CN102528641A - Ceramic ball lapping method based on combined-type fixation abrasive material grinding disc - Google Patents
Ceramic ball lapping method based on combined-type fixation abrasive material grinding disc Download PDFInfo
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Abstract
The invention relates to a ceramic ball lapping method based on a combined-type fixation abrasive material grinding disc. The method comprises the following steps of: 1): a manufacturing procedure of the combined-type fixation abrasive material grinding disc: (1.1) selecting a cast iron grinding disc as a basic structure, and processing an annular groove on the cast iron grinding disc; (1.2) preparing ingredients of a fixation grinding apparatus; (1.3) manufacturing a combined-type fixation grinding disc; (1.4) forming a V-shaped groove on the upper end of the combined-type fixation abrasive material grinding disc according to the diameter of a ceramic ball to be processed, wherein the V-shaped groove takes the annular groove filled with a fixation abrasive material as a centre; and (2) arranging the combined-type fixation abrasive material grinding disc on a lower plate of a lapping machine, wherein an upper plate adopts the cast iron grinding disc or the combined-type fixation abrasive material grinding disc; placing the ceramic ball to be processed in a raceway of the lower plate; and starting the lapping machine so as to realize finish machining on the ceramic ball. The lapping method provided by the invention has the advantages of improving the utilization ratio of the fixation abrasive material, reducing the difficulty in forming a processing groove on the grinding disc and finishing, reducing the production cost, reducing the processing non-cutting time, and improving the processing efficiency.
Description
Technical field
The present invention relates to Ceramic Balls grinding technics field, especially a kind of Ginding process of Ceramic Balls.
Background technology
Along with the development of industrial technology, performance requirements such as high speed, high accuracy, high reliability have been proposed for lathe and instrument and equipment.Compare with traditional bearing steel; It is little that aluminium oxide ceramics has density; Hardness is high, elastic modelling quantity is high (rigidity is high), wear-resistant, thermal coefficient of expansion is low, heat endurance and chemically stable is good, excellent comprehensive performances very such as insulation, no magnetic; Be considered to make the optimal material of bearing roller, and in the application of ceramic ball bearing (steel race ring, ceramic material rolling element .), obtain very ten-strike.Ceramic ball bearing has that long service life (steel bearing 2～5 times), rotating speed are high, overall precision and good rigidity, thermal stability is good and excellent comprehensive performance such as nonmagnetic; At high temperature, at a high speed, have boundless application prospect under the condition of work such as high accuracy, acid and alkali corrosion, galvano-cautery, high-intensity magnetic field, unlubricated or medium be lubricated, be widely used in numerous areas such as Aero-Space, military affairs, oil, chemical industry and high speed and precision machinery.
But; Aluminium oxide ceramics belongs to hard crisp difficult-to-machine material; Traditional ceramic ball processing mainly adopts the V-shaped groove polishing that grinds the steel ball; The diamond abrasive that adopts hard adopts the free abrasive abrasive method to process as abrasive media, the process-cycle long (accomplish the ceramic batch ball and need 12～15 days).Very long process and expensive diamond abrasive have caused high manufacturing cost.The domestic and international research experience shows that the working (machining) efficiency of aluminium oxide ceramics rolling element is low, the processing cost height is the main cause that the restriction ceramic ball bearing is applied.
In order to overcome the lower problem of free abrasive working (machining) efficiency; Reports such as at present existing patent, technical paper have been developed the quick removal that fixed abrasive material (emery wheel) grinding technique is used for the allowance of Ceramic Balls, utilize the efficient removal of mechanisms such as the delineation realization of hard abrasive materials (hardness of these abrasive materials will be higher than the Ceramic Balls material) such as the diamond that is consolidated, boron carbide, carborundum to the Ceramic Balls material.In the fixed abrasive material attrition process, abrasive particle is cemented in together, and abrasive particle is mainly removed workpiece material with the form of delineation, and the abrasive particle quantity of participating in processing is many, can obtain very high material removing rate.
But the fixed abrasive material mill that adopts at present all adopts monoblock type, and just the monoblock mill all is the concretion abrasive grinding tool, and there is following subject matter in this processing method:
1) utilization rate of fixed abrasive material mill is low, and waste is serious.This be because, before the milled ceramic ball, must on mill, process several concentric annular V shape groove, must leave the gap between the groove, also must leave the gap between groove and the mill.The abrasive material that grinding of these gap portions is not participated in actual processing, has caused a large amount of wastes; Grind in worker's process, (V-shaped groove is dark excessively, and Ceramic Balls is absorbed in wherein along with V-shaped groove weares and teares gradually; Can't effectively contact with top lap); Need revise it, the mill end face is removed certain height, at this moment some fixed abrasive material promptly is wasted without using again.Therefore, the utilization rate that this monoblock type is being ground the abrasive material mill is low, has increased production cost.
2) processing of mill surface V-shaped groove and mill finishing difficulty.Because the Ceramic Balls hardness that will process is higher, therefore, the employed abrasive material of fixed abrasive material mill generally all uses the abrasive material of extreme hardness, such as diamond, carborundum, cubic boron nitride etc.Therefore, machning v grooves is very difficult with finishing on these fixed abrasive material mills, and the tool wear of machning v grooves is very fast.
3) all-in-one-piece major diameter fixed abrasive material mill is made difficulty.Because the fixed abrasive material grinding tool adopts monolithic construction; During mill more than will making
; Because the grinding tool bulky, manufacture difficulty increases naturally.Simultaneously,, be difficult to guarantee that the grinding tool top layer is consistent with inner performance, influenced the stability of processing because the grinding tool volume is bigger.
Summary of the invention
Fixed abrasive material grinding tool utilization rate in the present Ceramic Balls fixed abrasive material process of lapping is low in order to overcome, the surperficial V-shaped groove processing difficulties of grinding tool, mill are made difficulty, the relatively poor deficiency of processing stability, the present invention provide that a kind of fixed abrasive material utilization rate is high, the mill finishing is convenient, production cost is low, processing stability is good the Ceramic Balls Ginding process based on combined type fixed abrasive material mill.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of Ceramic Balls Ginding process based on combined type fixed abrasive material mill, this Ginding process may further comprise the steps:
1) process of combined type fixed abrasive material mill:
1.1) to select the cast iron mill be foundation structure, on the cast iron mill, processes cannelure;
1.2) preparation of the batching of set grinding tool: described set grinding tool is formulated by abrasive material, curing agent and filler, and the quality percentage composition of three kinds of components is respectively: abrasive material 60%～80%, curing agent 10%～20%, filler 10%～20%; Abrasive material, curing agent, filler are mixed, stir;
1.3) making of combined type set mill: for the mill diameter during less than
; With the cast iron mill is grinding tool; With the batching that configures hot forming in the cast iron mill; And the completion heat cure, the combined type fixed abrasive material mill that fixed abrasive material and cast iron mill are become one; For the mill diameter during more than or equal to
; With the batching that configures hot forming in mould; Solidify after the demoulding; The set grinding tool is made into the grinding tool piece; The cannelure that is embedded into the cast iron mill then makes the compound combined type fixed abrasive material mill that becomes of set grinding tool and cast iron plate;
1.4) the offering of V-shaped groove on the combined type fixed abrasive material mill: according to the diameter of Ceramic Balls to be processed; Offer V-shaped groove in combined type fixed abrasive material mill upper surface; V-shaped groove is the center with the cannelure of filling fixed abrasive material; The groove width bv of V-shaped groove is the diameter of ball to be processed, and flute profile angle α is 60～120 °;
2) combined type fixed abrasive material mill is to the processing of Ceramic Balls: combined type fixed abrasive material mill is installed on the lower wall of grinder, and last dish adopts cast iron mill or combined type fixed abrasive material mill; Ceramic Balls to be processed is placed in the raceway of lower wall, starts grinder, and between upper lower burrs, injects cooling fluid; V-shaped groove play the guiding role to the motion of Ceramic Balls, and the fixed abrasive material of V-shaped groove bottom cuts, draws and wipe and extruding the Ceramic Balls surface, realizes the fine finishining to Ceramic Balls.
Further; This Ginding process is further comprising the steps of: the 3) finishing of combined type fixed abrasive material mill: when the groove wear of combined type fixed abrasive material mill; Ceramic Balls is normally rolled in groove or can't effectively contact with top lap the time, setting height is removed in the upper surface of combined type fixed abrasive material mill.
Further again, said step 1.1) in, the Brinell hardness 150-250 of described cast iron mill; The diameter d of Ceramic Balls to be processed; The groove width b of said cannelure is 2/3～4/5 of a Ceramic Balls diameter to be processed, i.e. b=2/3d～4/5d, and groove depth hc confirms according to the thickness h p that cast iron grinds; Groove depth is less than mill thickness 10-20mm, i.e. hc=hp-10～hp-20; Spacing bj is that Ceramic Balls diameter to be processed does between groove; Bj=2/3d+2～2/5d+1, the back gauge bb at groove and mill edge are bb=1/3d+5～1/3d+15 (mm); Maximum fluting quantity n confirms as according to the width bp and the above parameter of cast iron abrasive disk: n=(bp-10)/(d+1), n rounds.
Further, in the said step 3), finishing height hx is 1/3～2/3 of processing ball essence, i.e. hx=1/3d～2/3d (mm).
Described abrasive material is diamond, cubic boron nitride, carborundum, aluminium oxide, cerium oxide, silica or iron oxide.
Described curing agent is one of following: 1. epoxy curing agent, 2. unsaturated-resin curing agent, 3. novolac resin, 4. thermosetting phenolic resin, 5. polyamide curing agent, 6. phenolic aldehyde-acetal resin, 7. phenolic aldehyde-epoxy resin, 8. boron bakelite resin, 9. organosilicon phenolic resins.
Described filler is one or several following mixing: 1. NaOH, 2. sodium acid carbonate, 3. starch based filler, 4. carbohydrate filler, 5. cellulose family filler, 6. inorganic salts filler.
Said step 1.3) in, in the heat pressure forming process, pressure is 300-600kg/cm
2, hot pressing temperature is arranged on 100-200 ℃, and hot pressing time is arranged on 45-120min, and in the solidification process, oven temperature remains on 80-200 ℃, drying time 10-48 hour.
Technical conceive of the present invention is: adopt cast iron materials to process the foundation structure of mill, and fill or embed fixed abrasive material in the cannelure above that, form combined type fixed abrasive material mill Ceramic Balls is processed.The processing process, fixed abrasive material has guaranteed that as the bottom of ceramic ball processing with groove all fixed abrasive materials can both be used for the processing of Ceramic Balls; And the gap portion between the groove is to be still cast iron, thereby thereby to have avoided in the use of monoblock type fixed abrasive material mill, the fixed abrasive material of part just is wasted without using between the groove gap, has improved the utilization rate of abrasive material, has reduced production cost.Simultaneously,, reduced the difficulty of beginning groove and mill finishing, reduced the wearing and tearing of fluting and dressing tool, further reduced production cost because the both sides of processing groove (V-shaped groove) all are cast iron.Because in the manufacturing process of this combined type fixed abrasive material mill, fixed abrasive material can between fill or be embedded in the foundation structure of cast iron materials, reduced the difficulty of major diameter fixed abrasive material mill.
Beneficial effect of the present invention mainly shows: improved the utilization rate of fixed abrasive material, reduced the difficulty that mill is offered processing groove and finishing, reduced production cost, reduced processing non-cutting time, improved working (machining) efficiency.
Description of drawings
Fig. 1 is the structural representation of traditional integral formula fixed abrasive material mill.
Fig. 2 is the structural representation of combined type fixed abrasive material mill cast iron mill (foundation structure).
Fig. 3 is the structural representation of combined type fixed abrasive material mill (V-shaped groove is offered in the upper surface)
Fig. 4 is the principle schematic that adopts combined type fixed abrasive material mill processing ceramic ball.
Fig. 5 is the combined type fixed abrasive material mill structural representation after the groove wear.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1～Fig. 5, a kind of Ceramic Balls Ginding process based on combined type fixed abrasive material mill, this Ginding process may further comprise the steps:
1) process of combined type fixed abrasive material mill:
1.1) processing of cast iron mill (foundation structure) ring channel structures: described combined type fixed abrasive material grinding tool is a matrix with cast iron mill 1, and described cast iron mill grinds cylinder iron mill for Ceramic Balls commonly used, forbids that sand holes are arranged, Brinell hardness 150-250.According to the diameter d of Ceramic Balls 5 to be processed, on abrasive disk, process cannelure 2, groove width b is 2/3～4/5 of a Ceramic Balls diameter to be processed, i.e. b=2/3d～4/5d (mm).Groove depth hc confirms according to the thickness h p that cast iron grinds; Groove depth is less than mill thickness 10-20mm; Promptly spacing bj is that Ceramic Balls diameter to be processed does between
groove, bj=2/3d+2～2/5d+1 (mm).The back gauge bb at groove and mill edge is bb=1/3d+5～1/3d+15 (mm).Maximum fluting quantity n confirms as according to the width bp and the above parameter of cast iron abrasive disk: n=(bp-10)/(d+1) (n rounds).
1.2) preparation of the batching of set mould: described set grinding tool is by abrasive material, and curing agent and filler are formulated, and the quality percentage composition of three kinds of components is respectively: abrasive material 60%～80%, curing agent 10%～20%, filler 10%～20%; Abrasive material, curing agent, filler are mixed, stir;
3) making of combined type set mill:, be grinding tool directly, with the batching that configures hot forming in the cast iron mill with cast iron mill 1 for the less situation of mill diameter; And completion heat cure; Form fixed abrasive material groove 3, make the compound mill that fixed abrasive material and cast iron mill become one (fixed abrasive material and cast iron plate compound), and its upper surface is repaired; Smooth on the assurance grinding tool, flatness is controlled in the 0.1mm.
As another kind of preferred version; For the bigger mill of mill diameter, can the batching that configure hot forming in mould be solidified after the demoulding; The set grinding tool is made into little grinding tool piece; Be embedded into then in the groove 2 of cast iron mill, and, make the set grinding tool become as a whole with cast iron plate with the bonding formation fixed abrasive material of glue groove 3.
1.4) the offering of V-shaped groove on the combined type fixed abrasive material mill: according to the diameter of Ceramic Balls 5 to be processed; Offer V-shaped groove 4 in combined type fixed abrasive material mill upper surface; V-shaped groove is the center with the cannelure 3 of filling fixed abrasive material; The groove width bv of V-shaped groove is the diameter of ball to be processed, and flute profile angle α is 60～120 °.At this moment the dual-side of V-shaped groove is a cast iron, and the bottom of V-shaped groove then is a fixed abrasive material.The process of offering of V-shaped groove, actual is processing (with the expansion of the notch of original cannelure) to cast iron plate, so tool wear is less.
Simultaneously, have only cannelure partially filled by abrasive material, these abrasive materials all have neither part nor lot in the process to Ceramic Balls.Part between the groove is a cast iron, thereby has avoided in the use of monoblock type fixed abrasive material mill, and the fixed abrasive material of part just is wasted without using between the groove gap, has improved the utilization rate of abrasive material, has reduced production cost.
2) combined type fixed abrasive material mill is to the processing of Ceramic Balls: combined type fixed abrasive material mill is installed on the lower wall 8 of grinder, on coil 6 and adopt cast iron mill or identical combined type fixed abrasive material mills; Ceramic Balls 5 to be processed is placed in the V-shaped groove 4 of lower wall, starts grinder, and between upper lower burrs, injects cooling fluid 7; The motion of 4 pairs of Ceramic Balls of V-shaped groove play the guiding role, and 3 pairs of Ceramic Balls surfaces of fixed abrasive material of V-shaped groove bottom are cut, drawn and wipe and extruding, realize the fine finishining to Ceramic Balls.
3) finishing of combined type fixed abrasive material mill: when the groove wear of combined type fixed abrasive material mill; The raceway groove 9 of wearing and tearing can't guarantee the normal rolling of Ceramic Balls 5 or when effectively contacting with top lap 6; Need repair combined type fixed abrasive material mill, certain altitude is removed in the upper surface of mill.Finishing height hx is generally 1/3～2/3 of processing ball essence, i.e. hx=1/3d～2/3d (mm).Because fixed abrasive material 3 is in the bottom of V-shaped groove all the time, can along with processing carry out nature consumption, what need finishing is the cast iron structure that the V-shaped groove both sides are worn.Therefore, it is many easily that the finishing cast iron materials is repaired fixed abrasive material relatively, and dressing accuracy is also higher.Simultaneously, the wearing and tearing of dressing tool reduce, and production cost descends.
Preferably, in said step 3), described abrasive material can be diamond, cubic boron nitride, carborundum, aluminium oxide, cerium oxide, silica and iron oxide.
Described curing agent is one of following: 1. epoxy curing agent, 2. unsaturated-resin curing agent, 3. novolac resin, 4. thermosetting phenolic resin, 5. polyamide curing agent, 6. phenolic aldehyde-acetal resin, 7. phenolic aldehyde-epoxy resin, 8. boron bakelite resin, 9. organosilicon phenolic resins etc.
Described filler is one or several following mixing: 1. NaOH, 2. sodium acid carbonate, 3. starch based filler, 4. carbohydrate filler, 5. cellulose family filler, 6. inorganic salts filler.
In the said step 3), in the heat pressure forming process, pressure is 300-600kg/cm
2, hot pressing temperature is arranged on 100-200 ℃ according to the difference of curing agent, and hot pressing time is arranged on 45-120min according to difference between the grinding tool.Said step 2) in, in the solidification process, oven temperature remains on 80-200 ℃, drying time 10-48 hour; Can in the cannelure of cast iron mill, directly be made into combined type fixed abrasive material mill for the mild abrasives fixed abrasive material mill of mill diameter less than
; For the mill of diameter greater than
; Can fixed abrasive material be made into the grinding tool piece; Embed in use in the cannelure of cast iron plate, and be bonded to one with glue.
Present embodiment is chosen at the processing of carrying out silicon nitride ceramic ball on the vertical steel ball ball lapping machine of 3M7240L.The embodiment condition is as shown in table 1.The set grinding tool has adopted the silicon carbide abrasive making.Use combined type fixed abrasive material mill that the silicon nitride ceramic ball of
is processed.Before embodiment begins, V-shaped groove is carried out beforehand research, be used for guaranteeing that Ceramic Balls contacts well with top lap at the groove of following abrasive disk.
Table 1
Table 1 has shown the processing result of silicon nitride ceramic ball among the embodiment.The result shows; Silicon oxynitride Ceramic Balls material removing rate in the present embodiment is stable; Material removing rate can reach 50-80 μ m/h and compare (under the same process condition with traditional process of lapping; Adopt free free abrasive that silicon nitride ceramic ball is ground), material removing rate almost is under the same conditions 5-8 a times.Close with the working (machining) efficiency of traditional monoblock type fixed abrasive material mill, but the use amount of fixed abrasive material is saved 30%-40%, and grinding tool preparation agent use cost reduces more than 15%.This table adopts combined type set grinding tool grinding tool processing ceramic ball method replacing traditional ceramic ball processing technical elements, has a good application prospect.
Last example only is preferred embodiment of the present invention, and every any modification and change of doing according to this patent all should be included in protection scope of the present invention.
Claims (8)
1. Ceramic Balls Ginding process based on combined type fixed abrasive material mill, it is characterized in that: this Ginding process may further comprise the steps:
1) process of combined type fixed abrasive material mill:
1.1) to select the cast iron mill be foundation structure, on the cast iron mill, processes cannelure;
1.2) preparation of the batching of set grinding tool: described set grinding tool is formulated by abrasive material, curing agent and filler, and the quality percentage composition of three kinds of components is respectively: abrasive material 60%～80%, curing agent 10%～20%, filler 10%～20%; Abrasive material, curing agent, filler are mixed, stir;
1.3) making of combined type set mill: for the mill diameter during less than
; With the cast iron mill is grinding tool; With the batching that configures hot forming in the cast iron mill; And the completion heat cure, the combined type fixed abrasive material mill that fixed abrasive material and cast iron mill are become one;
For the mill diameter during more than or equal to
; With the batching that configures hot forming in mould; Solidify after the demoulding; The set grinding tool is made into the grinding tool piece; The cannelure that is embedded into the cast iron mill then makes the compound combined type fixed abrasive material mill that becomes of set grinding tool and cast iron plate;
1.4) the offering of V-shaped groove on the combined type fixed abrasive material mill: according to the diameter of Ceramic Balls to be processed; Offer V-shaped groove in combined type fixed abrasive material mill upper surface; V-shaped groove is the center with the cannelure of filling fixed abrasive material; The groove width bv of V-shaped groove is the diameter of ball to be processed, and flute profile angle α is 60～120 °;
2) combined type fixed abrasive material mill is to the processing of Ceramic Balls: combined type fixed abrasive material mill is installed on the lower wall of grinder, and last dish adopts cast iron mill or combined type fixed abrasive material mill; Ceramic Balls to be processed is placed in the raceway of lower wall, starts grinder, and between upper lower burrs, injects cooling fluid; V-shaped groove play the guiding role to the motion of Ceramic Balls, and the fixed abrasive material of V-shaped groove bottom cuts, draws and wipe and extruding the Ceramic Balls surface, realizes the fine finishining to Ceramic Balls.
2. a kind of Ceramic Balls Ginding process as claimed in claim 1 based on combined type fixed abrasive material mill, it is characterized in that: this Ginding process is further comprising the steps of:
3) finishing of combined type fixed abrasive material mill: when the groove wear of combined type fixed abrasive material mill, Ceramic Balls is normally rolled in groove or can't effectively contact with top lap the time, setting height is removed in the upper surface of combined type fixed abrasive material mill.
3. according to claim 1 or claim 2 a kind of Ceramic Balls Ginding process based on combined type fixed abrasive material mill is characterized in that: said step 1.1), and the Brinell hardness 150-250 of described cast iron mill; The diameter d of Ceramic Balls to be processed; The groove width b of said cannelure is 2/3～4/5 of a Ceramic Balls diameter to be processed, i.e. b=2/3d～4/5d, and groove depth hc confirms according to the thickness h p that cast iron grinds; Groove depth is less than mill thickness 10-20mm, i.e. hc=hp-10～hp-20; Spacing bj is that Ceramic Balls diameter to be processed does between groove; Bj=2/3d+2～2/5d+1, the back gauge bb at groove and mill edge are bb=1/3d+5～1/3d+15 (mm); Maximum fluting quantity n confirms as according to the width bp and the above parameter of cast iron abrasive disk: n=(bp-10)/(d+1), n rounds.
4. according to claim 1 or claim 2 a kind of Ceramic Balls Ginding process based on combined type fixed abrasive material mill is characterized in that: in the said step 3), finishing height hx for the processing ball smart 1/3～2/3, i.e. hx=1/3d～2/3d (mm).
5. according to claim 1 or claim 2 the Ceramic Balls Ginding process based on combined type fixed abrasive material mill, it is characterized in that: described abrasive material is diamond, cubic boron nitride, carborundum, aluminium oxide, cerium oxide, silica or iron oxide.
6. according to claim 1 or claim 2 the Ceramic Balls Ginding process based on combined type fixed abrasive material mill is characterized in that: described curing agent is one of following: 1. epoxy curing agent, 2. unsaturated-resin curing agent, 3. novolac resin, 4. thermosetting phenolic resin, 5. polyamide curing agent, 6. phenolic aldehyde-acetal resin, 7. phenolic aldehyde-epoxy resin, 8. boron bakelite resin, 9. organosilicon phenolic resins.
7. according to claim 1 or claim 2 the Ceramic Balls Ginding process based on combined type fixed abrasive material mill, it is characterized in that: described filler is one or several following mixing: 1. NaOH, 2. sodium acid carbonate, 3. starch based filler, 4. carbohydrate filler, 5. cellulose family filler, 6. inorganic salts filler.
8. according to claim 1 or claim 2 the Ceramic Balls Ginding process based on combined type fixed abrasive material mill, it is characterized in that: said step 1.3), in the heat pressure forming process, pressure is 300-600kg/cm
2, hot pressing temperature is arranged on 100-200 ℃, and hot pressing time is arranged on 45-120min, and in the solidification process, oven temperature remains on 80-200 ℃, drying time 10-48 hour.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103286701A (en) * | 2013-06-08 | 2013-09-11 | 上海泛联科技股份有限公司 | Technology for manufacturing grinding plate used for grinding ceramic ball |
| CN106239351A (en) * | 2016-08-08 | 2016-12-21 | 河南平高电气股份有限公司 | A kind of lapping device |
| CN111266800A (en) * | 2018-12-04 | 2020-06-12 | 无锡飞云球业股份有限公司 | Slotting method for rotating plate of vertical steel ball lapping machine |
| CN112743448A (en) * | 2021-01-04 | 2021-05-04 | 大连理工大学 | Fixed abrasive grinding method for metal flat plate |
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| KR20080090596A (en) * | 2007-04-05 | 2008-10-09 | 이원근 | Spherical ball polishing method and spherical ball polishing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103286701A (en) * | 2013-06-08 | 2013-09-11 | 上海泛联科技股份有限公司 | Technology for manufacturing grinding plate used for grinding ceramic ball |
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| CN112743448A (en) * | 2021-01-04 | 2021-05-04 | 大连理工大学 | Fixed abrasive grinding method for metal flat plate |
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| CN102528641B (en) | 2014-06-18 |
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