CN112916926A - Hole milling device for maintaining bushing of electric heating element of voltage stabilizer - Google Patents
Hole milling device for maintaining bushing of electric heating element of voltage stabilizer Download PDFInfo
- Publication number
- CN112916926A CN112916926A CN202110119858.XA CN202110119858A CN112916926A CN 112916926 A CN112916926 A CN 112916926A CN 202110119858 A CN202110119858 A CN 202110119858A CN 112916926 A CN112916926 A CN 112916926A
- Authority
- CN
- China
- Prior art keywords
- positioning rod
- milling cutter
- milling
- heating element
- sleeve
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/18—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2220/00—Details of milling processes
- B23C2220/48—Methods of milling not otherwise provided for
Abstract
The invention discloses a hole milling device for maintaining a bushing of an electric heating element of a voltage stabilizer, which comprises a device frame, a milling cutter arranged on the device frame and a positioning assembly, wherein the milling cutter is arranged on the device frame; the milling cutter is a hollow structure provided with a central hole, and the axis of the central hole is coaxial with the axis of the milling cutter; the positioning assembly comprises a positioning rod which is a straight rod, and an expansion end capable of realizing the strength expansion joint of the positioning rod and the sleeve is arranged at the front end of the positioning rod; the device frame is connected to the positioning rod in a sliding mode, the positioning rod penetrates through the center hole, and the expansion end is located at the front end of the milling cutter. The device has a simple structure, and can effectively remove the local part of the sleeve on the voltage stabilizer and perform high-precision reaming processing on the hole channel for installing the sleeve on the voltage stabilizer by the outside of the voltage stabilizer.
Description
Technical Field
The invention relates to the technical field of maintenance devices of voltage stabilizers of nuclear power stations, in particular to a hole milling device for maintaining electric heating element sleeves of the voltage stabilizers.
Background
The voltage stabilizer is one of main devices of a loop system of the nuclear power reactor, and the operating pressure of the loop is maintained by adjusting the steam-water content ratio in the voltage stabilizer by changing the temperature of an electric heating element in the voltage stabilizer.
In the mounting structure of the electric heating element sleeve and the lower end socket at the bottom of the voltage stabilizer, the risk and probability of corrosion leakage of PWSCC are highest in a loop due to the fact that a sealing welding seam at a connecting part works at a high temperature of more than 300 ℃ and under an operating environment with welding residual stress and working stress.
When the connection weld is corroded and leaked, the maintenance of the sleeve needs to be carried out, the sleeve needs to be removed, and a new sleeve needs to be installed. Because the sleeve and the voltage stabilizer are installed in a cold mode, the sleeve of the electric heating element cannot be dismounted by adopting a general method.
The provided voltage stabilizer electric heating element sleeve removing and reaming tool is used for removing and reaming a voltage stabilizer electric heating element sleeve to be maintained and replaced, and has important significance for providing a processing tool for maintaining a penetrating piece of the voltage stabilizer electric heating element sleeve of a nuclear power station.
Disclosure of Invention
The invention provides a hole milling device for maintaining a voltage stabilizer electric heating element sleeve, aiming at the technical problems that the removal processing and the reaming processing of the voltage stabilizer electric heating element sleeve to be maintained and replaced are provided, and the processing tool is significant for maintaining a penetrating piece of the voltage stabilizer electric heating element sleeve of a nuclear power station. The device has a simple structure, and can effectively remove the local part of the sleeve on the voltage stabilizer and perform high-precision reaming processing on the hole channel for installing the sleeve on the voltage stabilizer by the outside of the voltage stabilizer.
Aiming at the problems, the hole milling device for maintaining the bushing of the electric heating element of the voltage stabilizer provided by the invention solves the problems through the following technical key points: the hole milling device for maintaining the sleeve of the electric heating element of the voltage stabilizer comprises a device frame, a milling cutter arranged on the device frame and a positioning assembly;
the milling cutter is a hollow structure provided with a central hole, and the axis of the central hole is coaxial with the axis of the milling cutter;
the positioning assembly comprises a positioning rod which is a straight rod, and an expansion end capable of realizing the strength expansion joint of the positioning rod and the sleeve is arranged at the front end of the positioning rod;
the device frame is connected to the positioning rod in a sliding mode, the positioning rod penetrates through the center hole, and the expansion end is located at the front end of the milling cutter.
The scheme aims to realize the replacement of the casing in the following mode: and cutting off the lower end part of the sleeve aiming at the complete penetrating type sleeve, wherein the specific cutting-off position is positioned between the inner side and the outer side of the voltage stabilizer shell, a new sleeve installation station is formed after the cutting-off of the corresponding sleeve is completed, the new sleeve is embedded into the installation station from the bottom side of the sleeve hole through cold fitting, and the welding of the upper end of the new sleeve and the voltage stabilizer shell is completed through a hole channel on the new sleeve.
The bottom of the voltage stabilizer is generally an ellipsoid, even a large number of sleeves exist below the voltage stabilizer, due to the fact that the distance between the sleeves is small, fixing of the corresponding maintenance device on the voltage stabilizer is not convenient to complete, old sleeves are removed in consideration, and the problems of machining precision and surface quality of sleeve holes needing to be considered are solved for achieving good cold assembly, and a novel hole milling device is provided.
In the concrete structure of the hole milling device, the positioning assembly is used for providing a foundation connected with the voltage stabilizer for the hole milling device, and the positioning assembly is arranged to comprise an expansion end, if the old casing pipe is intercepted relative to the exposed part of the voltage stabilizer, aiming at the pipe section left in the inner side and the outer side of the voltage stabilizer, the expansion end in the contraction or retraction state is embedded into the casing pipe from the pipe orifice at the lower end of the casing pipe through the bottom of the voltage stabilizer, and the expansion end is positioned above the dead point position at the upper end of drilling and milling, at the moment, the casing pipe with the welding connection relation between the inside of the voltage stabilizer and the voltage stabilizer is utilized, and the fixing of the positioning rod on the voltage stabilizer can be. And then, the milling cutter is in a hollow structure, the device frame is slidably connected to the positioning rod, the positioning rod is used as a device frame sliding track restraining and positioning rod piece, and the milling of the residual sleeve and the reaming of the sleeve hole can be completed in the sliding process of the device frame to the expansion end.
The scheme has a simple structure, and the hole milling device is fixed without depending on the bottom structures of other sleeves or voltage stabilizers for the maintenance of a specific sleeve, so that the scheme is convenient to install; meanwhile, as the milled sleeve and the reamed hole section are in coaxial relation with the residual part of the upper sleeve, after the expansion end is used for fixing the device, for example, based on the expansion and expansion principle of a tube expander in the prior art, the expansion end can be effectively used for ensuring the coaxiality of the positioning rod and the sleeve section to be milled and reamed and then the machining precision of the device is effectively ensured based on the constraint of the positioning rod on the feed motion of the milling cutter, so that the high-quality cold assembly of a new sleeve at the later stage is facilitated; this scheme adopts milling cutter as the processing cutter simultaneously, does to utilize the high characteristics of milling cutter machining precision, does benefit to like reaming aperture processingquality, surface roughness quality etc..
Because the locating lever needs to pass milling cutter, the preferred clearance fit that adopts of centre bore on locating lever and the milling cutter, and consider the axiality problem of locating lever and milling cutter, preferably set up to lead to sliding sleeve and antifriction bearing between device frame and the locating lever and be connected: the sliding sleeve is arranged on the positioning rod and can slide along the axis direction of the positioning rod, the inner ring of the rolling bearing is in interference connection with the sliding sleeve, the rolling bearing is coaxial with the sliding sleeve, and the outer ring of the rolling bearing is fixedly connected with the device frame.
The further technical scheme is as follows:
in order to realize that milling cutter along the axis of locating lever feeds, set up as: the device also comprises a feeding mechanism which is arranged between the positioning rod and the device frame and is used for realizing the position adjustment of the device frame on the axis of the positioning rod.
As a technical scheme convenient for realizing continuous feeding, the device is provided with: the positioning rod is a threaded rod, the feeding mechanism is in threaded connection with the positioning rod, and the feeding mechanism is connected with the device frame;
the position adjustment is realized by adjusting the threaded engagement position of the feeding mechanism on the axis of the positioning rod.
Aiming at the above implementation manner which is convenient for realizing continuous feeding and is preferably convenient for operation, the implementation manner is set as follows: the feeding mechanism comprises a hand wheel which is coaxial with the positioning rod and used for adjusting the thread engagement position.
As mentioned above, because the locating lever needs to pass through the milling cutter, and the feeding amount that satisfies the processing demand needs to be considered, in order to avoid the cooperation relationship of locating lever and milling cutter to produce the influence to relevant power supply, set up as: the milling cutter driving mechanism is characterized by further comprising a driving part used for driving the milling cutter to rotate, the driving part is in transmission connection with the milling cutter through a transmission mechanism, and the driving part is located on the side of the milling cutter. In the scheme, the transmission mechanism is used for realizing rotation reversing transmission.
As a specific driving part implementation mode which has small volume, high output power, small influence of environmental factors on temperature work and convenient realization of stepless speed regulation and load starting, the device is set as follows: the milling cutter is characterized by further comprising a driving part for driving the milling cutter to rotate, wherein the driving part is a pneumatic motor.
In order to control the working state of the pneumatic motor, the following steps are provided: the pneumatic motor air supply control system further comprises a compressed air control module for controlling the air supply state and parameters of the pneumatic motor.
For the realization end that expands can be for the axis of locating lever, evenly expand and retract in each radial direction to make the end that expands lie in sleeve pipe interact in-process, keep locating lever and sleeve pipe coaxial all the time, set up to: and a plurality of expansion units which are annularly and uniformly distributed relative to the axis of the positioning rod are arranged on the expansion joint end.
As a technical scheme which can simplify the overall structure design of the device and is convenient for completing the connection of the positioning component and the sleeve, the device is provided with: the positioning rod is a threaded rod which is in threaded connection with the device frame; and in the process that the threaded rod rotates around the axis of the threaded rod, the expansion end expands or contracts according to different rotating directions.
In order to facilitate the replacement of milling cutters, such as milling cutters having different outer diameters or different cutter body forms, according to specific machining needs, the arrangement is as follows: the milling cutter is connected with the device frame through the cutter frame.
The invention has the following beneficial effects:
the bottom of the voltage stabilizer is generally an ellipsoid, even a large number of sleeves exist below the voltage stabilizer, due to the fact that the distance between the sleeves is small, fixing of the corresponding maintenance device on the voltage stabilizer is not convenient to complete, old sleeves are removed in consideration, and the problems of machining precision and surface quality of sleeve holes needing to be considered are solved for achieving good cold assembly, and a novel hole milling device is provided.
In the concrete structure of the hole milling device, the positioning assembly is used for providing a foundation connected with the voltage stabilizer for the hole milling device, and the positioning assembly is arranged to comprise an expansion end, if the old casing pipe is intercepted relative to the exposed part of the voltage stabilizer, aiming at the pipe section left in the inner side and the outer side of the voltage stabilizer, the expansion end in the contraction or retraction state is embedded into the casing pipe from the pipe orifice at the lower end of the casing pipe through the bottom of the voltage stabilizer, and the expansion end is positioned above the dead point position at the upper end of drilling and milling, at the moment, the casing pipe with the welding connection relation between the inside of the voltage stabilizer and the voltage stabilizer is utilized, and the fixing of the positioning rod on the voltage stabilizer can be. And then, the milling cutter is in a hollow structure, the device frame is slidably connected to the positioning rod, the positioning rod is used as a device frame sliding track restraining and positioning rod piece, and the milling of the residual sleeve and the reaming of the sleeve hole can be completed in the sliding process of the device frame to the expansion end.
The scheme has a simple structure, and the hole milling device is fixed without depending on the bottom structures of other sleeves or voltage stabilizers for the maintenance of a specific sleeve, so that the scheme is convenient to install; meanwhile, as the milled sleeve and the reamed hole section are in coaxial relation with the residual part of the upper sleeve, after the expansion end is used for fixing the device, for example, based on the expansion and expansion principle of a tube expander in the prior art, the expansion end can be effectively used for ensuring the coaxiality of the positioning rod and the sleeve section to be milled and reamed and then the machining precision of the device is effectively ensured based on the constraint of the positioning rod on the feed motion of the milling cutter, so that the high-quality cold assembly of a new sleeve at the later stage is facilitated; this scheme adopts milling cutter as the processing cutter simultaneously, does to utilize the high characteristics of milling cutter machining precision, does benefit to like reaming aperture processingquality, surface roughness quality etc..
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a hole milling device for repairing a casing of an electric heating element of a voltage stabilizer, the schematic structural diagram being: partial section view with partial section view directly matching with the positioning rod.
The labels in the figure are respectively: 1. the device comprises a device frame 2, a driving part 3, a tool rest 4, an expansion joint end 5, a positioning assembly 6, a milling cutter 7, a feeding mechanism 8 and a positioning rod.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples:
example 1:
as shown in fig. 1, the hole milling device for maintaining the bushing of the electric heating element of the voltage stabilizer comprises a device frame 1, a milling cutter 6 arranged on the device frame 1, and a positioning assembly 5;
the milling cutter 6 is a hollow structure provided with a central hole, and the axis of the central hole is coaxial with the axis of the milling cutter 6;
the positioning assembly 5 comprises a positioning rod 8 which is a straight rod, and the front end of the positioning rod 8 is provided with an expansion joint end 4 capable of realizing the strength expansion joint of the positioning rod 8 and the sleeve;
the device frame 1 is slidably connected to a positioning rod 8, the positioning rod 8 penetrates through the central hole, and the expansion end 4 is located at the front end of the milling cutter 6.
The scheme aims to realize the replacement of the casing in the following mode: and cutting off the lower end part of the sleeve aiming at the complete penetrating type sleeve, wherein the specific cutting-off position is positioned between the inner side and the outer side of the voltage stabilizer shell, a new sleeve installation station is formed after the cutting-off of the corresponding sleeve is completed, the new sleeve is embedded into the installation station from the bottom side of the sleeve hole through cold fitting, and the welding of the upper end of the new sleeve and the voltage stabilizer shell is completed through a hole channel on the new sleeve.
The bottom of the voltage stabilizer is generally an ellipsoid, even a large number of sleeves exist below the voltage stabilizer, due to the fact that the distance between the sleeves is small, fixing of the corresponding maintenance device on the voltage stabilizer is not convenient to complete, old sleeves are removed in consideration, and the problems of machining precision and surface quality of sleeve holes needing to be considered are solved for achieving good cold assembly, and a novel hole milling device is provided.
In the concrete structure of the hole milling device, the positioning assembly 5 is used for providing a foundation for the hole milling device to be connected with the voltage stabilizer, and the expansion end 4 is arranged to be included, for the pipe section left in the shell and outside of the voltage stabilizer after the exposed part of the old casing pipe relative to the voltage stabilizer is intercepted, the expansion end 4 in the contraction or retraction state is embedded into the casing pipe from the pipe orifice at the lower end of the casing pipe through the bottom of the voltage stabilizer, and the expansion end 4 is positioned above the upper end stop position of drilling and milling processing, at the moment, the casing pipe with the welding connection relation between the inside of the voltage stabilizer and the voltage stabilizer is utilized, and after the expansion end 4 expands, the fixing of the positioning rod 8 on the voltage stabilizer can be. And then, by utilizing the structural characteristics that the arranged milling cutter 6 is of a hollow structure, the device frame 1 is slidably connected onto the positioning rod 8, the positioning rod 8 is used as a sliding track constraint of the device frame 1 and a positioning rod 8, and the milling of the residual sleeve and the reaming of the sleeve hole can be finished in the sliding process of the device frame 1 to the expansion end 4.
The scheme has a simple structure, and the hole milling device is fixed without depending on the bottom structures of other sleeves or voltage stabilizers for the maintenance of a specific sleeve, so that the scheme is convenient to install; meanwhile, as the milled sleeve and the reamed hole section are in coaxial relation with the residual part of the upper sleeve, after the expansion end 4 is used for fixing the device, the expansion end 4 can be effectively used for ensuring the coaxiality of the positioning rod 8 and the sleeve section to be milled and reamed and the hole section of the sleeve to be reamed, for example, based on the expansion and expansion principle of a tube expander in the prior art, and then the processing precision of the device is effectively ensured based on the constraint of the positioning rod 8 on the feed motion of the milling cutter 6, so that the high-quality cold assembly of a new sleeve at the later stage is facilitated; simultaneously, the scheme adopts the milling cutter 6 as a processing cutter, and the characteristic of high processing precision of the milling cutter 6 can be utilized, so that the processing quality of the hole expanding aperture, the surface roughness quality and the like are facilitated.
Because locating lever 8 needs to pass milling cutter 6, so locating lever 8 preferably adopts clearance fit with the centre bore on milling cutter 6, and considers locating lever 8 and milling cutter 6's axiality problem, preferably sets up to lead to sliding sleeve and antifriction bearing to be connected between device frame 1 and locating lever 8: the sliding sleeve is arranged on the positioning rod 8 and can slide along the axis direction of the positioning rod 8, the inner ring of the rolling bearing is in interference connection with the sliding sleeve, the rolling bearing is coaxial with the sliding sleeve, and the outer ring of the rolling bearing is fixedly connected with the device frame 1.
Example 2:
the present embodiment is further limited on the basis of embodiment 1, and in order to facilitate the feeding of the milling cutter 6 along the axis of the positioning rod 8, the following are provided: the device also comprises a feeding mechanism 7 which is arranged between the positioning rod 8 and the device frame 1 and is used for realizing the position adjustment of the device frame 1 on the axis of the positioning rod 8.
As a technical scheme convenient for realizing continuous feeding, the device is provided with: the positioning rod 8 is a threaded rod, the feeding mechanism 7 is in threaded connection with the positioning rod 8, and the feeding mechanism 7 is connected with the device frame 1;
the position adjustment is realized by adjusting the threaded engagement position of the feed mechanism 7 on the axis of the positioning rod 8.
Aiming at the above implementation manner which is convenient for realizing continuous feeding and is preferably convenient for operation, the implementation manner is set as follows: the feeding mechanism 7 comprises a hand wheel which is coaxial with the positioning rod 8 and is used for adjusting the threaded engagement position.
As described above, since the positioning rod 8 needs to pass through the milling cutter 6, and the feeding amount meeting the machining requirement needs to be considered, in order to avoid the influence of the matching relationship between the positioning rod 8 and the milling cutter 6 on the related power source, the arrangement is as follows: the milling cutter driving device further comprises a driving part 2 used for driving the milling cutter 6 to rotate, the driving part 2 is in transmission connection with the milling cutter 6 through a transmission mechanism, and the driving part 2 is located on the side of the milling cutter 6. In the scheme, the transmission mechanism is used for realizing rotation reversing transmission.
As a specific drive part 2 implementation mode that small, exportable power is high, and temperature work is influenced by environmental factor for a short time, be convenient for realize stepless speed regulation and load start, set up to: the milling cutter driving device further comprises a driving part 2 used for driving the milling cutter 6 to rotate, and the driving part 2 is a pneumatic motor.
In order to control the working state of the pneumatic motor, the following steps are provided: the pneumatic motor air supply control system further comprises a compressed air control module for controlling the air supply state and parameters of the pneumatic motor.
For the realization end 4 that expands can be for the axis of locating lever 8, evenly expand and retract in each radial direction to it lies in the sleeve pipe interact in-process to expand end 4, keeps locating lever 8 and sleeve pipe coaxial all the time, sets up to: and a plurality of expansion units which are annularly and uniformly distributed relative to the axis of the positioning rod 8 are arranged on the expansion end 4.
As a technical scheme which can simplify the overall structure design of the device and is convenient for completing the connection of the positioning component 5 and the sleeve, the device is provided with: the positioning rod 8 is a threaded rod which is in threaded connection with the device frame 1; and in the process that the threaded rod rotates around the axis of the threaded rod, the expansion end 4 expands or contracts according to different rotating directions.
Example 3:
the present embodiment is further defined on the basis of any one of the technical solutions provided in any one of the above embodiments, and in order to facilitate replacement of the milling cutter 6 having, for example, a different outer diameter or a different cutter body form according to specific machining requirements, the present embodiment is configured as follows: the milling cutter 6 is connected with the device frame 1 through the cutter frame 3.
The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended that the specific embodiments of the present invention be limited to these descriptions. For those skilled in the art to which the invention pertains, other embodiments that do not depart from the gist of the invention are intended to be within the scope of the invention.
Claims (10)
1. The hole milling device for maintaining the sleeve of the electric heating element of the voltage stabilizer comprises a device frame (1) and a milling cutter (6) arranged on the device frame (1), and is characterized by further comprising a positioning assembly (5);
the milling cutter (6) is of a hollow structure provided with a central hole, and the axis of the central hole is coaxial with the axis of the milling cutter (6);
the positioning assembly (5) comprises a positioning rod (8) which is a straight rod, and an expansion end (4) capable of realizing the strength expansion joint of the positioning rod (8) and the sleeve is arranged at the front end of the positioning rod (8);
the device frame (1) is connected to the positioning rod (8) in a sliding mode, the positioning rod (8) penetrates through the center hole, and the expansion end (4) is located at the front end of the milling cutter (6).
2. The hole milling device for repairing the bushing of the electric heating element of the voltage stabilizer as claimed in claim 1, further comprising a feeding mechanism (7) disposed between the positioning rod (8) and the assembly frame (1) for adjusting the position of the assembly frame (1) on the axis of the positioning rod (8).
3. The hole milling device for repairing the bushing of the electric heating element of the voltage stabilizer as claimed in claim 2, wherein the positioning rod (8) is a threaded rod, the feeding mechanism (7) is in threaded connection with the positioning rod (8), and the feeding mechanism (7) is connected with the device frame (1);
the position adjustment is realized by adjusting the threaded engagement position of the feeding mechanism (7) on the axis of the positioning rod (8).
4. A potentiostat electric heating element sleeve service milling device as claimed in claim 3, characterized in that the feed mechanism (7) comprises a hand wheel coaxial with the positioning rod (8) and for adjusting the threaded engagement position.
5. A stabiliser electric heating element bushing service hole milling apparatus as claimed in claim 1, further comprising a drive member (2) for driving the milling cutter (6) in rotation, said drive member being in driving connection with the milling cutter (6) through a transmission mechanism, and the drive member (2) being located laterally of the milling cutter (6).
6. A potentiostat electric heating element bushing maintenance milling device as claimed in claim 1, characterized in that it further comprises a driving member (2) for driving the rotation of the milling cutter (6), the driving member (2) being a pneumatic motor.
7. The stabilizer electric heating element bushing service milling apparatus of claim 6, further comprising a compressed gas control module for controlling air supply status and parameters of the air motor.
8. A pressurizer electric heating element bushing maintenance milling hole device according to claim 1, characterized in that a plurality of expansion units are arranged on the expansion end (4) annularly and evenly with respect to the axis of the positioning rod (8).
9. The pressurizer electric heating element bushing service hole milling device of claim 1, wherein the positioning rod (8) is a threaded rod threaded onto the device frame (1); and in the process that the threaded rod rotates around the axis of the threaded rod, the expansion end (4) expands or contracts according to different rotating directions.
10. Stabiliser electrical heating element bushing service hole milling device according to any of claims 1 to 9, characterized in that the milling cutter (6) is connected to the device frame (1) by means of a tool holder (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110119858.XA CN112916926A (en) | 2021-01-28 | 2021-01-28 | Hole milling device for maintaining bushing of electric heating element of voltage stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110119858.XA CN112916926A (en) | 2021-01-28 | 2021-01-28 | Hole milling device for maintaining bushing of electric heating element of voltage stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112916926A true CN112916926A (en) | 2021-06-08 |
Family
ID=76168120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110119858.XA Pending CN112916926A (en) | 2021-01-28 | 2021-01-28 | Hole milling device for maintaining bushing of electric heating element of voltage stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112916926A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1406811A (en) * | 1971-08-20 | 1975-09-17 | Borg Warner Stieber Gmbh | Workholding devices |
| CN87209720U (en) * | 1987-07-04 | 1988-04-20 | 颜发利 | High speed ringlike hole drill |
| CN2543640Y (en) * | 2001-12-10 | 2003-04-09 | 田祖国 | Milling cutter for dissecting contact welding point |
| CN1806979A (en) * | 2006-01-04 | 2006-07-26 | 王中华 | Ring-cutting knife |
| CN2907988Y (en) * | 2005-12-07 | 2007-06-06 | 蒋传庆 | Portable pipeline beveling machine |
| CN201320616Y (en) * | 2008-11-25 | 2009-10-07 | 高圣奎 | Pipeline mouth gag |
| CN102990138A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Hollow drill bit |
| CN106180838A (en) * | 2016-08-17 | 2016-12-07 | 山东太古飞机工程有限公司 | Aircraft pitting corrosion region point flush cut device |
| CN209424571U (en) * | 2018-12-29 | 2019-09-24 | 郑州汇之丰科技有限公司 | A kind of inner hole swelling fixture |
| CN110899745A (en) * | 2019-12-27 | 2020-03-24 | 西安航天动力机械有限公司 | Internal support tool for machining and trimming cylindrical part |
| CN210789292U (en) * | 2019-09-05 | 2020-06-19 | 无锡惠曼精密机械有限公司 | Expansion mandrel of precision machinery |
| CN111980585A (en) * | 2019-05-24 | 2020-11-24 | 江苏叁陆零工具有限公司 | Guiding expanding drill bit |
-
2021
- 2021-01-28 CN CN202110119858.XA patent/CN112916926A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1406811A (en) * | 1971-08-20 | 1975-09-17 | Borg Warner Stieber Gmbh | Workholding devices |
| CN87209720U (en) * | 1987-07-04 | 1988-04-20 | 颜发利 | High speed ringlike hole drill |
| CN2543640Y (en) * | 2001-12-10 | 2003-04-09 | 田祖国 | Milling cutter for dissecting contact welding point |
| CN2907988Y (en) * | 2005-12-07 | 2007-06-06 | 蒋传庆 | Portable pipeline beveling machine |
| CN1806979A (en) * | 2006-01-04 | 2006-07-26 | 王中华 | Ring-cutting knife |
| CN201320616Y (en) * | 2008-11-25 | 2009-10-07 | 高圣奎 | Pipeline mouth gag |
| CN102990138A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Hollow drill bit |
| CN106180838A (en) * | 2016-08-17 | 2016-12-07 | 山东太古飞机工程有限公司 | Aircraft pitting corrosion region point flush cut device |
| CN209424571U (en) * | 2018-12-29 | 2019-09-24 | 郑州汇之丰科技有限公司 | A kind of inner hole swelling fixture |
| CN111980585A (en) * | 2019-05-24 | 2020-11-24 | 江苏叁陆零工具有限公司 | Guiding expanding drill bit |
| CN210789292U (en) * | 2019-09-05 | 2020-06-19 | 无锡惠曼精密机械有限公司 | Expansion mandrel of precision machinery |
| CN110899745A (en) * | 2019-12-27 | 2020-03-24 | 西安航天动力机械有限公司 | Internal support tool for machining and trimming cylindrical part |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102489738B (en) | Method and device for machining inner blind hole of perforating gun for oil-gas well | |
| CN102425981B (en) | Tunneling embrasure positioning and guiding device and using method thereof | |
| CN105195781A (en) | Intelligent deep hole boring machine tool | |
| CN109746651A (en) | A kind of generator pit and end cap pin hole are the same as the processing method that drills and reams | |
| CN105612017A (en) | Tool spindle having an active magnetic bearing | |
| CN107008941B (en) | Tower type solar energy thermal power generation heliostat support girder combines drilling hole machine tool automatically | |
| CN104439355A (en) | Turnover chuck clamp for union elbows and machining method | |
| CN112916926A (en) | Hole milling device for maintaining bushing of electric heating element of voltage stabilizer | |
| KR100372272B1 (en) | Apparatus for replace a ring in opening/closing valve equipped in ducts or pipes for passage of fluid | |
| CN109290734A (en) | A kind of field repair equipment of large apertures | |
| CN109848359B (en) | Integral joint bearing bidirectional rotary swaging forming method | |
| CN103170683B (en) | Computer numerically controlled (CNC) gear hobbing machine clamping system | |
| CN112916910B (en) | Device and method for maintaining electric heating element of voltage stabilizer | |
| US2900879A (en) | Manufacture of seam-welded tubing | |
| CN109663946B (en) | Portable numerical control boring equipment for machining sealing surface of valve seat of gas turbine and application | |
| CN210633261U (en) | Multifunctional portable machine tool | |
| CN112775756B (en) | Grinding device in bushing hole of electric heating element of voltage stabilizer | |
| CN204338916U (en) | The turning chuck clamps of a kind of union elbow | |
| KR102021707B1 (en) | Maintenance equipment of pipe | |
| CN104325173A (en) | Process method for large-scale water turbine construction field shaft coupling blind hole boring | |
| EP3771077B1 (en) | Portable device and method for restoring the cylindricity of a generator conductor, in particular a turbo-generator conductor | |
| CN112705903B (en) | Lathe tailstock repairing method | |
| CN212793376U (en) | A on-machine reaming device for pipe | |
| CN220806111U (en) | Repairing device on wind power gear box parallel-stage box body bearing hole tower | |
| CN219052983U (en) | Position accuracy controllable combination drilling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210608 |