening force detection device, which comprises:
an output shaft;
the bearing is sleeved on the outer ring of the output shaft;
a pressure sensor located between the housing and the bearing;
the reading equipment is connected with the pressure sensor and used for reading the pressure value of the pressure sensor at a first set temperature.
The bearing assembling pretightening force calculation method can accurately calculate the pretightening force required by bearing assembling, thereby prolonging the service life of the bearing assembling pretightening force calculation method.
Drawings
FIG. 1 is a flowchart of a method for calculating a bearing assembly preload according to an embodiment of the present invention;
FIG. 2 is a schematic view of a bearing assembly according to a method for calculating a pre-tightening force of the bearing assembly provided by the embodiment of the invention;
FIG. 3 is a bearing life curve diagram of the bearing assembly pretightening force calculation method provided by the embodiment of the invention;
fig. 4 is a schematic structural diagram of a bearing assembly pretightening force detection apparatus provided by an embodiment of the present invention.
Description of reference numerals:
10-output shaft 20-first bearing 21-second bearing 30-pressure sensor
40-reading device 50-housing
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
Fig. 1 is a flowchart of a method for calculating a bearing assembling preload according to an embodiment of the present invention, and fig. 2 is a schematic view of a bearing assembling process according to the method for calculating a bearing assembling preload according to the embodiment of the present invention, as shown in fig. 2, in the embodiment of the present invention, a bearing assembling manner to be calculated is that a first bearing 20 and a second bearing 21 are sleeved on two ends of an output shaft 10, and then a housing 50 is fixedly sleeved on the first bearing 20 and the second bearing 21.
Referring to fig. 1 to fig. 2, a method for calculating a bearing assembling preload according to an embodiment of the present invention includes:
step S1: calculating the axial displacement Δ Ja of the housing 50 and the output shaft 10 at the bearing seat according to the temperature variation difference1. In this step, the axial displacement Δ Ja may be specifically calculated according to the following formula1：
ΔJa1＝(L*C2*Δt2)–(L*C1*Δt1)； (1)
Wherein, C2: the coefficient of expansion of the shell 50 material;
C1: the coefficient of expansion of the output shaft 10 material;
Δt1: difference in temperature change of the housing 50;
Δt2: difference in temperature change of the output shaft 10;
l: distance of the outer races of the two bearings.
The difference in temperature change is preferably here more generally 20 ℃ compared to the ambient temperature.
Step S2: the radial displacement of the housing 50 and the output shaft 10 at the bearing seats is calculated from the temperature variation difference and converted into an axial displacement Δ Ja2。
The temperature change amount herein refers to generally 20 degrees with respect to the ambient temperature. Because the outer rings of the two bearings of the output shaft 10 are in interference fit with the housing 50, when the temperature changes, the radial housing 50 and the bearings also change, the housing 50 expands more, the gap gradually increases, and the interference magnitude gradually decreases; generally with reference to the radial design interference deltas between the housing 50 and the bearing,
the bearing radial design interference magnitude deltas is a fixed value, and the relative displacement deltaq generated by the radial expansion of the shell and the bearing is calculated according to the following formula:
ΔQ＝(D2*C2*Δt2)–(D1*C1*Δt1)； (2)
wherein D is1: the outer ring outer diameters of the first bearing and the second bearing;
D2: a housing bearing seat bore inner diameter;
C2: the coefficient of expansion of the shell material;
C1: coefficient of expansion of the output shaft and bearing material;
Δt1: shell temperature variation difference;
Δt2: difference in output shaft temperature change;
if the relative displacement delta Q generated by the radial expansion of the shell and the bearing is smaller than the designed bearing seat mounting radial interference delta S, the following formula is adoptedConverting the relative displacement Δ Q generated by the radial expansion of the housing and bearing into an axial displacement Δ Ja2：
ΔJa2＝(Y1/0.8*ΔQ1+Y2/0.8*ΔQ2) (3)
Wherein,
Y1: a calculated coefficient for the first bearing;
Y2: a calculated coefficient of the second bearing;
ΔQ1: relative displacement resulting from radial expansion of the housing and the first bearing;
ΔQ2: relative displacement resulting from radial expansion of the housing and the second bearing;
when the relative displacement delta Q generated by the radial expansion of the shell and the bearing is larger than the designed bearing seat installation interference delta S, the radial designed bearing seat installation interference delta S is converted into the axial displacement delta Ja according to the following formula2：
ΔJa2＝(Y1/0.8*ΔS1)+(Y2/0.8*ΔS2) (4)
Wherein,
Y1: a calculated coefficient for the first bearing;
Y2: a calculated coefficient for the first bearing;
ΔS1: the radial interference of the first bearing installation;
ΔS2: the radial interference of the second bearing mounting.
Step S3: according to the axial displacement Delta Ja1And said axial displacement Δ Ja2The total axial displacement Δ is calculated. The total axial displacement Δ may be calculated specifically according to the following formula:
Δ＝ΔJa1+ΔJa2。 (5)
step S4: and selecting a working interval of the bearing at a set temperature value according to the service life curve of the bearing, and determining the sum a of the displacement variation of the two bearings in the working interval. As shown in fig. 2, for the bearing life curve provided by the bearing supplier, the working interval of the bearing at the set temperature, preferably the working temperature (90 ℃), i.e. the gray interval shown in fig. 3, is selected, the interval is selected to be the larger value interval of the service life of the two bearing curves, the service life of the two paired bearings is higher, and then the middle value of the interval is selected as the working play of the bearing. The abscissa in fig. 3 represents the sum a of the displacement variation values of the two bearings, and the ordinate represents the service lives of the two bearings at the sum of the displacement variation values, respectively.
Step S5: determining the corresponding working pretightening force A at the set temperature according to the sum a of the displacement variations of the two bearings1. Specifically, the working pretightening force A can be determined according to a pre-calculated table1. The pre-calculated table is shown in table 1 below.
TABLE 1
As shown in Table 1, the corresponding relationship among the stiffness value, the displacement, the sum of the displacement variations and the working pre-tightening force of the two bearings is listed in the table, and the sum a of the displacement variations of the two bearings is known according to the table, so that the corresponding working pre-tightening force A can be inquired1For example: when the sum of the displacement variation of the two bearings is-9.7 um, the corresponding working pretightening force A1Is 500N.
Step S6: according to the axial rigidity value K of the bearing seat and the working pretightening force A1The axial displacement b of the housing 50 at the set temperature value is calculated. Specifically, the stiffness value K of the two bearings at the respective bearing seats can be calculated in advance (calculated by using finite element software Abqus and the like)1And K2And according to the rigidity value K of the bearing seat of the two bearings1And K2And calculating the axial rigidity value K of the bearing seat.
Further, the axial stiffness value K of the housing bearing seat may be specifically calculated according to the following formula:
K＝1/(1/K1+1/K2)； (6)
the axial displacement b is calculated according to the following formula: b is ═ A1/K。 (7)
Step S7: and calculating a design pretightening force S according to the total axial displacement delta, the sum a of the displacement variation and the axial displacement b of the shell 50 at a set temperature value, and confirming the design pretightening force A according to the pretightening force S. Specifically, the design pretension amount S can be calculated according to the following formula: the design pretension a can be calculated in advance and then obtained by looking up a table, see table 2 specifically.
TABLE 2
| Design pre-tightening force | Design amount of pretension |
| A/N | S/um |
| 125 | 16 |
| 250 | 25 |
| 375 | 41 |
| 500 | 58 |
| 625 | 68 |
| 750 | 80 |
| 875 | 95 |
| 1000 | 110 |
| 1125 | 34 |
Step S8: and calculating a starting torque value T of the output shaft 10 according to the design pretightening force A. Specifically, the starting torque value T may be calculated according to the following formula:
T＝μ*A*(D1+D2)/2； (8)
wherein, mu: coefficient of friction;
a: designing a pre-tightening force;
D1: the outer ring outer diameter of the first bearing 20;
D2: outer ring outer diameter of second bearing 21.
By using the method provided by the embodiment, the pre-tightening amount required by the bearing installation can be accurately calculated, so that the service life of the bearing is prolonged.
Fig. 4 is a bearing assembling pretension detecting apparatus provided in an embodiment of the present invention, and as shown in fig. 4, the bearing assembling pretension detecting apparatus provided in the embodiment of the present invention includes an output shaft 10, a bearing 20, and a pressure sensor 30.
The bearing 20 is sleeved on an outer ring of the output shaft 10, the pressure sensor 30 is located between the housing 50 and the first bearing 20, the reading device 40 is connected with the pressure sensor 30, and the reading device 40 is used for reading a pressure value of the pressure sensor 30 at a first set temperature (preferably 20 ℃), and comparing the pressure value with the design pretightening force A in any embodiment of the invention to determine whether the pressure value is qualified. In this embodiment, the reading device may be preferably a computer, and if the pressure value read by the reading device 40 is different from the result of the design pretightening force a, the pretightening amount S needs to be adjusted until the design pretightening force a meeting the design requirement.
Further, in another embodiment, any one of the above starting torque values T may also be verified by a device, specifically, the device for verifying the pre-tightening amount is similar, and the same components are used, but the device for verifying the pre-tightening amount is used, instead, the pressure sensor is replaced by an adjusting shim for actual assembly according to the designed pre-tightening amount, when the output shaft is pressed, oil is sprayed and lubricated at the bearing seat of the bearing, after the housing is assembled, the output shaft is rotated three times in the forward and reverse directions, so as to ensure that an oil film is formed at the bearing outer ring and the bearing seat of the housing, the torque value during starting is read, the average value is measured for multiple times, and whether the starting torque is within the designed range is compared, since the axial pre-tightening force is further measured, the friction coefficient μ in the calculation formula (8) of the starting torque is corrected according to the relationship between the pre-tightening force and the, the friction coefficient mu is related to the lubrication state, so that the friction coefficient mu needs to be corrected, after the correction is finished, the calculation result after the correction can be used as a judgment basis, the deviation between the design value and the measured value exists due to the deviation of some actual measurement, the deviation is controlled to be acceptable within 10 percent, and when the starting torque read by multiple measurements is close to the design value, the pre-tightening amount at the moment is the design pre-tightening amount.
The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.
Claims (7)
1. A method for calculating the assembling pretightening force of a bearing is characterized by comprising the following steps:
step S1: calculating the axial displacement delta Ja of the housing and the output shaft at the bearing seat according to the temperature change difference1；
Step S2: calculating the radial displacement of the housing and the output shaft at the bearing seat according to the temperature change difference, and converting the radial displacement into an axial displacement delta Ja2；
Step S3: according to the axial displacement Delta Ja1And said axial displacement Δ Ja2Calculating the total axial displacement Δ；
Step S4: selecting a working interval of the bearings at a set temperature value according to the service life curve of the bearings, and determining the sum a of the displacement variation of the two bearings in the working interval;
step S5: determining the corresponding working pretightening force A under the set temperature value according to the sum a of the displacement variations of the two bearings1；
Step S6: according to the axial rigidity value K of the bearing seat of the shell and the working pretightening force A1Calculating the axial displacement b of the shell at a set temperature value;
step S7: and calculating a designed pretightening force S according to the total axial displacement delta, the sum a of the displacement variation and the axial displacement b, and confirming a designed pretightening force A according to the pretightening force S.
2. The method for calculating the bearing assembling preload as claimed in claim 1, further comprising, after step S7:
step S8: and calculating a starting torque value T of the output shaft according to the design pretightening force A.
3. The method for calculating the bearing assembling preload as claimed in claim 1, wherein in step S1, the axial displacement Δ Ja is calculated according to the following formula1：
ΔJa1＝(L*C2*Δt2)–(L*C1*Δt1)；
Wherein, C2: the coefficient of expansion of the shell material;
c1: coefficient of expansion of the output shaft material;
Δt1: shell temperature variation difference;
Δt2: difference in output shaft temperature change;
l: distance of the outer races of the two bearings.
4. The method for calculating the bearing assembling preload as claimed in claim 1, wherein in step S2, the bearing radial design interference Δ S is a fixed value, and the relative displacement Δ Q caused by the radial expansion of the housing and the bearing is calculated according to the following formula:
ΔQ＝(D2*C2*Δt2)–(D1*C1*Δt1)；
wherein D is1: the outer ring outer diameters of the first bearing and the second bearing;
D2: a housing bearing seat bore inner diameter;
C2: the coefficient of expansion of the shell material;
C1: coefficient of expansion of the output shaft and bearing material;
Δt1: shell temperature variation difference;
Δt2: difference in output shaft temperature change;
if the relative displacement delta Q generated by the radial expansion of the shell and the bearing is smaller than the designed bearing seat mounting radial interference delta S, the relative displacement delta Q generated by the radial expansion of the shell and the bearing is converted into the axial displacement delta Ja according to the following formula2：
ΔJa2＝(Y1/0.8*ΔQ1+Y2/0.8*ΔQ2)
Wherein,
Y1: a calculated coefficient for the first bearing;
Y2: a calculated coefficient of the second bearing;
ΔQ1: relative displacement resulting from radial expansion of the housing and the first bearing;
ΔQ2: relative displacement resulting from radial expansion of the housing and the second bearing;
when the relative displacement delta Q generated by the radial expansion of the shell and the bearing is larger than the designed bearing seat installation interference delta S, the radial designed bearing seat installation interference delta S is converted into the axial displacement delta Ja according to the following formula2：
ΔJa2＝(Y1/0.8*ΔS1)+(Y2/0.8*ΔS2)
Wherein,
Y1: a calculated coefficient for the first bearing;
Y2: a calculated coefficient for the first bearing;
ΔS1: the radial interference of the first bearing installation;
ΔS2: the radial interference of the second bearing mounting.
5. The method for calculating the bearing assembling preload as claimed in claim 1, wherein in step S3, the total axial displacement Δ is calculated according to the following formula:
Δ＝ΔJa1+ΔJa2。
6. the method for calculating the bearing assembling preload as claimed in claim 5, wherein in step S6, the axial stiffness value K of the bearing seat is calculated according to the following formula:
K＝1/(1/K1+1/K2)；
wherein, K1Axial stiffness of the bearing seat being a first bearing; k2Axial stiffness of the bearing seat being the second bearing;
the housing axial displacement b is calculated according to the following formula:
b＝A1/K。
7. the method for calculating the bearing assembling preload as claimed in any one of claims 1 to 6, wherein in step S7, the design preload amount S is calculated according to the following formula:
S＝Δ-a-b。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611077654.XA CN107340091B (en) | 2016-11-30 | 2016-11-30 | Bearing assembly pretightening power calculation method and pretightning force detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611077654.XA CN107340091B (en) | 2016-11-30 | 2016-11-30 | Bearing assembly pretightening power calculation method and pretightning force detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107340091A CN107340091A (en) | 2017-11-10 |
| CN107340091B true CN107340091B (en) | 2019-06-04 |
Family
ID=60222856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611077654.XA Active CN107340091B (en) | 2016-11-30 | 2016-11-30 | Bearing assembly pretightening power calculation method and pretightning force detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107340091B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109614764B (en) * | 2019-01-31 | 2023-06-09 | 青岛高测科技股份有限公司 | Method for quantitatively determining axial pretightening force of ultra-precise angular contact ball bearing |
| JP7049297B2 (en) * | 2019-09-26 | 2022-04-06 | Ntn株式会社 | Preload inspection method for wheel bearing devices |
| CN110567626B (en) * | 2019-09-30 | 2021-05-11 | 华中光电技术研究所（中国船舶重工集团有限公司第七一七研究所） | Indirect bearing pretightening force measuring method and system |
| CN113124810B (en) * | 2019-12-31 | 2023-03-24 | 新疆金风科技股份有限公司 | Method and system for measuring matching quality of shafting bearing |
| CN113819142B (en) * | 2020-06-18 | 2024-04-12 | 金风科技股份有限公司 | Shafting structure and installation method thereof |
| CN111767617B (en) * | 2020-06-28 | 2022-10-25 | 上海羿弓精密科技有限公司 | RV reducer main bearing preload selection method and selection system and storage medium |
| CN112033255A (en) * | 2020-08-14 | 2020-12-04 | 常州机电职业技术学院 | A Calculation Method for Preload of Double Row Short Cylindrical Roller Bearings |
| US12352648B2 (en) * | 2020-08-19 | 2025-07-08 | Ntn Corporation | Preload inspection method for bearing device for vehicle wheel |
| CN115438432A (en) * | 2021-06-03 | 2022-12-06 | 上海汽车集团股份有限公司 | Calculation method for bearing assembling pre-tightening amount |
| CN113530944B (en) * | 2021-07-13 | 2022-08-09 | 哈电风能有限公司 | Bolt pre-tightening method and system |
| CN114705326B (en) * | 2022-04-22 | 2024-01-30 | 中国工程物理研究院总体工程研究所 | Pretightening force adjusting method of flexible auxiliary supporting structure |
| CN115235399A (en) * | 2022-06-10 | 2022-10-25 | 中国第一汽车股份有限公司 | A method and device for determining the thickness of an adjusting shim for a drive axle gear |
| CN119196253A (en) * | 2024-09-27 | 2024-12-27 | 珠海格力电器股份有限公司 | RV reducer, robot and method for detecting running state of RV reducer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948775A (en) * | 2006-11-14 | 2007-04-18 | 北京机械工业学院 | Method of regulating bearing pretightening force using heat characteristics of metal material and its device |
| CN103543012A (en) * | 2013-10-14 | 2014-01-29 | 西安交通大学 | Rolling bearing stiffness testing experiment device and experiment method thereof |
| CN105537629A (en) * | 2016-02-05 | 2016-05-04 | 河南正航主轴科技有限公司 | Intelligent electric spindle |
| CN205280268U (en) * | 2016-01-12 | 2016-06-01 | 广东富华重工制造有限公司 | Main differential mechanism bearing pretightning force test fixture that subtracts |
-
2016
- 2016-11-30 CN CN201611077654.XA patent/CN107340091B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948775A (en) * | 2006-11-14 | 2007-04-18 | 北京机械工业学院 | Method of regulating bearing pretightening force using heat characteristics of metal material and its device |
| CN103543012A (en) * | 2013-10-14 | 2014-01-29 | 西安交通大学 | Rolling bearing stiffness testing experiment device and experiment method thereof |
| CN205280268U (en) * | 2016-01-12 | 2016-06-01 | 广东富华重工制造有限公司 | Main differential mechanism bearing pretightning force test fixture that subtracts |
| CN105537629A (en) * | 2016-02-05 | 2016-05-04 | 河南正航主轴科技有限公司 | Intelligent electric spindle |
Non-Patent Citations (4)
| Title |
|---|
| 乘用车变速器轴承预紧力测试技术及自动调节方法;陈德鑫 等;《轴承》;20131231(第12期);42-46 |
| 滚动轴承预紧的意义和预紧力的估算及调整;李红光;《机械制造》;20140930;第42卷(第481期);45-48 |
| 轴承预紧力测试装置的研制;李新宇 等;《机械设计与制造》;20090228(第2期);118-119 |
| 高速机床主轴轴承预紧力理论分析;蔡军 等;《精密制造与自动化》;20080930(第3期);29-32,58 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107340091A (en) | 2017-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107340091B (en) | Bearing assembly pretightening power calculation method and pretightning force detection device | |
| US8944695B2 (en) | Bearing cartridge | |
| Choi | Thermal characteristics of the spindle bearing system with a gear located on the bearing span | |
| US20160017914A1 (en) | Method of setting bearing preload | |
| US10221888B2 (en) | Tensioner and method for preloading a bearing | |
| US6796031B1 (en) | Process for setting bearings and verifying force preload | |
| US9784309B2 (en) | Angular contact self-aligning toroidal rolling element bearing | |
| Hwang et al. | Development of automatic variable preload device for spindle bearing by using centrifugal force | |
| Hwang et al. | Development of a simple determination method of variable preloads for high speed spindles in machine tools | |
| Murugesan et al. | Analysis of an angular contact ball bearing failure and strategies for failure prevention | |
| CN101299002B (en) | Sensor gap balancer | |
| Liu et al. | Study of the temperature distribution of a machine tool spindle bearing based on FBG quasi-distributed sensing | |
| US10942074B2 (en) | Method for monitoring spindle preload amount | |
| Takahashi et al. | Effects of axial clearance on surface initiated flaking in tapered roller bearings | |
| Barmanov et al. | Ball bearing dynamics at the interference fit on balls | |
| Gärtner et al. | Evaluation of hybrid spindle bearings with nitriding raceway steels under high rotational speeds | |
| Videira et al. | Design, assembly and preloading of ball bearings for space applications-lessons learned and guidelines for future success | |
| Brecher et al. | Design of an aircraft generator with radial force control | |
| CN109839051B (en) | Method for determining axial clearance of three-row cylindrical roller variable pitch bearing | |
| Johns et al. | Setting Differential Pinion Bearing Preload Using System Stiffness as Estimated by Frequency Response | |
| CA2618425C (en) | Method for calibrating a sensor system of a measuring bearing for a bearing installation | |
| JP4962014B2 (en) | Manufacturing method of hub unit | |
| Sarkar et al. | Robust design of spiral groove journal bearing | |
| CN115438432A (en) | Calculation method for bearing assembling pre-tightening amount | |
| Aschenbrenner et al. | A method for the tolerance analysis of bearing seats for cylindrical roller bearings in respect to operating clearance and fatigue life |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |