CN109483393B - Special tool and method for grinding surface of sapphire crystal - Google Patents

Special tool and method for grinding surface of sapphire crystal Download PDF

Info

Publication number
CN109483393B
CN109483393B CN201811419755.XA CN201811419755A CN109483393B CN 109483393 B CN109483393 B CN 109483393B CN 201811419755 A CN201811419755 A CN 201811419755A CN 109483393 B CN109483393 B CN 109483393B
Authority
CN
China
Prior art keywords
grinding
hole
fixing
ball cover
rod
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.)
Active
Application number
CN201811419755.XA
Other languages
Chinese (zh)
Other versions
CN109483393A (en
Inventor
张岩
付吉国
董伟
赵然
周卫东
曾蕾
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.)
Sinohope Group Co ltd
Original Assignee
Sinohope Group Co ltd
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 Sinohope Group Co ltd filed Critical Sinohope Group Co ltd
Priority to CN201811419755.XA priority Critical patent/CN109483393B/en
Publication of CN109483393A publication Critical patent/CN109483393A/en
Application granted granted Critical
Publication of CN109483393B publication Critical patent/CN109483393B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B24B37/00Lapping machines or devices; Accessories
    • 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
    • B24B1/00Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • 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
    • B24B37/00Lapping machines or devices; Accessories
    • B24B37/34Accessories

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The utility model provides a sapphire crystal face lapping specialized tool, including the ball cover, settle the grinding miller pole in the ball cover surface through-hole, the spacing block card through-hole outside, there is the waist circle ball cover bottom, there is the gim peg in the fixed orifices, on the unable adjustment base of waist circle bottom, fixing device is provided with telescopic link and mesa, pole and outer tube in the telescopic link is provided with, outer tube inner wall both sides are equipped with the spout, the outer tube inner wall transversely sets up the adjustment tank, the mesa upper surface is equipped with the arrangement groove, there is the fixed band at the fixing base middle part, there is the hole of placing. The special method for grinding the surface of the sapphire crystal ensures that the sapphire crystal cannot fall off by using the fixing belt, and the crystal with different sizes is met according to the change of the crystal size.

Description

Special tool and method for grinding surface of sapphire crystal
Technical Field
The invention relates to the technical field of sapphire crystal correlation, in particular to a special tool and a method for grinding the surface of a sapphire crystal.
Background
Sapphire crystals, an important technical crystal, have been widely used in many fields of scientific technology, national defense and civil industry, and electronic technology. Such as infrared-transmitting window materials, substrate substrates in the microelectronics field, laser substrates, optical components and other applications. Grinding of the grown sapphire crystal is very necessary, but the existing tools are not special, such as grinding tools using diamond, and the design and development of special tools are very necessary due to different properties.
However, the prior art sapphire crystal grinding tools are independent or fixed and hold the sapphire for grinding, which is not favorable for holding the sapphire and is easy to damage or slip. For a handheld grinding tool, the handheld grinding tool is only suitable for leveling and repairing surfaces, and a motor type fixed point tool driven by a frame faces a big problem that a slope surface or a surface which is not vertical or horizontal is difficult to be subjected to targeted treatment according to a specific inclination requirement, a common frame type tool can only meet the grinding requirements of angles such as 0 degree, 45 degrees and 90 degrees, and the grinding requirements of the vertical surface for a plurality of angles cannot be met, so that no suitable tool is provided.
Disclosure of Invention
The invention aims to provide a special tool for grinding the surface of a sapphire crystal, which aims to solve the problems that the capacity of a handheld tool of a sapphire crystal grinding tool in the prior art is low, the adaptability of a fixed tool is not strong, and the grinding requirements of a plurality of positions and different angles on the surface cannot be met.
In order to achieve the purpose, the invention provides the following technical scheme: a special tool and a method for grinding the surface of a sapphire crystal comprise a grinding rod, limiting blocks, a grinding head, a ball cover, through holes, a fixing device, a base, fixing bolts, fixing holes, a ball cover waist ring, a fixing seat, a placing groove, a table top, a telescopic rod, a fixing belt, a connecting rope, a placing hole, an inner rod, an outer pipe, an adjusting groove, a sliding block and a sliding groove, wherein the grinding rod is arranged in one through hole on the surface of the ball cover, the limiting blocks are arranged on two sides of the grinding rod and clamped outside the through hole, the ball cover waist ring is arranged on the outer side of the bottom of the ball cover, the fixing hole matched with the size of the through hole is arranged on the surface of the ball cover waist ring, the fixing bolt is arranged in the through hole corresponding to the position of the fixing hole, the bottom of the ball cover waist ring is fixed on the base, the fixing device is arranged above the, and the both sides of interior pole bottom all are provided with the slider, outer tube inner wall both sides all are provided with the spout, and settle in the spout has the slider, the outer tube inner wall transversely is provided with the adjustment tank, and the adjustment tank is linked together with the spout, the mesa upper surface is provided with the resettlement groove, and the resettlement groove top is provided with the fixing base, the fixing base middle part is provided with the fixed band, and the fixed band is connected with the fixing base inner wall through connecting the rope, the fixed band middle part is provided with places the hole.
Preferably, the rear end of the grinding rod is connected with the motor through a rotating shaft, the diameter of the grinding rod is smaller than that of the through hole, a grinding head is embedded at the front end of the grinding rod and is made of any one of copper, copper-tin alloy and resin copper, a mosquito-repellent incense type groove is formed in the contact surface of the grinding head, and filler is filled in the grinding head.
Preferably, the limiting blocks are two, the total diameter of the limiting blocks and the grinding rods is larger than that of the through holes, and the limiting blocks are matched with the edges of the through holes through lateral concave portions to fix the grinding rods.
Preferably, through holes are uniformly distributed on the surface of the ball cover, the aperture of each through hole is the same as that of each fixing hole, and a spherical crown type opening is formed in the lower portion of the ball cover.
Preferably, the head of the fixing bolt is sleeved with a rubber part with a slightly larger caliber.
Preferably, the waist ring of the ball cover is of a circular ring-shaped structure, the radian of the waist ring of the ball cover is the same as that of the opening of the spherical cap shape of the ball cover, and the inner side surface of the waist ring of the ball cover is connected with the ball cover through a roller.
Preferably, the fixing belt is made of elastic material.
Preferably, the number of the adjustment grooves is three.
Preferably, a method special for grinding the surface of the sapphire crystal is carried out by using the tool, and comprises the following steps:
A. fixing the sapphire in the placing groove and fixing the sapphire by using a fixing belt;
B. covering a ball cover, adjusting the position of the grinding rod inserted into the through hole, and aligning to the part needing grinding;
C. selecting a plurality of through holes matched in position on the ball cover and the waist ring, and inserting and fixing the through holes by using fixing bolts; the head of the fixing bolt is sleeved with a rubber part with a slightly larger caliber so as to avoid falling off after being inserted
D. Arranging a grinding head, arranging fillers with preset hardness and granularity in the mosquito-repellent incense type groove, and spraying grinding slurry;
E. inserting a grinding rod into the grinding head, inserting the grinding rod into the insertion hole, adjusting the insertion depth, fixing the grinding rod by using a limiting block, and abutting against a part to be ground on the surface of the sapphire crystal under the driving of a motor to grind;
F. finishing the grinding action; the ball cover and the accessories are detached, the cleaning is carried out, the grinding effect is confirmed, and the next position is selected to repeat the operations until the grinding plan of the sapphire crystal related to a plurality of positions is completed.
Compared with the prior art, the invention has the following beneficial effects: the invention provides an effective tool for effectively grinding the surface of a sapphire crystal. In the prior art, the hand-held tool can generate small force, the crystal is afraid of being damaged by forced polishing, and a fixed tool can only deal with very special plane polishing such as vertical, parallel and 45 degrees, and cannot provide a solution for complex grinding requirements. However, in reality, the polishing of the crystal is required to meet the polishing requirements of a plurality of parts, and each part is required to be polished at different angles, which means that the polishing tool is required to be fixed at different angles and different positions, which cannot be solved in the prior art. The special tool and the method for grinding the surface of the sapphire crystal can place the sapphire crystal in a placement groove, and ensure that the sapphire crystal cannot fall off by utilizing a fixing band, the fixing band is made of elastic material and can be changed according to the size of the crystal to meet the crystal with different sizes, meanwhile, a waist ring of a ball cover is arranged into a circular structure, the radian of the waist ring of the ball cover is the same as that of a spherical crown type opening of the ball cover, and the inner side surface of the waist ring of the ball cover is connected with the ball cover through rollers, so that a fixing device is added for a grinding rod to avoid the crystal from being damaged by skidding, moreover, a plurality of rollers are arranged in the inner surface of the waist ring to ensure that the waist ring can slide relative to the ball cover, thereby selecting a plurality of through holes matched with the positions on the ball cover and the waist ring, inserting and fixing bolts to prevent the ball cover from rolling, thereby ensuring the stability in the operation process, can adjust the height between base and the mesa, can grind the work with base and mesa card between user's thigh, also can shorten the length of telescopic link, arrange the workstation in with the base and use, improve the flexibility of using. The device just satisfied complicated surface grinding demand with very low cost, according to concrete demand, the trompil quantity and the position on surface can be adjusted, also can prepare the ball cover that a plurality of different through-holes were arranged in advance in order to make the selection to satisfy more diversified demand.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a sapphire crystal holding apparatus according to the present invention;
FIG. 3 is a schematic view of a sapphire crystal holder according to the present invention;
FIG. 4 is a schematic view of the inner structure of the telescopic tube of the present invention;
FIG. 5 is a schematic cross-sectional view of a telescopic tube according to the present invention.
In the figure: 1. grinding rod, 2, stopper, 3, grinding head, 4, ball cover, 5, through-hole, 6, fixing device, 7, base, 8, gim peg, 9, fixed orifices, 10, ball cover waist circle, 11, fixing base, 12, settling tank, 13, mesa, 14, telescopic link, 15, fixed band, 16, connection rope, 17, place the hole, 18, interior pole, 19, outer tube, 20, adjustment tank, 21, slider, 22, spout.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a special tool and a method for grinding the surface of a sapphire crystal comprise a grinding rod 1, a limiting block 2, a grinding head 3, a ball cover 4, a through hole 5, a fixing device 6, a base 7, a fixing bolt 8, a fixing hole 9, a ball cover waist ring 10, a fixing seat 11, a placing groove 12, a table top 13, a telescopic rod 14, a fixing band 15, a connecting rope 16, a placing hole 17, an inner rod 18, an outer tube 19, an adjusting groove 20, a sliding block 21 and a sliding groove 22, wherein the grinding rod 1 is arranged in one through hole 5 on the surface of the ball cover 4, the limiting blocks 2 are arranged on two sides of the grinding rod 1, the limiting blocks 2 are clamped outside the through hole 5, the ball cover waist ring 10 is arranged on the outer side of the bottom of the ball cover 4, the fixing hole 9 matched with the size of the through hole 5 is arranged on the surface of the ball cover waist ring 10, the fixing hole 9 is arranged in the through hole 5 corresponding to the, and a fixing device 6 is arranged above the base 7, the fixing device 6 is provided with a telescopic rod 14 and a table top 13, the telescopic rod 14 is provided with an inner rod 18 and an outer tube 19, two sides of the bottom of the inner rod 18 are respectively provided with a sliding block 21, two sides of the inner wall of the outer tube 19 are respectively provided with a sliding groove 22, the sliding grooves 22 are internally provided with the sliding blocks 21, the inner wall of the outer tube 19 is transversely provided with an adjusting groove 20, the adjusting groove 20 is communicated with the sliding grooves 22, the upper surface of the table top 13 is provided with a placing groove 12, a fixing seat 11 is arranged above the placing groove 12, the middle part of the fixing seat 11 is provided with a fixing belt 15, the fixing belt 15 is connected with the.
The rear end of a grinding rod 1 is connected with a motor through a rotating shaft, the diameter of the grinding rod 1 is smaller than that of a through hole 5, a grinding head 3 is embedded at the front end of the grinding rod 1, the material of the grinding head 3 is any one of copper, copper-tin alloy and resin copper, a mosquito-repellent incense type groove is formed in the contact surface of the grinding head 3, and filler is filled in the grinding head 3; the number of the limiting blocks 2 is two, the total diameter of the limiting blocks 2 and the grinding rod 1 is larger than that of the through hole 5, and the limiting blocks 2 are matched with the edge of the through hole 5 through lateral concave parts to fix the grinding rod 1; through holes 5 are uniformly distributed on the surface of the ball cover 4, the aperture of each through hole 5 is the same as that of the corresponding fixing hole 9, and a spherical crown type opening is formed in the lower portion of the ball cover 4;
the head of the fixing bolt 8 is sleeved with a rubber part with a slightly larger caliber; the waist ring 10 of the ball cover is arranged into a circular structure, the radian of the waist ring 10 of the ball cover is the same as that of the opening of the spherical cap shape of the ball cover 4, and the inner side surface of the waist ring 10 of the ball cover is connected with the ball cover 4 through a roller; the fixing belt 15 is made of elastic material; three adjusting grooves 20 are arranged;
the special method for grinding the surface of the sapphire crystal comprises the following steps:
A. fixing the sapphire in the placing groove and fixing the sapphire by using a fixing belt;
B. covering a ball cover, adjusting the position of the grinding rod inserted into the through hole, and aligning to the part needing grinding;
C. selecting a plurality of through holes matched in position on the ball cover and the waist ring, and inserting and fixing the through holes by using fixing bolts; the head of the fixing bolt is sleeved with a rubber part with a slightly larger caliber so as to avoid falling off after being inserted
D. Arranging a grinding head, arranging fillers with preset hardness and granularity in the mosquito-repellent incense type groove, and spraying grinding slurry;
E. inserting a grinding rod into the grinding head, inserting the grinding rod into the insertion hole, adjusting the insertion depth, fixing the grinding rod by using a limiting block, and abutting against a part to be ground on the surface of the sapphire crystal under the driving of a motor to grind;
F. finishing the grinding action; the ball cover and the accessories are detached, the cleaning is carried out, the grinding effect is confirmed, and the next position is selected to repeat the operations until the grinding plan of the sapphire crystal related to a plurality of positions is completed.
The structure of this application makes, the grinding rod can satisfy not equidimension, and the crystal grinding demand of different angles to the replacement of the ball cover of the different mode of arranging of a plurality of also can satisfy the grinding demand of crystal surface different positions and different angles, for example need wear the head into hemispherical on the crystal, just so can directly solve with this device, does not have the same or similar special device that grinds among the prior art at present, has originality.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (1)

1. A method special for grinding the surface of a sapphire crystal is implemented according to a special tool for grinding the surface of the sapphire crystal;
sapphire crystal surface grinding specialized tool includes grinding pole (1), stopper (2), grinding head (3), ball cover (4), through-hole (5), fixing device (6), base (7), gim peg (8), fixed orifices (9), ball cover waist circle (10), fixing base (11), arrangement groove (12), mesa (13), telescopic link (14), fixed band (15), connect rope (16), place hole (17), interior pole (18), outer tube (19), adjustment tank (20), slider (21) and spout (22), its characterized in that: a grinding rod (1) is arranged in one through hole (5) on the surface of the ball cover (4), limiting blocks (2) are arranged on two sides of the grinding rod (1), the limiting blocks (2) are clamped outside the through hole (5), a ball cover waist ring (10) is arranged on the outer side of the bottom of the ball cover (4), a fixing hole (9) matched with the through hole (5) in size is arranged on the surface of the ball cover waist ring (10), a fixing bolt (8) is arranged in the through hole (5) of the fixing hole (9) corresponding to the position, the bottom of the ball cover waist ring (10) is fixed on a base (7), a fixing device (6) is arranged above the base (7), the fixing device (6) is provided with a telescopic rod (14) and a table top (13), the telescopic rod (14) is provided with an inner rod (18) and an outer tube (19), and two sides of the bottom of the inner rod (18), outer tube (19) inner wall both sides all are provided with spout (22), and have slider (21) in spout (22), outer tube (19) inner wall transversely is provided with adjustment tank (20), and adjustment tank (20) are linked together with spout (22), mesa (13) upper surface is provided with arrangement groove (12), and is provided with fixing base (11) above arrangement groove (12), fixing base (11) middle part is provided with fixed band (15), and fixed band (15) are connected with fixing base (11) inner wall through connecting rope (16), fixed band (15) middle part is provided with places hole (17)
The rear end of the grinding rod (1) is connected with the motor through a rotating shaft, the diameter of the grinding rod (1) is smaller than that of the through hole (5), a grinding head (3) is embedded in the front end of the grinding rod (1), the grinding head (3) is made of any one of copper, copper-tin alloy and resin copper, a mosquito-repellent incense type groove is formed in the contact surface of the grinding head (3), and filler is filled in the grinding head (3);
the number of the limiting blocks (2) is two, the total diameter of the limiting blocks (2) and the grinding rod (1) is larger than that of the through hole (5), and the limiting blocks (2) are matched with the edges of the through hole (5) through lateral concave parts to fix the grinding rod (1);
through holes (5) are uniformly distributed on the surface of the ball cover (4), the aperture of each through hole (5) is the same as that of the corresponding fixing hole (9), and a spherical crown type opening is formed in the lower portion of the ball cover (4);
the head of the fixing bolt (8) is sleeved with a rubber part with a slightly larger caliber;
the spherical cover waist ring (10) is of an annular structure, the radian of the spherical cover waist ring (10) is the same as that of the opening of the spherical crown shape of the spherical cover (4), and the inner side surface of the spherical cover waist ring (10) is connected with the spherical cover (4) through a roller;
the fixing belt (15) is made of elastic material;
three adjusting grooves (20) are arranged;
the method is characterized in that the method special for grinding the surface of the sapphire crystal comprises the following steps:
A. fixing the sapphire in the placing groove and fixing the sapphire by using a fixing belt;
B. covering a ball cover, adjusting the position of the grinding rod inserted into the through hole, and aligning to the part needing grinding;
C. selecting a plurality of through holes matched in position on the ball cover and the waist ring, and inserting and fixing the through holes by using fixing bolts; the head part of the fixing bolt is sleeved with a rubber part with a slightly larger caliber so as to avoid falling off after being inserted;
D. arranging a grinding head, arranging fillers with preset hardness and granularity in the mosquito-repellent incense type groove, and spraying grinding slurry;
E. inserting a grinding rod into the grinding head, inserting the grinding rod into the insertion hole, adjusting the insertion depth, fixing the grinding rod by using a limiting block, and abutting against a part to be ground on the surface of the sapphire crystal under the driving of a motor to grind;
F. finishing the grinding action; and (4) detaching the ball cover and the accessories, cleaning and confirming the grinding effect, and selecting the next position to repeat the operations until the grinding plan of a plurality of positions of the sapphire crystal is completed.
CN201811419755.XA 2018-11-26 2018-11-26 Special tool and method for grinding surface of sapphire crystal Active CN109483393B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811419755.XA CN109483393B (en) 2018-11-26 2018-11-26 Special tool and method for grinding surface of sapphire crystal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811419755.XA CN109483393B (en) 2018-11-26 2018-11-26 Special tool and method for grinding surface of sapphire crystal

Publications (2)

Publication Number Publication Date
CN109483393A CN109483393A (en) 2019-03-19
CN109483393B true CN109483393B (en) 2021-02-19

Family

ID=65696671

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811419755.XA Active CN109483393B (en) 2018-11-26 2018-11-26 Special tool and method for grinding surface of sapphire crystal

Country Status (1)

Country Link
CN (1) CN109483393B (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4329822C2 (en) * 1992-09-04 1996-09-05 Honda Motor Co Ltd Gear finishing device
JP2002535151A (en) * 1998-12-01 2002-10-22 ユニヴァーシティ カレッジ ロンドン Polishing apparatus and method
US6386947B2 (en) * 2000-02-29 2002-05-14 Applied Materials, Inc. Method and apparatus for detecting wafer slipouts
CN204975435U (en) * 2015-09-02 2016-01-20 吉林中意核管道制造有限公司 Large -scale pipe fitting multi -angle multiposition drilling frock
CN105773403B (en) * 2016-03-11 2018-06-12 浙江工业大学 A kind of grinding and polishing machine actuating device with unreasonable rotating ratio
CN205928152U (en) * 2016-08-09 2017-02-08 山东省计算中心(国家超级计算济南中心) Multiaxis coordinated type grinding device
CN107932260A (en) * 2017-11-24 2018-04-20 贵州新锦竹木制品有限公司 A kind of artistic bamboo-wood product surface polishing grinding device

Also Published As

Publication number Publication date
CN109483393A (en) 2019-03-19

Similar Documents

Publication Publication Date Title
CN204108775U (en) A kind of full-automatic water-drill grinding and polishing machine
CN100467223C (en) Sphericity part fixed abrasive lapping method
CN104440497A (en) Polishing device and method for cambered surfaces of mobile phone panels
CN113510537A (en) Grinding method and grinding device for high-precision sapphire valve seat ball groove
CN109483393B (en) Special tool and method for grinding surface of sapphire crystal
CN105583720A (en) Method Of Polishing SiC Substrate
CN107627226B (en) A kind of elasticity concretion abrasive and its preparation method and application
CN209000866U (en) A kind of face grinder assembly for wafer production processing
CN211277766U (en) Optical lens grinding device
CN207448136U (en) A kind of ballastless track bed board expansion joint sander
CN103522167B (en) Grinding head and lapping device
CN208992362U (en) The angle lap structure of chip angle lap machine and chuck for chip angle lap machine
CN205904872U (en) A bistrique for on stone edging machine of longmen
KR20160054120A (en) Polishing device using magneto-rheological fluid
JP2020175497A (en) Jewel polishing cutler device
CN217552090U (en) Polishing device for single crystal diamond
CN204913509U (en) Burnishing machine for mobile phone film with location tray
CN107877301A (en) A kind of method for grinding using eyeglass grinding attachment
CN214723252U (en) Floating quick-change crankshaft polishing device
CN204893684U (en) Automobile shock absorber utensils valve line grinder
CN204772139U (en) Burnish sand wheel and PCB board grinder
CN210819035U (en) Automatic polishing control device for nano polycrystalline diamond
CN207139446U (en) Surface automatically grinding device
CN201872080U (en) Grinding device of grinder limit column
CN211029621U (en) Anti-deflection guide wheel for numerical control grinding machine

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
GR01 Patent grant
GR01 Patent grant
PP01 Preservation of patent right
PP01 Preservation of patent right

Effective date of registration: 20230329

Granted publication date: 20210219