CN110695698B - Welding seam drilling and grinding device used in nuclear power station CRDM surfacing repair process - Google Patents
Welding seam drilling and grinding device used in nuclear power station CRDM surfacing repair process Download PDFInfo
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- CN110695698B CN110695698B CN201910899062.3A CN201910899062A CN110695698B CN 110695698 B CN110695698 B CN 110695698B CN 201910899062 A CN201910899062 A CN 201910899062A CN 110695698 B CN110695698 B CN 110695698B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
Abstract
The invention relates to a welding line drilling and grinding device used in a nuclear power station CRDM surfacing repair process, which comprises a mounting seat, a radial sliding seat component, an axial sliding seat component, a swinging component, a drilling and grinding component and a limiting induction component, wherein the drilling and grinding component is connected to the swinging component, the swinging component is connected with one of the radial sliding seat component and the axial sliding seat component, the radial sliding seat component and the axial sliding seat component are connected, the other of the radial sliding seat component and the axial sliding seat component is connected with the mounting seat, the drilling and grinding component moves in the radial direction relative to the mounting seat through the radial sliding seat component and moves in the axial direction relative to the mounting seat through the axial sliding seat component, angular swing is carried out through the swinging component, and the limiting induction component limits the movement action of the radial sliding seat component and the axial. The invention meets the requirements of drilling and grinding the middle part and the lower part of the CRDM by improving and adjusting, simultaneously eliminates the radial and axial synthetic linear motion errors and reduces the breakage probability of drilling and grinding parts.
Description
Technical Field
The invention relates to the field of CRDM (maintenance), in particular to a welding line drilling and grinding device used in the nuclear power station CRDM surfacing repair process.
Background
When the automatic surfacing repair is carried out on omega welding seams at the middle part and the lower part of a CRDM (reactor control rod drive mechanism), two holes with the diameter larger than 2mm need to be drilled and ground in the center of an original welding seam in advance, so that when welding is carried out, boron water in a cavity at the inner side of the omega welding seam is heated and escapes, and the damage of the boron water to the welding seam quality is avoided.
In the prior art, a manual drilling and grinding mode is adopted, and an electric drill is manually controlled to drill holes in the center of a welding line and in the vertical direction. Because the welding seam surface is uneven and arc-shaped, manual force and direction control is not accurate enough, and the drill bit is easy to break or be clamped in a cavity on the inner side of the omega-shaped welding seam. In addition, the surrounding space of omega welding seams at the middle part and the lower part of the CRDM is narrow, and the operation difficulty of manual drilling and grinding is extremely high.
Generally, the existing manual weld drilling and grinding method in the CRDM repair process has the following problems:
(1) the surface of the welding line is uneven, so that the drill bit is easy to drill and grind unstably and is difficult to drill completely; simultaneously, the drill bit is easy to break;
(2) due to unstable manual force and direction control, when a welding seam is about to be drilled through by a drill bit, the drill bit is extremely easy to break and is clamped in a cavity on the inner side of the omega-shaped welding seam, so that the work is difficult to continue;
(3) the positions of omega welding seams at the middle part and the lower part of the CRDM are different, the surrounding space is narrow, and the manual drilling and grinding difficulty is extremely high.
Disclosure of Invention
The invention aims to provide a welding seam drilling and grinding device used in the nuclear power station CRDM surfacing repair process.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a be used for nuclear power station CRDM build-up welding repair in-process welding seam to bore and grind device, grind a and limit sensing assembly including mount pad, radial slide subassembly, axial slide subassembly, swing subassembly, brill, the brill grind a connection and be in the swing subassembly on, the swing subassembly with radial slide subassembly, axial slide subassembly in one be connected, radial slide subassembly, axial slide subassembly in another with the mount pad be connected, the brill grind the piece pass through radial slide subassembly relative the mount pad remove in radial direction, through axial slide subassembly relative the mount pad remove in axial direction, through the swing subassembly carry out the angle swing, limit sensing assembly restrict radial slide subassembly, The movement of the axial slide assembly.
Preferably, the limit induction component comprises an axial limit induction action block and a radial limit induction action block, when the drilling and grinding direction of the drilling and grinding part faces to the axial direction, the axial limit induction action block acts, and only the axial sliding seat component drives the drilling and grinding part to move; when the drilling and grinding direction of the drilling and grinding part faces to the radial direction, the radial limiting induction action block acts, and only the radial sliding seat assembly drives the drilling and grinding part to move. In order to avoid the situation that the drilling and grinding piece cannot keep moving in the linear direction to cause the breakage of the cutter head, the axial limiting induction action block and the radial limiting induction action block are structurally added, the radial direction and the axial direction are completely defined, and the synthetic linear motion error is eliminated.
Preferably, the radial slide assembly is connected to the mounting seat, the axial slide assembly is connected to the radial slide assembly, and the swing assembly is connected to the axial slide assembly.
Further preferably, the radial slide assembly includes a radial slide shield connected to the mounting seat, a radial adjusting screw rod disposed in the radial slide shield and extending in the radial direction, a radial connecting plate slidably connected to the radial adjusting screw rod, and a radial adjusting motor driving the radial connecting plate to slide on the radial adjusting screw rod, and the axial slide assembly is connected to the radial connecting plate.
Further preferably, the axial sliding seat assembly comprises an axial sliding seat shield connected with the radial sliding seat assembly, an axial adjusting screw rod axially extending in the axial sliding seat shield, an axial connecting plate slidably connected to the axial adjusting screw rod, and an axial adjusting motor driving the axial connecting plate to slide on the axial adjusting screw rod, and the swing assembly is connected to the axial connecting plate.
Further preferably, the swing assembly comprises a swing angle adjusting shield connected to the axial sliding seat assembly, a swing angle shaft arranged in the swing angle adjusting shield and capable of rotating around the swing angle shaft, and a swing angle motor driving the swing angle shaft to rotate, and the drilling and grinding piece is connected with the swing angle shaft.
Further preferably, the rotation of the pivot shaft drives the drilling and grinding piece to switch between the drilling and grinding direction and the axial direction or the radial direction.
Further preferably, the rotation of the pivot angle shaft enables the limit induction component to act.
Preferably, the drilling and grinding piece is a pneumatic milling cutter. The pneumatic milling cutter is adopted to replace an electric drill, the rotating speed of the pneumatic milling cutter can reach more than 1500 revolutions per minute, the stress change of a part to be drilled and ground is small by controlling the feed amount, and the part to be drilled and ground is directly changed into powder, so that the influence on the environment of the part area is small; simultaneously, greatly reduced the welding seam when being about to be bored through by the drill bit, the risk that the metal piece enters into omega welding seam inboard cavity.
Further preferably, the pneumatic milling cutter comprises a milling cutter protective cover, a cutter head arranged in the milling cutter protective cover and an air source for driving the cutter head to move.
Preferably, the mounting seat is a flange.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
by improving and adjusting, the drilling and grinding device can meet the requirements of drilling and grinding the middle part and the lower part of the CRDM, simultaneously eliminate radial and axial synthetic linear motion errors and reduce the breakage probability of a drilling and grinding part.
Drawings
FIG. 1 is a first schematic diagram of the present embodiment;
FIG. 2 is a second schematic diagram of the present embodiment;
FIG. 3 is a third schematic view of the present embodiment;
FIG. 4 is a partial schematic view of the present embodiment;
FIG. 5 is a first schematic view of the present embodiment illustrating the drilling and grinding of a component in a CRDM;
FIG. 6 is a schematic diagram of a second exemplary embodiment of a method for drilling and grinding a component in a CRDM;
FIG. 7 is a first schematic view of the present embodiment illustrating the drilling and grinding of a lower CRDM part;
FIG. 8 is a second schematic view of the present embodiment illustrating the drilling and grinding of the lower CRDM part;
wherein: 1. a flange plate; 20. a radial slide shroud; 21. radially adjusting the lead screw; 22. a radial connecting plate; 30. an axial slide shroud; 31. axially adjusting the lead screw; 32. an axial connecting plate; 40. a swing angle adjusting shield; 41. a swing angle shaft; 42. a swing angle motor; 50. an axial limiting induction action block; 51. a radial limit induction action block; 60. a milling cutter guard; 61. a cutter head; 62. a gas source; 7. a CRDM middle component; 8. a CRDM lower component.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The welding seam drilling and grinding device used in the nuclear power station CRDM surfacing repair process comprises a mounting seat, a radial sliding seat assembly, an axial sliding seat assembly, a swinging assembly, a drilling and grinding piece and a limiting induction assembly. Wherein:
the mount pad is ring flange 1, and radial, axial in this application all are based on ring flange 1.
Radial slide subassembly is connected on ring flange 1, and axial slide subassembly is connected on radial slide subassembly, and the swing subassembly is connected on axial slide subassembly, bores and grinds the piece and connect on the swing subassembly. The drilling and grinding piece moves in the radial direction through the radial sliding seat assembly relative to the flange plate 1, moves in the axial direction through the axial sliding seat assembly relative to the flange plate 1, swings at an angle through the swinging assembly, and the limiting induction assembly limits the movement of the radial sliding seat assembly and the axial sliding seat assembly. Specifically, the method comprises the following steps:
the radial slide assembly comprises a radial slide shield 20 connected with the flange 1, a radial adjusting screw 21 arranged in the radial slide shield 20 and extending along the radial direction, a radial connecting plate 22 connected with the radial adjusting screw 21 in a sliding way, and a radial adjusting motor (not shown in the figure) driving the radial connecting plate 22 to slide on the radial adjusting screw 21, and the axial slide assembly is connected with the radial connecting plate 22.
The axial slide assembly includes an axial slide guard 30 connected to the radial connecting plate 22, an axial adjusting screw 31 disposed in the axial slide guard 30 and extending in the axial direction, an axial connecting plate 32 slidably connected to the axial adjusting screw 31, and an axial adjusting motor (not shown) driving the axial connecting plate 32 to slide on the axial adjusting screw 31, and the wobble assembly is connected to the axial connecting plate 32.
The swinging assembly comprises a swinging angle adjusting shield 40 connected to the axial connecting plate 32, a swinging angle shaft 41 arranged in the swinging angle adjusting shield 40 and capable of rotating around the swinging angle shaft, and a swinging angle motor 42 driving the swinging angle shaft 41 to rotate, the drilling and grinding piece is connected with the swinging angle shaft 41, and the swinging angle shaft 41 rotates to drive the drilling and grinding piece to switch between the drilling and grinding direction and the axial direction or the radial direction.
The limit sensing assembly comprises an axial limit sensing action block 50 and a radial limit sensing action block 51, as shown in fig. 4: the axial limit induction action block 50 and the radial limit induction action block 51 are also arranged on the swing angle adjusting shield 40, and the axial limit induction action block 50 and the radial limit induction action block 51 are enabled to rotate through the swing angle shaft 4. When the drilling and grinding direction of the drilling and grinding part faces to the axial direction, the axial limiting induction action block 50 acts to ensure that the drilling and grinding part only acts through the axial adjusting motor; when the drilling and grinding direction of the drilling and grinding part faces to the radial direction, the radial limiting induction action block 51 acts, the drilling and grinding part is guaranteed to move only through the action of the radial adjusting motor, and the synthetic linear motion error is eliminated.
The drilling and grinding part adopts a pneumatic milling cutter. The pneumatic milling cutter comprises a milling cutter protecting cover 60, a cutter head 61 arranged in the milling cutter protecting cover 60 and an air source 62 for driving the cutter head to move.
As shown in fig. 5 and 6: drilling and grinding a CRDM middle part:
(1) clicking a 'zero position' button on the control panel, automatically adjusting the pneumatic milling cutter to a preset safe position,
(2) hoisting the drilling and grinding device to the position of the middle part 7 of the CRDM by using the hoisting and traction device and observing through the panoramic camera,
(3) the angle of the swing angle shaft 41 is adjusted, the axial limit induction block 50 is triggered to act, the pneumatic milling cutter is completely defined at the axial position,
(4) adjusting the radial and axial sliding seat components, moving the cutter head of the pneumatic milling cutter to the position above the center of the welding line of the middle part 7 of the CRDM through the observation of the panoramic camera,
(5) clicking a START button on a control panel, starting the action of the pneumatic milling cutter, automatically starting the drilling and grinding action according to preset drilling and grinding parameters,
(6) and after the drilling and grinding are finished, the pneumatic milling cutter is automatically closed, the pneumatic milling cutter is automatically lifted to the initial position, and the workload of the drilling and grinding hole position of one CRDM middle part 7 is finished.
As shown in fig. 7 and 8: drilling and grinding the CRDM lower part:
(1) clicking a 'zero position' button on the control panel, automatically adjusting the pneumatic milling cutter to a preset safe position,
(2) hoisting the drilling and grinding device to the position of the CRDM lower part component 8 by using the hoisting and traction device and observing through the panoramic camera,
(3) the angle of the swing angle shaft 41 is adjusted to trigger the radial limit induction block 51 to act, the pneumatic milling cutter is completely defined at the radial position,
(4) adjusting the radial and axial sliding seat components, moving the cutter head of the pneumatic milling cutter to the position of the welding line of the CRDM lower part component 8 through the observation of the panoramic camera,
(5) clicking a START button on a control panel, starting the action of the pneumatic milling cutter, automatically starting the drilling and grinding action according to preset drilling and grinding parameters,
(6) and after the drilling and grinding are finished, automatically closing the pneumatic milling cutter, automatically lifting the pneumatic milling cutter to the initial position, and finishing the workload of the drilling and grinding hole position of one CRDM lower part component 8.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides a be arranged in nuclear power station CRDM build-up welding repair process welding seam brill to grind device which characterized in that: including mount pad, radial slide subassembly, axial slide subassembly, swing subassembly, brill and grind a and spacing response subassembly, the brill grind a connection and be in the swing subassembly on, the swing subassembly with radial slide subassembly, axial slide subassembly in one be connected, radial slide subassembly, axial slide subassembly in another with the mount pad be connected, the brill grind the piece through radial slide subassembly relative the mount pad remove in radial direction, through axial slide subassembly relative the mount pad remove in axial direction, through the swing subassembly carry out the angle swing, spacing response subassembly restriction radial slide subassembly, axial slide subassembly's removal action, spacing response subassembly include the spacing response action piece of axial, When the drilling and grinding direction of the drilling and grinding part faces to the axial direction, the axial limiting induction action block acts, and only the axial sliding seat assembly drives the drilling and grinding part to move; when the drilling and grinding direction of the drilling and grinding part faces to the radial direction, the radial limiting induction action block acts, and only the radial sliding seat assembly drives the drilling and grinding part to move.
2. The welding line drilling and grinding device used in the nuclear power station CRDM surfacing repair process according to claim 1, characterized in that: the radial sliding seat assembly is connected to the mounting seat, the axial sliding seat assembly is connected to the radial sliding seat assembly, and the swing assembly is connected to the axial sliding seat assembly.
3. The welding line drilling and grinding device used in the nuclear power station CRDM surfacing repair process according to claim 2 is characterized in that: the radial sliding seat assembly comprises a radial sliding seat protective cover connected with the mounting seat, a radial adjusting screw rod arranged in the radial sliding seat protective cover and extending along the radial direction, a radial connecting plate connected to the radial adjusting screw rod in a sliding mode, and a radial adjusting motor driving the radial connecting plate to slide on the radial adjusting screw rod, and the axial sliding seat assembly is connected to the radial connecting plate.
4. The welding line drilling and grinding device used in the nuclear power station CRDM surfacing repair process according to claim 2 is characterized in that: the axial sliding seat assembly comprises an axial sliding seat protective cover connected with the radial sliding seat assembly, an axial adjusting screw rod arranged in the axial sliding seat protective cover and extending along the axial direction, an axial connecting plate connected on the axial adjusting screw rod in a sliding manner, and an axial adjusting motor driving the axial connecting plate to slide on the axial adjusting screw rod, wherein the swinging assembly is connected on the axial connecting plate.
5. The welding line drilling and grinding device used in the nuclear power station CRDM surfacing repair process according to claim 2 is characterized in that: the swing assembly comprises a swing angle adjusting shield connected to the axial sliding seat assembly, a swing angle shaft arranged in the swing angle adjusting shield and capable of rotating around the swing angle shaft, and a swing angle motor driving the swing angle shaft to rotate, and the drilling and grinding piece is connected with the swing angle shaft.
6. The welding line drilling and grinding device used in the CRDM overlaying welding repair process of the nuclear power station according to claim 5, which is characterized in that: the rotation of the swing angle shaft drives the drilling and grinding piece to switch between the drilling and grinding direction and the axial direction or the radial direction.
7. The welding line drilling and grinding device used in the CRDM overlaying welding repair process of the nuclear power station according to claim 5, which is characterized in that: the rotation of the swing angle shaft enables the limit induction component to act.
8. The welding line drilling and grinding device used in the nuclear power station CRDM surfacing repair process according to claim 1, characterized in that: the drilling and grinding piece is a pneumatic milling cutter.
9. The welding line drilling and grinding device used in the nuclear power station CRDM surfacing repair process according to claim 1, characterized in that: the mounting seat is a flange plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899062.3A CN110695698B (en) | 2019-09-23 | 2019-09-23 | Welding seam drilling and grinding device used in nuclear power station CRDM surfacing repair process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910899062.3A CN110695698B (en) | 2019-09-23 | 2019-09-23 | Welding seam drilling and grinding device used in nuclear power station CRDM surfacing repair process |
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| CN110695698A CN110695698A (en) | 2020-01-17 |
| CN110695698B true CN110695698B (en) | 2021-03-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3763677B2 (en) * | 1998-07-17 | 2006-04-05 | 健治 倉持 | Progressive press die insertion / removal type tapping device and progressive press die insertion / removal type tapping method |
| CN205520765U (en) * | 2016-02-01 | 2016-08-31 | 江苏贝斯特数控机械有限公司 | Steel band scraper grinding machine |
| CN105598702B (en) * | 2016-02-01 | 2018-05-25 | 湖州以创精工机械有限公司 | A kind of multistation cone roller prosthetic device |
| CN205437780U (en) * | 2016-03-09 | 2016-08-10 | 李伟 | Multi -functional numerical control machine tool |
| CN108381185B (en) * | 2018-01-26 | 2019-07-16 | 福州三迅机械有限公司 | Roller carrier shaft cut jump-ring slot, face work, chamfering and centering one lathe |
| CN108526901A (en) * | 2018-04-27 | 2018-09-14 | 王慧超 | A kind of industrial production brill mill integrated device |
| CN108971701B (en) * | 2018-09-12 | 2021-04-16 | 岭东核电有限公司 | Special positioning device for repairing surfacing welding of omega-shaped welding seams in middle of CRDM (Crdm) |
| CN109894694A (en) * | 2019-04-12 | 2019-06-18 | 广东顺的精密数控设备有限公司 | A kind of four-shaft numerically controlled electric spark knife sharpener |
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