CN1394718A - Method for repairing and maintaining grinding board by using double-board grinding machine - Google Patents
Method for repairing and maintaining grinding board by using double-board grinding machine Download PDFInfo
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- CN1394718A CN1394718A CN 02125110 CN02125110A CN1394718A CN 1394718 A CN1394718 A CN 1394718A CN 02125110 CN02125110 CN 02125110 CN 02125110 A CN02125110 A CN 02125110A CN 1394718 A CN1394718 A CN 1394718A
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Abstract
The invention relates to abrasive working processes, namely lapping high- accuracy plane-parallel surfaces of parts in two-disc lapping machine tools with planetary lapping mechanism. The method comprises steps of determining value Hlap and form of out-of-planeness of one of laps (usually lower lap as more comfortable); applying abrasive paste (suspension) with grain size da = ( 2 - 3) Hlap on lap surface and uniformly distributing it; mounting at least three dressing tools between laps uniformly along circle in such a way that their continuous surface is turned to side of convex surface of one lap and their annular surface is turned to side of concave surface of other lap; performing cyclic dressing at providing rotation of laps clockwise and counter-clockwise; measuring value of out-of-planeness between cycles; then tilting dressing tool and going on dressing; selecting outer diameter of dressing tool equal to 1.0 - 1.01 of lap width and selecting width of annular surface consisting (0.2 - 0.3) of width of working surface of lap.
Description
Invention field
The present invention relates to a kind of attrition process, specifically, relate to the two-lap lapping machine that a kind of utilization is provided with the planetary-type grinding machine tool, the parallel elements on plane is carried out high-precision grinding.
Background technology
The known cutting down method that has two kinds corresponding to following styles of dressing: the dynamic method (kinematic method) and (forced method) method of pressure.
In the grinding of being undertaken by the speed that part self after the fine finishining is in utilize the grinding machinery device and kinematic cyclical swing, be used for providing equally distributed mechanical power on whole mill surface, carry out the finishing of dynamics mill (with reference to the certificate of invention N327989 of the former Soviet Union, B24B7/04,1972).Described dynamics finishing is effectively for the primary step of grinding, but owing to must use the grinding pattern of non-the best, can not guarantee high-quality grinding rear surface.In addition, employed equipment must be equipped with independent driving, so that in the scope of broadness, be adjusted at various grinding machinery devices, and for example central gear and planetary gear, upper and lower mill, programming Control and at unique software of various elements.
Forcing method for trimming also is known (with reference to " the diamond abrasive of element grinds .M., NIIMACH, 1972, pp.188-192 "), and this method is by slotting with cutting element directly carrying out on mill; Be stacked on the mill with respect to lower millstone displacement lower millstone at upper millstone; Utilize grinder to grind; Utilize the grinding of three plate techniques.
First two dressing technique can not be guaranteed the precision of repairing, because other two kinds of methods require to dismantle mill from equipment, they consume very much manpower.
The pressure method for trimming of known use special equipment is:
According to the inventors certificate N1553337 B24B53/02 of the former Soviet Union, 1991; JP 930528N2-9055-36118 B24B53/00, the galvanic corrosion method of being introduced among the B23D19/00;
The grinding of the end face of emery wheel and periphery: European patent document application number EP 0470337B24B53/02, open day on February 12nd, 1992, ISM M7; Japanese documentation JP 7010494B24B37/00 has introduced said method in 1998.
The finishing that utilizes galvanic corrosion method and emery wheel method for grinding to carry out makes machined region mixed and disorderly because of the residue with coarsegrain, and employed equipment complexity, can not guarantee desired precision; Therefore after this finishing, mill need be corrected.
Other pass through force the mill mechanically deform to be used to proofread and correct to grind and the equipment of polishing tool shape also is known patent documentation SU 1296382 B24B37/04 for example, 1987; DE4407148 B24B49/02,1997 are introduced.
These equipment are consumptive equipment in real life.Wish that mainly they are used to carry out finishing procedure in the optics polishing.
The technical scheme of up-to-date proposition is to utilize the double plate vibratory equipment with finishing ring to carry out the method that mill is repaired, refer to Patent Document SU 1678584 B24B37/04,1991 (prototypes), according to this kind method, the finishing ring is set between the mill and is in planetary motion, mill is in the cycling cycling vibration of anti-phase translation, and a mill is set in its axis additional movements.
Mill rotates with different angular speed with the finishing ring.
The shortcoming of this method is that the motion of finishing machinery is that complicated motion-promotion force is learned, and the use of vibration mill is restricted.
Summary of the invention
Technical purpose of the present invention is to simplify the execution of mill method for trimming, strengthens technological feasibility, improves productivity ratio and dressing accuracy.
For realizing purpose of the present invention, the invention provides a kind of method of mill being repaired with two-lap lapping machine, according to this method, dressing tool is set between the mill and is in planetary motion, and the axis that makes mill center on them rotates in horizontal plane.
According to the present invention, utilize the dressing tool of gear shape to repair, an end face of its middle gear is continuous, another end face has annular projection; The external diameter of selection tool working surface makes it equal 1.00～1.01 times of mill width, selects the width of annular surface projection, makes it equal 0.2～0.3 times of mill working surface; Initial period is located dressing tool like this, makes the convex surface of its continuous operation surface in the face of a mill, and mill is alternately rotated in the clockwise direction with counterclockwise; Detect the nonflatness value between each circulation, the dressing tool that overturns then, employed grinding-material are that granularity is 2～3 times of the initial nonflatness value of mill.
Description of drawings
Fig. 1～4 have shown the typical distortion of mill working surface shape;
Fig. 5 and 6 has shown in the dissimilar wearing and tearing (annular of Fig. 5; The segment shape of Fig. 6) operating position of dressing tool under the situation; The initial operation position is represented in the left side; The state after the finishing is finished in the right side representative, wherein
The nonflatness value of the upper and lower mill of H П p-;
The width of B-mill working surface,
The external diameter of the working surface of Д p-dressing tool;
The annular surface width of the projection of b-dressing tool.
The specific embodiment
The experiment of being carried out is determined, the distortion of upper millstone 1 (lower millstone 2) is the mirror image of lower millstone 2 (upper millstone 1), the shape of described distortion can be the annular surface (spherical anchor ring) of the convex 3 shown in Fig. 1 and 2 (spill 4), or the spherical surface (segment) of the convex shown in Fig. 3 and 45 (spill 6).
Fig. 1 has shown the bulge loop shape surface on the lower millstone (the hollow toroid surface on the upper millstone), produces above-mentioned bulge loop shape surface when external diameter is approximately equal to the ring-shaped work pieces of mill width grinding, and it is positioned on the chuck with small eccentricity or does not have on the eccentric chuck.0.3 times of the width that can not be surpassed the mill working surface by the width of lapped face of ring.
Fig. 2 has shown the hollow toroid surface on the lower millstone (the bulge loop shape surface on the upper millstone), when grinding such element, produces above-mentioned hollow toroid surface, and promptly polished surface occupies chuck equably fully, and centers on the width of whole mill.
Fig. 3,4 has shown the mill distortion of the segment form of convex 5 (spill 6), grind single with respect to the chuck eccentric axis and have a complicated shape for example produced above-mentioned distortion when guiding valve, stator, paired parts and the pinion of gear shape pump etc. by the part of lapped face.
The nonflatness H П p value of upper and lower mill is identical.
As illustrated in Figures 5 and 6, proposed dressing tool is a gear 7, and an end face of this gear is continuous, and another surface has annular projection 9, and the width of described projection 9 " b " is 0.2～0.3 times of mill working surface width.
Continuous surface when the working portion of the dressing tool of this form has selected to consider finishing produces the nonreentrant surface on the mill, and annular surface produces the recessed surface on the mill.
Utilize gears engaged, dressing tool 7 and central gear 10 and planetary gear 11 are in contact with one another, and utilize its working surface and the upper and lower mill of the lapping using star lapping machine machinery of grinder to interact.
The external diameter Д p of dressing tool is set to (1.00～1.01) B, thereby realizes utilizing the condition of dressing tool surface around the whole width of mill, and described surface does not allow to exist any off-centre.
Increase Д p and make it will cause uncontrollable wearing and tearing greater than 1.01B, owing under the effect on dressing tool surface, taken away from the grinding-material of workspace unpredictablely, this dressing tool surface is dropped on outside the boundary of mill.
In order to realize this condition, can carry out gears engaged, thereby make the little 2～3mm of engagement aspect ratio instrument end face.The thickness of dressing tool is to be predetermined to be to make guarantee enough rigidity in 0.2～0.15 scope of 20～50mm or gear ring external diameter.
In order to form ring surface: at the middle body of instrument the blind hole of 5～10mm is set, the width of annular surface is (0.2～0.3) B.According to experimental result, the width value of annular surface that equals (0.2～0.3) B is optimised.When b＜0.2B, annular surface stands too fast wearing and tearing, and when b＞0.3B, dressing process slows down suddenly.
Select the granularity of grinding-material by experiment, make granularity da=(2～3) H П p, this moment, da was the granularity (normal dia) of grinding-material.
In grinding (finishing), in the system of element-grinding-material intermediate layer-mill (dressing tool-grinding-material intermediate layer-mill), utilize the individual layer abrasive grains, the distortion (nonflatness) of mill accumulation is eliminated knownly.
If the size of described particle is less than the nonflatness of mill, " high zone " (the seeing Fig. 5 and 6) on dressing tool contact mill surface, in the course of the work, grinding-material little by little is transported to " low area " on mill surface, therefore in fact can not repair, by experiment, the above-mentioned phenomenon of proof under industrial production environment.Vice versa, and when the size of described particle during greater than the nonflatness of mill, described particle is brought to " the high zone " on mill surface, and sticks to described zone, so they strong wear occurs.The experiment of being carried out is determined, is worked as d
aDuring＞2H П p, begin to quicken finishing.
In dressing process, identical with process of lapping, particle is through frayed and broken.Therefore, in the system of mill-grinding-material intermediate layer-dressing tool, use monolayer of particles, therefore, guaranteed dressing quality with same size.If d
a＞3H П p, mill may obtain a roughness and indentation surpass grind in the rough surface of granularity of employed grinding-material, this situation needing to cause the mill operation (though mill is smooth, part is also lost flatness) of longer time during grinding.
Therefore can utilize the grinding-material that grinds thereon, repair suitably.But for realizing this purpose, must satisfy the condition of H П p＞0.5da, this causes repairing mill continually.
The method of utilizing proposed instrument to carry out the mill finishing is carried out (Fig. 5 and 6) by following mode: a flatness detecting instrument device is determined the shape and the nonflatness value of a mill (typically using lower millstone for simplicity); Use granularity to be d
aThe abrasive pastes (suspension) of=(2～3) H П p are evenly distributed in it on surface; Three dressing tools 7 that between mill 1 and 2, distribute at least equably, the continuous surface of described instrument 7 is in the face of the convex surface (Fig. 5 and 6) of a mill, and their annular surface is facing to the concave surface of another mill; The finishing pattern in each cycle is scheduled and be provided with :-kinematics pattern-and counterclockwise and clockwise direction cycle of repairing.-pressure.
Following kinematics pattern is set and is used to carry out desired method: at a direction center of rotation gear 10, upper millstone 2 and lower millstone 1; Planetary gear 11 is fixed.
In the described kinematics pattern that rotates counterclockwise with device, according to H П p, the finishing cycle is timed device and is set at 5～10 minutes.H П p for bigger value sets the longer cycle.The finishing cycle in clockwise kinematics pattern also is timed device and sets.Plan to make device to commutate so that grinding-material forces mixing (recovery of its cutting ability), therefore increased the productivity ratio of finishing, the polishing on mill surface is enhanced, and therefore the further needed time of operation of mill is reduced when grinding.
Pressure be predetermined to be make guarantee dressing tool continuously and be 0.1～0.5kgf/cm on the overall average area on the annular surface
2A value.
In cycle period several times, carry out the finishing of setting pattern, between different circulations, measure shape and flatness value.
Along with the shape of mill near desirable shape: dressing tool is reversed, with flatness and the planar parallelism (Fig. 5 and 6) that keeps described tool work surface.
Therefore, use order permutation technology obtains high flatness, in some cases, can obtain the convexity (concavity) of mill working surface.
According to method required for protection, the cycle-index that is identified for repairing can be determined by experiment easily.
Claims (1)
1. method of mill being repaired with two-lap lapping machine, according to this method, dressing tool is set between the mill and is in planetary motion, and the axis that makes mill center on them rotates in horizontal plane;
It is characterized in that: utilize the dressing tool of gear shape to repair, an end face of its middle gear is continuous, and another end face has annular projection; The external diameter of selection tool working surface makes it equal 1.00～1.01 times of mill width, selects the width of annular surface projection, makes it equal 0.2～0.3 times of mill working surface; Initial period is located dressing tool like this, makes the convex surface of its continuous operation surface in the face of a mill, and mill is alternately rotated in the clockwise direction with counterclockwise; Detect the nonflatness value between each circulation, the dressing tool that overturns then, employed grinding-material are that granularity is 2～3 times of the initial nonflatness value of mill.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2001118127 | 2001-06-29 | ||
| RU2001118127/02A RU2202462C2 (en) | 2001-06-29 | 2001-06-29 | Method for dressing laps in two-disc lapping machine tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1394718A true CN1394718A (en) | 2003-02-05 |
| CN1168575C CN1168575C (en) | 2004-09-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB02125110XA Expired - Fee Related CN1168575C (en) | 2001-06-29 | 2002-06-28 | Method for repairing and maintaining grinding board by using double-board grinding machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1168575C (en) |
| RU (1) | RU2202462C2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106312818A (en) * | 2016-09-23 | 2017-01-11 | 江苏吉星新材料有限公司 | Dressing method for ceramic disc for grinding |
| CN108312081A (en) * | 2018-04-13 | 2018-07-24 | 中国工程物理研究院激光聚变研究中心 | Cyclic spring polishing tool |
| CN108500397A (en) * | 2018-06-09 | 2018-09-07 | 盐城哈力动力传动及智能装备产业研究院有限公司 | A kind of fine module gear burr remover and its processing method |
| CN113263377A (en) * | 2021-05-26 | 2021-08-17 | 浙江金昌弹簧有限公司 | Spring grinding machine |
| CN113927376A (en) * | 2021-10-20 | 2022-01-14 | 国网福建省电力有限公司 | Vibration control method and device based on busbar contact surface polishing tool |
| CN114211398A (en) * | 2021-12-23 | 2022-03-22 | 新乡日升数控轴承装备股份有限公司 | Synchronous dressing method for upper grinding disc and lower grinding disc of double-sided grinding machine |
| CN115256233A (en) * | 2022-08-18 | 2022-11-01 | 福建晶安光电有限公司 | Disc surface finishing process of double-sided grinding machine table |
| CN116460667A (en) * | 2022-12-30 | 2023-07-21 | 北京创思工贸有限公司 | Processing method of calcium fluoride optical part |
-
2001
- 2001-06-29 RU RU2001118127/02A patent/RU2202462C2/en not_active IP Right Cessation
-
2002
- 2002-06-28 CN CNB02125110XA patent/CN1168575C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106312818A (en) * | 2016-09-23 | 2017-01-11 | 江苏吉星新材料有限公司 | Dressing method for ceramic disc for grinding |
| CN108312081A (en) * | 2018-04-13 | 2018-07-24 | 中国工程物理研究院激光聚变研究中心 | Cyclic spring polishing tool |
| CN108500397A (en) * | 2018-06-09 | 2018-09-07 | 盐城哈力动力传动及智能装备产业研究院有限公司 | A kind of fine module gear burr remover and its processing method |
| CN113263377A (en) * | 2021-05-26 | 2021-08-17 | 浙江金昌弹簧有限公司 | Spring grinding machine |
| CN113263377B (en) * | 2021-05-26 | 2022-03-04 | 浙江金昌弹簧有限公司 | Spring grinding machine |
| CN113927376A (en) * | 2021-10-20 | 2022-01-14 | 国网福建省电力有限公司 | Vibration control method and device based on busbar contact surface polishing tool |
| CN114211398A (en) * | 2021-12-23 | 2022-03-22 | 新乡日升数控轴承装备股份有限公司 | Synchronous dressing method for upper grinding disc and lower grinding disc of double-sided grinding machine |
| CN115256233A (en) * | 2022-08-18 | 2022-11-01 | 福建晶安光电有限公司 | Disc surface finishing process of double-sided grinding machine table |
| CN116460667A (en) * | 2022-12-30 | 2023-07-21 | 北京创思工贸有限公司 | Processing method of calcium fluoride optical part |
| CN116460667B (en) * | 2022-12-30 | 2023-11-07 | 北京创思工贸有限公司 | Processing method of calcium fluoride optical part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1168575C (en) | 2004-09-29 |
| RU2202462C2 (en) | 2003-04-20 |
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