CN108500818A - A kind of stainless steel inner surface polishing machine - Google Patents
A kind of stainless steel inner surface polishing machine Download PDFInfo
- Publication number
- CN108500818A CN108500818A CN201810554066.3A CN201810554066A CN108500818A CN 108500818 A CN108500818 A CN 108500818A CN 201810554066 A CN201810554066 A CN 201810554066A CN 108500818 A CN108500818 A CN 108500818A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- pedestal
- block
- wall
- steel tube
- 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.)
- Withdrawn
Links
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
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
- B24B29/06—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for elongated workpieces having uniform cross-section in one main direction
- B24B29/08—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for elongated workpieces having uniform cross-section in one main direction the cross-section being circular, e.g. tubes, wires, needles
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
-
- 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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
- B24B55/03—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant designed as a complete equipment for feeding or clarifying coolant
Abstract
The invention discloses a kind of stainless steel inner surface polishing machines of stainless steel processing technique field,Including pedestal and stainless steel tube,The top left side of the pedestal is movably set with sliding panel,The output end of the servo motor one is provided with driving gear,It is fixedly installed the identical fixation kit of structure at left and right sides of the top of the sliding panel,The output end of the servo motor two is provided with rotating bar,The other end of the rotating bar extends on the left of stainless steel tube inner cavity and is connected with connecting rod,Buffing wheel component is fixedly connected on the left of the connecting rod,Using buffing wheel component and fixation kit,Fixation kit is adjusted fixation according to the thickness of the stainless steel tube of required polishing,Ensure stability of the stainless steel tube in polishing process,And buffing wheel component using grinding wheel during being polished,It is seeped water outward by water seepage hole,The heat generated in polishing process can be effectively reduced,Stainless steel tube is avoided to deform.
Description
Technical field
The present invention relates to stainless steel processing technique field, specially a kind of stainless steel inner surface polishing machine.
Background technology
Stainless steel has the characteristics that corrosion resistance is strong, intensity is high and exquisite appearance and is widely used, and client is to stainless steel
The quality requirement on surface is also higher and higher, its outer surface is not only needed to be processed by shot blasting to be also required to be polished surface it
Processing.
And existing polishing machine, when the inner surface to stainless steel tube is polished, there is some defects, stainless steel tubes
Thickness it is different, existing stainless steel polishing machine can not fix the stainless steel tube of different-thickness well, stability compared with
Difference, and during polishing, do not cool down in time to buffing wheel, stainless steel can be caused to deform, seriously affected stainless
Steel quality, for this purpose, we have proposed a kind of stainless steel inner surface polishing machines.
Invention content
It is mentioned above in the background art to solve the purpose of the present invention is to provide a kind of stainless steel inner surface polishing machine
Problem.
To achieve the above object, the present invention provides the following technical solutions：A kind of stainless steel inner surface polishing machine, including pedestal
And stainless steel tube, the top left side of the pedestal are movably set with sliding panel, inner wall is provided with servo on rear side of the base intracavity
The output end of motor one, the servo motor one is provided with driving gear, and driving gear is located at sliding panel bottom left, and bottom
The top of seat offer with the matched movable port of driving gear, the bottom of the sliding panel is evenly arranged with and driving gear
The top left and right sides of the teeth being meshed, the sliding panel is fixedly installed the identical fixation kit of structure, and fixed group
Part is socketed in stainless steel tube outer wall, and the right hand top of the pedestal is provided with servo motor two, the servo electricity by buffer stopper
The output end of machine two is provided with rotating bar, and the other end of the rotating bar, which extends on the left of stainless steel tube inner cavity, is connected with connection
Bar is fixedly connected with buffing wheel component on the left of the connecting rod, and the left and right sides of the pedestal, which is symmetrically arranged with, catchments
Case.
Preferably, the left side fixation kit include with the fixed block that is fixedly connected at the top of sliding panel, on the fixed block
Round port is offered, movable block and sliding slot, and two groups are symmetrically arranged at the top and bottom of the outer right wall of the fixed block
Movable block is located at the top and bottom of round port, and two groups of sliding slots are located at the top and bottom of round port, the work
The sliding block to match with sliding slot is provided on the right side of motion block, the opposite side of movable block described in two groups is both provided with rubber fixture block,
And the opposite side of two groups of rubber fixture blocks offers arc contained side, the opposite side rear end of movable block described in two groups, which passes through, stretches
Bar connects, and the opposite side front end of movable block described in two groups is provided through adjusting rod, the outer wall top of the adjusting rod up and down
Adjusting screw thread is offered with bottom, and top movable block is located at the top that top adjusts screw thread, and bottom movable block is located at bottom
Portion adjusts the bottom of screw thread, and the top adjusting screw thread and bottom adjust the oppositely oriented of screw thread.
Preferably, the buffing wheel component includes the grinding wheel being fixedly connected with connecting rod left end, the top of the grinding wheel
Outer wall is uniformly provided with water seepage hole, and cotton thread is both provided in the water seepage hole, and cotton thread knot is provided in the middle part of cotton thread, and seeps water
The both sides in hole offer the card slot to match with cotton thread knot, and top external of the left side outer wall of the grinding wheel offers water inlet,
And water inlet is provided with sealing cover.
Preferably, it is both provided with sliding block at left and right sides of the bottom of the sliding panel, and is offered at the top of pedestal and sliding block
The sliding slot to match.
Preferably, the outer wall of the rotating bar is socketed with supporting sleeve, and the bottom of the supporting sleeve passes through supporting rod and pedestal
Top connection, and supporting sleeve is between right side header tank and servo motor two.
Preferably, the outer wall annular array of the rotating bar offers fixed card slot, and the inner wall of connecting rod offer with
The fixation fixture block that fixed card slot matches.
Compared with prior art, the beneficial effects of the invention are as follows：
1. the stainless steel inner surface polishing machine drives driving gear rotation by servo motor one, driving gear, which drives, to be slided
Movable plate moves left and right, and is combined with servo motor two and drives the rotation of buffing wheel component, to solid by fixation kit at the top of sliding panel
Fixed stainless steel pipe inner surface is polished, and improves the working efficiency and work quality of polishing；
2. the stainless steel inner surface polishing machine, using buffing wheel component and fixation kit, fixation kit can be according to required
The thickness for the stainless steel tube to be polished is adjusted fixation, ensures stability of the stainless steel tube in polishing process, and polishing sand
Wheel assembly is seeped water by water seepage hole, can not only be effectively reduced in polishing process during being polished using grinding wheel outward
The heat of generation, avoids stainless steel tube from deforming, and the dust that subsequent processing can also be facilitated to polish when generates.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is fixation kit structural schematic diagram of the present invention；
Fig. 3 is buffing wheel component structure diagram of the present invention.
In figure：1 pedestal, 2 sliding panels, 3 sliding blocks, 4 servo motors one, 5 driving gears, 6 fixation kits, 61 fixed blocks, 62
Movable block, 63 sliding slots, 64 rubber fixture blocks, 65 adjusting rods, 66 adjust screw threads, 67 telescopic rods, 7 servo motors two, 8 rotating bars, 9
Support set, 10 supporting rods, 11 header tanks, 12 buffing wheel components, 121 grinding wheels, 122 water seepage holes, 123 cotton threads, 124 water inlets, 125
Sealing cover, 13 connecting rods, 14 stainless steel tubes.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of stainless steel inner surface polishing machine, including 1 He of pedestal
The top left side of stainless steel tube 14, pedestal 1 is movably set with sliding panel 2, and inner wall is provided with servo motor one on rear side of 1 inner cavity of pedestal
4, and servo motor 1 is connect by conducting wire with external power supply, the output end of servo motor 1 is provided with driving gear 5, and main
Moving gear 5 is located at 2 bottom left of sliding panel, and the top of pedestal 1 offers and the matched movable port of driving gear 5, cunning
The bottom of movable plate 2 is evenly arranged with the teeth being meshed with driving gear 5, and the rotation of driving gear 5 drives sliding panel 2 by teeth
It is mobile, it is fixedly installed the identical fixation kit 6 of structure at left and right sides of the top of sliding panel 2, for what is polished as needed
14 thickness of stainless steel tube is adjusted, and fixation kit 6 is socketed in 14 outer wall of stainless steel tube, and the right hand top of pedestal 1 passes through
Buffer stopper is provided with servo motor 27, and servo motor 27 is connect by conducting wire with external power supply, the output of servo motor 27
End is provided with rotating bar 8, and the other end of rotating bar 8, which extends on the left of 14 inner cavity of stainless steel tube, is connected with connecting rod 13, connecting rod
13 left side is fixedly connected with buffing wheel component 12, and the left and right sides of pedestal 1 is symmetrically arranged with header tank 11, in sliding panel
2 or so drive stainless steel tubes 14 move left and right, and the water oozed out by water seepage hole 122 in buffing wheel component 12 can be in mobile mistake
Header tank 11, personnel's recovery processing easy to use are flowed outwardly in journey.
Wherein, left side fixation kit 6 includes the fixed block 61 being fixedly connected with 2 top of sliding panel, is opened up on fixed block 61
There is round port, movable block 62 and sliding slot 63, and two groups of work are symmetrically arranged at the top and bottom of the outer right wall of fixed block 61
Motion block 62 is located at the top and bottom of round port, and two groups of sliding slots 63 are located at the top and bottom of round port, activity
The right side of block 62 is provided with the sliding block to match with sliding slot 63, and the opposite side of two groups of movable blocks 62 is both provided with rubber fixture block
64, the abrasion to 14 outer wall of stainless steel tube is reduced, and the opposite side of two groups of rubber fixture blocks 64 offers arc contained side, it is convenient
Fixed stainless steel tube 14, the opposite side rear end of two groups of movable blocks 62 is connected by telescopic rod 67, when rotating adjusting rod 65, two
Group movable block 62 can move, and telescopic rod 67 ensure that stability when moving, occur when two groups of movable blocks 62 being avoided to move inclined
It moves, the opposite side front end of two groups of movable blocks 62 is provided through adjusting rod 65 up and down, for the stainless steel according to different-thickness
Pipe 14 adjusts two groups of movable blocks 62 to rotate, and is offered at the top and bottom of the outer wall of adjusting rod 65 and adjusts screw thread 66, and top
Movable block 62 is located at the top that top adjusts screw thread 66, and bottom movable block 62 is located at the bottom that bottom adjusts screw thread 66, top
It adjusts screw thread 66 and bottom adjusts the oppositely oriented of screw thread 66, by rotating adjusting rod 65, you can keep two groups of movable blocks 62 mutual
It draws close, fixation is clamped to 14 inner wall of stainless steel tube；
Buffing wheel component 12 includes the grinding wheel 121 being fixedly connected with 13 left end of connecting rod, and the top exterior walls of grinding wheel 121 are equal
It is even to offer water seepage hole 122, cotton thread 123 is both provided in water seepage hole 122, and the middle part of cotton thread 123 is provided with cotton thread knot, and ooze
The both sides in water hole 122 offer the card slot to match with cotton thread knot, and water is avoided to be turned rapidly during grinding wheel 121 rotates
Go out, top external of the left side outer wall of grinding wheel 121 offers water inlet 124, for adding water, and is provided at water inlet 124
Sealing cover 125；
It is both provided with sliding block 3 at left and right sides of the bottom of sliding panel 2, and the top of pedestal 1 offers and matches with sliding block 3
Sliding slot provides stability when sliding panel 2 moves for sliding panel 2；
The outer wall of rotating bar 8 is socketed with supporting sleeve 9, and the bottom of supporting sleeve 9 is connected by supporting rod 10 and the top of pedestal 1
It connects, and supporting sleeve 9 provides support force for rotating bar 8, it is strong to improve structure between right side header tank 11 and servo motor 27
Degree；
The outer wall annular array of rotating bar 8 offers fixed card slot, and the inner wall of connecting rod 13 offers and fixed card slot
The fixation fixture block to match, easy to disassemble, personnel easy to use carry out dismounting addition water or replace grinding wheel 121.
Operation principle：Before use, guarantee water seepage hole 122 upwards, adds water into grinding wheel 121 by water inlet 124, leads to
It crosses sealing cover 125 and seals water inlet 124, pass through fixation fixture block and 8 outer wall of rotating bar of 121 right-side connecting bar of grinding wheel, 13 inner wall
Fixed card slot is fixed, and stainless steel tube 14 is fixed by fixation kit 6, and the both ends of stainless steel tube 14 are distinguished
Round port on fixation kit 6 rotates adjusting rod 65, so that two groups of movable blocks 62 is mutually drawn close, pass through rubber fixture block 64
Clamping is fixed, pushes stainless steel tube 14, grinding wheel 121 is made to be located at the left side of 14 inner cavity of stainless steel tube, starts servo motor 1
With servo motor 27, servo motor 1 drives driving gear 5 to rotate, the teeth that the rotation of driving gear 5 passes through 2 bottom of sliding panel
Driven sliding panel 2 to move left and right, be combined with the rotation of grinding wheel 121 of the drive of servo motor 27 to the inner cavity of stainless steel tube 14 into
The comprehensive polishing of row, during servo motor 27 rotates, is influenced by centrifugal force, and the water in grinding wheel 121 is from water seepage hole
It uniformly oozes out at 122, cools down to grinding wheel 121 outward, while the particle dust generated in polishing also being made not adhere to
In the inner wall of stainless steel tube 14, during sliding panel 2 moves left and right, the water in stainless steel tube 14 is gradually flowed outwardly to collection
Water tank 11 after the completion of polishing, is recycled the water in header tank 11.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of stainless steel inner surface polishing machine, including pedestal (1) and stainless steel tube (14), it is characterised in that：The pedestal (1)
Top left side be movably set with sliding panel (2), inner wall is provided with servo motor one (4) on rear side of pedestal (1) inner cavity, described
The output end of servo motor one (4) is provided with driving gear (5), and driving gear (5) is located at sliding panel (2) bottom left, and
Offered at the top of pedestal (1) with the matched movable port of driving gear (5), the bottom of the sliding panel (2) is uniformly arranged
There are the teeth being meshed with driving gear (5), it is identical to be fixedly installed structure at left and right sides of the top of the sliding panel (2)
Fixation kit (6), and fixation kit (6) is socketed in stainless steel tube (14) outer wall, the right hand top of the pedestal (1) passes through buffering
Block is provided with servo motor two (7), and the output end of the servo motor two (7) is provided with rotating bar (8), the rotating bar (8)
The other end extend on the left of stainless steel tube (14) inner cavity and be connected with connecting rod (13), the left side of the connecting rod (13), which is fixed, to be connected
It is connected to buffing wheel component (12), the left and right sides of the pedestal (1) is symmetrically arranged with header tank (11).
2. a kind of stainless steel inner surface polishing machine according to claim 1, it is characterised in that：The left side fixation kit
(6) include the fixed block (61) being fixedly connected with sliding panel (2) top, round port, institute are offered on the fixed block (61)
It states and is symmetrically arranged with movable block (62) and sliding slot (63), and two groups of movable blocks at the top and bottom of the outer right wall of fixed block (61)
(62) it is located at the top and bottom of round port, and two groups of sliding slots (63) are located at the top and bottom of round port, it is described
The sliding block to match with sliding slot (63) is provided on the right side of movable block (62), the opposite side of movable block (62) described in two groups is all provided with
It is equipped with rubber fixture block (64), and the opposite side of two groups of rubber fixture blocks (64) offers arc contained side, movable block described in two groups
(62) opposite side rear end is connected by telescopic rod (67), and the opposite side front end of movable block (62) described in two groups is run through up and down
It is provided with adjusting rod (65), is offered at the top and bottom of the outer wall of the adjusting rod (65) and adjusts screw thread (66), and top is lived
Motion block (62) is located at the top that top adjusts screw thread (66), and bottom movable block (62) is located at the bottom that bottom adjusts screw thread (66)
Portion, the top adjusting screw thread (66) and bottom adjust the oppositely oriented of screw thread (66).
3. a kind of stainless steel inner surface polishing machine according to claim 1, it is characterised in that：The buffing wheel component
(12) include the grinding wheel (121) being fixedly connected with connecting rod (13) left end, the top exterior walls of the grinding wheel (121) are uniformly provided with
Water seepage hole (122), the water seepage hole (122) is interior to be both provided with cotton thread (123), and is provided with cotton thread knot in the middle part of cotton thread (123),
And the both sides of water seepage hole (122) offer the card slot to match with cotton thread knot, top outer of the left side outer wall of the grinding wheel (121)
It sets and offers water inlet (124), and be provided with sealing cover (125) at water inlet (124).
4. a kind of stainless steel inner surface polishing machine according to claim 1, it is characterised in that：The bottom of the sliding panel (2)
It is both provided with sliding block (3) at left and right sides of portion, and offers the sliding slot to match with sliding block (3) at the top of pedestal (1).
5. a kind of stainless steel inner surface polishing machine according to claim 1, it is characterised in that：Outside the rotating bar (8)
Wall is socketed with supporting sleeve (9), and the bottom of the supporting sleeve (9) is connect by supporting rod (10) with the top of pedestal (1), and supports
Set (9) is located between right side header tank (11) and servo motor two (7).
6. a kind of stainless steel inner surface polishing machine according to claim 1, it is characterised in that：Outside the rotating bar (8)
Wall circular array offers fixed card slot, and the inner wall of connecting rod (13) offers the fixation fixture block to match with fixed card slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810554066.3A CN108500818A (en) | 2018-06-01 | 2018-06-01 | A kind of stainless steel inner surface polishing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810554066.3A CN108500818A (en) | 2018-06-01 | 2018-06-01 | A kind of stainless steel inner surface polishing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108500818A true CN108500818A (en) | 2018-09-07 |
Family
ID=63402637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810554066.3A Withdrawn CN108500818A (en) | 2018-06-01 | 2018-06-01 | A kind of stainless steel inner surface polishing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108500818A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111906687A (en) * | 2019-05-08 | 2020-11-10 | 潜山县凯创橡塑机械制造有限公司 | Clamping and fixing device of inner hole grinding and polishing machine |
-
2018
- 2018-06-01 CN CN201810554066.3A patent/CN108500818A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111906687A (en) * | 2019-05-08 | 2020-11-10 | 潜山县凯创橡塑机械制造有限公司 | Clamping and fixing device of inner hole grinding and polishing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208592693U (en) | A kind of industrial machinery automatic sander | |
| CN209007251U (en) | A kind of double end Full-automatic special-shaped edge polisher | |
| CN205996752U (en) | A kind of five metals sander | |
| CN110052941A (en) | A kind of three site polishing machine tools based on mechanical grinding | |
| CN107471020A (en) | A kind of gear teeth burr polishing device | |
| CN111906666A (en) | Steel bar surface rust removal device for building construction | |
| CN211029491U (en) | Polishing and rust removing device for machining hardware pipe | |
| CN109834198A (en) | A kind of house bridge construction anglebender structure and its bending method | |
| CN108500818A (en) | A kind of stainless steel inner surface polishing machine | |
| CN205835008U (en) | A kind of steel pipe polissoir | |
| CN105945001B (en) | One kind automation hardware cleaning machine | |
| CN108068002A (en) | A kind of outer wall buffing attachment of composite steel tube | |
| CN208262557U (en) | A kind of stainless steel inner surface polishing machine | |
| CN211414595U (en) | Quartz tube inner hole polishing equipment | |
| CN108906746A (en) | A kind of machining equipment cleaning device | |
| CN210413993U (en) | Fixing device is used in bearing production | |
| CN106826511A (en) | One kind can fix precision part polishing machine | |
| CN208628929U (en) | Positioning tool is used in a kind of processing of axle central siphon | |
| CN211073008U (en) | Water-cooled wall band steel is polished and school shape equipment | |
| CN206123409U (en) | Steel pipe burnishing machine | |
| CN213470549U (en) | Ceramic electronic smoke tube grinding device | |
| CN209007301U (en) | A kind of useless rust removing device for steel tube | |
| CN212444184U (en) | Novel drilling equipment is used in iron core processing | |
| CN209207129U (en) | A kind of machinery processing apparatus with edging function | |
| CN209774260U (en) | Intelligent product surface polishing grinding machanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180907 |