CN213795185U - Efficient turning and milling composite machine tool - Google Patents

Efficient turning and milling composite machine tool Download PDF

Info

Publication number
CN213795185U
CN213795185U CN202022654720.3U CN202022654720U CN213795185U CN 213795185 U CN213795185 U CN 213795185U CN 202022654720 U CN202022654720 U CN 202022654720U CN 213795185 U CN213795185 U CN 213795185U
Authority
CN
China
Prior art keywords
milling
tool
turning
seat
axis driving
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.)
Active
Application number
CN202022654720.3U
Other languages
Chinese (zh)
Inventor
余志超
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.)
Dongguan Huijie Cnc Lathe Co ltd
Original Assignee
Dongguan Huijie Cnc Lathe 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 Dongguan Huijie Cnc Lathe Co ltd filed Critical Dongguan Huijie Cnc Lathe Co ltd
Priority to CN202022654720.3U priority Critical patent/CN213795185U/en
Application granted granted Critical
Publication of CN213795185U publication Critical patent/CN213795185U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Auxiliary Devices For Machine Tools (AREA)

Abstract

The utility model relates to the technical field of machine tools, in particular to a high-efficiency turning and milling composite machine tool, which comprises a machine table, a machine shell, a main shaft device and a turning and milling composite tool magazine; the compound tool magazine of turnning and milling is including removing the seat, Z axle drive arrangement, X axle drive arrangement, Y axle actuating mechanism, power tool turret and a plurality of row sword, X axle drive arrangement is perpendicular with Y axle actuating mechanism, the power tool turret includes the lift seat, the tool turret motor, tool turret seat and a plurality of power tool bit, the board is equipped with the waste residue and collects the chamber, the compound tool magazine of turnning and milling is equipped with guard flap, guard flap installs in the casing, guard flap's bottom is connected with oblique baffle, oblique baffle is located the below of tool turret seat, the bottom and the waste residue of oblique baffle are collected the feed inlet in chamber and are connected. The utility model discloses automatic collect the waste residue, turn-milling is compound in an organic whole, can carry out different processing in the direction of difference to the work piece after the clamping, need not to carry out clamping many times to the work piece, has improved the precision and the production efficiency of processing the work piece, has reduced artificial intensity of labour.

Description

Efficient turning and milling composite machine tool
Technical Field
The utility model belongs to the technical field of the lathe technique and specifically relates to indicate an efficient turn-milling compound machine tool.
Background
The lathe is a machine tool for turning a rotating workpiece by using a turning tool, and the milling machine is a machine tool for milling the workpiece by using a milling cutter. The existing processing machine tool generally only has a single function of turning tool processing, milling tool processing or drilling tool processing, a plurality of processes of turning, milling and drilling are generally needed for processing complex workpieces, the workpieces need to be placed on different machine tools for processing, the workpieces need to be assembled and disassembled for a plurality of times, the precision requirements among turning surfaces, milling surfaces and hole site centers are difficult to guarantee, the processing precision of the workpieces is reduced, the labor intensity of workers is high, and the production efficiency is low. Therefore, the drawbacks are obvious, and a solution is needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide an efficient turn-milling composite machine tool.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a high-efficiency turning and milling composite machine tool comprises a machine table, a machine shell arranged on the machine table, a spindle device arranged on the machine table and a turning and milling composite tool magazine arranged on the machine table, wherein the turning and milling composite tool magazine is obliquely arranged relative to the machine table, and the spindle device and the turning and milling composite tool magazine are both positioned in the machine shell; the turning and milling combined tool magazine comprises a moving seat, a Z-axis driving device, an X-axis driving device, a Y-axis driving mechanism, a power tool turret and a plurality of row tools, wherein the row tools are arranged along the length direction of the moving seat, the Z-axis driving device is arranged on a machine table, the X-axis driving device is arranged at the output end of the Z-axis driving device, the moving seat is arranged at the output end of the X-axis driving device, the Y-axis driving mechanism is arranged on the moving seat, the Y-axis driving mechanism is used for driving the power tool turret to move along the Y axis of the moving seat, the X-axis driving device is perpendicular to the Y-axis driving mechanism, the power tool turret comprises a lifting seat in driving connection with the output end of the Y-axis driving mechanism, a tool turret motor arranged on the lifting seat, a tool turret seat in rotational connection with the lifting seat and a plurality of power tool bits arranged in the circumferential direction of the tool turret seat, the tool motor is used for driving the tool turret to rotate, the machine table is provided with a waste residue collecting cavity, the waste residue collecting cavity is located below the main shaft device and the turning and milling composite tool magazine, one side of the turning and milling composite tool magazine is provided with a protective baffle, the protective baffle is installed in the machine shell, the bottom end of the protective baffle is connected with an inclined guide plate, the inclined guide plate is located below the tool tower seat, and the bottom end of the inclined guide plate is connected with a feeding hole of the waste residue collecting cavity.
Furthermore, one side of the protective baffle is connected with a material baffle plate, and the output end of the main shaft device penetrates through the material baffle plate.
Furthermore, the plurality of power tool bits are respectively milling tool bits, turning tool bits, drilling tool bits, boring tool bits and tapping tool bits.
Furthermore, the spindle device comprises a bearing seat arranged on the machine table, a spindle rotatably connected to the bearing seat, a material clamping head arranged at one end of the spindle, and a spindle motor arranged on the machine table or the bearing seat, wherein the spindle motor is used for driving the spindle to rotate.
Furthermore, one end of the main shaft close to the main shaft motor is fixedly connected with a brake pad, and the bearing seat is provided with a brake for braking the brake pad.
Further, the board is provided with filter screen and cistern, the liquid outlet of waste residue collection chamber is through filter screen and cistern intercommunication, the board has been installed and has been supplied the turn-milling liquid device, supply the turn-milling liquid device to be used for supplying the turn-milling liquid in the cistern to power tool bit or/and row sword.
Furthermore, the machine table is provided with a fan for radiating the turning and milling liquid supply device.
Furthermore, a waste gas filter and an air extractor are arranged in the casing, and an air inlet of the waste gas filter is communicated with an air outlet end of the air extractor.
The utility model has the advantages that: in practical application, a workpiece is clamped on a main shaft device, the main shaft device can drive the workpiece to rotate, the power tool turret is driven to process the workpiece or any row of cutters is driven to process the workpiece through the cooperative matching of a Z-axis driving device and an X-axis driving device according to actual turning and milling requirements, and a Y-axis driving mechanism can drive the power tool turret to move along a Y axis so as to adjust the position of the power tool turret and further realize Y-axis interpolation; because X axle drive arrangement sets up with Y axle actuating mechanism is perpendicular, so only need Y axle actuating mechanism drive power tool turret to remove and can realize Y axle interpolation, compare in prior art need X axle drive arrangement and Y axle actuating mechanism cooperate the side in coordination to realize Y axle interpolation, the utility model discloses an it is efficient. The turret motor drives the turret seat to rotate, and the rotating turret seat drives all power tool bits to rotate so as to realize tool changing and have high tool changing efficiency; owing to be provided with guard flap and oblique baffle, so can be blockked by guard flap to the produced waste residue of work piece processing, and the waste residue that is blockked can drop to oblique baffle on, the waste residue collects the intracavity along oblique baffle landing waste residue to realize the automatic collection of waste residue, avoid needing artifical clearance because of the waste residue splashes everywhere, reduced cost of labor and intensity of labour, the security is good. The utility model has the advantages of simple and compact structure, automatic collection waste residue, compound in an organic whole with the turnning and milling, the production and the use cost of equipment have been reduced, the occupation space of lathe has been reduced, the type of power tool bit can be set for the installation according to the effect requirement, be applicable to the car of multiclass work piece, mill, bore, attack processing such as tooth, the dismouting is convenient with the maintenance, can be to the work piece after the clamping different processing of going on different directions (axial and radial), can satisfy the processing of different demands, therefore, the clothes hanger is strong in practicability, need not to carry out clamping or clamping to the work piece many times and process on the lathe of different functions, the precision and the production efficiency of processing work piece have been improved, artificial intensity of labour have been reduced.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of the three-dimensional structure of the hidden housing, the liquid tank and the milling device for supplying vehicle of the present invention.
Fig. 3 is a schematic view of the three-dimensional structure of the present invention at another viewing angle after hiding the housing, the liquid tank and the milling device.
Description of reference numerals:
1. a machine platform; 2. a housing; 3. a spindle device; 31. a bearing seat; 32. a main shaft; 33. clamping a stub bar; 34. a spindle motor; 35. a brake pad; 36. a brake; 4. turning and milling a composite tool magazine; 41. a movable seat; 42. a Z-axis drive device; 43. an X-axis drive device; 44. a Y-axis drive mechanism; 45. a power tool turret; 46. arranging cutters; 51. a lifting seat; 52. a turret motor; 53. a tool turret seat; 54. a powered cutter head; 6. a waste residue collection chamber; 7. a protective baffle; 8. an inclined guide plate; 9. a striker plate; 91. a filter screen; 92. a liquid bath; 93. a device for supplying milling liquid; 94. a fan.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
As shown in fig. 1 to 3, the utility model provides a high-efficiency turning and milling composite machine tool, which comprises a machine table 1, a machine shell 2 installed on the machine table 1, a spindle device 3 installed on the machine table 1, and a turning and milling composite tool magazine 4 installed on the machine table 1, wherein the turning and milling composite tool magazine 4 is obliquely arranged relative to the machine table 1, and the spindle device 3 and the turning and milling composite tool magazine 4 are both located in the machine shell 2; the turning and milling compound tool magazine 4 comprises a moving seat 41, a Z-axis driving device 42, an X-axis driving device 43, a Y-axis driving mechanism 44, a power tool turret 45 and a plurality of row tools 46, wherein the plurality of row tools 46 are arranged along the length direction of the moving seat 41, the Z-axis driving device 42 is installed on the machine table 1, the X-axis driving device 43 is installed at the output end of the Z-axis driving device 42, the moving seat 41 is installed at the output end of the X-axis driving device 43, the Y-axis driving mechanism 44 is installed on the moving seat 41, the Y-axis driving mechanism 44 is used for driving the power tool turret 45 to move along the Y-axis of the moving seat 41, the X-axis driving device 43 and the Y-axis driving mechanism 44 are vertically arranged, the power tool turret 45 comprises a lifting seat 51 in driving connection with the output end of the Y-axis driving mechanism 44, a tool motor 52 installed on the lifting seat 51, a tool turret 53 in rotational connection with the lifting seat 51 and a plurality of power tool bits 54 installed on the circumference of the tool turret 53, the tool turret motor 52 is used for driving the tool turret base 53 to rotate, the machine table 1 is provided with a waste residue collecting cavity 6, the waste residue collecting cavity 6 is located below the main shaft device 3 and the turning and milling composite tool magazine 4, one side of the turning and milling composite tool magazine 4 is provided with a protective baffle 7, the protective baffle 7 is installed in the machine shell 2, the bottom end of the protective baffle 7 is connected with an inclined guide plate 8, the inclined guide plate 8 is located below the tool turret base 53, and the bottom end of the inclined guide plate 8 is connected with a feed inlet of the waste residue collecting cavity 6. Preferably, the plurality of power bits 54 are milling bits, turning bits, drilling bits, boring bits, and tapping bits, respectively; when a workpiece needs to be milled, a milling cutter head is selected, the milling cutter head rotates to mill the workpiece, and the use of other cutter heads is the same, so that the description is omitted.
In practical application, a workpiece is clamped on the spindle device 3, the spindle device 3 can drive the workpiece to rotate, the power tool turret 45 is driven to process the workpiece or any row of cutters 46 are driven to process the workpiece through the cooperation of the Z-axis driving device 42 and the X-axis driving device 43 according to actual turning and milling requirements, and the Y-axis driving mechanism 44 can drive the power tool turret 45 to move along the Y axis so as to adjust the position of the power tool turret 45, so that Y-axis interpolation is realized; because X axle drive arrangement 43 sets up with Y axle actuating mechanism 44 is perpendicular, so only need Y axle actuating mechanism 44 drive power tool turret 45 to remove and can realize the interpolation of Y axle, compare and need X axle drive arrangement 43 and Y axle actuating mechanism 44 to cooperate the side in coordination among the prior art and can realize the interpolation of Y axle, the utility model discloses an it is efficient. The turret motor 52 drives the turret seat 53 to rotate, and the rotating turret seat 53 drives all the power tool bits 54 to rotate so as to realize tool changing and have high tool changing efficiency; owing to be provided with guard flap 7 and oblique baffle 8, so can be blockked by guard flap 7 to the produced waste residue of work piece processing, the waste residue that is blockked can drop to oblique baffle 8 on, in the waste residue collects the chamber 6 along oblique 8 landing waste residues of baffle to realize the automatic collection of waste residue, avoid needing artifical clearance because of the waste residue splashes everywhere, reduced cost of labor and intensity of labour, the security is good. The utility model has the advantages of simple and compact structure, automatic collection waste residue, compound in an organic whole with the turnning and milling, the production and the use cost of equipment have been reduced, the occupation space of lathe has been reduced, the type of power tool bit 54 can be set for the installation according to the effect requirement, be applicable to the car of multiclass work piece, mill, bore, the boring, attack processing such as tooth, the dismouting is convenient with the maintenance, can be to the processing that the work piece after the clamping is different on different directions (axial and radial), can satisfy the processing of different demands, therefore, the clothes hanger is strong in practicability, need not to carry out clamping or clamping to the work piece many times and process on the lathe of different functions, the precision and the production efficiency of processing work piece have been improved, artificial intensity of labour has been reduced.
In this embodiment, one side of the protective baffle 7 is connected with a striker plate 9, and the output end of the spindle device 3 penetrates through the striker plate 9. The striker plate 9 plays the effect that blocks to the waste residue, avoids the waste residue in disorder to splash, and the waste residue is collected 6 collection waste residue of being convenient for.
In this embodiment, the spindle device 3 includes a bearing seat 31 installed on the machine table 1, a spindle 32 rotatably connected to the bearing seat 31, a material clamping head 33 installed at one end of the spindle 32, and a spindle motor 34 installed on the machine table 1 or the bearing seat 31, where the spindle motor 34 is used to drive the spindle 32 to rotate, and the material clamping head 33 penetrates through the striker plate 9. In practical application, the material clamping head 33 is used for clamping a workpiece, the spindle motor 34 drives the spindle 32 to rotate, and the rotating spindle 32 drives the material clamping head 33 and the workpiece to rotate; directly adopt spindle motor 34 drive main shaft 32 to rotate, adopt belt drive structure among the prior art relatively, the utility model has the advantages of simple structure, efficiency is higher, and the graduation is more accurate.
In this embodiment, a brake disc 35 is fixedly connected to one end of the spindle 32 close to the spindle motor 34, and a brake 36 for braking the brake disc 35 is attached to the bearing housing 31. In practical application, when the main shaft 32 needs to be braked, the brake 36 brakes the brake pads 35, so that the brake pads 35 and the main shaft 32 stop rotating, the main shaft 32 is prevented from rotating due to inertia, and the stability of the main shaft 32 is improved.
In this embodiment, the machine table 1 is provided with a filter screen 91 and a liquid tank 92, the liquid outlet of the waste residue collection cavity 6 is communicated with the liquid tank 92 through the filter screen 91, the machine table 1 is provided with a turn-milling liquid supply device 93, and the turn-milling liquid supply device 93 is used for supplying the turn-milling liquid in the liquid tank 92 to the power cutter head 54 or/and the row cutter 46.
In the turning and milling process, the turning and milling liquid supply device 93 supplies the turning and milling liquid in the liquid tank 92 to the workpiece, the power tool bit 54 or/and the gang tool 46 clamped by the clamping head 33, waste residues and the turning and milling liquid in the turning and milling process can fall into the waste residue collecting cavity 6 to be collected, the turning and milling liquid in the waste residue collecting cavity 6 is filtered by the filter screen 91 and then flows back to the liquid tank 92, and therefore the turning and milling waste is collected and the filtered turning and milling liquid is recycled.
In this embodiment, the machine 1 is provided with the fan 94 for dissipating heat of the turn-milling liquid supply device 93, and the fan 94 dissipates heat of the turn-milling liquid supply device 93, so that the turn-milling liquid supply device 93 is prevented from working at a high temperature for a long time, and the service life of the turn-milling liquid supply device is prolonged.
In this embodiment, a waste gas filter and an air extractor are installed in the casing 2, and an air inlet of the waste gas filter is communicated with an air outlet end of the air extractor. When turning the work piece, the air extractor extracts the gas in the casing 2, so that the gas in the casing 2 is discharged to the environment after passing through the air extractor and the waste gas filter in sequence, and the waste gas filter filters the gas to protect the environment.
All the technical features in the embodiment can be freely combined according to actual needs.
The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.

Claims (8)

1. The utility model provides a compound lathe of efficient turnning and milling which characterized in that: the turning and milling combined tool magazine is obliquely arranged relative to the machine table, and the spindle device and the turning and milling combined tool magazine are both positioned in the machine shell; the turning and milling combined tool magazine comprises a moving seat, a Z-axis driving device, an X-axis driving device, a Y-axis driving mechanism, a power tool turret and a plurality of row tools, wherein the row tools are arranged along the length direction of the moving seat, the Z-axis driving device is arranged on a machine table, the X-axis driving device is arranged at the output end of the Z-axis driving device, the moving seat is arranged at the output end of the X-axis driving device, the Y-axis driving mechanism is arranged on the moving seat, the Y-axis driving mechanism is used for driving the power tool turret to move along the Y axis of the moving seat, the X-axis driving device is perpendicular to the Y-axis driving mechanism, the power tool turret comprises a lifting seat in driving connection with the output end of the Y-axis driving mechanism, a tool turret motor arranged on the lifting seat, a tool turret seat in rotational connection with the lifting seat and a plurality of power tool bits arranged in the circumferential direction of the tool turret seat, the tool motor is used for driving the tool turret to rotate, the machine table is provided with a waste residue collecting cavity, the waste residue collecting cavity is located below the main shaft device and the turning and milling composite tool magazine, one side of the turning and milling composite tool magazine is provided with a protective baffle, the protective baffle is installed in the machine shell, the bottom end of the protective baffle is connected with an inclined guide plate, the inclined guide plate is located below the tool tower seat, and the bottom end of the inclined guide plate is connected with a feeding hole of the waste residue collecting cavity.
2. A high-efficiency turning and milling compound machine tool according to claim 1, characterized in that: one side of the protective baffle is connected with a material baffle plate, and the output end of the main shaft device penetrates through the material baffle plate.
3. A high-efficiency turning and milling compound machine tool according to claim 1, characterized in that: the plurality of power tool bits are respectively milling tool bits, turning tool bits, drilling tool bits, boring tool bits and tapping tool bits.
4. A high-efficiency turning and milling compound machine tool according to claim 1, characterized in that: the spindle device comprises a bearing seat arranged on the machine table, a spindle rotatably connected to the bearing seat, a material clamping head arranged at one end of the spindle, and a spindle motor arranged on the machine table or the bearing seat, wherein the spindle motor is used for driving the spindle to rotate.
5. A high-efficiency turn-milling compound machine tool as claimed in claim 4, characterized in that: and one end of the main shaft close to the main shaft motor is fixedly connected with a brake pad, and the bearing seat is provided with a brake for braking the brake pad.
6. A high-efficiency turning and milling compound machine tool according to claim 1, characterized in that: the board is provided with filter screen and cistern, the liquid outlet in waste residue collection chamber is through filter screen and cistern intercommunication, the board has been installed and has been supplied the turn-milling liquid device, the turn-milling liquid device of supplying is used for supplying the turn-milling liquid in the cistern to power tool bit or row sword.
7. A high-efficiency turning and milling compound machine tool according to claim 6, characterized in that: the machine table is provided with a fan used for radiating the turning and milling device.
8. A high-efficiency turning and milling compound machine tool according to claim 1, characterized in that: and a waste gas filter and an air extractor are arranged in the shell, and an air inlet of the waste gas filter is communicated with an air outlet end of the air extractor.
CN202022654720.3U 2020-11-16 2020-11-16 Efficient turning and milling composite machine tool Active CN213795185U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022654720.3U CN213795185U (en) 2020-11-16 2020-11-16 Efficient turning and milling composite machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022654720.3U CN213795185U (en) 2020-11-16 2020-11-16 Efficient turning and milling composite machine tool

Publications (1)

Publication Number Publication Date
CN213795185U true CN213795185U (en) 2021-07-27

Family

ID=76934727

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022654720.3U Active CN213795185U (en) 2020-11-16 2020-11-16 Efficient turning and milling composite machine tool

Country Status (1)

Country Link
CN (1) CN213795185U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114406793A (en) * 2022-01-17 2022-04-29 苏州立岩机械科技有限公司 Turning and milling composite machine tool protective outer cover system convenient to install
CN114918669A (en) * 2022-06-08 2022-08-19 中山长准机电有限公司 Industrial small-sized nine-shaft five-linkage turning and milling composite machine tool
CN115008204A (en) * 2022-07-01 2022-09-06 深圳市旭晖数控设备有限公司 Five-axis turning and milling combined machining center machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114406793A (en) * 2022-01-17 2022-04-29 苏州立岩机械科技有限公司 Turning and milling composite machine tool protective outer cover system convenient to install
CN114918669A (en) * 2022-06-08 2022-08-19 中山长准机电有限公司 Industrial small-sized nine-shaft five-linkage turning and milling composite machine tool
CN115008204A (en) * 2022-07-01 2022-09-06 深圳市旭晖数控设备有限公司 Five-axis turning and milling combined machining center machine

Similar Documents

Publication Publication Date Title
CN213795185U (en) Efficient turning and milling composite machine tool
CN201776492U (en) Environment-protecting numerically-controlled engraving and milling machine
CN107671673B (en) Tool grinding machine equipment
CN216503818U (en) A milling flutes device for processing of car semi axle sleeve
CN203636358U (en) Seven-axle turning-milling combined machining system
CN211192193U (en) Reduce flat machine of milling that piece splashes
CN109894870A (en) Turnning and milling combined numerically controlled machine
CN211277638U (en) Processing drilling machine of automobile brake pad
CN213795179U (en) Turning and milling compound machine
CN215880950U (en) Efficient cooling device for machine tool
CN106181382B (en) A kind of turning-milling complex processing lathe
CN216297998U (en) Horizontal numerical control U drilling machine tool
CN212420415U (en) Milling machine workbench convenient to clean
CN110936163B (en) Cogging method for machining gear by numerical control machine tool
CN210189343U (en) Cooling liquid recycling device for four-axis grinding machine
CN210877707U (en) Horizontal U drilling machine
CN113618482A (en) Numerical control machine tool capable of preventing cutting scraps from splashing and working method thereof
CN218053355U (en) Cutter assembly and double-cutter glass ceramic engraving system
CN220481086U (en) Protective baffle for numerical control machine tool
CN210938138U (en) Seven duplex position mechanisms for machining center
CN221337662U (en) Equipment for efficiently machining cylinder body gear opening surface
CN114211025A (en) A numerical control multiaspect mills machine for parts machining
CN216939761U (en) Special numerical control equipment for machining long-shaft parts
CN110625421A (en) Pull rod structure with air outlet hole in center
CN217595975U (en) Boring machine with dust removing mechanism for metal processing

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant