CN106271354A - A kind of self centering internal stay tool - Google Patents
A kind of self centering internal stay tool Download PDFInfo
- Publication number
- CN106271354A CN106271354A CN201610749071.0A CN201610749071A CN106271354A CN 106271354 A CN106271354 A CN 106271354A CN 201610749071 A CN201610749071 A CN 201610749071A CN 106271354 A CN106271354 A CN 106271354A
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- Prior art keywords
- gear
- worm
- rotary steering
- ring
- screw
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
A kind of self centering internal stay tool, rotary steering ring set is contained in flexible centering body and matched in clearance therebetween.The sphere end of the expansion screw in each extrusome is each passed through the pilot hole being positioned on rotary steering ring circumferential surface and loads the chute on flexible centering body circumferential surface.It is fixed with worm screw centrally through bearing at flexible centering body.Worm gear/gear arrangement is arranged on the disc surfaces of flexible centering body by bearing；Turbine body in worm gear/gear arrangement is engaged with worm screw, and the gear mass of worm gear/gear arrangement engages with the ring gear section being positioned at rotary steering ring end face, makes to produce relative rotation between worm gear/gear arrangement and ring gear section.In work all of stretching block can simultaneous retractable, and the centre of location is the most constant, it is possible to realize self-centering.Determine that the center of stretching rear cylinder body or housing, become round while being also achieved that cylinder or housing stretching.
Description
Technical field
The present invention relates to field of machining, a kind of manufacture for space rocket engine metal housing and pressure
The self centering internal stay tool that force container and other field thin-wall barrel class part manufacture.
Background technology
In the manufacture that space rocket engine metal housing manufactures with various pressure vessels, cylinder and housing are substantially
The thin wall cylinder section processing being welded into shape or mould pressing by sheet material volume is welded, and either the cylinder section of mould pressing is still rolled up and is welded into
The cylinder section of shape has bigger deformation, and processing, cylinder section in cylinder section are required for the assembly welding of cylinder section and the processing of formation housing
By the clamping of cylinder section or stretching and just can be processed and weld after making it become round, generally, for diameter less than 300mm and little
The cylinder of opening, housing then, diameter proper with outer fixture all can use more than the inside and outside clamping of 300mm～600mm and straight
Footpath is more suitable more than having with internal stay of 600mm. and traditional inside and outside clamp system substantially carries out centering, then on lathe
Being adjusted one by one with bolt, stretching block or stretching block stretch and realize cylinder, cylinder section or housing clamping or stretching and make it become
The process of circle, this is accomplished by centering repeatedly, repeatedly adjusts bolt, and so, inefficiency, labor intensity are big.
In the most published technical literature and patented technology, structure and the operation principle of internal stay tool have various shape
Formula, but do not have to find the structure similar with the present invention and principle.
Summary of the invention
Need centering repeatedly present in prior art for overcoming, repeatedly adjust inefficiency, work that bolt causes
The deficiency that intensity is big, the present invention proposes a kind of self centering internal stay tool.
The present invention includes rotary steering ring, flexible centering body, ring gear section, disjunctor worm-gear toothing wheel body, slewing limit block, axle
To block, worm screw, axle bed and multiple extrusome.Described extrusome is made up of expansion screw and stretching block.Wherein: rotary steering
Ring set is contained in described flexible centering body and matched in clearance therebetween.The sphere end of the expansion screw in each extrusome is worn respectively
Cross the pilot hole being positioned on described rotary steering ring circumferential surface and load the chute on flexible centering body circumferential surface.Described
Flexible centering body is fixed with worm screw centrally through bearing.Worm gear/gear arrangement is arranged on described flexible centering body by bearing
Disc surfaces；Turbine body in described worm gear/gear arrangement is engaged with worm screw, the gear of described worm gear/gear arrangement
Body engages with the ring gear section being positioned at rotary steering ring end face, makes to produce between described worm gear/gear arrangement and ring gear section
Relatively rotate.The quantity of the external peripheral surface pilot hole of described rotary steering ring, the number of circumferential surface chute of flexible centering body
Measure identical with the quantity of extrusome.
Slewing limit block is had respectively in the both sides of described worm gear/gear arrangement.Both ends of the surface at described rotary steering ring
It is evenly equipped with four axial stops respectively.
The external diameter of described rotary steering ring less than cylinder or the internal diameter 40～100mm of housing, internal diameter than external diameter little 50～
100mm.External peripheral surface at described rotary steering ring is evenly distributed with the pilot hole of multiple radial direction；Guiding is had in this pilot hole
Set.The external diameter of this fairlead and described pilot hole tight fit, the magnitude of interference is 0.015～0.03mm；The internal diameter of this fairlead with stretch
The crest clearance of compression screw arbor coordinates.An end face at described rotary steering ring installs ring gear section.At described rotary steering ring
Having to be provided with on the end face of ring gear section has for installing back the screw turning limited block and axial stop, at described rotary steering ring
Another end face have the screw for installing axial stop.
The screw for installing bearing block is had at the center of described flexible centering body.Circumference table at described flexible centering body
Face is evenly equipped with multiple chute；The length direction of this chute is circumferential consistent with described flexible centering body；The basal surface of this chute is
Cambered surface, and the groove depth of this one end is h, and the groove depth of the other end is h1, h1=h+l；L is the stroke of expansion screw.Described
The cross section of sliding chute groove uses trapezoid groove structure.It is circular hole in the end that the described chute degree of depth is h one end, the hole of this circular hole
Footpath is slightly larger than the diameter of the bulb of expansion screw termination, in order to load the bulb of this expansion screw.
Described disjunctor/gear mass is made up of gear mass, bearing socket and worm wheel body, wherein the internal diameter of bearing socket and bearing
External diameter identical.This bearing socket external peripheral surface has the gear mass in sector of radially protruding；This gear mass arc-shaped
End face be the flank of tooth coordinated with ring gear section.This bearing socket external peripheral surface also has the snail in sector of radially protruding
Wheel body；The end face of the arc-shaped of this worm wheel body is the flank of tooth coordinated with worm screw.Described gear mass and symmetrical being distributed in of worm wheel body
The circumferential surface of bearing socket.
Described ring gear Duan Weiyi section torus.The internal diameter of this ring gear section and external diameter all with rotary steering ring internal diameter and outer
Footpath is identical.
Described extrusome has multiple.In each extrusome, the outer surface of stretching block and inner surface are cambered surface, expansion screw
One end be threadedly secured to the geometric center of stretching block inner surface, and be perpendicular to this inner surface.Described expansion screw another
Termination, one end is bulb.Described stretching block uses aluminum or aluminum alloy or copper or copper alloy to make；Described expansion screw uses carbon steel
Or steel alloy makes.The bulb surface of described expansion screw needs quenched process.
The present invention at work, all of stretching block can simultaneous retractable, and the centre of location is the most constant, it is possible to realize from
Dynamic centering.The worm screw that the present invention is arranged on flexible centering body by rotating handwheel to drive rotates driving and is contained on flexible centering body
Disjunctor worm-gear toothing rotate, make the ring gear section that is arranged on rotary steering body rotate under the effect of disjunctor worm-gear toothing；
Ring gear section be rotated guide way rotate while, retract bolt dovetail groove in flexible centering body moves, at ladder
Make retract bolt stretch out under the effect at shape trench bottom and top and shrink, thus driving the stretching block being contained on retract bolt to cylinder
Body carries out stretching and unclamps；Due to all of retract bolt be all simultaneous retractable and stretching speed is identical, be all along outer ring body
Pilot hole is carried out, and therefore, telescoping center is constant, thus determines the center of stretching rear cylinder body or housing, is also achieved that
Become round while cylinder or housing stretching.
The key technology of the present invention is:
1, inside and outside ring body rotating mechanism in relative rotation is realized；
2, the telescoping mechanism that retract bolt and stretching block are flexible is realized.
In the invention, when rotating handwheel, handwheel drives the worm screw being connected on flexible centering body by bearing block to turn
Dynamic, thus drive and be connected to the worm gear wheel on disjunctor worm-gear toothing wheel body by axle bed, and gear parts drive connection is rotating
Ring gear section on guide ring rotates, and so, makes rotary steering ring and flexible centering body produce relative rotation thus promotes flexible
Screw rod moves in the chute of flexible centering body, under the bottom of chute or the effect at top, expansion screw protruding or to
Interior retraction, its protruding or inside retraction is all to stretch out along the fairlead being contained in rotary steering ring or retract, because of
This its center is exactly the centre of gyration of rotary steering ring.During expansion screw drives stretching flexible soon, stretching out or
During the diverse location retracted, the concentric circular of the periphery formation different size size that all stretchings are fast, its center of circle is all to rotate to lead
To the centre of gyration of ring, namely when its stretching workpiece, the center of circle is also the centre of gyration of rotary steering ring, here it is this invention
There is the reason of self-centering function.Owing to the present invention is during stretching, all of stretching block is by retract bolt simultaneously
Extend and retract, and be always the same center of circle during flexible, realize cylinder or housing step up while the center of circle constant,
Simultaneously by workpiece school circle during stretching.Compared with other type internal stay tool, present configuration is compact, easy to operate, efficiency
Height, labor intensity is little, has application value widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of self-centering internal stay tool；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the structural representation of disjunctor worm-gear toothing；
Fig. 4 is the A-A sectional view in Fig. 3；
Fig. 5 is the structural representation of rotary steering ring；
Fig. 6 is the structural representation of flexible centering body, and wherein: Fig. 6 a is front view, Fig. 6 b is the A direction view in Fig. 6 a,
Fig. 6 c is the B-B sectional view in Fig. 6 b, and Fig. 6 d is the partial schematic diagram of chute in Fig. 6 a.In figure:
1. rotary steering ring；2. stretch centering body；3. ring gear section；4. worm gear/gear arrangement；5. slewing limit block；
6. axial stop；7. worm screw；8. bearing block；9. fairlead；10. expansion screw；11. stretching blocks；12. handwheels；13. axle beds；14.
Bearing；15. gear masses；16. bearing sockets；17. worm wheel bodies.
Detailed description of the invention
The present embodiment is a kind of self centering internal stay tool, it is possible to thin-wall barrel, cylinder section class part and housing series products
During processing, welding, it is capable of it automatically become round during stretching.
The present embodiment includes rotary steering ring 1, flexible centering body 2, ring gear section 3, disjunctor worm-gear toothing wheel body 4, revolution limit
Position block 5, axial stop 6, worm screw 7, bearing block 8, fairlead 9, handwheel 12, axle bed 13, bearing 14 and multiple extrusome.Described
Extrusome is made up of expansion screw 10 and stretching block 11.
Wherein: rotary steering ring 1 is sleeved on described flexible centering body 2 and matched in clearance therebetween.In each extrusome
The sphere end of expansion screw be each passed through the pilot hole being positioned on described rotary steering ring circumferential surface and load flexible centering body
In chute on circumferential surface.It is fixed with worm screw 7 centrally through bearing at described flexible centering body；One end of this worm screw is provided with
Handwheel 12.Disc surfaces at described flexible centering body 2 is fixed with axle bed 13, and worm gear/gear arrangement 4 is set with by bearing 14
On described axle bed 13, and make the turbine body 17 in described worm gear/gear arrangement be engaged with worm screw, make described worm gear/gear
The gear mass 15 of assembly engages with the ring gear section 4 being positioned at rotary steering ring 1 end face, make described worm gear/gear arrangement with
Produce relative rotation between ring gear section.There is slewing limit block 5 respectively in the both sides of described worm gear/gear arrangement, be used for limiting
Fixed angle in relative rotation between described worm gear/gear arrangement and ring gear section.Both ends of the surface at described rotary steering ring 1 are divided
It is not evenly equipped with four axial stops 6, for preventing the axial float of this rotary steering ring and flexible centering body 2.
Described rotary steering ring 1 is ring-type, uses carbon steel to make.The external diameter of this rotary steering ring is less than cylinder or housing
Internal diameter 40～100mm, internal diameter are than external diameter little 50～100mm.External peripheral surface at described rotary steering ring is evenly distributed with many
The pilot hole of individual radial direction；The quantity of this pilot hole determines according to the diameter of cylinder or housing, with satisfied support middle cylinder body or housing
Uniform stressed；Fairlead 9 is had in this pilot hole.The external diameter of this fairlead and described pilot hole tight fit, the magnitude of interference is 0.015
～0.03mm；The internal diameter of this fairlead 9 coordinates with the crest clearance of expansion screw 10.An end at described rotary steering ring 1
Ring gear section 3 is installed in face.Have to be provided with on the end face of ring gear section to have at described rotary steering ring 1 and turn limited block for installing back
5 and the screw of axial stop 6, another end face at described rotary steering ring 1 has the screw for installing axial stop 6.
Described flexible centering body 2 is also discoid, uses carbon steel to make.Have at the center of described flexible centering body 2 for
The screw of bearing block 8 is installed.Circumferential surface at described flexible centering body is evenly equipped with multiple chute；The length direction of this chute with
The circumference of described flexible centering body is consistent；The basal surface of this chute is cambered surface, and the groove depth of this one end is h, the other end
Groove depth is h1, h1=h+l；L is the stroke of expansion screw.The cross section of described chute groove uses trapezoid groove structure.Institute
Stating the end that the chute degree of depth is h one end is circular hole, and the aperture of this circular hole is slightly larger than the diameter of the bulb of expansion screw termination, with
It is easy to load the bulb of this expansion screw.End face at described flexible centering body is machined with lightening hole.
Described disjunctor/gear mass 4 is made up of gear mass 15, bearing socket 16 and worm wheel body 17, wherein bearing socket 16
Internal diameter is identical with the external diameter of bearing 14.This bearing socket 16 external peripheral surface has the gear mass 15 of radially protruding；This gear
Body 15 is in sector, and the end face of its arc-shaped is the flank of tooth coordinated with ring gear section.On this bearing socket 16 external peripheral surface also
There is the worm wheel body 17 of radially protruding；This worm wheel body 15 is also in sector, and the end face of its arc-shaped is the flank of tooth coordinated with worm screw.Described
Gear mass 15 and the circumferential surface being distributed in bearing socket 16 of worm wheel body 17 symmetry.
Described ring gear section 3 is one section of torus.The internal diameter of this ring gear section 3 and external diameter all with rotary steering ring internal diameter and
External diameter is identical.
Described extrusome has multiple.In each extrusome, outer surface and the inner surface of stretching block 11 are cambered surface, flexible spiral shell
One end of bar 10 is threadedly secured to the geometric center of stretching block 11 inner surface, and is perpendicular to this inner surface.Described flexible spiral shell
The other end termination of bar 10 is bulb.Described stretching block 11 uses aluminum or aluminum alloy or copper or copper alloy to make；Described flexible spiral shell
Bar 10 uses carbon steel or steel alloy to make.The bulb surface of described expansion screw needs quenched process.
The quantity of the external peripheral surface pilot hole of described rotary steering ring, the quantity of circumferential surface chute of flexible centering body
Identical with the quantity of extrusome.
The two ends of described worm screw 7 are Step Shaft, middle for worm tooth shape structure, use steel alloy to make, and quenched place
Reason.The cubic spindle nose installing handwheel is had at the center of termination, described worm screw 7 one end.
Limited block 5 is flat board sector structure, uses carbon steel to make；Axial stop 6 is flat board square structure, uses material carbon steel
Make.
Claims (7)
1. a self centering internal stay tool, it is characterised in that include rotary steering ring, flexible centering body, ring gear section, disjunctor
Worm-gear toothing wheel body, slewing limit block, axial stop, worm screw, axle bed and multiple extrusome；Described extrusome by expansion screw and
Stretching block forms；Wherein: rotary steering ring set is contained in described flexible centering body and matched in clearance therebetween；In each extrusome
The sphere end of expansion screw be each passed through the pilot hole being positioned on described rotary steering ring circumferential surface and load flexible centering body
In chute on circumferential surface；It is fixed with worm screw centrally through bearing at described flexible centering body；Worm gear/gear arrangement passes through
Bearing is arranged on the disc surfaces of described flexible centering body；Turbine body in described worm gear/gear arrangement is engaged with worm screw, institute
The gear mass stating worm gear/gear arrangement engages with the ring gear section being positioned at rotary steering ring end face, makes described worm gear/gear train
Produce relative rotation between zoarium and ring gear section；The quantity of the external peripheral surface pilot hole of described rotary steering ring, flexible fixed
The quantity of the circumferential surface chute of heart body is identical with the quantity of extrusome.
Self centering internal stay the most as claimed in claim 1 has, it is characterised in that in the both sides of described worm gear/gear arrangement
There is slewing limit block respectively；Both ends of the surface at described rotary steering ring are evenly equipped with four axial stops respectively.
Self centering internal stay the most as claimed in claim 1 has, it is characterised in that the external diameter of described rotary steering ring is less than cylinder
Or the internal diameter 40～100mm of housing, internal diameter are than external diameter little 50～100mm；Uniform at the external peripheral surface of described rotary steering ring
The pilot hole of multiple radial direction is distributed；Fairlead is had in this pilot hole；The external diameter of this fairlead and described pilot hole tight fit, mistake
The amount of being full of is 0.015～0.03mm；The internal diameter of this fairlead coordinates with the crest clearance of expansion screw；At described rotary steering ring
One end face installs ring gear section；Having to be provided with on the end face of ring gear section at described rotary steering ring has for installing back a turn limit
Position block and the screw of axial stop, another end face at described rotary steering ring has the screw for installing axial stop.
Self centering internal stay the most as claimed in claim 1 have, it is characterised in that have at the center of described flexible centering body for
The screw of bearing block is installed；Circumferential surface at described flexible centering body is evenly equipped with multiple chute；The length direction of this chute with
The circumference of described flexible centering body is consistent；The basal surface of this chute is cambered surface, and the groove depth of this one end is h, the other end
Groove depth is h1, h1=h+l；L is the stroke of expansion screw；The cross section of described chute groove uses trapezoid groove structure；Institute
Stating the end that the chute degree of depth is h one end is circular hole, and the aperture of this circular hole is slightly larger than the diameter of the bulb of expansion screw termination, with
It is easy to load the bulb of this expansion screw.
Self centering internal stay the most as claimed in claim 1 has, it is characterised in that described disjunctor/gear mass is by gear mass, bearing
Hole seat and worm wheel body composition, wherein the internal diameter of bearing socket and the external diameter of bearing are identical；On this bearing socket external peripheral surface
There is the gear mass in sector of radially protruding；The end face of this gear mass arc-shaped is the flank of tooth coordinated with ring gear section；At this axle
Also the worm wheel body in sector of radially protruding is had on bearing bore seat external peripheral surface；The end face of the arc-shaped of this worm wheel body is and worm screw
The flank of tooth coordinated；The circumferential surface being distributed in bearing socket that described gear mass is symmetrical with worm wheel body.
Self centering internal stay the most as claimed in claim 1 has, it is characterised in that described ring gear Duan Weiyi section torus；Should
The internal diameter of ring gear section is all identical with rotary steering ring internal diameter and external diameter with external diameter.
Self centering internal stay the most as claimed in claim 1 has, it is characterised in that described extrusome has multiple；At each extrusome
In, the outer surface of stretching block and inner surface are cambered surface, and one end of expansion screw is threadedly secured to stretching block inner surface
Geometric center, and it is perpendicular to this inner surface；The other end termination of described expansion screw is bulb；Described stretching block uses aluminum or aluminum
Alloy or copper or copper alloy are made；Described expansion screw uses carbon steel or steel alloy to make；The bulb surface of described expansion screw
Need quenched process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749071.0A CN106271354B (en) | 2016-08-29 | 2016-08-29 | A kind of self centering inner support tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749071.0A CN106271354B (en) | 2016-08-29 | 2016-08-29 | A kind of self centering inner support tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106271354A true CN106271354A (en) | 2017-01-04 |
| CN106271354B CN106271354B (en) | 2018-06-29 |
Family
ID=57676289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610749071.0A Active CN106271354B (en) | 2016-08-29 | 2016-08-29 | A kind of self centering inner support tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106271354B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128538A (en) * | 2018-09-07 | 2019-01-04 | 重庆工业职业技术学院 | A kind of aluminium alloy magazine weld industry device and control method |
| CN110293329A (en) * | 2019-06-29 | 2019-10-01 | 中国二十二冶集团有限公司 | The construction method and its specific purpose tool of gear wheel installation and adjustment |
| CN110369945A (en) * | 2019-07-24 | 2019-10-25 | 杭州芷盛网络科技有限公司 | Based on the building pipe centring means for moving synchronously principle |
| CN113231721A (en) * | 2021-07-09 | 2021-08-10 | 南通泰胜蓝岛海洋工程有限公司 | Non-back-gouging welding process for fan tower shell ring |
| CN113399828A (en) * | 2021-06-21 | 2021-09-17 | 江苏沪云激光设备有限公司 | Laser welding machine for processing reducing pipe |
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| JPH08197246A (en) * | 1995-01-25 | 1996-08-06 | Chiyoda Corp | Steel pipe automatic welding equipment |
| CN201931245U (en) * | 2010-12-28 | 2011-08-17 | 张春满 | Internal aligning device for thin pipe |
| CN205393915U (en) * | 2016-03-14 | 2016-07-27 | 东方电气集团东方锅炉股份有限公司 | Deformation support frock is prevented to major diameter thin wall barrel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3283115A (en) * | 1964-12-31 | 1966-11-01 | Exxon Research Engineering Co | Strong-back clamping system for holding pipe joints during welding |
| US5285947A (en) * | 1992-09-14 | 1994-02-15 | Cogsdill Tool Products, Inc. | Welding fixture |
| JPH08197246A (en) * | 1995-01-25 | 1996-08-06 | Chiyoda Corp | Steel pipe automatic welding equipment |
| CN201931245U (en) * | 2010-12-28 | 2011-08-17 | 张春满 | Internal aligning device for thin pipe |
| CN205393915U (en) * | 2016-03-14 | 2016-07-27 | 东方电气集团东方锅炉股份有限公司 | Deformation support frock is prevented to major diameter thin wall barrel |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128538A (en) * | 2018-09-07 | 2019-01-04 | 重庆工业职业技术学院 | A kind of aluminium alloy magazine weld industry device and control method |
| CN110293329A (en) * | 2019-06-29 | 2019-10-01 | 中国二十二冶集团有限公司 | The construction method and its specific purpose tool of gear wheel installation and adjustment |
| CN110369945A (en) * | 2019-07-24 | 2019-10-25 | 杭州芷盛网络科技有限公司 | Based on the building pipe centring means for moving synchronously principle |
| CN110369945B (en) * | 2019-07-24 | 2020-09-04 | 杭州芷盛网络科技有限公司 | Centering device for building pipeline based on synchronous motion principle |
| CN113399828A (en) * | 2021-06-21 | 2021-09-17 | 江苏沪云激光设备有限公司 | Laser welding machine for processing reducing pipe |
| CN113231721A (en) * | 2021-07-09 | 2021-08-10 | 南通泰胜蓝岛海洋工程有限公司 | Non-back-gouging welding process for fan tower shell ring |
| CN113231721B (en) * | 2021-07-09 | 2021-11-26 | 南通泰胜蓝岛海洋工程有限公司 | Non-back-gouging welding process for fan tower shell ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106271354B (en) | 2018-06-29 |
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