CN113182909B - Motor shell machining device and machining process thereof - Google Patents
Motor shell machining device and machining process thereof Download PDFInfo
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- CN113182909B CN113182909B CN202110514371.1A CN202110514371A CN113182909B CN 113182909 B CN113182909 B CN 113182909B CN 202110514371 A CN202110514371 A CN 202110514371A CN 113182909 B CN113182909 B CN 113182909B
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- motor shell
- rotary table
- servo
- clamping
- motor
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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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
- B23B31/302—Hydraulic equipment, e.g. pistons, valves, rotary joints
-
- 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
-
- 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
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
- Machine Tool Positioning Apparatuses (AREA)
Abstract
The invention discloses a machining device for a motor shell, which comprises a machine tool platen, a tool bottom plate, a servo four-axis rotary table and a rotary table clamping tailstock, wherein the servo four-axis rotary table and the rotary table clamping tailstock are arranged on the tool bottom plate; hydraulic chuck is installed to servo four-axis revolving stage's inside wall, installs soft claw on the hydraulic chuck, and hydraulic chuck periphery is provided with a plurality of limit stop, and the motor casing processing technology who uses above-mentioned processingequipment includes the step: the motor shell is transferred, positioned and clamped, rotationally processed and unloaded, an inner hole of the motor shell is used as a reference, one end of the motor shell is tensioned, the other end of the motor shell is compressed and clamped, one-time clamping of a workpiece is achieved, then the servo four-axis rotary table is instructed to rotate the workpiece to an angle position needing to be processed for numerical control processing, and the processing efficiency of the motor shell is improved.
Description
Technical Field
The invention relates to the technical field of motor shell machining, in particular to a machining device and a machining process of a motor shell.
Background
In the process of machining the existing motor shell, the procedures of plane milling, drilling, tapping and the like need to be carried out on the side wall and the end face of the motor shell. Because these manufacturing processes usually involve each surface of the motor casing, in the prior art, usually, a positioning block is used to fix a part of the motor casing, and after a specific surface is finished, the motor casing is turned over to other surfaces for processing. On one hand, the motor shell needs to be positioned and adjusted for many times; on the other hand, the efficiency of machining the motor housing is also reduced.
Disclosure of Invention
Therefore, the invention provides a machining device and a machining process of a motor shell, which aim to overcome the defects in the prior art.
A machining device for a motor shell comprises a machine tool platen, a tool bottom plate arranged above the machine tool platen, a servo four-axis rotary table and a rotary table clamping tailstock, wherein the servo four-axis rotary table and the rotary table clamping tailstock are arranged on the tool bottom plate in a facing mode;
hydraulic chuck is installed to servo four-axis revolving stage's inside wall, the soft claw is installed to annular array on hydraulic chuck's the jack catch, hydraulic chuck is outlying annular array is provided with a plurality of limit stop on servo four-axis revolving stage's the inside wall, and motor casing's one end outer lane can block to be established a plurality of between the limit stop, motor casing's inner circle can be by a plurality of soft claw rises and tightly.
Preferably, a hydraulic cylinder is installed on the linear slide rail through a connecting plate, a top rod of the hydraulic cylinder is connected with the rotary table tailstock, and the hydraulic cylinder drives the rotary table tailstock to slide along the linear slide rail.
Preferably, the lower surface of the tooling bottom plate is provided with a sliding chute, a sliding connection plate is slidably mounted inside the sliding chute, and the front end of the sliding connection plate is connected with a linear sliding seat sliding above the tooling bottom plate.
Preferably, the linear sliding base comprises a bottom surface sliding base with rollers arranged at the lower part, a sliding base sliding laterally is arranged above the bottom surface sliding base, and the motor shell is arranged on the sliding base.
A processing technology of a motor shell applies the processing device of the motor shell to process the motor shell, and comprises the following steps:
s100, transferring a motor shell: selecting a bottom foot mounting surface of a motor shell to place on a linear sliding seat, and pushing the linear sliding seat to a position between a servo four-axis rotary table and a rotary table clamping tailstock;
s200, positioning and clamping: a hydraulic chuck on one side of a servo four-axis rotary table is used for tensioning one end of an opening of a motor shell, a rotary table clamping tailstock is used for jacking the other end of the motor shell, and a linear sliding seat below the motor shell is withdrawn after positioning and clamping of the motor shell is completed;
s300, rotating: the servo four-axis turntable drives each surface to be processed of the motor shell to sequentially rotate to the horizontal position of the top surface and correspondingly process the surface, and the method comprises the following steps of:
s301, milling and drilling a bottom corner mounting surface of the motor shell;
s302, finishing machining of a threaded hole in the plane of the motor wiring door;
s303, drilling the nameplate and hoisting the threaded hole;
s304, drilling and tapping the connecting and mounting holes of the end covers of the two end faces of the motor shell;
s400, unloading: and rotating the motor shell to the bottom foot mounting surface of the motor shell downwards, loosening to position and clamp the motor shell, and discharging the motor shell to the upper end of the linear sliding seat and withdrawing the machining station.
Preferably, in S300, each of the surfaces to be machined of the motor housing is rotated to the top surface position to be horizontally angle-corrected once.
Preferably, the step S304 is performed while blowing chips into the drilled hole by using a chip blowing device.
Preferably, a numerical control clamp is adopted to clamp the outer diameter of the motor shell blank and place the motor shell blank on the linear sliding base.
The invention has the following advantages:
compared with the existing processing device and processing technology of the motor shell, the invention has the advantages that: according to the motor shell machining device, the inner hole of the motor shell is used as a reference, one end of the motor shell is tensioned, the other end of the motor shell is compressed and clamped, one-time clamping of a workpiece is achieved, then the workpiece is rotated to an angle position needing to be machined through a servo four-axis rotary table instructed by a PCL control system of a machine tool to carry out numerical control machining, and machining efficiency of the motor shell is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the motor housing clamping structure of the present invention;
FIG. 3 is a schematic view of the present invention shown in FIG. 1 with the motor housing removed;
fig. 4 is a schematic structural view of fig. 2 with the motor housing removed.
In the figure:
1-a machine tool bedplate; 2-servo four-axis rotary table; 3-a linear slide; 4-a linear slide; 5-rotary table tailstock; 6-a slewing support bearing; 7-clamping the disc; 8-a hydraulic chuck; 9-soft claws; 10-motor housing; 11-limit stop; 12-a tooling bottom plate; 13-a hydraulic cylinder; 14-a chute; 15-a sliding connection plate; 16-a chip blowing device;
301-a roller; 302-a bottom surface slide; 303-sliding base.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, the present invention provides a motor housing machining apparatus that can improve the efficiency of the turning process of the motor housing. Specifically, the method comprises the following steps:
the machining device of the motor shell comprises a machine tool bedplate 1, a tooling bottom plate 12 arranged above the machine tool bedplate 1, a servo four-axis rotary table 2 and a rotary table clamping tailstock which are arranged on the tooling bottom plate 12 in a facing mode, and a linear sliding seat 3 which is arranged on the tooling bottom plate 12 in a sliding mode is arranged between the servo four-axis rotary table 2 and the rotary table clamping tailstock. Specifically, the method comprises the following steps:
the lower surface of the tooling bottom plate 12 is provided with a sliding groove 14, a sliding connection plate 15 is arranged inside the sliding groove 14 in a sliding manner, and the front end of the sliding connection plate 15 is connected with the linear sliding seat 3 sliding above the tooling bottom plate 12.
The linear sliding base 3 comprises a bottom sliding base 302 with a roller 301 arranged at the lower part, a sliding base 303 sliding laterally is arranged above the bottom sliding base 302, and the motor shell 10 is placed on the sliding base 303.
The rotary table clamping tailstock comprises a linear slide rail 4 and a rotary table tailstock 5 which is slidably mounted on the linear slide rail 4, a hydraulic cylinder 13 is mounted on the linear slide rail 4 through a connecting plate, an ejector rod of the hydraulic cylinder 13 is connected with the rotary table tailstock 5, and the hydraulic cylinder 13 drives the rotary table tailstock 5 to slide along the linear slide rail 4.
And the rotary table tail seat 5 is connected with a clamping disc 7 through a rotary supporting bearing 6.
A processing technology of a motor shell applies the processing device of the motor shell to process the motor shell, and comprises the following steps:
s100, transferring a motor shell: selecting a bottom foot mounting surface of a motor shell 10 to place on a linear sliding seat 3, and pushing the linear sliding seat 3 to a position between a servo four-axis rotary table 2 and a rotary table clamping tail seat; specifically, the method comprises the following steps:
a numerically controlled jig (not shown) is used to grip the outer diameter of the motor housing 10 blank and place it on the linear slide 3. The motor housing 10 to be machined is placed with its foot mounting surface facing downwards on the linear slide 3. For some motor housings 10 without a foot mounting surface, a surface of the side wall of the motor housing 10 with a larger plane may be selected as a reference surface to be placed on the linear slide 3.
Then, the slide link plate 15 is pushed along the slide groove 14, and the linear slider 3 connected to the tip of the slide link plate 15 is slid along the surface of the tooling bottom plate 12 between the servo four-axis turntable 2 and the turntable clamping tailstock. The central axis of the motor shell 10 is overlapped with the central axis between the servo four-axis rotary table 2 and the rotary table clamping tailstock as much as possible.
S200, positioning and clamping: the opening end of the motor shell 10 is tensioned by a hydraulic chuck 8 at one side of a servo four-axis rotary table 2, the other end of the motor shell 10 is tightly jacked by a rotary table clamping tailstock, and the motor shell 10 is withdrawn from the linear sliding seat 3 below the motor shell 10 after positioning and clamping are finished; specifically, the method comprises the following steps:
the slide base 303 is slid toward the side end with respect to the bottom surface slide base 302, and the outer ring of the opening at one end of the motor case 10 placed on the slide base 303 is engaged between the plurality of limit stoppers 11 on the servo four-axis turn table 2 side. And then, the hydraulic chuck 8 is started, the soft claws 9 arranged on the plurality of claws of the hydraulic chuck 8 are expanded outwards, the inner ring of the opening end of the motor shell 10 is tensioned, and the motor shell 10 can be stably fixed at one end of the servo four-axis turntable 2.
And a hydraulic cylinder 13 is driven, the hydraulic cylinder 13 drives the rotary table tailstock 5 connected with the hydraulic cylinder 13 to move to one side of the servo four-axis rotary table 2 along the linear slide rail 4, and the rotary table tailstock 5 is tightly pressed on the other end of the motor shell 10 through a clamping disc 7 connected with a rotary supporting bearing 6. This achieves a positional clamping of both ends of the entire motor housing 10.
The opposite extension of the sliding web 15 thus allows the linear slide 3 to be withdrawn from underneath the positioned motor housing 10, avoiding interference of the linear slide 3 underneath during the subsequent rotational machining of the motor housing 10.
S300, rotating: the servo four-axis turntable 2 drives each surface to be processed of the motor shell 10 to rotate to the horizontal position of the top surface in sequence, and the processing is correspondingly carried out. Each of the faces to be processed of the motor case 10 is rotated to the top face position to be corrected in the horizontal angle once. The angle correction here can be performed by means of conventional probe correction. Namely, an infrared measuring head is called in a tool magazine by a machine tool numerical control system, and the workpiece blank machining allowance indexing hole is subjected to locating, aligning and centering, so that the workpiece machining size is accurate.
The method specifically comprises the following processing steps:
s301, milling and drilling the bottom corner mounting surface of the motor shell 10;
s302, finishing machining of a threaded hole in the plane of the motor wiring door;
s303, drilling the nameplate and hoisting the threaded hole;
s304, drilling and tapping the connecting and mounting holes of the end covers of the two end faces of the motor shell 10; the drill hole is simultaneously blown by the chip blowing device 16.
S400, unloading: rotating the motor housing 10 to the bottom mounting surface downwards, loosening the positioning and clamping of the motor housing 10, discharging the motor housing 10 to the upper end of the linear sliding seat 3 and withdrawing the machining station.
Compared with the existing processing device and processing technology of the motor shell, the device of the invention has the advantages that:
according to the invention, the inner hole of the motor shell 10 is taken as a reference, one end of the motor shell 10 is tensioned, the other end of the motor shell is compressed and clamped, one-time clamping of a workpiece is realized, and then the workpiece is rotated to an angle position needing to be processed through a servo four-axis turntable instructed by a PCL control system of a machine tool to carry out numerical control processing, so that the processing efficiency of the motor shell 10 is improved.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (5)
1. A processing device of a motor shell is characterized in that: the automatic clamping device comprises a machine tool platen (1), a tool baseplate (12) arranged above the machine tool platen (1), a servo four-axis rotary table (2) and a rotary table clamping tailstock which are arranged on the tool baseplate (12) in a facing manner, wherein a linear sliding seat (3) which is arranged on the tool baseplate (12) in a sliding manner is arranged between the servo four-axis rotary table (2) and the rotary table clamping tailstock, the rotary table clamping tailstock comprises a linear sliding rail (4) and a rotary table tailstock (5) which is arranged on the linear sliding rail (4) in a sliding manner, and a clamping disc (7) is connected onto the rotary table tailstock (5) through a rotary supporting bearing (6);
a hydraulic chuck (8) is installed on the inner side wall of the servo four-axis rotary table (2), soft claws (9) are installed on jaws of the hydraulic chuck (8) in an annular array mode, a plurality of limit stops (11) are arranged on the inner side wall, on the periphery of the hydraulic chuck (8), of the servo four-axis rotary table (2) in an annular array mode, the outer ring of one end of a motor shell (10) can be clamped between the limit stops (11), and the inner ring of the motor shell (10) can be tensioned by the soft claws (9);
a hydraulic cylinder (13) is mounted on the linear sliding rail (4) through a connecting plate, a mandril of the hydraulic cylinder (13) is connected with the rotary table tailstock (5), and the hydraulic cylinder (13) drives the rotary table tailstock (5) to slide along the linear sliding rail (4);
the lower surface of the tooling bottom plate (12) is provided with a sliding chute (14), a sliding connecting plate (15) is slidably mounted inside the sliding chute (14), and the front end of the sliding connecting plate (15) is connected with a linear sliding seat (3) which slides above the tooling bottom plate (12);
the linear sliding base (3) comprises a bottom surface sliding base (302) with rollers (301) arranged at the lower part, a sliding base (303) sliding in the lateral direction is arranged above the bottom surface sliding base (302), and the motor shell (10) is placed on the sliding base (303).
2. A processing technology of a motor shell is characterized in that: the machining of the motor housing using the machining apparatus for the motor housing according to claim 1, comprising the steps of:
s100, transferring a motor shell: selecting a bottom foot mounting surface of a motor shell (10) to place on a linear sliding seat (3), and pushing the linear sliding seat (3) to a position between a servo four-axis rotary table (2) and a rotary table clamping tailstock;
s200, positioning and clamping: a hydraulic chuck (8) on one side of a servo four-axis rotary table (2) is used for tensioning one end of an opening of a motor shell (10), a rotary table clamping tailstock is used for jacking the other end of the motor shell (10), and the linear sliding seat (3) below the motor shell (10) is withdrawn after positioning and clamping the motor shell (10) is completed;
s300, rotating: the servo four-axis turntable (2) drives each surface to be processed of the motor shell (10) to rotate to the horizontal position of the top surface in sequence and process correspondingly, and the method comprises the following steps:
s301, milling and drilling a bottom corner mounting surface of the motor shell (10) are completed;
s302, finishing machining of a threaded hole in the plane of the motor wiring door;
s303, drilling the nameplate and hoisting the threaded hole;
s304, drilling and tapping the connecting and mounting holes of the end covers of the two end faces of the motor shell (10);
s400, unloading: and rotating the motor shell (10) to the bottom foot mounting surface of the motor shell downwards, loosening the positioning and clamping of the motor shell (10), and discharging the motor shell (10) to the upper end of the linear sliding seat (3) and withdrawing the machining station.
3. The process of manufacturing a motor housing according to claim 2, wherein: in the step S300, each of the surfaces to be machined of the motor housing (10) is rotated to the top surface position and is corrected by a horizontal angle once.
4. The process for manufacturing a motor housing according to claim 2, wherein: the step S304 is performed while the drill hole is being blown with a chip blowing device (16).
5. The process for manufacturing a motor housing according to claim 2, wherein: and clamping the outer diameter of the blank of the motor shell (10) by adopting a numerical control clamp and placing the blank on the linear sliding seat (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110514371.1A CN113182909B (en) | 2021-05-08 | 2021-05-08 | Motor shell machining device and machining process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110514371.1A CN113182909B (en) | 2021-05-08 | 2021-05-08 | Motor shell machining device and machining process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113182909A CN113182909A (en) | 2021-07-30 |
| CN113182909B true CN113182909B (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110514371.1A Active CN113182909B (en) | 2021-05-08 | 2021-05-08 | Motor shell machining device and machining process thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115351568A (en) * | 2022-08-30 | 2022-11-18 | 安徽朗轶工业自动化系统有限公司 | Drilling, tapping and milling processing technology and positioning device for motor base |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3174009B2 (en) * | 1996-12-27 | 2001-06-11 | 昭和アルミニウム株式会社 | Motor case manufacturing method |
| WO2001087537A1 (en) * | 2000-05-19 | 2001-11-22 | Kataoka Machine Tools Mfg. Co., Ltd. | Work holding device, milling machine, and long work machining method |
| DE50212129D1 (en) * | 2001-05-17 | 2008-06-05 | Chiron Werke Gmbh | Machine tool for machining a rod-shaped workpiece |
| CN105563167A (en) * | 2014-10-10 | 2016-05-11 | 青岛三利智能动力有限公司 | Motor shell four-axis linkage drilling and tapping tool |
| CN106670506B (en) * | 2017-01-18 | 2018-09-25 | 浙江台兴机电科技有限公司 | Motor housing Special Purpose Machine for Processing |
| CN107214531A (en) * | 2017-07-14 | 2017-09-29 | 荣成市恒力电机厂 | A kind of motor case bore hole clamping apparatus |
| CN207479646U (en) * | 2017-10-27 | 2018-06-12 | 精进电动科技（正定）有限公司 | Motor casing clamping device |
| CN207326095U (en) * | 2017-11-02 | 2018-05-08 | 宜昌博远电子有限公司 | A kind of horizontal bead cutter of single-station for micro motor shell |
| CN210232364U (en) * | 2019-01-08 | 2020-04-03 | 精进电动科技（正定）有限公司 | High-torque new energy motor shell four-axis combined clamp |
| CN209849909U (en) * | 2019-01-24 | 2019-12-27 | 上海真兰仪表科技股份有限公司 | Tooling with sliding type tailstock for machining and milling waist wheel rotor |
| CN209938173U (en) * | 2019-02-25 | 2020-01-14 | 云南开放大学 | Four-shaft transmission mechanism of small artware carving machine |
| CN109877596B (en) * | 2019-03-22 | 2024-10-22 | 珠海瑞凌焊接自动化有限公司 | Automobile motor casing production line |
| CN210327340U (en) * | 2019-10-25 | 2020-04-14 | 阜宁木森铸件有限公司 | Good motor housing production of stability is with location frock |
| CN111112999A (en) * | 2019-12-25 | 2020-05-08 | 宁波旭升汽车技术股份有限公司 | Rotary assembly stand for motor casing |
| CN215546948U (en) * | 2021-05-08 | 2022-01-18 | 安徽朗轶工业自动化系统有限公司 | Motor casing's processingequipment |
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