CN114700847A - Omnidirectional defect eliminating device for narrow space in barrel-like workpiece - Google Patents

Omnidirectional defect eliminating device for narrow space in barrel-like workpiece Download PDF

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Publication number
CN114700847A
CN114700847A CN202210316509.1A CN202210316509A CN114700847A CN 114700847 A CN114700847 A CN 114700847A CN 202210316509 A CN202210316509 A CN 202210316509A CN 114700847 A CN114700847 A CN 114700847A
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CN
China
Prior art keywords
omnibearing
defect
depth
barrel
fixing ring
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
Application number
CN202210316509.1A
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Chinese (zh)
Inventor
张安文
张志博
吕尚霖
范志东
闫俞廷
曹勇
王勇刚
杨光锐
贾若飞
马翼超
刘承鑫
牛坤
霍启军
谢玮
周昭亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Thermal Power Research Institute Co Ltd
Original Assignee
Xian Thermal Power Research Institute Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xian Thermal Power Research Institute Co Ltd filed Critical Xian Thermal Power Research Institute Co Ltd
Priority to CN202210316509.1A priority Critical patent/CN114700847A/en
Publication of CN114700847A publication Critical patent/CN114700847A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • 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
    • 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
    • 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
    • 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
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention provides an omnibearing defect eliminating device for a narrow space in a barrel-like workpiece, which comprises an omnibearing fixing ring and a depth-adjustable defect eliminating gun, wherein the depth-adjustable defect eliminating gun is slidably and rotatably arranged on the omnibearing fixing ring, and the omnibearing fixing ring is sleeved on the workpiece; the depth-adjustable defect eliminating gun comprises a driving mechanism, wherein a polishing head and an image detection unit are connected to the driving mechanism in a driving manner; the device can eliminate the defects of the inner wall of the barrel-like workpiece without entering a narrow space inside by personnel, and observe the state and elimination condition of the internal defects in real time; the field operation difficulty of workers is obviously reduced.

Description

Omnidirectional defect eliminating device for narrow space inside barrel-like workpiece
Technical Field
The invention belongs to the field of defect elimination, and particularly relates to an omnibearing defect elimination device for a narrow space inside a barrel-like workpiece.
Background
Industrial applicability many devices are designed to be approximately barrel-shaped with a narrow, deep space in between, such as large valves, thick-walled pipes, and the like. Internal defects are not completely avoided during the manufacturing of such devices. During long-term use, the inner wall of the equipment can also generate defects and expand, so that the use safety of the equipment is endangered. Eliminating such defects in time can increase the safety factor of the device. However, because the space in the middle of the equipment is narrow and deep, people can hardly enter the equipment, and even if people can enter the equipment, the difficulty in eliminating defects of the equipment operated in the equipment is high.
Disclosure of Invention
The invention aims to provide an omnibearing defect eliminating device for a narrow space inside a barrel-like workpiece, and the omnibearing defect eliminating device overcomes the defects in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides an omnibearing defect eliminating device for a narrow space in a barrel-like workpiece, which comprises an omnibearing fixing ring and a depth-adjustable defect eliminating gun, wherein the depth-adjustable defect eliminating gun is slidably and rotatably arranged on the omnibearing fixing ring, and the omnibearing fixing ring is sleeved on the workpiece;
the depth-adjustable defect eliminating gun comprises a driving mechanism, wherein the driving mechanism is in driving connection with a polishing head and an image detection unit.
Preferably, the omnibearing fixing ring comprises a fixing ring, and the fixing ring is sleeved on the workpiece; the upper end surface of the fixing ring is provided with a slide rail along the circumferential direction; the telescopic slide rail is connected with a slide block which is arranged on the depth-adjustable defect eliminating gun in a matching way.
Preferably, the top of the sliding rail is of a spherical structure; the slider is provided with a spherical groove, and the spherical groove is matched with the spherical structure.
Preferably, the fixing ring comprises two semicircular rings, and a single dovetail groove is formed in the middle combining part of each semicircular ring; the single dovetail grooves of the two semicircular rings are fixedly connected through double dovetail fixing pins.
Preferably, a plurality of fixed threaded pins are uniformly distributed in the circumferential direction of the fixed ring, and fixed feet are fixed at one ends of the fixed threaded pins; the fixing ring is fixed on the workpiece through the matching of a fixing pin and a fixing thread pin.
Preferably, the driving mechanism comprises a driving motor, the driving motor is connected with a transmission rod through a first gear set in a driving mode, and the transmission rod is connected with a polishing head and an image detection unit through a second gear set in a driving mode.
Preferably, the depth-adjustable defect eliminating gun is further connected with a depth fine adjustment mechanism for performing depth fine adjustment on the depth-adjustable defect eliminating gun.
Preferably, the depth fine-tuning mechanism comprises a threaded sliding rod case, a threaded sliding rod is arranged in the threaded sliding rod case, and a sliding block is connected to the threaded sliding rod in a sliding manner; the sliding block is fixed on the threaded sliding rod case.
Compared with the prior art, the invention has the beneficial effects that:
according to the omnibearing defect eliminating device for the narrow space inside the barrel-like workpiece, the depth-adjustable defect eliminating gun is slidably and rotatably arranged on the omnibearing fixing ring, the defects can be eliminated in an omnibearing manner, the depth-adjustable defect eliminating gun extends into the inner cavity of the workpiece, the inner cavity of the workpiece is subjected to image acquisition by matching with the image detection unit, and the defects are eliminated through the acquired image information; the field operation difficulty of workers is obviously reduced.
Furthermore, the fixing ring can be suitable for barrel-like workpieces with various outer wall sizes through the matching of the thread fixing pin and the fixing foot.
Furthermore, through the cooperation of slide and slider, can realize that the flexible rifle of welding slides rotatable on all-round solid fixed ring, and then realizes the multi-angle welding.
Furthermore, the depth of the workpiece can be adjusted by using a depth fine adjustment mechanism.
Drawings
FIG. 1 is a schematic view of a retaining ring;
FIG. 2 is a schematic view of a double eye tail retaining pin;
FIG. 3 is a schematic view of a single dovetail slot;
FIG. 4 is a schematic view of a depth adjustable defect elimination gun;
FIG. 5 is a structural diagram of a threaded sliding rod case, a slider, a threaded sliding rod, a slide rail and a fixing ring;
FIG. 6 is a schematic view of the position adjusting pin in a fixed state of the threaded sliding rod;
FIG. 7 is a schematic view of the position of the positioning pin in the movable state of the threaded sliding rod;
description of reference numerals:
1-fixed ring, 2-slide rail, 3-fixed thread pin, 4-fixed foot, 5-double-eye tail groove, 6-barrel-shaped workpiece, 7-double-dovetail fixed pin, 8-single dovetail groove, 9-driving motor, 10- #1 gear, 11- #2 gear, 12-transmission rod, 13- #3 gear, 14- #4 gear, 15-polishing head, 16-bearing, 17-thread sliding rod, 18-positioning pin, 19-pulling point, 20-camera, 21-annular searchlight, 22-display, 23-handle, 24-transmission shaft case, 25-thread sliding rod case, 26-front case, 27-rear case, 28-positioning pin hole, 29-slide block, 30-positioning spanner, 31-positioning pin cap.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but these descriptions are merely illustrative and are not intended to limit the scope of the present invention in any way.
The invention provides an omnibearing defect eliminating device for a narrow space in a barrel-like workpiece, which comprises an omnibearing fixing ring and a depth-adjustable defect eliminating gun, wherein the depth-adjustable defect eliminating gun is arranged on the omnibearing fixing ring and slides along the circumferential direction of the omnibearing fixing ring.
The omnibearing fixing ring comprises a fixing ring 1, and the fixing ring 1 is sleeved on a workpiece; the upper end face of the fixing ring 1 is provided with a slide rail 2 along the circumferential direction.
The slide rail 2 is connected with a slide block 29 in a matching and sliding mode, and the slide block 29 is installed on the gun capable of adjusting the depth.
A plurality of fixed threaded pins 3 are uniformly distributed in the circumferential direction of the fixed ring 1, and fixed pins 4 are fixed at one ends of the fixed threaded pins 3; the fixing ring 1 is fixed on a workpiece through the matching of a fixing pin 4 and a fixing thread pin 3.
The fixing ring 1 comprises two semicircular rings which are connected in a butt joint mode to form the fixing ring 1.
The joint surface of the fixing foot 4 and the workpiece is an arc surface and is used for stably fixing the connection between the threaded pin 3 and the workpiece.
A single dovetail groove 8 is formed in the middle combining part of each semicircular ring; the two semicircular rings are fixedly connected through a double-dovetail fixing pin 7.
The double-dovetail fixing pin 7 is installed in the single dovetail groove 8 of the two semicircular rings in a matching mode.
The single dovetail groove 8 is formed along the axial direction of the fixing ring.
The defect eliminating gun with the adjustable depth comprises a front case 26, wherein one end of the front case 26 is fixedly connected with a transmission shaft case 24, and the other end of the transmission shaft case 24 is fixedly connected with a rear case 27.
The front chassis 26, the transmission shaft chassis 24 and the rear chassis 27 are communicated in sequence.
The depth-adjustable defect eliminating gun further comprises a driving mechanism, and the driving mechanism is in driving connection with a polishing head 15 and an image detection unit.
The driving mechanism comprises a driving motor 9, a first gear 10 is sleeved at the output end of the driving motor 9, a second gear 11 is connected to the first gear 10 in a meshed mode, and the second gear 11 is sleeved on a transmission rod 12.
The driving motor 9, the first gear 10 and the second gear 11 are all arranged in the inner cavity of the front chassis 26.
The drive rod 12 is arranged in the interior of the drive shaft housing 24.
The bearing 16 is arranged at the joint between the transmission case 24 and the front case 26, and the bearing 16 is rotatably connected with the transmission rod 12.
The joint between the drive shaft housing 24 and the rear housing 27 is provided with a bearing which is rotatably connected to the free end of the drive rod 12.
The free end of the transmission rod 12 is provided with a first bevel gear 13, the first bevel gear 13 is in meshing connection with a second bevel gear 14, and the second bevel gear 14 is connected with a polishing head 15.
Both the first bevel gear 13 and the second bevel gear 14 are arranged in the inner cavity of the rear cabinet 27.
The first bevel gear 13 is sleeved on a first rotating shaft, one end of the first rotating shaft is fixed at the free end of the transmission rod 12, and the other end of the first rotating shaft is rotatably installed on the rear case 27 through a bearing.
The second bevel gear 14 is sleeved on the second rotating shaft, and the free end of the second rotating shaft is rotatably mounted on the rear case 27 through a bearing.
The polishing head 15 is fixedly connected with the second bevel gear 14.
The first rotating shaft and the second rotating shaft are rotatably connected with the rear case 27 through bearings.
The sanding head 15 is placed outside the rear cabinet 27.
An annular searchlight 27 and two cameras 20 are mounted on the outer wall of the rear cabinet 27 on the side facing the sanding head 15, wherein the two cameras are respectively arranged on two sides of the annular searchlight 27.
The outer wall of the transmission shaft case 24 is fixedly connected with a threaded sliding rod case 25, a threaded sliding rod 17 is arranged in the threaded sliding rod case 25, and a sliding block 29 is connected to the threaded sliding rod 17 in a sliding mode.
The slider 29 is fixed to the screw-slide bar housing 25.
The axial direction of the threaded sliding rod 17 coincides with the axial direction of the transmission rod 12.
The two ends of the threaded sliding rod 17 are rotatably connected with the threaded sliding rod case 25 through bearings.
The screw thread slide bar 17 is provided with the positioning pin 18 near the one end tip of preceding quick-witted case one side, the top of positioning pin 18 is connected with positioning pin cap 31, positioning pin 18 and positioning pin cap 31 formula structure as an organic whole.
The center of the top of the positioning pin cap 31 is provided with a pull-out point 19.
The positioning pin cap 31 is arranged on the threaded sliding rod case 25 and is of an irregular structure, so that the positioning pin is convenient to limit.
The slider 29 is provided with a spherical groove which is matched with the spherical structure at the top of the slide rail 2.
The image detection unit comprises a camera, the camera is used for collecting image information of the inner cavity of the workpiece and transmitting the collected image information to the display 22, and the display 22 is installed on the outer wall of the front case.
The working process of the invention is as follows:
as shown in fig. 1, the present invention includes a fixing ring 1 divided into upper and lower semicircles, a dovetail groove 8 (see fig. 3) is formed at a middle combining portion, and the fixing ring of the two semicircles is fixed by a double-dovetail fixing pin 7 (see fig. 2). The fixing ring 1 is fixed to the outer wall of the barrel-shaped workpiece 6 by fixing threaded pins 3 and fixing legs 4. The fixed ring is provided with a slide rail 2.
As shown in fig. 4, the present invention comprises a depth-adjustable defect-eliminating gun, wherein a driving motor 9 is installed at one end of the gun to drive a first gear 10 to rotate a second gear 11, and further drive a transmission rod 12 to rotate. The transmission rod 12 drives the first bevel gear 13 to rotate, and further drives the second bevel gear 14 to rotate; the second bevel gear 14 drives the sanding head 15 to rotate, and the elimination of the inner wall of the barrel-like workpiece is realized.
The position adjusting pin cap 31 can be screwed by the position adjusting wrench 30, and then the position adjusting pin 18 drives the threaded sliding rod 17 to rotate, and the sliding rod 29 is fixed, so that the threaded sliding rod 17 can move linearly while rotating, and further the depth adjustable defect is driven to eliminate the gun to move along the depth direction of the barrel-like workpiece.
The annular searchlight 21 can realize the function of shadowless searchlight.
The camera 20 observes the internal defect elimination condition and transmits the internal defect elimination condition to the display 22 in real time, and an operator eliminates the defect by observing the influence on the display 22 and the operating handle 23; the defect eliminating gun has the fixing ring as the support during the operation, and is labor-saving and stable.
As shown in fig. 5, the slider 29 is mounted in the screw-sliding-rod housing 25, the screw-sliding rod 17 passes through the slider 29, and the slider 29 is slidable in the axial direction along the screw-sliding rod 17; the sliding block 29 is assembled on the sliding rail 2 and can slide along the axial direction of the sliding rail 2; the sliding block 29 can be connected with the sliding rail 2 through a spherical structure, so that the sliding block can rotate on the sliding rail 2; the effect of all-round disappearance is realized through above a plurality of connected modes. The opening L of the sliding block 29 is larger than the diameter D of the spherical head of the sliding rail 2, so that the sliding block 29 cannot fall off while rotating on the sliding rail 2.
Fig. 6 and 7 are schematic views of the threaded sliding rod and the positioning pin in a fixed state and a positioning state, respectively. As shown in fig. 6, in the fixed state, the positioning pin 18 is inserted into the positioning pin hole 28, and the positioning pin cap 31 is restricted from rotation by the screw slide bar housing 25, thereby fixing the slider position. As shown in fig. 7, in the positioning state, the positioning pin 18 is pulled out through the pull-out point 19, and the threaded slide rod 17 is rotated by rotating the positioning pin cap 31 with a positioning wrench, so that the slider 29 is moved in the axial direction of the threaded slide rod 17, thereby achieving axial positioning.
The invention is fixed on the outer wall of the barrel-like equipment by an omnibearing fixing ring by a fixing thread pin and a fixing foot.
The invention selects the fixed thread pins with different lengths or screws the fixed thread pins into different depths to be fixed on the outer walls of the barrel-shaped equipment with different outer diameters.
The fixing ring is divided into an upper semicircle and a lower semicircle which are connected by a double-dovetail fixing pin.
The fixing ring is provided with the slideway, and the defect eliminating gun with adjustable depth is arranged on the slideway and can slide along the slideway, so that the defect eliminating at multiple angles is realized.
According to the invention, the defect of adjustable depth is overcome, and the sliding block connected with the slide way and the gun can rotate along the cross section of the slide way, so that multi-angle defect elimination is realized.
The depth-adjustable defect of the invention eliminates the defect that a sliding rod is arranged on the gun. The slide block on the depth-adjustable defect eliminating gun can slide along the slide way on the fixing ring and can also slide along the slide rod on the depth-adjustable defect eliminating gun.
The depth-adjustable type electric gun has the defect that the electric motor is arranged on the gun, the driving gear drives the transmission rod to rotate, and the transmission rod drives the gear and the polishing head to rotate.
The adjustable depth type projector overcomes the defect that an annular lamp is arranged on a gun, and shadowless searchlighting is realized.
The depth-adjustable defect eliminating gun is provided with the camera, so that the internal influence can be transmitted to the display screen, and an operator observes the defect condition through the display screen.

Claims (8)

1. An omnibearing defect eliminating device for a narrow space inside a barrel-like workpiece is characterized by comprising an omnibearing fixing ring and a depth-adjustable defect eliminating gun, wherein the depth-adjustable defect eliminating gun is slidably and rotatably arranged on the omnibearing fixing ring, and the omnibearing fixing ring is sleeved on the workpiece;
the depth-adjustable defect eliminating gun comprises a driving mechanism, wherein the driving mechanism is in driving connection with a polishing head (15) and an image detection unit.
2. The device for eliminating the omnibearing defect in the narrow space inside the barrel-shaped workpiece according to claim 1, wherein the omnibearing fixing ring comprises a fixing ring (1), and the fixing ring (1) is sleeved on the workpiece; the upper end surface of the fixed ring (1) is provided with a slide rail (2) along the circumferential direction; the telescopic sliding rail (2) is matched and connected with a sliding block (29) arranged on the depth-adjustable defect eliminating gun.
3. The device for eliminating the omnibearing defect in the narrow space inside the barrel-shaped workpiece according to claim 2, wherein the top of the sliding rail (2) is of a spherical structure; the sliding block (29) is provided with a spherical groove, and the spherical groove is matched with the spherical structure.
4. The omnibearing defect eliminating device for the narrow space inside the barrel-shaped workpiece according to claim 2, wherein the fixing ring (1) comprises two semicircular rings, and a single dovetail groove (8) is formed in the middle combining part of each semicircular ring; the single dovetail grooves (8) of the two semicircular rings are fixedly connected through a double-dovetail fixing pin (7).
5. The device for eliminating the omnibearing defect in the narrow space inside the barrel-shaped workpiece according to claim 2, characterized in that a plurality of fixed threaded pins (3) are uniformly distributed in the circumferential direction of the fixed ring (1), and a fixed foot (4) is fixed at one end of each fixed threaded pin (3); the fixing ring (1) is fixed on a workpiece through the matching of a fixing foot (4) and a fixing thread pin (3).
6. The device for eliminating the omnibearing defects in the narrow space inside a barrel-shaped workpiece according to claim 1, wherein the driving mechanism comprises a driving motor (9), the driving motor (9) is in driving connection with a transmission rod (12) through a first gear set, and the transmission rod (12) is in driving connection with a polishing head (15) and an image detection unit through a second gear set.
7. The omnibearing defect elimination device for the narrow space inside the barrel-shaped workpiece according to claim 1, wherein the depth-adjustable defect elimination gun is further connected with a depth fine adjustment mechanism for fine adjustment of the depth-adjustable defect elimination gun.
8. The device for eliminating the omnibearing defect in the narrow space inside the barrel-shaped workpiece according to claim 7, wherein the depth fine-tuning mechanism comprises a threaded sliding rod case (25), a threaded sliding rod (17) is arranged in the threaded sliding rod case (25), and a sliding block (29) is connected on the threaded sliding rod (17) in a sliding way; the sliding block (29) is fixed on the threaded sliding rod case (25).
CN202210316509.1A 2022-03-28 2022-03-28 Omnidirectional defect eliminating device for narrow space in barrel-like workpiece Pending CN114700847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210316509.1A CN114700847A (en) 2022-03-28 2022-03-28 Omnidirectional defect eliminating device for narrow space in barrel-like workpiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210316509.1A CN114700847A (en) 2022-03-28 2022-03-28 Omnidirectional defect eliminating device for narrow space in barrel-like workpiece

Publications (1)

Publication Number Publication Date
CN114700847A true CN114700847A (en) 2022-07-05

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CN202210316509.1A Pending CN114700847A (en) 2022-03-28 2022-03-28 Omnidirectional defect eliminating device for narrow space in barrel-like workpiece

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018069386A (en) * 2016-10-31 2018-05-10 Ｊｆｅスチール株式会社 Inner pipe surface grinding apparatus for large-diameter steel pipe
CN108555710A (en) * 2018-06-28 2018-09-21 宁波高新区起兴机电有限公司 A kind of high precision grinding machine for the polishing of large-size pipe endoporus
CN208342404U (en) * 2018-05-11 2019-01-08 合肥鼎鑫模具有限公司 A kind of round tank wall mould grinding apparatus
CN110497267A (en) * 2019-08-19 2019-11-26 潘凤春 It is a kind of can centralized positioning inner hole straight grinder chuck mechanism
CN212093612U (en) * 2020-04-30 2020-12-08 武汉奥克化学有限公司 Cleaning device of polymer stirrer
CN214923213U (en) * 2021-04-21 2021-11-30 深圳市古安泰自动化技术有限公司 Visual polisher
KR20220021776A (en) * 2020-08-14 2022-02-22 대우조선해양 주식회사 Apparatus for grinding pipe inner surface

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018069386A (en) * 2016-10-31 2018-05-10 Ｊｆｅスチール株式会社 Inner pipe surface grinding apparatus for large-diameter steel pipe
CN208342404U (en) * 2018-05-11 2019-01-08 合肥鼎鑫模具有限公司 A kind of round tank wall mould grinding apparatus
CN108555710A (en) * 2018-06-28 2018-09-21 宁波高新区起兴机电有限公司 A kind of high precision grinding machine for the polishing of large-size pipe endoporus
CN110497267A (en) * 2019-08-19 2019-11-26 潘凤春 It is a kind of can centralized positioning inner hole straight grinder chuck mechanism
CN212093612U (en) * 2020-04-30 2020-12-08 武汉奥克化学有限公司 Cleaning device of polymer stirrer
KR20220021776A (en) * 2020-08-14 2022-02-22 대우조선해양 주식회사 Apparatus for grinding pipe inner surface
CN214923213U (en) * 2021-04-21 2021-11-30 深圳市古安泰自动化技术有限公司 Visual polisher

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Application publication date: 20220705

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