WO2005105375A1 - 大型部品の研磨装置および研磨方法 - Google Patents
大型部品の研磨装置および研磨方法 Download PDFInfo
- Publication number
- WO2005105375A1 WO2005105375A1 PCT/JP2004/006161 JP2004006161W WO2005105375A1 WO 2005105375 A1 WO2005105375 A1 WO 2005105375A1 JP 2004006161 W JP2004006161 W JP 2004006161W WO 2005105375 A1 WO2005105375 A1 WO 2005105375A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polishing
- abrasive
- polished
- abrasive particles
- polishing apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/18—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions
- B24C3/20—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions the work being supported by turntables
- B24C3/24—Apparatus using impellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
- B24C9/003—Removing abrasive powder out of the blasting machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
- B24C9/006—Treatment of used abrasive material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/002—Cleaning of turbomachines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/005—Repairing methods or devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/10—Manufacture by removing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/10—Manufacture by removing material
- F05D2230/14—Micromachining
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/90—Coating; Surface treatment
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Definitions
- the present invention relates to a polishing apparatus and a polishing method for a large-sized component, which blasts abrasive particles having an elastic body as a nucleus on a surface of a large-sized structural component such as a steam turbine component, and collides and blasts the particles.
- the above-mentioned turbine parts are manufactured through a number of processes.
- finishing is performed through the stator blade cutting process, assembling process, welding process, heat treatment process, and polishing process.
- the process is completed through a number of processes, including the final finishing process and the inspection process.
- surface roughness is reduced or flaws are caused by handling and preparation work between processes, and the surrounding environment. Are forced to occur.
- it is difficult to completely polish the entire surface because of the curved shape.
- FIG 11 is a bird's-eye view schematically showing the entire turbine rotor.
- the turbine rotor 101 has an outer diameter in the axial direction. Dozens of stages from the first stage to the second stage are implanted.4 In each stage, several tens to hundreds of blades 102 are implanted in the direction of the rotor shaft 104, with bearings at both ends. The structure is supported by the part 104a.
- the turbine 101 is covered by a casing 103 that forms seven passages by these moving blades and a stationary blade described later.
- FIG. 12 is a detailed view showing a section of FIG. 11 in a sectional view, in which a nozzle diaphragm 110 is disposed in a casing 103 and planted in a turbine rotor 101.
- the steam is configured to flow in the direction of the arrow shown in the figure in the steam passage formed between the moving blades 102 and o
- FIG. 13A is a plan view of the nozzle diaphragm 110, and FIG.
- FIG. 13B is a view of the cross section in the (Si direction) of Fig. 13A viewed from the outer side.
- the above-mentioned stator vane 105 is determined by the inflow characteristics of the steam flow as shown in Fig. 13 3.
- the stationary vane 105 has a curved surface portion 109 that forms the outer shape of the diaphragm inner ring 106 and the diaphragm outer ring 1
- Reference numeral 108 denotes a seal fin mounting groove, which is a seal fin for preventing steam from leaking between the rotating turbine rotor 101 and the diaphragm inner ring 106. It is attached when a housing (not shown) is installed in the casing 103.
- the surface roughness of the curved surface portion 109 of the stator vane 105 and the surface roughness of the stator vane 105 side of the diaphragm inner ring 106 and the diaphragm outer ring 107 is an area that particularly affects turbine performance. And actual operation tests.
- the number of stator vanes 105 is clearly determined from the turbine output characteristics (that is, steam flow rate) from Fig. 13A, and each vane has a fixed gap between the outer ring and inner ring of the Kuzno-re-dial diaphragm. Because it can be mounted, it is extremely narrow and has a complicated shape
- the wing 102 does not show its detailed cross-sectional shape, but has a three-dimensional curved surface shape that is twisted like a stationary blade, and each wing has a different wing shape for each paragraph. They are made of sand, sandpaper, etc., and are hand-polished by Aire and polished. Especially for rotor blades
- one piece has a length of more than 1 m, so it is unexpected for main work, setup change, handling, and transport between each process. O The occurrence of scratches, oxidation scale, etc.
- the surface condition is too rough, and it is difficult to achieve the above-mentioned surface roughness for ensuring turbine performance. Not suitable as a lifting tool.
- a centrifugal force is applied to the abrasive grains by rotating the impeller, so that the abrasive grains are polished in a direction tangential to the peripheral surface of the impeller.
- the surface is polished or ground by spraying on a member (for example, see JP-A-11-3477).
- this polishing device is suitable for polishing small members such as dental prostheses, it is large like a turbine part, and at the same time, its shape due to the characteristics of steam inflow. Extremely complex and narrow-to be used as is for polishing the surface of parts I can not do such a thing
- the purpose of the present invention is to enable uniform polishing of the surface including narrow portions and fitting portions that are difficult to grind, and to mechanize polishing work for a long time, a long time, and a rough surface.
- a polishing apparatus and a polishing method for a large part capable of improving the quality of non-crushing inspection and improving the polishing efficiency by removing the oxide film on the surface without lowering the surface roughness. It is here.
- the present invention provides a method for polishing a large component, which blasts abrasive particles having an abrasive as a nucleus at a predetermined speed as an abrasive, and collides the abrasive particles with a surface to be polished of a large portion no.
- a rotary table driven to be rotated by a drive motor at time t.
- An abrasive supply means for supplying the abrasive to a predetermined location; and an impeller for rotating the abrasive particles supplied from the iu abrasive supply at least by being rotated by an impeller drive motor.
- the lubrication particles collected during polishing of lu-sized large parts are collected and HU Configuration to which an abrasive recovery hand Komu feed re Pi to feeding means.
- the present invention provides a method for polishing a large portion by the following steps in order to achieve the above-mentioned object. That is, a polishing material containing abrasive particles having a core as a polishing material at a predetermined speed is used. In the method for polishing a large component, which is blasted by colliding the abrasive grains with the surface to be polished of the large component, a large component to be polished is determined in advance. Mounting the mounted large part, rotating the mounted large part, storing the abrasive particles temporarily, and supplying the abrasive particles from the abrasive particle storing step.
- the present invention makes it possible to polish a surface including a narrow part and a fitting part which are difficult to grind, such as a large-sized part such as a turbine nozzle, a rotor blade and a large-sized rotating part, such as a turbine rotor. It is possible to mechanize polishing work in a bad environment and remove the oxide film without reducing the surface roughness, thereby improving the quality of nondestructive inspection and improving the polishing work efficiency. You.
- FIG. 1 is a front view showing a first embodiment of a large component polishing apparatus according to the present invention.
- FIG. 2 is a plan view of the same embodiment.
- FIG. 3A is a side view of the injection head portion of the embodiment viewed from the direction of the arrows along the line ⁇ — ⁇ in FIG. 1, and FIG. 3B is the same.
- the injection head portion is rotated 90 degrees. The figure which shows the state performed.
- FIG. 4 shows a second embodiment of the polishing apparatus for large parts according to the present invention.
- FIG. 5 is an Ih view of the same embodiment.
- FIG. 6A is a view showing a state in which the polishing apparatus main body according to the embodiment is lowered to a position below the stationary blade, and the inner peripheral portion of the outer periphery of the nozzle die diaphragm and the lower half of the stationary blade plate are polished.
- Fig. 6A is an enlarged view of part A of Fig. 6A.
- FIG. 7A shows a state in which the polishing apparatus body is raised to the upper position of the stationary blade in the same manner, and the outer peripheral portion of the inner surface of the nozzle diaphragm and the upper half of the stationary blade are polished
- FIG. 7B is a view showing FIG. 7A. The figure which expands and shows the B section of FIG.
- FIG. 8 is a side view showing a third embodiment of the polishing apparatus for large parts according to the present invention.
- FIG. 9 is a bird's-eye view showing a fourth embodiment of the polishing apparatus for large parts according to the present invention.
- FIG. 10 is a bird's-eye view showing a modification of the embodiment.
- FIG. 11 is a bird's-eye view schematically showing the entire turbine port.
- FIG. 12 is a detailed view showing a cross section of one paragraph of FIG. 11.
- Fig. 13A is a plan view showing the stationary blade
- Fig. 13B is a view showing the new circumferential force of the stationary blade in Fig. 13A
- FIG. 1 is a front view showing a first embodiment of a large component polishing apparatus according to the present invention
- FIG. 2 is a plan view of the same embodiment.
- reference numeral 1 denotes a movable carriage that can move along the rail 2 in the Z-axis direction (perpendicular to the paper surface).
- a stand 3 is mounted vertically.
- a mapper support 4 is mounted on 3 so that it can move in the Y-axis direction (vertical direction on the paper).
- a manipulator 5 moves on the manipulator support 4 in the X-axis direction (paper 3 ⁇ 4 left and right direction).
- the movable vehicle 1 which is supported so that it can be supported.
- the manipulator support part 4 and the manipulator 5 are driven in respective directions by drive sources (not shown).
- Reference numeral 6 denotes a polishing head attached to the tip of the printer 5 via a bracket 7, and the polishing head 6 is mounted on the bracket 7 as shown in FIGS. 3A and 3B.
- the horizontal turning drive motor 8 is supported so as to be able to turn horizontally (rotation around the ⁇ axis), and is supported by the raising drive motor 9 so as to be able to swing. It constitutes the device body.
- the polishing head 6 includes a case 10, an impeller drive motor 11 supported on a top surface of the case 10 via a support member, and an impeller drive motor 1.
- An impeller drive motor 1 High-speed swivel driven by 1 1 2 Recovery hook 13 installed near this 12 and supported downward from the bottom of case 10
- a gutter-shaped injection nozzle 14 is provided.
- 15 is a polishing head, and is placed on a rotating surface with the support plate attached to the plurality of legs 16 on the base surface corresponding to the work area by 6
- a table 18 with a collection tank is mounted on the upper surface of the rotary tape holder 15 by a rotating tape driven and rotated by a drive motor 17.
- This tape with collection tank 18 allows large-sized parts to be opened at the top opening of the hopper 19, and allows abrasive particles to pass through to the hopper 19 side.
- a functioning metal-shaped component mounting plate 20 is provided, and an outlet 21 through which abrasive particles flow out is provided at the bottom of the hopper 19.
- Reference numeral 22 denotes a horizontal duct portion 22a disposed in a space below the rotary table 15 and an inclined duct which is set up at a predetermined angle from the horizontal duct portion 22a to a predetermined height.
- the duct 22 is a duct composed of a force.
- the duct 22 is supported by a support member 23 via a support arm 23a at a plurality of portions of the inclined duct portion 22b.
- the duct 22 includes a plurality of guide wheels 24 provided on the horizontal duct portion 22a side and a plurality of drive wheels 25 provided on the upper portion of the inclined duct portion 22b.
- An endless conveyor 27 that circulates and moves via the guide roller 26 is provided.o
- the surface of the endless belt 27 receives abrasive particles that fall through the outlet 21 of the hopper 19.
- a plurality of receiving shelves 27a made of elastic members for preventing the abrasive grains from sliding down during the ascending movement in the inclined duct portion 22b are attached at appropriate intervals.
- reference numeral 28 denotes one end connected to an outlet portion 29 provided on the lower surface of the horizontal portion located on the upper part of the inclined duct portion 22b, and the other end thereof has a collection hopper 1 for the polishing head 6 at the other end.
- the flexible tube connected to the upper part of the case 10 corresponding to 3 is a flexible tube connected to the upper end of the inclined duct portion 22b from the endless competition 27. Abrasive grains that fall through outlet 29
- 30 is a dust collector connected to a hopper 19 of a table 18 with a collection tank via a suction pipe 31. During collection, the dust collector 30 is used to remove dust and dirt mixed in when polishing the turbine parts.
- Reference numeral 32 denotes a tape holder with a collection tank and a polishing pad above the head, and a canvas or vinyl sheet provided to surround the moving space of the head. Use a dustproof power pad.
- Nozzle frame 1 10 which is one of the turbines, is fixed as a large part P on the PB mounting plate 20 in a state where it is kept horizontal by the fixing bracket 33
- abrasive grains having an elastic body as a nucleus are previously contained in the collection hopper 13 of the grinding and the work 6 as an abrasive.
- the movable trolley 1 is moved from the position indicated by the two-dot chain line (retreat position) shown in FIG. Move in the Z-axis direction so that it is located right beside the attached table 18 ⁇ Then, move the manifold 5 in the X-axis direction and the Y-axis direction to move the polishing head 6 to the nozzle holder. Move it so that it is above frame 1 1 0
- the impeller 1 2 is rotated at high speed by the impeller 1 drive motor 11.
- the abrasive grains in the collection hopper 13 of the nozzle 6 are passed through the injection nozzle 14 by the high-speed rotation of the impeller 12 to be polished.
- a large number of fuels are jetted at a speed higher than 1000 m.
- the horizontal rotating motor 8 rotates the polishing head 6 as a whole, and at the same time, swings and rotates the supporting nozzle 9 to rotate the injection nozzles 14 while keeping the injection nozzles 14 stationary.
- the rotary tape holder 15 is turned by the drive motor 17 so that the table 18 with the recovery tank turns while maintaining the horizontal position.
- the abrasive grains that have finished polishing the surface of the stationary blade 105 fall into the hono 19 through the snow-shaped part P mounting plate 20 of the tape 18 with the collection tank. Then, the hopper 19 is collected on the conveyor 27 through the outlet 21 of the hopper 19. In this case ⁇ , even if foreign matter other than abrasive particles such as metal powder generated during polishing of the turbine component is mixed in the hocker 0 19, they are sucked by the dust collector 30.
- the end member 27 is circulating between the guy wheel 24 by the drive 5 which is turned by the motor. Therefore, the granules collected on the ',' »and end conveyors 27 are transported through the horizontal duct part 22a and the inclined duct part 22b of the duct 22 and are inclined. 2 Drops into flexible tube 28 from P outlet 29 at the top of b
- the mapper 5 is moved in the X-axis direction and the Y-axis direction, and the polishing head is used, and the nozzle 6 is used as the nozzle diaphragm.
- a table 18 with a collection tank is arranged on a rotating table 15 that rotates in a horizontal manner, and a bin component is mounted on the upper surface thereof.
- the P-mounting plate 20 is shaped like a muzzle, it can be inserted as needed during work.
- the present embodiment Is not always necessary for the polishing operation.
- the material is not limited to canvas, but may be a screen-like material made of violet sheet or metal resin.
- the polishing pad 6 is provided at the tip of the manipulator 5, but instead of the mapper, various multi-joints (for example, 6 axes) are used as moving means. It is possible to realize the polishing described above by using a configuration in which the polishing head 6 is provided first at the node of the port.
- the tape 18 with the collection tank is arranged on the rotating tape holder 15 rotating while maintaining the horizontal state.
- a horizontal type it is a table with a slight inclination angle, and the polishing tank with a collection tank attached on it is a polishing head, and the abrasive particles ejected from the polishing head can be collected O
- the polishing head, the motors of No. 6, and the rotation speed are controlled so that automatic control such as NC program control and remote control using a computer can be performed. It is also possible to use in advance the drive motor of Table 5 as a motor such as a pulse motor that can perform fine rotation position control.
- FIG. 4 is a side view showing a second embodiment of the apparatus for polishing large parts according to the present invention
- FIG. 5 is a front view of the apparatus.
- reference numeral 41 denotes a truck equipped with a lifter provided with a caster at the bottom, and a polishing machine body 42 is mounted on the truck 41 equipped with a V-footer.
- the polishing apparatus main body 42 includes a collection tank 45 for collecting abrasive grains 44 having elastic bodies as nuclei as abrasives in a case 43.
- a vertical transport belt mechanism 4 6 that transports the abrasive grains 4 4 in the collection tank 4 5 over the appropriate height above it 4 6
- the impeller 48 and the tangential direction of the impeller 48 indicate the polishing direction of the workpiece.
- a gutter-shaped injection nozzle 49 that makes the abrasive grains 44 shoot at high speed is provided.
- the vertical transport belt mechanism 46 and the guide belt mechanism 47 are driven by a drive motor (not shown).
- the rotary tape holder 53 is rotatably supported in the vertical direction via a support member, and the rotation of the drive motor 55 mounted on the fixed base 54 by the rotary table drive mechanism 52.
- Nozzle diaphragm 110 which is a turbine part, is one of the large parts on the plate surface of rotary table 53.
- Reference numeral 57 denotes a frame with casters.
- the frame 57 is provided with a dustproof bar 58 provided with a fastener.
- the dustproof force bar 58 is provided. , So that it can be put in and out o
- the inner peripheral surface of the diaphragm outer ring 1 0 7 and the lower half of the stationary vane plate are polished, and the main body 42 of the polishing machine as shown in Fig. As shown in FIG. 7B, the inner peripheral surface of the diaphragm inner ring 106 and the upper half of the stator vane plate can be polished as shown in FIG. 7B.
- the abrasive grains 44 which have finished polishing by colliding with the surface of the nozzle diaphragm 110, slide down the inclined plate 51 from the lower guide 50 and are collected in the collection tank 45. Is done.
- Nozzle diaphragm 110 is attached to rotating table holder 53 supported rotatably in the vertical direction via a support member by support member 52 with fixing bracket 56 Then, while rotating the rotary table 53 as needed, the polishing device mounted on the lifter-equipped truck 41 is moved upward from the collection tank 45 of the main body 42 by the vertical transport belt mechanism 46.
- the conveyed abrasive grains 44 are supplied to an impeller 47 rotating at a high speed so that they impinge on the surface rather than the injection nozzles 49, so that the injection nozzles 4 greatly affect the injection energy.
- the nozzle diaphragm 110 which is one of the large parts, can be efficiently polished without changing the size.
- the polishing apparatus main body 42 is raised or lowered by the cart 41 with a lifter, and the position of the injection port of the injection nozzle 49 and the injection angle are set to the polishing position of the nozzle diaphragm 110.
- the adjustable configuration enables efficient and reliable surface polishing, including in narrow areas where it is difficult to polish, and fittings.
- the abrasive grains after the parts are polished are collected in the collection tank 45 by sliding down the inclined plate 51, so that the abrasive grains can be effectively used, and the economy can be improved. Not only is this advantageous, but also the time for collecting and re-feeding the abrasive can be omitted.
- FIG. 8 is a side view showing a third embodiment of the polishing apparatus for large components according to the present invention.
- reference numeral 61 denotes a truck with a lifter provided with casters at a lower portion, and a polishing apparatus main body 62 is mounted on the truck with a lifter 61.
- the main body of the polishing apparatus 62 includes an inner tank 6 for storing abrasive grains 6 4 having an elastic body as a polishing material in a case 63 having an injection mechanism housing portion 63 a extending horizontally in an upper portion thereof. 5.
- the vertical transport belt mechanism 66 that transports the abrasive grains 64 in the internal tank 65 to an appropriate height above it, and the internal tank 65 by the vertical transport belt mechanism 66
- Transport belt mechanism 67 that transports the abrasive grains 64 transported from the upper side to the injection mechanism storage section 63a side, and is provided in parallel along the horizontal transport belt mechanism 67, and Rotation of abrasive grains 6 4
- Two impellers 68 that give energy and a gutter-shaped spray nozzle 69 that sprays abrasive grains 64 at high speed from the tangential direction of each impeller 68 are provided! / Puru.
- Reference numeral 7 is driven by a drive motor (not shown), and two drivers 68 are each driven by a drive motor (not shown) at high speed.
- the part composed of the impeller 168, the drive motor and the injection nozzle 69 shown in the drawing is referred to as an injection mechanism 69 a.
- reference numeral 70 denotes a support base, on which a rotary table 71 is horizontally supported and rotated by a drive motor (not shown).
- the rotary table 71 is provided with a plurality of through-holes 72 in a circumferential direction outside of a center portion, and a nozzle die as a turbine component is provided along the vicinity of the positions of the through-holes 72.
- the frame 110 is fixed by the fixing bracket 73.
- Reference numeral 74 denotes a frame with a caster, and a frame 74 with a caster has an abrasive grain receiving portion which covers the lower part of the rotary table 71.
- a collection hopper 75 having a 75 a is attached, and a collection tank 76 is attached to an outlet of the collection hopper 75.
- the frame 74 with a caster is equipped with a dustproof par 77 with a fastener as an opening.
- the rotary table 71 and the nozzle diaphragm 1 10 The structure is such that the object can be moved in and out as well as covering the whole.
- Reference numeral 78 denotes an abrasive supply / recovery unit provided near the polishing apparatus main body 62.
- the abrasive grains 64 are strongly ejected in the tangential direction of the impellers 68, and are passed through the ejection nozzles 69 to reduce the nozzle diameter. It collides with the inner peripheral side of the ram outer ring 107, the outer peripheral side of the nozzle dial inner ring 106 and the surface of the stationary vane 105 at a speed of approximately 100 Om / min or more.
- the two impellers 168 and the injection nozzle 69 allow the outer circumference of the inner ring of the nozzle diaphragm and the noise to be reduced. This makes it possible to simultaneously grind the inner side wall and stationary vane of the slide diaphragm outer ring.
- the abrasive grains 64 which have been polished by colliding with the surface of the nozzle die frame 110, pass through the through-holes 72 provided in the rotary table 71, and are stored in the collection hopper 75. To the collection tank 76 from the outlet.
- the abrasive particles 64 collected in the collection tank 76 are collected through an abrasive supply / collection unit 78 through a collection hose 79b, and then supplied to a supply hose 79a.
- the polishing liquid is supplied into the internal tank 65 of the polishing apparatus main body 62 through the filter, and the polishing operation similar to that described above is performed cyclically.
- the turntable 71 rotates sequentially according to the polishing state of the material to be polished.
- one nozzle vane 105 of the nozzle die diaphragm 110 or the nozzle ring inner ring 106 near the stationary blade of this nozzle blade, the outer circumference and the inner circumference of the nozzle ring outer ring 107 Polishing is When it is finished, the stationary blade 1 in the nozzle
- the horizontal In contrast to the nozzle dial 110 fixed on the rotating table 7 1, the two impellers 68 and the injection nozzle 69 provide a nozzle dial inner ring. Since the outer peripheral side of 106 and the inner peripheral side of the outer ring of the nozzle diaphragm 107 and the stationary blades 105 are simultaneously polished, the injection nozzle 69 is fixed in the tangential direction of the impeller 168. Even with this method, it is possible to efficiently grind a large-diameter turbine part, a nozzle diaphragm.o
- the polished grains are BX-polished on a rotating table 71, collected through a C-shell through-hole 72, collected in a collection hopper 75, collected in a collection tank 76, and then supplied and collected with an abrasive. Since it is collected at 78 and supplied again to the internal tank 65 of the polishing apparatus main body 62, it is possible to effectively use the abrasive grains #, which is not only economically advantageous, but also The time for collecting and re-feeding the abrasive material can be omitted. Further, since the tape holder on which the abrasive material is placed is the rotary table 71, the injection nozzle 69 can be used as a nozzle diaphragm 110.
- polishing of all vanes 105 is possible without moving in the angle direction of. Therefore, the impeller 168, which has a complicated structure such as a structure for transporting the abrasive grains 64, does not need to be a movable structure in the circumferential direction, and can be configured with a relatively simple structure.
- the diameter of the injection nozzle 69 is considered in consideration of the fact that a nozzle diaphragm 110 of a different shape is mounted on the rotary table 71. It can move in the direction (Fig. 8 left and right on the paper).
- a control device (not shown)
- the rotating table 71 is automatically rotated by a certain angle after a certain time. By performing such control, the polishing of one nozzle diaphragm 110 can be completely polished.
- the dust-proof cover 77 may prevent the abrasive particles 64 itself and the abrasives adhered to the abrasive particles 64 and metal powder polished from the abrasive from scattering to the surroundings.
- the injection mechanism housing 63 a is provided with an opening through which the injection mechanism housing 63 a can be carried inside the canopy, such as a vinyl nozzle, canvas or screen-shaped plate.
- FIG. 9 is a bird's-eye view showing a fourth embodiment of the polishing apparatus for large parts according to the present invention.
- reference numeral 80 denotes a stand installed at an appropriate distance on a base 81 also serving as a collection hopper, and a roller support provided on each of these stands 80.
- the turbine rotor 101 is rotatably supported.
- Reference numeral 83 denotes a lifter with wheels that can move in the axial direction along a Lenore 84 laid on a base 81 on one side of the turbine rotor 101.
- a polishing device body 85 is mounted on 83.
- the main body 85 of the polishing apparatus sprays the impeller from the tangential direction of the impeller, which gives rotational energy to the abrasive grains, and which is not shown.
- a gutter-shaped jet that ejects the abrasive particles to be ejected toward the rotating blades 102 of the turbine rotor 101, which is the polishing part, while moving the abrasive particles that are ejected by an injection nozzle slide mechanism (not shown) in the radial direction of the turbine rotor. Equipped with injection nozzle.
- reference numeral 86 is connected to a base 81, which also serves as a collection hopper, via a collection tube 87, and is used for collecting abrasive particles that fall on the collection hopper after polishing the rotor blades 102.
- the abrasive supply / collection unit 86 removes foreign matter from the collected abrasive particles, and then passes through a flexible tube 89 connected via a dust collector 88. It is supplied to the polishing device body 85.
- the dust collecting and collecting unit 88 is configured to separate and collect the foreign matter collected together with the abrasive grains by the abrasive grain supply / collection unit 86.
- Reference numeral 90 denotes an air compressor.
- An air receiver tank 91 is connected to the air compressor 90, and driving force is supplied to the dust collector / collector 88 and the abrasive particle supply / collection unit 86. After the polishing of the rotor blades is completed, compressed air is blown onto the turbine rotor 101 and the rotor blades 102 to adhere to the abrasive particles and abrasive particles adhering to them. Abrasive materials and metal powder from polishing are scattered.
- Reference numeral 92 denotes a dustproof cover that covers the outer periphery of the turbine rotor 101 and the entire polishing apparatus body 85.
- the rotating blade is polished by a large-sized roller horizontally mounted on a roller supporting and rotating mechanism 82.
- the abrasive grains are polished from the injection nozzle of the polishing device main body 85 at a speed of more than 100 m / min. It is polished by spraying and colliding with the surface.
- the lifter mechanism with wheels 83 moves the rails 84 to move the injection nozzles of the polishing apparatus body 85 to the next stage.
- the polishing surface of rotor blade 102 is polished as described in [in] above.
- the turbine rotor is removed.
- the injection nozzle position of the polishing apparatus main body 85 is moved in the radial direction of the turbine rotor and also in the axial direction of the turbine. It is intended to be polished.
- the abrasive particles after polishing are collected in a hopper and supplied to an abrasive particle supply / collection unit 86 and then supplied to a re-polishing device ii body 85, so that the abrasive particles can be effectively used. Not only economically advantageous, but also eliminates the time to collect and re-use abrasive particles What you do is power ⁇
- the turbine port which is a large rotating component, is used.
- polishing apparatus main body 85 is provided on one side of 101
- the polishing apparatus main body 8 mounted on a movable cart having a caster structure on both sides of the bin 100 with the bin 1 1 5 and the position of the injection nozzle is not traced
- the 84 may be positioned on the bogie in the predetermined rotor blade position so that the area in charge of injection can be simultaneously polished.
- the entire polishing apparatus for large parts is Bxm in a place such as a factory.
- the above-described polishing apparatus and peripheral equipment are separated as shown in FIG. It is also possible to carry out polishing work on turbine 101 on site by keeping it on the roller 93.
- the setup time can be minimized, and at the same time, the space for the repair area on site can be minimized, and the polishing operation can be performed more efficiently. Therefore, the repair and inspection period of the existing turbine unit can be shortened. Especially effective for medium-to-small bottles
- ⁇ one type of abrasive grain was used.
- the degree of surface damage, the degree of deterioration, or the degree of oxidation scale can be reduced.
- the size and material of the abrasive grains may be changed depending on the presence or absence.
- an impeller for applying rotational energy to the abrasive grains, and an injection nozzle for injecting the abrasive grains to the surface to be polished from a tangential direction of the impeller.
- a polishing head with a knurl was used, a plurality of apertures were arranged along the outer peripheral surface of the impeller, and an endless movable between the rollers by the rotation of the impeller.
- a polishing head is provided so that the belt covers the outer peripheral surface of the impeller except for the abrasive particle injection opening, and the abrasive particles are tangent to the impeller from the abrasive particle injection opening.
- a polishing head configured to directly spray the surface to be polished from the direction may be used.
- the abrasive grains can be jetted to the surface to be polished in the same manner as described above without the jet nozzle.
- the nozzle die diaphragm / turbine rotor is described as the material to be polished.
- the components are not limited to the bin components, and may be any components having a shape that can be placed on the rotary table or the rotary mechanism described in each embodiment, and are not particularly limited.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/006161 WO2005105375A1 (ja) | 2004-04-28 | 2004-04-28 | 大型部品の研磨装置および研磨方法 |
| CNA2004800201749A CN1822920A (zh) | 2004-04-28 | 2004-04-28 | 大型零件抛光设备和抛光方法 |
| AU2004319041A AU2004319041B2 (en) | 2004-04-28 | 2004-04-28 | Device and method for polishing large part |
| US11/313,696 US7455570B2 (en) | 2004-04-28 | 2005-12-22 | Large part polishing apparatus and polishing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/006161 WO2005105375A1 (ja) | 2004-04-28 | 2004-04-28 | 大型部品の研磨装置および研磨方法 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/313,696 Continuation US7455570B2 (en) | 2004-04-28 | 2005-12-22 | Large part polishing apparatus and polishing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005105375A1 true WO2005105375A1 (ja) | 2005-11-10 |
Family
ID=35241497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/006161 Ceased WO2005105375A1 (ja) | 2004-04-28 | 2004-04-28 | 大型部品の研磨装置および研磨方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7455570B2 (ja) |
| CN (1) | CN1822920A (ja) |
| AU (1) | AU2004319041B2 (ja) |
| WO (1) | WO2005105375A1 (ja) |
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| CN102725107A (zh) * | 2010-10-27 | 2012-10-10 | 新东工业株式会社 | 喷丸加工装置 |
| CN118219145A (zh) * | 2024-05-08 | 2024-06-21 | 杭州电子科技大学 | 一种智能化加工多表面尾翼复杂结构零件的化学机械抛光设备及方法 |
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| DE102015212502A1 (de) * | 2015-07-03 | 2017-01-05 | Siemens Aktiengesellschaft | Verfahren zum Reinigen einer Radscheibenanordnung und/oder an dieser gehaltener Schaufeln |
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- 2004-04-28 WO PCT/JP2004/006161 patent/WO2005105375A1/ja not_active Ceased
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| CN102725107B (zh) * | 2010-10-27 | 2014-03-19 | 新东工业株式会社 | 喷丸加工装置 |
| CN118219145A (zh) * | 2024-05-08 | 2024-06-21 | 杭州电子科技大学 | 一种智能化加工多表面尾翼复杂结构零件的化学机械抛光设备及方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2004319041A1 (en) | 2005-11-10 |
| US7455570B2 (en) | 2008-11-25 |
| US20060111025A1 (en) | 2006-05-25 |
| AU2004319041B2 (en) | 2008-11-06 |
| CN1822920A (zh) | 2006-08-23 |
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