CN109465679A - A kind of rail traffic high-precision bearing production technology - Google Patents
A kind of rail traffic high-precision bearing production technology Download PDFInfo
- Publication number
- CN109465679A CN109465679A CN201811370896.7A CN201811370896A CN109465679A CN 109465679 A CN109465679 A CN 109465679A CN 201811370896 A CN201811370896 A CN 201811370896A CN 109465679 A CN109465679 A CN 109465679A
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- grinding
- microns
- lasso
- rail traffic
- production technology
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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
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a kind of rail traffic high-precision bearing production technologies, comprising the following steps: receiving inspection, and --- outer/inner circle blank --- --- --- not being in the mood for cylindrical grinding, --- --- outer ring flange is ground (inner ring raceway grinding), and --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- pack --- sampling observation --- and be put in storage and store oil immersion antirust laser marking riveting dress roller sorting trap ultrasonic cleaning the detection of inside/outside diameter inside/outside circle channel superfinishing fine grinding outer circle outer/inner circle cross grinding for finished product cleaning for vibration measuring for radial internal clearance detection for cleaning for outer ring raceway grinding (inner ring rib grinding --- internal diameter grinding) for heat treatment by appearance test.Present invention process is high in machining efficiency, and process is stablized, and processing quality is high, and precision is high.
Description
Technical field
The present invention relates to precision bearing field more particularly to a kind of rail traffic high-precision bearing production technologies.
Background technique
Precision bearing is divided into according to the grade scale of ISO: P0, P6, P5, P4, P2. grade successively increase, and wherein P0 is general
Logical precision, other grades are all accurate ranks.Certainly, different grade scales, different types of bearing, their stage division have
It is different, but meaning is consistent.Required in precision bearing service performance rotary body have high bounce precision, high speed rotation and
It is required that friction and friction variation are small.
In the prior art, precision bearing processing technology is complicated, and processing quality is not high, it is difficult to control, bring very to enterprise
Big cost.
Summary of the invention
The purpose of the present invention is to solve disadvantage existing in the prior art, and a kind of rail traffic proposed is with high-precision
Spend Production of bearing technique.
To achieve the goals above, present invention employs following technical solutions:
A kind of rail traffic high-precision bearing production technology, comprising the following steps:
--- --- --- outer/inner circle cross grinding --- not being in the mood for cylindrical grinding --- is thin for heat treatment for outer/inner circle blank for receiving inspection
Cylindrical grinding --- outer ring flange is ground (inner ring raceway grinding) --- outer ring raceway grinding (inner ring rib grinding --- internal diameter mill
Cut) --- inside/outside circle channel superfinishing --- cleaning --- inside/outside diameter detection --- ultrasonic cleaning --- sorting trap --- dress
Roller --- riveting --- radial internal clearance detection --- vibration measuring --- laser marking --- finished product cleaning --- oil immersion antirust ---
Appearance test --- packaging --- sampling observation --- storage storage.
Preferably, the cross grinding, lasso enter between the abrasive wheel end face of two rotations, the both ends of the surface while quilt of lasso
Grinding, when Double face grinding, surface to be machined is exactly positioning surface, is once ground two end faces, and cross grinding parallel error is controlled 4
Within μm, algebraic difference between adjacent gradients are within 2 μm, and roughness is less than 0.4 μm.The superposition for avoiding position error and mismachining tolerance, is not also deposited
The mismachining tolerance caused by the effect as the not gentle magnetism of electromagnetic worktable, to obtain higher machining accuracy.
Preferably, described not to be in the mood for cylindrical grinding, processed lasso is held through guide plate, is transported from guide wheel to supporting plate direction circumference
It is dynamic, and drive lasso when rotating by not being in the mood for wheel grinding, control precision is that ovality is up to 6 microns, and it is micro- that prismatic roundness is up to 6
Rice, taper are up to 6 microns, and vertical difference is up to 8 microns, and circularity is up to 3 microns, and roughness is up to 0.5 micron.Surface
Quality is higher, and precision is also relatively high, and grinding speed is very fast
Preferably, the outer ring flange grinding is the finishings lasso ribs such as high-speed rotating grinding wheel, the outer ring raceway mill
It cuts and is adsorbed lasso by magnetic force, backer rotates and lasso is driven to rotate.
Preferably, inner ring raceway grinding selects backer, reconditioning backer according to lasso model, allows the end face run-out of backer
Amount is less than 2 microns.Bearing is adjusted, so that workpiece centre is deviateed 0.2-0.3 millimeters of backer's center of rotation, eccentric quadrant is four-quadrant
Limit.
Preferably, the inner ring rib grinding, parallel error is within 5 microns, algebraic difference between adjacent gradients high outer low, range one in being usually
As at 2-6 microns.
Preferably, the mill inner ring internal diameter, electric magnetic no-core clamp by magnetic absorption lasso and drive lasso with (relative to
Grinding wheel speed) lower rotational speed.
Preferably, the mill inner ring internal diameter is divided into corase grinding and fine grinding two procedures, and corase grinding controls ovality in 10 microns,
Taper is less than 8 microns, and Wall-Thickness Difference is less than 8 microns；Fine grinding control ovality is in 6 microns, and for taper less than 5 microns, Wall-Thickness Difference is small
In 5 microns, straightness is at -1 ~ -2 microns, and roughness is less than 0.4 micron.
Compared with prior art, the beneficial effects of the present invention are:
1, of the invention, the superposition of position error and mismachining tolerance is avoided, also there is no by the not gentle magnetism of electromagnetic worktable
Mismachining tolerance caused by effect, to obtain higher machining accuracy.
2, of the invention, electric magnetic no-core clamp is by magnetic absorption lasso and drives lasso with lower rotational speed, grinding wheel
Rubbing action is contacted and generated with lasso with higher revolving speed, and then achievees the purpose that cutting, grinding wheel not only opposite set when grinding
Circle rotation, also does the reciprocating motion perpendicular to ring face, workpiece quality can be improved.
3, of the invention, the technique is high in machining efficiency, and process is stablized, and processing quality is high, and precision is high.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.
A kind of embodiment 1: rail traffic high-precision bearing production technology, comprising the following steps:
--- --- --- outer/inner circle cross grinding --- not being in the mood for cylindrical grinding --- is thin for heat treatment for outer/inner circle blank for receiving inspection
Cylindrical grinding --- outer ring flange is ground (inner ring raceway grinding) --- outer ring raceway grinding (inner ring rib grinding --- internal diameter mill
Cut) --- inside/outside circle channel superfinishing --- cleaning --- inside/outside diameter detection --- ultrasonic cleaning --- sorting trap --- dress
Roller --- riveting --- radial internal clearance detection --- vibration measuring --- laser marking --- finished product cleaning --- oil immersion antirust ---
Appearance test --- packaging --- sampling observation --- storage storage.
The cross grinding, lasso enter between the abrasive wheel end face of two rotations, and the both ends of the surface of lasso are ground simultaneously, double
When cross grinding, surface to be machined is exactly positioning surface, is once ground two end faces, and cross grinding parallel error controls within 4 μm,
Algebraic difference between adjacent gradients are within 2 μm, and roughness is less than 0.4 μm.The superposition of position error and mismachining tolerance is avoided, also there is no by electromagnetism
Mismachining tolerance caused by the effect of the not gentle magnetism of workbench, to obtain higher machining accuracy；It is described not to be in the mood for cylindrical grinding, quilt
The lasso of processing is held through guide plate, from guide wheel to supporting plate direction circular motion, and drives lasso when rotating by not being in the mood for wheel grinding,
Control precision is that ovality is up to 6 microns, and prismatic roundness is up to 6 microns, and taper is up to 6 microns, and it is micro- that vertical difference is up to 8
Rice, circularity are up to 3 microns, and roughness is up to 0.5 micron.Surface quality is higher, and precision is also relatively high, grinding speed
Comparatively fast；The outer ring flange grinding is the finishings lasso ribs such as high-speed rotating grinding wheel, and the outer ring raceway grinding passes through
Magnetic force adsorbs lasso, and backer rotates and lasso is driven to rotate；Inner ring raceway grinding according to lasso model select backer,
Reconditioning backer allows the end face run-out amount of backer less than 2 microns.Bearing is adjusted, workpiece centre is made to deviate backer's center of rotation 0.2-
0.3 millimeter, eccentric quadrant is fourth quadrant；The inner ring rib grinding, parallel error is within 5 microns, in algebraic difference between adjacent gradients are usually
High outer low, range is generally at 2-6 microns；The mill inner ring internal diameter, electric magnetic no-core clamp is by magnetic absorption lasso and drives set
Circle is with lower rotational speed；The mill inner ring internal diameter is divided into corase grinding and fine grinding two procedures, and corase grinding control ovality is micro- 10
In rice, taper is less than 8 microns, and Wall-Thickness Difference is less than 8 microns；Fine grinding control ovality is in 6 microns, and taper is less than 5 microns, wall thickness
Difference is less than 5 microns, and straightness is at -1 ~ -2 microns, and roughness is less than 0.4 micron.
Checkout procedure:
Retainer ware-house-in inspection: a certain amount of sample is extracted according to standard by sampling observation personnel before retainer storage and is tested.It is main
, appearance test want detection project as follows: 1).Stand and retainer lid trap will be first kept, the fit clearance between lid and seat is not
It obtains and is greater than 0.2mm, detected with clearance gauge.Observe its surface with the presence or absence of crackle, scuffing, burr, get rusty, impression, deformation, color difference etc.
Open defect.2), pocket bore dia, pocket hole length, inside/outside diameter size, width, retainer lid thickness, ailhead height vernier caliper
Measurement, the same single project survey position of retainer are no less than at 3, and defective products occur should make a record.3), sundry item is such as
Residual magnetism detection, the detection of cleannes containing filth amount, trap trial assembly detection etc..The size of retainer decide steel ball rotating effect and
Operating accuracy after assembly wants strict control retainer various aspects size thus to keep bearing overall operation progress.
Steel ball ware-house-in inspection: a certain amount of sample is extracted according to standard by sampling observation personnel before roller storage and is tested.It is main
, appearance test want detection project as follows: 1).Observing its surface whether there is scuffing, crackle, pit, group's point, casting skin, abrades, gnaws
The open defects such as hurt, get rusty.2), hardness determination.Every batch of steel ball takes out 2 and detects ball hardness on digital display Rockwell apparatus.
3), burn detection.Whether every batch of steel ball takes out 2 inspection burn projects qualified.4), roughness measurement.Use roughness contourgraph
Check whether roughness meets the requirements.5), sundry item such as metallographic, carbon-coating of shaking off poverty detection, residual magnetism detection, size detection, trap
Trial assembly detection etc..The size of roller decides running accuracy and working gap, vibration noise equally accurate after assembly, wants thus
Strict control steel ball projects keep bearing overall operation progress and service life.
Lasso ware-house-in inspection: a certain amount of sample is extracted according to standard by sampling observation personnel before lasso storage and is tested.It is main
, appearance test want detection project as follows: 1).The appearances such as internal-and external diameter, chamfering, end face, raceway, oil duct, rib internal-and external diameter are observed, no
Allow exist corrosion, casting skin, damage, crackle, without chamfering, without open defects such as channels.2) high size detection, is held.Use height
Measuring instrument G903 and respective standard part make contrasting detection, are checked one by one product, by parallel error or height over range according to
Size is separated, and makes a record.3), outer diameter detection and rib outer diameter and inner ring raceway detection, with standard component according to
Model difference adjustment outer diameter detection (D913, D914, D915) is detected using dial gauge, discovery beyond claimed range according to
Size, ovality, taper size are separated, and are made a record.4), inner diameter measurement and the detection of rib internal diameter and outer ring raceway, with mark
Quasi- part is adjusted outer diameter detection (D923, D924, D915) according to model difference and is detected using dial gauge, and discovery, which exceeds, requires model
That encloses separates according to size, ovality, taper size, and makes a record.5), Internal and external cycle rib detects, and is detected with vernier caliper,
Same plane measurement point is no less than three when detection, separating according to size, parallel error size, and doing easy to remember beyond claimed range
Record.6), sundry item such as oil groove, locking groove bottom diameter, oil groove, stop groove width etc..
The present embodiment, high in machining efficiency, process is stablized, and processing quality is high, and precision is high
A kind of embodiment 2: rail traffic high-precision bearing production technology, comprising the following steps:
--- --- --- outer/inner circle cross grinding --- not being in the mood for cylindrical grinding --- is thin for heat treatment for outer/inner circle blank for receiving inspection
Cylindrical grinding --- outer ring flange is ground (inner ring raceway grinding) --- outer ring raceway grinding (inner ring rib grinding --- internal diameter mill
Cut) --- inside/outside circle channel superfinishing --- cleaning --- inside/outside diameter detection --- ultrasonic cleaning --- sorting trap --- dress
Roller --- riveting --- radial internal clearance detection --- vibration measuring --- laser marking --- finished product cleaning --- oil immersion antirust ---
Appearance test --- packaging --- sampling observation --- storage storage.
The cross grinding, lasso enter between the abrasive wheel end face of two rotations, and the both ends of the surface of lasso are ground simultaneously, double
When cross grinding, surface to be machined is exactly positioning surface, is once ground two end faces, and cross grinding parallel error controls within 4 μm,
Algebraic difference between adjacent gradients are within 2 μm, and roughness is less than 0.4 μm.The superposition of position error and mismachining tolerance is avoided, also there is no by electromagnetism
Mismachining tolerance caused by the effect of the not gentle magnetism of workbench, to obtain higher machining accuracy；It is described not to be in the mood for cylindrical grinding, quilt
The lasso of processing is held through guide plate, from guide wheel to supporting plate direction circular motion, and drives lasso when rotating by not being in the mood for wheel grinding,
Control precision is that ovality is up to 6 microns, and prismatic roundness is up to 6 microns, and taper is up to 6 microns, and it is micro- that vertical difference is up to 8
Rice, circularity are up to 3 microns, and roughness is up to 0.5 micron.Surface quality is higher, and precision is also relatively high, grinding speed
Comparatively fast；The outer ring flange grinding is the finishings lasso ribs such as high-speed rotating grinding wheel, and the outer ring raceway grinding passes through
Magnetic force adsorbs lasso, and backer rotates and lasso is driven to rotate；Inner ring raceway grinding according to lasso model select backer,
Reconditioning backer allows the end face run-out amount of backer less than 2 microns.Bearing is adjusted, workpiece centre is made to deviate backer's center of rotation 0.2-
0.3 millimeter, eccentric quadrant is fourth quadrant；The inner ring rib grinding, parallel error is within 5 microns, in algebraic difference between adjacent gradients are usually
High outer low, range is generally at 2-6 microns；The mill inner ring internal diameter, electric magnetic no-core clamp is by magnetic absorption lasso and drives set
Circle is with lower rotational speed；The mill inner ring internal diameter is divided into corase grinding and fine grinding two procedures, and corase grinding control ovality is micro- 10
In rice, taper is less than 8 microns, and Wall-Thickness Difference is less than 8 microns；Fine grinding control ovality is in 6 microns, and taper is less than 5 microns, wall thickness
Difference is less than 5 microns, and straightness is at -1 ~ -2 microns, and roughness is less than 0.4 micron.
Survey clearance: radial internal clearance refers under certain radial load, when fixing a lasso, makes another lasso in radial direction
Total amount of movement.The clearance measured after radial loaded should be at 29 ~ 38 microns.Radial internal clearance is before trap according to formula
It calculates and obtains, Gr=outer ring raceway diameter-inner ring raceway diameter -2* roller diameter.
Vibration measuring: the vibration noise of total detection bearing, in the case where radial loaded is the load of 150 ~ 300N, decibel value be should be less than
60dB。
Vibration analysis: the abnormal sound main cause occurred in rolling bearing operation process is as follows:
1), bearing internal external raceway is there are bump injury, periodic vibration pulse caused by scuffing or major defect.
2), rolling element surface is there are bump injury, aperiodic vibration pulse caused by scuffing or major defect.
3), since remanent magnetism adsorbs iron powder or impurity dust enters vibratory impulse caused by raceway.
4), the sharp impacts between rolling element and retainer pocket hole.
The present embodiment, electric magnetic no-core clamp is by magnetic absorption lasso and drives lasso with lower rotational speed, grinding wheel
Rubbing action is contacted and generated with lasso with higher revolving speed, and then achievees the purpose that cutting, grinding wheel not only opposite set when grinding
Circle rotation, also does the reciprocating motion perpendicular to ring face, workpiece quality can be improved.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of rail traffic high-precision bearing production technology, which comprises the following steps:
--- --- --- outer/inner circle cross grinding --- not being in the mood for cylindrical grinding --- is thin for heat treatment for outer/inner circle blank for receiving inspection
Cylindrical grinding --- outer ring flange is ground (inner ring raceway grinding) --- outer ring raceway grinding (inner ring rib grinding --- internal diameter mill
Cut) --- inside/outside circle channel superfinishing --- cleaning --- inside/outside diameter detection --- ultrasonic cleaning --- sorting trap --- dress
Roller --- riveting --- radial internal clearance detection --- vibration measuring --- laser marking --- finished product cleaning --- oil immersion antirust ---
Appearance test --- packaging --- sampling observation --- storage storage.
2. a kind of rail traffic high-precision bearing production technology according to claim 1, which is characterized in that the end face
Grinding, lasso enter between the abrasive wheel end face of two rotations, and the both ends of the surface of lasso are ground simultaneously, when Double face grinding, are added
Work surface is exactly positioning surface, once be ground two end faces, cross grinding parallel error control within 4 μm, algebraic difference between adjacent gradients 2 μm with
Interior, roughness is less than 0.4 μm.
3. a kind of rail traffic high-precision bearing production technology according to claim 1, which is characterized in that described not to be in the mood for
Cylindrical grinding, processed lasso are held through guide plate, from guide wheel to supporting plate direction circular motion, and drive lasso when rotating by not being in the mood for
Wheel grinding, control precision are that ovality is up to 6 microns, and prismatic roundness is up to 6 microns, and taper is up to 6 microns, vertical difference
It is up to 8 microns, circularity is up to 3 microns, and roughness is up to 0.5 micron.
4. a kind of rail traffic high-precision bearing production technology according to claim 1, which is characterized in that the outer ring
Lip grinding is the finishings lasso ribs such as high-speed rotating grinding wheel, and the outer ring raceway grinding is adsorbed lasso by magnetic force
Firmly, backer rotates and lasso is driven to rotate.
5. a kind of rail traffic high-precision bearing production technology according to claim 1, which is characterized in that the inner ring
Ball race grinding selects backer, reconditioning backer according to lasso model, allows the end face run-out amount of backer less than 2 microns.
6. adjusting bearing, workpiece centre is set to deviate 0.2-0.3 millimeters of backer's center of rotation, eccentric quadrant is fourth quadrant.
7. a kind of rail traffic high-precision bearing production technology according to claim 1, which is characterized in that the inner ring
Lip grinding, parallel error is within 5 microns, and algebraic difference between adjacent gradients are high outer low in being usually, and range is generally at 2-6 microns.
8. a kind of rail traffic high-precision bearing production technology according to claim 1, which is characterized in that in the mill
Internal diameter is enclosed, electric magnetic no-core clamp is by magnetic absorption lasso and lasso is driven to turn with revolving speed lower (relative to grinding wheel speed)
It is dynamic.
9. a kind of rail traffic high-precision bearing production technology according to claim 1, which is characterized in that in the mill
Circle internal diameter is divided into corase grinding and fine grinding two procedures, and corase grinding control ovality is in 10 microns, and for taper less than 8 microns, Wall-Thickness Difference is small
In 8 microns；Fine grinding control ovality is in 6 microns, and taper is less than 5 microns, and for Wall-Thickness Difference less than 5 microns, straightness is micro- -1 ~ -2
Rice, roughness is less than 0.4 micron.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811370896.7A CN109465679A (en) | 2018-11-18 | 2018-11-18 | A kind of rail traffic high-precision bearing production technology |
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| CN201811370896.7A CN109465679A (en) | 2018-11-18 | 2018-11-18 | A kind of rail traffic high-precision bearing production technology |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109968199A (en) * | 2019-04-22 | 2019-07-05 | 瓦房店远东轴承股份有限公司 | Dissection type self-aligning roller bearing processing technology and its mould used |
| CN111387763A (en) * | 2020-03-20 | 2020-07-10 | 谷小龙 | Display method for highlighting stage creation |
| CN111644570A (en) * | 2019-10-16 | 2020-09-11 | 襄阳振本传动设备有限公司 | Production method of front and rear ring bearing inner rings |
| CN111958329A (en) * | 2020-07-30 | 2020-11-20 | 浙江丰波机电科技有限公司 | Hub unit grinding process applied to high-precision and easy-to-assemble hub unit |
| CN112658875A (en) * | 2020-12-22 | 2021-04-16 | 中国航发哈尔滨轴承有限公司 | Spherical grinding method for centripetal thrust bearing ring with end surface orthodrome |
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| CN105921950A (en) * | 2016-05-31 | 2016-09-07 | 安徽潜山轴承制造有限公司 | Production technology for rolling bearing |
| CN207206013U (en) * | 2017-09-27 | 2018-04-10 | 洛阳汇工轴承科技有限公司 | Built-up shaft bearing ring mill processing electric magnetic no-core clamp |
| CN108044310A (en) * | 2017-11-28 | 2018-05-18 | 余姚市奥祥轴承有限公司 | A kind of manufacture craft of high-speed and high-temperature precision deep groove ball bearing |
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| JPS62136352A (en) * | 1985-12-06 | 1987-06-19 | Amada Co Ltd | Method of machining bearing guide surface |
| JP2012061566A (en) * | 2010-09-16 | 2012-03-29 | Ntn Corp | Workpiece holding device in grinding device and method for manufacturing bearing ring of bearing |
| CN105921950A (en) * | 2016-05-31 | 2016-09-07 | 安徽潜山轴承制造有限公司 | Production technology for rolling bearing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109968199A (en) * | 2019-04-22 | 2019-07-05 | 瓦房店远东轴承股份有限公司 | Dissection type self-aligning roller bearing processing technology and its mould used |
| CN111644570A (en) * | 2019-10-16 | 2020-09-11 | 襄阳振本传动设备有限公司 | Production method of front and rear ring bearing inner rings |
| CN111387763A (en) * | 2020-03-20 | 2020-07-10 | 谷小龙 | Display method for highlighting stage creation |
| CN111958329A (en) * | 2020-07-30 | 2020-11-20 | 浙江丰波机电科技有限公司 | Hub unit grinding process applied to high-precision and easy-to-assemble hub unit |
| CN112658875A (en) * | 2020-12-22 | 2021-04-16 | 中国航发哈尔滨轴承有限公司 | Spherical grinding method for centripetal thrust bearing ring with end surface orthodrome |
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