CN107738069A - High precision machines people's reductor thin-wall bearing method for grinding - Google Patents

High precision machines people's reductor thin-wall bearing method for grinding Download PDF

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Publication number
CN107738069A
CN107738069A CN201710897838.9A CN201710897838A CN107738069A CN 107738069 A CN107738069 A CN 107738069A CN 201710897838 A CN201710897838 A CN 201710897838A CN 107738069 A CN107738069 A CN 107738069A
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CN
China
Prior art keywords
grinding
ring
thin
external diameter
bearing
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CN201710897838.9A
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Chinese (zh)
Inventor
沈立言
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无锡三立轴承股份有限公司
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Priority to CN201710897838.9A priority Critical patent/CN107738069A/en
Publication of CN107738069A publication Critical patent/CN107738069A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23POTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/003Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes

Abstract

The invention discloses high precision machines people's reductor thin-wall bearing method for grinding, the method for grinding includes the workpiece blank that the forging blank of reductor thin-wall bearing is processed into outer ring and inner ring respectively, is characterized in particular in:Including (1) outer ring Vehicle Processing;(2) inner ring Vehicle Processing;(3) outer ring mill processing;(4) inner ring mill processing;(5) inspection process.Change high precision machines people's reductor thin-wall bearing grinding process, improve the precision of part.

Description

High precision machines people's reductor thin-wall bearing method for grinding

Technical field

The present invention relates to machining equipment technical field, more particularly to a kind of high precision machines people reductor thin-wall bearing Method for grinding.

Background technology

By semicentennial development, the direction of modern industry robot, which is developed, tends to lightness, but current from China From the point of view of market, had a long way to go with state's outer bearing in terms of positioning precision, locating speed and the precision conservation degree, and produce this The basic reason of problem be exactly be exactly part precision it is not up to standard.

For the outer ring of high precision machines people's reductor thin-wall bearing, technique too complex and the precision of part before are not Height, it is divided into 2 stages of coarse-fine mill in terms of grinding before, respectively roughly grinds plane, corase grind is cylindrical, roughly grinds raceway groove, roughly grinds rib, Fore shaft, stable processing, finished plane, fine cylindrical, fine grinding raceway groove and fine grinding fore shaft are roughly ground, last raceway groove superfinishing, grinds external diameter eventually, But the required precision of rib is not high, so need not be to the meticulous corase grind of rib.

The content of the invention

To overcome disadvantages mentioned above, it is an object of the invention to provide a kind of grinding of high precision machines people reductor thin-wall bearing Method, change high precision machines people's reductor thin-wall bearing grinding process, improve the precision of part.

In order to reach object above, the technical solution adopted by the present invention is:High precision machines people's reductor thin-wall bearing is ground Cutting method, the method for grinding include the workpiece base that the forging blank of reductor thin-wall bearing is processed into outer ring and inner ring respectively Material, is characterized in particular in:

(1) outer ring Vehicle Processing:External diameter Vehicle Processing-internal diameter Vehicle Processing-both ends of the surface Vehicle Processing-chamfering Vehicle Processing-is at tempering of quenching Reason;

(2) inner ring Vehicle Processing:Rough turn internal diameter, the face of car first-thin in-car external diameter, thin the second face of car-buffing internal-and external diameter-car fall Angle two sides-temper of quenching;

(3) outer ring mill processing:Corase grind plane-corase grind outer ring-corase grind hook lock-stabilization processing-finished plane-lappingout plane- Refine external diameter-essence whole external diameter-fine grinding raceway groove-superfinishing raceway groove-whole flat lapping-external diameter superfinishing-hard car chamfering;

(4) inner ring mill processing:Corase grind plane-corase grind internal diameter-corase grind raceway groove-stabilization processing-finished plane-lappingout plane- Refine raceway groove-fine grinding internal diameter-superfinishing raceway groove-whole flat lapping;

(5) inspection process is:Tested, be processed according to process above requirement, the production cycle using 500 sets of bearings The amplitude of upper lifting is not that qualification rate is also significantly lifted it is obvious that the precision that still bearing reaches has greatly improved.Raceway groove Scattered error can control substantially within 2 μ, while the running accuracy of finished product has greatly improved, and disclosure satisfy that national standard P4 Up to more than 90%.

Further, during the outer ring Vehicle Processing and inner ring Vehicle Processing, respectively according to the dimensional tolerance of workpiece, morpheme The tolerance central value control processing dimension of tolerance, deviation cannot be greater than 0.01mm, and the allowance of reserved lappingout.

Further, during the outer ring Vehicle Processing and inner ring Vehicle Processing, in the mill process of outer ring and inner ring, point Grinding accuracy is not controlled according to the dimensional tolerance of workpiece, the tolerance central value of form and position tolerance, deviation cannot be greater than 0.006mm, and Reserved allowance.

Further, in the outer ring mill process, corase grind plane is cut using bear inner ring grooved railway grinding machine 3MK1310CB Enter mill, it is 0.15mm~0.20mm to make its accuracy rating.

Further, in the outer ring mill process, corase grind hook lock is processed using roller, and the step of fore shaft size one is ground to Position and channel dimensions leave surplus 0.02mm-0.05mm, follow-up fore shaft grinding can be cast out, its production effect can be greatly improved Rate.

Further, in the outer ring mill process, finished plane uses upper M7475 surface grinding machines, utilizes its electromagnetism Sucker holds one end completely, and another side is modified with the end face of emery wheel, and fine grinding workpiece size is scattered 4 μm, oval 2 μm, cone 2 μm of degree, 0.2 μm of surface roughness Ra value is big so as to effectively remove warpage caused by the deformation occurred after its stable processing, Ensure its parallel error simultaneously.

Further, in outer ring mill process, lappingout plane using external diameter incision mill, respectively with fine grinding external diameter and The whole external diameter two procedures of essence, it is 0.10mm~0.15mm to make its accuracy rating.

Further, in the outer ring mill process, fine grinding external diameter determines its ditch position using sample circle, and branch external diameter is ground, then With its raceway groove of diamond pen single-point finishing, its ellipse, circularity, concentricity and ditch pendulum are controlled.

A kind of high precision machines people reductor thin-wall bearing method for grinding provided by the invention, for high precision machines, people subtracts The outer ring of fast machine thin-wall bearing, technique too complex and the precision of part before be not high, because the required precision of rib is not high, The step car of rib one is now changed into its method for grinding simultaneously in place by Vehicle Processing and is changed to technique to roughly grind plane, roughly grinds outer ring, Ditch lock is roughly ground, stable processing, finished plane, lappingout plane, external diameter is refined, the whole external diameter of essence, refines raceway groove, superfinishing raceway groove, grind eventually Plane, external diameter superfinishing, hard car chamfering.

Embodiment

Presently preferred embodiments of the present invention is described in detail below so that advantages and features of the invention can be easier to by It will be appreciated by those skilled in the art that apparent clearly defined so as to be made to protection scope of the present invention.

High precision machines people's reductor thin-wall bearing method for grinding in the present embodiment, method for grinding include reductor is thin The forging blank of wall bearing is processed into the workpiece blank of outer ring and inner ring respectively, is characterized in particular in:

(1) outer ring Vehicle Processing:External diameter Vehicle Processing-internal diameter Vehicle Processing-both ends of the surface Vehicle Processing-chamfering Vehicle Processing-is at tempering of quenching Reason;

(2) inner ring Vehicle Processing:Rough turn internal diameter, the face of car first-thin in-car external diameter, thin the second face of car-buffing internal-and external diameter-car fall Angle two sides-temper of quenching;

(3) outer ring mill processing:Corase grind plane-corase grind outer ring-corase grind hook lock-stabilization processing-finished plane-lappingout plane- Refine external diameter-essence whole external diameter-fine grinding raceway groove-superfinishing raceway groove-whole flat lapping-external diameter superfinishing-hard car chamfering;

(4) inner ring mill processing:Corase grind plane-corase grind internal diameter-corase grind raceway groove-stabilization processing-finished plane-lappingout plane- Refine raceway groove-fine grinding internal diameter-superfinishing raceway groove-whole flat lapping;

(5) inspection process is:Tested, be processed according to process above requirement, the production cycle using 500 sets of bearings The amplitude of upper lifting is not that qualification rate is also significantly lifted it is obvious that the precision that still bearing reaches has greatly improved.Raceway groove Scattered error can control substantially within 2 μ, while the running accuracy of finished product has greatly improved, and disclosure satisfy that national standard P4 Up to more than 90%.

During outer ring Vehicle Processing and inner ring Vehicle Processing, respectively according in the dimensional tolerance of workpiece, the tolerance of form and position tolerance Center value controls processing dimension, and deviation cannot be greater than 0.01mm, and the allowance of reserved lappingout.

During outer ring Vehicle Processing and inner ring Vehicle Processing, in the mill process of outer ring and inner ring, respectively according to workpiece Dimensional tolerance, the tolerance central value of form and position tolerance control grinding accuracy, deviation cannot be greater than 0.006mm, and reserved allowance.

In the mill process of outer ring, corase grind plane carries out incision mill using bear inner ring grooved railway grinding machine 3MK1310CB, makes its precision Scope is 0.15mm~0.20mm.

In the mill process of outer ring, the step of fore shaft size one is ground to position and channel dimensions by corase grind hook lock using roller processing Surplus 0.02mm-0.05mm is left, follow-up fore shaft grinding can be cast out, its production efficiency can be greatly improved.

In the mill process of outer ring, finished plane uses upper M7475 surface grinding machines, and one is held completely using its magnechuck End, is modified with the end face of emery wheel to another side, and fine grinding workpiece size is scattered 4 μm, oval 2 μm, 2 μm of taper, rough surface 0.2 μm of Ra values are spent, it is big so as to effectively remove warpage caused by the deformation occurred after its stable processing, while ensure that its is parallel Difference.

In the mill process of outer ring, lappingout plane is using external diameter incision mill, respectively with fine grinding external diameter and the whole external diameter twice of essence Process, it is 0.10mm~0.15mm to make its accuracy rating.

In the mill process of outer ring, fine grinding external diameter determines its ditch position, branch external diameter mill using sample circle, then is repaiied with diamond pen single-point Its whole raceway groove, control its ellipse, circularity, concentricity and ditch pendulum.

A kind of high precision machines people reductor thin-wall bearing method for grinding that the present invention uses, including corase grind stage and fine grinding Stage, wherein:

The corase grind stage

First on original rough grinding process, equally roughly ground using vertical grinding machine with double end faces surface grinding machine M7675, remove its change Shape, control parallel error;Next, not being in the mood for outer ring grinding machine using M1083 before, workpiece is supported using work support, passes through adjustment The rotation of wheel control workpiece, is ground with abrasive grinding wheel, effectively controls it oval, and taper is outer vertical, circularity, roughness Equally accurate.But in practical operation, because the wall of the bearing is thin, centerless grinder is easily difficult during artificial push, it is easy to makes Into danger, so being changed to bear inner ring grooved railway grinding machine 3MK1310CB carries out incision mill, ensure its precision;Finally processed using roller, it Preceding is all to use single-point finishing, but required precision is not necessary to reach very accurate in terms of corase grind, can be big using roller processing Improve its production efficiency greatly, while what is uniquely ensured in terms of fore shaft is exactly its hold depth, so when roughly grinding ditch and locking, using roller, The step of fore shaft size one is ground to position and channel dimensions leave surplus, follow-up fore shaft grinding can be cast out.

Refining stage

, it is necessary to which stable processing, improves its rigidity after the corase grind stage terminates.By experiment, because high precision machines people is slowed down The collar wall of machine thin-wall bearing is thin, can be deformed upon after stable processing, and warpage is big, so according to the production of reality, needs in next step Upper M7475 surface grinding machines, one end is held completely using its magnechuck, another side is modified with the end face of emery wheel, from And its warpage is effectively removed, while ensure its parallel error.Next carry out flat surpassing that further to reduce its parallel using M84100 Difference, reach expected index.Subsequently cut and ground with external diameter again, respectively with fine grinding external diameter and the whole procedure of external diameter 2 of essence, it is ensured that its essence Degree.Its ditch position is determined using sample circle, branch external diameter mill, with its raceway groove of diamond pen single-point finishing, controls its oval, circularity, with one heart Degree and its ditch pendulum.While precision reaches, it is ensured that the finish on its surface, using superfinishing raceway groove, whole flat lapping, external diameter superfinishing is come Control.Due to a series of chamfering for processing the small end face for causing outer ring, easily mill does not have, if chamfering is amplified in Vehicle Processing, easily leads Cause last part chamfering level uneven, so using hard car chamfering in final step.

The technical concepts and features of embodiment of above only to illustrate the invention, its object is to allow be familiar with technique People understands present disclosure and is carried out, and it is not intended to limit the scope of the present invention, all according to spirit of the invention The equivalent change or modification that essence is done, it should all cover within the scope of the present invention.

Claims (8)

1. high precision machines people's reductor thin-wall bearing method for grinding, it is characterised in that:The method for grinding is included reductor The forging blank of thin-wall bearing is processed into the workpiece blank of outer ring and inner ring respectively, is characterized in particular in:
(1) outer ring Vehicle Processing:External diameter Vehicle Processing-internal diameter Vehicle Processing-both ends of the surface Vehicle Processing-chamfering Vehicle Processing-temper of quenching;
(2) inner ring Vehicle Processing:Rough turn internal diameter, the face of car first-thin in-car external diameter, thin the second face of car-buffing internal-and external diameter-car chamfering two Face-temper of quenching;
(3) outer ring mill processing:Roughly grind plane-corase grind outer ring-corase grind hook lock-stabilization processing-finished plane-lappingout plane-fine grinding The whole external diameter of external diameter-essence-fine grinding raceway groove-superfinishing raceway groove-whole flat lapping-external diameter superfinishing-hard car chamfering;
(4) inner ring mill processing:Roughly grind plane-corase grind internal diameter-corase grind raceway groove-stabilization processing-finished plane-lappingout plane-fine grinding Raceway groove-fine grinding internal diameter-superfinishing raceway groove-whole flat lapping.
2. high precision machines people reductor thin-wall bearing method for grinding according to claim 1, it is characterised in that:It is described outer Enclose during Vehicle Processing and inner ring Vehicle Processing, add respectively according to the dimensional tolerance of workpiece, the control of the tolerance central value of form and position tolerance Chinese musical scale cun, deviation cannot be greater than 0.01mm, and the allowance of reserved lappingout.
3. high precision machines people reductor thin-wall bearing method for grinding according to claim 1, it is characterised in that:It is described outer In the mill process of circle and inner ring, respectively according to the dimensional tolerance of workpiece, the tolerance central value of form and position tolerance control grinding essence Degree, deviation cannot be greater than 0.006mm, and reserved allowance.
4. high precision machines people reductor thin-wall bearing method for grinding according to claim 1, it is characterised in that:It is described outer In circle mill process, corase grind plane carries out incision mill using bear inner ring grooved railway grinding machine 3MK1310CB, makes its accuracy rating be 0.15mm~0.20mm.
5. high precision machines people reductor thin-wall bearing method for grinding according to claim 1, it is characterised in that:It is described outer In circle mill process, the step of fore shaft size one is ground to position and channel dimensions leave surplus by corase grind hook lock using roller processing 0.02mm-0.05mm。
6. high precision machines people reductor thin-wall bearing method for grinding according to claim 1, it is characterised in that:It is described outer In circle mill process, finished plane uses M7475 surface grinding machines, one end is held completely using its magnechuck, with emery wheel End face is modified to another side, and fine grinding workpiece size is scattered 4 μm, oval 2 μm, 2 μm of taper, 0.2 μm of surface roughness Ra value.
7. high precision machines people reductor thin-wall bearing method for grinding according to claim 1, it is characterised in that:It is described outer In circle mill process, lappingout plane, respectively with fine grinding external diameter and the whole external diameter two procedures of essence, makes its essence using external diameter incision mill Degree scope is 0.10mm~0.15mm.
8. high precision machines people reductor thin-wall bearing method for grinding according to claim 1, it is characterised in that:It is described outer In circle mill process, fine grinding external diameter determines its ditch position using sample circle, and branch external diameter is ground, then with its raceway groove of diamond pen single-point finishing, Control its ellipse, circularity, concentricity and ditch pendulum.
CN201710897838.9A 2017-09-28 2017-09-28 High precision machines people's reductor thin-wall bearing method for grinding CN107738069A (en)

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