CN110524314B - Grinding method of rubber elastic material - Google Patents
Grinding method of rubber elastic material Download PDFInfo
- Publication number
- CN110524314B CN110524314B CN201910650735.1A CN201910650735A CN110524314B CN 110524314 B CN110524314 B CN 110524314B CN 201910650735 A CN201910650735 A CN 201910650735A CN 110524314 B CN110524314 B CN 110524314B
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- grinding
- aluminum alloy
- elastic material
- abrasive
- sand blasting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention belongs to the field of elastic material grinding, in particular to a grinding method of a rubber elastic material, and particularly relates to a grinding method of a rubber material, which comprises the following steps: step 1) preparing a grinding surface, and performing finish machining on an aluminum alloy plane to ensure that the flatness is below 0.002 mm; step 2) preparing a grinding surface by a sand blasting process, carrying out sand blasting treatment on the finely-machined aluminum alloy plane to ensure that the roughness of the aluminum alloy plane is not more than Ra8 micrometers, and removing burrs after the sand blasting treatment to obtain the grinding surface; and 3) grinding the rubber on the grinding surface, wherein an abrasive and a grinding liquid are used in grinding, the grain diameter of the abrasive is less than 0.015mm, and the hardness of the abrasive grain is more than 9 Mohs scale. The invention can grind and obtain the elastic material grinding plane with smooth surface, no bubble inclusion, no unevenness and other defects. The radial static seal structure is suitable for radial static seal, and the end face seal always adopts the same standard.
Description
Technical Field
The invention belongs to the field of elastic material grinding, in particular to a grinding method of a rubber elastic material, and particularly relates to a grinding method of a rubber material.
Background
The aerospace field requires seals with high dimensional tolerances, form and position tolerances, and excellent sealing surfaces to meet higher mechanical properties. Regarding the grinding of the end face of the rubber ring, reference technical data are not available at home, and the reference of the accuracy grade of the end face of the civil rubber ring is limited to the accuracy which can be achieved through a die or cutting. Therefore, to meet the technical requirements of the aerospace field on the end face precision of the rubber ring and the coupling sealing, the end face of the rubber ring needs to be subjected to secondary precision grinding processing so as to improve the precision grade of the end face of the rubber ring. The prior art is only limited to manual processing, the precision can be guaranteed, but the quality is uncontrollable, and the defects of continuous and repeated repairing, grinding and detecting exist.
The existing rubber ring end face grinding technology is mainly characterized in that 200# -400# silicon carbide polishing paper soaked by engine oil is pasted on a 200mm multiplied by 200mm platform, 20# engine oil and white corundum grinding paste with W40 granularity are added on the plane of the polishing paper, and the rubber ring is manually pressed to carry out circular motion track grinding. Utilize the abrasive material of sticking on the polishing paper to cut, the polishing paper of pasting easily takes place to slide under the effect of grinding thrust, leads to the rubber circle terminal surface atress uneven, and the abrasive material is piled up at the periphery, makes the rubber border edge collapse, and the plane degree is poor, and machining efficiency is low, and the rework rate is higher, realizes effectively that sealed the degree of difficulty is big, and is difficult for realizing batch production.
Disclosure of Invention
The purpose of the invention is as follows: the technical requirements of the aerospace field on the end face precision of the rubber ring and the coupling sealing are met, and the problem of high precision requirement of the end face of the rubber ring is solved. The rubber sealing element has high precision of dimensional tolerance, form and position tolerance and excellent sealing plane, so as to meet higher mechanical performance.
The technical scheme of the invention is as follows: provided is a method for grinding a rubber elastic material, comprising the steps of:
step 1) preparation of an abrasive surface
Performing finish machining on the plane of the aluminum alloy to ensure that the flatness is below 0.002 mm;
step 2) preparing an abrasive surface by a sand blasting process
Performing sand blasting treatment on the finely-machined aluminum alloy plane to ensure that the roughness of the aluminum alloy plane is not more than Ra8 mu m, and deburring the aluminum alloy plane after the sand blasting treatment to obtain a ground surface;
and 3) grinding the rubber on the grinding surface, wherein an abrasive and a grinding liquid are used in grinding, the grain diameter of the abrasive is less than 0.015mm, and the hardness of the abrasive grain is more than 9 Mohs scale.
Further, in the step 1) of preparing the grinding surface, the aluminum alloy plane is firstly processed by adopting a mirror grinding process, the flatness reaches 0.008mm-0.005mm, and then the aluminum alloy plane is finely ground by adopting a three-surface mutual method, so that the flatness of the flat plate is ensured to be below 0.002mm, preferably 0.002mm-0.001 mm.
Further, in the step 2) of preparing the grinding surface by the sand blasting process, the sand blasting particles are silicon carbide particles, the spraying angle is 45-60 degrees, the depth of a hardened layer is about 1. mm-1.5 mm, the surface roughness is Ra 4-Ra 8 microns, and natural oilstone is selected for deburring to uniformly grind the aluminum alloy plane.
Further, the sand blasting sand grains in the grinding surface prepared by the sand blasting process in the step 2) are selected in the range as follows: white corundum, brown corundum, silicon carbide, boron carbide, quartz sand, tungsten carbide, zirconia, synthetic diamond, and boron nitride.
Further, the elastic material is rubber.
Further, the grinding fluid is water or aviation kerosene.
Further, the abrasive is an oxidation-based abrasive, a carbonization-based abrasive, or a diamond-based abrasive.
Has the advantages that: the invention can grind and obtain the elastic material grinding plane with smooth surface, no bubble inclusion, no unevenness and other defects. The radial static seal structure is suitable for radial static seal, and the end face seal always adopts the same standard. Further, the use of an aluminum alloy flat plate is described. The aluminum alloy surface is easy to oxidize in the air to produce aluminum oxide, and the aluminum oxide is a high-quality grinding material, so that the grinding effect is further improved.
Drawings
FIG. 1 is a schematic view before grit blasting;
FIG. 2 is a schematic view after the sand blasting treatment.
Detailed Description
The following examples provide a method of grinding rubber, comprising the steps of:
step 1) preparation of an abrasive surface
Performing finish machining on the plane of the aluminum alloy to ensure that the flatness is below 0.002 mm;
step 2) preparing an abrasive surface by a sand blasting process
Performing sand blasting treatment on the finely-machined aluminum alloy plane to ensure that the roughness of the aluminum alloy plane is not more than Ra8 mu m, and deburring the aluminum alloy plane after the sand blasting treatment to obtain a ground surface;
and 3) grinding the rubber on the grinding surface, wherein an abrasive and a grinding liquid are used in grinding, the grain diameter of the abrasive is less than 0.015mm, and the hardness of the abrasive grain is more than 9 Mohs scale.
In the step 1) of preparing the grinding surface, the aluminum alloy plane is firstly processed by adopting a mirror grinding process, the flatness reaches 0.008mm-0.005mm, and then the aluminum alloy plane is finely ground by adopting a three-surface interaction method, so that the flatness of a flat plate is ensured to be below 0.002mm, preferably 0.002mm-0.001 mm.
And 2) in the process of preparing the grinding surface by the sand blasting process, the spraying angle is 45-60 degrees, the depth of a hardened layer is about 1-1.5 mm, the surface roughness is Ra 4-Ra 8 microns, and natural oilstone is selected for deburring to uniformly polish the aluminum alloy plane. The sand blasting particles are selected from the following ranges: white corundum, brown corundum, silicon carbide, boron carbide, quartz sand, tungsten carbide, zirconia, synthetic diamond, and boron nitride.
Claims (8)
1. A method of grinding a rubber elastic material, comprising the steps of:
step 1) preparation of an abrasive surface
Performing finish machining on the plane of the aluminum alloy to ensure that the flatness is below 0.002 mm;
step 2) preparing an abrasive surface by a sand blasting process
Performing sand blasting treatment on the finely-machined aluminum alloy plane to ensure that the roughness of the aluminum alloy plane is not more than Ra8 mu m, and deburring the aluminum alloy plane after the sand blasting treatment to obtain a ground surface;
and 3) grinding the rubber on the grinding surface, wherein an abrasive and a grinding liquid are used in grinding, the grain diameter of the abrasive is less than 0.015mm, and the hardness of the abrasive grain is more than 9 Mohs scale.
2. The method for grinding a rubber elastic material as set forth in claim 1, wherein: in the step 1) of preparing the grinding surface, the aluminum alloy plane is firstly processed by adopting a mirror grinding process, the flatness reaches 0.008mm-0.005mm, and then the aluminum alloy plane is finely ground by adopting a three-surface mutual method, so that the flatness of the aluminum alloy plane is ensured to be below 0.002 mm.
3. The method for grinding a rubber elastic material as set forth in claim 2, wherein: and finely grinding the aluminum alloy plane by adopting a three-surface mutual method, and ensuring that the flatness of the aluminum alloy plane is 0.002mm-0.001 mm.
4. The method for grinding a rubber elastic material as set forth in claim 1, wherein: and 2) in the preparation of the grinding surface by the sand blasting process, the sand blasting particles are silicon carbide particles, the spraying angle is 45-60 degrees, the depth of a hardened layer is about 1. mm-1.5 mm, the surface roughness is Ra 4-Ra 8 microns, and natural oilstone is selected for deburring to uniformly grind the aluminum alloy plane.
5. The method for grinding a rubber elastic material as set forth in claim 1, wherein: step 2) the sand blasting process is used for preparing the sand blasting sand grains in the grinding surface, and the selection range of the sand blasting sand grains is as follows: white corundum, brown corundum, silicon carbide, boron carbide, quartz sand, tungsten carbide, zirconia, synthetic diamond, and boron nitride.
6. The method for grinding a rubber elastic material as set forth in claim 1, wherein: the elastic material is rubber.
7. The method for grinding a rubber elastic material as set forth in claim 1, wherein: the grinding fluid is water or aviation kerosene.
8. The method for grinding a rubber elastic material as set forth in claim 1, wherein: the abrasive is an oxidation-based abrasive, a carbonization-based abrasive or a diamond-based abrasive.
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CN201910650735.1A CN110524314B (en) | 2019-07-18 | 2019-07-18 | Grinding method of rubber elastic material |
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CN110524314B true CN110524314B (en) | 2021-04-23 |
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Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2014057894A1 (en) * | 2012-10-10 | 2014-04-17 | 旭硝子株式会社 | Elastic grindstone dressing method |
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JP3926863B2 (en) * | 1995-12-12 | 2007-06-06 | 山名 勉 | Peripheral shaping method and apparatus for soft elastic plate |
TW394128U (en) * | 1999-06-16 | 2000-06-11 | Pacific Eagle Entpr Co Ltd | Apparatus for grinding rubber surface |
ES2487015B1 (en) * | 2013-02-15 | 2015-07-30 | Asociación De Investigación Metalúrgica Del Noroeste - Aimen | Sander machine for rubber components |
CN103264465B (en) * | 2013-05-27 | 2016-08-24 | 湖南天一制造技术有限公司 | A kind of preparation method of rubber pange ball |
CN104289992A (en) * | 2014-09-29 | 2015-01-21 | 四川氟迪新能源有限公司 | Edge grinding device of rubber edge grinding machine |
CN204339505U (en) * | 2014-12-26 | 2015-05-20 | 杭州越凯复合材料有限公司 | A kind of fixture of rubber ring of polishing |
CN106239291A (en) * | 2016-08-23 | 2016-12-21 | 湖北华宁防腐技术股份有限公司 | A kind of prevulcanized rubber plate automatically grinding device |
CN107756248A (en) * | 2017-11-28 | 2018-03-06 | 中国化工集团曙光橡胶工业研究设计院有限公司 | A kind of TR thin rubber articles dress machine |
CN208179169U (en) * | 2018-05-21 | 2018-12-04 | 重庆台圆橡塑科技有限公司 | A kind of grinding device of rubber ring |
CN109866106A (en) * | 2019-03-05 | 2019-06-11 | 哈尔滨汽轮机厂有限责任公司 | A kind of fixture of rubber bearing bush and method using fixture processing rubber bearing shell inner hole |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2014057894A1 (en) * | 2012-10-10 | 2014-04-17 | 旭硝子株式会社 | Elastic grindstone dressing method |
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