CN106767298B - method for measuring central diameter of pocket of thrust angular contact ball bearing retainer - Google Patents
method for measuring central diameter of pocket of thrust angular contact ball bearing retainer Download PDFInfo
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- CN106767298B CN106767298B CN201710020682.6A CN201710020682A CN106767298B CN 106767298 B CN106767298 B CN 106767298B CN 201710020682 A CN201710020682 A CN 201710020682A CN 106767298 B CN106767298 B CN 106767298B
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- retainer
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- 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
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
Abstract
a method for measuring the central diameter of a pocket hole of a thrust angular contact ball bearing retainer relates to the technical field of bearing retainer measurement, a measuring device consists of a circular table, a first step, a second step and a cylinder, the retainer is provided with the pocket hole, the outer side surface of the cylinder is provided with the first step and the second step, the top surface of the cylinder is provided with the circular table, the middle parts of the cylinder and the circular table are provided with lightening holes, the lightening holes on the circular table are communicated with the lightening holes on the cylinder, the inner contact surfaces of the joints of the first step and the second step with the cylinder are provided with tool withdrawal grooves, and the product which is qualified is obtained when the measured value of the central diameter is in the range of the measured value of the central diameter by comparing the; the method has strong practicability, improves the accuracy of measuring the central diameter of the pocket of the thrust angular contact ball bearing retainer, improves the stability of measuring the central diameter of the pocket of the thrust angular contact ball bearing retainer, and provides inspection guarantee for the mass production of products, thereby further avoiding errors.
Description
Technical Field
The invention relates to the technical field of bearing retainer measurement, in particular to a method for measuring the central diameter of a pocket of a thrust angular contact ball bearing retainer.
Background
The known method needs to measure the pockets of the retainer when the thrust angular contact ball bearing retainer is produced, so as to judge whether the produced product meets the requirements, the existing method for measuring the central diameter of the pockets is that a vernier caliper measures the inner edge width or the outer edge width, and the pockets of the thrust angular contact ball bearing retainer have a certain inclination angle, so that the measurement is unstable when the vernier caliper measures point contact measurement, and the measurement of the inner edge width or the outer edge width needs to use the inner diameter or the outer diameter of the product as a reference, and the inner diameter or the outer diameter of the product has a certain deviation, so that the phenomenon that the error of the central diameter of the pockets measured by the existing method is larger is caused, and the production and development of enterprises are greatly influenced.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a method for measuring the central diameter of a pocket of a thrust angular contact ball bearing retainer.
In order to realize the purpose, the invention adopts the following technical scheme:
The utility model provides a thrust angular contact ball bearing holder pocket center footpath measuring method, set up a measuring device, measuring device comprises round platform, first step, second step and cylinder, be equipped with first step and second step on cylindrical lateral surface, be equipped with the round platform on the face of cylindrical top, the middle part of cylinder and round platform all is equipped with the lightening hole, the lightening hole on the round platform is linked together with the lightening hole on the cylinder, be equipped with the tool withdrawal groove on the internal contact surface of first step and second step and cylinder junction, in the measuring:
Firstly, manufacturing a cylinder and a circular table according to a pocket on a retainer, arranging a first step and a second step on the cylinder, arranging the circular table on the top of the cylinder, and arranging lightening holes in the central parts of the circular table and the cylinder;
further, the round table and the cylinder are subjected to turning, processing and forming, quenching and low-temperature tempering heat treatment, and the hardness of the round table and the cylinder after the heat treatment is ensured to be HRC60 ~ 65;
Further, a first step and a second step are carried on the slope of the retainer, the steps can enable the angle of the circular truncated cone to be consistent with the inclination angle of the pockets, the machined cylinder and the circular truncated cone are placed in the two pockets with the longest chord length of the circumference of the thrust angular contact ball bearing retainer, the waist of the circular truncated cone is perpendicular to the end face of the retainer, and the contact mode of the end face of the bottom of the first step and the end face of the bottom of the second step and the slope face of the retainer is a linear contact tool withdrawal groove, so that the bottom faces of the two steps are in close contact with the slope face. The pocket is in clearance fit with the cylinder, a first step and a second step on the cylinder are supported on the slope surface of the retainer, then the maximum distance between the waist parts of the two circular truncated cones is measured by a vernier caliper, namely, the measured value of the central diameter Dc1p, the diameter of the top surface of the circular truncated cone is Dc, the included angle between the central line of the pocket and the central line of the retainer is a, the distance between the top surface of the circular truncated cone and the bottom surface of the step is hc, the linear distance between the centers of the step contact surfaces of the two circular truncated cones is Dcp (namely, the designed central diameter of the pocket of the retainer) and when the actual value is measured, when the number of the pockets is an even number, the calculation method for: dc1p =2cos α × (Dc/2 + hc × tan α) + Dcp; when the number of the pockets is odd-numbered, the method for calculating the circumscribed circle of the center diameter of the process requirement is Dc1p =2cos alphax (Dc/2 + hc × tan alpha) + Dcp × cos (90 °/n);
and further, comparing the measured value of the central diameter with an actual value required by the process, wherein the product with the actual value in the range of the measured value of the central diameter is a qualified product.
the first step and the second step are arranged on the upper part of the outer side surface of the cylinder in a symmetrical structure by taking the cylinder as a center, and the bottoms of the first step and the second step are positioned in the same plane.
The inner connecting surfaces of the first step and the second step are of arc structures, the radius of the arc structures is the same as that of the cylinder, and tool withdrawal grooves are formed in the bottoms of the inner connecting surfaces of the first step and the second step.
The outer joint surfaces of the first step and the second step are a combination of a rectangle and an arc.
The lightening holes are of cylindrical structures and are arranged at the central parts of the circular truncated cone and the cylinder.
The tool withdrawal groove is of a groove-shaped structure, and the cross section of the tool withdrawal groove is of a three-quarter circular structure.
The cylinder and the circular truncated cone are made of bearing steel GCro 15.
The hardness of the whole measuring device after heat treatment is HRC 63.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
According to the invention, the first step and the second step are arranged on the cylinder of the measuring device, the circular truncated cone is arranged on the top surface of the cylinder, and the weight-reducing holes are arranged in the middle of the cylinder and the circular truncated cone, so that the purposes of improving the stability and accuracy of measuring the central diameter of the pocket of the angular contact thrust ball bearing retainer are achieved; the device has the advantages of strong practicability, very convenient use and very simple structure, improves the accuracy of measuring the central diameter of the pocket of the thrust angular contact ball bearing retainer, improves the stability of measuring the central diameter of the pocket of the thrust angular contact ball bearing retainer, and provides inspection guarantee for the mass production of products, thereby further avoiding errors and being greatly beneficial to the development of enterprises.
Drawings
FIG. 1 is a schematic perspective view of a measuring device according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic perspective view of a second step of the measuring device;
FIG. 4 is a schematic cross-sectional view of the measuring apparatus;
FIG. 5 is a schematic view of a thrust angular contact ball bearing cage;
FIG. 6 is a schematic view of a method for measuring the center diameter of a pocket of a thrust angular contact ball bearing cage;
In the figure: 1. lightening holes; 2. a circular truncated cone; 3. a first step; 4. a cylinder; 5. a second step; 6. an inner junction surface; 7. a tool withdrawal groove; 8. an outer junction surface; 9. a holder; 10. and (6) a pocket.
Detailed Description
The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.
the method for measuring the central diameter of the pocket hole of the thrust angular contact ball bearing retainer is described by combining the attached drawing 1 ~ 6, a measuring device is arranged, the measuring device is composed of a circular table 2, a first step 3, a second step 5 and a cylinder 4, a pocket hole 10 is arranged on a retainer 9, the first step 3 and the second step 5 are arranged on the outer side surface of the cylinder 4, the circular table 2 is arranged on the top surface of the cylinder 4, weight reducing holes 1 are arranged in the middle of the cylinder 4 and the circular table 2, the weight reducing holes 1 on the circular table 2 are communicated with the weight reducing holes 1 on the cylinder 4, a tool withdrawal groove 7 is arranged on the inner connecting surface 6 of the connecting part of the first step 3 and the second step 5 with the cylinder 4, and when in measurement:
Firstly, manufacturing a cylinder 4 according to a pocket 10 on a retainer 9, arranging a first step 3 and a second step 5 on the cylinder 4, arranging a circular truncated cone 2 at the top of the cylinder 4, and arranging lightening holes 1 at the central parts of the circular truncated cone 2 and the cylinder 4;
Further, the round table 2 and the cylinder 4 are subjected to quenching and low-temperature tempering heat treatment after turning, and the hardness of the round table and the cylinder after heat treatment is ensured to be HRC60 ~ 65;
further, a first step 3 and a second step 5 are carried on the slope of the retainer 9, the steps can enable the angle of the circular truncated cone 2 to be consistent with the inclination angle of the pockets 10, the machined cylinder 4 and the circular truncated cone 2 are placed in the two pockets 10 with the longest chord length of the circumference of the thrust angular contact ball bearing retainer 9, the waist of the circular truncated cone 2 is perpendicular to the end face of the retainer 9, the contact mode of the bottom end faces of the first step 3 and the second step 5 and the slope face of the retainer 9 is line contact, the pockets 10 are in clearance fit with the cylinder 4, the first step 3 and the second step 5 on the cylinder 4 are carried on the slope face of the retainer 9, then a vernier caliper is used for measuring the maximum distance between the waist of the two circular truncated cones 2, namely a measured value Dc1p of the center diameter, the diameter of the top face of the circular truncated cone 2 is Dc, the included angle between the center line of the pockets and the center line of the retainer is a, and the, when the linear distance between the centers of the step contact surfaces of the two circular truncated cones 2 is Dcp (namely the designed central diameter of the cage pockets) and the actual value is measured, and the number of the pockets is even, the method for calculating the circumscribed circle of the central diameter required by the process is as follows: dc1p =2cos α × (Dc/2 + hc × tan α) + Dcp; when the number of the pockets is odd-numbered, the method for calculating the circumscribed circle of the center diameter of the process requirement is Dc1p =2cos alphax (Dc/2 + hc × tan alpha) + Dcp × cos (90 °/n);
And further, comparing the measured value of the central diameter with an actual value required by the process, wherein the product with the actual value in the range of the measured value of the central diameter is a qualified product.
The first step 3 and the second step 5 are arranged on the upper part of the outer side surface of the cylinder 4 in a symmetrical structure by taking the cylinder 4 as a center, and the bottoms of the first step 3 and the second step 5 are positioned in the same plane.
the inner connecting surfaces 6 of the first step 3 and the second step 5 are of arc-shaped structures, and tool withdrawal grooves 7 are formed in the bottoms of the inner connecting surfaces 6 of the first step 3 and the second step 5.
And the external connection surfaces 8 of the first step 3 and the second step 5 are in rectangular or arc structures.
The lightening hole 1 is cylindrical, and the lightening hole 1 is arranged at the central parts of the circular truncated cone 2 and the cylinder 4.
The tool withdrawal groove 7 is of a groove-shaped structure, and the cross section of the tool withdrawal groove 7 is of a three-quarter circular structure.
The cylinder 4 and the circular truncated cone 2 are made of bearing steel GCro 15.
The hardness of the round table 2 and the cylinder 4 after heat treatment is HRC 63.
in embodiment 1, with reference to fig. 1 ~, in a method for measuring the central diameter of a pocket of a cage of a thrust angular contact ball bearing according to the present invention, when the method is used, a cylinder 4 is first manufactured according to a pocket 10 on a cage 9, a first step 3 and a second step 5 are arranged on the cylinder 4, a circular truncated cone 2 is arranged at the top of the cylinder 4, and a weight-reducing hole 1 is arranged at the center of the circular truncated cone 2 and the cylinder 4, so as to reduce the weight of the measuring device, the cylinder and the circular truncated cone are made of bearing steel GCro15, and are subjected to turning, forming, quenching and low-temperature tempering heat treatment, after the heat treatment, the hardness is ensured between HRC60 ~, all outer surfaces need to be machined to ensure the surface roughness of the measuring tool, in order to ensure that the first step 3 and the second step 5 of the measuring device can be stably supported on the cage 9, while the tool withdrawal groove 7 is designed, so that the angle of the circular truncated cone 2 can be consistent with the inclination angle of the pocket 10, so that the angle of the circular truncated cone 2 is consistent with the inclination angle of the pocket 10, the circular truncated cone 4, the end surface of the cage is perpendicular to the cage 9, and the vernier caliper 35 is used for measuring the distance between the cylindrical cage 3 and the cylindrical cage for measuring device, and the cylindrical cage for.
Embodiment 2, with reference to fig. 4 ~ 6, the method for measuring the center diameter of the pocket of the angular contact thrust ball bearing cage according to the present invention is implemented, wherein in the actual value measurement, when the number of the pockets is even, the method for calculating the circumcircle of the center diameter required by the process is 2cos α × (dc/2 + hc × tan α) + Dcp, and when the number of the pockets is odd, the method for calculating the circumcircle of the center diameter required by the process is 2cos α × (dc/2 + hc × tan α) + Dcp × cos (90 °/n);
with reference to fig. 5 and 6, the relevant dimensions of a cage pocket of a thrust angular contact ball bearing are shown in fig. 5, the dimensions of a measuring column part are shown in fig. 6, and when measuring:
the method comprises the following steps: the center diameter measurement Dc1p was calculated to be theoretical =2cos α × (Dc/2 + hc × tan α) + Dcp =2 × cos14 ° (70.5 ÷ 2+21 × tan14 °) =997.49mm, with the tolerances given as ± 0.13mm as per the drawing requirements.
Step two: placing the cylinders 4 of the manufactured measuring device in two pockets 10 with the longest circumferential chord length of a thrust angular contact ball bearing retainer 9, and enabling bottom surfaces of the first step 3 and the second step 5 to form line contact with a slope surface of the retainer 9;
step three: measuring the maximum distance between the waist parts of the two circular truncated cones 2 by using a vernier caliper, namely measuring the actual value of the central diameter Dc1p, wherein the outer measuring claw of the vernier caliper is in line contact with the waist parts of the circular truncated cones 2;
step four: and comparing the actual value of Dc1p with the theoretical value of Dc1p, wherein the actual value is in the range of the theoretical value, and the product is qualified.
while the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a thrust angular contact ball bearing holder pocket center footpath measuring method, includes measuring tool and holder, and measuring tool comprises round platform, first step, second step and cylinder, is equipped with pocket hole, characterized by on the holder: be equipped with first step and second step on cylindrical lateral surface, be equipped with the round platform on the face of cylindrical top, the middle part of cylinder and round platform all is equipped with the lightening hole, and the lightening hole on the round platform is linked together with the lightening hole on the cylinder, is equipped with out-of-the-way groove on the internal contact of first step and second step and cylinder junction, in the measuring:
Firstly, manufacturing a cylinder and a circular table according to a pocket on a retainer, arranging a first step and a second step on the cylinder, arranging the circular table on the top of the cylinder, and arranging lightening holes in the central parts of the circular table and the cylinder;
further, the round table and the cylinder are subjected to turning, processing and forming, quenching and low-temperature tempering heat treatment, and the hardness of the round table and the cylinder after the heat treatment is ensured to be HRC60 ~ 65;
Further, a first step and a second step are carried on a pocket of the retainer, a tool withdrawal groove can enable the angle of the circular truncated cone to be consistent with the inclination angle of the pocket, a processed cylinder and the circular truncated cone are placed in two pockets with the longest chord length of the circumference of the thrust angular contact ball bearing retainer, the waist of the circular truncated cone is perpendicular to the end face of the retainer, the contact mode of the bottom end faces of the first step and the second step and the slope face of the retainer is line contact, the pocket is in clearance fit with the cylinder, the first step and the second step on the cylinder are carried on the slope face of the retainer, then the maximum distance between the waist of the two circular truncated cones, namely a center diameter measurement value Dc1p, the diameter of the top face of the circular truncated cone is Dc, the included angle between the vertical lines of the circular truncated cone and the end face of the retainer is a, the distance between the top face of the circular truncated cone and the bottom face of the step is hc, and when the actual value is measured and the number of the pockets is even, the method for calculating the circumscribed circle of the center diameter of the process requirement is as follows: dc1p =2cos α × (Dc/2 + hc × tan α) + Dcp; when the number of the pockets is odd-numbered, the method for calculating the circumscribed circle of the center diameter of the process requirement is Dc1p =2cos alphax (Dc/2 + hc × tan alpha) + Dcp × cos (90 °/n);
and further, comparing the measured value of the central diameter with the actual value of the process requirement, wherein the product with the actual value in the range of the measured value of the central diameter is a qualified product, the first step and the second step are symmetrically arranged on the upper part of the outer side surface of the cylinder by taking the cylinder as the center, the bottoms of the first step and the second step are positioned in the same plane, the inner joint surfaces of the first step and the second step are of arc structures, and the bottoms of the inner joint surfaces of the first step and the second step are provided with tool withdrawal grooves.
2. The method as claimed in claim 1, wherein the step of measuring the center diameter of the cage pocket of the angular contact thrust ball bearing comprises the steps of: the outer joint surfaces of the first step and the second step are of rectangular or arc structures.
3. The method as claimed in claim 1, wherein the step of measuring the center diameter of the cage pocket of the angular contact thrust ball bearing comprises the steps of: the lightening holes are of cylindrical or prismatic structures and are arranged at the central parts of the round platforms and the cylinders.
4. the method as claimed in claim 1, wherein the step of measuring the center diameter of the cage pocket of the angular contact thrust ball bearing comprises the steps of: the tool withdrawal groove is of a groove-shaped structure, and the cross section of the tool withdrawal groove is of a three-quarter circular structure.
5. the method as claimed in claim 1, wherein the step of measuring the center diameter of the cage pocket of the angular contact thrust ball bearing comprises the steps of: the cylinder and the circular truncated cone are made of bearing steel GCro 15.
6. The method as claimed in claim 1, wherein the step of measuring the center diameter of the cage pocket of the angular contact thrust ball bearing comprises the steps of: the hardness of the round table and the cylinder after heat treatment is HRC 63.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710020682.6A CN106767298B (en) | 2017-01-12 | 2017-01-12 | method for measuring central diameter of pocket of thrust angular contact ball bearing retainer |
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| CN201710020682.6A CN106767298B (en) | 2017-01-12 | 2017-01-12 | method for measuring central diameter of pocket of thrust angular contact ball bearing retainer |
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| CN106767298A CN106767298A (en) | 2017-05-31 |
| CN106767298B true CN106767298B (en) | 2019-12-10 |
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Families Citing this family (2)
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| CN107356180B (en) * | 2017-07-27 | 2020-01-21 | 洛阳Lyc轴承有限公司 | Method for measuring pocket hole of self-aligning thrust roller bearing cage |
| CN109596026B (en) * | 2018-11-30 | 2020-09-22 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Bearing cage pocket detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101071056A (en) * | 2007-04-16 | 2007-11-14 | 西北轴承股份有限公司 | Spherical roller bearing solid cage center-diameter and angle measuring method |
| JP5171243B2 (en) * | 2007-12-25 | 2013-03-27 | 株式会社ブリヂストン | Mounting hole inspection tool and inspection method |
| CN102109314A (en) * | 2010-12-21 | 2011-06-29 | 洛阳轴研科技股份有限公司 | Method for measuring central distance of odd number of cylindrical cage pockets |
| CN102410797A (en) * | 2011-07-22 | 2012-04-11 | 江苏帝达贝轴承有限公司 | Verification plug of solid retainer of aligning roller bearing |
| CN107246442B (en) * | 2013-04-04 | 2019-10-25 | 日本精工株式会社 | Tapered roller bearing resin retainer and with the tapered roller bearing of the retainer |
| CN103245271B (en) * | 2013-04-16 | 2015-08-12 | 洛阳轴承研究所有限公司 | A kind of retainer pocket hole is the two symmetrical pocket hole center-diameter size detecting methods on inclined-plane |
| CN105783657A (en) * | 2016-03-18 | 2016-07-20 | 洛阳Lyc轴承有限公司 | Spherical roller bearing solid cage pocket detection method |
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Effective date of registration: 20201130 Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: LUOYANG LYC BEARING Co.,Ltd. Patentee after: Luoyang LYC Automobile Bearing Technology Co.,Ltd. Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. |
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Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: Luoyang Bearing Group Co.,Ltd. Country or region after: China Patentee after: Luoyang LYC Automobile Bearing Technology Co.,Ltd. Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. Country or region before: China Patentee before: Luoyang LYC Automobile Bearing Technology Co.,Ltd. |
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