CN106425832B - A kind of liquid expanding endoporus precision grinding tool - Google Patents
A kind of liquid expanding endoporus precision grinding tool Download PDFInfo
- Publication number
- CN106425832B CN106425832B CN201610888861.7A CN201610888861A CN106425832B CN 106425832 B CN106425832 B CN 106425832B CN 201610888861 A CN201610888861 A CN 201610888861A CN 106425832 B CN106425832 B CN 106425832B
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- CN
- China
- Prior art keywords
- plunger
- screw rod
- endoporus
- nut
- grinding
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- 239000007788 liquid Substances 0.000 title claims abstract description 18
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 210000004534 cecum Anatomy 0.000 claims description 2
- 229910001018 Cast iron Inorganic materials 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/27—Work carriers
-
- 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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/02—Lapping machines or devices; Accessories designed for working surfaces of revolution
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention belongs to precision processing technology fields, and the present invention provides a kind of liquid expanding endoporus precision grinding tools, including plunger nut, two sets of O-ring seals, two sets of y-type seal rings, expansion sleeve, grinding axle sleeve, plunger screw rod, plug cock.The grinding tool grinds the driving element of the radial deformation of axle sleeve using the hydraulic buckling mandrel of thin-walled as cylinder-shaped thin wall, reduce the distance between plunger screw rod and plunger nut by turning plunger screw rod, the indoor hydraulic oil pressure of expanding arbor chamber is set to increase, cause thin-walled elastic expansion set that radial deformation occurs, and then Elastic Cylindrical grinding axle sleeve is driven to be radially expanded, to realize the precise finiss with cydariform trend endoporus.The grinding tool can be operated on lathe, have many advantages, such as that simple in structure, grinding axle sleeve is replaceable, easy to operate, endoporus grinding precision is high and does not generate shape of a saddle error, the grinding demand of the endoporus of superhigh precision can be met, there is good market application prospect and promotional value.
Description
Technical field
The invention belongs to precision processing technology fields, are related to a kind of liquid expanding endoporus precision grinding tool.
Background technology
Attrition process is a kind of Ultra-precision Turning technique, is mainly used for processing plane, cylindrical surface and spherical surface etc. by simple several
The Ultra-precision Turning for the face shape what element is constituted.Currently, the flatness of plane lapping can generally reach 0.2~0.5 μm；Cylindrical surface
The circularity of grinding can generally reach 0.2~0.5 μm, and cylindricity can generally reach 0.5~1 μm.Endoporus grinding needs outer diameter smaller
It is realized in the elastic shaft sleeve that inner hole of workpiece diameter and outer diameter can finely tune in a certain range.Traditional endoporus grinding tool
Moving toward one another for single conical surface or double cone face axis and hole is mostly used, grinding axle sleeve is realized using the radial component of wedging movement
Be radially expanded.The sectional dimension of this grinding axle sleeve is variation, causes the rigidity for grinding each section of axle sleeve inconsistent, expansion
It is difficult to ensure that the cylindricity of grinding axle sleeve outer diameter when deformation；In addition annular sleeve one side wall is fully disconnected into c-type, and this structure is swollen
It is difficult to ensure that the circularity of grinding axle sleeve outer diameter after bulging deformation.Therefore, current grinding tool is unsatisfactory for the grinding of ultraprecise endoporus
It is required that.
The microstructure form of endoporus mainly has cylindrical, cone, the shape of a saddle and cydariform etc. several.From the use of endoporus
It is said in angle, the high precision inner-pore on part is mainly used for the benchmark processed or tested, therefore, and under certain cylindricity, cylinder
The endoporus of shape and cydariform is easier to obtain high installation and positioning accuracy, and the positioning accuracy of opposite cone and shape of a saddle endoporus is just
It is poor.It is easy to generate conical error and shape of a saddle error using the endoporus that traditional endoporus grinding tool is processed, same
Under cylindricity, such error reduces the installation positioning accuracy of endoporus.
Invention content
To solve the problems, such as existing endoporus grinding technique, the present invention provides a kind of liquid expanding endoporus precise finiss
Tooling, including plunger nut, two sets of O-ring seals, two sets of y-type seal rings, expansion sleeve, grinding axle sleeve, plunger screw rod, plug cock；
Plunger nut one end is equipped with centre bore, and the other end is equipped with threaded hole；The outer diameter of the plunger section of plunger nut is more than it
The outer diameter of chuck gripping section forms an axis platform between two sections；The cylindricity of plunger face is not more than 5 μm, with expansion sleeve endoporus
Diameter difference is less than 5 μm, and surface roughness is not more than Ra0.4；The radial direction that O-ring seal is installed on the plunger section of plunger nut is U-shaped
In annular groove, y-type seal ring is installed on plunger nut in the end face annular groove of threaded hole, prevents hydraulic fluid leak；
Expansion sleeve generally cylindrical shape, wall thickness are 0.8~2mm, are coated on the outside of plunger nut and plunger screw rod；Expansion
It covers one end and is equipped with an axis platform, axially position is realized in the axis platform cooperation with plunger nut；
Axle sleeve generally cylindrical shape is ground, is coated at the outer middle side part of expansion sleeve, 2~5mm of wall thickness, both ends are alternately equipped with
Slot that is uniformly distributed and not turning off, the cecum of slot are the through-hole that radially-arranged diameter is more than well width；
Plunger screw rod end is connect with plunger nut thread, forms threaded hole chamber between the two；Plunger screw rod bar portion, column
Plug nut bottom and expansion sleeve surround expanding arbor chamber, are reduced between plunger screw rod and plunger nut by turning plunger screw rod
Distance, so that the indoor hydraulic oil pressure of expanding arbor chamber is increased, cause thin-walled elastic expansion set that radial deformation occurs, and then drive
Dynamic Elastic Cylindrical grinding axle sleeve is radially expanded, to realize the precise finiss with cydariform trend endoporus；It is set on plunger screw rod
The oil duct for having connection screw thread hole chamber and expanding arbor chamber, when the relative position of plunger screw rod and plunger nut changes
When, the indoor hydraulic oil energy free flow of two chambers；The radial direction that another O-ring seal is installed on the plunger section of plunger screw rod is U-shaped
In annular groove, another y-type seal ring is installed on plunger screw rod in the end face annular groove of threaded hole, prevents hydraulic fluid leak；Column
The one end for filling in not inflated set covering on screw rod is equipped with an oil outlet, and plug cock is for sealing oil outlet；Expanding arbor chamber with go out
Oil duct also is provided between oilhole, the outflow of chamber interior air and extra hydraulic oil, also lets out as hydraulic oil when for refueling
Repairing channel after leakage.
The chuck gripping section of the plunger nut is non-polished surface, a through-hole is which is provided with, for screwing plunger spiral shell
Apply opposing torque when bar.
Above-mentioned expansion sleeve is using the material of 40Cr or similar performance Jing Guo modulation treatment, and the surface roughness of endoporus is not
More than Ra0.4, cylindricity is not more than 5 μm.
Above-mentioned grinding axle sleeve uses ductile cast iron material, outer diameter to be equal to inner hole of workpiece size and twice of abrasive particles
The sum of size.
Above-mentioned plunger screw rod has the shaft part that outer diameter is less than plunger face diameter far from screw thread one end, set on the shaft part there are two
Parallel plane, for implementing clamping torsion.
The beneficial effects of the present invention are invented a kind of liquid expanding endoporus precision grinding tool, for inner bore of part
Precise finiss.The grinding tool grinds the drive of the radial deformation of axle sleeve using the hydraulic buckling mandrel of thin-walled as cylinder-shaped thin wall
Dynamic element reduces the distance between plunger screw rod and plunger nut by turning plunger screw rod, makes the indoor liquid of expanding arbor chamber
Pressure oil pressure increases, and causes thin-walled elastic expansion set that radial deformation occurs, and then drives Elastic Cylindrical grinding axle sleeve radially swollen
It is swollen, to realize the precise finiss with cydariform trend endoporus.Liquid expanding endoporus precision grinding tool provided by the invention can
It is operated on lathe, with simple in structure, grinding axle sleeve is replaceable, easy to operate, endoporus grinding precision is high and does not generate
The advantages that shape of a saddle error, can meet the grinding demand of the endoporus of superhigh precision, have good market application prospect and promote
Value.
Description of the drawings
Fig. 1 liquid expanding endoporus precision grinding tools.
Fig. 2 grind axle sleeve.
Fig. 3 plunger nuts.
Fig. 4 plunger screw rods.
In figure：1 chuck；2 plunger nuts；3O type sealing rings；4Y type sealing rings；5 expansion sleeves；6 grinding axle sleeves；7 workpiece；8
Plunger screw rod；9 plug cocks；10 is top；11 threaded hole chambers；12 expanding arbor chambers.
Specific implementation mode
One, plunger nut and plunger screw rod are finished
According to the dimensioned column of the standard component O-ring seal 3 and y-type seal ring 4 of the aperture of workpiece to be ground and selection
The annular groove in U-type groove and end face above plug face, plunger nut 2 and plunger screw rod 8 and the length for reasonably selecting plunger screw rod 8.
Two, expansion sleeve is finished
The endoporus of finishing expansion sleeve 5 is to design size first；Then the plunger nut 2 for packaging sealing ring is packed into finishing
In the expansion sleeve 5 of the complete endoporus of work, and place vertically；It will after the moderately viscous antiwear hydraulic oil of 46# or 68# of addition appropriate amount agent
Plunger screw rod 8 screws in the distance of half or so in plunger nut 5 and is flowed out from oil outlet with hydraulic oil, illustrates hydraulic oil at this time
Fill with the chamber of built-up mandrel；Then 9 screw of plug cock screw-in oil outlet is enclosed in hydraulic oil to the chamber of expanding arbor
In；Screw in the pressure that plunger screw rod 8 makes the chamber of expanding arbor generate 1~2Mpa；The outer diameter of expansion sleeve 5 is then finished to setting
Count size.
Three, finishing nodular cast iron grinds axle sleeve
First then the endoporus of finishing nodular cast iron grinding axle sleeve 6 punches, slots, chamfering to design size；Then it revolves
Go out plunger screw rod 8 to initial position, the pressure of hydraulic oil in expanding arbor chamber is made to be reduced to 0；Grinding shaft is put on since both ends
The alternating slot that is machined with uniformly distributed 1mm wide and does not turn off, the length of slot is about 95% or so of grinding shaft entire length, slot it is blind
End is machined with the through-hole that radially-arranged diameter is about 4mm；The quantity of grinding axle sleeve fluting is generally 8~12；The slot is being ground
Grinding agent and abrasive dust can be stored during mill, the structure of one end open also allows for excessive grinding agent and abrasive dust discharge；It will grind
Screwing plunger screw rod 8 behind position among the loading expanding arbor of mill axle sleeve 6 makes grinding axle sleeve swelling；Then smart car grinds axle sleeve outer diameter
And stay mill amount 0.1mm；The outer diameter of finally fine grinding grinding axle sleeve makes its value be equal to or slightly less than inner hole of workpiece size and twice of grinding
The sum of agent granular size, and the outer diameter cylindrical degree controlled under grinding axle sleeve working condition is less than 2 μm.
Four, the precise finiss of inner hole of workpiece
Workpiece 7 is sleeved on liquid expanding endoporus precision grinding tool provided by the invention, 1 He of chuck of lathe is then utilized
Top 10 step up grinding tool, while using the driving of lathe chuck 1 as grinding 6 rotary motion of axle sleeve.It is ground what is prepared
Grinding agent is applied to grinding shaft and puts on, and manually or automatically controls uniform speed rotation and reciprocating translatory of the workpiece 7 on grinding shaft set.Card
The direction of rotation of disk 1 it is identical as the rotation direction of 2 screw thread of plunger nut, make plunger screw rod 8 and plunger nut 2 have the tendency that screwing.
By changing plunger screw rod 8 at a distance from plunger nut 2, the pressure of expanding arbor chamber hydraulic oil is controlled, and then control grinding
The gap of axle sleeve 6 and 7 endoporus of workpiece.With the progress of grinding, 7 endoporus of workpiece increases to be caused to grind with the abrasion of grinding axle sleeve 6
The gap of axle sleeve and inner hole of workpiece is excessive, so that the indoor hydraulic oil pressure of chamber is increased by tightening plunger screw rod 8, to compensate grinding
Gap between 7 endoporus of axle sleeve 6 and workpiece.
Claims (8)
1. a kind of liquid expanding endoporus precision grinding tool, which is characterized in that including plunger nut (2), O-ring seal, the sealing of Y types
Circle, expansion sleeve (5), grinding axle sleeve (6), plunger screw rod (8), plug cock (9)；
Plunger nut (2) one end is equipped with centre bore, and the other end is equipped with threaded hole；The outer diameter of the plunger section of plunger nut blocks more than it
The outer diameter of disk gripping section forms an axis platform between two sections；O-ring seal is installed on the radial U of the plunger section of plunger nut (2)
In type ring slot, y-type seal ring is installed on plunger nut (2) in the end face annular groove of threaded hole, prevents hydraulic fluid leak；
Expansion sleeve (5) generally cylindrical shape, wall thickness are 0.8~2mm, are coated at plunger nut (2) and plunger screw rod (8) outside
Side；Expansion sleeve (5) one end is equipped with an axis platform, and axially position is realized in the axis platform cooperation with plunger nut (2)；
Axle sleeve (6) generally cylindrical shape is ground, expansion sleeve (5) outer middle side part, 2~5mm of wall thickness are coated at, both ends are alternately set
It is the through-hole that radially-arranged diameter is more than well width to have slot that is uniformly distributed and not turning off, the cecum of slot；
Plunger screw rod (8) end is threadedly coupled with plunger nut (2), forms threaded hole chamber (11) between the two；Plunger screw rod
(8) bar portion, plunger nut bottom and expansion sleeve surround expanding arbor chamber (12), reduce plunger screw rod by turning plunger screw rod
The distance between plunger nut makes the indoor hydraulic oil pressure of expanding arbor chamber increase, and thin-walled elastic expansion set is caused to occur
Radial deformation, and then Elastic Cylindrical grinding axle sleeve is driven to be radially expanded, to realize that the precision with cydariform trend endoporus is ground
Mill；Plunger screw rod (8) is equipped with the oil duct of connection screw thread hole chamber (11) and expanding arbor chamber (12), when plunger screw rod and column
When the relative position of plug nut changes, the indoor hydraulic oil energy free flow of two chambers；Another O-ring seal is installed on column
In the U-shaped annular groove of radial direction for filling in the plunger section of screw rod (8), another y-type seal ring is installed on plunger screw rod (8) close to threaded hole
In the annular groove of end face, hydraulic fluid leak is prevented；One end of not inflated set (5) covering is equipped with an oil outlet, oil on plunger screw rod (8)
Plug (9) is for sealing oil outlet；Expanding arbor chamber (12) also is provided with oil duct between oil outlet, chamber interior when for refueling
The outflow of air and extra hydraulic oil, also as the repairing channel after hydraulic fluid leak.
2. liquid expanding endoporus precision grinding tool according to claim 1, which is characterized in that the non-finishing of plunger nut
Face is equipped with a through-hole, applies opposing torque when for screwing plunger screw rod.
3. liquid expanding endoporus precision grinding tool according to claim 1 or 2, which is characterized in that expansion sleeve (5) endoporus
Surface roughness is not more than Ra0.4, and cylindricity is not more than 5 μm.
4. liquid expanding endoporus precision grinding tool according to claim 1 or 2, which is characterized in that grinding axle sleeve uses ball
Black cast iron materials, outer diameter are equal to the sum of inner hole of workpiece size and twice of abrasive particles size.
5. liquid expanding endoporus precision grinding tool according to claim 3, which is characterized in that grinding axle sleeve is cast using spheroidal graphite
Iron material, outer diameter are equal to the sum of inner hole of workpiece size and twice of abrasive particles size.
6. the liquid expanding endoporus precision grinding tool according to claims 1 or 2 or 5, which is characterized in that plunger screw rod (8)
There is the shaft part that outer diameter is less than plunger face diameter far from screw thread one end, is set on the shaft part there are two parallel plane, for implementing folder
Hold torsion.
7. liquid expanding endoporus precision grinding tool according to claim 3, which is characterized in that plunger screw rod (8) is far from spiral shell
There is the shaft part that outer diameter is less than plunger face diameter in line one end, is set on the shaft part there are two parallel plane, for implementing clamping torsion.
8. liquid expanding endoporus precision grinding tool according to claim 4, which is characterized in that plunger screw rod (8) is far from spiral shell
There is the shaft part that outer diameter is less than plunger face diameter in line one end, is set on the shaft part there are two parallel plane, for implementing clamping torsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610888861.7A CN106425832B (en) | 2016-10-12 | 2016-10-12 | A kind of liquid expanding endoporus precision grinding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610888861.7A CN106425832B (en) | 2016-10-12 | 2016-10-12 | A kind of liquid expanding endoporus precision grinding tool |
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| CN106425832A CN106425832A (en) | 2017-02-22 |
| CN106425832B true CN106425832B (en) | 2018-08-07 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903539B (en) * | 2017-04-12 | 2023-06-27 | 沈机集团昆明机床股份有限公司 | Measuring mandrel for positioning crankshaft hole of engine cylinder body |
| CN109571233B (en) * | 2019-01-23 | 2023-08-11 | 中国科学院光电技术研究所 | High-precision excircle grinding tool for shaft parts |
| CN111906331A (en) * | 2020-07-07 | 2020-11-10 | 哈尔滨工业大学 | Combined expansion mandrel |
| CN112605749B (en) * | 2020-11-16 | 2023-07-21 | 中国航发西安动力控制科技有限公司 | Quantitative adjusting type inner hole grinding device capable of synchronously expanding at two ends |
| CN113245929A (en) * | 2021-06-01 | 2021-08-13 | 大连理工大学 | Elastic grinding shaft sleeve with radial deformation and symmetric distribution |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB457503A (en) * | 1935-06-15 | 1936-11-30 | Hamilton Gordon | Improvements in lapping tools |
| US4677792A (en) * | 1985-04-04 | 1987-07-07 | Montanwerke Walter Gmbh | Clamping or chucking system for a grinding wheel or disk |
| CN201702464U (en) * | 2010-05-28 | 2011-01-12 | 王洪祥 | Precision hydraulic expansion mandrel |
| CN201848556U (en) * | 2010-10-13 | 2011-06-01 | 天津泵业机械集团有限公司 | Centering and expanding mandrel for machining excircle of bushing of screw pump |
| CN202964379U (en) * | 2012-11-21 | 2013-06-05 | 无锡市航鹄科技有限公司 | Machining and positioning jig for grinding inner holes |
| CN103341817A (en) * | 2013-06-21 | 2013-10-09 | 中国科学院上海技术物理研究所 | Inner hole grinding mandril with freely-adjusted outer diameter and manufacturing method thereof |
| CN203751800U (en) * | 2014-04-10 | 2014-08-06 | 江西铜业股份有限公司 | Machining device directly clamping threaded surface without damaging thread |
| CN204486936U (en) * | 2014-12-23 | 2015-07-22 | 内江神舟机电设备有限公司 | Liquid is swollen gear shaving technology equipment |
| CN204975392U (en) * | 2015-09-02 | 2016-01-20 | 南方风机股份有限公司 | Anchor clamps are moulded to dedicated liquid of thin wall axle sleeve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01222869A (en) * | 1988-02-29 | 1989-09-06 | Toshiba Corp | Polishing tool |
-
2016
- 2016-10-12 CN CN201610888861.7A patent/CN106425832B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB457503A (en) * | 1935-06-15 | 1936-11-30 | Hamilton Gordon | Improvements in lapping tools |
| US4677792A (en) * | 1985-04-04 | 1987-07-07 | Montanwerke Walter Gmbh | Clamping or chucking system for a grinding wheel or disk |
| CN201702464U (en) * | 2010-05-28 | 2011-01-12 | 王洪祥 | Precision hydraulic expansion mandrel |
| CN201848556U (en) * | 2010-10-13 | 2011-06-01 | 天津泵业机械集团有限公司 | Centering and expanding mandrel for machining excircle of bushing of screw pump |
| CN202964379U (en) * | 2012-11-21 | 2013-06-05 | 无锡市航鹄科技有限公司 | Machining and positioning jig for grinding inner holes |
| CN103341817A (en) * | 2013-06-21 | 2013-10-09 | 中国科学院上海技术物理研究所 | Inner hole grinding mandril with freely-adjusted outer diameter and manufacturing method thereof |
| CN203751800U (en) * | 2014-04-10 | 2014-08-06 | 江西铜业股份有限公司 | Machining device directly clamping threaded surface without damaging thread |
| CN204486936U (en) * | 2014-12-23 | 2015-07-22 | 内江神舟机电设备有限公司 | Liquid is swollen gear shaving technology equipment |
| CN204975392U (en) * | 2015-09-02 | 2016-01-20 | 南方风机股份有限公司 | Anchor clamps are moulded to dedicated liquid of thin wall axle sleeve |
Non-Patent Citations (1)
| Title |
|---|
| 一种磨削内孔的夹具——液性塑料胀胎;安吉慧;《机械工人.冷加工》;20060615(第6期);第41页 * |
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| CN106425832A (en) | 2017-02-22 |
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Effective date of registration: 20210127 Address after: 116000 2101-0006, 21 / F, Taide building, 537 Huangpu Road, Ganjingzi District, Dalian City, Liaoning Province Patentee after: Golden teeth transmission technology (Dalian) Co.,Ltd. Address before: No.2 linggong Road, Ganjingzi District, Dalian, Liaoning, 116024 Patentee before: DALIAN University OF TECHNOLOGY |