CN117862980B - Vacuum pump impeller shaft hole grinding device - Google Patents
Vacuum pump impeller shaft hole grinding device Download PDFInfo
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- CN117862980B CN117862980B CN202311691786.1A CN202311691786A CN117862980B CN 117862980 B CN117862980 B CN 117862980B CN 202311691786 A CN202311691786 A CN 202311691786A CN 117862980 B CN117862980 B CN 117862980B
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- shaped
- shaft hole
- impeller
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- 238000005498 polishing Methods 0.000 claims abstract description 171
- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 16
- 230000008093 supporting effect Effects 0.000 claims description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 18
- 239000000725 suspension Substances 0.000 claims description 14
- 244000137852 Petrea volubilis Species 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000003491 array Methods 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract description 12
- 238000012545 processing Methods 0.000 abstract description 10
- 238000005553 drilling Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 description 11
- 238000000429 assembly Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/48—Single-purpose machines or devices for grinding walls of very fine holes, e.g. in drawing-dies
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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
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
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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
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
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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
- B24B27/0092—Grinding attachments for lathes or the like
-
- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/35—Accessories
-
- 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
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/04—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of metal, e.g. skate blades
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention belongs to the technical field of polishing and processing, and particularly relates to a polishing device for an impeller shaft hole of a vacuum pump, which comprises a polishing table, wherein a protective cover is arranged above the polishing table, a bidirectional driving mechanism is arranged in the protective cover, a clamping mechanism for clamping an impeller is arranged on the upper surface of the polishing table, the polishing mechanism comprises arc polishing plates, connecting pipes and pushing expansion components, a plurality of arc polishing plates are circumferentially arranged on the outer ring surface, the end parts of the connecting pipes are provided with the pushing expansion components, a plurality of arc polishing plates which encircle a ring shape are attached to the shaft hole wall of the impeller under the expansion of the pushing expansion components, and strip polishing pieces are fixed on the outer ring surface of the arc polishing plate positioned at the top along the length direction of the strip polishing pieces; according to the invention, burrs generated after drilling on the hole wall of the shaft hole can be polished, and meanwhile, the key groove can be synchronously polished, so that the shaft hole polishing efficiency and polishing precision of the vacuum pump impeller can be improved.
Description
Technical Field
The invention belongs to the technical field of polishing processing, and particularly relates to a polishing device for a shaft hole of an impeller of a vacuum pump.
Background
When the center hole of the fan impeller shaft is machined, the center Kong Chaocha and the surface are provided with burrs or iron filings to generate jumping, so that the machining precision is reduced, waste products are easily generated, and the fan work is influenced. Therefore, before machining, the center hole of the fan impeller shaft needs to be ground and repaired by a grinding device, so that the process requirement is met.
The traditional grinding of the impeller shaft hole is performed manually or manually, the grinding efficiency of the impeller shaft hole is necessarily affected by the mode, and if the grinding is performed by adopting a mechanical grinding wheel, the grinding wheel is obviously inserted into the shaft hole to grind the hole wall of the impeller, but the grinding and deburring of the key groove formed in the hole wall are difficult, so that the key block can not be accurately installed in the key groove of the shaft hole, and the assembly precision of the impeller shaft and the impeller is affected.
Disclosure of Invention
In order to solve the technical problems, the invention is realized by the following technical scheme:
The invention relates to a grinding device for an impeller shaft hole of a vacuum pump, which comprises a grinding table, wherein a protective cover is arranged above the grinding table, a bidirectional driving mechanism is arranged in the protective cover, a clamping mechanism for clamping the impeller is arranged on the upper surface of the grinding table, grinding mechanisms are symmetrically arranged below the bidirectional driving mechanism, each grinding mechanism comprises an arc-shaped grinding plate, a connecting pipe and a pushing expansion assembly, a plurality of arc-shaped grinding plates are circumferentially arranged on the outer ring surface in an array manner, the end part of each connecting pipe is provided with the pushing expansion assembly, a plurality of arc-shaped grinding plates which are enclosed into a circular ring are attached to the shaft wall of the impeller under the expansion of the pushing expansion assembly and are used for grinding the shaft hole of the impeller, and a strip-shaped grinding piece is fixed on the outer ring surface of the uppermost arc-shaped grinding plate along the length direction of the strip-shaped grinding piece and is used for grinding a key groove of the shaft hole.
Further, grinding machanism still includes arc seat, folding shell fragment, backup pad, elastic plate, abrasive paper, circular telegram magnetic ring and metal hoop of polishing, two the connecting pipe symmetry sets up in clamping machanism's left and right sides, and the tip outer lane face circumference array that two connecting pipes are close to each other is fixed with a plurality of arc seat, every the outer lane face of arc seat is fixed with a plurality of folding shell fragments, is located same the outer lane tip of a plurality of folding shell fragments on the arc seat all is fixed with the backup pad, circumference array a plurality of at the connecting pipe outer lane face the outer lane face of backup pad all is connected with the arc and polishes the board, encloses into a plurality of circular shape the arc is polished and is connected through the elastic plate interconnect between the board, and the outer lane face of elastic plate installs abrasive paper of polishing, abrasive paper and the outer lane face of arc are located same periphery, and two of symmetry the connecting pipe are close to each other insulating respectively and are fixed with circular ring and metal hoop, two of connecting pipe's the face that is kept away from each other pushes away from pushes away and expands the subassembly, it is used for driving a plurality of to become annular impeller's the inner wall of laminating to polish the board.
Further, the pushing expansion assembly comprises a transmission rod, a rotating screw rod, a supporting frame, a nut seat, a conical cylinder and a guide sliding rod, wherein the two transmission rods are respectively and rotatably installed in a connecting pipe through bearings, the end faces, close to each other, of the two transmission rods are respectively and fixedly provided with an electrified magnetic ring and a metal iron ring in an insulating mode, the end faces, far away from each other, of the transmission rods are respectively fixedly provided with the rotating screw rod, the free ends of the two rotating screw rods are rotatably installed on the supporting frame, the rotation directions of the spiral lines of the two rotating screw rods are opposite, the nut seat is sleeved on the rotating screw rod, the conical cylinder is fixedly sleeved on the outer ring face of the nut seat, the end part with the minimum diameter of the conical cylinder is slidably inserted into an expansion cavity formed between a plurality of arc polishing plates and the connecting pipe, the end face circumference array of the maximum diameter of the conical cylinder is provided with a plurality of guide holes, each guide sliding rod is slidably inserted into one guide sliding rod, the guide sliding rods are fixedly connected to the side face of the supporting frame, one of the outer side faces of the supporting frame is fixedly provided with a servo motor, and the output shaft of the servo motor is rotatably connected with one screw rod.
Further, the bar polishing piece comprises a bar-shaped bag body, a bar-shaped polishing plate and an air duct, wherein the two bar-shaped bag bodies are respectively arranged on the outer ring surface of the arc polishing plate which is positioned at the uppermost part, the bar-shaped polishing plate is respectively fixed on the surfaces of the bar-shaped bag bodies corresponding to the key grooves, the air duct is communicated with the outer end surface of the bar-shaped bag body, and the air duct is communicated with an air pump fixed in the polishing table.
Further, the bidirectional driving mechanism comprises a connecting plate, a suspension block, pushing cylinders, guide rail strips, sliding blocks and limiting blocks, wherein the connecting plate is respectively fixed on the upper surfaces of the two symmetrical supporting frames, the suspension blocks are respectively fixed on the upper surfaces of the two connecting plates in a front-back staggered mode, the two pushing cylinders are respectively fixed on the lower surfaces of the protective cover in a front-back staggered mode, the piston rod end faces of the two pushing cylinders are respectively and fixedly connected with the left side and the right side of the two pushing cylinders, the lower surfaces of the cylinder bodies of the pushing cylinders are respectively and fixedly connected with the two front-back staggered suspension blocks, the guide rail strips are respectively fixed on the lower surfaces of the cylinder bodies of the pushing cylinders, the guide rail strips extend to the left side wall and the right side wall of the protective cover, the sliding blocks are respectively fixed on the upper surfaces of the two connecting plates, the same guide rail strips are arranged on the guide rail strips in a sliding mode, and the suspension blocks and the sliding blocks on the connecting plates are arranged in a front-back symmetrical mode, and the side faces of the guide rail strips close to the protective cover are fixedly connected to the top end faces of the protective cover through the limiting blocks.
Further, the clamping mechanism comprises a U-shaped seat, clamping plates and clamping cylinders, wherein the U-shaped seat is fixedly arranged on the upper surface of the polishing table, the clamping plates are symmetrically and slidably arranged in U-shaped grooves of the U-shaped seat, the clamping cylinders are fixed on the outer wall surfaces of the left side and the right side of each U-shaped groove, and piston rods of the clamping cylinders extend into the U-shaped grooves to be connected with the clamping plates.
Further, the end faces, which are close to each arc polishing plate, of the arc polishing plates which are symmetrical and encircle into a circular ring shape are respectively provided with a through electromagnetic block and a metal iron block in an insulating mode.
The invention has the following beneficial effects:
1. According to the invention, the arc polishing plates are circumferentially arranged on the outer ring surface of the symmetrical connecting pipe, the strip polishing members are arranged on the outer ring surface of the uppermost arc polishing plate, after the symmetrical connecting pipe is inserted into the shaft hole, the arc polishing plates which encircle the ring are expanded and attached to the hole wall of the shaft hole under the pushing of the pushing expansion assembly, and the strip polishing members are attached to the groove wall of the key groove, so that the expanded arc polishing plates slide left and right in the shaft hole along the axial direction of the groove, burrs generated after drilling on the hole wall of the shaft hole can be polished, and meanwhile, synchronous polishing processing can be carried out on the key groove, so that the polishing efficiency and polishing precision of the shaft hole of the impeller of the vacuum pump can be improved.
2. According to the invention, the conical barrels are arranged at the two ends of the connecting pipe, and the symmetrical conical barrels can be synchronously inserted into the expansion cavity formed between the arc polishing barrels which are connected to form a whole long cylinder and the connecting pipe through the matching of the two rotating screw rods and the nut seats with opposite spiral lines, so that the plurality of arc polishing plates on the outer ring surfaces of the two connecting pipes can be synchronously expanded and attached to the inner wall of the shaft hole, and the polishing precision and the polishing efficiency of the shaft hole after the plurality of arc polishing plates which encircle the ring are expanded can be improved.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present disclosure;
FIG. 2 is a schematic view of the internal structure of the protective cover disclosed by the invention;
FIG. 3 is a schematic illustration of the cooperation of the disclosed grinding mechanism and pushing expansion assembly;
FIG. 4 is a cross-sectional view of a connecting tube of the present disclosure;
FIG. 5 is a schematic diagram of a bi-directional drive mechanism according to the present disclosure;
fig. 6 is a schematic structural diagram of a clamping mechanism disclosed by the invention.
In the figure: 1. a grinding table; 2. a protective cover; 3. a polishing mechanism; 31. arc polishing plates; 32. a connecting pipe; 33. an arc-shaped seat; 34. folding the spring plate; 35. a support plate; 36. an elastic plate; 37. polishing sand paper; 38. electrifying the magnetic ring; 39. a metal iron ring; 4. pushing the expansion assembly; 41. a transmission rod; 42. rotating the screw rod; 43. a support frame; 44. a nut seat; 45. a conical cylinder; 451. a guide hole; 46. a guide slide bar; 5. a strip-shaped polishing piece; 51. a strip-shaped bag body; 52. a strip-shaped polishing plate; 53. an air duct; 6. a bi-directional drive mechanism; 61. a connecting plate; 62. a suspension block; 63. a pushing cylinder; 64. a guide rail; 65. a sliding block; 66. a limiting block; 7. clamping mechanism; 71. a U-shaped seat; 711. a U-shaped groove; 72. a clamping plate; 73. a clamping cylinder; 74. a support backing plate; 8. the electromagnetic block is communicated; 9. a metal iron block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the invention discloses a polishing device for an impeller shaft hole of a vacuum pump, which comprises a polishing table 1, wherein a protective cover 2 is arranged above the polishing table 1, a bidirectional driving mechanism 6 is arranged in the protective cover 2, a clamping mechanism 7 for clamping the impeller is arranged on the upper surface of the polishing table 1, polishing mechanisms 3 are symmetrically arranged below the bidirectional driving mechanism 6, each polishing mechanism 3 comprises an arc polishing plate 31, a connecting pipe 32 and a pushing expansion assembly 4, a plurality of arc polishing plates 31 are circumferentially arranged on the outer ring surface in an array manner, the end part of the connecting pipe 32 is provided with the pushing expansion assembly 4, a plurality of arc polishing plates 31 which are enclosed into a circular ring shape are attached to the wall of the shaft hole of the impeller under the expansion of the pushing expansion assembly 4, the outer ring surface of the arc polishing plate 31 positioned at the uppermost is fixedly provided with a strip polishing piece 5 along the length direction, and the strip polishing piece 5 is used for polishing a key groove of the shaft hole;
In the scheme of the invention, when the upper surface of the polishing table 1 is required to polish the shaft hole of the impeller, a processor vertically installs the impeller to be polished into the clamping mechanism 7 to realize clamping and fixing, the shaft hole of the impeller is higher than the clamping mechanism 7, then the bidirectional driving mechanism 6 is controlled to work, so that the connecting pipes 32 on the left side and the right side of the clamping mechanism 7 are driven to be synchronously inserted into the shaft hole of the impeller, at the moment, the two connecting pipes 32 which are inserted can be mutually adsorbed and fixed, then the pushing expansion assemblies 4 on the two ends of the connecting pipes 32 are controlled to synchronously work, a plurality of arc polishing plates 31 which are enclosed into a circular ring shape can be expanded and attached to the inner wall of the shaft hole in the shaft hole, meanwhile, the strip polishing pieces 5 on the outer ring surface of the uppermost arc polishing plate 31 can be expanded into the key grooves of the shaft hole, and then the bidirectional driving mechanism 6 is controlled to continuously work, the expanded arc polishing plates 31 slide left and right along the axial direction in the shaft hole, burrs generated after drilling holes on the hole wall of the shaft hole can be polished, and meanwhile, the key grooves can be synchronously polished, so that the shaft hole polishing efficiency and polishing precision of the vacuum pump impeller can be improved, when the impeller shaft hole clamped on the clamping mechanism 7 is polished, the pushing expansion assembly 4 moves towards the connecting pipe 32 away from the pipe mouth, so that the arc polishing plates 31 surrounding a circular ring shrink in the shaft hole, the outer wall surface of the arc polishing plates 31 is separated from contact with the hole wall of the shaft hole, the strip polishing piece 5 also shrinks in the key grooves, then the end surfaces contacted by the two connecting pipes 32 are separated from connection, the two-way driving mechanism 6 drives the connecting pipe 32 to completely withdraw from the shaft hole, the clamping mechanism 7 is separated from clamping and fixing the impeller, and then be convenient for the processing personnel to take off the impeller after polishing from polishing platform 1, then with next impeller clamping that waits to polish on clamping mechanism 7, continue the operation about repeating and just can realize carrying out quick high accuracy processing of polishing to shaft hole and the keyway of impeller.
As an implementation mode of the invention, the polishing mechanism 3 further comprises an arc-shaped seat 33, a folding elastic sheet 34, a supporting plate 35, an elastic plate 36, polishing sand paper 37, an electrified magnetic ring 38 and a metal iron ring 39, wherein two connecting pipes 32 are symmetrically arranged on the left side and the right side of the clamping mechanism 7, a plurality of arc-shaped seats 33 are fixed on the circumferential array of the outer ring surfaces of the end parts of the two connecting pipes 32, a plurality of folding elastic sheets 34 are fixed on the outer ring surfaces of each arc-shaped seat 33, the supporting plate 35 is fixed on the outer ring ends of the plurality of folding elastic sheets 34 positioned on the same arc-shaped seat 33, the circumferential array is connected with the arc-shaped polishing plates 31 on the outer ring surfaces of the plurality of supporting plates 35, a plurality of circular polishing sand paper 31 are mutually connected through the elastic plate 36, the outer ring surfaces of the elastic plate 36 are provided with polishing sand paper 37, the polishing 37 and the outer ring surfaces of the arc-shaped polishing plates 31 are positioned on the same circumferential surface, the mutually adjacent end surfaces of the two symmetrical connecting pipes 32 are respectively fixed with the electrified magnetic ring 38 and the metal iron ring 39 in an insulating manner, the two annular polishing ring assemblies are mutually far away from the inner ring assemblies are arranged on the annular impeller assemblies 4, and the annular impeller assemblies are arranged on the annular impeller assemblies are far away from the annular driving the annular impeller assemblies and are extended, and the annular impeller assemblies are driven by the annular impeller assemblies are extended, and the impeller assemblies are extended;
In the design scheme of the invention, after the connecting pipe 32 is driven by the bidirectional driving mechanism 6 to be inserted into the impeller shaft hole clamped and fixed by the clamping mechanism 7, the strip-shaped polishing piece 5 on the outer ring surface of the arc-shaped polishing plate 31 at the top is synchronously inserted into the key slot, the energizing magnetic ring 38 at the end part of one connecting pipe 32 is energized to enable the energizing magnetic ring 38 to be adsorbed and fixed on the metal iron ring 39 at the end part of the other connecting pipe 32 by magnetic adsorption force, so that the two connecting pipes 32 inserted into the shaft hole are fixedly connected, then the pushing expansion assembly 4 at the outer end parts of the symmetrical connecting pipes 32 is controlled to work, a plurality of arc-shaped polishing plates 31 which are enclosed into a circular ring shape can be expanded and attached on the hole wall of the shaft hole, When the arc polishing plates 31 are expanded, the folding spring piece 34 between the arc seat 33 and the supporting plate 35 is stretched, and the folding spring piece 34 is arranged on the outer ring surface of the end part of the two connecting pipes 32 close to each other, so that the elastic supporting effect of the expanded arc polishing plates 31 can be achieved, and the elastic plate 36 between the adjacent two arc polishing plates 31 is stretched, therefore, when the arc polishing plates 31 are expanded and attached to the hole wall of the shaft hole, the polishing sand paper 37 on the outer ring surface of the elastic plate 36 is attached to the hole wall of the shaft hole, and therefore, when the bidirectional driving mechanism 6 drives the connecting pipes 32 to slide back and forth in the shaft hole, Because the lengths of the single connecting pipe 32 and the arc polishing plates 31 are far longer than the length of the shaft hole, the bidirectional driving mechanism 6 drives the arc polishing plates 31 which are expanded and enclosed into a circular ring shape and the strip polishing pieces 5 which are inserted into the key grooves to linearly and reciprocally polish the shaft hole and the key grooves through the connecting pipe 32 which is connected with each other, and because the plurality of arc polishing plates 31 enclosed into the circular ring shape are firstly inserted into the shaft hole in a shrinking state, then are expanded and attached to the inner wall in the shaft hole under the pushing of the pushing expansion assembly 4, so that the plurality of arc polishing plates 31 can be quickly inserted into the shaft hole and then are expanded and polished, The fact that the existing grinding wheel is identical to the shaft hole in diameter is avoided, the grinding wheel is easy to insert into the shaft hole, and accurate grinding treatment is difficult to be carried out on the shaft hole; When the shaft holes and key grooves of the impellers are polished, the pushing expansion assembly 4 is controlled to slowly slide towards the outermost end of the connecting pipe 32, so that the two pushing expansion assemblies 4 are synchronously and slowly separated from pushing expansion of the circular arc polishing plates 31 enclosed on the two connecting pipes 32, the circular ring diameters enclosed by the plurality of arc polishing plates 31 are reduced under the elastic restoring force of the folding elastic sheets 34, if the shaft holes of the same batch of impellers are polished, the outer ring surfaces of the plurality of arc polishing plates 31 enclosed into the circular ring are not contacted with the shaft holes, the circular ring surfaces are not necessarily contracted to the minimum diameter, then the electrified magnetic rings 38 on the connecting pipes 32 are controlled to be powered off, Make it break away from the magnetic adsorption to metal hoop 39, and then be convenient for insert two connecting pipes 32 break away from fixed connection in the shaft hole, then work through bi-directional actuating mechanism 6, make connecting pipe 32 drive a plurality of arc of outer lane face polish the board 31 and remove towards the left and right sides of protection casing 2, and then be convenient for enclose a plurality of arc of ring form polish the board 31 and the bar is polished piece 5 and is taken out from shaft hole and keyway in, then control clamping mechanism 7 break away from the impeller centre gripping after polishing, and then be convenient for the processing personnel will polish the impeller after polishing and take off the change from polishing table 1.
As an implementation mode of the present invention, the pushing expansion assembly 4 includes a transmission rod 41, a rotating screw rod 42, a supporting frame 43, a nut seat 44, a conical cylinder 45 and a guiding slide rod 46, two symmetrical transmission rods 41 are respectively installed in the connecting pipe 32 in a rotating way through bearings, the mutually close end faces of the two transmission rods 41 are respectively and fixedly provided with an energizing magnetic ring 38 and a metal iron ring 39 in an insulating way, the mutually far end faces of the two transmission rods 41 are respectively and fixedly provided with the rotating screw rod 42, the free ends of the two rotating screw rods 42 are rotatably installed on the supporting frame 43, the spiral directions of the spiral lines of the two rotating screw rods 42 are opposite, the nut seat 44 is sleeved on the rotating screw rod 42, the conical cylinder 45 is fixedly sleeved on the outer ring face of the nut seat 44, the end part of the smallest diameter of the conical cylinder 45 is slidably inserted into an expansion cavity formed between a plurality of arc polishing plates 31 and the connecting pipe 32 which enclose a circular ring shape, the circumference array of the end face of the largest diameter of the conical cylinder 45 is provided with a plurality of guiding holes 451, each guiding slide rod 46 is slidably inserted in each guiding hole 451, the plurality of guiding slide rod 46 is fixedly connected to one of the side faces of the slide rod 46, and one of the rotating servo motor 43 is fixedly connected to the outer side faces of the supporting frame 42;
In the design scheme of the invention, when the two connecting pipes 32 are inserted into the shaft holes and are mutually attached and contacted, the end surfaces of the transmission rods 41 which are rotatably arranged in the connecting pipes 32 through bearings are mutually attached, so that when the two connecting pipes 32 are mutually attached and fixed through the electrified magnetic ring 38 and the metal iron ring 39, the end surfaces of the two transmission rods 41 are mutually attached and fixed through the independent electrified magnetic ring 38 and the metal iron ring 39, then the servo motor fixed on the left supporting frame 43 is controlled to work, the two rotating screw rods 42 which are far away from the ports of the two connecting pipes 32 are connected through the two transmission rods 41 which are fixedly attached and adsorbed, the output shafts of the servo motor work to drive the two rotating screw rods 42 with opposite spiral lines to rotate, and the two nut seats 44 drive the two conical cylinders 45 to mutually move close to each other, the guide slide rod 46 is pulled out from the guide hole 451 continuously, so that the guide slide rod 46 can play a role in limiting and rotating the sliding conical barrel 45, the conical maximum outer ring surfaces of the two conical barrels 45 which are close to each other are continuously and synchronously inserted into an expansion cavity formed between a plurality of arc polishing plates 31 of the circumferential array and the connecting pipe 32, the plurality of arc polishing plates 31 on the outer ring surface of the connecting pipe 32 are further expanded and attached to the inner wall of the shaft hole, the servo motor stops working, the two conical barrels 45 are not inserted into the expansion cavity, and then the bidirectional driving mechanism 6 is controlled to work, so that the two conical barrels are driven to horizontally and horizontally reciprocate in the shaft hole by the supporting frame 43, the rotating screw rod 42 and the connecting pipe 32 which is connected with each other, and further accurate polishing processing of the shaft hole and the key groove of the impeller can be realized; when the shaft hole of the impeller is polished, the bidirectional driving mechanism 6 is controlled to stop driving the reciprocating sliding of the connecting pipes 32, the connecting parts of the two connecting pipes 32 are positioned in the shaft hole, then the output shafts of the servo motors are controlled to reversely rotate, and then the two sections of rotating screw rods 42 drive the two conical cylinders 45 to slide towards the side surfaces of the two supporting frames 43 through the nut seats 44, so that the conical cylinders 45 can slowly slide out of the expansion cavity, the end surface with the minimum diameter of the conical cylinders 45 cannot completely slide out of the expansion cavity, a plurality of arc polishing plates 31 are separated from the inner wall of the shaft hole to be in contact with the inner wall of the shaft hole under the elastic restoring force of the folding elastic sheet 34, meanwhile, the strip polishing pieces 5 are separated from the groove wall of the key groove to be in contact with the groove, then the connecting pipes 32 and the electrified magnetic rings 38 on the transmission rods 41 are controlled to be powered off, so that the two connecting pipes 32 and the two transmission rods 41 are separated from magnetic adsorption connection, and the bidirectional driving mechanism 6 synchronously drive the two connecting pipes 32 to slide away from each other, so that the round arc polishing plates 31 can be conveniently withdrawn from the shaft hole, and then the mechanism 7 can be used for rapidly separating from the impeller from the clamping table 1.
As an embodiment of the present invention, the strip-shaped polishing member 5 includes a strip-shaped bladder 51, a strip-shaped polishing plate 52 and an air duct 53, wherein the two strip-shaped bladders 51 are respectively installed on the outer ring surface of the arc-shaped polishing plate 31 located at the uppermost part, the strip-shaped polishing plates 52 are respectively fixed on the surfaces of the strip-shaped bladders 51 corresponding to the keyways, the air duct 53 is communicated with the outer end surface of the strip-shaped bladders 51, and the air duct 53 is communicated with the air pump fixed in the polishing table 1;
In the scheme of the invention, when the connecting pipe 32 drives the arc polishing plates 31 which encircle to be inserted into the shaft hole, the uppermost strip-shaped bag body 51 drives the strip-shaped polishing plates 52 on the outer side face to be synchronously inserted into the key groove, and when the arc polishing plates 31 are expanded and attached to the inner wall of the shaft hole, the strip-shaped bag body 51 also drives the strip-shaped polishing plates 52 to approach the groove wall of the key groove, in order to increase the accuracy of sliding polishing of the strip-shaped polishing plates 52 on the groove wall of the key groove, a processor controls the air pump in the polishing table 1 to work, so that the air pump is filled into the strip-shaped bag body 51 through the air duct 53 to expand the strip-shaped bag body, the expanded strip-shaped bag body 51 drives the strip-shaped polishing plates 52 to be stably attached to the groove wall of the key groove, and further when the connecting pipe 32 continuously drives the arc polishing plates 31 to slide back and forth in the shaft hole to polish the groove wall of the key groove, the three-shaped polishing plates 52 can synchronously polish the groove wall of the key groove.
As an embodiment of the present invention, the bidirectional driving mechanism 6 includes a connection plate 61, a suspension block 62, a pushing cylinder 63, a guide rail 64, a sliding block 65 and a limiting block 66, wherein the connection plate 61 is respectively fixed on the upper surfaces of the two symmetrical supporting frames 43, the suspension block 62 is respectively fixed on the upper surfaces of the two connection plates 61 in a front-back staggered manner, the pushing cylinder 63 is respectively fixed on the lower surface of the protection cover 2, the piston rod end surfaces of the two pushing cylinders 63 face to the left side and the right side respectively, the piston rod end surfaces of the two pushing cylinders 63 are respectively fixedly connected with the two suspension blocks 62 which are respectively staggered in front-back manner, the lower surfaces of the cylinder bodies of the two pushing cylinders 63 are respectively fixed with the guide rail 64, the guide rail 64 extends to the left side wall and the right side wall of the protection cover 2, the sliding block 65 is respectively fixed on the upper surfaces of the two connection plates 61, the sliding block 65 is slidably arranged on the guide rail 64, the suspension blocks 62 and the sliding block 65 on the same connection plate 61 are respectively arranged in a front-back symmetrical manner, and the side surface of the guide rail 64 close to the protection cover 2 is fixedly connected to the top end surface of the protection cover 2 through the limiting block 66;
In the design scheme of the invention, when the connecting pipe 32 is required to be inserted into the shaft hole, the piston rods of the two pushing cylinders 63 extending left and right are controlled to synchronously shrink, so that the two vertical support frames 43 at the left and right sides are driven to approach to the side surface of the impeller by the suspension blocks 62 and the connecting plates 61, and the two connecting pipes 32 are driven to be continuously inserted into the shaft hole of the impeller, and the arc-shaped polishing plates 31 which are encircled into circular rings can be accurately expanded and attached to the hole wall of the shaft hole; when the two connecting pipes 32 are connected with each other, the arc-shaped polishing plates 31 are expanded and attached to the hole walls, and the strip-shaped polishing plates 52 are attached to the groove walls of the key grooves, at the moment, the piston rods of the left extending pushing air cylinders 63 can be controlled to extend, the piston rods of the right extending pushing air cylinders 63 need to shrink, and at the moment, the supporting frames 43 on the left side and the right side can drive the connecting pipes 32 to synchronously slide leftwards, so that the expanded arc-shaped polishing plates 31 and the expanded strip-shaped polishing plates 52 are driven to move leftwards to polish the hole walls and the key grooves of the shaft holes; when the piston rods of the left extending pushing cylinder 63 shrink and the piston rods of the right extending pushing cylinder 63 extend, at the moment, the support frames 43 on the left side and the right side drive the connecting pipes 32 to slide rightwards synchronously, so that the expanded arc polishing plate 31 and the bar polishing plate 52 are driven to slide rightwards to polish the hole wall and the key slot of the shaft hole, and further the piston rods of the two pushing cylinders 63 shrink or extend repeatedly, so that the expanded arc polishing plate 31 and the bar polishing plate 52 can continuously slide in the shaft hole and the key slot in a reciprocating manner to polish the hole wall and the slot wall rapidly and accurately; when the connecting pipe 32 is required to be separated from the shaft hole, the piston rod of the pushing cylinder 63 stretching leftwards and the piston rod of the pushing cylinder 63 stretching rightwards are synchronously controlled to stretch rightwards, and the two connecting pipes 32 disconnected at the moment are separated from the shaft hole and withdrawn under the drive of the supporting frame 43, so that a processing staff can conveniently and quickly take down the polished impeller from the clamping mechanism 7; the fixed rail 64 and the sliding block 65 on the lower surface of the cylinder body of the pushing cylinder 63 are matched, and the sliding block 65 on the rail 64 below the cylinder body of the pushing cylinder 63 extending leftwards is fixedly connected to the upper surface of the right connecting plate 61, so that the rail 64 and the sliding block 65 are matched with each other, the sliding connecting plate 61 and the supporting frame 43 can be guided and slid, the connecting plate 61 can be supported by gravity, the phenomenon that the supporting frame 43 suspended by the suspension block 62 shakes when sliding left and right when the piston rod of the pushing cylinder 63 continuously extends and contracts is prevented, the accuracy of the connecting pipe 32 driving the arc polishing plate 31 surrounding a circular ring to be inserted into a shaft hole is further influenced, and the installation of the limiting block 66 at the end part of the rail 64 can play a limiting role on the sliding block 65, so that the sliding block 65 is prevented from sliding out of the rail 64.
As an embodiment of the present invention, the clamping mechanism 7 includes a U-shaped seat 71, a clamping plate 72 and a clamping cylinder 73, wherein the U-shaped seat 71 is fixedly installed on the upper surface of the grinding table 1, the clamping plate 72 is symmetrically installed in a U-shaped groove 711 of the U-shaped seat 71 in a sliding manner, the clamping cylinder 73 is fixed on the outer wall surfaces of the left and right sides of the U-shaped groove 711, and a piston rod of the clamping cylinder 73 extends into the U-shaped groove 711 to be connected with the clamping plate 72;
In the scheme of the invention, when the impeller is required to be clamped and fixed, the impeller is vertically placed into the U-shaped groove 711 of the U-shaped seat 71 at the moment, the hole center position of the impeller shaft hole is continuously adjusted, then the piston rods of the two clamping cylinders 73 synchronously extend out to drive the two clamping plates 72 to continuously approach to the side wall surface of the impeller, so that the vertical impeller is conveniently clamped and fixed in the U-shaped groove 711, and the polishing mechanism 3 is conveniently used for polishing the clamped and fixed impeller shaft hole and the key groove; when the polishing mechanism 3 withdraws from the shaft hole of the impeller, the processing personnel control the piston rod of the clamping cylinder 73 to slowly shrink at this moment, so that the clamping plate 72 slowly breaks away from the clamping fixation of the impeller, and then the processing personnel take out the impeller from the U-shaped groove 711 under a safe state.
As an embodiment of the present invention, a supporting pad 74 is movably inserted at the bottom of the U-shaped groove 711, and the supporting pad 74 is located between the two clamping plates 72; in the design scheme of the invention, when the shaft hole of the impeller to be clamped cannot be higher than the top end face of the U-shaped groove 711, a processor can firstly put a supporting pad 74 with a certain height into the bottom of the U-shaped groove 711, then vertically put the impeller to be polished into the U-shaped groove 711, so that the shaft hole of the impeller is higher than the top end face of the U-shaped groove 711, then control the piston rod of the clamping cylinder 73 to extend out, so that the symmetrical clamping plate 72 accurately clamps and fixes the impeller in the U-shaped groove 711 of the U-shaped seat 71, and the width of the supporting pad 74 is slightly smaller than the width of the impeller, so that the symmetrical clamping plate 72 does not interfere with the clamping and fixing of the impeller.
As an implementation mode of the invention, the end face, which is symmetrical and surrounds the circular ring, of each arc polishing plate 31 close to each other is respectively provided with a through electromagnetic block 8 and a metal iron block 9 in an insulating manner;
In the scheme of the design, when two connecting pipes 32 drive respectively and enclose the arc polishing plate 31 of making a round ring and insert in the shaft hole, and the terminal surface of two sets of arc polishing plates 31 of symmetry is laminated each other and is contacted, this moment can be on control connecting pipe 32 and transfer line 41 circular ring 38 circular attraction to the metal hoop 39 of another connecting pipe 32 and transfer line 41 terminal surface on, this moment can synchronous control circular ring 31 terminal surface's circular magnetic path 8 circular telegram, make it have magnetic attraction adsorb and fix on the metal iron 9 of laminating arc polishing plate 31 terminal surface, and then make two sets of symmetry and enclose a plurality of arc polishing plates 31 of making a round ring can interconnect and form an entire long cylindric arc polishing section of thick bamboo, then control the synchronous removal of cone 45 of both ends and insert in the expansion chamber, and then interconnect and form an entire long cylindric arc polishing section of thick bamboo and outwards expand and laminate in the shaft hole simultaneously, when the connecting pipe 32 of interconnect is in the reciprocal slip in the shaft hole, interconnect and form an entire arc polishing section of thick bamboo also can be in the reciprocal hole and slide the reciprocal precision of polishing of a plurality of arc polishing plates 31 of making a round ring and then the expansion precision of polishing.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (4)
1. The utility model provides a vacuum pump impeller shaft hole grinding device, includes polishing platform (1), its characterized in that, polishing platform (1) top installs protection casing (2), and protection casing (2) internally mounted has two-way actuating mechanism (6), polishing platform (1) upper surface mounting has clamping mechanism (7) that are used for pressing from both sides tight to the impeller, two-way actuating mechanism (6) below symmetry install polishing mechanism (3), polishing mechanism (3) include arc polishing board (31), connecting pipe (32) and push away expansion subassembly (4), a plurality of arc polishing board (31) circumference array is installed to the outer lane face, and the tip of connecting pipe (32) is provided with pushes away expansion subassembly (4), enclose into a plurality of arc polishing board (31) and laminate under pushing away the expansion of expansion subassembly (4) on the axle pore wall of impeller for polish the shaft hole of impeller, be located the top arc polishing board (31) the outer lane face along its length direction is fixed with bar polishing piece (5), bar polishing piece (5) are used for polishing the keyway in the shaft hole;
The polishing mechanism (3) further comprises an arc-shaped seat (33), a folding elastic sheet (34), a supporting plate (35), an elastic plate (36), polishing sand paper (37), an electrified magnetic ring (38) and a metal iron ring (39), wherein two connecting pipes (32) are symmetrically arranged on the left side and the right side of the clamping mechanism (7), a plurality of arc-shaped seats (33) are fixed on the circumferential array of the outer ring surface of the end part of each connecting pipe (32), a plurality of folding elastic sheets (34) are fixed on the outer ring surface of each arc-shaped seat (33), the supporting plate (35) is fixed on the outer ring end parts of the plurality of folding elastic sheets (34) on the same arc-shaped seat (33), a plurality of arc-shaped polishing plates (31) are connected on the outer ring surface of each supporting plate (35) of the circumferential array, a plurality of arc-shaped polishing sand paper (37) are arranged on the outer ring surface of each connecting pipe (36), two metal iron ring (32) are symmetrically arranged on the outer ring surface of each connecting pipe (32), the pushing expansion assembly (4) is used for driving a plurality of arc polishing plates (31) which are enclosed into a circular ring shape to be attached to the inner wall of the shaft hole of the impeller;
The pushing expansion assembly (4) comprises transmission rods (41), rotating screw rods (42), supporting frames (43), nut seats (44), conical barrels (45) and guide slide rods (46), wherein the two symmetrical transmission rods (41) are respectively installed in a connecting pipe (32) in a rotating mode through bearings, energizing magnetic rings (38) and metal iron rings (39) are respectively fixed on the mutually close end faces of the two transmission rods (41) in an insulating mode, the rotating screw rods (42) are respectively fixed on the mutually far end faces of the two transmission rods (41), free ends of the two rotating screw rods (42) are rotatably installed on the supporting frames (43), the rotating directions of spiral lines of the two rotating screw rods (42) are opposite, the nut seats (44) are sleeved on the rotating screw rods (42), the conical barrels (45) are fixedly sleeved on the outer ring faces of the nut seats (44), the end portions of the smallest diameters of the conical barrels (45) are slidably inserted into expansion cavities formed between a plurality of arc-shaped polishing plates (31) and the connecting pipe (32) which enclose a circular shape, the largest diameter end faces of the conical barrels (45) are provided with guide holes (451) on the circumference of the supporting frames, guide holes (46) are formed in the guide slide arrays (46) are fixedly connected to the side faces of the supporting frames (46), a servo motor is fixed on the outer side surface of one of the supporting frames (43), and an output shaft of the servo motor is connected with one of the rotating screw rods (42);
the bidirectional driving mechanism (6) comprises a connecting plate (61), a suspension block (62), pushing cylinders (63), guide rails (64), sliding blocks (65) and limiting blocks (66), wherein the connecting plate (61) is respectively fixed on the upper surfaces of two symmetrical supporting frames (43), the suspension blocks (62) are respectively fixed on the upper surfaces of the two connecting plates (61) in a front-back staggered mode, the two pushing cylinders (63) are respectively fixed on the lower surfaces of the protecting covers (2) in a front-back mode, the end faces of piston rods of the two pushing cylinders (63) face left and right respectively, the end faces of the piston rods of the two pushing cylinders (63) are respectively fixedly connected with the two front-back staggered suspension blocks (62), the two lower surfaces of the cylinder bodies of the pushing cylinders (63) are respectively fixed with the guide rails (64), the guide rails (64) extend to the left side wall and the right side wall of the protecting covers (2), the sliding blocks (65) are respectively fixed on the upper surfaces of the two connecting plates (61), the sliding blocks (65) are slidably arranged on the guide rails (64), and the piston rod end faces of the two pushing cylinders (63) face left and right sides of the same connecting plates (61) respectively, and the piston rod end faces of the piston rods are respectively connected with the two guide rails (64) in a front-back mode, and the two side faces of the upper faces of the connecting plates are close to the upper faces of the two connecting plates (61 are respectively.
2. The polishing device for the impeller shaft hole of the vacuum pump according to claim 1, wherein the strip-shaped polishing piece (5) comprises strip-shaped bag bodies (51), strip-shaped polishing plates (52) and air guide pipes (53), the two strip-shaped bag bodies (51) are respectively installed on the outer ring surfaces of the arc-shaped polishing plates (31) which are located at the uppermost positions, the strip-shaped polishing plates (52) are respectively fixed on the surfaces, corresponding to the key grooves, of the strip-shaped bag bodies (51), the outer end surfaces of the strip-shaped bag bodies (51) are communicated with the air guide pipes (53), and the air guide pipes (53) are communicated with an air pump which is fixed in the polishing table (1).
3. The polishing device for the impeller shaft hole of the vacuum pump according to claim 1, wherein the clamping mechanism (7) comprises a U-shaped seat (71), a clamping plate (72) and a clamping cylinder (73), the U-shaped seat (71) is fixedly arranged on the upper surface of the polishing table (1), the clamping plate (72) is symmetrically and slidingly arranged in a U-shaped groove (711) of the U-shaped seat (71), the clamping cylinder (73) is fixed on the outer wall surfaces of the left side and the right side of the U-shaped groove (711), and a piston rod of the clamping cylinder (73) extends into the U-shaped groove (711) to be connected with the clamping plate (72).
4. The grinding device for the impeller shaft hole of the vacuum pump according to claim 1, wherein the end face, which is symmetrical and surrounds the circular ring, of each arc grinding plate (31) is close to the end face, and an electromagnetic through block (8) and a metal iron block (9) are respectively and insulatively arranged.
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| CN202311691786.1A CN117862980B (en) | 2023-12-11 | 2023-12-11 | Vacuum pump impeller shaft hole grinding device |
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| CN202311691786.1A CN117862980B (en) | 2023-12-11 | 2023-12-11 | Vacuum pump impeller shaft hole grinding device |
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| CN117862980B true CN117862980B (en) | 2024-06-25 |
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