CN112404891B - Positioning tool assembly and machining method for main bearing of generator - Google Patents
Positioning tool assembly and machining method for main bearing of generator Download PDFInfo
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- CN112404891B CN112404891B CN202011125943.9A CN202011125943A CN112404891B CN 112404891 B CN112404891 B CN 112404891B CN 202011125943 A CN202011125943 A CN 202011125943A CN 112404891 B CN112404891 B CN 112404891B
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- positioning
- main bearing
- plate
- inner ring
- oil injection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/18—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
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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
- B24B27/00—Other grinding machines or devices
- B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
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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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
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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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H7/00—Marking-out or setting-out work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to the field of wind motors, and discloses a positioning tool assembly which comprises a marking tool and a punching tool, wherein the marking tool comprises two positioning columns which are arranged in parallel, a first positioning beam and a second positioning beam are connected between the two positioning columns, and the first positioning beam, the second positioning beam and the two positioning columns are enclosed into a polishing area; the punching tool comprises a positioning plate, a plurality of limiting through holes are formed in the positioning plate, a lifting mechanism is installed at the bottom of the positioning plate, a positioning rod is installed on the positioning plate, and the length of the positioning plate is matched with the distance between every two adjacent oil holes. The grinding area and the drilling area on the surface of the inner ring of the main bearing of the permanent magnet generator can be effectively positioned, so that the grinding and mounting areas are uniformly distributed in the axial direction and the angle of the inner surface of the main bearing. A processing method of a generator main bearing can effectively process the surface of an inner ring of a permanent magnet generator main bearing, and does not affect the rotation performance while improving the surface heat dissipation performance.
Description
Technical Field
The invention relates to the field of wind motors, in particular to a positioning tool assembly and a machining method of a generator main bearing.
Background
Permanent magnet generator is the generator type that wind power generation is commonly used, its main bearing outer loop is fixed, the inner ring is located axial one side coaxial even has the ring flange, the ring flange is used for being connected with the wind wheel, the axial opposite side of inner ring even has the brake disc, and be equipped with and be used for embracing with the brake disc complex and inlay the mechanism, for the convenience of installation and use, the internal diameter of ring flange and brake disc all is less than the main bearing internal diameter, consequently, can form round annular space between ring flange and brake disc, outside wind pressure blows the wind wheel and rotates, then drive main bearing inner ring pivoted in-process, ball continuous motion between main bearing inner ring and the outer loop, it needs the discharge to produce a large amount of heat energy urgent, consequently, need install radiating fin in the annular space that forms between ring flange and brake disc, but can meet following problem during the installation: (1) The surface of the inner ring of the main bearing is coated with a paint layer, the heat conducting property of the paint layer is poor, and the heat in the main bearing is not favorably discharged, so that the paint layer at the position where a fin needs to be installed on the surface is required to be polished, but the uniformity of axial and angular distribution during polishing cannot be ensured and the uniformity of installation of a plurality of fins cannot be ensured due to the fact that the surface of the inner ring of the main bearing is a cambered surface, so that the stress condition during rotation of the inner ring is influenced, shaking or swinging is caused, and safety accidents are caused in the past; (2) Because the surface of the inner ring of the main bearing is uniformly provided with a plurality of oil injection holes along the cambered surface, the oil injection holes are easy to damage or block when the fins are polished and installed.
The present application is made in view of this feature.
Content of application
The invention aims to provide a positioning tool assembly which can effectively position a grinding area and a drilling area on the surface of an inner ring of a main bearing of a permanent magnet generator, so that the grinding and mounting areas are uniformly distributed in the axial direction and the angle of the inner surface of the main bearing.
The invention also provides a method for processing the main bearing of the generator, which can effectively process the surface of the inner ring of the main bearing of the permanent magnet generator, improve the surface heat dissipation performance and simultaneously have no influence on the rotation performance.
The embodiment of the application is realized by the following technical scheme:
a positioning tool assembly comprises a scribing tool and a punching tool, wherein the scribing tool comprises two positioning columns which are arranged in parallel, the lengths of the positioning columns are matched with the distance between a flange plate of a main bearing and a brake disc, the distance between the two positioning columns is matched with the distance between two adjacent oil injection holes of an inner ring of the main bearing, a first positioning beam and a second positioning beam are connected between the two positioning columns, and a polishing area is defined by the first positioning beam, the second positioning beam and the two positioning columns; punching frock includes the locating plate, and the locating plate is opened has a plurality of spacing through-holes, and the locating plate bottom is equipped with and makes locating plate top and base bearing flange support tight elevating system, elevating system bottom and base bearing brake disc butt, and the locating plate is equipped with the locating lever, when locating plate top supports tightly with the ring flange, the locating lever coincides with the line of two adjacent oil filler points, the distance phase-match between locating lever length and two adjacent oil filler points.
Furthermore, the first positioning beam, the second positioning beam and the positioning plate are all arranged to be arc-shaped and matched with the surface of the inner ring of the main bearing.
Furthermore, the lifting mechanism comprises a lifting seat connected with the bottom of the positioning plate, the plane where the lifting seat is located is parallel to the positioning rod, two adjusting screw rods are symmetrically and rotatably connected to two sides of the lifting seat in the length direction of the positioning rod, the adjusting screw rods are perpendicular to the positioning rod, and the bottom of each adjusting screw rod is connected with a butting block.
Furthermore, the lifting seat is connected with the positioning plate in an L shape, and the adjusting screw is arranged on one side of the lifting seat, which is far away from the positioning plate.
Furthermore, the top of the positioning plate is connected with a plurality of inserting blocks, the inserting blocks are perpendicular to the positioning rod, and the thickness of each inserting block is matched with the distance between the head of a fixing bolt of the main bearing flange plate and the side wall of the inner ring of the main bearing.
A method for machining a main bearing of a generator comprises the following steps: s1, installing the scribing tool between any two adjacent oil injection holes, enabling two ends of a positioning column to be respectively abutted against a flange plate and a brake disc of a main bearing, enabling a second positioning beam of the scribing tool to be arranged close to the brake disc, scribing around a polishing area, and scribing between all the two adjacent oil injection holes by using the scribing tool; s2, polishing the surfaces of all polishing areas, and removing the surface paint layer to expose the metal layer; s3, arranging the punching tool between any two adjacent oil injection holes, enabling the top of the positioning plate to be abutted against a main bearing flange plate, enabling the connecting line of the positioning rod and the two oil injection holes to be overlapped, enabling two ends of the positioning rod to be respectively aligned with the corresponding oil injection holes, adjusting a lifting mechanism to enable the bottom of the lifting mechanism to be abutted against a main bearing brake disc, stretching a plurality of limiting through holes by using an electric drill to punch the surface of an inner ring of the main bearing, wherein the hole depth is 23-27mm, punching is carried out between all two adjacent oil injection holes by using the punching tool, and a fixing bolt is arranged in each hole; and S4, mounting a radiating fin between all the two oil injection holes which are adjacently arranged by utilizing a fixing bolt.
The positioning tool assembly provided by the invention has the beneficial effects that:
(1) Through setting up the marking off frock, and set up the reference column that the marking off frock includes two parallel arrangement, the length that sets up the reference column matches with the distance between ring flange and the brake disc, make two reference columns can parallel card between ring flange and brake disc, carry out preliminary axial location to the position of polishing, and match through the distance that sets up between two reference columns and the distance between two adjacent oil filler points, make two reference columns press from both sides just and establish between two oil filler points, thereby carry out the injecing on the angular position to the position of polishing, make a plurality of positions of polishing evenly distributed on 360. Through setting up first locating beam and second locating beam, establish the region of polishing with two reference columns jointly to carry out accurate axial positioning to the position of polishing.
(2) Through setting up the frock of punching, punch at the particular position in the region of polishing, it is with effective fixed radiating fin to facilitate the installation of fixing bolt, through setting up the locating plate, it is convenient fixed with the laminating of main bearing inner ring surface, through set up a plurality of spacing through-holes on the locating plate, it is spacing to punch the position, through setting up elevating system, make elevating system's top and locating plate be connected, bottom and brake disc butt, make locating plate top and ring flange support tightly through adjusting elevating system, thereby fix the support of locating plate between ring flange and brake disc, carry out the axial to the position of punching promptly and prescribe a limit to, through setting up the locating lever, make the length of locating lever and the distance phase-match between two adjacent oil filler holes, thereby can confirm whether the locating plate takes place the skew in the angular direction through the both ends of locating lever and the position relation of the oil filler hole that corresponds, then adjust the position of locating plate on the angular direction, when setting up locating plate top and ring flange support tightly, the line coincidence of locating lever and two oil filler holes, conveniently confirm the position relation of locating lever and oil filler hole.
(3) Through setting up lift seat and two independent adjusting screw, revolve to twist adjusting screw and can realize the lift of lift seat, drive the locating plate and go up and down, set up two positioning screw of symmetry, the high position of fine setting lift seat both sides that can be relatively independent makes the locating plate produce small rotation, drives the locating lever then and slightly rotates, makes the locating lever coincide completely with the line of two oil filler points of adjacent setting to spacing through-hole accurate positioning, promptly, to the punch position accurate positioning.
(4) Set up to "L" shape through seat and the locating plate that will go up and down, and connect adjusting screw soon in one side of keeping away from the locating plate at the seat that goes up and down, make the seat that goes up and down rise when revolving wrong adjusting screw, drive the locating plate top and support tight back with the ring flange, adjusting screw will lead to the junction of seat and locating plate to take place slight bending, make the angle between the two be less than 90, thereby make the junction produce pressure, compress tightly locating plate and base bearing inner ring surface, thereby promote the fixity ability of locating plate and base bearing, promote the precision of punching.
(5) Through the arrangement of the inserting block, the thickness of the inserting block is matched with the distance between the head of the fixing bolt of the flange plate and the side wall of the inner ring of the main bearing, and the ring of connecting holes are formed in the flange plate along the circumference, so that when the flange plate is connected with the wind wheel, one side, facing the brake disc, of the flange plate is exposed out of the head of the fixing bolt, the inserting block can be inserted into an annular gap between the head of the fixing bolt and the side wall of the inner ring of the main bearing, and the positioning plate is further fixed.
The processing method of the main bearing of the generator provided by the invention has the beneficial effects that: the surface of the inner ring of the main bearing of the permanent magnet generator can be effectively processed, the surface heat dissipation performance is improved, and the rotation performance is not influenced
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic view illustrating a layout of a scribing tool of a positioning tool assembly according to an embodiment of the present invention;
fig. 2 is a schematic setting diagram of a punching tool of the positioning tool assembly according to the embodiment of the present invention;
fig. 3 is a schematic side view of a punching tool of the positioning tool assembly according to the embodiment of the present invention.
Icon: 10-a positioning column; 11-a first positioning beam; 12-a second positioning beam; 13-grinding the area; 20-positioning a plate; 201-a limiting through hole; 21-a positioning rod; 22-a lifting seat; 221-adjusting screw; 222-a butting block; 23-insert block.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on that shown in the drawings or that the product of the application is used as it is, this is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.
In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Examples
Referring to fig. 1 to 3, the embodiment provides a positioning tool assembly, which includes a scribing tool and a punching tool, where the scribing tool includes two positioning columns 10 arranged in parallel, the length of each positioning column 10 matches with the distance between a flange of a main bearing and a brake disc, the distance between the two positioning columns 10 matches with the distance between two adjacent oil injection holes of an inner ring of the main bearing, a first positioning beam 11 and a second positioning beam 12 are connected between the two positioning columns 10, and a rectangular polishing area 13 is defined by the first positioning beam 11, the second positioning beam 12 and the two positioning columns 10; the frock of punching includes locating plate 20, and locating plate 20 is opened has a plurality of spacing through-holes 201, and spacing through-hole 201 is used for injecing the point of punching of electric drill, and 20 bottoms of locating plate are equipped with and make 20 tops of locating plate and the tight elevating system of main bearing ring flange support, and the elevating system bottom and main bearing brake disc butt, locating plate 20 are equipped with locating lever 21, and when 20 tops of locating plate and ring flange support tightly, locating lever 21 coincides with the line of two adjacent oil filler point, the distance phase-match between 21 lengths of locating lever and two adjacent oil filler points. Through setting up the marking off frock, and set up marking off frock and include two parallel arrangement's reference column 10, the length that sets up reference column 10 matches with the distance between ring flange and the brake disc, make two reference columns 10 can parallel card between ring flange and brake disc, carry out preliminary axial location to the position of polishing, and match through the distance that sets up between two reference columns 10 and the distance between two adjacent oil filler points, make two reference columns 10 press from both sides just and establish between two oil filler points, thereby carry out the injecing on the angular position to the position of polishing, make a plurality of positions of polishing at 360 last evenly distributed. Through the arrangement of the first positioning beam 11 and the second positioning beam 12, the polishing area 13 is maintained together with the two positioning columns 10, so that the polishing position is accurately and axially positioned. Through setting up the frock of punching, punch at the specific position in the region 13 of polishing, it is in order effectively to fix radiating fin to facilitate the installation fixing bolt, specifically, through setting up locating plate 20, it is convenient fixed with the laminating of main bearing inner ring surface, through set up a plurality of spacing through-holes 201 on locating plate 20, it is spacing to punch the position, through setting up elevating system, make elevating system's top and locating plate 20 be connected, bottom and brake disc butt, make locating plate 20 top and ring flange support tightly through adjusting elevating system, thereby support tightly fixing between ring flange and brake disc with locating plate 20, carry out the axial to the position of punching promptly and prescribe a limit to, through setting up locating lever 21, make the length of locating lever 21 and the distance phase-match between two adjacent oil filler points, thereby can confirm whether locating plate 20 takes place the skew in the angle direction through the position relation of the both ends of locating lever 21 and the corresponding oil filler point, then adjust locating lever 20 position on the angle direction, when locating lever 20 top and ring flange support tightly through setting up, locating lever 21 and two oil filler point, the line coincidence, conveniently confirm the position relation of locating lever 21 and oil filler point.
In order to facilitate the surface attachment of the scribing tool and the punching tool to the inner ring of the main bearing, the first positioning beam 11, the second positioning beam 12 and the positioning plate 20 are all arranged in an arc shape matched with the surface of the inner ring of the main bearing.
For further explanation, the lifting mechanism includes a lifting seat 22 connected to the bottom of the positioning plate 20, the plane of the lifting seat 22 is parallel to the positioning rod 21, two adjusting screws 221 are symmetrically screwed on two sides of the lifting seat 22 in the length direction of the positioning rod 21, the adjusting screws 221 are perpendicular to the positioning rod 21, and the bottom of the adjusting screws are connected to an abutting block 222. Through the above arrangement, screwing the adjusting screw 221 to realize the lifting of the lifting seat 22, driving the positioning plate 20 to lift, setting two symmetrical positioning screws 221, finely adjusting the height positions of two sides of the lifting seat 22 relatively independently, making the positioning plate 20 slightly rotate, then driving the positioning rod 21 to slightly rotate, making the connecting line of the positioning rod 21 and two adjacent oil holes overlapped completely, thereby accurately positioning the limiting through hole 201, namely, accurately positioning the punching position.
In order to further optimize the structure of the punching tool, the lifting seat 22 is connected with the positioning plate 20 in an L shape, and the adjusting screw 221 is arranged on one side of the lifting seat 22 away from the positioning plate 20. Set up to "L" shape through going up and down seat 22 and locating plate 20, and connect adjusting screw 221 soon in one side that locating plate 20 was kept away from to lift seat 22, it makes lift seat 22 rise to revolve wrong adjusting screw 221, drive the locating plate 20 top and the ring flange support the back tightly, adjusting screw 221 will lead to the junction of lift seat 22 and locating plate 20 to take place slight bending, make the angle between the two be less than 90, thereby make the junction produce pressure, compress tightly locating plate 20 and main bearing inner ring surface, thereby promote the fixity ability of locating plate 20 and main bearing, promote the precision of punching.
In order to further improve the fixing performance of the abutting part of the positioning plate 20 and the flange plate, the top of the positioning plate 20 is connected with a plurality of inserting blocks 23, the inserting blocks 23 are perpendicular to the positioning rods 21, and the thickness of the inserting blocks 23 is matched with the distance between the head of the fixing bolt of the main bearing flange plate and the side wall of the inner ring of the main bearing. Through setting up the inserted block 23, and make the thickness of inserted block 23 and the fixed bolt head of ring flange and the distance phase-match between the main bearing inner ring lateral wall, because open along the circumference on the ring flange has a round connecting hole, when the ring flange is connected with the wind wheel, one side of ring flange towards the brake disc exposes round fixed bolt head, and inserted block 23 can insert in the annular gap between fixed bolt head and the main bearing inner ring lateral wall to carry out further fixed to locating plate 20.
The embodiment also provides a method for machining the main bearing of the generator, which comprises the following steps:
s1, installing the scribing tool between any two adjacent oil injection holes, enabling two ends of a positioning column 10 to be respectively abutted against a flange plate and a brake disc of a main bearing, enabling a second positioning beam 12 of the scribing tool to be arranged close to the brake disc, scribing surrounding a polishing area 13, drawing an area needing polishing, then scribing by the scribing tool between all the adjacent two oil injection holes, so as to determine all polishing areas 13 distributed around a circle on the inner side wall of an inner ring of the main bearing, and then taking down the scribing tool. Through the step, all the grinding areas 13 are uniformly drawn on the inner side wall of the inner ring of the main bearing, so that the axial distribution positions of all the grinding areas 13 on the inner ring of the main bearing are the same, and the angular position distribution is uniform.
S2, polishing the surfaces of all the polishing areas 13, and removing the surface paint layer to expose the metal layer. The inner side wall of the inner ring of the main bearing is processed through the step, the surface paint layer is polished to be removed, and the metal layer is exposed, so that the heat conduction performance of the polishing area 13 is improved, the surface of the polishing area 13 is smooth, and the subsequent installation of the radiating fins is facilitated.
It should be noted that, in step S2, after polishing of one polishing area 13 is completed, the dust collector is required to treat polishing debris, and then the alcohol cleaning cloth is used to clean the polishing area until no obvious visible pollutants exist on the surface.
S3, locate between the oil filler point of arbitrary two adjacent settings with the above-mentioned frock of punching, make locating plate 20 top and main bearing ring flange butt make the line coincidence of locating lever 21 and two oil filler points to make locating lever 21 both ends align with the oil filler point that corresponds respectively, adjust elevating system makes elevating system bottom and main bearing brake disc support tightly, and it stretches into a plurality ofly to utilize the electric drill spacing through-hole 201 punches to the main bearing inner ring surface, and the hole depth 23-27mm prevents when this hole depth range compromises fixed strength that main bearing inner ring inside wall local stress is too big, and intensity flares inadequately. Then all utilize between two oil filler points of whole adjacent settings the frock of punching punches, then take off the frock of punching, at the downthehole fixing bolt that sets up of every punching. Through this step, punch and set up positioning bolt in the specific position in the regional 13 of polishing of completion of polishing, make positioning bolt along with regional 13 evenly distributed of polishing on the circumference of main bearing inner ring inside wall, lay the basis for follow-up evenly installed radiating fin then.
It should be noted that, in step S3, the cooling oil needs to be continuously used to spray the drilled hole during the drilling process, so as to continuously cool the drilled hole, thereby avoiding the influence on the rigidity of the inner side wall of the inner ring of the main bearing due to the overheating of the drill bit.
It should be noted that in the step S3, after the fixing bolt is set, the surface of the inner ring of the main bearing needs to be cleaned by using an alcohol watering can, the main bearing stands for 3-5min, the alcohol is completely evaporated, and in the cleaning process, an operator needs to wear a gas mask.
And S4, mounting a radiating fin between all the two oil injection holes which are adjacently arranged by utilizing a fixing bolt. Specifically, the base of the heat dissipation fin (on which a plurality of through holes are formed in one-to-one correspondence with the plurality of holes drilled in step S3) is attached to the polishing area 13, so that the plurality of through holes formed thereon correspond to the plurality of holes drilled in step S3 in significance, positioning bolts in the plurality of holes penetrate through the corresponding through holes, and then the base is fixed above the polishing area 13 through nuts. And then the radiating fin main body is arranged on the base.
It should be noted that the area of the base of the heat dissipation fin matches the area of the polishing area 13, and the bottom of the heat dissipation fin main body matches the surface of the base.
It should be noted that, in step S4, before the base is mounted, the bottom of the heat dissipation fin (i.e., the bottom of the base) is uniformly coated with the heat conductive adhesive, and before the heat conductive adhesive is coated, the heat conductive adhesive needs to be heated at 40-50 ℃ for 10-15min, so that the viscosity and the fluidity of the heat conductive adhesive are both in an ideal condition, and the coating time of the heat conductive adhesive is limited to 1-2min, thereby preventing the heat conductive adhesive from being cured.
Before the main body of the heat dissipation fin is installed, a layer of heat conduction silicone grease with the thickness of 180-200 micrometers is coated on the surface of the base, and then the main body of the heat dissipation fin is connected with the base.
After the step S4 is finished, cold spraying zinc for 2-3 times on the metal exposed area on the surface of the inner ring of the main bearing, wherein the spraying thickness is 200-220 micrometers.
In summary, the invention provides a positioning tool assembly, which is provided with a scribing tool, wherein the scribing tool comprises two positioning columns arranged in parallel, the length of each positioning column is matched with the distance between a flange and a brake disc, so that the two positioning columns can be clamped between the flange and the brake disc in parallel to perform primary axial positioning on a grinding position, and the distance between the two positioning columns is matched with the distance between two adjacent oil injection holes, so that the two positioning columns can be just clamped between the two oil injection holes, the grinding position is limited in the angular position, and a plurality of grinding positions are uniformly distributed in 360 degrees. Through the arrangement of the first positioning beam and the second positioning beam, the polishing area is jointly maintained with the two positioning columns, so that the polishing position is accurately and axially positioned. Through setting up the frock of punching, specific location in the region of polishing punches, it is with effective fixed radiating fin to facilitate the installation of fixing bolt, through setting up the locating plate, it is convenient fixed with the laminating of base bearing inner ring surface, through set up a plurality of spacing through-holes on the locating plate, it is spacing to punch the position, through setting up elevating system, make elevating system's top and locating plate be connected, bottom and brake disc butt, make locating plate top and ring flange support tightly through adjusting elevating system, thereby fix the support of locating plate between ring flange and brake disc, carry out axial limited to the punching position promptly, through setting up the locating lever, make the length of locating lever and the distance phase-match between two adjacent oil filler points, thereby can confirm whether the locating plate takes place the skew on the angle direction with the position relation of the oil filler point that corresponds through the both ends of locating lever, then adjust the position of locating plate on the angle direction, when setting up locating plate top and ring flange support tightly, the locating lever coincides with the line of two oil filler points, conveniently confirm the position relation of locating lever and oil filler point. Through setting up lift seat and two independent adjusting screw, revolve to twist adjusting screw and can realize the lift of lift seat, drive the locating plate and go up and down, set up two positioning screw of symmetry, the high position of fine setting lift seat both sides that can be relatively independent makes the locating plate produce small rotation, drives the locating lever then and slightly rotates, makes the locating lever coincide completely with the line of two oil filler points of adjacent setting to spacing through-hole accurate positioning, promptly, to the position of punching accurate positioning. Set up to "L" shape through going up and down seat and locating plate to connect adjusting screw soon in one side of going up and down the seat and keeping away from the locating plate, make the seat that goes up and down rise when revolving to twist adjusting screw, drive the locating plate top and support tight back with the ring flange, adjusting screw will lead to the junction of lift seat and locating plate to take place slight bending, make the angle between the two be less than 90, thereby make the junction produce pressure, compress tightly locating plate and main bearing inner ring surface, thereby promote the fixity ability of locating plate and main bearing, promote the punching precision. Through setting up the inserted block, and make the thickness of inserted block and the fixed bolt head of ring flange and the distance phase-match between the main bearing inner ring lateral wall, because open along the circumference on the ring flange has the round connecting hole, when the ring flange is connected with the wind wheel, one side that the ring flange was towards the brake disc exposes round fixed bolt head, and the inserted block can insert in the annular gap between fixed bolt head and the main bearing inner ring lateral wall to carry out further fixed to the locating plate.
The invention also provides a processing method of the main bearing of the generator, which can effectively process the surface of the inner ring of the main bearing of the permanent magnet generator, improves the surface heat dissipation performance and does not influence the rotation performance.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A positioning tool assembly is characterized by comprising a marking tool and a punching tool,
the scribing tool comprises two positioning columns (10) which are arranged in parallel, the length of each positioning column (10) is matched with the distance between a flange plate of a main bearing and a brake disc, the distance between the two positioning columns (10) is matched with the distance between two adjacent oil injection holes of an inner ring of the main bearing, a first positioning beam (11) and a second positioning beam (12) are connected between the two positioning columns (10), and a polishing area (13) is defined by the first positioning beam (11), the second positioning beam (12) and the two positioning columns (10);
the first positioning beam (11), the second positioning beam (12) and the positioning plate (20) are all arranged to be arc-shaped and matched with the surface of the inner ring of the main bearing;
the punching tool comprises a positioning plate (20), the positioning plate (20) is provided with a plurality of limiting through holes (201), the bottom of the positioning plate (20) is provided with a lifting mechanism which enables the top of the positioning plate (20) to be tightly abutted against a main bearing flange plate, the bottom of the lifting mechanism is abutted against a main bearing brake disc, the positioning plate (20) is provided with a positioning rod (21), when the top of the positioning plate (20) is tightly abutted against the flange plate, the positioning rod (21) is overlapped with a connecting line of two adjacent oil injection holes, and the length of the positioning rod (21) is matched with the distance between the two adjacent oil injection holes;
the lifting mechanism comprises a lifting seat (22) connected with the bottom of the positioning plate (20), the plane where the lifting seat (22) is located is parallel to the positioning rod (21), two sides of the lifting seat (22) in the length direction of the positioning rod (21) are symmetrically and rotatably connected with two adjusting screw rods (221), the adjusting screw rods (221) are perpendicular to the positioning rod (21), and the bottoms of the adjusting screw rods are connected with abutting blocks (222).
2. The positioning tool assembly according to claim 1, wherein the lifting seat (22) is connected with the positioning plate (20) in an L shape, and the adjusting screw (221) is arranged on one side of the lifting seat (22) away from the positioning plate (20).
3. The positioning tool assembly according to claim 1, wherein a plurality of insert blocks (23) are connected to the top of the positioning plate (20), the insert blocks (23) are perpendicular to the positioning rods (21), and the thickness of the insert blocks (23) is matched with the distance between the head of the fixing bolt of the main bearing flange and the side wall of the inner ring of the main bearing.
4. A method for machining a main bearing of a generator is characterized by comprising the following steps of:
s1, installing the scribing tool according to any one of claims 1 to 3 between any two adjacent oil injection holes, enabling two ends of a positioning column (10) to be respectively abutted against a flange plate of a main bearing and a brake disc, enabling a second positioning beam (12) of the scribing tool to be arranged close to the brake disc, scribing around a grinding area (13), and scribing between all the two adjacent oil injection holes by using the scribing tool;
s2, polishing the surfaces of all the polishing areas (13), and removing the surface paint layer to expose the metal layer;
s3, arranging the punching tool according to any one of claims 1 to 3 between any two adjacent oil injection holes, enabling the top of the positioning plate (20) to be abutted against a main bearing flange plate, enabling the positioning rod (21) to be overlapped with a connecting line of the two oil injection holes, enabling two ends of the positioning rod (21) to be respectively aligned with the corresponding oil injection holes, adjusting the lifting mechanism to enable the bottom of the lifting mechanism to be abutted against a main bearing brake disc, extending a plurality of limiting through holes (201) by using an electric drill to punch the surface of an inner ring of the main bearing, enabling the hole depth to be 23-27mm, punching by using the punching tool between all the two adjacent oil injection holes, and arranging a fixing bolt in each hole;
and S4, mounting a radiating fin between all the two oil injection holes which are adjacently arranged by utilizing a fixing bolt.
5. The machining method for the main bearing of the generator as claimed in claim 4, wherein in the step S3, after the fixing bolts are arranged, the surface of the inner ring of the main bearing is cleaned by using an alcohol watering can and is kept still for 3-5min.
6. The method for machining the generator main bearing as claimed in claim 4, wherein in the step S4, heat-conducting glue is evenly coated on the bottoms of the heat dissipation fins.
7. The method for processing the main bearing of the generator as claimed in claim 6, wherein the heat-conducting glue is heated for 10-15min at 40-50 ℃ and then coated for 1-2min.
8. The method for machining the generator main bearing as claimed in claim 4, wherein after the step S4 is completed, cold spraying zinc on the metal exposed area on the surface of the inner ring of the main bearing for 2-3 times, wherein the spraying thickness is 200-220 microns.
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| CN202011125943.9A CN112404891B (en) | 2020-10-20 | 2020-10-20 | Positioning tool assembly and machining method for main bearing of generator |
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| CN202011125943.9A CN112404891B (en) | 2020-10-20 | 2020-10-20 | Positioning tool assembly and machining method for main bearing of generator |
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