CN203390326U - Forming gear milling machine for inner gear rings - Google Patents

Forming gear milling machine for inner gear rings Download PDF

Info

Publication number
CN203390326U
CN203390326U CN201320473245.7U CN201320473245U CN203390326U CN 203390326 U CN203390326 U CN 203390326U CN 201320473245 U CN201320473245 U CN 201320473245U CN 203390326 U CN203390326 U CN 203390326U
Authority
CN
China
Prior art keywords
milling head
gear
worm
parts
decelerator
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Withdrawn - After Issue
Application number
CN201320473245.7U
Other languages
Chinese (zh)
Inventor
王斌
邓效忠
邓静
张波
吴孜越
姬爱玲
李更更
李天兴
李聚波
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.)
Henan University of Science and Technology
Original Assignee
Henan University of Science and Technology
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 Henan University of Science and Technology filed Critical Henan University of Science and Technology
Priority to CN201320473245.7U priority Critical patent/CN203390326U/en
Application granted granted Critical
Publication of CN203390326U publication Critical patent/CN203390326U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a forming gear milling machine for inner gear rings. The forming gear milling machine comprises a rotary guide rail assembly, an upright column assembly, a milling head assembly, a milling head support, a disc-shaped workpiece platform, platform struts and workpiece supports. A center hole is formed in the disc-shaped workpiece platform. The forming gear milling machine has the advantages that a milling head is no longer suspended owing to the built-in milling head assembly, so that the rigidity of the milling head assembly can be improved; owing to the built-in milling head assembly, expansion of a machining range of a machine tool is only determined by the lengths of horizontal guide rails on the workpiece platform, and constraints of machining specifications of the traditional machine tool on the dimensions of a rotary workbench are broken through; owing to the mobility of the milling head assembly, the difficult problem that large-specification worm and gear pairs in large-specification rotary workbenches are required to be manufactured is solved; owing to a mode that workpieces are fixed while the milling head assembly rotates along with the upright column assembly, difficult problems of high impact load, easiness in abrasion and difficulty in precision positioning of the worm and gear pairs in the rotary workbenches during large-size gear machining can be solved.

Description

A kind of ring gear moulding tooth milling machine
Technical field
The utility model relates to a kind of gear cutting machine, especially relates to a kind of ring gear moulding tooth milling machine.
Background technology
In traditional numerical control ring gear moulding tooth gear milling machine, workpiece is installed on rotary table, and rotary table drives workpiece to realize a minute tooth motion.Milling head parts hang on the pillar parts of outer workpiece, and milling head parts can move up and down.Pillar parts is arranged on it the horizontal beds of rotary table outside, along horizontal guide rail, moves, and milling head overhangs from workpiece outside and enters ring gear and complete mill teeth.Such layout just requires the rigidity of column, milling head very good, otherwise machining accuracy is difficult to guarantee; Owing to being subject to the overhang restriction of length of milling head, make the change in size scope of the minimax gear ring that the lathe of every kind of specification can process little, cause ring gear moulding tooth gear milling machine specification many; In this machine arrangement, for large-scale ring gear, add a plurality of work mounting s, total load-bearing of rotary table often reaches tens of tons, after each minute tooth, rotary table steadily, accurately stops all depending on worm couple, cause like this worm couple for a long time, frequently to bear huge shock loading, certainly will cause like this wearing and tearing of worm couple to be accelerated, reduce a minute tooth precision.When especially dividing movement adopts closed-loop control, the adjustment back and forth of the worm couple that calibration is used is more frequent, the serious wear that causes worm couple, even if worktable part is provided with static pressure unloading, brake damping mechanism, it is poor that the precision stability of rotary table also becomes, and this is very large for Gear Processing Accuracy undoubtedly.
Utility model content
The purpose of this utility model is the deficiency for solving the problems of the technologies described above, a kind of ring gear moulding tooth milling machine is provided, the problem such as the change in size scope that solved the minimax gear ring that lathe can process is little, milling head overhangs, worm couple is easy to wear.
The utility model is the deficiency solving the problems of the technologies described above, and the technical scheme adopting is:
A kind of ring gear moulding tooth milling machine, comprise circular guideway parts, pillar parts, milling head parts, milling head support, have the round-disk shape workpiece platform of centre bore, studdle and work mounting s, described circular guideway parts are provided with the revolving dial of guide rail by upper surface, horizontal slide, Integral pedestal, and for providing the drive unit of power, revolving dial and horizontal slide form, revolving dial is arranged on Integral pedestal, the centre of gyration of revolving dial and the center superposition of Integral pedestal, the guide rail of horizontal slide and revolving dial upper surface is in mating connection, pillar parts is fixed on horizontal slide, milling head parts are fixed on the upper end of pillar parts by milling head support, work piece platform is fixed on the top of the studdle of Integral pedestal circle distribution, milling head parts are through the centre bore in work piece platform, work mounting s radially slides and is arranged on work piece platform upper surface, work mounting s is a plurality of and is circumferentially uniformly distributed along work piece platform.
Described drive unit adopts servomotor I to drive worm and gear auxiliary driving by decelerator I.
Described pillar parts comprises Upright post base, on outer circumference surface, offer the circular lifting column of gathering sill, positioning adapter, directed briquetting, ball screw assembly, III, nut seat, decelerator III and servomotor III, circular lifting column is slidably mounted in the positioning adapter in Upright post base, on the sidewall of Upright post base and positioning adapter, offer locating hole, directed briquetting is fixed in locating hole, and be equipped with the gathering sill on circular lifting column, servomotor III is fixed on Upright post base, and drive ball screw assembly, III to rotate by decelerator III, ball screw assembly, III drives the nut seat motion being fixed on circular lifting column.
Described milling head parts comprise milling head casing, cutter, cutter shaft, decelerator IV, spindle motor and the transmission mechanism being comprised of a plurality of intermediate propeller shafts and a plurality of travelling gear, described spindle motor drives transmission mechanism by decelerator IV, and transmission mechanism drives cutter shaft to drive cutter work.
The center of described milling head support is provided with rotating central hole, and milling head parts are arranged in rotating central hole.
The ball screw assembly, II that described horizontal slide is connected by its bottom drives and slides along described guide rail, and the decelerator II that ball screw assembly, II is driven by servomotor II drives.
Described worm couple comprises the active worm screw being arranged on Integral pedestal, driven worm screw, worm gear, bevel gear set and the gap oil cylinder that disappears, worm gear is arranged on revolving dial bottom, its rotation overlaps with the axis of rotation of revolving dial, initiatively worm screw and driven worm screw all mesh with worm gear, initiatively mesh by one end of bevel gear set and driven worm screw one end of worm screw, the other end of driven worm screw is connected with the gap oil cylinder that disappears, and initiatively the other end of worm screw is connected with the output shaft of decelerator I.
On described work mounting s, be provided with the fixture for fixation workpiece.
The beneficial effects of the utility model are: owing to having adopted said structure, the built-in milling head that makes of milling head parts no longer overhangs, and milling head parts rigidity is strengthened; The built-in of milling head parts makes the expansion of machine tooling scope only be decided by the horizontal guide rail length in work piece platform, broken traditional machine tool and processed the restriction that specification is decided by rotary table size.The movement of milling head parts, has avoided manufacturing the difficult problem of large specification worm couple necessary in large specification rotary table; Workpiece maintains static, milling head parts along with the rotating mode of pillar parts avoided in large gear processing in rotary table worm couple shock loading greatly, easily wear and tear, be difficult for a pinpoint difficult problem.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram that the utility model is provided with workpiece;
Fig. 2 is the structural representation of the utility model circular guideway parts;
Fig. 3 is that the utility model circular guideway parts are along the partial sectional view of worm shaft place plane;
Fig. 4 is the structural representation of the utility model pillar parts;
Fig. 5 is the structural representation that the utility model is equipped with the milling head parts of cutter;
Fig. 6 is the A-A cutaway view in Fig. 5.
Graphical indicia: 1, milling head support; 2, circular lifting column; 3, workpiece; 4, work mounting s; 5, work piece platform; 6, studdle; 7, Integral pedestal; 8, horizontal slide; 9, revolving dial; 10, servomotor I; 11, decelerator I; 12, active worm screw; 13, intermediate gearing; 14, driven worm screw; 15, servomotor II; 16, decelerator II; 17, ball screw assembly, II; 18, worm gear; 19, the gap oil cylinder that disappears; 20, servomotor III; 21, decelerator III; 22, ball screw assembly, III; 23, nut seat; 24, Upright post base; 25, directed briquetting; 26, positioning adapter; 27, spindle motor; 28, decelerator IV; 29, milling head casing; 30, cutter shaft; 31, cutter; 32, intermediate propeller shaft; 33, travelling gear.
The specific embodiment
Shown in figure, the specific embodiment is as follows:
A kind of ring gear moulding tooth milling machine, comprise circular guideway parts, pillar parts, milling head parts, milling head support 1, have the round-disk shape workpiece platform 5 of centre bore, studdle 6 and work mounting s 4, described circular guideway parts are provided with the revolving dial 9 of guide rail by upper surface, horizontal slide 8, Integral pedestal 7, and for providing the drive unit of power, revolving dial 9 and horizontal slide 8 form, revolving dial 9 is arranged on Integral pedestal 7, the center superposition of the centre of gyration of revolving dial 9 and Integral pedestal 7, horizontal slide 8 is in mating connection with the guide rail of revolving dial 9 upper surfaces, pillar parts is fixed on horizontal slide 8, milling head parts are fixed on the upper end of pillar parts by milling head support 1, work piece platform 5 is fixed on the top of the studdle 6 of Integral pedestal 7 circle distribution, milling head parts are through the centre bore in work piece platform 5, work mounting s 4 radially slides and is arranged on work piece platform 5 upper surfaces, work mounting s 4 is a plurality of and is circumferentially uniformly distributed along work piece platform 5.
Described drive unit adopts servomotor I10 to drive worm and gear auxiliary driving by decelerator I11.
Described pillar parts comprises Upright post base 24, on outer circumference surface, offer the circular lifting column 2 of gathering sill, positioning adapter 26, directed briquetting 25, ball screw assembly, III22, nut seat 23, decelerator III21 and servomotor III20, circular lifting column 2 is slidably mounted in the positioning adapter 26 in Upright post base 24, on the sidewall of Upright post base 24 and positioning adapter 26, offer locating hole, directed briquetting 25 is fixed in locating hole, and be equipped with the gathering sill on circular lifting column 2, servomotor III20 is fixed on Upright post base 24, and drive ball screw assembly, III22 to rotate by decelerator III21, ball screw assembly, III22 drives nut seat 23 motions that are fixed on circular lifting column 2.
Described milling head parts comprise milling head casing 29, cutter 31, cutter shaft 30, decelerator IV28, spindle motor 27 and the transmission mechanism being comprised of a plurality of intermediate propeller shafts 32 and a plurality of travelling gear 33, described spindle motor 27 drives transmission mechanism by decelerator IV28, and transmission mechanism drives cutter shaft 30 band cutter 31 work.
The center of described milling head support 1 is provided with rotating central hole, and milling head parts are arranged in rotating central hole.
The ball screw assembly, II17 that described horizontal slide 8 is connected by its bottom drives and slides along described guide rail, and the decelerator II16 that ball screw assembly, II17 is driven by servomotor II15 drives.
Described worm couple comprises active worm screw 12, driven worm screw 14, worm gear 18, the bevel gear set being arranged on Integral pedestal 7 and the gap oil cylinder 19 that disappears, worm gear 18 is arranged on revolving dial 9 bottoms, its rotation overlaps with the axis of rotation of revolving dial 9, initiatively worm screw 12 and driven worm screw 14 all mesh with worm gear, initiatively mesh by bevel gear set and driven worm screw 14 one end worm screw 12 one end, the other end of driven worm screw 14 is connected with the gap oil cylinder 19 that disappears, and initiatively the other end of worm screw 12 is connected with the output shaft of decelerator I11.
On described work mounting s 4, be provided with the fixture for fixation workpiece.
Be illustrated in figure 1 a kind of numerical control ring gear moulding tooth milling machine, comprise circular guideway parts, pillar parts, milling head parts, milling head support 1, work piece platform 5, studdle 6, work mounting s 4.Pillar parts is fixed on the horizontal slide 8 of circular guideway parts, and the size according to wanting processing work diameter, moves at directions X along guide rail.Milling head parts are fixed on the top of the circular lifting column 2 of lifting column parts by milling head mounting bracket 1, along with the lifting of circular lifting column 2 is moved along Y-direction.Milling head parts can turn round in the installing hole of milling head support 1, and during processing helical teeth, milling head parts are adjusted its angle of revolution according to the size of workpiece helical angle.The circular guideway platform 9 of circular guideway parts around its centre of gyration revolution, completes a minute tooth motion with pillar parts, milling head parts.Work piece platform 5 is fixed with one by the Integral pedestal 7 of studdle 6 and circular guideway parts.Work piece platform 5 is installed work mounting s 4 above, can select the work mounting s 4 that length is different, and by fixture, workpiece is fixed on work mounting s 4 according to the difference of workpiece 3 specifications, and work mounting s 4 can moving radially along work piece platform 5.
As shown in Figure 2 and Figure 3, circular guideway parts comprise Integral pedestal 7, revolving dial 9, main worm and gear 12, from worm and gear 14, worm gear 18, the gap that disappears oil cylinder 19, intermediate gearing 13, horizontal slide 8, ball wire bar pair II17, decelerator II16 and servomotor II15.Outside six the uniform polished surfaces of Integral pedestal 7 are for mounting platform pillar 6, and the inside of Integral pedestal 7 is provided with circular guideway, for bearing and turning guide rail platform 9.The circular guideway of circular guideway platform 9 and Integral pedestal 7 inside is concentric, and the two connects by rolling bearing system or hydrostatic bearing.Main worm and gear 12 and be installed on Integral pedestal 7 from worm and gear 14, main worm and gear 12 and driven worm and gear 14 share a worm gear 18, and this worm gear is installed on the bottom of revolving dial 9, and and it is coaxial.From other one end of worm and gear 14, the gap oil cylinder 19 that disappears is housed.Servomotor I10 is connected with main worm and gear 12 by decelerator I11.Horizontal slide 8 is installed on the guide rail of revolving dial 9, and servomotor II15, decelerator II16, ball wire bar pair II17 are installed on revolving dial 9.
As shown in Figure 4, pillar parts comprises Upright post base 24, circular lifting column 2, positioning adapter 26, directed briquetting 25, ball screw assembly, III22, nut seat 23, decelerator III21, servomotor III20.Positioning adapter 26 is installed on the inside of Upright post base 24, and circular lifting column 2 is installed on positioning adapter 26 inside, and the two is coaxial.In order to increase rigidity, circular lifting column 2 is designed to double-decker, and surrounding is processed with spigot surface and is the gathering sill that two vertical planes form.Directed briquetting 25 is fixed in Upright post base lateral groove, and the spigot surface of circular lifting column 2 coordinates.The leading screw of described ball screw assembly, III22 is arranged on Upright post base side, and the screw of ball screw assembly, III22 is connected with circular lifting column 2 by nut seat 23.Servomotor III20 is connected with ball screw assembly, III22 by decelerator III21.
As shown in Figure 5, Figure 6, milling head parts comprise milling head casing 29, cutter shaft 30, intermediate propeller shaft 32, travelling gear 33, decelerator IV28, spindle motor 27.Cutter shaft 30, intermediate propeller shaft 32, a plurality of travelling gear 33 are installed on milling head casing 29 inside, and spindle motor 27 is installed on milling head casing 29 tops by decelerator IV28, and cutter 31 is installed in cutter shaft 30.Motor power in this embodiment is delivered to cutter shaft by two driving-chains.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.

Claims (8)

1. a ring gear moulding tooth milling machine, it is characterized in that: by circular guideway parts, pillar parts, milling head parts, milling head support (1), have the round-disk shape workpiece platform (5) of centre bore, studdle (6) and work mounting s (4), described circular guideway parts are provided with the revolving dial (9) of guide rail by upper surface, horizontal slide (8), Integral pedestal (7), and be that revolving dial (9) and horizontal slide (8) provide the drive unit of power to form, revolving dial (9) is arranged on Integral pedestal (7), the center superposition of the centre of gyration of revolving dial (9) and Integral pedestal (7), horizontal slide (8) is in mating connection with the guide rail of revolving dial (9) upper surface, pillar parts is fixed on horizontal slide (8), milling head parts are fixed on the upper end of pillar parts by milling head support (1), work piece platform (5) is fixed on the top of the studdle (6) of Integral pedestal (7) circle distribution, milling head parts are through the centre bore in work piece platform (5), work mounting s (4) radially slides and is arranged on work piece platform (5) upper surface, work mounting s (4) is a plurality of and is circumferentially uniformly distributed along work piece platform (5).
2. a kind of ring gear moulding tooth milling machine according to claim 1, is characterized in that: described drive unit adopts servomotor I(10) by decelerator I(11) auxiliary driving of driving worm and gear.
3. a kind of ring gear moulding tooth milling machine according to claim 1, it is characterized in that: described pillar parts comprises Upright post base (24), on outer circumference surface, offer the circular lifting column (2) of gathering sill, positioning adapter (26), directed briquetting (25), ball screw assembly, III(22), nut seat (23), decelerator III(21) and servomotor III(20), circular lifting column (2) is slidably mounted in the positioning adapter (26) in Upright post base (24), on the sidewall of Upright post base (24) and positioning adapter (26), offer locating hole, directed briquetting (25) is fixed in locating hole, and coordinate with the gathering sill on circular lifting column (2), servomotor III(20) be fixed on Upright post base (24), and by decelerator III(21) drive ball screw assembly, III(22) rotate, ball screw assembly, III(22) drive nut seat (23) motion being fixed on circular lifting column (2).
4. a kind of ring gear moulding tooth milling machine according to claim 1, it is characterized in that: described milling head parts comprise milling head casing (29), cutter (31), cutter shaft (30), decelerator IV(28), spindle motor (27) and the transmission mechanism that formed by a plurality of intermediate propeller shafts (32) and a plurality of travelling gear (33), described spindle motor (27) is by decelerator IV(28) drive transmission mechanism, transmission mechanism to drive cutter shaft (30) band cutter (31) work.
5. a kind of ring gear moulding tooth milling machine according to claim 1, is characterized in that: the center of described milling head support (1) is provided with rotating central hole, and milling head parts are arranged in rotating central hole.
6. a kind of ring gear moulding tooth milling machine according to claim 1, it is characterized in that: the ball screw assembly, II(17 that described horizontal slide (8) is connected by its bottom) drive along described guide rail and slide, ball screw assembly, II(17) by servomotor II(15) the decelerator II(16 that drives) drive.
7. a kind of ring gear moulding tooth milling machine according to claim 2, it is characterized in that: described worm couple comprises the active worm screw (12) being arranged on Integral pedestal (7), driven worm screw (14), worm gear (18), bevel gear set and the gap oil cylinder (19) that disappears, worm gear (18) is arranged on revolving dial (9) bottom, its rotation overlaps with the axis of rotation of revolving dial (9), initiatively worm screw (12) and driven worm screw (14) all mesh with worm gear, initiatively one end of worm screw (12) is by one end engagement of bevel gear set and driven worm screw (14), the other end of driven worm screw (14) is connected with the gap oil cylinder (19) that disappears, the initiatively other end and decelerator I(11 of worm screw (12)) output shaft be connected.
8. a kind of ring gear moulding tooth milling machine according to claim 1, is characterized in that: described work mounting s is provided with the fixture for fixation workpiece on (4).
CN201320473245.7U 2013-08-05 2013-08-05 Forming gear milling machine for inner gear rings Withdrawn - After Issue CN203390326U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320473245.7U CN203390326U (en) 2013-08-05 2013-08-05 Forming gear milling machine for inner gear rings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320473245.7U CN203390326U (en) 2013-08-05 2013-08-05 Forming gear milling machine for inner gear rings

Publications (1)

Publication Number Publication Date
CN203390326U true CN203390326U (en) 2014-01-15

Family

ID=49901888

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320473245.7U Withdrawn - After Issue CN203390326U (en) 2013-08-05 2013-08-05 Forming gear milling machine for inner gear rings

Country Status (1)

Country Link
CN (1) CN203390326U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103433568A (en) * 2013-08-05 2013-12-11 河南科技大学 Gear milling machine for forming inner gear ring
CN103878646A (en) * 2014-03-12 2014-06-25 滕天阳 Built-in machine tool
CN103962651A (en) * 2014-04-30 2014-08-06 齐重数控装备股份有限公司 Method for adjusting alignment accuracy of heavy vertical gear milling machine tool
CN111843559A (en) * 2020-09-08 2020-10-30 崔福才 Positioning tool for radially drilling inner gear ring

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103433568A (en) * 2013-08-05 2013-12-11 河南科技大学 Gear milling machine for forming inner gear ring
CN103878646A (en) * 2014-03-12 2014-06-25 滕天阳 Built-in machine tool
CN105252347A (en) * 2014-03-12 2016-01-20 滕天阳 Built-in machine tool
CN105382554A (en) * 2014-03-12 2016-03-09 滕天阳 Built-in machine tool
CN103878646B (en) * 2014-03-12 2016-07-06 滕天阳 Built-in lathe
CN105252347B (en) * 2014-03-12 2017-04-12 滕天阳 Built-in machine tool
CN103962651A (en) * 2014-04-30 2014-08-06 齐重数控装备股份有限公司 Method for adjusting alignment accuracy of heavy vertical gear milling machine tool
CN111843559A (en) * 2020-09-08 2020-10-30 崔福才 Positioning tool for radially drilling inner gear ring
CN111843559B (en) * 2020-09-08 2021-12-14 江阴市万众精密机械有限公司 Positioning tool for radially drilling inner gear ring

Similar Documents

Publication Publication Date Title
CN103433568B (en) The shaping tooth milling machine of a kind of ring gear
CN205218598U (en) Brill of adjustable inclination and circumference graduation, reaming clamping device
CN203390326U (en) Forming gear milling machine for inner gear rings
CN202411844U (en) Rotary table mechanism for combined boring and milling machine tool of gantry drill
CN104259538B (en) Special machine tool for milling grooves on cylindrical surfaces of annular parts
CN203044951U (en) Multi-shaft bidirectional processing numerical control drilling machine tool
CN101829930B (en) Engine cylinder head numerical control machine for floating ship
CN103273142A (en) Composite efficient double-end-face chamfering machine of internal and external teeth of polar coordinates
CN201179603Y (en) Horizontal and vertical boring-mill processing center
CN206047264U (en) A kind of chain digital control gear hobbing machine
CN105619084A (en) Multi-station synchronous machining equipment for bearings
CN103143789B (en) A kind of gear cutting machine
CN103331557A (en) L-shaped welding positioner
CN202825239U (en) Work piece supporting device and machine tool
CN210361982U (en) Rotary workbench and vertical engraving machine
CN205313634U (en) Slewing bearing quenches and uses horizontal frock clamp
CN201669609U (en) Vertical grinder
CN103481069A (en) Rotary workbench and upright type turning and milling composite machine tool
CN202861549U (en) Numerically-controlled gear hobbing machine
CN204843183U (en) Complicated curved surface wire -electrode cutting diaxon numerical control revolving platform
CN201871947U (en) Large precision numerically-controlled rotary worktable
CN203184769U (en) Gear cutting machine
CN205237551U (en) Two external tooth wheel sets crack closed static pressure supporting rotary worktable that disappears
CN102825312B (en) Pipe annular seam back chipping and edge milling machine
CN202804376U (en) Precise forming numerical control four-axis linkage inner cyclone milling machine

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
RGAV Abandon patent right to avoid regrant
AV01 Patent right actively abandoned

Granted publication date: 20140115

Effective date of abandoning: 20150909