CN107984242B - Digit control machine tool is with heat dissipation base - Google Patents
Digit control machine tool is with heat dissipation base Download PDFInfo
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- CN107984242B CN107984242B CN201711388176.9A CN201711388176A CN107984242B CN 107984242 B CN107984242 B CN 107984242B CN 201711388176 A CN201711388176 A CN 201711388176A CN 107984242 B CN107984242 B CN 107984242B
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- fixedly connected
- shell
- heat dissipation
- machine tool
- heat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/015—Frames, beds, pillars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
- B23Q11/128—Arrangements for cooling or lubricating parts of the machine for cooling only for cooling frame parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a radiating base for a numerical control machine tool, which comprises a base shell, wherein the top of the base shell is fixedly connected with a machine tool mounting plate, the top of the machine tool mounting plate is fixedly connected with the machine tool shell, and five hot flow holes are formed in the machine tool mounting plate at equal intervals. According to the invention, through the mutual matching of the heat conductor, the heat guide hole, the top radiating pipe, the side radiating pipes, the radiator, the motor rotating shaft, the driving conical gear, the first radiating shaft, the first radiating fan, the transmission conical gear, the second radiating shaft, the second radiating fan, the bottom radiating holes and the heat conducting ring, the base for the numerical control machine tool has a radiating function, so that heat generated in the numerical control machine tool is timely dissipated, the phenomenon of heat accumulation in the machine tool can not occur any more, a transmission assembly in the numerical control machine tool can not be thermally deformed any more, the service life of each transmission part is prolonged, and the processing precision of the numerical control machine tool is also improved.
Description
Technical Field
The invention relates to the technical field of numerical control machines, in particular to a heat dissipation base for a numerical control machine.
Background
The numerical control machines being digitally controlledMachine toolIs a kind of installed programControl systemThe automated machine tool of (1). The control system is capable of logically processing and decoding a program defined by a control code or other symbolic instructions, represented by coded numbers, which are input to the numerical control device via the information carrier. After operation, the numerical control device sends out various control signals to control the action of the machine tool, and the parts are automatically machined according to the shape and the size required by the drawing.
Digit control machine tool base can make the digit control machine tool place subaerial that stabilizes more, and traditional digit control machine tool base does not all possess radiating function, the digit control machine tool is at the in-process of processing the work piece, partly is because the heat that generates of the mutual friction between the cutter of lathe and the work piece, partly is the heat that takes place because the inside transmission friction of digit control machine tool spindle drive's gear box in addition, if the base of digit control machine tool does not possess the heat dissipation function, will make the too much gathering of these heats at the inside of digit control machine tool, make the inside temperature of digit control machine tool constantly rise, it warp to lead to some accurate spare parts of digit control machine tool inside to be heated the inflation, the wearing and tearing at transmission position have been accelerated, thereby the transmission precision.
Disclosure of Invention
The invention aims to provide a heat dissipation base for a numerical control machine tool, which has the advantage of heat dissipation and solves the problem that the traditional base for the numerical control machine tool cannot dissipate heat.
In order to achieve the purpose, the invention provides the following technical scheme: a heat dissipation base for a numerical control machine tool comprises a base shell, wherein a machine tool mounting plate is fixedly connected to the top of the base shell, the top of the machine tool mounting plate is fixedly connected with the machine tool shell, five heat flow holes are formed in the machine tool mounting plate at equal intervals, a heat conductor is fixedly connected to the inner wall of each heat flow hole, a heat guide hole is formed in the top of the base shell and corresponds to the position of the five heat flow holes, a top heat dissipation tube is fixedly connected to the top of the inner wall of the base shell and corresponds to the position of the heat guide hole, side heat dissipation tubes are fixedly connected to the left side and the right side of the base shell, one end of each side heat dissipation tube penetrates through the base shell and extends into the base shell to be fixedly connected with the side heat dissipation tube, a radiator is fixedly connected to the inner wall of each side heat, the bottom of the inner wall of the mounting groove is fixedly connected with a motor inside the transmission shell, the output shaft of the motor is fixedly connected with a motor rotating shaft, one end of the motor rotating shaft, far away from the motor, is fixedly connected with a driving conical gear, the top of the driving conical gear is fixedly connected with a first heat dissipation shaft, one end of the first heat dissipation shaft, far away from the driving conical gear, penetrates through the top of the inner wall of the transmission shell and extends to the inside of the top heat dissipation pipe to be fixedly connected with a first heat dissipation fan, the left side and the right side of the driving conical gear are both in transmission connection with the transmission conical gear inside the transmission shell, one side of the transmission conical gear, far away from the driving conical gear, is fixedly connected with a second heat dissipation shaft, one end of the second heat dissipation shaft, far away from the transmission conical gear, penetrates through the, the bottom of base shell inner wall all has seted up bottom louvre and is located the left and right sides of transmission shell, the inner wall fixedly connected with heat conduction ring of bottom louvre, the equal fixedly connected with ground support block of the left and right sides of base shell bottom.
Preferably, the heat conductor comprises a support frame, the left side and the right side of the support frame are respectively and fixedly connected with the left side and the right side of the inner wall of the heat flow hole, and the surface of the support frame is fixedly connected with a heat conducting fin.
Preferably, the radiator includes radiator shell, the equal fixedly connected with heat dissipation connecting block in the left and right sides of radiator shell top and bottom, radiator shell is through the inner wall fixed connection of four heat dissipation connecting blocks and side cooling tube, the air vent has been seted up on radiator shell's surface, radiator shell's inside is provided with the radiator-grid.
Preferably, the equal fixedly connected with heat conduction fixer in the left and right sides of heat conduction ring, the heat conduction ring passes through the inner wall fixed connection of heat conduction fixer and bottom louvre, the heat conduction fixer includes the heat conduction fixed block, the fixed surface of heat conduction fixed block and heat conduction ring is connected, one side fixedly connected with heat conduction connecting block of heat conduction ring is kept away from to the heat conduction fixed block, the heat conduction connecting block is kept away from the inner wall fixed connection of one side of heat conduction fixed block and bottom louvre.
Preferably, the top of the transmission housing and a position corresponding to the first heat dissipation shaft are fixedly connected with a first bearing, and the first heat dissipation shaft is movably connected with the transmission housing through the first bearing.
Preferably, the left side and the right side of the transmission shell and the position corresponding to the second heat dissipation shaft are both fixedly connected with second bearings, and the second heat dissipation shaft is movably connected with the transmission shell through the second bearings.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the mutual matching of the heat conductor, the heat guide hole, the top radiating pipe, the side radiating pipes, the radiator, the motor rotating shaft, the driving conical gear, the first radiating shaft, the first radiating fan, the transmission conical gear, the second radiating shaft, the second radiating fan, the bottom radiating holes and the heat conducting ring, the base for the numerical control machine tool effectively has a radiating function, the heat generated in the numerical control machine tool can be timely dissipated, the phenomenon of heat accumulation in the numerical control machine tool can not occur any more, the transmission assembly in the numerical control machine tool can not deform by heating any more, the service life of each transmission part is prolonged, and the processing precision of the numerical control machine tool is also improved.
2. The ground support block is arranged to play a role in stabilizing and supporting the base shell, so that the base shell is stably connected with the ground, the heat conduction ring is more conveniently fixed and installed by the heat conduction fixer, the first bearing is arranged to play a role in reducing friction when the first heat dissipation shaft rotates, and the second bearing is arranged to play a role in reducing friction when the second heat dissipation shaft rotates.
Drawings
FIG. 1 is a structural cross-sectional view of a front view of the present invention;
FIG. 2 is a sectional view of the heat sink of the present invention;
FIG. 3 is a schematic top view of a thermally conductive ring according to the present invention;
FIG. 4 is an enlarged view of a portion of A-A of FIG. 1 according to the present invention.
In the figure: the heat dissipation device comprises a base shell 1, a machine tool mounting plate 2, a machine tool shell 3, a heat flow hole 4, a heat conductor 5, a support frame 51, a heat conduction sheet 52, a heat guide hole 6, a top heat dissipation pipe 7, a side heat dissipation pipe 8, a heat dissipation pipe 9, a heat dissipation device shell 91, a heat dissipation connecting block 92, a vent hole 93, a heat dissipation net 94, a mounting groove 10, a transmission shell 11, a motor 12, a motor rotating shaft 13, a driving bevel gear 14, a first heat dissipation shaft 15, a first heat dissipation fan 16, a transmission bevel gear 17, a second heat dissipation shaft 18, a second heat dissipation fan 19, a heat dissipation hole 20 at the bottom, a heat conduction ring 21, a ground supporting block 22, a heat conduction fixer 23, a heat conduction fixing block 231, a heat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a heat dissipation base for a numerical control machine tool comprises a base housing 1, a machine tool mounting plate 2 is fixedly connected to the top of the base housing 1, a machine tool housing 3 is fixedly connected to the top of the machine tool mounting plate 2, five heat flow holes 4 are equidistantly formed in the machine tool mounting plate 2, a heat conductor 5 is fixedly connected to the inner wall of each heat flow hole 4, the heat conductor 5 comprises a support frame 51, the left side and the right side of the support frame 51 are respectively and fixedly connected to the left side and the right side of the inner wall of each heat flow hole 4, a heat conduction sheet 52 is fixedly connected to the surface of the support frame 51, heat conduction holes 6 are formed in the top of the base housing 1 and correspond to the positions of the five heat flow holes 4, a top portion 7 is fixedly connected to the top of the inner wall of the base housing 1 and correspond to the positions of the heat conduction holes 6, lateral heat, the inner wall of the side radiating pipe 8 is fixedly connected with a radiator 9, the radiator 9 comprises a radiator shell 91, the left side and the right side of the top and the bottom of the radiator shell 91 are fixedly connected with radiating connecting blocks 92, the radiator shell 91 is fixedly connected with the inner wall of the side radiating pipe 8 through four radiating connecting blocks 92, the surface of the radiator shell 91 is provided with vent holes 93, a radiating net 94 is arranged inside the radiator shell 91, the bottom of the inner wall of the base shell 1 is provided with a mounting groove 10, the bottom of the inner wall of the base shell 1 is fixedly connected with a transmission shell 11 corresponding to the position of the mounting groove 10, the bottom of the inner wall of the mounting groove 10 is fixedly connected with a motor 12 inside the transmission shell 11, a motor rotating shaft 13 is fixedly connected on an output shaft of the motor 12, one end of the motor rotating shaft 13 far away from the motor 12, one end of the first heat dissipation shaft 15, which is far away from the driving bevel gear 14, penetrates through the top of the inner wall of the transmission shell 11 and extends to the inside of the top heat dissipation pipe 7, the first heat dissipation fan 16 is fixedly connected with the top of the transmission shell 11 and extends to the inside of the top heat dissipation pipe 7, the first heat dissipation shaft 15 is movably connected with the transmission shell 11 through the first bearing 24, the first bearing 24 is arranged to reduce the friction force when the first heat dissipation shaft 15 rotates, the transmission bevel gear 17 is in transmission connection with the left side and the right side of the driving bevel gear 14 and is positioned inside the transmission shell 11, the second heat dissipation shaft 18 is fixedly connected with one side of the transmission bevel gear 17, which is far away from the driving bevel gear 17, the one end of the second heat dissipation shaft 18, which is far away from the driving bevel gear 17, penetrates through the inner wall of the transmission shell 11 and extends to the outside of the second heat dissipation fan 19, the positions of the left side and the right side of the transmission shell 11 corresponding to the second heat dissipation shaft 18 are fixedly connected with second bearings 25, the second heat dissipation shaft 18 is movably connected with the transmission shell 11 through the second bearings 25, the effect of reducing friction force when the second heat dissipation shaft 18 rotates is achieved through the arrangement of the second bearings 25, bottom heat dissipation holes 20 are formed in the bottom of the inner wall of the base shell 1 and the left side and the right side of the transmission shell 11, heat conduction rings 21 are fixedly connected with the inner walls of the bottom heat dissipation holes 20 through the heat conduction fasteners 23, the heat conduction fasteners 23 comprise heat conduction fixing blocks 231, the heat conduction fixing blocks 231 are fixedly connected with the surfaces of the heat conduction rings 21, one sides of the heat conduction fixing blocks 231, which are far away from the heat conduction rings 21, are fixedly connected with heat conduction connecting blocks 232, one sides of the heat conduction connecting blocks 232, which are far away from the heat conduction fixing blocks 231, are fixedly connected with the inner walls of the, the heat conduction fixer 23 is arranged to more conveniently fix and install the heat conduction ring 21, the ground support blocks 22 are fixedly connected to the left side and the right side of the bottom of the base shell 1, the base shell 1 is stably connected with the ground by arranging the ground support blocks 22, the heat conductor 5, the heat guide hole 6, the top heat dissipation pipe 7, the side heat dissipation pipes 8, the heat radiator 9, the motor 12, the motor rotating shaft 13, the driving bevel gear 14, the first heat dissipation shaft 15, the first heat dissipation fan 16, the driving bevel gear 17, the second heat dissipation shaft 18, the second heat dissipation fan 19, the bottom heat dissipation holes 20 and the heat conduction ring 21 are mutually matched, so that the base for the numerical control machine tool effectively has a heat dissipation function, the heat generated in the numerical control machine tool can be dissipated in time, and the phenomenon of heat accumulation can not occur in the numerical control machine tool any more, the transmission assembly in the numerical control machine tool can not be deformed by heat any more, so that the service life of each transmission part is prolonged, and the processing precision of the numerical control machine tool is also improved.
During the use, when the inside production of heat of digit control machine tool, through starting motor 12, drive first heat dissipation axle 15 and second heat dissipation axle 18 simultaneously through motor 12 and rotate to make first radiator fan 16 and second radiator fan 19 rotate the heat extraction, carry out the conduction heat dissipation through heat conductor 5, radiator 9 and heat conduction ring 21 respectively at the in-process of heat extraction.
In summary, the following steps: this heat dissipation base for digit control machine tool through setting up heat conductor 5, hot guide hole 6, top cooling tube 7, side cooling tube 8, radiator 9, motor 12, motor shaft 13, drive conical gear 14, first heat dissipation axle 15, first radiator fan 16, transmission conical gear 17, second heat dissipation axle 18, second radiator fan 19, mutually supporting between bottom louvre 20 and the heat-conducting ring 21, solved the unable radiating problem of base for traditional digit control machine tool.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a digit control machine tool is with heat dissipation base, includes base shell (1), its characterized in that: the top fixedly connected with lathe mounting panel (2) of base shell (1), the top fixedly connected with lathe shell (3) of lathe mounting panel (2), five discharge orifices (4) have been seted up to the inside equidistance of lathe mounting panel (2), the inner wall fixedly connected with heat conductor (5) of discharge orifices (4), the top of base shell (1) and the position that corresponds five discharge orifices (4) have seted up hot guide hole (6), the top of base shell (1) inner wall and the position fixedly connected with top cooling tube (7) that corresponds hot guide hole (6), the equal fixedly connected with side cooling tube (8) of both sides about base shell (1), the one end of side cooling tube (8) runs through base shell (1) and extends to its inside and fixed connection, the inner wall fixedly connected with radiator (9) of side cooling tube (8), the bottom of the inner wall of the base shell (1) is provided with a mounting groove (10), the bottom of the inner wall of the base shell (1) corresponds to the position of the mounting groove (10) and is fixedly connected with a transmission shell (11), the bottom of the inner wall of the mounting groove (10) is positioned in the transmission shell (11) and is fixedly connected with a motor (12), an output shaft of the motor (12) is fixedly connected with a motor rotating shaft (13), one end, far away from the motor (12), of the motor rotating shaft (13) is fixedly connected with a driving bevel gear (14), the top of the driving bevel gear (14) is fixedly connected with a first heat dissipation shaft (15), one end, far away from the driving bevel gear (14), of the first heat dissipation shaft (15) penetrates through the top of the inner wall of the transmission shell (11) and extends to the inner part of the top heat dissipation pipe (7), the left and right sides of drive conical gear (14) and the equal transmission in inside that is located transmission shell (11) are connected with transmission conical gear (17), one side fixedly connected with second heat dissipation axle (18) of drive conical gear (14) are kept away from in transmission conical gear (17), bottom louvre (20) have all been seted up to the one end that transmission conical gear (17) were kept away from in second heat dissipation axle (18) runs through the inner wall of transmission shell (11) and extends to its outside fixedly connected with second radiator fan (19), the bottom of base shell (1) inner wall and the left and right sides that is located transmission shell (11), the inner wall fixedly connected with heat conduction ring (21) of bottom louvre (20), the equal fixedly connected with ground support piece (22) in the left and right sides of base shell (1) bottom.
2. The heat dissipation base for the numerical control machine tool according to claim 1, characterized in that: the heat conductor (5) comprises a support frame (51), the left side and the right side of the support frame (51) are fixedly connected with the left side and the right side of the inner wall of the hot flow hole (4) respectively, and the surface of the support frame (51) is fixedly connected with heat conducting fins (52).
3. The heat dissipation base for the numerical control machine tool according to claim 1, characterized in that: radiator (9) include radiator shell (91), the equal fixedly connected with heat dissipation connecting block (92) of the left and right sides of radiator shell (91) top and bottom, the inner wall fixed connection of radiator shell (91) through four heat dissipation connecting block (92) and side cooling tube (8), air vent (93) have been seted up on the surface of radiator shell (91), the inside of radiator shell (91) is provided with radiator-grid (94).
4. The heat dissipation base for the numerical control machine tool according to claim 1, characterized in that: the equal fixedly connected with heat conduction fixer (23) of the left and right sides of heat conduction ring (21), the inner wall fixed connection of heat conduction ring (21) through heat conduction fixer (23) and bottom louvre (20), heat conduction fixer (23) are including heat conduction fixed block (231), the fixed surface of heat conduction fixed block (231) and heat conduction ring (21) is connected, one side fixedly connected with heat conduction connecting block (232) of heat conduction ring (21) are kept away from in heat conduction fixed block (231), the inner wall fixed connection of one side and bottom louvre (20) of heat conduction fixed block (231) is kept away from in heat conduction connecting block (232).
5. The heat dissipation base for the numerical control machine tool according to claim 1, characterized in that: the top of the transmission shell (11) is fixedly connected with a first bearing (24) in a position corresponding to the first heat dissipation shaft (15), and the first heat dissipation shaft (15) is movably connected with the transmission shell (11) through the first bearing (24).
6. The heat dissipation base for the numerical control machine tool according to claim 1, characterized in that: the left side and the right side of the transmission shell (11) and the positions corresponding to the second heat dissipation shafts (18) are fixedly connected with second bearings (25), and the second heat dissipation shafts (18) are movably connected with the transmission shell (11) through the second bearings (25).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711388176.9A CN107984242B (en) | 2017-12-20 | 2017-12-20 | Digit control machine tool is with heat dissipation base |
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| CN201711388176.9A CN107984242B (en) | 2017-12-20 | 2017-12-20 | Digit control machine tool is with heat dissipation base |
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| CN107984242A CN107984242A (en) | 2018-05-04 |
| CN107984242B true CN107984242B (en) | 2019-12-27 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108515354A (en) * | 2018-07-08 | 2018-09-11 | 江苏威佳机械制造有限公司 | A kind of lathe portable base |
| CN108857571A (en) * | 2018-08-22 | 2018-11-23 | 遵义西密机电实业有限公司 | A kind of numerically-controlled machine tool |
| CN109605060A (en) * | 2018-11-28 | 2019-04-12 | 周五莲 | A kind of numerically-controlled machine tool heat dissipation base |
| CN110064942A (en) * | 2019-04-25 | 2019-07-30 | 罗瑞琪 | A kind of numerically-controlled machine tool with heat dissipation base |
| CN110977498B (en) * | 2019-11-01 | 2023-02-03 | 江苏中智自动化股份有限公司 | Five-axis double-Z-axis four-station numerical control machine tool |
| CN111300082B (en) * | 2020-03-16 | 2022-01-07 | 济南国柱机械有限公司 | Milling machine spindle |
| CN112192315A (en) * | 2020-10-19 | 2021-01-08 | 杭州悟伦机械科技有限公司 | Numerical control machine tool heat dissipation equipment capable of descaling main shaft |
| CN112605711A (en) * | 2021-01-21 | 2021-04-06 | 深圳市德彩福智能科技有限公司 | Utilize and filter back waste liquid to lubricated refrigerated heat abstractor of numerical control lathe guide rail |
| CN113172468A (en) * | 2021-04-22 | 2021-07-27 | 江苏申泰机床有限公司 | High radiating digit control machine tool |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5137172B2 (en) * | 2006-08-03 | 2013-02-06 | 株式会社ソディック | Electric discharge machine and method for correcting thermal displacement of electric discharge machine |
| JP5449086B2 (en) * | 2010-08-11 | 2014-03-19 | 三菱重工業株式会社 | Machine Tools |
| CN203409517U (en) * | 2013-07-11 | 2014-01-29 | 山东正昊机械设备制造有限公司 | Precise oblique trough type bed pedestal for machine tool |
| CN203526964U (en) * | 2013-09-03 | 2014-04-09 | 湖南量翰机床制造有限公司 | Numerical control machine base |
| CN203542063U (en) * | 2013-11-28 | 2014-04-16 | 浙江国展科技有限公司 | Horizontal tapping machine bed |
| CN204248416U (en) * | 2014-11-16 | 2015-04-08 | 长葛市瑞昌机械有限公司 | The base of heat radiation lathe |
| CN104759943B (en) * | 2015-03-30 | 2017-04-05 | 北京工业大学 | The apparatus and method of detection gear pattern and performance |
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Effective date of registration: 20210127 Address after: 313100 Changxing County Huzhou town industrial concentration area, Huzhou, Zhejiang Patentee after: SunOne intelligent equipment (Changxing) Co.,Ltd. Address before: 325600 No. 222, Weiwu Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province (inside Delixi Group Co., Ltd.) Patentee before: SHUNENG NUMERICAL CONTROL MACHINE TOOL Co.,Ltd. |
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