CN113899332B - Method for measuring channel diameter of small-size thrust bearing ring - Google Patents
Method for measuring channel diameter of small-size thrust bearing ring Download PDFInfo
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- CN113899332B CN113899332B CN202111172452.4A CN202111172452A CN113899332B CN 113899332 B CN113899332 B CN 113899332B CN 202111172452 A CN202111172452 A CN 202111172452A CN 113899332 B CN113899332 B CN 113899332B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 101100464070 Arabidopsis thaliana PIGM gene Proteins 0.000 claims description 8
- 101100520635 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) PNT1 gene Proteins 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
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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
- G01B21/10—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 diameters
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a method for measuring the channel diameter of a small-size thrust bearing ring, and relates to a method for measuring the channel diameter of the small-size thrust bearing ring. The invention aims to solve the problems of low accuracy and low efficiency of quantitative measurement of the diameters of the channels of the small-size thrust bearing rings with different specifications. The method comprises the following steps: 1. establishing a coordinate system xOyz by taking the central axis of the inner diameter of the ferrule as the z-axis direction and the end face of the ferrule as the xy-plane; 2. performing size measurement on the channel circular arc according to the circular track under a coordinate system xOyz, and fitting the circle center of the circular arc to obtain a channel fitting circle; projecting the channel fitting circle on an xy plane, and translating a coordinate system xOyz to obtain a coordinate system x 1O1y1z1; 3. and measuring two circular arcs which are coincident with the axis of the X 1 under the plane of the X 1y1, wherein the distance D between the centers of the two circular arcs is the diameter of the ferrule channel. The invention is used for measuring the diameter of the small-size thrust bearing ring channel.
Description
Technical Field
The invention relates to a method for measuring the channel diameter of a small-size thrust bearing ring.
Background
For small-size thrust bearing ring channel diameter measurement, due to the characteristics of the size and structure, the conventional method is used for measurement, and certain defects always exist. Such as: the template method is to qualitatively judge whether the diameter of the ball track of the thrust ball bearing ring is qualified or not by a scraping method or a light gap method, and cannot quantitatively give specific values; when the three-ball method is used for measurement, the clamping adjustment is difficult due to the small diameter size of the ferrule channel, the measurement repeatability is poor, and the numerical value can be determined only by measuring one ferrule for a plurality of times; the profilometer measuring method is a quicker method, but because the diameter position of the channel maximum is indirectly determined by using the diameter center of the ferrule, the measuring result can be influenced by the concentricity of the diameter center and the diameter center of the ferrule channel, and the measuring result is more accurate only when the concentricity of the diameter center and the diameter center is smaller. Therefore, a method with high measurement accuracy, high measurement efficiency and good universality is needed.
Disclosure of Invention
The invention aims to solve the problems of low accuracy and low efficiency of quantitative measurement of the diameters of the channels of small-size thrust bearing rings with different specifications, and provides a method for measuring the diameters of the channels of the small-size thrust bearing rings.
The invention discloses a method for measuring the diameter of a small-size thrust bearing ring channel, which comprises the following steps:
1. The thrust bearing to be measured is horizontally placed on a measuring table, a central axis of the inner diameter of a ferrule is taken as a z-axis direction, and the end face of the ferrule is taken as an xy plane, so that a coordinate system xOyz is established;
2. performing size measurement on the channel circular arc according to a circular track in a coordinate system xOyz, and fitting the circle center of each measured circular arc to obtain a channel fitting circle; projecting the channel fitting circle on an xy plane, translating the coordinate system xOyz to enable the origin of the coordinate system xOyz to coincide with the circle center of the channel fitting circle, and obtaining a coordinate system x 1O1y1z1;
3. Two circular arcs which are coincident with the axis of the x 1 are measured under the plane of the x 1y1, the circle centers of the two circular arcs are respectively marked as PNT1 and PNT2, and the distance D between the PNT1 and the PNT2 is the diameter of a ferrule channel.
The invention has the beneficial effects that:
The invention can effectively solve the problems of the inner diameter of the ferrule and the concentricity of the channel, and has the advantages of high measurement efficiency, high accuracy, good universality and the like. In practical application, the diameter of the channel of the thrust collar of all types can be accurately measured by selecting measuring pins with different sizes. The measurement can be performed, whether large or small, as long as the three-dimensional range permits.
Drawings
FIG. 1 is a schematic cross-sectional view of a thrust bearing to be tested; wherein 1 represents an arc;
FIG. 2 is a schematic plan view of a channel fitting circle; wherein 1 represents a channel fitting circle, 2 represents the inner diameter of the ferrule, 3 represents the circle center of the channel fitting circle, and 2 represents the circle center of the inner diameter of the ferrule;
FIG. 3 is a schematic illustration of ferrule channel diameter measurement; where 1 represents a channel fitting circle.
Detailed Description
The first embodiment is as follows: the method for measuring the channel diameter of the small-size thrust bearing ring in the embodiment specifically comprises the following steps:
1. The thrust bearing to be measured is horizontally placed on a measuring table, a central axis of the inner diameter of a ferrule is taken as a z-axis direction, and the end face of the ferrule is taken as an xy plane, so that a coordinate system xOyz is established;
2. performing size measurement on the channel circular arc according to a circular track in a coordinate system xOyz, and fitting the circle center of each measured circular arc to obtain a channel fitting circle; projecting the channel fitting circle on an xy plane, translating the coordinate system xOyz to enable the origin of the coordinate system xOyz to coincide with the circle center of the channel fitting circle, and obtaining a coordinate system x 1O1y1z1;
3. Two circular arcs which are coincident with the axis of the x 1 are measured under the plane of the x 1y1, the circle centers of the two circular arcs are respectively marked as PNT1 and PNT2, and the distance D between the PNT1 and the PNT2 is the diameter of a ferrule channel.
The second embodiment is as follows: the first difference between this embodiment and the specific embodiment is that: and step one, the inner diameter size of the ferrule of the thrust bearing to be tested is more than or equal to 8mm. The other is the same as in the first embodiment.
And a third specific embodiment: this embodiment differs from the first or second embodiment in that: and step one, the inner diameter size of the ferrule of the thrust bearing to be tested is 10mm. The other is the same as the first or second embodiment.
The specific embodiment IV is as follows: this embodiment differs from one of the first to third embodiments in that: and in the second step, the number of times of size measurement is more than 20. The other is the same as in one of the first to third embodiments.
Fifth embodiment: this embodiment differs from one to four embodiments in that: the number of the dimensional measurements in the second step is 36. The others are the same as in one to one fourth embodiments.
The following examples are used to verify the benefits of the present invention:
embodiment one: the method for measuring the diameter of the small-size thrust bearing ring channel comprises the following steps:
1. The thrust bearing to be measured is horizontally placed on a measuring table, a central axis of the inner diameter of a ferrule is taken as a z-axis direction, and the end face of the ferrule is taken as an xy plane, so that a coordinate system xOyz is established;
2. carrying out 36 dimensional measurements on the channel circular arc according to a circular track under a coordinate system xOyz, and fitting the circle center of each measured circular arc to obtain a channel fitting circle; projecting the channel fitting circle on an xy plane, translating the coordinate system xOyz to enable the origin of the coordinate system xOyz to coincide with the circle center of the channel fitting circle, and obtaining a coordinate system x 1O1y1z1;
3. Two circular arcs which are coincident with the axis of the x 1 are measured under the plane of the x 1y1, the circle centers of the two circular arcs are respectively marked as PNT1 and PNT2, and the distance D between the PNT1 and the PNT2 is the diameter of a ferrule channel.
Selecting one thrust bearing of a certain model, carrying out fixed-point measurement for 10 times according to the method, wherein the measurement result is shown in the following table:
Table 1 units: mm (mm)
The maximum difference of the 10 measurement results is 0.0019mm, and the measurement repeatability meets the process requirement.
After the diameter of a ring channel measured by the method can be used as a standard component, the diameter of the ring channel of other thrust bearing rings of the same type can be measured by using a special measuring instrument for the bearing.
In practical application, the method can accurately measure the diameters of the channels of all types of thrust ferrules by selecting measuring pins with different sizes. The measurement can be performed, whether large or small, as long as the three-dimensional range permits.
Claims (5)
1. The method for measuring the channel diameter of the small-size thrust bearing ring is characterized by comprising the following steps of:
1. The thrust bearing to be measured is horizontally placed on a measuring table, a central axis of the inner diameter of a ferrule is taken as a z-axis direction, and the end face of the ferrule is taken as an xy plane, so that a coordinate system xOyz is established;
2. performing size measurement on the channel circular arc according to a circular track in a coordinate system xOyz, and fitting the circle center of each measured circular arc to obtain a channel fitting circle; projecting the channel fitting circle on an xy plane, translating the coordinate system xOyz to enable the origin of the coordinate system xOyz to coincide with the circle center of the channel fitting circle, and obtaining a coordinate system x 1O1y1z1;
3. Two circular arcs which are coincident with the axis of the x 1 are measured under the plane of the x 1y1, the circle centers of the two circular arcs are respectively marked as PNT1 and PNT2, and the distance D between the PNT1 and the PNT2 is the diameter of a ferrule channel.
2. The method for measuring the diameter of a small-sized thrust bearing ring raceway according to claim 1, wherein in the step one, the inner diameter of the ring of the thrust bearing to be measured is 8mm or more.
3. A method of measuring the diameter of a small-sized thrust bearing ring channel according to claim 2, characterized in that in step one the inner diameter of the ring of the thrust bearing to be measured is 10mm.
4. A method of measuring the diameter of a small-sized thrust bearing ring channel according to claim 1, characterized in that the number of dimensional measurements in step two is greater than 20.
5. A method of measuring the diameter of a small-sized thrust bearing ring raceway according to claim 4, in which the number of dimensional measurements in step two is 36.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111172452.4A CN113899332B (en) | 2021-10-08 | 2021-10-08 | Method for measuring channel diameter of small-size thrust bearing ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111172452.4A CN113899332B (en) | 2021-10-08 | 2021-10-08 | Method for measuring channel diameter of small-size thrust bearing ring |
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| Publication Number | Publication Date |
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| CN113899332A CN113899332A (en) | 2022-01-07 |
| CN113899332B true CN113899332B (en) | 2024-07-23 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321639A (en) * | 2016-08-31 | 2017-01-11 | 洛阳轴研科技股份有限公司 | Matching method for ball diameters of four-point contact ball bearing rollers |
| CN107907071A (en) * | 2017-11-29 | 2018-04-13 | 南京工程学院 | A kind of slave mode bearing groove measurer for curvity radius and method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010005675A1 (en) * | 2010-01-26 | 2011-07-28 | Schaeffler Technologies GmbH & Co. KG, 91074 | Measuring system for e.g. checking quality of manufactured bearing ring of roller bearing in manufacturing facility, has data processing system, and measuring arrangement movable relative to measuring device stand along measuring direction |
| CN109059766B (en) * | 2018-08-20 | 2020-12-08 | 河南科技大学 | Method for detecting inner ring groove position of deep groove ball bearing |
| CN111024392B (en) * | 2019-10-31 | 2020-07-14 | 哈尔滨理工大学 | Comprehensive analysis device and analysis method for full ball bearing with variable speed curved surface |
| CN112815838B (en) * | 2020-12-30 | 2023-03-31 | 中国航发哈尔滨轴承有限公司 | Method for measuring chamfer size of inner ring and outer ring of bearing by image measuring instrument |
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- 2021-10-08 CN CN202111172452.4A patent/CN113899332B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321639A (en) * | 2016-08-31 | 2017-01-11 | 洛阳轴研科技股份有限公司 | Matching method for ball diameters of four-point contact ball bearing rollers |
| CN107907071A (en) * | 2017-11-29 | 2018-04-13 | 南京工程学院 | A kind of slave mode bearing groove measurer for curvity radius and method |
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| CN113899332A (en) | 2022-01-07 |
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