CN114393486B - Grinding device for machine-building spare part - Google Patents
Grinding device for machine-building spare part Download PDFInfo
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- CN114393486B CN114393486B CN202210085125.3A CN202210085125A CN114393486B CN 114393486 B CN114393486 B CN 114393486B CN 202210085125 A CN202210085125 A CN 202210085125A CN 114393486 B CN114393486 B CN 114393486B
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- main frame
- motor
- polishing
- fixedly connected
- turnover
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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
- B24B27/00—Other grinding machines or devices
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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
- B24B27/00—Other grinding machines or devices
- B24B27/0092—Grinding attachments for lathes or the like
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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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
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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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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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
- 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
- B24B55/12—Devices for exhausting mist of oil or coolant; Devices for collecting or recovering materials resulting from grinding or polishing, e.g. of precious metals, precious stones, diamonds or the like
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a polishing device for machine-made parts, which comprises a main frame with an opening at the top end, wherein both sides of the main frame are respectively and rotatably connected with a turnover mechanism, a driving mechanism is arranged in the turnover mechanism, the driving mechanism is rotatably connected with a workbench, the workbench is slidably connected with the turnover mechanism, a plurality of clamping mechanisms are symmetrically arranged at both ends of the workbench, a workpiece to be polished is arranged between the clamping mechanisms at both ends of the workbench, the top end of the main frame is respectively provided with a lifting mechanism, a moving mechanism is movably connected between the two lifting mechanisms, the bottom of the moving mechanism is fixedly connected with a polishing mechanism, the polishing mechanism comprises a polishing head for polishing the workpiece to be polished, a collecting box is arranged opposite to the main frame, and a controller is arranged at the outer side of the main frame.
Description
Technical Field
The invention relates to the technical field of machining of mechanical parts, in particular to a polishing device for mechanical manufacturing parts.
Background
Mechanical parts, also called mechanical elements, are basic elements constituting a machine, the machine is produced by a plurality of mechanical parts, in the processing and production process of the parts, various forms such as turning, milling, grinding, boring, drilling and the like are involved, wherein grinding is a mechanical processing method for removing materials, grinding is one of the widely applied material removal methods, and grinding is an important process in grinding, generally a processing method for changing the physical properties of the material surface by friction with the help of a rough object, and the main purpose is to obtain specific surface roughness.
Disclosure of Invention
The invention aims to provide a polishing device for machine-made parts, which is used for solving the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a polishing device for machine-made parts, which comprises a main frame with an opening at the top end, wherein two sides of the main frame are respectively and rotatably connected with a turnover mechanism, a driving mechanism is arranged in the turnover mechanism, the driving mechanism is rotatably connected with a workbench, the workbench is in sliding connection with the turnover mechanism, a plurality of clamping mechanisms are symmetrically arranged at two ends of the workbench, a workpiece to be polished is arranged between the clamping mechanisms at the two ends of the workbench, the top end of the main frame is respectively provided with a lifting mechanism, a moving mechanism is movably connected between the two lifting mechanisms, the bottom of the moving mechanism is fixedly connected with a polishing mechanism, the polishing mechanism comprises a polishing head for polishing the workpiece to be polished, a collecting box is arranged on the opposite side of the main frame, a controller is arranged at the outer side of the main frame, and the turnover mechanism, the driving mechanism, the clamping mechanism, the lifting mechanism, the moving mechanism and the polishing mechanism are respectively and electrically connected with the controller.
Preferably, the turnover mechanism includes with the main frame rotates the roll-over table of being connected, the shape of roll-over table is the character cut in bas-relief, the both ends rigid coupling of roll-over table has the trip shaft, the trip shaft passes the main frame and stretches out the outside of main frame, the main frame with be connected through the bearing between the trip shaft, the outside rigid coupling of main frame has the upset case, the rigid coupling has upset portion in the upset case, upset portion with the trip shaft transmission is connected, upset portion with controller electric connection.
Preferably, the overturning part comprises an overturning motor fixedly connected to the outer wall of the main frame, an output shaft of the overturning motor is fixedly connected to a first gear, the first gear is meshed to a second gear, the second gear is fixedly connected to the overturning shaft, and the overturning motor is electrically connected to the controller.
Preferably, the driving mechanism comprises a driving motor fixedly connected in the overturning platform, an output shaft of the driving motor extends out of the overturning platform and is fixedly connected with the workbench, and the driving motor is electrically connected with the controller.
Preferably, a gap exists between the workbench and the overturning platform, a plurality of grooves are formed in the bottom surface of the workbench at equal intervals, spheres are embedded in the grooves, and the lowest point of each sphere is abutted to the top surface of the overturning platform.
Preferably, the shape of workstation is the character cut in bas-relief, the both ends symmetry of workstation is equipped with the cavity, the rigid coupling has in the cavity clamping mechanism.
Preferably, clamping mechanism includes the rigid coupling and is in the electronic telescoping cylinder of cavity inner wall, the output rigid coupling of electronic telescoping cylinder has the clamping bar, the clamping bar passes the inner wall of workstation and stretches out outside the workstation, electronic telescoping cylinder with controller electric connection, the clamping bar butt that is had wait to polish the work piece.
Preferably, the cavity in the main frame, the elevating system rigid coupling is in the connecting block on main frame top, the top surface rigid coupling of connecting block has elevator motor, elevator motor's output shaft rigid coupling has the lead screw, the lead screw passes the connecting block and stretches into in the main frame, the lead screw stretches into the one end swing joint of main frame has the sleeve, the sleeve rigid coupling has moving mechanism, elevator motor with controller electric connection.
Preferably, the moving mechanism includes a cross slide rail fixedly connected with the sleeve shaft, the cross slide rail includes a first slide rail fixedly connected with the sleeve shaft, one end of the first slide rail is provided with a first motor, the first slide rail is connected with a second slide rail in a sliding manner, one end of the second slide rail is provided with a second motor, the second slide rail is fixedly connected with the polishing mechanism, and the first motor and the second motor are respectively electrically connected with the controller.
Preferably, the polishing mechanism comprises a polishing motor fixedly connected with the second slide rail, and an output shaft of the polishing motor is fixedly connected with the polishing head.
The invention discloses the following technical effects: when a workpiece to be polished is required to be polished, firstly, the workpiece to be polished is placed on a workbench, the workpiece to be polished is processed by a clamping mechanism through a controller and is fixed, after the workpiece to be polished is fixed, a lifting mechanism and a polishing head work through the controller, the polishing head gradually approaches the workpiece to be polished, the workpiece to be polished is polished, when the angle of the workpiece to be polished needs to be adjusted, a driving mechanism works through the controller to drive the workbench to horizontally rotate, when the side surface of the workpiece to be polished needs to be polished, a turnover mechanism works through the controller to drive the workbench to turn over, the polishing head moves to the position right above the workpiece to be polished through the controller, the workpiece to be polished can be polished conveniently, meanwhile, fragments generated by polishing can be collected through a collection box, the top surface of the turnover mechanism faces downwards through the controller, and the fragments fall into the collection box.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural view of a polishing apparatus for machine-made parts according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a cross-sectional view of several of the clamping bars;
FIG. 4 is a schematic view of a structure in which the overturning platform faces downwards;
wherein: 1. a main frame; 2. a work table; 3. a workpiece to be polished; 4. polishing heads; 5. a collection box; 6. a controller; 7. a turning table; 8. a turning shaft; 9. a bearing; 10. turning over the box; 11. turning over a motor; 12. a first gear; 13. a second gear; 14. a drive motor; 15. a groove; 16. a sphere; 17. a cavity; 18. an electric telescopic cylinder; 19. a clamping lever; 20. connecting blocks; 21. a lifting motor; 22. a lead screw; 23. a sleeve shaft; 24. a first slide rail; 25. a second slide rail; 26. a first motor; 27. a second motor; 28. polishing the motor; 29. a handle; 30. a chute; 31. a third slide rail; 32. a universal wheel.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
Referring to fig. 1-4, the invention provides a polishing device for machine manufacturing parts, which comprises a main frame 1 with an opening at the top end, wherein both sides of the main frame 1 are respectively and rotatably connected with a turnover mechanism, a driving mechanism is arranged in the turnover mechanism, the driving mechanism is rotatably connected with a workbench 2, the workbench 2 is in sliding connection with the turnover mechanism, a plurality of clamping mechanisms are symmetrically arranged at both ends of the workbench 2, a workpiece 3 to be polished is arranged between the clamping mechanisms at both ends of the workbench 2, lifting mechanisms are respectively arranged at the top end of the main frame 1, a moving mechanism is movably connected between the two lifting mechanisms, the bottom of the moving mechanism is fixedly connected with a polishing mechanism, the polishing mechanism comprises a polishing head 4 for polishing the workpiece 3 to be polished, a collecting box 5 is arranged on the opposite surface of the main frame 1, and a controller 6 is arranged at the outer side of the main frame 1, and the turnover mechanism, the driving mechanism, the clamping mechanism, the lifting mechanism, the moving mechanism and the polishing mechanism are respectively and electrically connected with the controller 6.
When a workpiece 3 to be polished is required to be polished, firstly, the workpiece 3 to be polished is placed on the workbench 2, the workpiece 3 to be polished is processed by the clamping mechanism through the controller 6, the workpiece is fixed, after the fixing is completed, the lifting mechanism and the polishing head 4 work through the controller 6, the polishing head 4 is enabled to be gradually close to the workpiece 3 to be polished, the workpiece 3 to be polished is polished, when the angle of the workpiece 3 to be polished is required to be adjusted, the driving mechanism works through the controller 6, the workbench 2 is driven to horizontally rotate, when the side face of the workpiece 3 to be polished is required to be polished, the turnover mechanism works through the controller 6, the workbench 2 is driven to turn over, the polishing head 4 is enabled to move right above the workpiece 3 to be polished through the controller 6, the workpiece 3 to be polished is convenient to be polished, meanwhile, produced chips after polishing can be collected through the collection box 5, the top face of the turnover mechanism faces downwards through the controller 6, and the chips fall into the collection box 5.
Further optimize the scheme, tilting mechanism includes the roll-over table 7 of being connected with main frame 1 rotation, the shape of roll-over table 7 is character cut in bas-relief, the both ends rigid coupling of roll-over table 7 has trip shaft 8, trip shaft 8 passes main frame 1 and stretches out the outside of main frame 1, be connected through bearing 9 between main frame 1 and the trip shaft 8, the outside rigid coupling of main frame 1 has upset case 10, the rigid coupling has the upset portion in the upset case 10, the upset portion is connected with 8 transmissions of trip shaft, upset portion and 6 electric connection of controller.
Further optimize the scheme, upset portion includes the upset motor 11 of rigid coupling on main frame 1 outer wall, and the output shaft rigid coupling of upset motor 11 has first gear 12, and first gear 12 meshes has second gear 13, and second gear 13 and trip shaft 8 rigid coupling, upset motor 11 and controller 6 electric connection.
When the workbench 2 needs to be turned over, the turning motor 11 works through the controller 6, the output shaft of the turning motor 11 drives the first gear 12 to rotate, the first gear 12 drives the second gear 13 meshed with the first gear to rotate, the second gear 13 drives the turning shaft 8 to rotate, the turning shaft 8 drives the turning table 7 to rotate, and the turning table 7 drives the workbench 2 to synchronously rotate so as to adjust the polishing angle of the workpiece 3 to be polished.
According to a further optimized scheme, the driving mechanism comprises a driving motor 14 fixedly connected in the overturning platform 7, an output shaft of the driving motor 14 extends out of the overturning platform 7 and is fixedly connected with the working platform 2, and the driving motor 14 is electrically connected with the controller 6.
When the angle of the workpiece 3 to be polished needs to be adjusted through horizontal rotation, the driving motor 14 is started through the controller 6, the output shaft of the driving motor 14 drives the workbench 2 fixedly connected with the driving motor to rotate, and forward and reverse rotation of the workbench 2 can be achieved.
Further optimize the scheme, there is the clearance between workstation 2 and the roll-over table 7, and the bottom surface of workstation 2 is equidistant to be equipped with a plurality of recesses 15, and recess 15 embeds is equipped with spheroid 16, and the minimum point of spheroid 16 is with the top surface butt of roll-over table 7.
The balls 16 are arranged between the workbench 2 and the overturning platform 7, so that the friction resistance generated by the workbench 2 and the overturning platform 7 in the rotating process is reduced.
According to the further optimized scheme, the workbench 2 is in a concave shape, the two ends of the workbench 2 are symmetrically provided with cavities 17, and clamping mechanisms are fixedly connected in the cavities 17.
Further optimize the scheme, clamping mechanism includes the rigid coupling at the electronic telescoping cylinder 18 of cavity 17 inner wall, and the output rigid coupling of electronic telescoping cylinder 18 has clamping rod 19, and clamping rod 19 passes the inner wall of workstation 2 and stretches out outside workstation 2, electronic telescoping cylinder 18 and controller 6 electric connection, and the clamping rod 19 butt that remains to polish work piece 3.
When the workpiece 3 to be polished needs to be clamped tightly, the electric telescopic cylinders 18 are started through the controller 6, the two ends of the workbench 2 are respectively provided with the plurality of electric telescopic cylinders 18, and the electric telescopic cylinders 18 with corresponding number are selected to work according to the size of the workpiece 3 to be polished, so that the clamping rods 19 are gradually close to the workpiece 3 to be polished, and finally the workpiece 3 to be polished is tightly pressed. For some parts with irregular shapes, the two ends of the parts are respectively pressed, and the parts with irregular shapes are pressed by adjusting the extending length of the electric telescopic cylinder 18.
Further optimize the scheme, cavity in the main frame 1, elevating system rigid coupling is at the connecting block 20 on 1 top of main frame, and the top surface rigid coupling of connecting block 20 has elevator motor 21, and elevator motor 21's output shaft rigid coupling has lead screw 22, and in lead screw 22 passed connecting block 20 and stretched into main frame 1, lead screw 22 stretched into the one end swing joint of main frame 1 had sleeve 23, and sleeve 23 rigid coupling has moving mechanism, elevator motor 21 and 6 electric connection of controller.
When the sanding head 4 needs to move downwards, the lifting motor 21 is started through the controller 6, the lifting motor 21 drives the lead screw 22 to rotate, the lead screw 22 drives the sleeve shaft 23 movably connected with the lead screw 22 to move downwards, the sleeve shaft 23 drives the moving mechanism fixedly connected with the sleeve shaft to move downwards, and the moving mechanism drives the sanding head 4 to move downwards.
In a further optimized scheme, the moving mechanism includes a cross slide rail fixedly connected to the sleeve shaft 23, and the connection manner of the cross slide rail is as follows from the prior art, which is not described herein again. The cross slide rail comprises a first slide rail 24 fixedly connected with the sleeve shaft 23, a first motor 26 is arranged at one end of the first slide rail 24, a second slide rail 25 is connected onto the first slide rail 24 in a sliding manner, a second motor 27 is arranged at one end of the second slide rail 25, a polishing mechanism is fixedly connected onto the second slide rail 25, and the first motor 26 and the second motor 27 are respectively electrically connected with the controller 6.
In a further optimized scheme, the polishing mechanism comprises a polishing motor 28 fixedly connected with the second slide rail 25, the output shaft of the polishing motor 28 is fixedly connected with the polishing head 4, and the polishing motor 28 is electrically connected with the controller 6.
The grinding motor 28 is started through the controller 6, the output shaft of the grinding motor 28 drives the grinding head 4 to rotate, and meanwhile the rotating speed of the grinding motor 28 can be adjusted so as to meet the grinding requirements of workpieces 3 to be ground, which are made of different materials.
Further optimizing the scheme, the outside swing joint of collecting box 5 has handle 29, and the bottom symmetry rigid coupling of main frame 1 has third slide rail 31, and the bottom surface symmetry rigid coupling of collecting box 5 has spout 30, and spout 30 and third slide rail 31 looks adaptation are convenient for handle the piece in the collecting box 5.
Further optimize the scheme, the bottom surface four corners of main frame 1 are fixedly connected with universal wheel 32, are convenient for remove this device.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (5)
1. The utility model provides a grinding device for machine-building spare part which characterized in that: the polishing machine comprises a main frame (1) with an opening at the top end, wherein two sides of the main frame (1) are respectively and rotatably connected with a turnover mechanism, a driving mechanism is arranged in the turnover mechanism, the driving mechanism is rotatably connected with a workbench (2), the workbench (2) is in sliding connection with the turnover mechanism, a plurality of clamping mechanisms are symmetrically arranged at two ends of the workbench (2), a workpiece (3) to be polished is arranged between the clamping mechanisms at two ends of the workbench (2), a lifting mechanism is respectively arranged at the top end of the main frame (1), a moving mechanism is movably connected between the two lifting mechanisms, a polishing mechanism is fixedly connected to the bottom of the moving mechanism, the polishing mechanism comprises a polishing head (4) for polishing the workpiece (3) to be polished, a collecting box (5) is arranged opposite to the main frame (1), a controller (6) is arranged on the outer side of the main frame (1), and the turnover mechanism, the driving mechanism, the clamping mechanisms, the lifting mechanism, the moving mechanism and the polishing mechanism are respectively and electrically connected with the controller (6);
the turnover mechanism comprises a turnover table (7) rotatably connected with the main frame (1), the turnover table (7) is in a concave shape, turnover shafts (8) are fixedly connected to two ends of the turnover table (7), the turnover shafts (8) penetrate through the main frame (1) and extend out of the main frame (1), the main frame (1) is connected with the turnover shafts (8) through bearings (9), a turnover box (10) is fixedly connected to the outer side of the main frame (1), a turnover part is fixedly connected in the turnover box (10), the turnover part is in transmission connection with the turnover shafts (8), and the turnover part is electrically connected with the controller (6);
the overturning part comprises an overturning motor (11) fixedly connected to the outer wall of the main frame (1), an output shaft of the overturning motor (11) is fixedly connected with a first gear (12), the first gear (12) is meshed with a second gear (13), the second gear (13) is fixedly connected with the overturning shaft (8), and the overturning motor (11) is electrically connected with the controller (6);
the driving mechanism comprises a driving motor (14) fixedly connected in the overturning platform (7), an output shaft of the driving motor (14) extends out of the overturning platform (7) and is fixedly connected with the workbench (2), and the driving motor (14) is electrically connected with the controller (6);
the main frame (1) is hollow, the lifting mechanism is fixedly connected with a connecting block (20) at the top end of the main frame (1), a lifting motor (21) is fixedly connected to the top surface of the connecting block (20), a lead screw (22) is fixedly connected to an output shaft of the lifting motor (21), the lead screw (22) penetrates through the connecting block (20) and extends into the main frame (1), one end, extending into the main frame (1), of the lead screw (22) is movably connected with a sleeve shaft (23), the sleeve shaft (23) is fixedly connected with the moving mechanism, and the lifting motor (21) is electrically connected with the controller (6);
moving mechanism include with the cross slide rail of cover axle (23) rigid coupling, the cross slide rail include with first slide rail (24) of cover axle (23) rigid coupling, the one end of first slide rail (24) is equipped with first motor (26), sliding connection has second slide rail (25) on first slide rail (24), the one end of second slide rail (25) is equipped with second motor (27), second slide rail (25) slide rail rigid coupling has grinding machanism, first motor (26) with second motor (27) respectively with controller (6) electric connection.
2. The grinding device for machine-manufactured parts according to claim 1, characterized in that: the automatic overturning device is characterized in that a gap exists between the workbench (2) and the overturning platform (7), a plurality of grooves (15) are formed in the bottom surface of the workbench (2) at equal intervals, a sphere (16) is embedded in each groove (15), and the lowest point of the sphere (16) is abutted to the top surface of the overturning platform (7).
3. The grinding device for machine-manufactured parts according to claim 2, characterized in that: the shape of workstation (2) is the character cut in bas-relief, the both ends symmetry of workstation (2) is equipped with cavity (17), the rigid coupling has in cavity (17) clamping mechanism.
4. The polishing device for machine-manufactured parts as claimed in claim 3, wherein: clamping mechanism includes the rigid coupling and is in electric telescopic cylinder (18) of cavity (17) inner wall, the output rigid coupling of electric telescopic cylinder (18) has clamping rod (19), clamping rod (19) pass the inner wall of workstation (2) stretches out outside workstation (2), electric telescopic cylinder (18) with controller (6) electric connection, clamping rod (19) butt has treat work piece (3) of polishing.
5. The grinding device for machine-manufactured parts according to claim 1, characterized in that: the polishing mechanism comprises a polishing motor (28) fixedly connected with a second sliding rail (25), an output shaft of the polishing motor (28) is fixedly connected with the polishing head (4), and the polishing motor (28) is electrically connected with the controller (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210085125.3A CN114393486B (en) | 2022-01-25 | 2022-01-25 | Grinding device for machine-building spare part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210085125.3A CN114393486B (en) | 2022-01-25 | 2022-01-25 | Grinding device for machine-building spare part |
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| CN114393486A CN114393486A (en) | 2022-04-26 |
| CN114393486B true CN114393486B (en) | 2022-11-18 |
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| CN111300185A (en) * | 2019-12-20 | 2020-06-19 | 武文家 | Mechanical plate polishing device with overturning function |
| CN212311619U (en) * | 2020-03-31 | 2021-01-08 | 周中波 | Hardware mould convenient to hardware fitting deckle edge is polished |
| CN212762516U (en) * | 2020-08-13 | 2021-03-23 | 甘翠 | Subway vehicle body part grinding device |
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