CN114061406A - Double-row tapered roller bearing clearance adjusting method - Google Patents
Double-row tapered roller bearing clearance adjusting method Download PDFInfo
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- CN114061406A CN114061406A CN202111323411.0A CN202111323411A CN114061406A CN 114061406 A CN114061406 A CN 114061406A CN 202111323411 A CN202111323411 A CN 202111323411A CN 114061406 A CN114061406 A CN 114061406A
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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Abstract
The invention belongs to the technical field of bearing equipment, and particularly relates to a double-row tapered roller bearing clearance adjusting method, which comprises the following steps: the method comprises the following steps: measuring the sinking amount of the roller when the upper row of tapered rollers of the measured bearing are self-locked, and recording the sinking amount as delta H; step two: contacting a measuring meter with the upper end face of the inner ring at the middle upper part of the measured bearing, and adjusting the number of the measuring meter to be + [ delta ] H; step three: placing a standard space ring between an upper inner ring and a lower inner ring of a tested bearing; step four: rotating the upper inner ring, and recording the reading of a measuring meter as X, wherein X is the actually measured axial clearance of the measured bearing; step five: by the formula Δ C1C1=△C0C0- (X-Ga) calculating the actual cage dimensional tolerance, where Δ C1C1For dimensional tolerances of the actual cage, Δ C0C0Is the theoretical tolerance of a standard space ring, and Ga is the standard axial clearance; step six: and machining a spacer ring product according to the dimensional tolerance of the actual spacer ring, and assembling the spacer ring product into a corresponding bearing. The invention can accurately adjust the axial clearance only by measuring the sinking amount, and saves time and laborAnd the efficiency is high.
Description
Technical Field
The invention belongs to the technical field of bearing equipment, relates to a double-row tapered roller bearing assembling method, and particularly relates to a double-row tapered roller bearing clearance adjusting method.
Background
The bearing clearance is a clearance between a bearing rolling element and an inner ring shell and an outer ring shell of the bearing, and the bearing clearance can affect the rolling fatigue life, temperature rise, noise, vibration and other performances of the bearing, so that the clearance data of the bearing needs to be adjusted and measured when the bearing leaves a factory. In the bearing industry, when the double row tapered roller bearing shown in fig. 1 is assembled and adjusted for play, a measurement method and an empirical method are commonly used. Although the measurement method is accurate, the efficiency is low, and the empirical method is high in efficiency and not easy to master. Is not suitable for large-scale production and processing of enterprises.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a method for adjusting the axial play of a double-row tapered roller bearing, in which the axial play of the tapered roller bearing is adjusted by using a sinking method, and by using a roller "self-locking phenomenon" generated between outer tapered raceways. The invention adjusts the bearing clearance through the space ring, and mainly acts on the double-row tapered roller bearing.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a double-row tapered roller bearing clearance adjusting method comprises the following steps:
the method comprises the following steps: measuring the sinking amount of the roller when the upper row of tapered rollers of the measured bearing are self-locked, and recording the sinking amount as delta H;
step two: contacting a measuring meter with the upper end face of the inner ring at the middle upper part of the measured bearing, and adjusting the number of the measuring meter to be + [ delta ] H;
step three: placing a standard space ring between an upper inner ring and a lower inner ring of a tested bearing;
step four: rotating the upper inner ring, and recording the reading of a measuring meter as X, wherein X is the actually measured axial clearance of the measured bearing;
step five: by the formula Δ C1C1 = △C0C0- (X-Ga) calculating the actual cage dimensional tolerance, where Δ C1C1
For dimensional tolerances of the actual cage, Δ C0C0Is the theoretical tolerance of a standard space ring, and Ga is the standard axial clearance;
step six: and machining a spacer ring product according to the dimensional tolerance of the actual spacer ring, and assembling the spacer ring product into a corresponding bearing.
Further, for the step one, the method for measuring Δ H includes the following steps:
step 1, assembling a group of inner assemblies into an outer ring to form a tested bearing assembly, placing the tested bearing assembly on a measuring platform, enabling the assembled inner assemblies to be located at the lower part of the tested bearing assembly, and enabling the lower end face of the inner ring to be in contact with the measuring platform; contacting the measuring meter with the upper end surface of the outer ring, and adjusting the measuring meter to a zero position;
step 2, turning the bearing assembly to be measured for 180 degrees, enabling the assembled inner assembly to be located at the upper part of the bearing assembly to be measured, and enabling the lower end face of the outer ring to be in contact with the measuring platform; keeping the measuring gauge still, enabling the upper end face of the inner ring turned to the upper part to be in contact with the measuring gauge, and reading a measuring indicating number, wherein the measuring indicating number is the sinking amount delta H of the roller;
and 3, assembling another group of inner components into the outer ring to form the tested bearing.
Further, the inner assembly includes a tapered roller and an inner race.
Further, in step 1, the measuring meter measures the outer ring to rotate before the measuring meter makes the raceway and the tapered roller fully contact, and all parts of the bearing assembly to be measured are in normal positions.
Further, in step 2, the measuring meter measures the front rotating inner ring, so that the raceway is fully contacted with the tapered roller, and each component of the bearing assembly to be measured is in a normal position.
Further, the sinking amount delta H of the roller is the axial displacement of the roller when the roller reaches a self-locking state.
Further, the measuring meter is a dial indicator.
Further, the Ga takes the maximum value of the standard axial play range.
The invention has the beneficial effects that: the assembly method can accurately adjust the axial clearance Ga as long as the sinking amount delta H is accurately measured, and saves a plurality of measuring links compared with a measuring method. The sinking method is more convenient than the measuring method in adjusting the clearance, saves time and labor, is easy to learn and understand and has high efficiency. Is very suitable for large-scale enterprise production.
Drawings
FIG. 1 is a schematic view of a double row tapered roller bearing;
FIG. 2 is a schematic view of a non-self-locking state of a tapered roller;
FIG. 3 is a schematic view of a self-locking state of a tapered roller;
FIG. 4 is a diagram illustrating the inspection of a double row tapered roller bearing.
Detailed Description
In order to make the adjusting method of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention.
Referring to the attached drawings 1-4, because the tapered roller can generate the self-locking phenomenon between the inner and outer tapered raceways of the bearing, when the self-locking phenomenon is reflected on the position of fig. 3, a gap delta H1 which is difficult to eliminate exists between the large end face of the roller and the thrust rib of the inner ring, the gap value delta H1 is generally considered to be equal to the sinking amount delta H, and because the self-locking phenomenon can not be generated when the tapered roller is positioned on the position of fig. 2, the delta H can not exist, and the invention provides a new clearance adjustment method, namely the sinking method, derived due to the generation of the delta H.
It should be noted that Δ H1 is a gap between the large end face of the roller and the thrust rib of the inner ring, and the sinking Δ H of the roller is the axial displacement of the roller when the roller reaches the self-locking state. The two are in cosine relationship, but since the half angle of the roller is small and can be ignored, the gap value delta H1 and the gap value delta H are infinitely close, so that in practical production processing, for the convenience of recording and calculation, the gap value delta H1 is generally considered to be equal to the subsidence quantity delta H, and the gap value delta H and the subsidence quantity delta H are not distinguished.
The adjustment process of the sinking method comprises the following steps:
in the process of assembling and adjusting the clearance of the bearing, the sinking amount delta H is measured in advance, and because the delta H is a part of the axial clearance Ga, the delta H must be measured in advance to calculate the correct size of the end face of the space ring, so that the axial clearance Ga is ensured.
Taking the 350000 type bearing shown in fig. 1 as an example, the play adjustment process will be described in detail:
the first step is as follows: as shown in figure 2, the product is placed on a platform to be measured according to the position shown in figure 2, the outer ring is rotated by hand before measurement, all parts of the bearing are in normal positions, and then the dial indicator is adjusted to be at zero position.
The second step is that: turning the figure 2 by 180 degrees as shown in figure 3, rotating the AC inner assembly to enable all parts of the bearing to be in normal positions, and finding that the dial indicator is increased from the zero position of the figure 2 to another position, the increase of the size of the dial indicator is caused by the fact that a gap is generated between the large end face of the roller and the flange due to self-locking of the roller (as shown in figure 3), the increased size of the dial indicator is the sinking amount delta H, and the gap can not exist due to the fact that the self-locking phenomenon of the roller does not exist in the position of the figure 2.
The third step: and calculating the subsidence, wherein the increased size of the dial indicator is the subsidence delta H in the second step, and the subsidence delta H can be directly read from the dial indicator.
The fourth step: as shown in fig. 4, another inner assembly CE is taken out and placed in the outer ring BD and placed on another platform, and since the roller at the position of the inner assembly CE has no self-locking phenomenon, no Δ H is naturally generated, and no influence is exerted on Ga. And the AC inner assembly generated Δ H we have in the first three stepsAfter the measurement, the dial indicator is adjusted to the position of plus delta H in advance, a standard space ring (the standard space ring is only used as a measuring standard and can be selected according to specific conditions) is selected, the space ring is placed in the graph 4, the AC inner assembly is rotated by hands, all parts of the bearing are also positioned at the normal position, the read data is X, and then delta C1C1This can be calculated from the following equation:
△C1C1 = △C0C0-（X-Ga）
wherein Δ C1C1For dimensional tolerances of the actual cage, Δ C0C0And the theoretical tolerance of the standard spacer ring is shown, X is the actually measured axial clearance of the measured bearing, and Ga is the standard axial clearance.
Calculating the width deviation Delta C of the space ring of each set of bearing by the formula1C1，△C1C1The axial clearance X is obtained through actual measurement in a standard clearance range Ga, the spacer ring is processed according to the calculated deviation and is placed in a corresponding bearing, and the axial clearance of the bearing can meet the requirement.
It should be noted that Ga is used more to indicate the axial play range. The axial play is intermittent: gamin Gamax, the maximum value Gamax of Ga used in calculation. Because the bearing is assembled according to the maximum clearance when leaving a factory, the clearance can be properly reduced in the process of customer assembly, and the maximum value Gamax is adopted to ensure that the clearance is in the interval after the bearing is assembled.
The above list is only the preferred embodiment of the present invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (8)
1. A double-row tapered roller bearing clearance adjusting method is characterized by comprising the following steps:
the method comprises the following steps: measuring the sinking amount of the roller when the upper row of tapered rollers of the measured bearing are self-locked, and recording the sinking amount as delta H;
step two: contacting a measuring meter with the upper end face of the inner ring at the middle upper part of the measured bearing, and adjusting the number of the measuring meter to be + [ delta ] H;
step three: placing a standard space ring between an upper inner ring and a lower inner ring of a tested bearing;
step four: rotating the upper inner ring, and recording the reading of a measuring meter as X, wherein X is the actually measured axial clearance of the measured bearing;
step five: by the formula Δ C1C1 = △C0C0- (X-Ga) calculating the actual cage dimensional tolerance, where Δ C1C1
For dimensional tolerances of the actual cage, Δ C0C0Is the theoretical tolerance of a standard space ring, and Ga is the standard axial clearance;
step six: and machining a spacer ring product according to the dimensional tolerance of the actual spacer ring, and assembling the spacer ring product into a corresponding bearing.
2. The double row tapered roller bearing clearance adjustment method according to claim 1, characterized in that: in the first step, the method for measuring Δ H comprises the following steps:
step 1, assembling a group of inner assemblies into an outer ring to form a tested bearing assembly, placing the tested bearing assembly on a measuring platform, enabling the assembled inner assemblies to be located at the lower part of the tested bearing assembly, and enabling the lower end face of the inner ring to be in contact with the measuring platform; contacting the measuring meter with the upper end surface of the outer ring, and adjusting the measuring meter to a zero position;
step 2, turning the bearing assembly to be measured for 180 degrees, enabling the assembled inner assembly to be located at the upper part of the bearing assembly to be measured, and enabling the lower end face of the outer ring to be in contact with the measuring platform; keeping the measuring gauge still, enabling the upper end face of the inner ring turned to the upper part to be in contact with the measuring gauge, and reading a measuring indicating number, wherein the measuring indicating number is the sinking amount delta H of the roller;
and 3, assembling another group of inner components into the outer ring to form the tested bearing.
3. The double row tapered roller bearing play adjustment method according to claim 2, characterized in that: the inner assembly includes a tapered roller and an inner race.
4. The double row tapered roller bearing play adjustment method according to claim 2, characterized in that: and (3) in the step 1, the outer ring is rotated before the measurement of the measuring meter, so that the raceway is fully contacted with the tapered roller, and all parts of the bearing assembly to be measured are in normal positions.
5. The double row tapered roller bearing play adjustment method according to claim 2, characterized in that: and (3) in the step 2, the measuring meter measures the front rotating inner ring to ensure that the raceway is fully contacted with the tapered roller, and all parts of the bearing assembly to be measured are in normal positions.
6. The double row tapered roller bearing play adjustment method according to claim 1 or 2, characterized in that: the sinking quantity delta H of the roller is the axial displacement of the roller when the roller reaches a self-locking state.
7. The double row tapered roller bearing play adjustment method according to claim 1 or 2, characterized in that: the measuring meter is a dial indicator.
8. The double row tapered roller bearing clearance adjustment method according to claim 1, characterized in that: the Ga takes the maximum value of the standard axial play range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111323411.0A CN114061406A (en) | 2021-11-10 | 2021-11-10 | Double-row tapered roller bearing clearance adjusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111323411.0A CN114061406A (en) | 2021-11-10 | 2021-11-10 | Double-row tapered roller bearing clearance adjusting method |
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| Publication Number | Publication Date |
|---|---|
| CN114061406A true CN114061406A (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111323411.0A Pending CN114061406A (en) | 2021-11-10 | 2021-11-10 | Double-row tapered roller bearing clearance adjusting method |
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| CN (1) | CN114061406A (en) |
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2021
- 2021-11-10 CN CN202111323411.0A patent/CN114061406A/en active Pending
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