CN108555760B - Plane polishing device - Google Patents
Plane polishing device Download PDFInfo
- Publication number
- CN108555760B CN108555760B CN201810370337.XA CN201810370337A CN108555760B CN 108555760 B CN108555760 B CN 108555760B CN 201810370337 A CN201810370337 A CN 201810370337A CN 108555760 B CN108555760 B CN 108555760B
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- workpiece
- crank
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- rod
- guide rail
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
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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)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a plane polishing device which comprises a machine body, a motor, a polishing disc, a reinforcing rib, an eccentric cam pushing rod mechanism, a crank sliding block mechanism, a screw rod lifting mechanism, a workpiece fixing disc, pins and a workpiece. The other mechanisms are sequentially installed and connected. The workpiece fixing disc is connected with the lower end of the screw rod lifting mechanism through a pin, and the workpiece is pressed below the workpiece fixing disc. The invention can realize the control of the relative motion between the polishing disk and the workpiece, and applies a pushing force on the basis of the relative friction force between the workpiece and the polishing disk, so that the workpiece motion is more stable and continuous, the time required by the polishing procedure is reduced, the production cost is reduced, and the polishing quality and the polishing efficiency are improved.
Description
Technical Field
The invention relates to the technical field of polishing equipment, in particular to a plane polishing device.
Background
At present, the plane polishing machine is widely applied and can be used for plane polishing of different industries and different materials. The surface finish polishing is mainly carried out on the workpieces made of various materials, so that the workpieces reach certain flatness, parallelism and smoothness and are more attractive. The polishing method is suitable for grinding and polishing metal planes and nonmetallic materials and surface treatment before electroplating, and the plane polishing technology plays an important role in improving the value and performance of the processed materials. The existing plane polishing device is relatively complex, and the plane polishing process mostly drives the grinding disc to rotate through an engine, generates friction with a workpiece rotating on the grinding disc, and uses the friction to generate cutting force to grind the uneven part of the surface of the workpiece so as to achieve the polishing purpose. The workpiece rotates under the action of friction force of the polishing disk, so that unstable and discontinuous rotation movement of the workpiece is easy to occur, uneven polishing of the surface of the workpiece is caused, and the polishing quality of the workpiece is affected. Furthermore, only the relative friction force between the bottom polishing disk and the workpiece is used for polishing, and the polishing time is long, the polishing efficiency is low, and time and labor are wasted because the friction is small.
Disclosure of Invention
In order to solve the problems, the invention provides the plane polishing device which has the advantages of simple structure, reliable work and convenient maintenance, and can effectively reduce the cost and improve the polishing efficiency and the polishing quality.
The technical scheme adopted by the invention is as follows: a plane polishing device is characterized in that: comprises a machine body, a motor, a polishing disk, a reinforcing rib, an eccentric cam pushing rod mechanism, a crank sliding block mechanism, a screw rod lifting mechanism, a workpiece fixing disk, pins and workpieces.
The machine body comprises a polishing solution outlet, a machine body shell and a crank mounting seat. The right side of the engine body shell is welded with the polishing solution outlet, the crank mounting seat is welded at the rear of the engine body shell, and the left side of the engine body shell is provided with a through hole. The motor is vertically arranged at the bottom of the machine body, and the polishing disk is arranged at the tail end of an output shaft of the motor. The eccentric cam-follower mechanism includes a cam follower, a circular guide rail groove, a spring, and an eccentric cam. The eccentric cam is arranged on the output shaft of the motor and is positioned under the polishing disk, and the eccentric cam and the cam push rod form a certain eccentric position, and the cam push rod passes through the through hole on the left side of the machine body shell. When the motor rotates, the eccentric cam on the driving shaft and the polishing disk synchronously rotate. The eccentric cam is rigidly connected with the middle end of the motor shaft,
the crank sliding block mechanism comprises a sliding block, a vertical push rod, a connecting rod and a crank. The slide block is rigidly connected with the vertical push rod and the cam push rod, and the crank is hinged with the crank mounting seat.
The screw rod lifting mechanism comprises a lifting screw rod, a worm, a sleeve, a worm wheel and a connecting flange, wherein the upper end of the lifting screw rod is rigidly connected with a connecting rod of the crank slider mechanism. The workpiece fixing disc is connected with a connecting flange at the lower end of the screw rod lifting mechanism through pins, and the pins only circumferentially position the workpiece fixing disc. The connecting flange is welded with the lower part of the sleeve, and through holes are formed in the circumferential direction of the outer edge of the connecting flange. The upper part of the workpiece fixing plate is provided with a flange connecting groove, a blind hole is formed in the circumferential direction of the flange connecting groove, the blind hole is aligned with the center of a through hole in the circumferential direction of the outer edge of the connecting flange, and then the blind hole penetrates through the through hole of the connecting flange and the blind hole on the workpiece fixing plate through a pin. Holes are formed in the left side surface and the right side surface of the upper end of the sleeve, the worm penetrates through the sleeve and is externally meshed with the worm wheel, and the worm wheel is internally meshed with the lifting screw rod.
One end of the reinforcing rib is connected with the left side of the machine body shell, and the other end of the reinforcing rib is connected with a circular guide rail groove of the eccentric cam pushing rod mechanism, and the circular guide rail groove is required to be placed horizontally. The left end of the circular guide rail groove is provided with a spring, the left end of the spring is rigidly connected with the circular guide rail groove, the right end of the spring is rigidly connected with a sliding block, and the sliding block is arranged in the circular guide rail groove and guided by the circular guide rail groove.
The left end of the connecting rod is hinged with the upper end of the vertical push rod, the right end of the connecting rod is hinged with the rear end of the crank, and the connecting rod is rigidly connected with the lifting screw rod. The front end of the crank is hinged with the crank mounting seat.
The outer edge of the workpiece fixing disc is provided with a circular weight groove for loading weights. The lower extreme of work piece fixed disk is equipped with the work piece mounting groove for install the work piece, and the shape and the size of work piece mounting groove are confirmed by the shape and the size of the work piece that polishes, and during operation work piece presses in work piece mounting groove inslot, and work piece edge has certain clearance with the work piece mounting groove, and the work piece can rotate in the inslot.
Compared with the prior art, the invention has the technical effects that: the motor rotates to drive the polishing disk to rotate, and meanwhile, the eccentric cam drives the cam push rod to horizontally move, and the cam push rod is rigidly connected with the slide block, so that a crank of the crank slide block mechanism is driven to perform rotary motion, the screw rod lifting mechanism is rigidly connected with the crank of the crank slide block mechanism, and the whole screw rod lifting mechanism performs rotary motion together with the workpiece fixing disk. And forming relative motion between the workpiece on the workpiece fixing disc and the polishing disc to finish the polishing process. The invention can realize the control of the relative motion between the polishing disk and the workpiece, and applies a pushing force on the basis of the relative friction force between the workpiece and the polishing disk, so that the workpiece motion is more stable and continuous, the time required by the polishing procedure is reduced, the production cost is reduced, and the polishing quality and the polishing efficiency are improved.
Drawings
FIG. 1 is an isometric view according to an embodiment of the invention;
FIG. 2 is an isometric view of a fuselage removed according to an embodiment of the present invention;
FIG. 3 is a left cross-sectional view according to an embodiment of the present invention;
fig. 4 is a partial enlarged view I of the screw lifting mechanism and workpiece fixture tray assembly of fig. 3 in accordance with an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, 2 and 4, the invention comprises a machine body 1, an eccentric cam-pushing rod mechanism 2, a reinforcing rib 3, a crank-slider mechanism 4, a polishing disk 5, a screw lifting mechanism 6, a workpiece fixing disk 7, a motor 8, a pin 9 and a workpiece 10.
The machine body 1 comprises a polishing solution outlet 1-1, a machine body shell 1-2 and a crank mounting seat 1-3. The right side of the machine body shell 1-2 is welded with the polishing solution outlet 1-1. The crank mounting seat 1-3 is welded on the engine body shell 1-2, and a through hole is formed in the left side of the engine body shell 1-2. The cam follower 2-1 is inserted through the through hole and is mounted in the circular guide rail groove 2-2.
The eccentric cam pushing rod mechanism 2 comprises a cam pushing rod 2-1, a circular guide rail groove 2-2, a spring 2-3 and an eccentric cam 2-4.
The crank slide block mechanism 4 comprises a slide block 4-1, a vertical push rod 4-2, a connecting rod 4-3 and a crank 4-4.
As shown in fig. 3 and 4, the crank mounting seat 1-3 is fixed on the machine body shell 1-2, the fulcrum A of the crank mounting seat 1-3 is hinged with one end of the crank 4-4, the other end of the crank 4-4 is hinged with the connecting rod 4-3, the lower end of the connecting rod 4-3 at the position where the crank 4-4 is hinged with the connecting rod 4-3 is rigidly connected with the screw rod lifting mechanism 6, the screw rod lifting mechanism 6 comprises a lifting screw rod 6-1, a worm wheel 6-2, a sleeve 6-3 and a worm 6-4, and a connecting flange 6-5 is welded at the lower end of the sleeve 6-3. The lower end of the lifting screw rod 6-1 is arranged in the sleeve 6-3, the upper end of the lifting screw rod is rigidly connected with the rear end of the connecting rod 4-3, the lifting screw rod 6-1 is internally meshed with the worm wheel 6-4, and the worm wheel 6-4 is externally meshed with the worm. The worm 6-2 is provided with a handle, when the handle is rotated, the worm 6-2 rotates, meanwhile, the worm 6-2 and the sleeve 6-3 move together along the lifting screw rod 6-1, and when the worm moves downwards, the connecting flange 6-5 at the lower end of the sleeve 6-3 downwards presses the workpiece fixing disc 7 and the workpiece 10 to be contacted with the polishing disc 5. The connecting flange 6-5 on the sleeve 6-3 is moved away from the workpiece holding disk 7 when moved upwards for removing and replacing the workpiece 10.
As shown in fig. 2, an eccentric cam 2-4 is mounted on the output shaft of the motor 8, the polishing disk 5 is connected with the end of the output shaft of the motor 8, and when the motor 8 rotates, the eccentric cam 2-4 on the driving shaft and the polishing disk 5 rotate synchronously.
As shown in fig. 1, one end of the reinforcing rib 3 is connected with the left side of the body casing 1-2, and the other end is connected with the circular guide rail groove 2-2 of the eccentric cam pushing rod mechanism 2. Here, it should be ensured that the circular guide rail groove 2-2 is placed horizontally.
As shown in fig. 1 and 2, a slider 4-1 is placed in a circular guide rail groove 2-2, the slider 4-1 is rigidly connected with a cam follower 2-1 and a vertical follower 4-2, and the front end of a crank 4-4 is hinged with a crank mount 1-3. The left end of the connecting rod 4-3 is hinged with the vertical push rod 4-2, and the right end is hinged with the rear end of the crank 4-4. The rear end of the crank 4-4 is also rigidly connected with the screw rod lifting mechanism 6, and the workpiece fixing disc 7 is connected with the connecting flange 6-5 on the sleeve 6-3 of the screw rod lifting mechanism 6 by adopting a pin 9, so that circumferential positioning is only carried out on the workpiece fixing disc 7. When the crank 4-4 rotates, the screw lifting mechanism 6 and the workpiece fixing disc 7 synchronously move with the crank 4-4.
As shown in FIG. 4, the workpiece fixing plate 7 is provided with a blind hole 7-1 and a flange connecting groove 7-2, the lower part of the sleeve 6-3 is welded with a connecting flange 6-5, and the peripheral direction of the outer edge of the connecting flange 6-5 is provided with a through hole. Blind holes 7-1 are formed in the circumferential direction of the flange connecting groove 7-2, the blind holes 7-1 are aligned with the centers of through holes in the circumferential direction of the outer edge of the connecting flange 6-5, and then the blind holes 7-1 on the workpiece fixing disc 7 penetrate through the through holes of the connecting flange 6-5 through pins 9, so that circumferential positioning is achieved. Thereby connecting the screw lifting mechanism 6 with the workpiece fixing plate 7. The outer edge of the workpiece fixing disc 7 is provided with a circular weight groove 7-3 for loading weights; the lower end is provided with a workpiece mounting groove 7-6 for fixing the workpiece 10.
As shown in fig. 1 and 2, the eccentric cam 2-4 is connected to the output shaft of the motor 8, the polishing disk 5 is connected to the end of the output shaft of the motor 8, and the eccentric cam 2-4 is located directly below the polishing disk 5 to rotate together with the polishing disk 5 following the motor 8. The eccentric cam 2-4 and the cam pushing rod 2-1 form a certain eccentric position, the cam pushing rod 2-1 passes through a left through hole of the machine body shell 1-2 and is arranged in the circular guide rail groove 2-2, the left end of the cam pushing rod 2-1 is provided with the sliding block 4-1 and can slide back and forth in the circular guide rail groove 2-2, the circular guide rail groove 2-2 is fixed on the machine body shell 1-2 through the welding of the reinforcing rib 3, the left end of the circular guide rail groove 2-2 is provided with the spring 2-3, and the two ends of the spring 2-3 are respectively and rigidly connected with the inner left end face of the circular guide rail groove 2-2 and the left end face of the sliding block 4-1. The sliding block 4-1 is rigidly connected with the lower end of the vertical push rod 4-2, the upper end of the vertical push rod 4-2 is hinged with the left end of the connecting rod 4-3, the right end of the connecting rod 4-3 is hinged with the rear end of the crank 4-4, the front end of the crank 4-4 is hinged with the crank mounting seat 1-3, all hinged parts of the rods can freely rotate, and the crank mounting seat 1-3 is fixed on the engine body shell 1-2.
When the polishing device is used, the motor 8 is used as a power source, when the motor 8 rotates, the eccentric cam 2-4 and the polishing disk 5 on the motor shaft are driven to rotate simultaneously, the cam push rod 2-1 moves leftwards under the action of the eccentric cam 2-4, the left end slide block 4-1 of the cam push rod 2-1 is driven to slide leftwards, the spring 2-3 is compressed leftwards by the slide block 4-1 at the moment, after the pushing movement angle of the eccentric cam 2-4 is exceeded, the slide block 4-1 starts to move rightwards under the action of the elastic force of the spring 2-3, the slide block 4-1 slides back and forth in a certain displacement in the circular guide rail groove 2-2 under the action of the eccentric cam 2-3, the vertical push rod 4-2 moves synchronously with the slide block 4-1 at the moment, the connecting rod 4-3 hinged on the vertical push rod 4-2 is driven to move, the crank 4-4 rotates under the pushing of the connecting rod 4-3, and a fulcrum at the hinge position of the connecting rod 4-4 starts to rotate around a hinge fulcrum A on the crank mounting seat 1-3, so that the screw lifting mechanism 6 and the workpiece fixing disk 7 are driven to rotate around a hinge fulcrum A on the crank mounting seat 1-3 at the circumference of the hinge position on the crank mounting seat 10 at the moment.
According to the invention, the coordinated movement of the eccentric cam pushing rod mechanism 2 and the crank sliding block mechanism 4 applies a pushing force to the workpiece fixing disc 7 on the basis of the relative friction force between the workpiece 10 and the polishing disc 5, so that a pushing force is applied to the workpiece 10, the movement is more stable and continuous when the workpiece 10 is polished, the time required by a polishing procedure is reduced, the production cost is reduced, and the polishing quality and the polishing efficiency are improved.
According to the invention, the workpiece fixing disc 7 is in circumferential positioning connection with the screw rod lifting mechanism 6 only by adopting the pins 9, so that the pressure loaded by weights can completely and uniformly act on the workpiece 10, and the flatness of the workpiece 10 after polishing is improved. During polishing, the workpiece 10 is pressed in the workpiece mounting groove 7-6, a certain gap is reserved between the edge of the workpiece 10 and the workpiece mounting groove 7-6, and the workpiece 10 can rotate in the groove to realize self rotation, so that the flexibility of the workpiece 10 during polishing is improved, and the polishing efficiency is improved.
While embodiments of the invention have been illustrated and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing specific embodiments, but that the invention may be practiced in other specific embodiments without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A planar polishing apparatus comprising:
a body (1); a motor (8) vertically installed at the bottom of the body (1);
the eccentric cam pushing rod mechanism (2) comprises a cam pushing rod (2-1) and an eccentric cam (2-4), wherein a circular guide rail groove (2-2) is formed in one end of the cam pushing rod (2-1), and the eccentric cam (2-4) is arranged on an output shaft of the motor (8);
the crank sliding block mechanism (4) comprises a sliding block (4-1), a vertical push rod (4-2), a connecting rod (4-3) and a crank (4-4) which are sequentially connected, wherein the sliding block (4-1) is rigidly connected with the vertical push rod (4-2), and the sliding block (4-1) is arranged in a circular guide rail groove (2-2) and guided by the circular guide rail groove; the crank (4-4) is hinged on the machine body (1);
the upper end of the screw rod lifting mechanism (6) is rigidly connected with the connecting rod (4-3) of the crank slider mechanism (4);
a workpiece fixing disc (7) connected with the screw rod lifting mechanism (6) by a pin (9),
the screw rod lifting mechanism (6) comprises a lifting screw rod (6-1), a worm (6-2), a sleeve (6-3), a worm wheel (6-4) and a connecting flange (6-5),
a polishing disk (5) mounted at the end of the output shaft of the motor (8);
wherein the connecting flange (6-5) is welded with the lower part of the sleeve (6-3), through holes are formed in the circumferential direction of the outer edge of the connecting flange (6-5), holes are formed in the left side surface and the right side surface of the upper end of the sleeve (6-3), the worm (6-2) penetrates through the sleeve (6-3) to be externally meshed with the worm wheel (6-4), the worm wheel (6-4) is internally meshed with the lifting screw rod (6-1),
the circular guide rail groove (2-2) is horizontally arranged,
the left end of the circular guide rail groove (2-2) is provided with a spring (2-3), the left end of the spring (2-3) is rigidly connected with the left end of the circular guide rail groove (2-2), and the right end of the spring (2-3) is rigidly connected with the sliding block (4-1).
2. The planar polishing apparatus as claimed in claim 1, wherein,
the machine body (1) comprises a polishing solution outlet (1-1), a machine body shell (1-2) and a crank mounting seat (1-3),
the right side of the engine body shell (1-2) is welded with the polishing solution outlet (1-1), the crank mounting seat (1-3) is welded at the rear of the engine body shell (1-2), the crank (4-4) is hinged to the crank mounting seat (1-3), and a through hole is formed in the left side of the engine body shell (1-2) and used for a cam pushing rod (2-1) to pass through.
3. The planar polishing apparatus as claimed in claim 1 or 2, wherein,
the left end of the connecting rod (4-3) is hinged with the upper end of the vertical push rod (4-2), the right end of the connecting rod (4-3) is hinged with the rear end of the crank (4-4) and is rigidly connected with the lifting screw rod (6-1), and
wherein the front end of the crank (4-4) is hinged with the crank mounting seat (1-3).
4. The planar polishing apparatus as claimed in claim 1, wherein,
blind holes (7-1) are arranged in the upper circumferential direction of the workpiece fixing disc (7),
the blind hole (7-1) is aligned with the center of the through hole in the circumferential direction of the outer edge of the connecting flange (6-5), and then passes through the through hole of the connecting flange (6-5) and the blind hole (7-1) through a pin (9).
5. The planar polishing apparatus as claimed in claim 1 or 4, wherein
The outer edge of the workpiece fixing disc (7) is provided with a circular weight groove (7-3) for loading weights and
the lower end of the workpiece fixing plate (7) is provided with a workpiece mounting groove (7-6) for mounting a workpiece (10), and the shape and the size of the workpiece mounting groove (7-6) are determined by the shape and the size of the polished workpiece (10).
6. The planar polishing apparatus as claimed in claim 1, 2 or 4, wherein,
the device also comprises a reinforcing rib (3), one end of the reinforcing rib is connected with the left side of the machine body (1), and the other end of the reinforcing rib is connected with the circular guide rail groove (2-2) of the eccentric cam pushing rod mechanism (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810370337.XA CN108555760B (en) | 2018-04-24 | 2018-04-24 | Plane polishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810370337.XA CN108555760B (en) | 2018-04-24 | 2018-04-24 | Plane polishing device |
Publications (2)
| Publication Number | Publication Date |
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| CN108555760A CN108555760A (en) | 2018-09-21 |
| CN108555760B true CN108555760B (en) | 2023-07-18 |
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| CN201810370337.XA Active CN108555760B (en) | 2018-04-24 | 2018-04-24 | Plane polishing device |
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| CN (1) | CN108555760B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216560B (en) * | 2019-06-06 | 2024-04-16 | 浙江工业大学 | Plane polishing device |
| CN110614576A (en) * | 2019-09-10 | 2019-12-27 | 合肥嘉东光学股份有限公司 | Double-side polishing machine |
| CN110587486A (en) * | 2019-10-11 | 2019-12-20 | 蓝思科技（长沙）有限公司 | Grinding jig, grinding device containing grinding jig and grinding method |
| CN111376144B (en) * | 2020-04-30 | 2021-11-19 | 云和县达祥凯机械设计工作室 | Polishing and cleaning mechanism for shaft block |
| CN113084644B (en) * | 2021-04-19 | 2022-08-23 | 东莞市康彩五金有限公司 | Automatic processing machine and method for manufacturing baking finish plate |
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| CN114274018B (en) * | 2021-12-28 | 2023-02-03 | 苏州天顺复合材料科技有限公司 | Full-automatic grinding device for wind power blade girder |
| CN114700861B (en) * | 2022-03-14 | 2023-02-03 | 重庆电子工程职业学院 | Notebook computer shell burnishing device |
| CN115091344B (en) * | 2022-08-24 | 2022-12-20 | 江苏晶杰光电科技有限公司 | Workpiece polishing device and method |
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| CN108555760A (en) | 2018-09-21 |
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