CN106826462A - Automatic pressure-regulating type ball crusher - Google Patents

Automatic pressure-regulating type ball crusher Download PDF

Info

Publication number
CN106826462A
CN106826462A CN201710192617.1A CN201710192617A CN106826462A CN 106826462 A CN106826462 A CN 106826462A CN 201710192617 A CN201710192617 A CN 201710192617A CN 106826462 A CN106826462 A CN 106826462A
Authority
CN
China
Prior art keywords
swing arm
control system
sphere diameter
automatic pressure
driving control
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.)
Granted
Application number
CN201710192617.1A
Other languages
Chinese (zh)
Other versions
CN106826462B (en
Inventor
吴江
吴昌虎
吴庆川
潘冬
洪波
叶浩
苏建
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.)
ANQING MACHINE TOOL Co Ltd
Original Assignee
ANQING MACHINE TOOL 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 ANQING MACHINE TOOL Co Ltd filed Critical ANQING MACHINE TOOL Co Ltd
Priority to CN201710192617.1A priority Critical patent/CN106826462B/en
Publication of CN106826462A publication Critical patent/CN106826462A/en
Application granted granted Critical
Publication of CN106826462B publication Critical patent/CN106826462B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B11/00Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor
    • B24B11/02Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor for grinding balls
    • B24B11/04Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor for grinding balls involving grinding wheels
    • B24B11/06Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor for grinding balls involving grinding wheels acting by the front faces, e.g. of plane, grooved or bevelled shape
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/005Feeding or manipulating devices specially adapted to grinding machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/02Frames; Beds; Carriages
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00Drives or gearings; Equipment therefor
    • B24B47/02Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00Drives or gearings; Equipment therefor
    • B24B47/10Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)

Abstract

The invention belongs to the detecting tool of bearing steel ball manufacturing and processing equipment, specifically related to a kind of automatic pressure-regulating type ball crusher, including body and loading plate, the body includes coaxial and mutually opposing emery disc and slotted disk, and the first drive mechanism for driving emery disc to rotate and for drive emery disc and slotted disk close to each other or away from the second drive mechanism, also include driving control system and sphere diameter on-line measuring device, the driving control system is electrically connected with the driving signal input of the first drive mechanism and the second drive mechanism, driving control system is electrically connected with the signal output part of sphere diameter on-line measuring device.The present invention utilizes the sphere diameter of sphere diameter detection means real-time online measuring steel ball, driving control system to realize the full-automatic pressure regulation of ball crusher according to the grinding pressure of measurement result real-time adjustment ball crusher, accelerates pressure adjustment response speed, improves grinding precision.

Description

Automatic pressure-regulating type ball crusher
Technical field
The invention belongs to the detecting tool of bearing steel ball manufacturing and processing equipment, and in particular to a kind of automatic pressure-regulating type abrading-ball Machine.
Background technology
Bearing ball is typically produced and processed using cold pier-grinding technics, and the blank surface after cold pier is relatively rough, is needed It is polished for a plurality of times and is polished.Ball crusher of the prior art mainly includes the emery disc and slotted disk that are oppositely arranged, is set on slotted disk There is the raceway of multiple concentric, its course of work is:Emery disc first is close to each other with slotted disk, close to a distance for diameter of the steel ball When, steel ball is sent into each raceway on slotted disk by conveying mechanism, while emery disc starts rotation, work of the steel ball in emery disc frictional force With below along rolling path rolling, while being polished, the discharging opening discharge that steel ball row enters on slotted disk after taking a round, in the process Also need to constantly reduce spacing between emery disc and slotted disk according to the diameter of steel ball, in the prior art, mainly by manually taking out The mode of sample measures the sphere diameter of steel ball by slide measure, controlled manually further according to measurement result ball crusher emery disc and slotted disk it Between spacing.The defect of this detection mode is:Operating personnel need to guard by equipment at any time, increase labour intensity; In addition, the response speed of equipment is slower, and after operating personnel's measurement is finished, when starting to adjust the spacing between emery disc and slotted disk, The change that the sphere diameter of possible steel ball further occurs, so as to influence the grinding precision of ball crusher.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of automatic pressure-regulating type abrading-ball that can automatically adjust grinding pressure Machine.
To achieve the above object, the invention provides following technical scheme:A kind of automatic pressure-regulating type ball crusher, including body And loading plate, the body include coaxial and mutually opposing emery disc and slotted disk, and for drive emery disc rotate first drive Motivation structure and for drive emery disc and slotted disk close to each other or away from the second drive mechanism, the charging aperture of the loading plate and go out The discharging opening and charging aperture of material mouth slotted disk respectively connect, and feeding is circulated for steel ball, also including driving control system and The driving signal input of sphere diameter on-line measuring device, the driving control system and the first drive mechanism and the second drive mechanism Electrical connection, driving control system is electrically connected with the signal output part of sphere diameter on-line measuring device, and driving control system being capable of basis The detection data of sphere diameter on-line measuring device is adjusted in real time to the rotating speed of the spacing and/or emery disc itself between emery disc and slotted disk It is whole.
The sphere diameter on-line measuring device includes swing arm, distance measuring sensor and swing arm drive device, the swing arm driving Device drives swing arm axis oscillating in the horizontal direction or moves in a circle;The front side of the swing arm is the linear velocity direction of swing arm The side of sensing opens up fluted, is seen along the axis direction, and the distance measuring sensor is located at the lifting section in concave slot sports path On, diameter of width of the swing arm on the axis direction less than steel ball to be measured;The swing arm is arranged on the upper of ball crusher On the wall of charging tray side, and the rotating shaft is vertical with the direction that steel ball in loading plate flows;Linear velocity of the swing arm in minimum point The flow direction of the steel ball in direction and loading plate is in the same direction;The signal output part of the distance measuring sensor and the swing arm driving The driving signal input of device is electrically connected with the driving control system.
The swing arm drive device is servomotor, and the driving control system is electric with the driving control system of servomotor Connection.
The servomotor is arranged on electric machine support, and the electric machine support is arranged on the side wall of the loading plate, institute State electric machine support and be provided with sensor stand, the distance measuring sensor is arranged on the sensor stand, the sensor stand On be also equipped with a reference block, the reference block overhangs on the detective path of the distance measuring sensor, and the swing arm exists In motion process, passed through in the crack that the groove in swing arm can be between distance measuring sensor and reference block.
The electric machine support is provided with the waist-shaped hole of vertical direction, and the electric machine support is by the waist-shaped hole and loading plate side Bolt connection is carried out between wall, makes the height adjustable of electric machine support in the vertical direction.
The sensor stand is provided with the waist-shaped hole of horizontal direction, and the sensor stand passes through the waist-shaped hole and motor Bolt connection is carried out between support, makes position of the sensor stand on the axis direction adjustable.
The reference block is provided with the waist-shaped hole of horizontal direction, the reference block by the waist-shaped hole and sensor stand it Between carry out bolt connection, make the crack width between reference block and distance measuring sensor adjustable.
The groove be ball groove, and the ball groove sphere diameter less than steel ball to be measured sphere diameter.
The technical effects of the invention are that:The present invention utilizes the ball of sphere diameter on-line measuring device real-time online measuring steel ball Footpath, driving control system realizes the full-automatic pressure regulation of ball crusher according to the grinding pressure of measurement result real-time adjustment ball crusher, Pressure adjustment response speed is accelerated, grinding precision is improve.
Brief description of the drawings
Fig. 1 is the structure principle chart of the automatic pressure-regulating type ball crusher that embodiments of the invention are provided;
Fig. 2 is the top view of the automatic pressure-regulating type ball crusher that embodiments of the invention are provided;
Fig. 3 is the dimensional structure diagram of the sphere diameter on-line measuring device that embodiments of the invention are provided;
Fig. 4 is the physical structural representation of another angle of the sphere diameter on-line measuring device that embodiments of the invention are provided Figure;
Fig. 5 is the top view of the sphere diameter on-line measuring device that embodiments of the invention are provided;
Fig. 6 is the side view of the sphere diameter on-line measuring device that embodiments of the invention are provided.
Specific embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, 2, a kind of automatic pressure-regulating type ball crusher, including body 10 and loading plate 20, the body 10 include Coaxial and mutually opposing emery disc 11 and slotted disk 12, and for the first drive mechanism 13 for driving emery disc 11 to rotate and for driving Dynamic emery disc 11 it is close to each other with slotted disk 12 or away from the second drive mechanism 14, the charging aperture and discharging opening point of the loading plate 20 The discharging opening and charging aperture of other slotted disk 12 connect, and feeding is circulated for steel ball, it is characterised in that:Also include drive control system System 40 and sphere diameter on-line measuring device 30, the drive mechanism 13 of the driving control system 40 and first and the second drive mechanism 14 Driving signal input electrical connection, driving control system 40 electrically connects with the signal output part of sphere diameter on-line measuring device 30, Driving control system 40 can be according to the detection data of sphere diameter on-line measuring device 30 to the spacing between emery disc 11 and slotted disk 12 And/or emery disc 11 rotating speed of itself carries out real-time adjustment.The present invention is using the real-time online measuring steel of sphere diameter on-line measuring device 30 The sphere diameter of ball, driving control system 40 realizes the complete of ball crusher according to the grinding pressure of measurement result real-time adjustment ball crusher Automatic Regulation, accelerates pressure adjustment response speed, improves grinding precision.
Preferably, as seen in figures 3-6, the sphere diameter on-line measuring device includes swing arm 31, distance measuring sensor 32 and pendulum Arm drive device, the swing arm drive device drives the axis oscillating in the horizontal direction of swing arm 31 or moves in a circle;The pendulum The front side of arm 31 is that the side of the linear velocity direction sensing of swing arm 31 opens up fluted 311, is seen along the axis direction, the survey It is located in the lifting section of the motion path of groove 311 away from sensor 32, width of the swing arm 31 on the axis direction is less than The diameter of steel ball to be measured;The swing arm 31 is arranged on the side wall of loading plate 20 of ball crusher 10, and the rotating shaft and loading plate 20 The direction of interior steel ball flowing is vertical;The flowing of the steel ball in linear velocity direction of the swing arm 31 in minimum point and loading plate 20 Direction is in the same direction;The driving signal input and institute of the signal output part of the distance measuring sensor 32 and the swing arm drive device Driving control system 40 is stated to electrically connect.The swing arm drive device is servomotor 33, the driving control system 40 and servo The drive control device electrical connection of motor 33.The servomotor 33 is arranged on electric machine support 34, and the electric machine support 34 is installed On the side wall of the loading plate 20, the electric machine support 34 is provided with sensor stand 35, and the distance measuring sensor 32 is installed On the sensor stand 35, a reference block 36 is also equipped with the sensor stand 35, the reference block 36 overhangs On the detective path of the distance measuring sensor 32, in motion process, groove 311 in swing arm 31 can be from for the swing arm 31 Passed through in crack between distance measuring sensor 32 and reference block 36.The electric machine support 34 is provided with the waist-shaped hole of vertical direction 341, the electric machine support 34 makes electric machine support 34 by carrying out bolt connection between the waist-shaped hole 341 and the side wall of loading plate 20 The height adjustable of in the vertical direction.The sensor stand 35 is provided with the waist-shaped hole 351 of horizontal direction, the sensor branch Frame 35 makes sensor stand 35 in the axis direction by carrying out bolt connection between the waist-shaped hole 351 and electric machine support 34 On position it is adjustable.The reference block 36 is provided with the waist-shaped hole 361 of horizontal direction, and the reference block 36 passes through the waist-shaped hole Bolt connection is carried out between 361 and sensor stand 35, makes the crack width between reference block 36 and distance measuring sensor 32 adjustable. The groove 311 be ball groove, and the ball groove sphere diameter less than steel ball to be measured sphere diameter.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.

Claims (8)

1. a kind of automatic pressure-regulating type ball crusher, including body (10) and loading plate (20), the body (10) include coaxial and phase Mutual opposed emery disc (11) and slotted disk (12), and for the first drive mechanism (13) for driving emery disc (11) to rotate and for driving Dynamic emery disc (11) it is close to each other with slotted disk (12) or away from the second drive mechanism (14), the charging aperture of the loading plate (20) and The discharging opening and charging aperture of discharging opening difference slotted disk (12) connect, and feeding is circulated for steel ball, it is characterised in that:Also include Driving control system (40) and sphere diameter on-line measuring device (30), the driving control system (40) and the first drive mechanism (13) and the second drive mechanism (14) driving signal input electrical connection, driving control system (40) and sphere diameter on-line checking are filled The signal output part electrical connection of (30) is put, driving control system (40) can be according to the detection number of sphere diameter on-line measuring device (30) Real-time adjustment is carried out according to the spacing between emery disc (11) and slotted disk (12) and/or emery disc (11) rotating speed of itself.
2. automatic pressure-regulating type ball crusher according to claim 1, it is characterised in that:The sphere diameter on-line measuring device includes Swing arm (31), distance measuring sensor (32) and swing arm drive device, the swing arm drive device drive swing arm (31) along level side To axis oscillating or move in a circle;The front side of the swing arm (31) is that the side of the linear velocity direction sensing of swing arm (31) is opened Groove (311) is provided with, is seen along the axis direction, lifting of the distance measuring sensor (32) positioned at groove (311) motion path Duan Shang, diameter of width of the swing arm (31) on the axis direction less than steel ball to be measured;The swing arm (31) is arranged on On loading plate (20) side wall of ball crusher (10), and the rotating shaft is vertical with the direction that the interior steel ball of loading plate (20) flows;It is described The flow direction of the steel ball in linear velocity direction of the swing arm (31) in minimum point and loading plate (20) is in the same direction;The range finding sensing The signal output part of device (32) and the driving signal input of the swing arm drive device and the driving control system (40) Electrical connection.
3. automatic pressure-regulating type ball crusher according to claim 2, it is characterised in that:The swing arm drive device is servo electricity Machine (33), the driving control system (40) electrically connects with the drive control device of servomotor (33).
4. automatic pressure-regulating type ball crusher according to claim 3, it is characterised in that:The servomotor (33) is installed in electricity On machine support (34), the electric machine support (34) on the side wall of the loading plate (20), on the electric machine support (34) Be provided with sensor stand (35), the distance measuring sensor (32) on the sensor stand (35), the sensor stand (35) reference block (36) is also equipped with, the reference block (36) overhangs on the detection road of the distance measuring sensor (32) On footpath, in motion process, the groove (311) in swing arm (31) can be from distance measuring sensor (32) and benchmark for the swing arm (31) Passed through in crack between block (36).
5. automatic pressure-regulating type ball crusher according to claim 4, it is characterised in that:The electric machine support (34) is provided with perpendicular Nogata to waist-shaped hole (341), the electric machine support (34) carries out by between the waist-shaped hole (341) and loading plate (20) side wall Bolt connection, makes the height adjustable of electric machine support (34) in the vertical direction.
6. automatic pressure-regulating type ball crusher according to claim 4, it is characterised in that:The sensor stand (35) is provided with The waist-shaped hole (351) of horizontal direction, the sensor stand (35) is entered by between the waist-shaped hole (351) and electric machine support (34) Row bolt connection, makes position of the sensor stand (35) on the axis direction adjustable.
7. automatic pressure-regulating type ball crusher according to claim 4, it is characterised in that:The reference block (36) is provided with level The waist-shaped hole (361) in direction, the reference block (36) carries out bolt by between the waist-shaped hole (361) and sensor stand (35) Connection, makes the crack width between reference block (36) and distance measuring sensor (32) adjustable.
8. automatic pressure-regulating type ball crusher according to claim 4, it is characterised in that:The groove (311) is ball groove, and should Sphere diameter of the sphere diameter of ball groove less than steel ball to be measured.
CN201710192617.1A 2017-03-28 2017-03-28 Automatic pressure-regulating type ball crusher Active CN106826462B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710192617.1A CN106826462B (en) 2017-03-28 2017-03-28 Automatic pressure-regulating type ball crusher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710192617.1A CN106826462B (en) 2017-03-28 2017-03-28 Automatic pressure-regulating type ball crusher

Publications (2)

Publication Number Publication Date
CN106826462A true CN106826462A (en) 2017-06-13
CN106826462B CN106826462B (en) 2019-01-08

Family

ID=59141686

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710192617.1A Active CN106826462B (en) 2017-03-28 2017-03-28 Automatic pressure-regulating type ball crusher

Country Status (1)

Country Link
CN (1) CN106826462B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111266959A (en) * 2020-04-02 2020-06-12 安庆机床有限公司 Ball grinder anti-parallel disc device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2810885Y (en) * 2005-06-24 2006-08-30 安庆机床有限公司 Horizontal iron ball lapping machine
CN1833817A (en) * 2006-04-13 2006-09-20 浙江超然数控机械有限公司 Digital controlled sperical grinding machine having auto detection
CN102554737A (en) * 2012-02-29 2012-07-11 无锡市飞云球业有限公司 Ball discharging structure of grinder for balls
CN105136092A (en) * 2015-10-15 2015-12-09 新乡日升数控轴承装备股份有限公司 Steel ball measuring mechanism
CN105301014A (en) * 2015-12-15 2016-02-03 金晓彬 Sphere surface development device and sphere surface defect detection equipment by using same
JP5941236B1 (en) * 2016-02-12 2016-06-29 株式会社天辻鋼球製作所 High-precision spherical dimension measuring device and spherical polishing device
CN206795480U (en) * 2017-03-28 2017-12-26 安庆机床有限公司 Automatic pressure-regulating type ball crusher

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2810885Y (en) * 2005-06-24 2006-08-30 安庆机床有限公司 Horizontal iron ball lapping machine
CN1833817A (en) * 2006-04-13 2006-09-20 浙江超然数控机械有限公司 Digital controlled sperical grinding machine having auto detection
CN102554737A (en) * 2012-02-29 2012-07-11 无锡市飞云球业有限公司 Ball discharging structure of grinder for balls
CN105136092A (en) * 2015-10-15 2015-12-09 新乡日升数控轴承装备股份有限公司 Steel ball measuring mechanism
CN105301014A (en) * 2015-12-15 2016-02-03 金晓彬 Sphere surface development device and sphere surface defect detection equipment by using same
JP5941236B1 (en) * 2016-02-12 2016-06-29 株式会社天辻鋼球製作所 High-precision spherical dimension measuring device and spherical polishing device
CN206795480U (en) * 2017-03-28 2017-12-26 安庆机床有限公司 Automatic pressure-regulating type ball crusher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111266959A (en) * 2020-04-02 2020-06-12 安庆机床有限公司 Ball grinder anti-parallel disc device

Also Published As

Publication number Publication date
CN106826462B (en) 2019-01-08

Similar Documents

Publication Publication Date Title
CN106863133A (en) Ball crusher sphere diameter detection means
CN106441088B (en) A kind of detector for train wheel pair size and run-out tolerance on-line detecting system
CN102353336B (en) Grouping device capable of realizing dynamic non-contact precise measurement for diameters of bearing balls
CN108507509A (en) A kind of housing washer bounce automatic measuring instrument and its measurement method
CN102620888B (en) Heavy vehicle mass and mass center detection device
CN107084673A (en) A kind of the measurement detection means and detection method of motor vehicle wheels external diameter and internal diameter
CN205909789U (en) Detection apparatus for radial circle is beated
CN104713498B (en) Automatic anglec of rotation detecting tool under a kind of supported at three point
KR20140077010A (en) Classification Apparatus for Auto Instrumentation of Taper Roller
CN106644936A (en) Elevator sliding guide shoe liner testing machine
CN106345704A (en) Seamless table tennis ball bounce performance detection and sorting device
CN105108649B (en) Non-contact type method for detecting arc profile and radius of metal-based arc grinding wheel on site and device for implementing method
CN108195323A (en) A kind of degree of plainness for wall surface measuring method
CN104567656B (en) impeller detecting device
CN206795480U (en) Automatic pressure-regulating type ball crusher
CN103123338A (en) Non-contact type automatic adjusting mechanism of pipeline nondestructive inspection ultrasonic probe
CN206556608U (en) A kind of contactless three coordinate measuring machine of high-speed, high precision
CN106826462A (en) Automatic pressure-regulating type ball crusher
CN206795578U (en) Ball crusher sphere diameter detection means
CN108594212A (en) A kind of comprehensive range unit
CN108188932A (en) A kind of diameter of part On-Line Control Method of precision cylindrical grinder
CN105698709B (en) A kind of measuring method of taper roller radius of curvature
CN203083771U (en) High-accuracy quality characteristic measuring instrument
CN100544838C (en) Bearing channel automatic sorting machine
CN110411634A (en) Spherical base surface of tapered roller is ground force measuring device and method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant