CN111811457A - Method for measuring machining size of end face of spacer ring of bearing - Google Patents
Method for measuring machining size of end face of spacer ring of bearing Download PDFInfo
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- CN111811457A CN111811457A CN202010602098.3A CN202010602098A CN111811457A CN 111811457 A CN111811457 A CN 111811457A CN 202010602098 A CN202010602098 A CN 202010602098A CN 111811457 A CN111811457 A CN 111811457A
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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
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
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Abstract
The invention relates to the technical field of axial clearance measurement and spacer ring end face machining, in particular to a spacer ring end face machining size measuring method of a bearing. Measuring the vertical distance A 'B' from the upper end surface of the upper double-row outer ring to the upper end surface of the double-row inner ring; measuring the vertical distance B 'C' from the lower end face of the upper double-row outer ring to the lower end face of the upper single-row inner ring; measuring the actual size A 'C' of the width AC of the upper double-row outer ring; measuring the vertical distance D 'E' from the lower end face of the lower double-row outer ring to the lower end face of the double-row inner ring; measuring the vertical distance C 'D' from the upper end face of the lower double-row outer ring to the upper end face of the lower single-row inner ring; measuring the actual size C 'E' of the width CE of the lower double-row outer ring; calculating the widths BB and DD of the two inner partition rings; measuring the actual size B 'D' of the double-row inner ring width BD; and calculating the space ring width CC of the outer space ring. The clearance measurement has been solved to it and has had the auto-lock, and the measuring result has the error problem.
Description
Technical Field
The invention relates to the technical field of axial clearance measurement and spacer ring end face machining, in particular to a spacer ring end face machining size measuring method of a bearing.
Background
The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision.
The 380690/HC bearing is different from a common four-row tapered roller bearing and has a special structure comprising a double-row inner ring, two single-row inner rings, two double-row outer rings, an outer space ring and two inner space rings.
The axial clearance in the four-row tapered roller bearing is ensured by the width dimension of the inner space ring and the outer space ring. When the width of the spacer ring is larger than the distance between the end faces of the two sets of rings at the position where the spacer ring is located, the spacer ring jacks up the inner ring and the outer rings, and a gap is formed between the tapered roller and the raceway of the ferrule. The clearance between the axial directions of the bearings is the axial play of the bearings. The whole measuring process of the spacer ring product is to calculate the machining dimension of the end face of the spacer ring, and the size of the product clearance is ensured through the dimension of the end face of the spacer ring.
The original measurement method adopts a direct measurement method: after the size of a vertical distance C ' C between the lower end surface of the upper double-row outer ring and the upper end surface of the lower double-row outer ring, a vertical distance B ' B ' between the lower end surface of the upper single-row inner ring and the upper end surface of the double-row inner ring and a vertical distance D ' D ' between the lower end surface of the double-row inner ring and the upper end surface of the lower single-row inner ring are directly measured, the width CC = C ' C ' + Ga (Ga is an axial clearance intermediate value); the upper inner spacer width is BB = B '+ Ga and the lower inner spacer width is DD = D' + Ga. When 380690/HC bearing is measured, because its rolling element taper angle is smaller, there is a gap between the flange and the rolling element, the self-locking phenomenon appears. The clearance amount formed by self-locking is K, and the rolling body and the middle flange can not be in good contact, so that the self-locking exists in the measuring process, and the accuracy of the axial clearance measurement is influenced.
380690/HC bearings are generally used on H-shaped lai steel vertical rolls, because of the working characteristics, various requirements on the bearings are strict, especially the detection of the axial play, the original axial play measuring method always adopts a direct measuring method, the accuracy of the axial play measurement by the common method is not high, and the requirements cannot be met.
Disclosure of Invention
In view of the defects of the prior art, the invention provides an axial play measuring method, which solves the problems that the play measurement has self-locking and the measuring result has error. The labor intensity is reduced, the product quality is ensured, the working efficiency is improved, and the measurement accuracy is improved.
In order to achieve the purpose, the invention adopts the technical scheme that the bearing is a four-row tapered roller bearing comprising a double-row inner ring, two single-row inner rings, two double-row outer rings, an outer space ring and two inner space rings, and the four-row tapered roller bearing comprises the following specific steps:
step 1: measuring the vertical distance A 'B' from the upper end surface of the upper double-row outer ring to the upper end surface of the double-row inner ring; measuring the vertical distance B 'C' from the lower end face of the upper double-row outer ring to the lower end face of the upper single-row inner ring;
step 2: measuring the actual size A 'C' of the width AC of the upper double-row outer ring;
and step 3: measuring the vertical distance D 'E' from the lower end face of the lower double-row outer ring to the lower end face of the double-row inner ring; measuring the vertical distance C 'D' from the upper end face of the lower double-row outer ring to the upper end face of the lower single-row inner ring;
and 4, step 4: measuring the actual size C 'E' of the width CE of the lower double-row outer ring;
and 5: using the measurement results: calculating the widths BB and DD of the two inner partition rings;
BB=( A’B’+B’C’)-A’C’+Ga；
DD= (D’E’+C’D’)-C’E’+Ga；
wherein BB is the processing width of the upper inner spacer; DD is the processing width of the inner spacer at the lower part; ga takes the axial clearance intermediate value of the product;
step 6: measuring the actual size B 'D' of the double-row inner ring width BD;
and 7: the space ring width CC of the outer space ring is calculated,
CC= (A’B’+B’D’+D’E’) -(A’C’+C’E’)+ Ga；
wherein CC is the processing width of the outer space ring.
Based on the technical scheme, the axial clearance of the outer space ring is not required to be turned and measured, only the actual sizes of two end faces of the double-row inner ring are required to be measured, and the measurement A 'B' and the measurement D 'E' during the measurement of the two rows of inner space rings are utilized, and the measurement can be completed through calculation: the method can effectively eliminate the influence of self-locking and improve the measurement accuracy.
Further, the specific method for measuring A 'B' in the step 1 is to place an upper double-row outer ring on the double-row inner ring, rotate the upper double-row outer ring to make the rolling body completely contact with the raceway, and take the average value of 4-point measurement values in the circumferential direction as the measurement result of A 'B'.
Further, the specific method for measuring B 'C' in the step 1 is to place an upper double-row outer ring on an upper single-row inner ring, rotate the upper double-row outer ring to enable a rolling body to be in complete contact with a raceway, and take an average value of 4-point measurement values in the circumferential direction as a B 'C' measurement result.
Further, the measuring method of a 'C' in step 2 is to take the average value of 4 measurements in the circumferential direction of the upper double-row outer ring as the measuring result a 'C'.
Further, the specific method for measuring D 'E' in step 3 is to place the lower double-row outer ring on the double-row inner ring, rotate the upper double-row outer ring to make the rolling elements completely contact with the raceway, and take the average of the 4-point measurement values in the circumferential direction as the D 'E' measurement result.
Further, the specific method for measuring C 'D' in step 3 is to place the lower double-row outer ring on the lower single-row inner ring, rotate the upper double-row outer ring to make the rolling elements fully contact with the raceway, and take the average of the 4-point measurement values in the circumferential direction as the measurement result of C 'D'.
Furthermore, the measuring method for measuring C 'E' in the step 4 is to take the average value of 4 measurements in the circumferential direction of the lower double-row outer ring as the measurement result C 'E'.
Further, the measuring method for measuring B 'D' in the step 6 is that the average value of 4 measurements in the circumferential direction of the double-row inner ring is the measuring result B 'D'.
The invention has the beneficial effects that: the overturning process of the outer space ring during measurement is reduced, the problems that self-locking exists in play measurement and error exists in a measurement result are solved with the least overturning measurement times. The labor intensity is reduced, the product quality is ensured, the working efficiency is improved, and the measurement accuracy is improved.
Drawings
FIG. 1 is a schematic view of the 380690/HC bearing of the present invention;
FIG. 2 is a schematic view of direct measurement of axial play of an outer spacer before improvement;
FIG. 3 is a schematic view of direct measurement of axial play of an inner spacer before improvement;
FIG. 4 is a self-locking schematic view;
FIG. 5 is a schematic view of a measurement site of the present invention;
FIG. 6 is a schematic diagram of the measurement of A 'B' in step 1;
FIG. 7 is a schematic diagram of the measurement of B 'C' in step 1;
FIG. 8 is a schematic diagram of D 'E' measurement in step 3;
FIG. 9 is a schematic diagram of the measurement of C 'D' in step 3;
in the figure: 1. the inner ring structure comprises an upper double-row outer ring, 2 double-row inner rings, 3 lower double-row outer rings, 4 upper single-row inner rings, 5 lower single-row inner rings, 6 outer space rings, 7 upper inner space rings and 8 lower inner space rings.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A method for measuring the machining size of the end face of a space ring of a bearing is a four-row tapered roller bearing which comprises a double-row inner ring, two single-row inner rings, two double-row outer rings, an outer space ring and two inner space rings, and comprises the following specific steps:
step 1: measuring the vertical distance A 'B' from the upper end surface of the upper double-row outer ring to the upper end surface of the double-row inner ring;
specific methods for measuring A 'B': and (3) placing the upper double-row outer ring on the double-row inner ring, rotating the upper double-row outer ring to enable the rolling bodies to be in complete contact with the roller paths, and taking the average value of 4-point measurement values in the circumferential direction as an A 'B' measurement result.
Measuring the vertical distance B 'C' from the lower end face of the upper double-row outer ring to the lower end face of the upper single-row inner ring;
specific methods for measuring B 'C': and (3) placing the upper double-row outer ring on the upper single-row inner ring, rotating the upper double-row outer ring to enable the rolling bodies to be in complete contact with the roller paths, and taking the average value of 4-point measurement values in the circumferential direction as a B 'C' measurement result.
Step 2: measuring the actual size A 'C' of the width AC of the upper double-row outer ring;
measurement method of A 'C': taking the average value of 4 times of measurements in the circumferential direction of the upper double-row outer ring as a measurement result A 'C'.
And step 3: measuring the vertical distance D 'E' from the lower end face of the lower double-row outer ring to the lower end face of the double-row inner ring;
the specific method for measuring D 'E' is that the lower double-row outer ring is placed on the double-row inner ring, the upper double-row outer ring is rotated to make the rolling body completely contact with the raceway, and the average value of 4-point measuring values in the circumferential direction is taken as the D 'E' measuring result.
Measuring the vertical distance C 'D' from the upper end face of the lower double-row outer ring to the upper end face of the lower single-row inner ring;
the specific method for measuring C 'D' is that the lower double-row outer ring is placed on the lower single-row inner ring, the upper double-row outer ring is rotated to make the rolling body completely contact with the raceway, and the average value of 4-point measuring values in the circumferential direction is taken as the measuring result of C 'D'.
And 4, step 4: measuring the actual size C 'E' of the width CE of the lower double-row outer ring;
the measurement method for measuring C 'E' is to take the average value of 4 measurements in the circumferential direction of the lower double-row outer ring as the measurement result C 'E'.
And 5: using the measurement results: calculating the widths BB and DD of the two inner partition rings;
BB=( A’B’+B’C’)-A’C’+Ga；
DD= (D’E’+C’D’)-C’E’+Ga；
wherein BB is the processing width of the upper inner spacer; DD is the processing width of the inner spacer at the lower part; and Ga is the axial clearance intermediate value of the product.
It should be noted that: when the space ring exists, the width of the space ring is calculated according to the intermediate value of the required clearance, after the space ring is machined, the machining of the end face dimension of the space ring cannot be completely the same as the calculated dimension, machining deviation is ensured, the actual clearance values after machining are respectively S1, S2 and S3, and the actual clearance values after machining are in the interval of the required clearance of the product. The value of the play added during the calculation is denoted by Ga, which is a range of axial plays: Gamin-Gamax, the Ga used in the calculation is usually the median value (Gamin + Gamax)/2. To ensure that the post-machining play is within this interval.
Step 6: measuring the actual size B 'D' of the double-row inner ring width BD;
the measurement method for measuring B 'D' is that the average value of 4 measurements in the circumferential direction of the double-row inner ring is the measurement result B 'D'.
The axial clearance of the outer spacing ring is not required to be turned over and measured, and only the actual dimension B 'D' of the double-row inner ring width BD needs to be measured, and the A 'B' and the D 'E' measured when the two inner spacing rings are measured are utilized, so that the axial clearance measurement can be completed through the following calculation:
and 7: the space ring width CC of the outer space ring is calculated,
CC= (A’B’+B’D’+D’E’) -(A’C’+C’E’)+ Ga；
wherein CC is the processing width of the outer space ring.
Preferably, the detection values in the measuring process all adopt the average value of 4 measurements in the circumferential direction as the measuring result.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A method for measuring the machining size of the end face of a space ring of a bearing is disclosed, wherein the bearing comprises a double-row inner ring, two single-row inner rings, two double-row outer rings, an outer space ring and four-row tapered roller bearings with two inner space rings, and is characterized in that: the method comprises the following specific steps:
step 1: measuring the vertical distance A 'B' from the upper end surface of the upper double-row outer ring to the upper end surface of the double-row inner ring; measuring the vertical distance B 'C' from the lower end face of the upper double-row outer ring to the lower end face of the upper single-row inner ring;
step 2: measuring the actual size A 'C' of the width AC of the upper double-row outer ring;
and step 3: measuring the vertical distance D 'E' from the lower end face of the lower double-row outer ring to the lower end face of the double-row inner ring; measuring the vertical distance C 'D' from the upper end face of the lower double-row outer ring to the upper end face of the lower single-row inner ring;
and 4, step 4: measuring the actual size C 'E' of the width CE of the lower double-row outer ring;
and 5: using the measurement results: calculating the widths BB and DD of the two inner partition rings;
BB=( A’B’+B’C’)-A’C’+Ga；
DD= (D’E’+C’D’)-C’E’+Ga；
wherein BB is the processing width of the upper inner spacer; DD is the processing width of the inner spacer at the lower part; ga takes the axial clearance intermediate value of the product;
step 6: measuring the actual size B 'D' of the double-row inner ring width BD;
and 7: the space ring width CC of the outer space ring is calculated,
CC= (A’B’+B’D’+D’E’) -(A’C’+C’E’)+ Ga；
wherein CC is the processing width of the outer space ring.
2. The method for measuring the machining dimension of the end face of the spacer ring of the bearing according to claim 1, wherein: the specific method for measuring A 'B' in the step 1 is that an upper double-row outer ring is placed on a double-row inner ring, the upper double-row outer ring is rotated to enable a rolling body to be in full contact with a raceway, and the average value of 4-point measurement values in the circumferential direction is taken as an A 'B' measurement result.
3. The method for measuring the machining dimension of the end face of the spacer ring of the bearing according to claim 1, wherein: the specific method for measuring B 'C' in the step 1 is to place an upper double-row outer ring on an upper single-row inner ring, rotate the upper double-row outer ring to enable a rolling body to be in complete contact with a raceway, and take an average value of 4-point measurement values in the circumferential direction as a B 'C' measurement result.
4. The method for measuring the machining dimension of the end face of the spacer ring of the bearing according to claim 1, wherein: the measuring method of A 'C' in the step 2 is to take the average value of 4 times of measurements in the circumferential direction of the upper double-row outer ring as the measuring result A 'C'.
5. The method for measuring the machining dimension of the end face of the spacer ring of the bearing according to claim 1, wherein: the specific method for measuring D 'E' in the step 3 is that the lower double-row outer ring is placed on the double-row inner ring, the upper double-row outer ring is rotated to enable the rolling bodies to be in full contact with the roller paths, and the average value of 4-point measurement values in the circumferential direction is taken as a D 'E' measurement result.
6. The method for measuring the machining dimension of the end face of the spacer ring of the bearing according to claim 1, wherein: the specific method for measuring C 'D' in the step 3 is that a lower double-row outer ring is placed on a lower single-row inner ring, an upper double-row outer ring is rotated to enable a rolling body to be in complete contact with a raceway, and the average value of 4-point measurement values in the circumferential direction is taken as a C 'D' measurement result.
7. The method for measuring the machining dimension of the end face of the spacer ring of the bearing according to claim 1, wherein: the measuring method for measuring C 'E' in the step 4 is to take the average value of 4 times of measurements in the circumferential direction of the lower double-row outer ring as the measuring result C 'E'.
8. The method for measuring the machining dimension of the end face of the spacer ring of the bearing according to claim 1, wherein: the measuring method for measuring B 'D' in the step 6 is that the average value of 4 times of measurements in the circumferential direction of the double-row inner ring is the measuring result B 'D'.
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| CN202010602098.3A CN111811457A (en) | 2020-06-29 | 2020-06-29 | Method for measuring machining size of end face of spacer ring of bearing |
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| CN202010602098.3A CN111811457A (en) | 2020-06-29 | 2020-06-29 | Method for measuring machining size of end face of spacer ring of bearing |
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Application publication date: 20201023 |