CN110340787B - Vertical double-sided grinding equipment for sapphire slices - Google Patents

Vertical double-sided grinding equipment for sapphire slices Download PDF

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Publication number
CN110340787B
CN110340787B CN201910744794.5A CN201910744794A CN110340787B CN 110340787 B CN110340787 B CN 110340787B CN 201910744794 A CN201910744794 A CN 201910744794A CN 110340787 B CN110340787 B CN 110340787B
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China
Prior art keywords
gear
grinding
grinding disc
disc
ring
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Active
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CN201910744794.5A
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Chinese (zh)
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CN110340787A (en
Inventor
郁炜
冯凯萍
赵天晨
尹涛
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Zhejiang Fuleide Quartz Technology Co ltd
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Quzhou University
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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
    • B24B27/0046—Column grinding machines
    • 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
    • B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
    • 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
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
    • B24B37/07—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool
    • B24B37/08—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for double side lapping
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • B24B7/17—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings for simultaneously grinding opposite and parallel end faces, e.g. double disc grinders
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/228—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding thin, brittle parts, e.g. semiconductors, wafers

Abstract

The invention relates to the technical field of sapphire polishing equipment, and provides vertical double-sided grinding equipment for sapphire slices, which comprises: the grinding device comprises a first grinding disc and a second grinding disc, wherein the first grinding disc and the second grinding disc are arranged in parallel, and the first grinding disc and the second grinding disc can be switched between a first state of not being vertical to the ground and a second state of being vertical to the ground. According to the vertical double-side grinding equipment for the sapphire slices, the two grinding discs which are parallel to each other are arranged, the grinding discs are in the first state when the sapphire slices to be ground are placed, and the grinding discs are in the first state and are arranged perpendicular to the ground when the sapphire slices are ground, so that the influence of the gravity of the sapphire slices on the removal amount is eliminated, and the sapphire slices are prevented from being scrapped.

Description

Vertical double-sided grinding equipment for sapphire slices
Technical Field
The invention relates to the technical field of sapphire polishing equipment, in particular to vertical double-sided grinding equipment for sapphire slices.
Background
The sapphire single crystal has the characteristics of high hardness, good light transmittance, high wear resistance, good chemical stability, good heat conductivity, electromagnetic insulation property, excellent mechanical property and the like, and is widely used as a window and sapphire wafer material in advanced scientific and technological research of national defense industry and civil fields.
Sapphire is brittle and is a typical difficult-to-process material, and at present, the preparation of a sapphire wafer mainly comprises the working procedures of slicing, flattening, polishing and the like. In the flattening process, the cutting marks generated in the wire cutting process are mainly removed through grinding, and a smoother surface is obtained, so that a good basis is provided for subsequent polishing.
However, in the grinding process, both free abrasive grinding and fixed abrasive grinding are influenced by the gravity of the sapphire, and the phenomenon that the removal amount of two surfaces of the sapphire slice is inconsistent occurs, so that the sapphire slice is scrapped.
Disclosure of Invention
In view of the above, the present invention is directed to a vertical double-side grinding apparatus for sapphire slices, which is capable of eliminating the influence of the gravity of a sapphire slice on the removal amount by arranging two parallel grinding disks, wherein the grinding disks are arranged perpendicular to the ground when the sapphire slice is ground.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a vertical double-side grinding device for sapphire slices comprises: the grinding device comprises a first grinding disc and a second grinding disc, wherein the first grinding disc and the second grinding disc are arranged in parallel, and the first grinding disc and the second grinding disc can be switched between a first state of not being vertical to the ground and a second state of being vertical to the ground.
Preferably, vertical double-side lapping equipment of sapphire section is including rotating ring gear and drive gear, the parallel ground setting of axis that rotates the ring gear, and be equipped with the teeth of a cogwheel on the outer peripheral face, drive gear with the meshing of the teeth of a cogwheel, first abrasive disc with the rotatable installation of second abrasive disc rotate the inner periphery of ring gear.
Preferably, the vertical double-side grinding equipment for sapphire slices comprises a supporting gear, wherein the supporting gear and the driving gear are arranged on one side, close to the ground, of the rotating gear ring and are meshed with the rotating gear ring at the same time.
Preferably, the rotating shafts of the first and second grinding disks are arranged in the radial direction of the rotating ring gear.
Preferably, the vertical two-sided grinding device of sapphire section includes internal gear, outer ring gear and wandering star wheel, the internal gear with outer ring gear with first abrasive disc coaxial line sets up, and installs first abrasive disc is close to on the terminal surface of second abrasive disc, wandering star wheel simultaneously with the internal gear with the meshing of outer ring gear.
Preferably, the inner gear is rotatably mounted on the end face of the first grinding disk close to the second grinding disk, and the outer gear ring is fixed on the end face of the first grinding disk close to the second grinding disk.
Preferably, the vertical double-sided grinding equipment for sapphire slices comprises an internal gear motor, and a gear shaft of the internal gear penetrates through the first grinding disc and is connected with the internal gear motor.
Preferably, the vertical double-sided grinding equipment for sapphire slices comprises a grinding disc support ring, the outer periphery of the grinding disc support ring is fixedly connected with the inner periphery of the rotating gear ring, the axis of the grinding disc support ring is perpendicular to the axis of the rotating gear ring, and the end face, away from the second grinding disc, of the first grinding disc is rotatably connected with the grinding disc support ring.
Preferably, the vertical double-side grinding equipment for sapphire slices comprises a lifting device, and the second grinding disc is connected with the rotating gear ring through the lifting device.
Preferably, the lifting device comprises an air cylinder, one end of the air cylinder is fixedly connected with the rotating gear ring, and the other end of the air cylinder is rotatably connected with the second grinding disc.
Compared with the prior art, the vertical double-side grinding equipment for the sapphire slices is provided with the two grinding discs which are parallel to each other, the grinding discs are in the first state when the sapphire slices to be ground are placed, and the grinding discs are in the first state and are arranged perpendicular to the ground when the sapphire slices are ground, so that the influence of the gravity of the sapphire slices on the removal amount is eliminated, and the sapphire slices are prevented from being scrapped.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a vertical double-side grinding apparatus for sapphire slicing according to the present invention;
FIG. 2 is a front view of the vertical double-side grinding apparatus for sapphire slices of the present invention;
FIG. 3 is a left side view of the vertical double-side grinding apparatus for sapphire slices of the present invention;
FIG. 4 is a bottom view of the vertical double-side grinding apparatus for sapphire slices of the present invention;
FIG. 5 is a schematic view of a first polishing disk according to the present invention;
fig. 6 is a schematic view of a connection structure of a second polishing disk and a cylinder according to the present invention.
Description of reference numerals:
1 first 2 second grinding disk
3 rotating gear ring and 4 driving gear
5 supporting gear 6 internal gear
7 outer gear ring and 8 planetary wheels
9 internal gear motor 10 grinding disc support ring
11 lifting device 12 driving gear driving motor
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "upper" and "lower" generally means upper and lower as illustrated with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The invention provides a vertical double-sided grinding device for sapphire slices, as shown in fig. 1 to 6, the vertical double-sided grinding device for sapphire slices comprises: the grinding device comprises a first grinding disc 1 and a second grinding disc 2, wherein the first grinding disc 1 and the second grinding disc 2 are arranged in parallel, and the first grinding disc 1 and the second grinding disc 2 can be switched between a first state of not being vertical to the ground and a second state of being vertical to the ground. Preferably, in the first state, an included angle between the first grinding disc 1 and the second grinding disc 2 and a horizontal plane is any one of an angle of 0 ° to 45 °, further preferably, an included angle between the first grinding disc 1 and the second grinding disc 2 and a horizontal plane is 0 °, in the above, the horizontal plane is parallel to the ground.
According to the vertical double-side grinding equipment for the sapphire slices, the two grinding discs which are parallel to each other are arranged, and the first grinding disc 1 and the second grinding disc 2 can be switched between a first state which is not vertical to the ground and a second state which is vertical to the ground. When a sapphire slice to be ground is placed, the first grinding disc 1 and the second grinding disc 2 are in a first state; when grinding the sapphire section, first abrasive disc 1 and second abrasive disc 2 are in the second state, and perpendicular ground setting drives the perpendicular ground setting of sapphire section to eliminate the influence of sapphire section self gravity to the volume of getting rid of, avoid the sapphire section to scrap.
In the aforesaid, for the drive first abrasive disc 1 with second abrasive disc 2 rotates, vertical double-sided grinding equipment of sapphire section is including rotating ring gear 3, drive gear 4 and drive gear driving motor 12, the parallel ground setting of axis of rotation ring gear 3, just be equipped with the teeth of a cogwheel on the outer peripheral face of rotation ring gear 3, drive gear 4 with the meshing of the teeth of a cogwheel, drive gear 4 installs in drive gear driving motor 12's the axis of rotation, drive gear driving motor 12 is through driving drive gear 4 is with the drive rotate ring gear 3 and rotate, first abrasive disc 1 with the rotatable installation of second abrasive disc 2 rotates the interior week of ring gear 3. This arrangement enables the first abrasive disc 1 and the second abrasive disc 2 to be switched between a first state in which they are not perpendicular to the ground and a second state in which they are perpendicular to the ground.
In the foregoing, in order to cooperate rotation ring gear 3 rotates, vertical double-side lapping equipment of sapphire section includes supporting gear 5, supporting gear 5 with drive gear 4 sets up rotate ring gear 3 and be close to one side on ground, and simultaneously with rotate ring gear 3 meshing. The supporting gear 5 provides support for the rotating ring gear 3, wherein the number of the supporting gear 5 may be one or more. Preferably, the number of the support gears 5 is two.
In order to maintain the dynamic balance of the vertical double-sided grinding apparatus for sapphire slices, the rotating shafts of the first grinding disk 1 and the second grinding disk 2 are arranged along the radial direction of the rotating gear ring 3. The arrangement is such that when the first grinding disc 1 and the second grinding disc 2 rotate around the rotating shaft, the first grinding disc 1 and the second grinding disc 2 form a gyro rotor, the orientation of the rotating shaft of the first grinding disc 1 and the second grinding disc 2 in the inertial space is kept stable, namely, the rotating shaft points to a fixed direction, and simultaneously the rotating shaft resists any force changing the axial direction of the gyro rotor, and the arrangement utilizes the axial fixing property of the gyro rotor to keep the dynamic balance of the sapphire slice vertical double-sided grinding device, so that the rotating gear ring 3 can not actively rotate, and the first grinding disc 1 and the second grinding disc 2 can keep a second state during working.
In order to improve the sliced quality of polishing of sapphire, the vertical double-side lapping equipment of sapphire section includes internal gear 6, outer ring gear 7 and wandering star wheel 8, internal gear 6 with outer ring gear 7 simultaneously with 1 coaxial line setting of first abrasive disc, and install simultaneously first abrasive disc 1 is close to on the terminal surface of second abrasive disc 2, wandering star wheel 8 simultaneously with internal gear 6 with the meshing of outer ring gear 7 has seted up a plurality of section mounting holes on the wandering star wheel 8, and the sapphire section is placed in the section mounting hole. Such setting makes the sapphire section at the in-process of grinding, revolves around internal gear 6 when the rotation, and the stack of two kinds of pivoted makes the abrasive disc more even to the sliced grinding of sapphire to this improves the sliced grinding quality of sapphire.
Further, the internal gear 6 is rotatably mounted on the end surface of the first grinding disk 1 close to the second grinding disk 2, and the external gear 7 is fixed on the end surface of the first grinding disk 1 close to the second grinding disk 2. This arrangement makes it possible to control the rotation of the pinion 8 by controlling the speed of rotation of the internal gear 6.
Further, vertical two-sided grinding equipment of sapphire section includes internal gear motor 9, the gear shaft of internal gear 6 runs through first abrasive disc 1 with internal gear motor 9 is connected, so that internal gear motor 9 drives internal gear 6 rotates, thereby control the rotation of wandering star wheel 8. In order to support the first grinding disc 1, the vertical double-sided grinding equipment for sapphire slices comprises a grinding disc support ring 10, wherein the grinding disc support ring 10 is annular, a groove is formed in the end face of one end of the grinding disc support ring 10, the outer periphery of the grinding disc support ring 10 is fixedly connected with the inner periphery of the rotating gear ring 3, the axis of the grinding disc support ring 10 is perpendicular to the axis of the rotating gear ring 3, the first grinding disc 1 is arranged in the groove, and the end face, far away from the second grinding disc 2, of the first grinding disc 1 is rotatably connected with the grinding disc support ring 10. The arrangement is such that when the first grinding disc 1 is in the second state, the first grinding disc 1 is supported by the grinding disc support ring 10, and meanwhile, the internal gear motor 9 is not influenced to drive the internal gear 6 to rotate.
The internal gear motor 9 may be installed at one end of the grinding disc support ring 10 near the ground, or may be installed at the inner circumference of the rotary ring gear 3.
In order to facilitate the installation of the sapphire slices, the vertical double-side grinding equipment for the sapphire slices comprises a lifting device 11, the lifting device 11 is installed on the rotating gear ring 3, and the second grinding disc 2 is connected with the rotating gear ring 3 through the lifting device 11. The arrangement enables the lifting device 11 to drive the second grinding disc 2 to move along the axial direction of the second grinding disc 2, so that the sapphire slices can be placed or taken out conveniently.
In the above, as shown in fig. 2, the lifting device 11 includes an air cylinder, one end of the air cylinder is fixedly connected to the rotating gear ring 3, and the other end of the air cylinder is rotatably connected to the second grinding disc 2. The cylinder comprises a cylinder barrel and a piston rod moving along the axial direction of the cylinder barrel, the cylinder barrel is fixed on the inner periphery of the rotating gear ring 3, the piston rod is rotatably connected with the second grinding disc 2, the second grinding disc 2 can rotate along the axis of the second grinding disc 2, and specifically, as shown in fig. 6, the cylinder is connected with the second grinding disk 2 through a connecting block and a fixing hole, the piston rod is fixedly connected with the connecting block, the second grinding disc 2 is fixedly connected with the fixing hole, the connecting block and the fixed block are rotary bodies, the rotary section of the connecting block is C-shaped, a cylindrical cavity is formed on the connecting block, the gyration cross-section of fixed block is T shape, the one end of fixed block is formed with the cylinder, the cylinder rotationally sets up in the cylindrical cavity to make second abrasive disc 2 can use the piston rod is rotatory as the axle.
Vertical two-sided grinding equipment of sapphire section still includes abrasive disc driving motor and controller, the controller respectively with abrasive disc driving motor inner gear motor 9 drive gear driving motor 12 with the cylinder electricity is connected, abrasive disc driving motor includes two, abrasive disc driving motor installs rotate the interior week of ring gear 3, two abrasive disc driving motor respectively with first abrasive disc 1 with second abrasive disc 2 is connected, with the drive first abrasive disc 1 with second abrasive disc 2 rotates.
When the vertical double-sided grinding equipment for sapphire slices is used, a first grinding disc 1 and a second grinding disc 2 are in a first state, a lifting device 11 drives the second grinding disc 2 to be far away from the first grinding disc 1, an operator places sapphire slices to be ground in mounting holes on a planetary wheel 8, after the mounting is finished, the lifting device 11 drives the second grinding disc 2 to be close to the first grinding disc 1 until the second grinding disc 2 is contacted with the sapphire slices, a controller controls a driving gear driving motor 12 to drive a driving gear 4 to rotate, the driving gear 4 drives a rotating gear ring 3 to rotate, so that the first grinding disc 1 and the second grinding disc 2 are in a second state, the controller controls the grinding disc driving motor to rotate, the grinding disc driving motor drives the first grinding disc 1 and the second grinding disc 2 to rotate, the controller controls an inner gear motor 9 to rotate, the inner gear motor 9 drives an inner gear 6 to rotate, thereby controlling the rotational speed of the planetary wheel 8.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (7)

1. The utility model provides a vertical two-sided grinding equipment of sapphire section which characterized in that includes: the grinding device comprises a first grinding disc (1) and a second grinding disc (2), wherein the first grinding disc (1) and the second grinding disc (2) are arranged in parallel, and the first grinding disc (1) and the second grinding disc (2) can be switched between a first state of not being vertical to the ground and a second state of being vertical to the ground;
the vertical double-side grinding equipment for the sapphire slices comprises a rotating gear ring (3) and a driving gear (4), wherein the axis of the rotating gear ring (3) is parallel to the ground, gear teeth are arranged on the outer peripheral surface of the rotating gear ring, the driving gear (4) is meshed with the gear teeth, and the first grinding disc (1) and the second grinding disc (2) are rotatably arranged on the inner periphery of the rotating gear ring (3);
the rotating shafts of the first grinding disc (1) and the second grinding disc (2) are arranged along the radial direction of the rotating gear ring (3);
the vertical double-sided grinding equipment for the sapphire slices comprises a grinding disc support ring (10), the periphery of the grinding disc support ring (10) is fixedly connected with the inner periphery of a rotating gear ring (3), the axis of the grinding disc support ring (10) is perpendicular to the axis of the rotating gear ring (3), and the end face, away from a second grinding disc (2), of a first grinding disc (1) is rotatably connected with the grinding disc support ring (10).
2. The vertical double-side grinding apparatus for sapphire slices according to claim 1, comprising a support gear (5), wherein the support gear (5) and the drive gear (4) are disposed on the side of the rotating ring gear (3) close to the ground and simultaneously mesh with the rotating ring gear (3).
3. The vertical double-sided grinding device for sapphire slices according to claim 1, comprising an inner gear (6), an outer gear ring (7) and a planetary gear (8), wherein the inner gear (6) and the outer gear ring (7) are coaxially arranged with the first grinding disc (1) and are mounted on the end face, close to the second grinding disc (2), of the first grinding disc (1), and the planetary gear (8) is simultaneously meshed with the inner gear (6) and the outer gear ring (7).
4. The vertical double-sided lapping apparatus for sapphire slices according to claim 3, characterized in that the internal gear (6) is rotatably mounted on the end face of the first lapping disc (1) close to the second lapping disc (2), and the external gear ring (7) is fixed on the end face of the first lapping disc (1) close to the second lapping disc (2).
5. The vertical double-sided lapping device for sapphire slices according to claim 3, characterized in that it comprises an internal gear motor (9), the gear shaft of the internal gear (6) passing through the first lapping disk (1) and being connected with the internal gear motor (9).
6. The vertical double-sided lapping device for sapphire slices according to claim 1, characterized in that it comprises a lifting device (11), the second lapping disc (2) being connected with the rotating ring gear (3) through the lifting device (11).
7. The vertical double-sided lapping device of claim 6, characterized in that the lifting device (11) comprises a cylinder, one end of which is fixedly connected with the rotating gear ring (3) and the other end is rotatably connected with the second lapping disc (2).
CN201910744794.5A 2019-08-09 2019-08-09 Vertical double-sided grinding equipment for sapphire slices Active CN110340787B (en)

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CN110340787B true CN110340787B (en) 2021-08-10

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1395912A (en) * 1971-03-31 1975-05-29 Glacier Metal Co Ltd Workpiece table with working surface
CN101058161A (en) * 2007-05-18 2007-10-24 宁波甬微集团有限公司 Double face abrading machine
CN103213061A (en) * 2012-01-18 2013-07-24 张卫兴 Processing technic of sapphire substrate slice special for patterned substrate
CN203210171U (en) * 2013-04-16 2013-09-25 河南富耐克超硬材料股份有限公司 Double-surface lapping machine
CN104669106A (en) * 2015-02-10 2015-06-03 盐城工学院 Double-surface grinding and double-surface polishing high-efficiency ultraprecise processing method for large-sized A-directional sapphire mobile phone screen
CN205968404U (en) * 2016-08-31 2017-02-22 山东济宁特力机床有限公司 Numerical control upset machine
CN109249055A (en) * 2018-10-22 2019-01-22 冯俊辉 A kind of fixture for multi-diameter shaft side-wall hole

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4256977B2 (en) * 1999-04-13 2009-04-22 不二越機械工業株式会社 Double-side polishing system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1395912A (en) * 1971-03-31 1975-05-29 Glacier Metal Co Ltd Workpiece table with working surface
CN101058161A (en) * 2007-05-18 2007-10-24 宁波甬微集团有限公司 Double face abrading machine
CN103213061A (en) * 2012-01-18 2013-07-24 张卫兴 Processing technic of sapphire substrate slice special for patterned substrate
CN203210171U (en) * 2013-04-16 2013-09-25 河南富耐克超硬材料股份有限公司 Double-surface lapping machine
CN104669106A (en) * 2015-02-10 2015-06-03 盐城工学院 Double-surface grinding and double-surface polishing high-efficiency ultraprecise processing method for large-sized A-directional sapphire mobile phone screen
CN205968404U (en) * 2016-08-31 2017-02-22 山东济宁特力机床有限公司 Numerical control upset machine
CN109249055A (en) * 2018-10-22 2019-01-22 冯俊辉 A kind of fixture for multi-diameter shaft side-wall hole

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Effective date of registration: 20240131

Address after: 324200 No.7 Longjiang Road, Jinchuan street, Changshan County, Quzhou City, Zhejiang Province

Patentee after: Zhejiang fuleide quartz Technology Co.,Ltd.

Guo jiahuodiqu after: Zhong Guo

Address before: 324000 North China Road No. 78, Quzhou, Quzhou, Zhejiang

Patentee before: QUZHOU University

Guo jiahuodiqu before: Zhong Guo