CN109605177A - A kind of processing technology controlling bearing inside/outside lasso ball race grinding stress - Google Patents
A kind of processing technology controlling bearing inside/outside lasso ball race grinding stress Download PDFInfo
- Publication number
- CN109605177A CN109605177A CN201811510586.0A CN201811510586A CN109605177A CN 109605177 A CN109605177 A CN 109605177A CN 201811510586 A CN201811510586 A CN 201811510586A CN 109605177 A CN109605177 A CN 109605177A
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- China
- Prior art keywords
- grinding
- raceway
- time
- bearing
- stress
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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
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
- B24B19/06—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements for grinding races, e.g. roller races
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The present invention relates to bearing rings to be ground processing technique field, and disclose a kind of processing technology for controlling bearing inner ring ball race grinding stress, include the following steps, roughly grind septal fossula/raceway, wherein grinding wheel finishing frequency is 4 trimmings 1 time at least every, and the linear velocity of grinding is 35~50m/s, and feed speed is 0.002~0.003mm/s, grinding times are at least 3 times, evenly distribute mill amount every time；Fine grinding, eventually mill septal fossula/raceway, wherein grinding wheel finishing frequency is every 1 trimming 1 time, and the linear velocity of grinding is 30~50m/s, and feed speed is 0.001~0.002mm/s, and grinding times are at least 2 times, evenly distribute mill amount every time；First time lappingout septal fossula/raceway, wherein workpiece rotational frequency is 900~2700r/min；Second of lappingout septal fossula/raceway.The processing technology of the control bearing inside/outside lasso ball race grinding stress, can be effectively reduced the dispersion of bearing ring grinding stress and grinding skin, and control grinding stress is distributed shape, improves bearing finished products quality stability.
Description
Technical field
The present invention relates to bearing rings to be ground processing technique field, specially a kind of control bearing inside/outside lasso raceway mill
Cut the processing technology of stress.
Background technique
Bearing is widely used in the every field of the national economic development as Mechanical Fundamentals element.Bearing is typical
Precision machinery product, technical level is the reflection of National Industrial comprehensive technical level, and in national defence, bearing is aviation, boat
It, the crucial auxiliary equipments of all weaponrys such as weapons, naval vessel, nuclear industry.Theoretically, the grinding of bearing collar path
Stress, grinding skin have direct influence to the rolling fatigue life of bearing, and grinding stress, grinding skin control are existed
Certain level can effectively improve the rolling fatigue life of bearing.The grinding stress of bearing collar path why can
The fatigue life for improving bearing is to can reduce the shear stress for being in rolling contact generation because of the stress, and this stress is necessary
It is compression.This is because the fatigue failure of part appears in when bearing excessive tensile stress, when surface has compared with huge pressing stress
When remaining, the tensile stress of same numerical value can be offset, and reduces the practical receiving tensile stress numerical value of steel, fatigue strength can be made
Limiting value increases, and when there is larger tensile stress remaining on surface, can be superimposed and make the practical receiving of steel with the tensile stress load of receiving
Tensile stress significantly increase, even if fatigue strength limit value reduce.Therefore, rolling bearing lasso raceway face compression is controlled,
The fatigue life for improving rolling bearing is of great significance to.
Heat-resisting steel material (S8Cr4Mo4VA) is that China is widely used in bearing mnanufacture common used material, is used for heat-resisting steel making
Bearing be usually used in the special occasions such as high temperature, high speed, heavy duty, such as aircraft bearing, naval vessel bearing.Rolling bearing is generally by outer
Lasso, inside race, rolling element and retainer are constituted；Rolling element is known as ball bearing using steel ball, is known as roller using roller
Bearing.Currently, when being ground the bearing collar path of high-temperature bearing Steel material manufacture, without specially controlling the work of grinding stress
Skill leads to following disadvantage:
(1), the bearing collar path working surface grinding stress random distribution after processing is difficult to control；
(2), bearing collar path working surface grinding stress, grinding skin dispersion are big.
(3), service life dispersion degree is big after forming bearing finished products, and life expectancy is not achieved in split bearing, and a small number of bearings are very
To there is initial failure failure；
(4), bearing finished products overall quality is unstable, and customer satisfaction is low.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, adding the present invention provides a kind of control bearing inside/outside lasso ball race grinding stress
Work technique has the dispersion that bearing ring grinding stress and grinding skin is effectively reduced, and control grinding stress is distributed shape,
The advantages that improving bearing finished products quality stability solves when being ground the bearing collar path of high-temperature bearing Steel material manufacture,
The problem of without the specially technique of control grinding stress.
(2) technical solution
To realize the dispersion that bearing ring is effectively reduced and is ground stress and grinding skin, control grinding stress distribution
Shape improves the purpose of bearing finished products quality stability, the invention provides the following technical scheme: a kind of control bearing inner ring rolls
The processing technology of road grinding stress, includes the following steps,
S1: corase grinding septal fossula/raceway, wherein grinding wheel finishing frequency is 4 trimmings 1 time at least every, and the linear velocity of grinding is 35
~50m/s, feed speed are 0.002~0.003mm/s, and grinding times are at least 3 times, evenly distribute mill amount every time；
S2: fine grinding, eventually mill septal fossula/raceway, wherein grinding wheel finishing frequency is every 1 trimming 1 time, and the linear velocity of grinding is
30~50m/s, feed speed are 0.001~0.002mm/s, and grinding times are at least 2 times, evenly distribute mill amount every time；
S3: first time lappingout septal fossula/raceway, wherein workpiece rotational frequency be 900~2700r/min, hunting frequency be 160~
1500 times/min, swing angle is ± 8 °, and grinding pressure is 0.2~0.4MPa；
S4: second lappingout septal fossula/raceway, wherein workpiece rotational frequency be 900~3000r/min, hunting frequency be 65~
1200 times/min, swing angle is ± 8 °, and grinding pressure is 0.15~0.3MPa；
The total flow wherein ground in the step S3 and S4 is 0.005~0.015mm.
The present invention also provides a kind of processing technologys for controlling raceway of outer ring of bearing grinding stress, include the following steps,
S1: corase grinding outer fissure/raceway, wherein grinding wheel finishing frequency is every 3 and rebuilds 1 time, the linear velocity of grinding is 25~
45m/s, feed speed are 0.002~0.003mm/s, and grinding times are at least 2 times, evenly distribute mill amount every time；
S2: fine grinding, eventually mill outer fissure/raceway, wherein grinding wheel finishing frequency is every 1 trimming 1 time, and the linear velocity of grinding is
25~45m/s, feed speed are 0.001~0.002mm/s, and grinding times are at least 2 times, evenly distribute mill amount every time；
S3: first time lappingout outer fissure/raceway, wherein workpiece rotational frequency be 800~2000r/min, hunting frequency be 170~
1500 times/min, swing angle is ± 11 °, and grinding pressure is 0.2~0.4MPa；
S4: second lappingout outer fissure/raceway, wherein workpiece rotational frequency be 800~2300r/min, hunting frequency be 90~
1200 times/min, swing angle is ± 11 °, and grinding pressure is 0.15~0.3MPa；
The total flow wherein ground in the step S3 and S4 is 0.005~0.015mm.
(3) beneficial effect
Compared with prior art, the present invention provides a kind of processing works for controlling bearing inside/outside lasso ball race grinding stress
Skill, have it is following the utility model has the advantages that
The processing technology of the control bearing inside/outside lasso ball race grinding stress can be with by using the above machined parameters
It realizes:
1., ball race grinding stress dispersion be greatly reduced, during stress distribution for -500Mpa arrive -800Mpa, be distributed the phase
Between range only 300Mpa, and be compression；
2., bearing finished products service life entirely reach desired value, without stress problem cause initial failure failure；
3., the distribution of bearing collar path grinding stress it is controllable；
4., new process utilization improve bearing finished products quality stability, meet customer demand.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment 1
A kind of processing technology controlling bearing inside/outside lasso ball race grinding stress, when the bearing is ball bearing, internally
Lasso uses following machined parameters:
Following machined parameters are used to outer collar:
Embodiment 2
A kind of processing technology controlling bearing inside/outside lasso ball race grinding stress is right when the bearing is roller bearing
Inside race uses following machined parameters:
Following machined parameters are used to outer collar:
In conclusion being had using the major advantage that the above new process is processed:
1., ball race grinding stress dispersion be greatly reduced, during stress distribution for -500Mpa arrive -800Mpa, be distributed the phase
Between range only 300Mpa, and be compression；
2., bearing finished products service life entirely reach desired value, without stress problem cause initial failure failure；
3., the distribution of bearing collar path grinding stress it is controllable；
4., new process utilization improve bearing finished products quality stability, meet customer demand.
It should be noted that the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (2)
1. a kind of processing technology for controlling bearing inner ring ball race grinding stress, it is characterised in that: include the following steps,
S1: corase grinding septal fossula/raceway, wherein grinding wheel finishing frequency be at least every 4 and rebuilds 1 time, the linear velocity of grinding for 35~
50m/s, feed speed are 0.002~0.003mm/s, and grinding times are at least 3 times, evenly distribute mill amount every time；
S2: fine grinding, eventually mill septal fossula/raceway, wherein grinding wheel finishing frequency is every 1 and rebuilds 1 time, the linear velocity of grinding is 30~
50m/s, feed speed are 0.001~0.002mm/s, and grinding times are at least 2 times, evenly distribute mill amount every time；
S3: first time lappingout septal fossula/raceway, wherein workpiece rotational frequency is 900~2700r/min, and hunting frequency is 160~1500
Secondary/min, swing angle are ± 8 °, and grinding pressure is 0.2~0.4MPa；
S4: second lappingout septal fossula/raceway, wherein workpiece rotational frequency be 900~3000r/min, hunting frequency be 65~1200 times/
Min, swing angle are ± 8 °, and grinding pressure is 0.15~0.3MPa；
The total flow wherein ground in the step S3 and S4 is 0.005~0.015mm.
2. a kind of processing technology for controlling raceway of outer ring of bearing grinding stress, it is characterised in that: include the following steps,
S1: corase grinding outer fissure/raceway, wherein grinding wheel finishing frequency is every 3 trimmings 1 time, and the linear velocity of grinding is 25~45m/s,
Feed speed is 0.002~0.003mm/s, and grinding times are at least 2 times, evenly distribute mill amount every time；
S2: fine grinding, eventually mill outer fissure/raceway, wherein grinding wheel finishing frequency is every 1 and rebuilds 1 time, the linear velocity of grinding is 25~
45m/s, feed speed are 0.001~0.002mm/s, and grinding times are at least 2 times, evenly distribute mill amount every time；
S3: first time lappingout outer fissure/raceway, wherein workpiece rotational frequency is 800~2000r/min, and hunting frequency is 170~1500
Secondary/min, swing angle are ± 11 °, and grinding pressure is 0.2~0.4MPa；
S4: second lappingout outer fissure/raceway, wherein workpiece rotational frequency be 800~2300r/min, hunting frequency be 90~1200 times/
Min, swing angle are ± 11 °, and grinding pressure is 0.15~0.3MPa；
The total flow wherein ground in the step S3 and S4 is 0.005~0.015mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811510586.0A CN109605177A (en) | 2018-12-11 | 2018-12-11 | A kind of processing technology controlling bearing inside/outside lasso ball race grinding stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811510586.0A CN109605177A (en) | 2018-12-11 | 2018-12-11 | A kind of processing technology controlling bearing inside/outside lasso ball race grinding stress |
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| CN109605177A true CN109605177A (en) | 2019-04-12 |
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| CN201811510586.0A Withdrawn CN109605177A (en) | 2018-12-11 | 2018-12-11 | A kind of processing technology controlling bearing inside/outside lasso ball race grinding stress |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110877236A (en) * | 2019-12-09 | 2020-03-13 | 中国航发哈尔滨轴承有限公司 | Thrust bearing ring channel lapping processing method |
| CN114029822A (en) * | 2021-11-23 | 2022-02-11 | 中国航发哈尔滨轴承有限公司 | Method for machining finish grinding channel of outer ring of high-precision long-cylinder double-row angular contact ball bearing |
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| CN110877236A (en) * | 2019-12-09 | 2020-03-13 | 中国航发哈尔滨轴承有限公司 | Thrust bearing ring channel lapping processing method |
| CN114029822A (en) * | 2021-11-23 | 2022-02-11 | 中国航发哈尔滨轴承有限公司 | Method for machining finish grinding channel of outer ring of high-precision long-cylinder double-row angular contact ball bearing |
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