CN111002113A - Bearing outer ring groove slope grinding process method - Google Patents
Bearing outer ring groove slope grinding process method Download PDFInfo
- Publication number
- CN111002113A CN111002113A CN201911384142.1A CN201911384142A CN111002113A CN 111002113 A CN111002113 A CN 111002113A CN 201911384142 A CN201911384142 A CN 201911384142A CN 111002113 A CN111002113 A CN 111002113A
- Authority
- CN
- China
- Prior art keywords
- grinding
- bearing
- groove
- outer ring
- grinding wheel
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/12—Dressing tools; Holders therefor
- B24B53/14—Dressing tools equipped with rotary rollers or cutters; Holders therefor
Abstract
The invention discloses a bearing outer ring groove slope grinding process method, relates to a bearing outer ring groove slope grinding method, and aims to solve the problem that the existing bearing outer groove grinding method is difficult to ensure the groove slope process precision. The grinding method comprises the following steps: firstly, dressing a grinding wheel by adopting a roller dresser, wherein the outer contour of the dressed grinding wheel is smoothly connected by a horizontal straight line section and an arc section to obtain a dressed grinding wheel; secondly, grinding: on a numerical control micro bearing outer ring groove grinding machine, controlling the rotating speed of a bearing ring to be 450-550 rpm, grinding a straight slope of the bearing ring by a horizontal straight line section of a finishing grinding wheel, and grinding a half groove of the bearing ring by an arc section of the finishing grinding wheel to obtain a ground bearing ring; and thirdly, using oilstone to perform rough grinding and then fine grinding to finish grinding of the groove slope of the outer ring of the bearing. According to the invention, the groove slope can be ground once by finishing the outer contour shape of the grinding wheel, and the accurate control of the groove slope shape of the bearing outer ring is realized.
Description
Technical Field
The invention relates to a groove slope grinding method of a bearing outer ring.
Background
The outer groove of the miniature thrust angular contact ball bearing is generally of a half-groove and straight-slope structure, and the mutual position interrelation of the diameter of the slope top and the diameter of the groove bottom determines the rotation and assembly precision of the bearing, so that the size difference and the action tolerance of the diameter of the slope top and the diameter of the groove bottom are important links for ensuring the product precision.
The existing grinding process method is to use a special bearing outer groove grinding machine to grind a groove and then axially move a workpiece shaft to grind a straight slope part. However, because the method positions the bearing by the outer diameter and the end face of the bearing by the spring chuck, the positioning precision of the positioning method is low, and the requirement on the processing skill of an operator is very high. Therefore, the installation positioning precision of the bearing ring and the axial moving speed and precision of the workpiece shaft directly influence the interrelation and geometric precision of the groove and the slope, and the axial feeding and the radial feeding of the processing method are both manual operations, which directly influences the consistency of the bearing ring channel.
Disclosure of Invention
The invention aims to solve the problem that the process precision of a groove slope is difficult to ensure by the existing method for grinding the outer groove of the bearing, and provides a bearing outer ring groove slope grinding process method.
The bearing outer ring groove slope grinding process method is realized according to the following steps:
firstly, a roller dresser is adopted to dress a grinding wheel, and the outer contour of the dressed grinding wheel is formed by smoothly connecting a horizontal straight line section and an arc section to obtain a dressed grinding wheel;
secondly, grinding: on a numerical control micro bearing outer ring groove grinding machine, positioning a processed bearing ring through a pressure rotor, controlling the rotating speed of the bearing ring to be 450-550 rpm, enabling the rotating directions of the processed bearing ring and a finishing grinding wheel to be opposite, grinding a straight slope of the processed bearing ring through a horizontal straight line segment of the finishing grinding wheel, grinding a half groove of the processed bearing ring through an arc segment of the finishing grinding wheel, and obtaining a ground bearing ring;
thirdly, finely grinding: setting the rotating speed of the ground bearing ring to be 100-140 rpm, performing rough grinding through oilstone, adjusting the rotating speed of the ground bearing ring to be 180-220 rpm, and continuing to use oilstone for fine grinding to finish grinding of the groove slope of the bearing outer ring.
Because the groove curvature of the outer groove of the miniature thrust angular contact ball bearing is too small, and the distance from the straight slope to the groove bottom is too small, the grinding wheel is difficult to finish by using the traditional interpolation method, the invention can realize the one-time grinding of the groove slope by finishing the outline shape of the grinding wheel, so that the slope is 0.01-0.02 mm lower than the groove, the accuracy of the groove curvature and the fineness of the surface appearance are ensured, the pressure rotor is adopted to ensure the accurate positioning and the stable rotation of the bearing outer ring during grinding, the grinding amount of final grinding is controlled to be 0.02-0.04 mm, the dimensional precision and the geometric precision of the outer ring groove are improved, and a good foundation is provided for fine grinding.
The invention adopts a double-station lapping machine for lapping, improves the dimensional precision and the geometric precision by rough lapping, and improves the surface roughness of the channel by lapping.
The bearing outer ring groove slope grinding process method can realize accurate control of the shape of the bearing outer ring groove slope.
Drawings
FIG. 1 is a schematic structural diagram illustrating a grinding wheel dressing operation performed by a roller dresser in step one of the embodiment;
FIG. 2 is a schematic structural view of a bearing ring ground by a grinding wheel in step two of the embodiment;
FIG. 3 is a schematic structural view of a bearing outer ring groove slope obtained in the embodiment.
Detailed Description
The first embodiment is as follows: the bearing outer ring groove slope grinding process method is implemented according to the following steps:
firstly, a roller dresser 4 is adopted to dress a grinding wheel 1, and the outer contour of the dressed grinding wheel 1 is formed by smoothly connecting a horizontal straight line section 1-1 and an arc section 1-2 to obtain a dressed grinding wheel;
secondly, grinding: on a numerical control micro bearing outer ring groove grinding machine, positioning a processed bearing ring through a pressure rotor, controlling the rotating speed of the bearing ring to be 450-550 rpm, enabling the rotating directions of the processed bearing ring and a finishing grinding wheel to be opposite, grinding a straight slope 2 of the processed bearing ring through a horizontal straight line section 1-1 of the finishing grinding wheel, grinding a half groove 3 of the processed bearing ring through an arc section 1-2 of the finishing grinding wheel, and obtaining a ground bearing ring;
thirdly, finely grinding: setting the rotating speed of the ground bearing ring to be 100-140 rpm, performing rough grinding through oilstone, adjusting the rotating speed of the ground bearing ring to be 180-220 rpm, and continuing to use oilstone for fine grinding to finish grinding of the groove slope of the bearing outer ring.
In the embodiment, a numerical control micro bearing outer ring groove grinder is used, an electric spindle roller dresser is used for forming and dressing a grinding wheel, and then servo control is realized on the axial movement of a grinding wheel shaft and the radial movement of a workpiece shaft through a servo system.
The second embodiment is as follows: the difference between the present embodiment and the first embodiment is that the rotation speed of the roller dresser 4 is controlled to be 60000rpm in the first step.
The third concrete implementation mode: the difference between the first embodiment and the second embodiment is that the curvature of the arc section 1-2 of the grinding wheel 1 in the first step is 0.02-0.05 mm larger than that of the bearing ring half groove 3 to be processed.
The fourth concrete implementation mode: the present embodiment is different from one of the first to third embodiments in that the grinding wheel 1 in the first step is a CBN grinding wheel.
The fifth concrete implementation mode: the difference between the present embodiment and one of the first to fourth embodiments is that the rotation speed of the dressing wheel 1 during the grinding process in the second step is 80000-90000 rpm.
The sixth specific implementation mode: the difference between the present embodiment and one of the first to fifth embodiments is that the grinding amount of the final grinding is controlled to be 0.02 to 0.04mm in the second step.
The seventh embodiment: the difference between this embodiment and one of the first to sixth embodiments is that the oilstone in step three is CBN oilstone.
The specific implementation mode is eight: the present embodiment is different from the first to seventh embodiments in that the rotational speed of the bearing ring after grinding is set to 120rpm in the third step, rough grinding is performed by the oilstone, and then the rotational speed of the bearing ring after grinding is adjusted to 200rpm and finish grinding is continued using the oilstone.
The specific implementation method nine: the present embodiment is different from the first to eighth embodiments in that the frequency of the oilstone swing in the third step is set to 200 times/minute.
Example (b): the bearing outer ring groove slope grinding process method of the embodiment is implemented according to the following steps:
firstly, a roller dresser 4 is adopted to dress a grinding wheel 1, and the outer contour of the dressed grinding wheel 1 is formed by smoothly connecting a horizontal straight line section 1-1 and an arc section 1-2 to obtain a dressed grinding wheel;
secondly, grinding: on a numerical control micro bearing outer ring groove grinding machine, positioning a processed bearing ring through a pressure rotor, controlling the rotating speed of the bearing ring to be 500rpm, enabling the rotating directions of the processed bearing ring and a finishing grinding wheel to be opposite, grinding a straight slope 2 of the processed bearing ring through a horizontal straight line section 1-1 of the finishing grinding wheel, grinding a half groove 3 of the processed bearing ring through an arc section 1-2 of the finishing grinding wheel, controlling the rotating speed of the finishing grinding wheel to be 80000rpm, and controlling the grinding amount of final grinding to be 0.02mm to obtain the ground bearing ring;
thirdly, finely grinding: setting the rotation speed of the ground bearing ring to be 120rpm, performing rough grinding through oilstone, adjusting the rotation speed of the ground bearing ring to be 200rpm, and continuing to perform fine grinding through the oilstone to finish grinding of the groove slope of the bearing outer ring.
The bearing outer ring groove slope grinding process method can effectively eliminate the defects and problems of the existing processing technology, and can meet the requirements of the precision and the service life of the bearing.
A batch of bearing outer ring fine grinding and fine grinding nearly 200 pieces are processed by the bearing outer ring groove slope grinding process method. The geometric accuracy is as follows: the dimensional precision (mm) is 0.01 (the process requirement is 0-0.02 mm); the groove position (mm) is 0.005 (the process requirement is-0.005- +0.035 mm); ovality (mm) is 0.0005 (process requirement is 0-0.001 mm); the slope allowable height (mm) is 0.004 (the process requirement is 0-0.005 mm); the surface roughness (mum) Ra is 0.032 (the process requirement is 0-0.04μm); the waviness (mum) is 0.1 (the process requirement is 0-0.2μm), and the test result completely meets the process requirement.
Claims (8)
1. The bearing outer ring groove slope grinding process method is characterized in that the grinding process is realized according to the following steps:
firstly, a roller dresser (4) is adopted to dress a grinding wheel (1), and the outer contour of the dressed grinding wheel (1) is formed by smoothly connecting a horizontal straight line section (1-1) and an arc section (1-2) to obtain a dressed grinding wheel;
secondly, grinding: on a numerical control micro bearing outer ring groove grinding machine, positioning a processed bearing ring through a pressure rotor, controlling the rotating speed of the processed bearing ring to be 450-550 rpm, enabling the rotating directions of the processed bearing ring and a finishing grinding wheel to be opposite, grinding a straight slope (2) of the processed bearing ring through a horizontal straight line section (1-1) of the finishing grinding wheel, grinding a half groove (3) of the processed bearing ring through an arc section (1-2) of the finishing grinding wheel, and obtaining the ground bearing ring;
thirdly, finely grinding: setting the rotating speed of the ground bearing ring to be 100-140 rpm, performing rough grinding through oilstone, adjusting the rotating speed of the ground bearing ring to be 180-220 rpm, and continuing to use oilstone for fine grinding to finish grinding of the groove slope of the bearing outer ring.
2. The method for grinding a groove slope of a bearing outer ring according to claim 1, wherein the rotation speed of the roller dresser (4) is controlled to be 60000rpm in the first step.
3. The bearing outer ring groove slope grinding process method according to claim 1, characterized in that the curvature of the circular arc section (1-2) of the grinding wheel (1) in the first step is 0.02-0.05 mm larger than the curvature of the bearing ring half groove (3) to be processed.
4. The bearing outer ring groove slope grinding process method according to claim 1, characterized in that the grinding wheel (1) in the first step is a CBN grinding wheel.
5. The bearing outer ring groove slope grinding process method according to claim 1, wherein the rotating speed of the dressing grinding wheel (1) in the grinding process in the step two is 80000-90000 rpm.
6. The method for grinding the groove slope of the bearing outer ring according to claim 1, wherein the grinding amount of the final grinding in the second step is controlled to be 0.02-0.04 mm.
7. The method according to claim 1, wherein said oilstone is CBN oilstone.
8. The method according to claim 1, wherein the rotation speed of the bearing ring after grinding is set to 120rpm in the third step, rough grinding is performed by oilstone, and then the rotation speed of the bearing ring after grinding is adjusted to 200rpm to continue fine grinding by oilstone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911384142.1A CN111002113A (en) | 2019-12-28 | 2019-12-28 | Bearing outer ring groove slope grinding process method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911384142.1A CN111002113A (en) | 2019-12-28 | 2019-12-28 | Bearing outer ring groove slope grinding process method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111002113A true CN111002113A (en) | 2020-04-14 |
Family
ID=70119350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911384142.1A Pending CN111002113A (en) | 2019-12-28 | 2019-12-28 | Bearing outer ring groove slope grinding process method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111002113A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113601273A (en) * | 2021-07-12 | 2021-11-05 | 无锡诚石轴承有限公司 | Excircle fine super-grinding process method of precision micro-motor bearing |
| CN114952435A (en) * | 2022-04-27 | 2022-08-30 | 洛阳轴承研究所有限公司 | Bearing machining control method and method for determining grinding amount |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642164A (en) * | 2012-04-27 | 2012-08-22 | 江苏万达特种轴承有限公司 | Method for forming and grinding cylindrical roll bearing inner ring with single retaining side or with single retaining side and step |
| CN102229112B (en) * | 2011-06-23 | 2012-10-03 | 江苏万达特种轴承有限公司 | Finishing method of grinding wheel for grinding angular contact type bearing channel |
| CN103302575A (en) * | 2013-07-09 | 2013-09-18 | 洛阳精密机床有限公司 | Third-generation grinding method for outer flange of automotive hub ball bearing |
| CN105234750A (en) * | 2015-11-13 | 2016-01-13 | 中航工业哈尔滨轴承有限公司 | Grinding method for bearings with lock points |
| CN205057689U (en) * | 2015-07-29 | 2016-03-02 | 江苏希西维轴承有限公司 | Device of processing bearing ring surface |
| CN107243782A (en) * | 2017-06-21 | 2017-10-13 | 中国航发哈尔滨轴承有限公司 | A kind of nonstandard special-shaped ditch slope bearing ring processing technology |
| CN107414634A (en) * | 2017-09-26 | 2017-12-01 | 江苏万达特种轴承有限公司 | One kind finishing method for grinding |
-
2019
- 2019-12-28 CN CN201911384142.1A patent/CN111002113A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229112B (en) * | 2011-06-23 | 2012-10-03 | 江苏万达特种轴承有限公司 | Finishing method of grinding wheel for grinding angular contact type bearing channel |
| CN102642164A (en) * | 2012-04-27 | 2012-08-22 | 江苏万达特种轴承有限公司 | Method for forming and grinding cylindrical roll bearing inner ring with single retaining side or with single retaining side and step |
| CN103302575A (en) * | 2013-07-09 | 2013-09-18 | 洛阳精密机床有限公司 | Third-generation grinding method for outer flange of automotive hub ball bearing |
| CN205057689U (en) * | 2015-07-29 | 2016-03-02 | 江苏希西维轴承有限公司 | Device of processing bearing ring surface |
| CN105234750A (en) * | 2015-11-13 | 2016-01-13 | 中航工业哈尔滨轴承有限公司 | Grinding method for bearings with lock points |
| CN107243782A (en) * | 2017-06-21 | 2017-10-13 | 中国航发哈尔滨轴承有限公司 | A kind of nonstandard special-shaped ditch slope bearing ring processing technology |
| CN107414634A (en) * | 2017-09-26 | 2017-12-01 | 江苏万达特种轴承有限公司 | One kind finishing method for grinding |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113601273A (en) * | 2021-07-12 | 2021-11-05 | 无锡诚石轴承有限公司 | Excircle fine super-grinding process method of precision micro-motor bearing |
| CN114952435A (en) * | 2022-04-27 | 2022-08-30 | 洛阳轴承研究所有限公司 | Bearing machining control method and method for determining grinding amount |
| CN114952435B (en) * | 2022-04-27 | 2023-08-11 | 洛阳轴承研究所有限公司 | Control method for bearing machining and method for determining grinding quantity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103939477B (en) | Machining method of assembly line of angular contact ball bearing sleeve ring | |
| CN101460281B (en) | Method of grinding bar-shaped workpieces, grinding machine for carrying out the method, and grinding cell in twin arrangement | |
| CN111002113A (en) | Bearing outer ring groove slope grinding process method | |
| JP6917904B2 (en) | A method for completely grinding a shaft-shaped workpiece having a cylindrical section and a deformed section. | |
| CN109746300B (en) | Frustum cylindrical combined thin-wall part die-free spinning method based on spherical spinning wheel | |
| CN105798734A (en) | Polishing device and method for mould free curved surface | |
| JP2008030195A (en) | Grinding device | |
| CN1064291C (en) | Trace forming process and equipment for spherical parts | |
| CN102152193B (en) | Method for grinding superhard mini-hemispheric coupling parts | |
| CN108381399A (en) | A kind of rectilinear hard grinding wheel grinding wheel arc dresser | |
| CN112091778A (en) | Single-point grinding process for bullet type aspheric surface die | |
| CN205465511U (en) | Pneumatic grinding head of grinding roll centre bore on numerically -controlled horizontal lathe | |
| CN112247681B (en) | Method and device for trimming arc-shaped surface of ceramic CBN grinding wheel for grinding ball track | |
| CN104690620B (en) | Method for finishing trench in end face of thrust ball bearing ferrule | |
| CN103302576A (en) | Third-generation grinding method for inner flange of automotive hub ball bearing | |
| CN106078363A (en) | A kind of three-section wave ball race grinding processing method of bearing outer ring | |
| JP4049786B2 (en) | Grinding equipment | |
| CN102248467A (en) | Numerical control polishing method for blade edge plate and blade transitional arc part | |
| CN109794631A (en) | The mirror surface chromium-copper CNC processing technology processed applied to hemisphere or semiellipsoid | |
| CN205415322U (en) | Raceway hydraulic pressure circular arc grinding wheel dresser in accurate sphere of vertical roller mill bed | |
| CN105073341A (en) | Method for truing rotary grindstone and grinding machine for implementing method for truing | |
| KR102034484B1 (en) | Manufacturing method for tapered roller, and tapered roller bearing | |
| CN102756312B (en) | Method for manufacturing high-accuracy rotating shaft by surface grinding machine | |
| CN110340774A (en) | High-precision deep groove ball bearing bear inner ring grooved railway and internal-and external diameter composite grinding device and method | |
| JP3868661B2 (en) | Centerless grinding method and centerless grinding apparatus for spherical workpiece |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200414 |