CN111251145A - Multifunctional polishing machine - Google Patents

Multifunctional polishing machine Download PDF

Info

Publication number
CN111251145A
CN111251145A CN202010128166.7A CN202010128166A CN111251145A CN 111251145 A CN111251145 A CN 111251145A CN 202010128166 A CN202010128166 A CN 202010128166A CN 111251145 A CN111251145 A CN 111251145A
Authority
CN
China
Prior art keywords
fixed
gear
hexagonal
support frame
chassis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010128166.7A
Other languages
Chinese (zh)
Inventor
李传红
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Laiwu Vocational and Technical College
Original Assignee
Laiwu Vocational and Technical College
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Laiwu Vocational and Technical College filed Critical Laiwu Vocational and Technical College
Priority to CN202010128166.7A priority Critical patent/CN111251145A/en
Publication of CN111251145A publication Critical patent/CN111251145A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00Other grinding machines or devices
    • B24B27/0076Other grinding machines or devices grinding machines comprising two or more grinding tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00Other grinding machines or devices
    • B24B27/0092Grinding attachments for lathes or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/02Frames; Beds; Carriages

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

The invention discloses a multifunctional polishing machine which comprises a base, a workbench, a fixing nut, a guide cylinder, a screw rod, a guide pillar, a lifting rotating handle, a right support frame, a left support frame, a polishing machine, a connecting shaft, a bearing seat, a worm, an angle gear and an adjusting rotating handle, wherein the top of the base is fixedly provided with the horizontal workbench, the two sides of the top surface of the workbench are welded with the fixing nut and the guide cylinder which are symmetrically arranged, the screw rod is in threaded connection with the fixing nut, the guide pillar is in up-and-down sliding connection along the guide cylinder, the screw rod and the lifting rotating handle at the bottom synchronously rotate, the top parts of the fixing nut and the guide cylinder at the two sides are respectively fixedly provided with the right support frame and the left support frame, and the left end and. The angle between the grinding wheel and the horizontal plane is changed, so that the inclined plane can be conveniently ground, irregular objects can be conveniently ground, the surface of the object is prevented from being damaged due to overlarge pressure, the grinding wheel is well protected from being blocked and damaged, and the multifunctional grinding wheel has multiple functions and strong practicability.

Description

Multifunctional polishing machine
Technical Field
The invention relates to a polishing machine, in particular to a multifunctional polishing machine.
Background
The polishing machine is a manual electric tool for polishing metal surfaces. The method is specially used for carrying out effect treatment on the surfaces and pipes of metal products such as steel, aluminum, copper and the like, quickly repairing deep scratches and slightly scraping, and quickly grinding and polishing. When buffing machine polished metal product, the arm grips easily for a long time and is tired, influences work efficiency, and fixed buffing machine can't polish to the goods of unevenness, need handheld metal product laminating emery wheel work, increases the potential safety hazard, and to the metal surface of irregularity and unevenness, the emery wheel is obstructed and suffers destruction easily, and can't laminate metal surface, and it is very difficult to polish.
Disclosure of Invention
The invention aims to provide a multifunctional polishing machine to solve the technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multifunctional polishing machine comprises a base, a workbench, a fixing nut, a guide cylinder, a screw, a guide pillar, a lifting rotating handle, a right support frame, a left support frame, a polishing machine, a connecting shaft, a bearing seat, a worm, an angle gear and an adjusting rotating handle, wherein the top of the base is fixedly provided with a horizontal workbench, the two sides of the top surface of the workbench are welded with the fixing nut and the guide cylinder which are symmetrical in position, the screw is in threaded connection with the fixing nut, the guide pillar is in up-and-down sliding connection along the guide cylinder, the screw and the lifting rotating handle at the bottom synchronously rotate, the top parts of the fixing nut and the guide cylinder at the two sides are respectively fixedly provided with the right support frame and the left support frame, the left end and the right end of the polishing machine are respectively fixedly provided with the connecting shaft, the connecting shaft is respectively connected with the right support frame and the left support frame through the, and the worm is fixed with the connecting shaft, and the worm and the adjusting rotating handle at the top synchronously rotate.
On the basis of the technical scheme, the polishing machine comprises a motor, a grinding tool, a top disc, a gear set, a base disc, a bolt and a compression spring, wherein the grinding tool is installed at the bottom of the motor, the top disc is fixed at the top of the base disc, the gear set is installed inside the base disc, the base disc is fixed with the bottom of the motor through the bolt, and the three compression spring grinding tools are installed.
On the basis of the technical scheme, the grinding tool comprises a main shaft, a driving grinding wheel, hexagonal prisms, sliding columns, baffles, fixing columns and driven grinding wheels, the main shaft is fixed with a motor output shaft, the driving grinding wheel is fixed at the bottom of the main shaft, the hexagonal prisms are integrally formed on the upper portion of the main shaft, the three sliding columns are of hexagonal prism structures, circular baffles are respectively fixed on the upper portion and the lower portion of each sliding column, the fixing columns are welded at the bottoms of the sliding columns, and the driven grinding wheels are fixed at the bottoms of the fixing columns.
On the basis of the technical scheme, the top disc comprises hexagonal holes and bolt holes A, the hexagonal holes penetrate through the center and the circumference of the top disc respectively, and the bolt holes A penetrate through the top disc at equal angles on the circumference.
On the basis of the technical scheme, the gear set comprises a sun wheel, a planet wheel, a connecting cylinder, a driving hexagonal groove and a driven hexagonal groove, the sun wheel is meshed with the planet wheel with the same structure as the sun wheel, the connecting cylinder is fixed at the bottoms of the sun wheel and the three planet wheels respectively, the driving hexagonal groove penetrates through the center of the sun wheel from top to bottom, the driven hexagonal groove penetrates through the center of the planet wheel from top to bottom, the hexagonal prism is fixed in the driving hexagonal groove, and the sliding columns are connected with the three driven hexagonal grooves in a sliding mode from top to bottom.
On the basis of the technical scheme, the chassis comprises a gear groove, a bearing and a bolt hole B, a circular gear groove is formed in the upper portion of the chassis, the gear group is arranged in the gear groove, the top plate is fixed to the top of the gear groove, the bearing is respectively installed at the center of the bottom surface of the gear groove and the circumference of the gear groove, connecting cylinders of the sun wheel and the planet wheel are in interference fit with the bearing respectively, the connecting cylinders are three, and the bolt hole B penetrates through the chassis from top to bottom and corresponds to the upper position and the lower position of the three bolt hole A.
On the basis of the technical scheme, the three compression springs are respectively sleeved on the outer walls of the three sliding columns and are positioned at the bottom of the chassis.
Compared with the prior art, the invention has the following advantages: the screw rod can adjust the distance between the grinding tool and the workbench up and down through the lifting rotating handle, so that the grinding tool can conveniently grind different devices, the included angle between the grinding tool and the horizontal plane can be changed through the adjusting rotating handle, the inclined plane can be conveniently ground, the driven grinding wheel can move up and down through the compression spring and is tightly attached to the metal surface, irregular objects can be conveniently ground, the surface of the object is prevented from being damaged by overlarge pressure, the grinding wheel is well protected from being blocked and damaged, and the screw rod is multifunctional and strong in practicability.
Drawings
Fig. 1 is a schematic view of the external structure of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a side view of the present invention.
Figure 4 is a front view of the present invention polisher.
Figure 5 is a schematic view of the assembly of the grinder of the present invention.
Fig. 6 is a schematic view of the exterior structure of the abrasive article of the present invention.
Fig. 7 is a schematic view of the appearance structure of the top plate of the present invention.
FIG. 8 is a schematic view of the gear assembly of the present invention.
Fig. 9 is a schematic view of the appearance structure of the chassis of the present invention.
In the figure: 1. the grinding machine comprises a base, 2, a workbench, 3, a fixing nut, 4, a guide cylinder, 5, a screw, 6, a guide column, 7, a lifting rotating handle, 8, a right support frame, 9, a left support frame, 10, a polishing machine, 11, a connecting shaft, 12, a bearing seat, 13, a holding rod, 14, an angle gear, 15, an adjusting rotating handle, 16, a motor, 17, a grinding tool, 18, a top disc, 19, a gear set, 20, a chassis, 21, a bolt, 22, a compression spring, 23, a main shaft, 24, a driving grinding wheel, 25, a hexagonal prism, 26, a sliding column, 27, a baffle, 28, a fixing column, 29, a driven grinding wheel, 30, a hexagonal hole, 31, a bolt hole A, 32, a sun wheel, 33, a planet wheel, 34, a connecting cylinder, 35, a driving hexagonal groove, 36, a driven hexagonal groove, 37, a gear groove, 38, a bearing, 39 and a bolt hole.
Detailed Description
The invention is explained in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1-9, a multifunctional polishing machine comprises a base 1, a workbench 2, a fixing nut 3, a guide cylinder 4, a screw 5, a guide post 6, a lifting rotating handle 7, a right support frame 8, a left support frame 9, a polishing machine 10, a connecting shaft 11, a bearing seat 12, a worm 13, an angle gear 14 and an adjusting rotating handle 15, wherein the top of the base 1 is fixed with the horizontal workbench 2, two sides of the top surface of the workbench 2 are welded with the fixing nut 3 and the guide cylinder 4 which are symmetrical in position, the screw 5 is in threaded connection with the fixing nut 3, the guide post 6 is in up-down sliding connection along the guide cylinder 4, the screw 5 and the lifting rotating handle 7 at the bottom rotate synchronously, the top of the fixing nut 3 and the guide cylinder 4 at two sides are respectively fixed with the right support frame 8 and the left support frame 9, the left end and the right end of the polishing machine 10 are respectively fixed with the connecting shaft 11, the connecting shaft 11 is respectively connected with, the rear side of the supporting frame 8 is provided with a vertical worm 13, the angle gear 14 is connected with the worm 13 and fixed with the connecting shaft 11, and the worm 13 and the adjusting rotating handle 15 at the top synchronously rotate.
The polishing machine 10 comprises a motor 16, a grinding tool 17, a top disc 18, a gear set 19, a bottom disc 20, a bolt 21 and a compression spring 22, wherein the grinding tool 17 is installed at the bottom of the motor 16, the top disc 18 is fixed at the top of the bottom disc 20, the gear set 19 is installed inside the bottom disc 20, the bottom disc 20 is fixed with the bottom of the motor 16 through the bolt 21, and the three compression springs 22, namely the grinding tool 17, are installed.
The grinding tool 17 comprises a main shaft 23, a driving grinding wheel 24, a hexagonal prism 25, sliding columns 26, baffles 27, fixing columns 28 and driven grinding wheels 29, wherein the main shaft 23 is fixed with an output shaft of the motor 16, the driving grinding wheel 24 is fixed at the bottom of the main shaft 23, the hexagonal prism 25 is integrally formed at the upper part of the main shaft 23, the three sliding columns 26 are of a hexagonal prism structure, the upper part and the lower part of each sliding column are respectively fixed with the circular baffles 27, the fixing columns 28 are welded at the bottoms of the sliding columns 26, and the driven grinding wheels 29 are fixed at the bottoms of the fixing columns.
The top disc 18 comprises hexagonal holes 30 and bolt holes A31, the hexagonal holes 30 penetrate through the center and the circumference of the top disc 18 respectively, and the three bolt holes A31 penetrate through the top disc 18 at equal angles on the circumference.
The gear set 19 includes sun gear 32, planet wheel 33, connecting cylinder 34, initiative hexagonal groove 35, driven hexagonal groove 36, sun gear 32 meshes with the three planet wheel 33 that the structure is the same in the outside, sun gear 32 and three planet wheel 33 bottom are fixed with connecting cylinder 34 respectively, it has initiative hexagonal groove 35 to run through from top to bottom at the sun gear 32 center, it has driven hexagonal groove 36 to run through from top to bottom at the planet wheel 33 center, hexagonal prism 25 is fixed in initiative hexagonal groove 35, and is three sliding column 26 is sliding connection from top to bottom with three driven hexagonal groove 36 respectively.
Chassis 20 includes gear groove 37, bearing 38, bolt hole B39, open on chassis 20 upper portion has circular gear groove 37, gear train 19 is arranged in gear groove 37, it is fixed with gear groove 37 top to push up dish 18, bearing 38 is installed respectively with the circumference in gear groove 37 bottom surface center, sun gear 32 and planet wheel 33's connecting cylinder 34 respectively with bearing 38 interference fit, three run through in chassis 20 from top to bottom in bolt hole B39, and correspond with three bolt hole A31 upper and lower position.
The three compression springs 22 are respectively sleeved on the outer walls of the three sliding columns 26 and are positioned at the bottom of the chassis 20.
The working principle of the invention is as follows: to the size of metal product, through rotatory lift commentaries on classics the height of adjusting the grinding apparatus, when polishing to the inclined plane, the rotation regulation is changeed the contained angle that changes grinding apparatus and horizontal plane and is polished, and driven emery wheel can stretch out and draw back through compression spring when touching the metal surface of unevenness, is convenient for hug closely the metal surface and polishes, has also prolonged driven emery wheel's life.
The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that variations, modifications, substitutions and alterations can be made in the embodiment without departing from the principles and spirit of the invention.

Claims (7)

1. The utility model provides a multi-functional buffing machine, includes base (1), workstation (2), fixation nut (3), guide cylinder (4), screw rod (5), guide pillar (6), goes up and down to change handle (7), right branch strut (8), left branch strut (9), buffing machine (10), connecting axle (11), bearing frame (12), worm (13), angle gear (14), regulation are changeed handle (15), its characterized in that: the polishing machine is characterized in that a horizontal workbench (2) is fixed on the top of the base (1), fixing nuts (3) and guide cylinders (4) which are symmetrical in position are welded on two sides of the top surface of the workbench (2), a screw (5) is in threaded connection with the fixing nuts (3), guide pillars (6) are in up-and-down sliding connection along the guide cylinders (4), the screw (5) rotates synchronously with a lifting rotating handle (7) at the bottom, a right support frame (8) and a left support frame (9) are respectively fixed on the tops of the fixing nuts (3) and the guide cylinders (4) at two sides, connecting shafts (11) are respectively fixed at the left end and the right end of the polishing machine (10), the connecting shafts (11) are respectively connected with the right support frame (8) and the left support frame (9) through bearing seats (12), a worm (13) in the vertical direction is installed on the rear side of the support frame (8), and angle gears (14) are, and is fixed with the connecting shaft (11), and the worm (13) and the adjusting rotating handle (15) on the top synchronously rotate.
2. A multifunction grinder as defined in claim 1, wherein: the polishing machine (10) comprises a motor (16), a grinding tool (17), a top disc (18), a gear set (19), a chassis (20), bolts (21) and compression springs (22), wherein the grinding tool (17) is installed at the bottom of the motor (16), the top disc (18) is fixed on the top of the chassis (20), the gear set (19) is installed inside the chassis (20), the chassis (20) is fixed to the bottom of the motor (16) through the bolts (21), and the compression springs (22) are installed on the grinding tool (17).
3. A multifunction grinder as set forth in claim 2, wherein: the grinding tool (17) comprises a main shaft (23), a driving grinding wheel (24), a hexagonal prism (25), a sliding column (26), a baffle (27), a fixed column (28) and a driven grinding wheel (29), the main shaft (23) is fixed with an output shaft of a motor (16), the driving grinding wheel (24) is fixed at the bottom of the main shaft (23), the hexagonal prism (25) is integrally formed at the upper part of the main shaft (23), the three sliding columns (26) are of a hexagonal prism structure and are vertically and respectively fixed with a circular baffle (27), the fixed column (28) is welded at the bottom of each sliding column (26), and the driven grinding wheel (29) is fixed at the bottom of each fixed column (28).
4. A multifunction grinder as set forth in claim 2, wherein: the top disc (18) comprises hexagonal holes (30) and bolt holes A (31), the hexagonal holes (30) are respectively penetrated through the center and the circumference of the top disc (18), and the three bolt holes A (31) are penetrated through the top disc (18) at equal angles on the circumference.
5. A multifunction grinder as set forth in claim 2, wherein: gear train (19) are including sun gear (32), planet wheel (33), connecting cylinder (34), initiative hexagonal groove (35), driven hexagonal groove (36), sun gear (32) mesh with three planet wheel (33) that the structure is the same in the outside, sun gear (32) and three planet wheel (33) bottom are fixed with connecting cylinder (34) respectively, run through initiative hexagonal groove (35) from top to bottom in sun gear (32) center, run through driven hexagonal groove (36) from top to bottom in planet wheel (33) center, hexagonal prism (25) are fixed in initiative hexagonal groove (35), and are three sliding column (26) are sliding connection from top to bottom with three driven hexagonal groove (36) respectively.
6. A multifunction grinder as set forth in claim 2, wherein: chassis (20) include gear groove (37), bearing (38), bolt hole B (39), open on chassis (20) upper portion has circular gear groove (37), gear train (19) are arranged in gear groove (37), it is fixed with gear groove (37) top to push up dish (18), bearing (38) are installed respectively with the circumference in gear groove (37) bottom surface center, connecting cylinder (34) of sun gear (32) and planet wheel (33) respectively with bearing (38) interference fit, three run through in chassis (20) about bolt hole B (39), and correspond with three bolt hole A (31) upper and lower position.
7. A multifunction grinder as set forth in claim 2, wherein: the three compression springs (22) are respectively sleeved on the outer walls of the three sliding columns (26) and are positioned at the bottom of the chassis (20).
CN202010128166.7A 2020-02-28 2020-02-28 Multifunctional polishing machine Pending CN111251145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010128166.7A CN111251145A (en) 2020-02-28 2020-02-28 Multifunctional polishing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010128166.7A CN111251145A (en) 2020-02-28 2020-02-28 Multifunctional polishing machine

Publications (1)

Publication Number Publication Date
CN111251145A true CN111251145A (en) 2020-06-09

Family

ID=70944500

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010128166.7A Pending CN111251145A (en) 2020-02-28 2020-02-28 Multifunctional polishing machine

Country Status (1)

Country Link
CN (1) CN111251145A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111761442A (en) * 2020-07-10 2020-10-13 广州妙志家居有限公司 Table polishing and perforating device based on mechanical principle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506652A3 (en) * 1981-05-29 1982-12-03 Lgb Bricaud Biaxially adjustable tool head for rectifying machine - can swivel about two normal axes on elevator slide with work on orthogonal slide below
WO2018083571A1 (en) * 2016-11-04 2018-05-11 Infinititech Srl Equipment for surface processing of plate-shaped elements
CN108818209A (en) * 2018-06-28 2018-11-16 湖州德盛塑料包装材料有限公司 One kind being used for plastic packing product corner angle grinding device
CN109333233A (en) * 2018-11-20 2019-02-15 鹤山市正大汽车玻璃有限公司 A kind of rotary polishing apparatus
CN209831209U (en) * 2019-02-21 2019-12-24 苏州神竣自动化有限公司 Intelligent equipment part machining polisher
CN110625483A (en) * 2019-10-12 2019-12-31 重庆神工农业装备有限责任公司 Grinding machine for wind power blade

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506652A3 (en) * 1981-05-29 1982-12-03 Lgb Bricaud Biaxially adjustable tool head for rectifying machine - can swivel about two normal axes on elevator slide with work on orthogonal slide below
WO2018083571A1 (en) * 2016-11-04 2018-05-11 Infinititech Srl Equipment for surface processing of plate-shaped elements
CN108818209A (en) * 2018-06-28 2018-11-16 湖州德盛塑料包装材料有限公司 One kind being used for plastic packing product corner angle grinding device
CN109333233A (en) * 2018-11-20 2019-02-15 鹤山市正大汽车玻璃有限公司 A kind of rotary polishing apparatus
CN209831209U (en) * 2019-02-21 2019-12-24 苏州神竣自动化有限公司 Intelligent equipment part machining polisher
CN110625483A (en) * 2019-10-12 2019-12-31 重庆神工农业装备有限责任公司 Grinding machine for wind power blade

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111761442A (en) * 2020-07-10 2020-10-13 广州妙志家居有限公司 Table polishing and perforating device based on mechanical principle
CN111761442B (en) * 2020-07-10 2021-10-15 张秀蓉 Table polishing and perforating device based on mechanical principle

Similar Documents

Publication Publication Date Title
CN207272947U (en) A kind of quick sanding apparatus for lamp stand
CN213998800U (en) Polishing treatment tool for laser cladding treatment workpiece
CN213054122U (en) Automobile parts grinding device convenient to angle regulation
CN2374303Y (en) Mobile multifunctional abrasive band grinding and polishing appts.
CN206898965U (en) A kind of machine-building dual drive sanding apparatus
CN111251145A (en) Multifunctional polishing machine
CN213646959U (en) Car sheet metal component equipment of polishing
CN213034307U (en) Multi-station stone polishing machine
CN218837062U (en) Grinding machine for nut production and processing
CN2889608Y (en) Stone gyration surface polisher
CN202200156U (en) A mandril burnishing device
CN214489914U (en) Automobile wheel hub outer lane surface treatment device
CN110877117B (en) A processing milling machine for milling cylinder
CN213136062U (en) Universal cutter grinding machine
CN211305864U (en) Environment-friendly grinding machine for machining
CN110193769B (en) Gradual change selectable wheel-replacement-free full-automatic grinding machine device and use method
CN209811972U (en) Abrasive belt grinding machine
CN203197701U (en) Novel stone profile-modeling grindstone
CN220533788U (en) Grinding and polishing equipment
CN221539244U (en) Polishing device for automobile part production
CN215201289U (en) Rotary type grinding machine machining table
CN220718925U (en) Hardware plate polishing machine
CN210524632U (en) Grinding machine fixing device for cylindrical grinding of bar
CN215919932U (en) Nodular cast iron pipe inner wall grinding device
CN217750686U (en) Axle type part grinding device for machining

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20200609

RJ01 Rejection of invention patent application after publication