CN104476380A - Cylindrical surface grinding process for graphite thrust pad of thrust bearing of shielded motor - Google Patents
Cylindrical surface grinding process for graphite thrust pad of thrust bearing of shielded motor Download PDFInfo
- Publication number
- CN104476380A CN104476380A CN201410783756.8A CN201410783756A CN104476380A CN 104476380 A CN104476380 A CN 104476380A CN 201410783756 A CN201410783756 A CN 201410783756A CN 104476380 A CN104476380 A CN 104476380A
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- CN
- China
- Prior art keywords
- carbon
- tile fragment
- point
- thrust
- grinding
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Classifications
-
- 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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/02—Lapping machines or devices; Accessories designed for working surfaces of revolution
-
- 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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/005—Control means for lapping machines or devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to a cylindrical surface grinding process for a graphite thrust pad of a thrust bearing of a shielded motor. Cylindrical surface grinding of the graphite thrust pad is conducted by using a grinding plate and a supporting plate, and the flatness of the grinding plate is checked; the plane of the grinding plate is ground by using a grooved grinding disc; stainless washers are placed between left and right legs of the grinding plate and the supporting plate and bolts are tightened to enable the grinding plate to produce elastic deformation to form certain radian; the graphite thrust pad is ground on the grinding plate, and whether the radian of the grinding plate is proper or not is checked by checking the cylindrical surface of the graphite thrust pad; the thickness of the stainless steel washers is adjusted and grinding is conducted again until an acceptable cylindrical surface of the graphite thrust pad is obtained. The cylindrical surface grinding process for the graphite thrust pad of the thrust bearing of the shielded motor can realize the large-size cylindrical surface grinding of the graphite thrust pad, the relative height tolerance of each measuring point of the cylindrical surface is controlled within +/-0.005mm, a layer of lubricating water film can be formed during forward and reverse rotation of the motor through the cylindrical surface of the graphite thrust pad, and thus the safety performance of a unit and the service life of the shielded motor are greatly improved.
Description
Technical field: the present invention relates to a kind of shield electric machine thrust bearing carbon, C thrust tile fragment cylinder grinding technics.
Background technology: along with development and the application of nuclear power technology, npp safety is updated and improved, and large-scale canned-motor pump will be used widely.For improving unit safety performance, this canned-motor pump requires that motor can realize rotating, existing shield electric machine thrust bearing adopts plane eccentrically braces structure, its tiling is plane, at side chamfering as water inlet, the thinner pressure of this type of wedge block delivery port moisture film is larger, so support zone can be partial to delivery port, this supporting form determines that it can only singlely turn to, rotating can not be realized, and existing shield electric machine is generally small-sized shield electric machine, tile fragment is less, because tile fragment is graphite material, its coefficient of expansion is lower than the Wa Ji of metal material, watt base back side generally can have brace groove or counterbore, so support zone metal material is thinner, non-supported position metal material is thicker, under motor ruuning situation, watt base different-thickness position the expansion produced in various degree can cause watt base plane injustice of support tile fragment because material thickness is different, plane watt cannot compensate Wa Jiyin and to expand the distortion caused, but because its tile fragment is less negligible, but the large-scale canned-motor pump be applied in nuclear power plant now cannot ignore this details, because thrust bearing shoe valve is larger, if so do not consider to compensate, then likely cause load diatibution uneven, affect unit safety performance, the above existing small-sized shield electric machine carbon, C thrust watt every deficiency can be made up in this thrust graphite tile fragment large size column face structure, because tiling is cylinder, water inlet is consistent with delivery port moisture film pressure, central supported can be adopted, the rotating of such motor just can realize, the distortion that watt Base Metal thicker in central supported both sides causes because of expansion also can be offset by cylinder, for realizing the carbon, C thrust tile fragment manufacturing this optimization, need to adopt new large scale cylinder grinding technics.
Summary of the invention: the object of this invention is to provide a kind of shield electric machine thrust bearing carbon, C thrust tile fragment cylinder grinding technics, solve thrust graphite tile fragment large size column face grinding technics problem, thrust graphite tile fragment cylinder grinding after can ensure cylinder each measurement point relative altitude allowance control within 0.005mm and cylinder without concave point, thus ensure that shield electric machine rotating all can form lubricating water film, substantially increase unit safety performance and ensure that service life of shield electric machine.Technical scheme of the present invention is:
1, a shield electric machine thrust bearing carbon, C thrust tile fragment cylinder grinding technics, is characterized in that: use carbon, C thrust tile fragment (6) to grind at abrasive sheet (1), said method comprising the steps of:
A) check abrasive sheet (1) flatness, use fastening bolt (3) by fastening to abrasive sheet (1) and gripper shoe (2), measure abrasive sheet (1) flatness;
If b) abrasive sheet (1) flatness that a) detects of operating procedure is poor, fluting abrasive disk (4) is used to coordinate grinding agent and abrasive sheet (1) to research abrasive sheet (1) flatness again mutually;
C) between the arranged on left and right sides supporting leg and gripper shoe (2) of abrasive sheet (1), uniform thickness stainless steel gasket (5) is placed and fastening bolt (3), make abrasive sheet (1) plane produce elastic deformation and form certain radian, stainless steel gasket thickness (5) will at the laggard Row sum-equal matrix of subsequent authentication work;
D) use carbon, C thrust tile fragment (6) to grind on abrasive sheet (1), whether suitablely examine abrasive sheet (1) radian by detection carbon, C thrust tile fragment (6) cylinder;
E) by regulating step c) operation in stainless steel gasket (5) thickness and repeat steps d) operation until obtain satisfactory carbon, C thrust tile fragment (6) cylinder, carbon, C thrust tile fragment (6) cylinder testing requirement is as follows: carbon, C thrust tile fragment (6) cylinder divides 9 measurement points, top measurement point A, D, A1,3 are positioned on same pitch circle, A, A1 point is equidistant apart from dual-side, and D point is positioned on carbon, C thrust tile fragment (6) center line, middle part measurement point B, E, B1,3 are positioned on same pitch circle, and B, B1 point is apart from dual-side equidistant and distance and top measurement point A, A1 point to side apart from consistent, and E point is carbon, C thrust tile fragment (6) central point, bottom measurement point C, D1, C1,3 are positioned on same pitch circle, C, C1 point apart from the equidistant and distance of dual-side and top measurement point A, A1 point consistent to side distance, D1 point is positioned on carbon, C thrust tile fragment (6) center line, first with D during measurement, D1, B, B1 leveling carbon, C thrust tile fragment (6), then by the relative altitude of laser scanning measurement each point apart from E at zero point, this relative altitude should be consistent with the calculated value of carbon, C thrust tile fragment (6) R500m cylinder each point, deviation allows within ± 0.005mm, and should be smooth without obvious concave point through laser scanning carbon, C thrust tile fragment (6) cylinder cross section radian, carbon, C thrust tile fragment (6) cylinder longitudinal cross-section should be straight without obvious convex-concave point, if reach above measurement to require, this block meets the requirements through the carbon, C thrust tile fragment (6) of grinding.
Shield electric machine carbon, C thrust tile fragment carrying axial thrust, if cylinder Grinding Quality not Gao Zehui causes rotor axial load diatibution inequality to cause motor unstable, unit safety cannot be ensured like this, adopt existing plane graphite tile fragment grinding technics cannot realize the grinding of carbon, C thrust tile fragment large scale cylinder, a kind of shield electric machine thrust bearing carbon, C thrust tile fragment cylinder grinding technics of the present invention, abrasive sheet generation elastic deformation is in various degree made by adjustment support pad thickness, graphite tile fragment cylinder size on abrasive sheet after grinding is effectively guaranteed, ensure that its each measurement point relative altitude and theoretical value relative altitude deviation to control within ± 0.005mm and no concave-convex point, carbon, C thrust tile fragment through grinding can carry axial force uniformly, offset the dilatancy of Wa Jiyin thickness difference and generation, achieve motor positive and inverse.
Accompanying drawing explanation
Fig. 1 is abrasive sheet plane monitoring-network schematic diagram.
Fig. 2 is that abrasive sheet flatness repairs schematic diagram.
Fig. 3 is that abrasive sheet forms elastic deformation schematic diagram.
Fig. 4 is thrust graphite tile fragment grinding schematic diagram.
Wherein: abrasive sheet 1, gripper shoe 2, bolt 3, fluting abrasive disk 4, stainless steel gasket 5, carbon, C thrust tile fragment 6.
Detailed description of the invention
As shown in Figure 4, a kind of shield electric machine thrust bearing carbon, C thrust tile fragment cylinder grinding technics, uses carbon, C thrust tile fragment 6 to grind at abrasive sheet 1, said method comprising the steps of:
A) check abrasive sheet 1 flatness, use fastening bolt 3 by fastening to abrasive sheet 1 and gripper shoe 2, measure abrasive sheet 1 flatness, see accompanying drawing 1;
If abrasive sheet 1 flatness b) operating a detection is poor, uses fluting abrasive disk 4 to coordinate grinding agent and abrasive sheet 1 to research multiple abrasive sheet 1 flatness mutually, see Fig. 2;
C) between abrasive sheet 1 left and right sides supporting leg and gripper shoe 2, place uniform thickness stainless steel gasket 5 fastening bolt 3 make abrasive sheet 1 plane produce elastic deformation to form certain radian, stainless steel gasket thickness 5 at the laggard Row sum-equal matrix of subsequent authentication work, will be shown in Fig. 3;
D) use carbon, C thrust tile fragment 6 to grind on abrasive sheet 1, whether suitablely examine abrasive sheet 1 radian by detection carbon, C thrust tile fragment 6 cylinder, see Fig. 4;
E) by regulating stainless steel gasket 5 thickness and repetition d operation in c operation until obtain satisfactory carbon, C thrust tile fragment 6 cylinder, to see Fig. 3, Fig. 4;
Described steps d) carbon, C thrust tile fragment 6 abrasive sheet 1 carry out grinding back pressure graphite tile fragment 6 cylinder each measurement point relative altitude tolerance can be controlled in ± 0.005mm within.
Claims (2)
1. a shield electric machine thrust bearing carbon, C thrust tile fragment cylinder grinding technics, is characterized in that: use carbon, C thrust tile fragment (6) to grind at abrasive sheet (1), said method comprising the steps of:
A) check abrasive sheet (1) flatness, use fastening bolt (3) by fastening to abrasive sheet (1) and gripper shoe (2), measure abrasive sheet (1) flatness;
If b) abrasive sheet (1) flatness that a) detects of operating procedure is poor, fluting abrasive disk (4) is used to coordinate grinding agent and abrasive sheet (1) to research abrasive sheet (1) flatness again mutually;
C) between the arranged on left and right sides supporting leg and gripper shoe (2) of abrasive sheet (1), uniform thickness stainless steel gasket (5) is placed and fastening bolt (3), make abrasive sheet (1) plane produce elastic deformation and form certain radian, stainless steel gasket thickness (5) will at the laggard Row sum-equal matrix of subsequent authentication work;
D) use carbon, C thrust tile fragment (6) to grind on abrasive sheet (1), whether suitablely examine abrasive sheet (1) radian by detection carbon, C thrust tile fragment (6) cylinder;
E) by regulating step c) operation in stainless steel gasket (5) thickness and repeat steps d) operation until obtain satisfactory carbon, C thrust tile fragment (6) cylinder, carbon, C thrust tile fragment (6) cylinder testing requirement is as follows: carbon, C thrust tile fragment (6) cylinder divides 9 measurement points, top measurement point A, D, A1,3 are positioned on same pitch circle, A, A1 point is equidistant apart from dual-side, and D point is positioned on carbon, C thrust tile fragment (6) center line, middle part measurement point B, E, B1,3 are positioned on same pitch circle, and B, B1 point is apart from dual-side equidistant and distance and top measurement point A, A1 point to side apart from consistent, and E point is carbon, C thrust tile fragment (6) central point, bottom measurement point C, D1, C1,3 are positioned on same pitch circle, C, C1 point apart from the equidistant and distance of dual-side and top measurement point A, A1 point consistent to side distance, D1 point is positioned on carbon, C thrust tile fragment (6) center line, first with D during measurement, D1, B, B1 leveling carbon, C thrust tile fragment (6), then by the relative altitude of laser scanning measurement each point apart from E at zero point, this relative altitude should be consistent with the calculated value of carbon, C thrust tile fragment (6) R500m cylinder each point, deviation allows within ± 0.005mm, and should be smooth without obvious concave point through laser scanning carbon, C thrust tile fragment (6) cylinder cross section radian, carbon, C thrust tile fragment (6) cylinder longitudinal cross-section should be straight without obvious convex-concave point, if reach above measurement to require, this block meets the requirements through the carbon, C thrust tile fragment (6) of grinding.
2. a kind of shield electric machine thrust bearing carbon, C thrust tile fragment cylinder grinding technics according to claim 1, is characterized in that: described steps d) carbon, C thrust tile fragment (6) abrasive sheet (1) carry out grinding back pressure graphite tile fragment (6) cylinder each measurement point relative altitude tolerance can be controlled in ± 0.005mm within.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410783756.8A CN104476380B (en) | 2014-12-17 | 2014-12-17 | Shield electric machine thrust bearing carbon, C thrust tile fragment cylinder grinding technics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410783756.8A CN104476380B (en) | 2014-12-17 | 2014-12-17 | Shield electric machine thrust bearing carbon, C thrust tile fragment cylinder grinding technics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104476380A true CN104476380A (en) | 2015-04-01 |
| CN104476380B CN104476380B (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410783756.8A Active CN104476380B (en) | 2014-12-17 | 2014-12-17 | Shield electric machine thrust bearing carbon, C thrust tile fragment cylinder grinding technics |
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| CN (1) | CN104476380B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290952A (en) * | 2015-11-05 | 2016-02-03 | 哈尔滨电气动力装备有限公司 | Tool device for grinding of cambered surface of bearing bush of large shielded motor |
| CN114309739A (en) * | 2021-12-16 | 2022-04-12 | 哈尔滨电气动力装备有限公司 | Machining process for thrust tile base of shielding motor |
| CN114658763A (en) * | 2022-03-04 | 2022-06-24 | 大连三环复合材料技术开发股份有限公司 | Composite material sliding bearing |
Citations (6)
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| DE2902798A1 (en) * | 1978-01-27 | 1979-08-02 | Gkn Group Services Ltd | METHOD OF MANUFACTURING FLEXIBLE BEARING BUSHINGS AND DEVICE FOR USE IN MANUFACTURING FLEXIBLE BEARING BUSHINGS |
| CN2573151Y (en) * | 2002-10-11 | 2003-09-17 | 孔帕克特工具股份有限公司 | Grinding tool for machining concave-convex face |
| CN101856798A (en) * | 2010-04-21 | 2010-10-13 | 宝山钢铁股份有限公司 | Thrust bearing shoe sharpening machine and repair method |
| CN201824258U (en) * | 2010-09-10 | 2011-05-11 | 宝山钢铁股份有限公司 | Abrasive disc for restoring surfaces of bearing pads |
| CN201872077U (en) * | 2010-10-19 | 2011-06-22 | 天津市天发重型水电设备制造有限公司 | Grinding device of upper and lower guide bearing bushes of hydro-power generating unit generator |
| WO2014124614A1 (en) * | 2013-02-15 | 2014-08-21 | Froněk Petr | Sender, especially for sending curved surfaces |
-
2014
- 2014-12-17 CN CN201410783756.8A patent/CN104476380B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2902798A1 (en) * | 1978-01-27 | 1979-08-02 | Gkn Group Services Ltd | METHOD OF MANUFACTURING FLEXIBLE BEARING BUSHINGS AND DEVICE FOR USE IN MANUFACTURING FLEXIBLE BEARING BUSHINGS |
| CN2573151Y (en) * | 2002-10-11 | 2003-09-17 | 孔帕克特工具股份有限公司 | Grinding tool for machining concave-convex face |
| CN101856798A (en) * | 2010-04-21 | 2010-10-13 | 宝山钢铁股份有限公司 | Thrust bearing shoe sharpening machine and repair method |
| CN201824258U (en) * | 2010-09-10 | 2011-05-11 | 宝山钢铁股份有限公司 | Abrasive disc for restoring surfaces of bearing pads |
| CN201872077U (en) * | 2010-10-19 | 2011-06-22 | 天津市天发重型水电设备制造有限公司 | Grinding device of upper and lower guide bearing bushes of hydro-power generating unit generator |
| WO2014124614A1 (en) * | 2013-02-15 | 2014-08-21 | Froněk Petr | Sender, especially for sending curved surfaces |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290952A (en) * | 2015-11-05 | 2016-02-03 | 哈尔滨电气动力装备有限公司 | Tool device for grinding of cambered surface of bearing bush of large shielded motor |
| CN114309739A (en) * | 2021-12-16 | 2022-04-12 | 哈尔滨电气动力装备有限公司 | Machining process for thrust tile base of shielding motor |
| CN114309739B (en) * | 2021-12-16 | 2023-09-29 | 哈尔滨电气动力装备有限公司 | Processing technology of thrust tile base of shielding motor |
| CN114658763A (en) * | 2022-03-04 | 2022-06-24 | 大连三环复合材料技术开发股份有限公司 | Composite material sliding bearing |
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| Publication number | Publication date |
|---|---|
| CN104476380B (en) | 2016-11-16 |
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