CN107030537B - The fine spiral lamination carding process of outer round surface - Google Patents
The fine spiral lamination carding process of outer round surface Download PDFInfo
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- CN107030537B CN107030537B CN201710145625.0A CN201710145625A CN107030537B CN 107030537 B CN107030537 B CN 107030537B CN 201710145625 A CN201710145625 A CN 201710145625A CN 107030537 B CN107030537 B CN 107030537B
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- Prior art keywords
- outer round
- round surface
- grinding wheel
- spiral lamination
- inner race
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Classifications
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- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention discloses a kind of fine spiral lamination carding processes of outer round surface, bearing inner race clamping after grinding will be completed on grinding machine, grinding wheel cylindrical surface is away from bearing inner race outer round surface distance 10um~20um, and grinding wheel is kept not feed, centrifugal force acts on when rotating merely with grinding wheel, so that the uniform inswept bearing inner race outer round surface in the most tip of wheel face sand grains, comb the fine spiral lamination in its surface, to form straight line texture, and the relative velocity of the inswept bearing inner race outer round surface of grinding wheel is 60m/s, and guarantee that bearing inner race outer round surface each point carding times reach 250 cycles or more.The modification of fine spiral lamination is become the texture perpendicular to axis by the present invention, and the presence of fine spiral lamination is avoided to influence bearing service life.
Description
Technical field
The present invention relates to rolling bearing Grinding Technologies, relate generally to a kind of fine spiral shell of change bearing inner race external diameter surface
The treatment process of lira.
Background technique
In grinding, if grinding spindle is rigidly bad or grinding process is improper, spiral lamination can be all generated.Even if
Grinding spindle is rigidly preferable, while grinding process is suitable, in normal high-accuracy Grinding Process, or can be inevitable
Ground generates fine polishing scratch --- the fine spiral lamination with surface axis out of plumb；When either dresser modifies grinding wheel,
The spiral lamination that wheel face is formed is copied to the trace of surface to be machined again.
For non-maintaining type hub-bearing unit, due to often being transported in the dusty or muddy environment to flash
Turn, so requiring sealing performance very high.The study found that if (outer circle) surface that bearing inner race is contacted with sealing ring has spiral shell
Lira, some tiny tempering are possible to pierce Bearing inner along spiral lamination, destroy bearing working surface, and early stage is caused to be lost
Effect.To propose the requirement for eliminating spiral lamination.But since machined surface roughness has reached Ra=0.4um, even more
It is excellent, since in the Grinding Process of workpiece routine, interaction force caused by shear action of the grinding wheel to workpiece leads to work
In an angle, therefore polishing scratch does not have helical angle to be nearly impossible for part and wheel face certainty shape.
Summary of the invention
The technical problems to be solved by the invention reach Ra=0.4um and more preferably outer circle aiming in surface roughness
Surface provides a kind of fine spiral lamination carding process of outer round surface because fine grinding texture is not exclusively vertical with axis of workpiece, will
Fine spiral lamination modification becomes the texture perpendicular to axis.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：The fine spiral lamination carding process of outer round surface,
Bearing inner race clamping after grinding will be completed on grinding machine, grinding wheel cylindrical surface away from bearing inner race outer round surface distance 10um~
20um, and grinding wheel is kept not feed, centrifugal force acts on when rotating merely with grinding wheel, so that the most tip of wheel face sand grains
Uniform inswept bearing inner race outer round surface, combs the fine spiral lamination in its surface, to form straight line texture, and in the inswept bearing of grinding wheel
Enclose outer round surface relative velocity be 60m/s, and guarantee bearing inner race outer round surface each point carding times reach 250 cycles with
On.
Preferably, grinding wheel is modified using the emery wheel cut-in type that width is greater than grinding wheel, to avoid spiral shell is generated on grinding wheel
Lira trace.
Preferably, the granularity of the grinding wheel is less than 100 mesh.
The present invention increases a carding process after bearing inner race completes grinding, even if grinding wheel and bearing inner race outer circle table
There is relative tangential movement in face, but does not form cutting, only as the process for eliminating spiral lamination.During carding process, grinding wheel is used
The most tip of surface sand grains, uniform inswept bearing inner race outer round surface, only touches surface micro-bulge, slowly combs its surface line
Reason, forms it into straight line (section), and the modification of fine spiral lamination is become to the texture perpendicular to axis.
Detailed description of the invention
Present invention will be further described below with reference to the accompanying drawings and specific embodiments：
Fig. 1 is the graph of relation of grinding wheel radial (+) displacement and wheel face linear velocity.
Specific embodiment
The fine spiral lamination carding process of outer round surface of the invention is mainly applied to commercialization for rolling bearing inner ring
Vehicle non-maintaining type hub-bearing unit.
Before using the fine spiral lamination combing of the external circular surfaces of grinding wheel, first using the emery wheel for being wider than grinding wheel, incision
Formula modifies grinding wheel, avoids generating spiral lamination trace on grinding wheel.
The bearing inner race of (size is in place) after being ground is completed, clamping is on grinding machine, and wheel face is away from workpiece surface distance
10um~20um, and grinding wheel is kept not cut, carry out fine spiral lamination carding process processing.During it grinding machine not into
It gives, does not cool down, only use the most tip of wheel face sand grains, uniform inswept workpiece surface only touches surface micro-bulge, slowly
Slowly its surface texture is combed, straight line (section) is formed it into.
When combing spiral lamination, using 100 mesh of granularity or thinner grinding wheel, close to workpiece surface, grinding wheel is inswept workpiece surface
Relative velocity 50m/s-60m/s, and further preferred 60m/s.In this way, passing through grinding wheel graininess, relative distance and relative velocity
Control, guarantee the carding effect of fine spiral lamination.
By rational mechanics it is found that deviateing the quality m of centre of gyration distance R (i) on grinding wheel, when being rotated with angular velocity omega, produce
Raw centrifugal force F=mR (i) ω2, and under the effect of this centrifugal force, the response of displacement, counter-force, stress, strain on grinding wheel structure etc.
It can be by mass matrix [M], damping matrix [C], basic load { F } the equation statement of stiffness coefficient matrix [K] simultaneous：
By finite element analysis, when calculating grinding wheel rotation, due to the effect of centrifugal force, radial (+) displacement of grinding wheel with
The relation curve of wheel face linear velocity is as shown in Figure 1, it was verified that when linear velocity is too low, the displacement of grinding wheel rotation not ten
Point stablize, and when linear velocity is too high, due to factors such as device systems vibrations, it is also possible to cause the fluctuation of grinding wheel swing offset amount compared with
Greatly, when selecting grinding speed as 60m/s, surface anterior displacement amount is 15um or so, more stable.
In addition, combing 250 cycles or more can reach requirement generally for the outer round surface of Ra=0.4um.
Claims (3)
1. the fine spiral lamination carding process of outer round surface, it is characterised in that：Bearing inner race clamping after grinding will be completed in grinding machine
On, grinding wheel cylindrical surface keeps grinding wheel not feed away from bearing inner race outer round surface distance 10um~20um, merely with sand
Centrifugal force acts on when wheel rotation, so that the uniform inswept bearing inner race outer round surface in the most tip of wheel face sand grains, combs its table
The fine spiral lamination in face, to form straight line texture, and the relative velocity of the inswept bearing inner race outer round surface of grinding wheel is 60m/s, and is protected
Card bearing inner race outer round surface each point carding times reach 250 cycles or more.
2. the fine spiral lamination carding process of outer round surface according to claim 1, it is characterised in that：Sand is greater than using width
Grinding wheel is modified to the emery wheel cut-in type of wheel, to avoid spiral lamination trace is generated on grinding wheel.
3. the fine spiral lamination carding process of outer round surface according to claim 1, it is characterised in that：The granularity of the grinding wheel
Less than 100 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145625.0A CN107030537B (en) | 2017-03-13 | 2017-03-13 | The fine spiral lamination carding process of outer round surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145625.0A CN107030537B (en) | 2017-03-13 | 2017-03-13 | The fine spiral lamination carding process of outer round surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107030537A CN107030537A (en) | 2017-08-11 |
| CN107030537B true CN107030537B (en) | 2018-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710145625.0A Active CN107030537B (en) | 2017-03-13 | 2017-03-13 | The fine spiral lamination carding process of outer round surface |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115338701A (en) * | 2022-08-12 | 2022-11-15 | 江苏双环齿轮有限公司 | Processing method for eliminating torsional lines of rotating shaft by external grinding |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076464U (en) * | 1990-10-12 | 1991-05-08 | 能源部西安热工研究所 | Machine for grinding axle hole of steam-turbine rotor |
| CN2091743U (en) * | 1991-05-23 | 1992-01-01 | 席光表 | Burnishing wheel |
| EP0463846B1 (en) * | 1990-06-26 | 1995-06-07 | Ietatsu Ohno | Grinding method and apparatus |
| CN2380350Y (en) * | 1999-07-05 | 2000-05-31 | 章吉芳 | Centrifugal polishing wheel |
| CN1276750A (en) * | 1997-11-03 | 2000-12-13 | Hh专利股份有限公司 | Method for sanding surfaces on items |
| CN2504036Y (en) * | 2001-10-16 | 2002-08-07 | 韩桂旺 | High precision hole grinding machine head |
| CN105014514A (en) * | 2015-07-27 | 2015-11-04 | 洛阳轴研科技股份有限公司 | Method for removing oxide scales in mounting hole of bearing ring |
| CN105437003A (en) * | 2014-09-28 | 2016-03-30 | 朱登河 | Method for polishing metal wire and metal wire polisher |
| KR101713202B1 (en) * | 2009-09-29 | 2017-03-07 | 가부시키가이샤 타이요코키 | Grinding machine |
-
2017
- 2017-03-13 CN CN201710145625.0A patent/CN107030537B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0463846B1 (en) * | 1990-06-26 | 1995-06-07 | Ietatsu Ohno | Grinding method and apparatus |
| CN2076464U (en) * | 1990-10-12 | 1991-05-08 | 能源部西安热工研究所 | Machine for grinding axle hole of steam-turbine rotor |
| CN2091743U (en) * | 1991-05-23 | 1992-01-01 | 席光表 | Burnishing wheel |
| CN1276750A (en) * | 1997-11-03 | 2000-12-13 | Hh专利股份有限公司 | Method for sanding surfaces on items |
| CN2380350Y (en) * | 1999-07-05 | 2000-05-31 | 章吉芳 | Centrifugal polishing wheel |
| CN2504036Y (en) * | 2001-10-16 | 2002-08-07 | 韩桂旺 | High precision hole grinding machine head |
| KR101713202B1 (en) * | 2009-09-29 | 2017-03-07 | 가부시키가이샤 타이요코키 | Grinding machine |
| CN105437003A (en) * | 2014-09-28 | 2016-03-30 | 朱登河 | Method for polishing metal wire and metal wire polisher |
| CN105014514A (en) * | 2015-07-27 | 2015-11-04 | 洛阳轴研科技股份有限公司 | Method for removing oxide scales in mounting hole of bearing ring |
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| Publication number | Publication date |
|---|---|
| CN107030537A (en) | 2017-08-11 |
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