CN101704208A - Efficient grinding/polishing process of high-precision ceramic balls - Google Patents
Efficient grinding/polishing process of high-precision ceramic balls Download PDFInfo
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- CN101704208A CN101704208A CN200910099280A CN200910099280A CN101704208A CN 101704208 A CN101704208 A CN 101704208A CN 200910099280 A CN200910099280 A CN 200910099280A CN 200910099280 A CN200910099280 A CN 200910099280A CN 101704208 A CN101704208 A CN 101704208A
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- 238000000227 grinding Methods 0.000 title claims abstract description 67
- 239000000919 ceramic Substances 0.000 title claims abstract description 35
- 238000007517 polishing process Methods 0.000 title claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 39
- 238000005498 polishing Methods 0.000 claims abstract description 11
- 239000003082 abrasive agent Substances 0.000 claims description 53
- 238000000034 method Methods 0.000 claims description 37
- 239000012530 fluid Substances 0.000 claims description 18
- 239000010687 lubricating oil Substances 0.000 claims description 15
- 229910003460 diamond Inorganic materials 0.000 claims description 14
- 239000010432 diamond Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 11
- 239000000654 additive Substances 0.000 claims description 9
- 230000000996 additive effect Effects 0.000 claims description 9
- 239000002270 dispersing agent Substances 0.000 claims description 9
- 239000003350 kerosene Substances 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910001018 Cast iron Inorganic materials 0.000 claims description 5
- 239000003595 mist Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000003754 machining Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010011376 Crepitations Diseases 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to an efficient grinding/polishing process of high-precision ceramic balls, which comprises the following steps: (1) rough grinding; (2) semi-finish grinding; (3) finish grinding; (4) super-finish grinding; and (5) polishing, wherein a double-disc self-rotating eccentric V-shaped slot grinding machine is adopted in the steps (1)-(2), and a grinding machine with double self-rotating grinding discs is adopted in the steps (3)-(5). In the invention, not only can higher processing accuracy and processing efficiency be realized, but also processing equipment has simple structure, and the manufacturing cost is lower.
Description
Technical field
The present invention relates to a kind of bulb grinding process technique, particularly precise finiss/the polishing process of high-precision ceramic balls in high speed, the high-precision ceramic ball bearing belongs to the spherical part processing technology of high accuracy.
Background technology
High-precise ball is the critical elements in roundness measuring equipment, gyro, bearing and the accurate measurement, and the benchmark of Chang Zuowei accurate measurement, has crucial status in precision equipment and Precision Machining.Particularly in ball bearing, use in a large number, it is the vital part of ball bearing, the precision of bearing ball (spherical deviation, ball diameter variation and surface roughness) directly affects the technical indicators such as kinematic accuracy, noise and life-span of ball bearing, and then influences the performance of equipment, instrument.Compare with traditional bearing steel ball material (GCr15), that advanced ceramics materials such as silicon nitride have is wear-resisting, high temperature resistant, corrosion-resistant, nonmagnetic, low-density (for bearing steel about 40%), the big series of advantages such as (for 1.5 times of bearing steel) of coefficient of thermal expansion little (be bearing steel 25%) and elastic modelling quantity is considered to make the optimal material of bearing ball of working under ramjet, high speed and precision lathe, precision instrument high speed, high accuracy and the particular surroundings.Because advanced ceramics such as silicon nitride belong to hard crisp difficult-to-machine material, the Ceramic Balls blank behind the material sintering mainly adopts the technology of grinding (roughing) → grinding (semifinishing) → polishing (fine finishining) to process.For the grinding/glossing of Ceramic Balls, process adopts free abrasive, under the effect of machinery, chemical effect, Ceramic Balls base surfacing is carried out small removal, to reach the raising dimensional accuracy, improves the purpose of surface integrity.Traditional Ceramic Balls grinding/polishing processing mainly is to carry out on the V-shaped groove milling apparatus of machining steel bearing ball, adopts hard, expensive diamond abrasive as abrasive material, the process-cycle long (finish the ceramic batch ball and need several time-of-weeks).Very long process and expensive diamond abrasive have caused high manufacturing cost, have limited the application of Ceramic Balls.Along with improving constantly of instrument and equipment precision, the machining accuracy of special substance spheroids such as Ceramic Balls is had higher requirement, need to improve working (machining) efficiency and uniformity simultaneously to reduce production costs.
Therefore, for the processing of difficult-to-machine material high-precise balls such as Ceramic Balls, be badly in need of a kind ofly can realizing higher processing precision and working (machining) efficiency to possess the Ceramic Balls grinding/polishing process that processing unit (plant) is simple in structure, manufacturing cost is lower again.
Summary of the invention
In order to overcome the sphericity that prior art bulb grinding process technique exists and working (machining) efficiency is low, the processing uniformity is poor, processing unit (plant) and control complexity, deficiency that cost is high, the invention provides and a kind ofly can realize higher processing precision and working (machining) efficiency, possess high-precision ceramic balls high-efficient grinding/polishing process that processing unit (plant) is simple in structure, manufacturing cost is lower again.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of high-precision ceramic balls high-efficient grinding/polishing process may further comprise the steps:
(1), slightly grind processing, its process conditions are:
Abrasive material: diamond or B
4C or SiC; The granularity of abrasive material: W40～W20; The mass percent of abrasive material in abrasive disk is 20%～80%; Load pressure: 8～15N/ ball; Lapping liquid: water;
(2), half lappingout processing, its process conditions are:
Abrasive material: diamond or B
4C or SiC; The granularity of abrasive material: W20～W10; The mass percent of abrasive material in abrasive disk is 20%～80%; Load pressure: 6～10N/ ball; Lapping liquid: water;
(3), lappingout processing, its process conditions are:
Load pressure: 2～5N/ ball; Abrasive material: diamond or B
4C or SiC; The granularity of abrasive material: W10～W5; The mass percent of abrasive material: 10%～30%; Base fluid: kerosene, the mass percent of base fluid: 60%～80%; Additive is a lubricating oil, the mass percent of lubricating oil: 4%～7%; The mass percent of dispersant: 3%～6%.
(4), super lappingout processing, its process conditions are:
Load pressure: 1～2N/ ball; Abrasive material: diamond or B
4C or SiC; The granularity of abrasive material: W2～W0.5; The mass percent of abrasive material: 10%～25%; Base fluid: kerosene; The mass percent of base fluid: 65%～80%; Additive is a lubricating oil, the mass percent of lubricating oil: 4%～7%; The mass percent of dispersant: 3%～6%.
(5), polishing processing, its process conditions are:
Load pressure: 0.5～1N/ ball; Abrasive material: CeO
2Micro mist; The granularity of abrasive material: 500; The mass percent of abrasive material: 5%～20%; Base fluid: kerosene; The mass percent of base fluid: 70%～85%; Additive is a lubricating oil, the mass percent of lubricating oil: 4%～7%; The mass percent of dispersant: 3%～6%.
As preferred a kind of scheme: adopt double-disk rotation eccentric V shaped groove grinding miller in described step (1)-(2), top lap and following abrasive disk are arranged up and down, described abrasive disk upper surface down has more than three for the V-type groove of placing the ball base at least, described each bar V-type groove is a concentric circles, the described concentrically ringed center of circle overlaps with the center of circle of following abrasive disk, described top lap is eccentric mutually with following abrasive disk, the load pressue device acts on the ball base by top lap, described top lap and following abrasive disk are respectively by motor-driven, and rotating speed makes up: top lap Ω
C: 60～80 (rpm); Following lap speed Ω
B: Ω
B=Ω c.
As preferred another kind of scheme: adopt the double autorotation grinding disc grinder in described step (3)-(5), by the conical surface abradant surface in the abrasive disk inner disc outside and the taper abradant surface that following abrasive disk coils the inboard outward constitute the V-shaped groove structure down, the load pressue device acts on the ball base by top lap, described V-shaped groove structure and top lap constitute three processing contact points of mill ball together, and described top lap, the outer dish of following abrasive disk and the following inner disc that grinds have identical gyroaxis; Dish and following the grinding in the inner disc outside described top lap, following abrasive disk, wherein the rotating shaft of two dishes is respectively by motor-driven, and the rotating speed of two dishes is Ω
BWith Ω c; Rotating speed combination: Ω
C: 40～60rpm; Ω
B: Ω
B=3 Ω
CSin (0.01 π t).
Further, the abrasive disk of described double-disk rotation eccentric V shaped groove grinding miller adopts the fixed abrasive material abrasive disk.
Further again, the abrasive disk of described double autorotation grinding disc grinder adopts the cast iron abrasive disk.
Technical conceive of the present invention is: for improving spheroid crudy, working (machining) efficiency and precision uniformity, the present invention proposes a kind of high-efficiency and precision processing technology, adopt double plate rotation eccentric formula fixed abrasive material lapping mode to carry out roughing and semifinishing, adopt the double autorotation grinding disc lapping mode to carry out fine finishining, microstoning and polishing.The abrasive disk of double plate rotation eccentric formula lapping mode can be offered the multiple tracks concentric circles and grind groove, therefore, a ball load is greater than the double autorotation grinding disc precise sphere grinder, and in conjunction with the fixed abrasive material abrasive disk, whole working (machining) efficiency is better than the double autorotation grinding disc precise sphere grinder.But, be under the eccentric balling-up mode, spheroid can not form stable contacting all the time with top lap, can influence the precision uniformity of spheroid to a certain extent.Therefore, generally adopt double-disk rotation eccentric V shaped groove grinding miller as its preceding working procedure---roughing and semi-finished equipment, reach quick finishing deviation from spherical form, improve the purpose of working (machining) efficiency; Adopting the double autorotation grinding disc grinder as its later process---the equipment of fine finishining, microstoning and polishing reaches and improves machining accuracy and the conforming purpose of sphericity.
Pottery belongs to fragile material, under the effect of abrasive particle, the surface can produce different crackles, so, the attrition process of Ceramic Balls will be carried out step by step, finish to smart branch multiple working procedure by thick. operation for a long time non-cutting time long, process time is many, it is long that the cleaning of ball picks and places the time, great advantage is can reasonable distribution allowance, per pass process efficiency height. operation after a little while non-cutting time short, long processing time, abrasive particle degree difference is big, must guarantee that enough allowance could remove defective that preceding working procedure is stayed and improve machining accuracy gradually. the division of operation will be according to manufacturing batch, ball base surplus, error size etc. are comprehensively determined, when big in batches, operation is divided the raising that helps whole efficiency.
Therefore, the present invention carries out the reasonable process technology of Ceramic Balls attrition process and is: slightly grind-half lappingout-lappingout-super lappingout-polishing.For guaranteeing grinding efficiency and precision, should rationally arrange operation according to the surplus of batch size, ball base, to smart, progressively reduce the rotating speed combination of grinding pressure and motion abrasive disk by slightly.Adjust rational grinding agent and help to improve grinding precision and efficient, need take measures abrasive material is suspended in lapping liquid, the lapping liquid circulation is wanted evenly.
Compared with prior art, the present invention has the following advantages: the grinding precision and the grinding efficiency that 1, effectively improve Ceramic Balls equal sphere part, reduce production costs, realize producing in batches, on machining accuracy, efficient and mechanized equipment structure, have tangible comprehensive advantage; 2, to improving grinding precision and the grinding efficiency that accurate ball is produced in batches; special substance balls such as development superhigh precision ball and Ceramic Balls all will play very positive effect; can be at a high speed, the high accuracy axis system provides crucial fundamental parts; promote related industries such as Digit Control Machine Tool, precision instrument towards high speed; efficiently; high-precision direction develops at a quick pace, and can progressively form the high-tech industry of professional production high-precision ceramic ball bearing, taps new sources of economic growth.
Description of drawings
Fig. 1 is that high-precision ceramic balls slightly grinds processing and half lappingout process equipment double-disk rotation eccentric V shaped groove grinding miller structural representation.
Fig. 2 is the processing of high-precision ceramic balls lappingout, the processing of super lappingout and polishing process equipment double autorotation grinding disc grinding machine structure schematic diagram.
The specific embodiment
Below the present invention is further described.
A kind of high-precision ceramic balls high-efficient grinding/polishing process, this processing technology comprises following operation: slightly grind processing, the processing of half lappingout, lappingout processing, super lappingout processing, polishing processing specifically has:
(1), slightly grinds
Its fabrication process condition is: equipment: double-disk rotation eccentric V shaped groove grinding miller.Abrasive disk: fixed abrasive material abrasive disk.Abrasive material: diamond; The granularity of abrasive material: W25; The mass percent of abrasive material in abrasive disk is 20%～80%, for example adopts 50%, and all the other are bond; Load pressure: 10 (N/ balls).Rotating speed combination: Ω
C: 70 (rpm); Ω
B: Ω
B=Ω c.Lapping liquid: water.
(2), half lappingout
Its fabrication process condition is: equipment: double-disk rotation eccentric V shaped groove grinding miller.Abrasive disk: fixed abrasive material abrasive disk.Abrasive material: diamond; The granularity of abrasive material: W15; The mass percent of abrasive material in abrasive disk is 20%～80%, for example adopts 40%, and all the other are bond; Load pressure: 8 (N/ balls).Rotating speed combination: Ω
C: 60 (rpm); Ω
B: Ω
B=Ω c.Lapping liquid: water.
(3), lappingout
Its fabrication process condition is: equipment: the double autorotation grinding disc grinder.Abrasive disk: cast iron abrasive disk.Load pressure: 2.5 (N/ balls).Rotating speed combination: Ω
C: 50 (rpm); Ω
B: Ω
B=3 Ω
CSin (0.01 π t).Abrasive material: B
4C; The granularity of abrasive material: W5; The mass fraction of abrasive material: 20%.Base fluid: kerosene; The mass fraction of base fluid: 70%.Additive and mass fraction thereof: lubricating oil, 5%; Dispersant, 5%.
(4), super lappingout
Its fabrication process condition is: equipment: the double autorotation grinding disc grinder. abrasive disk: cast iron abrasive disk. and load pressure: 1.5 (N/ balls). rotating speed combination: Ω
C: 35 (rpm); Ω
B: Ω
B=3 Ω
CSin (0.01 π t).Abrasive material: B
4C; The granularity of abrasive material: W1; The mass fraction of abrasive material: 15%.Base fluid: kerosene; The mass fraction of base fluid: 75%.Additive and mass fraction thereof: lubricating oil, 5%; Dispersant, 5%.
(5), polishing
Its fabrication process condition is: equipment: the double autorotation grinding disc grinder.Abrasive disk: cast iron abrasive disk.Load pressure: 0.5 (N/ ball).Rotating speed combination: Ω
C: 20 (rpm); Ω
B: Ω
B=3 Ω
CSin (0.01 π t).Abrasive material: CeO
2Micro mist; The mass fraction of abrasive material: 10%.Base fluid: kerosene; The mass fraction of base fluid: 80%.Additive and mass fraction thereof: lubricating oil, 5%; Dispersant, 5%.
With reference to shown in Figure 1, the structural representation of double-disk rotation eccentric V shaped groove grinding miller mainly comprises and grinds drive motors 1 down, body 2, column 3, pressure rod 4, crossbeam 6 pressue devices 7, following abrasive disk drive motors 8, top lap main shaft 9, pressure gauge 10, ring flange 11, disk-drive motor 14 in 12 times abrasive disks 13 of top lap, following grinding, driving belt 15 parts such as grade are formed.Upper and lower abrasive disk 12,13 each free individual motor drive by driving shaft, and rotating speed is adjustable.The multiple tracks V-shaped groove is opened in following abrasive disk 13 upper surfaces, compares with coaxial three dishes, magnetic fluid lapping mode, more is applicable to production in enormous quantities.The rotary main shaft of top lap is without the following center of the V-shaped groove of abrasive disk, i.e. the centre of gyration disalignment of two abrasive disks up and down, and the contact point of ball base and top lap 12 will move along last disc radial.This kind mode is coaxial less demanding to the center of abrasive disk up and down, but grinding track is constantly changed, and compares with the V-shaped groove lapping mode, can obtain better sphericity.The rotation realization of the crossbeam 6 of the setting of the different eccentric throws of top lap and following abrasive disk by being connected column 3.Hydraulic pulldown 7 is installed in the middle of the crossbeam.Pressure rod 4 lower ends connect top lap, and pressure rod can move up and down the lifting that realizes top lap.When top lap with after the ball base contacts, pressure rod is passed to top lap to pressure by ring flange 11 built-in butterfly springs, and the ball base is applied processing load.Process load by the travel condition that presses down of adjusting pressure rod, force value can show by dynamometer 10.The position of top lap is determined by the stroke of pressure rod fully, in case after stroke was determined, the position of top lap was fixed by retaining mechanism, has guaranteed stable pressurization.Have several apertures on the top lap, be convenient to lapping liquid and enter V-shaped groove participation processing.
With reference to shown in Figure 2, be the structural representation of double autorotation grinding disc grinder, mainly comprise top lap 23, down inner disc assembly 21, down outer dish assembly 22, interior axle 18, outer shaft 20, transmission mechanism 16,17, motor 19,31, left and right pillar 28, crossbeam 27, on grind locking device 26, pressue device 25, spring 24, tank 29 and casing 30.Following abrasive disk inner disc 21 and outer dish 22 are installed with coaxial form, adopt bearing to connect each other, guarantee that two following abrasive disks can independent rotation.The taper abradant surface of the conical surface abradant surface in the following abrasive disk inner disc outside and the inboard of the outer dish of following abrasive disk constitutes the V-shaped groove structure.The ball base is placed in the V-shaped groove of annular in the process of lapping, revolution and rotation under the drive of abrasive disk.Following abrasive disk coils outward and drives the AC servo motor 19,31 adopted rotating speed control able to programme, by transmission mechanism 16,17 transmissions, and grinding and following outer grinding in interior axle 18 and outer shaft 20 drive down respectively.Grind rotating speed and monitor in real time, to guarantee that motor is by default speed curves running by the grating velometer.The pressue device 25 that is installed on the crossbeam presses down top lap 23, and pressure is applied on the ball base to be ground.After loading puts in place, locking device 26 lockings are arranged.The column 28 that is installed on the body 30 is used for supporting traverse.Tank 29 is used to prevent the lapping liquid outflow.Have several apertures on the top lap, be convenient to lapping liquid and enter V-shaped groove participation processing.
Table 1 has been listed Ceramic Balls grinding process technique condition:
Table 1
Grinding abrasive uses diamond abrasive, also can use SiC, B
4The C abrasive material.The diamond abrasive cost is higher, the working (machining) efficiency height.Rough lapping has two effects: the one, eliminate the bigger preparation defective in ball base surface, and reduce deviation from spherical form, unified sphere diameter; The 2nd, efficiently going just, surplus satisfies the sphere diameter requirement.Slightly grind and at first the ball base to be divided into groups by maximum gauge, shorten the erratic process of grinding initial stage, and reduce it as far as possible and beat to improve grinding efficiency.The purpose of lappingout is to improve the precision and the surface quality of ball, removes surplus and should guarantee to eliminate the defective that preceding working procedure is left over, and moreover, also should guarantee enough surpluses so that improve precision gradually.The main purpose of polishing is to improve surface quality.
What table 2 was listed is the testing result of ceramic ball finished product.From testing result: the precision level of the Ceramic Balls that processes has reached the G3 precision of steel ball.
Table 2
Table 3 has provided the embodiment of high-precision ceramic balls grinding/polishing process parameter
Table 3
Below only be preferred embodiment of the present invention, every any modifications and changes of doing according to this patent all should be included in protection scope of the present invention.
Claims (5)
1. high-precision ceramic balls high-efficient grinding/polishing process, it is characterized in that: described processing technology may further comprise the steps:
(1), slightly grind processing, its process conditions are:
Abrasive material: diamond or B
4C or SiC; The granularity of abrasive material: W40～W20; The mass percent of abrasive material in abrasive disk is 20%～80%; Load pressure: 8～15N/ ball; Lapping liquid: water;
(2), half lappingout processing, its process conditions are:
Abrasive material: diamond or B
4C or SiC; The granularity of abrasive material: W20～W10; The mass percent of abrasive material in abrasive disk is 20%～80%; Load pressure: 6～10N/ ball; Lapping liquid: water;
(3), lappingout processing, its process conditions are:
Load pressure: 2～5N/ ball; Abrasive material: diamond or B
4C or SiC; The granularity of abrasive material: W10～W5; The mass percent of abrasive material: 10%～30%; Base fluid: kerosene, the mass percent of base fluid: 60%～80%; Additive is a lubricating oil, the mass percent of lubricating oil: 4%～7%; The mass percent of dispersant: 3%～6%.
(4), super lappingout processing, its process conditions are:
Load pressure: 1～2N/ ball; Abrasive material: diamond or B
4C or SiC; The granularity of abrasive material: W2～W0.5; The mass percent of abrasive material: 10%～25%; Base fluid: kerosene; The mass percent of base fluid: 65%～80%; Additive is a lubricating oil, the mass percent of lubricating oil: 4%～7%; The mass percent of dispersant: 3%～6%.
(5), polishing processing, its process conditions are:
Load pressure: 0.5～1N/ ball; Abrasive material: CeO
2Micro mist; The granularity of abrasive material: 500; The mass percent of abrasive material: 5%～20%; Base fluid: kerosene; The mass percent of base fluid: 70%～85%; Additive is a lubricating oil, the mass percent of lubricating oil: 4%～7%; The mass percent of dispersant: 3%～6%.
2. high-precision ceramic balls high-efficient grinding/polishing process as claimed in claim 1, it is characterized in that: adopt double-disk rotation eccentric V shaped groove grinding miller in described step (1)-(2), top lap and following abrasive disk are arranged up and down, described abrasive disk upper surface down has more than three for the V-type groove of placing the ball base at least, described each bar V-type groove is a concentric circles, the described concentrically ringed center of circle overlaps with the center of circle of following abrasive disk, described top lap is eccentric mutually with following abrasive disk, the load pressue device acts on the ball base by top lap, described top lap and following abrasive disk are respectively by motor-driven, and rotating speed makes up: top lap Ω
C: 60～80 (rpm); Following lap speed Ω
B: Ω
B=Ω c.
3. high-precision ceramic balls high-efficient grinding/polishing process as claimed in claim 1, it is characterized in that: adopt the double autorotation grinding disc grinder in described step (3)-(5), by the conical surface abradant surface in the abrasive disk inner disc outside and the taper abradant surface that following abrasive disk coils the inboard outward constitute the V-shaped groove structure down, the load pressue device acts on the ball base by top lap, described V-shaped groove structure and top lap constitute three processing contact points of mill ball together, and described top lap, the outer dish of following abrasive disk and the following inner disc that grinds have identical gyroaxis; Dish and following the grinding in the inner disc outside described top lap, following abrasive disk, wherein the rotating shaft of two dishes is respectively by motor-driven, and the rotating speed of two dishes is Ω
BWith Ω c; Rotating speed combination: Ω
C: 40～60rpm; Ω
B: Ω
B=3 Ω
CSin (0.01 π t).
4. high-precision ceramic balls high-efficient grinding/polishing process as claimed in claim 2 is characterized in that: the abrasive disk of described double-disk rotation eccentric V shaped groove grinding miller adopts the fixed abrasive material abrasive disk.
5. high-precision ceramic balls high-efficient grinding/polishing process as claimed in claim 3 is characterized in that: the abrasive disk of described double autorotation grinding disc grinder adopts the cast iron abrasive disk.
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