CN111360621B - Deburring device for inner wall of steel pipe - Google Patents
Deburring device for inner wall of steel pipe Download PDFInfo
- Publication number
- CN111360621B CN111360621B CN202010186927.4A CN202010186927A CN111360621B CN 111360621 B CN111360621 B CN 111360621B CN 202010186927 A CN202010186927 A CN 202010186927A CN 111360621 B CN111360621 B CN 111360621B
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- China
- Prior art keywords
- steel pipe
- wall
- gear
- fixed box
- bearing
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- 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.)
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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
- 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
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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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
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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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
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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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- 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
- 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
- B24B5/40—Single-purpose machines or devices for grinding tubes internally
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to the technical field of intelligent equipment and discloses a deburring device for the inner wall of a steel pipe, which comprises a workbench, wherein a fixed box is fixedly arranged on the left side of the upper part of the workbench, a fluted disc is arranged in the inner cavity of the fixed box, clamping blocks are uniformly clamped on the right part of the fixed box, a bearing table is fixedly arranged on the right side of the upper part of the workbench, a driving device is fixedly arranged at the lower end of the bearing table, a bearing is slidably connected to the upper part of the bearing table, a rotary drum is fixedly connected to the middle part of the bearing, and a telescopic rod is arranged in. This a burring device for steel pipe inner wall drives the clamp splice through the fluted disc and fixes the steel pipe, and the interval of head is polished in the cooperation telescopic link regulation, and drive arrangement drives the rotary drum rotatory to reached and to have pressed from both sides tightly the steel pipe of equidimension not, can carry out the inner wall burring to the steel pipe of equidimension not, promoted the stability of device work, the thorough effect of deburring.
Description
Technical Field
The invention relates to the technical field of intelligent equipment, in particular to a deburring device for an inner wall of a steel pipe.
Background
In the life nowadays, steel pipes are widely used, and can be applied to conveying pipelines, engineering structures, thermal equipment, petrochemical industry, mechanical manufacturing, geological drilling, high-pressure equipment and the like, while in the manufacturing process of the steel pipes, the two ends of the steel pipes are generally required to be cut, burrs are left on the inner circular opening and the outer circular opening of the steel pipes after the ends are cut, so that the use is influenced, and the operation of workers is also hindered.
Actually, when the deburring work is carried out on the inner part of the steel pipe, only a distance close to the inner wall of the end part of the steel pipe is needed to remove burrs, but the existing deburring device generally used for the inner wall of the steel pipe is difficult to install and fix steel pipes with different sizes in the using process, a polishing head which extends into the inner wall of the steel pipe is difficult to be attached to the steel pipes with different pipe diameters, in addition, the existing deburring device for the inner wall of the steel pipe has large vibration in the using process, the fixing device for the steel pipe is easy to loose, the stability is low, the burrs are not removed thoroughly, and further, the use of people is inconvenient,
disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the deburring device for the inner wall of the steel pipe, which has the advantages of clamping steel pipes with different sizes, deburring the inner walls of the steel pipes with different sizes, improving the working stability of the device, removing burrs thoroughly and the like, and solves the problems that the common deburring device for the inner wall of the steel pipe cannot clamp the steel pipes with different sizes, cannot deburr the inner walls of the steel pipes with different sizes, is not stable enough during the working of the device, and cannot remove burrs thoroughly.
(II) technical scheme
In order to realize the purposes of clamping steel pipes with different sizes, deburring the inner walls of the steel pipes with different sizes, improving the working stability of the device, removing burrs thoroughly and the like, the invention provides the following technical scheme: a deburring device for the inner wall of a steel pipe comprises a workbench, wherein a fixed box is fixedly installed on the left side of the upper portion of the workbench, a fluted disc is arranged in an inner cavity of the fixed box, a spiral groove is formed in the right wall of the fluted disc, a clamping block is uniformly clamped and connected to the right portion of the fixed box, an adjusting gear meshed and connected with the fluted disc is arranged in the inner cavity of the fixed box, a rotating shaft is fixedly connected in front of the adjusting gear, a thread sleeve extending to the outer portion of the fixed box is movably clamped and connected to the rotating shaft, a bearing table is fixedly installed on the right side of the upper portion of the workbench, a driving device is fixedly installed at the lower end of the bearing table, a first gear is arranged on the right side of the driving device, a bearing is slidably connected to the upper portion of the bearing table, a rotating drum is fixedly connected to the middle of the bearing, the inner chamber of rotary drum is provided with the telescopic link, and the left side fixedly connected with slider of telescopic link, the holding tank has been seted up to the left part of slider, and the left side of rotary drum is provided with the locating lever of symmetry, and the connecting rod that extends to in the holding tank has been cup jointed in the activity on the locating lever, and the one end that just is located keeping away from the holding tank on the connecting rod is provided with the head of polishing.
Preferably, the fixed box is provided with a clamping groove matched with the clamping block, and when the fluted disc 3 rotates, the clamping block can correspondingly stretch in the clamping groove.
Preferably, the upper portion and the lower part of the rotating shaft are both provided with rectangular grooves matched with the threaded sleeves, and the threaded sleeves can move inwards or outwards while driving the rotating shaft to rotate by utilizing the rectangular grooves.
Preferably, the upper part of the bearing table is provided with a sliding chute matched with the bearing, and the bearing can move left and right under the driving of the rotary drum.
Preferably, the width of the first gear is greater than that of the second gear, and the second gear moves left and right under the driving of the rotating drum, so that the width of the first gear needs to be sufficient to ensure that the second gear and the first gear are always in meshed connection.
Preferably, the portion of the link extending into the receiving groove is provided with a ball, and when the slider is pushed to move, the ball on the slider causes the link to deflect at a desired angle.
(III) advantageous effects
Compared with the prior art, the invention provides a deburring device for the inner wall of a steel pipe, which has the following beneficial effects:
1. this a burring device for steel pipe inner wall, it is rotatory through the fluted disc, utilize the helicla flute to drive the clamp splice and move to the inboard or outside, can adjust and press from both sides tight size to reached and to press from both sides tight effect to the steel pipe of unidimensional not.
2. This a burring device for steel pipe inner wall, through set up the rectangular channel in the pivot with adjusting gear fixed connection, the outside joint thread bush of rectangular channel, cooperation thread bush and fixed case threaded connection, when the head of polishing polishes the steel pipe inner wall, because adjusting gear is in the stationary state, the fluted disc of being connected with the adjusting gear meshing can not appear the automatic deflection phenomenon promptly, corresponding clamp splice can not remove promptly, the steel pipe is pressed from both sides by firm clamp all the time, thereby the effect that has promoted the stability of device work has been reached.
3. This a burring device for steel pipe inner wall through starting the telescopic link, makes the telescopic link extension certain distance, drives connecting rod certain angle of deflecting to both sides about, and corresponding messenger polishes the head and contacts with the inner wall of steel pipe to reached and to carry out the effect of inner wall burring to the steel pipe of equidimension not.
4. This a burring device for steel pipe inner wall, drive a gear through start-up drive arrangement and rotate, gear one drives the rotary drum part rotation through two gears of meshing promptly, the left head of polishing of rotary drum is rotatory promptly and is polished the getting rid of to the burr of steel pipe inner wall, still will be under the effect of guide bar during synchronous rotary drum is rotatory, utilize the arc groove to drive the whole upper portion of plummer and remove, then make the head of polishing remove about in the inner chamber of steel pipe and polish, with the burr that gets rid of the probably production of corresponding region, thereby reached the thorough effect of deburring.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a right side elevational view of a connecting portion of a chainring or the like in accordance with the present invention;
FIG. 3 is a left side elevational view of a portion of the fluted disc or the like in accordance with the present invention;
FIG. 4 is a top view of the holding tank of the present invention;
FIG. 5 is a right side view of a connection portion such as a threaded sleeve of the present invention;
FIG. 6 is a front sectional view of the connecting portion of the drum and the like of the present invention.
In the figure: 1-workbench, 2-fixed box, 3-fluted disc, 4-spiral groove, 5-clamping block, 6-adjusting gear, 7-rotating shaft, 8-thread sleeve, 9-bearing table, 10-driving device, 11-gear I, 12-bearing, 13-rotating drum, 14-arc groove, 15-guide rod, 16-gear II, 17-telescopic rod, 18-sliding block, 19-holding tank, 20-positioning rod, 21-connecting rod and 22-polishing head.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1-6, a deburring device for inner walls of steel pipes comprises a worktable 1, a fixed box 2 is fixedly installed on the left side of the upper portion of the worktable 1, a screw hole matched with a threaded sleeve 8 is formed in the front portion of the fixed box 2, a clamping groove matched with a clamping block 5 is formed in the fixed box 2, when a fluted disc 3 rotates, the clamping block 5 correspondingly extends and retracts in the clamping groove, a fluted disc 3 is arranged in an inner cavity of the fixed box 2, a spiral groove 4 is formed in the right wall of the fluted disc 3, the clamping block 5 is uniformly clamped and connected to the right portion of the fixed box 2, an adjusting gear 6 meshed and connected with the fluted disc 3 is arranged in the inner cavity of the fixed box 2, a rotating shaft 7 is fixedly connected in front of the adjusting gear 6, rectangular grooves matched with the threaded sleeve 8 are formed in the upper portion and the lower portion of the rotating shaft 7, the threaded sleeve 8 can move inwards or outwards while driving the rotating shaft 7 to rotate by the rectangular grooves, the rotating shaft 7 is movably clamped, the front end of the threaded sleeve 8 is provided with a rocking handle, the right side of the upper part of the workbench 1 is fixedly provided with a bearing platform 9, the upper part of the bearing platform 9 is provided with a sliding groove matched with a bearing 12, the bearing 12 can move left and right under the driving of a rotary drum 13, the lower end of the bearing platform 9 is fixedly provided with a driving device 10, the right side of the driving device 10 is provided with a first gear 11, the width of the first gear 11 is larger than that of a second gear 16, the second gear 16 can move left and right under the driving of the rotary drum 13, so that the width of the first gear 11 is enough to ensure that the second gear 16 is always meshed and connected with the first gear 11, the upper part of the bearing platform 9 is slidably connected with the bearing 12, the middle part of the bearing 12 is fixedly connected with the rotary drum 13, the right surface of the rotary drum 13 is provided with an arc-shaped groove 14, a guide rod 15, the inner chamber of rotary drum 13 is provided with telescopic link 17, the left side fixedly connected with slider 18 of telescopic link 17, holding tank 19 has been seted up to the left part of slider 18, the left side of rotary drum 13 is provided with the locating lever 20 of symmetry, connecting rod 21 that extends to in holding tank 19 has been cup jointed in the activity on the locating lever 20, the part that connecting rod 21 extends to in the holding tank 19 is provided with the spheroid, when slider 18 is promoted to move, spheroid on the slider 18 can make connecting rod 21 take place required angle and deflect, the one end that just is located to keep away from holding tank 19 on the connecting rod 21 is provided with the head of polishing 22.
The working principle is as follows: the deburring device for the inner wall of the steel pipe comprises a steel pipe, a threaded sleeve 8 and a rotating shaft 7 are driven to rotate by a rocking handle through inserting the steel pipe into an inner cavity of a fixed box 2 and passing through the middle part of a fluted disc 3, an adjusting gear 6 drives the fluted disc 3 to rotate, a spiral groove 4 on the fluted disc 3 can correspondingly cause a clamping block 5 to move inwards or outwards to adjust the clamping size, then an expansion rod 17 is started to extend a certain distance, an upper connecting rod 21 and a lower connecting rod 21 are driven to deflect a certain angle towards two sides, a grinding head 22 is correspondingly contacted with the inner wall of the steel pipe, a driving device 10 is started to drive a gear I11 to rotate in a matching manner, the gear I11 drives a rotary drum 13 to partially rotate through a meshed gear II 16, the grinding head 22 on the left side of the rotary drum 13 rotates to grind and remove burrs on the inner wall of the steel pipe, the synchronous rotary drum 13 also drives a bearing 12 to integrally move left and right on the, make then to polish 22 and remove about in the inner chamber of steel pipe and polish, in order to get rid of the burr that corresponding region probably produced, in addition through set up the rectangular channel on pivot 7 with adjusting gear 6 fixed connection, the outside joint thread bush 8 of rectangular channel, cooperation thread bush 8 and fixed case 2 threaded connection, when polishing 22 polishes the steel pipe inner wall, because adjusting gear 6 is in the fixed state, automatic deflection phenomenon can not appear promptly with fluted disc 3 that adjusting gear 6 meshing is connected, corresponding clamp splice 5 can not remove, the steel pipe is firmly pressed from both sides all the time, thereby reached and to have pressed from both sides tightly the steel pipe of unidimensional not, can carry out the inner wall burring to the steel pipe of unidimensional not, the stability of device work has been promoted, the thorough effect of deburring.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a burring device for steel pipe inner wall, includes workstation (1), its characterized in that: the upper left side of the workbench (1) is fixedly provided with a fixed box (2), an inner cavity of the fixed box (2) is provided with a fluted disc (3), a spiral groove (4) is formed in the right wall of the fluted disc (3), a clamping block (5) is uniformly clamped at the right part of the fixed box (2), an adjusting gear (6) meshed with the fluted disc (3) is arranged in the inner cavity of the fixed box (2), a rotating shaft (7) is fixedly connected in front of the adjusting gear (6), a threaded sleeve (8) extending to the outside of the fixed box (2) is movably clamped on the rotating shaft (7), a bearing table (9) is fixedly arranged at the right side of the upper part of the workbench (1), a driving device (10) is fixedly arranged at the lower end of the bearing table (9), a first gear (11) is arranged at the right side of the driving device (10), a bearing (12) is slidably connected to the upper part of the bearing table (9), arc groove (14) have been seted up on the right part surface of rotary drum (13), and the top of plummer (9) is provided with guide bar (15) that extend to arc groove (14) inner chamber, and the right-hand member of rotary drum (13) is provided with gear two (16), gear one (11) mesh with gear two (16), and the inner chamber of rotary drum (13) is provided with telescopic link (17), and the left side fixedly connected with slider (18) of telescopic link (17), holding tank (19) have been seted up to the left part of slider (18), and the left side of rotary drum (13) is provided with locating lever (20) of symmetry, and movable sleeve joint has been gone up in locating lever (20) has been extended to connecting rod (21) in holding tank (19), and the one end that just is located to keep away from holding tank (19) on connecting.
2. The deburring device for the inner wall of the steel pipe as claimed in claim 1, wherein: and the fixed box (2) is provided with a clamping groove matched with the clamping block (5).
3. The deburring device for the inner wall of the steel pipe as claimed in claim 1, wherein: and rectangular grooves matched with the threaded sleeves (8) are formed in the upper part and the lower part of the rotating shaft (7).
4. The deburring device for the inner wall of the steel pipe as claimed in claim 1, wherein: the upper part of the bearing platform (9) is provided with a sliding chute matched with the bearing (12).
5. The deburring device for the inner wall of the steel pipe as claimed in claim 1, wherein: the width of the first gear (11) is larger than that of the second gear (16).
6. The deburring device for the inner wall of the steel pipe as claimed in claim 1, wherein: the part of the connecting rod (21) extending into the accommodating groove (19) is provided with a spherical body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110159558.4A CN112975629A (en) | 2020-03-17 | 2020-03-17 | Deburring device for inner wall of steel pipe and using method of deburring device |
| CN202010186927.4A CN111360621B (en) | 2020-03-17 | 2020-03-17 | Deburring device for inner wall of steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010186927.4A CN111360621B (en) | 2020-03-17 | 2020-03-17 | Deburring device for inner wall of steel pipe |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110159558.4A Division CN112975629A (en) | 2020-03-17 | 2020-03-17 | Deburring device for inner wall of steel pipe and using method of deburring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111360621A CN111360621A (en) | 2020-07-03 |
| CN111360621B true CN111360621B (en) | 2021-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010186927.4A Active CN111360621B (en) | 2020-03-17 | 2020-03-17 | Deburring device for inner wall of steel pipe |
| CN202110159558.4A Pending CN112975629A (en) | 2020-03-17 | 2020-03-17 | Deburring device for inner wall of steel pipe and using method of deburring device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110159558.4A Pending CN112975629A (en) | 2020-03-17 | 2020-03-17 | Deburring device for inner wall of steel pipe and using method of deburring device |
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| Country | Link |
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| CN (2) | CN111360621B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112494730B (en) * | 2020-11-26 | 2022-06-28 | 中国人民解放军陆军军医大学第一附属医院 | Convenient otolaryngology branch of academic or vocational study nursing of clearance is with inhaling phlegm equipment |
| CN112692673A (en) * | 2020-12-24 | 2021-04-23 | 上海钢度电子商务有限公司 | Processing device for removing burrs in steel transportation |
| CN113211248A (en) * | 2021-05-20 | 2021-08-06 | 巴富萍 | Adjustable ring part internal surface polishes processingequipment |
| CN113977383B (en) * | 2021-11-25 | 2022-09-13 | 邢万存 | Deburring device for machining |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09117847A (en) * | 1995-10-27 | 1997-05-06 | Kyushu Koatsu Concrete Kogyo Kk | Concrete pipe inner surface grinding machine |
| CN208468097U (en) * | 2018-07-10 | 2019-02-05 | 大连万锋模具配件有限公司 | A kind of metal lining grinding clamping fixture |
| CN209491585U (en) * | 2018-11-27 | 2019-10-15 | 长春市御龙电锅炉有限公司 | A kind of semi-conductor electricity boiler stainless steel pipes processing unit (plant) |
| CN110153863A (en) * | 2019-05-07 | 2019-08-23 | 中国石油天然气股份有限公司 | A kind of pipeline flush displacing device |
-
2020
- 2020-03-17 CN CN202010186927.4A patent/CN111360621B/en active Active
- 2020-03-17 CN CN202110159558.4A patent/CN112975629A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN111360621A (en) | 2020-07-03 |
| CN112975629A (en) | 2021-06-18 |
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Effective date of registration: 20210318 Address after: 201803 area a, building 1, No. 655, Baoyuan 4th Road, Jiangqiao Town, Jiading District, Shanghai Applicant after: Shanghai Kaiteng metal products Co.,Ltd. Address before: 2132, 2 / F, no.6, Daxian Road, Chaoyang District, Beijing 100020 Applicant before: Luo Chun |
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