CN107225440B - A kind of polishing method on metal inclined-plane - Google Patents
A kind of polishing method on metal inclined-plane Download PDFInfo
- Publication number
- CN107225440B CN107225440B CN201710622771.8A CN201710622771A CN107225440B CN 107225440 B CN107225440 B CN 107225440B CN 201710622771 A CN201710622771 A CN 201710622771A CN 107225440 B CN107225440 B CN 107225440B
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- Prior art keywords
- plane
- polishing
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- accurate
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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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
- B24B47/04—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by mechanical gearing only
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
-
- 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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/08—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving liquid or pneumatic means
-
- 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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/16—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load
- B24B49/165—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load for grinding tyres
-
- 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
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/04—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of metal, e.g. skate blades
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention relates to polishing technical field, a kind of specifically polishing method on metal inclined-plane, steps are as follows for the polishing method: carrying out CNC processing to the surface at blank edge, obtains the intilted inclined-plane of vertical plane and vertical plane top；Blank surface is cleaned and is dried；Treatment of Metal Surface is carried out to vertical plane and inclined-plane；Pretreatment before carrying out polishing inclined plane, to eliminate the Treatment of Metal Surface trace on inclined-plane；Inclined-plane is polished；Blank surface is cleaned and is dried.Beneficial effects of the present invention: just for product polishing inclined plane, polishing area is small, is polished using automation, high-efficient, stay in grade；Unnecessary processing procedure is reduced, the yield of product, maximizing the benefits are improved；The visual effect of polishing inclined plane is good, precision is high, tolerance is easily managed；Crest line will not be destroyed with vertical plane in technique process.
Description
[technical field]
The present invention relates to polishing technical field, a kind of specifically polishing method on metal inclined-plane.
[background technique]
It is the process flow of prior art polishing referring to Fig. 1 and Fig. 2, major defect is as follows:
1) product whole face need to be polished, polishing area is big, time-consuming, at high cost, yield is low and quality is unstable；
2) prior art is polished manually using cotton piece buff, polishing low precision, the margin of tolerance poor to the visual effect of cambered surface polishing
Greatly, and the size of top end surface is difficult to manage；
3) there are also blasting craft after painting, protective paint is easy to fall off in sandblasting, and is damaged to polished inclined-plane and tiltedly
Crest line between face and vertical plane, yield are low.
For third disadvantage, in prior art, generallys use fixture and covered, but had between fixture and product
Gap, and can not be completely secured and be overlapped with crest line, so yield is not still high, quality is still not sufficiently stable.
Therefore, it is necessary to design a kind of polishing method on novel metal inclined-plane.
[summary of the invention]
It is an object of the invention to solve the deficiencies in the prior art, a kind of polishing method on metal inclined-plane is provided, reduces system
Journey process is polished just for product inclined-plane, will not destroy the crest line between vertical plane and inclined-plane, improves the yield of product, and
Make maximizing the benefits.
To achieve the goals above, a kind of polishing method on metal inclined-plane is designed, it is characterised in that the polishing method
Steps are as follows:
A. CNC processing is carried out to the surface at blank edge, obtains the intilted inclined-plane of a vertical plane and vertical plane top；
B. blank surface is cleaned and is dried；
C. Treatment of Metal Surface is carried out to vertical plane and inclined-plane；
D. the pretreatment before polishing inclined plane is carried out, to eliminate the Treatment of Metal Surface trace on inclined-plane；
E. inclined-plane is polished；
F. blank surface is cleaned and is dried.
In one preferred embodiment, the Treatment of Metal Surface of the step c includes blasting treatment, at anodization
Reason, polishing treatment and spray treatment.
In one preferred embodiment, the step d includes:
D1. pass through CNC finish-milling inclined-plane；
D2. blank surface is cleaned and is dried.
In one preferred embodiment, the step d is to carry out rough polishing to inclined-plane, and the rough polishing is specific
It is as follows: blank to be clamped by the fixture of automatic polishing machine, fixture bottom end is equipped with R axis rotary drive mechanism, R axis rotary drive mechanism
It is connected with third axial actuating mechanism, the rubbing head of automatic polishing machine changes the outfit as sand paper, the sand paper and accurate relocation mechanism
It is connected, accurate relocation mechanism is connected with the second axial actuating mechanism, the second axial actuating mechanism and first axis driving mechanism phase
Even, the accurate relocation mechanism includes that the accurate rocker piece matched is connected with accurate floating guide rail and with accurate rocker piece
Thin cylinder, when rough polishing, the third axial actuating mechanism can drive R axis rotary drive mechanism, fixture and blank in Y
Axis moves up, and the first axis driving mechanism and the second axially driving energy drive accurate relocation mechanism and sand paper in X-axis
It is moved up to Z axis, so that sand paper is able to maintain the inclination angle being adapted with blank inclined-plane in rough polishing, works as rough polishing
To blank corner when, R axis rotary drive mechanism can drive fixture and blank to rotate, and just treat so that sand paper is able to maintain
Burnishing surface, and rough polishing is carried out to fillet with tangent line.
In one preferred embodiment, the step e is specific as follows: clamping base by the fixture of automatic polishing machine
Material, fixture bottom end are equipped with R axis rotary drive mechanism, and R axis rotary drive mechanism is connected with third axial actuating mechanism, automatic polishing
The rubbing head of machine is connected with accurate relocation mechanism, and accurate relocation mechanism is connected with the second axial actuating mechanism, and second is axially driving
Mechanism is connected with first axis driving mechanism, and the accurate relocation mechanism includes the accurate rocker piece matched and accurate floating
Guide rail and the thin cylinder being connected with accurate rocker piece, when polishing, the third axial actuating mechanism can drive R axis to rotate
Driving mechanism, fixture and blank are moved up in Y-axis, and the first axis driving mechanism and the second axially driving energy drive essence
Close relocation mechanism and rubbing head are moved up in X axis and Z axis, so that rubbing head is able to maintain and blank inclined-plane in polishing
Adaptable inclination angle, when being polished to the corner of blank, R axis rotary drive mechanism can drive fixture and blank to rotate, from
And making rubbing head be able to maintain the polished face of face, and polish with tangent line to fillet, polishing while, passes through thin cylinder
Export the size that different air pressures changes rubbing head pressure.
In one preferred embodiment, it is equipped with stabilizer blade or movable castor in the automatic polishing motor spindle, it can
Automatic polishing machine is moved to production line to polish.
In one preferred embodiment, the thin cylinder uses 2 grades of pressure regulation, and the gas circuit of thin cylinder is equipped with
Air composition element to first order pressure regulation and the precise pressure-reducing valve to second level pressure regulation, can be by air composite unit
The adjusting of part and precise pressure-reducing valve realizes the adjusting of thin cylinder pressure to realize the different pressures of rubbing head.
Beneficial effects of the present invention:
1) just for product polishing inclined plane, polishing area is small, is polished using automation, high-efficient, stay in grade；
2) unnecessary processing procedure is reduced, the yield of product, maximizing the benefits are improved；
3) visual effect of polishing inclined plane is good, precision is high, tolerance is easily managed；
4) crest line and vertical plane that vertical plane intersects with inclined-plane in technique process will not be destroyed, and blank Top section
Size adjustable.
[Detailed description of the invention]
Fig. 1 is the flow diagram of the prior art；
Fig. 2 is the flow diagram of the prior art；
Fig. 3 is the flow diagram of present invention process in an embodiment；
Fig. 4 is the flow diagram of present invention process in an embodiment；
Fig. 5 is the schematic diagram that the present invention polishes used automatic polishing machine in an embodiment；
Fig. 6 is that the present invention polishes accurate relocation mechanism and rubbing head part in used automatic polishing machine in an embodiment
Partial enlarged view；
Fig. 7 is the top view of blank in an embodiment；
Fig. 8 is the cross-sectional view of blank in an embodiment；
In figure: 1, pedestal；2, the first upright frame；3, R axis rotary drive mechanism；4, rubbing head；5, third linear sliding rail；
6, the first linear slide rail；7, the first sliding block；8, first servo motor；9, the second linear slide rail；10, the second sliding block, 11, third cunning
Block；12, accurate floating guide rail；13, thin cylinder；14, accurate rocker piece；15, the second upright frame；16, fixture；17, it blocks
Frame；18,20. inclined-plane of end face, 21. crest line, 22. vertical plane at 19. top of third servo motor.
[specific embodiment]
The present invention will be further explained below with reference to the attached drawings, and the principle of this technique is very for the people of this profession
Clearly.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Referring to Fig. 3 and Fig. 4, steps are as follows for the polishing method:
A. referring to figs. 7 and 8, CNC processing is carried out to the surface at blank edge, it is inside obtains vertical plane 22,22 top of vertical plane
The end face 19 at inclined inclined-plane 20 and top；
B. blank surface is cleaned and is dried；
C. blasting treatment is carried out to vertical plane 22 and inclined-plane 20；
D. pass through CNC finish-milling inclined-plane 20 and blank surface is cleaned and dried, to eliminate the metal watch on inclined-plane 20
Surface treatment trace；
E. inclined-plane 20 is polished；
F. blank surface is cleaned and is dried.
The present embodiment is polished using automatic polishing machine, and referring to Fig. 5, the automatic polishing machine includes pedestal 1 and set
The first upright frame 2 and four axes motion mechanism on pedestal 1 are set, the four axes motion mechanism is by first axis driving machine
Structure, the second axial actuating mechanism, third axial actuating mechanism and R axis rotary drive mechanism 3 form, in first upright frame
2 are equipped with first axis driving mechanism, and first axis driving mechanism is connected with the second axial actuating mechanism, the second axially driving machine
Structure is connected with accurate relocation mechanism, and third axial actuating mechanism, third axial actuating mechanism and rotation are additionally provided on the pedestal 1
Turn driving mechanism to be connected, the first axis driving mechanism is X axis driving mechanism, and second axial actuating mechanism is
Z axis is to driving mechanism, and the third axial actuating mechanism is Y-axis driving mechanism, in the upper end of R axis rotary drive mechanism 3
It is additionally provided with the fixture 16 for clamping workpiece, R axis rotary drive mechanism 3 drives fixture 16 rotations, on the periphery of the fixture 16
Equipped with blocking frame 17, this blocks frame material scrap splashes when can prevent sanding and polishing, and prevent scrap to equipment
Generate the adverse effect of obstruction.
In a preferred embodiment, the first axis driving mechanism includes connecting with the first upright frame 2
The first linear slide rail 6, the first linear slide rail 6 be equipped with the first sliding block 7, the first sliding block 7 be equipped with the first screw hole, the first screw hole
Cooperate with the first wire rod thread, one end of the first screw rod connects with the first servo motor 8 for being fixed on 6 side of the first linear slide rail
It connects；Second axial actuating mechanism includes the second linear slide rail 9 connecting with the first sliding block 7, is set on the second linear slide rail 9
There is the second sliding block 10, the second sliding block 10 is equipped with the second screw hole, and the second screw hole and the second wire rod thread cooperate, and the one of the second screw rod
Hold and be fixed on the second servo motor connection of 9 lower part of the second linear slide rail；Between the first sliding block 7 and the second linear slide rail 9
It is also connected with the second upright frame 15；The third axial actuating mechanism includes the third linear sliding rail 5 that pedestal is equipped with, the
Three linear slide rails 5 are matched with third sliding block 11, and third sliding block 11 is equipped with third screw hole, third screw hole and third wire rod thread
Cooperation, one end of third screw rod is connect with the third servo motor 18 for being fixed on 5 side of third linear sliding rail.
It is the partial enlarged view of 4 part of accurate relocation mechanism and rubbing head in automatic polishing machine referring to Fig. 6, it is described
Accurate relocation mechanism is made of accurate floating guide rail 12, accurate rocker piece 14 and 13 three parts of thin cylinder, accurate rocker piece
14 cooperate with accurate floating guide rail 12, and thin cylinder 13 is connected with accurate rocker piece 14 and accurate rocker piece 14 can be driven along precision
Floating guide rail 12 floats, and accurate floating slider 14 is equipped with rubbing head 4, and the rubbing head 4 can change the outfit as other component, such as sand
Paper.
When polishing, the third axial actuating mechanism can drive R axis rotary drive mechanism, fixture and blank in Y-axis
Upper movement, the first axis driving mechanism and the second axially driving energy drive accurate relocation mechanism and rubbing head 4 in X axis
It is moved up with Z axis, so that rubbing head 4 is able to maintain the inclination angle being adapted with blank inclined-plane 20 in polishing, works as polishing
To blank corner when, R axis rotary drive mechanism can drive fixture and blank to rotate, so that rubbing head 4 is able to maintain just
Burnishing surface is treated, and fillet is polished with tangent line, different air pressures is exported by thin cylinder while polishing and is changed
The size of 4 pressure of rubbing head.Polishing will not be damaged to end face 19 at the top of blank, inclined-plane 20,20 lower end of inclined-plane vertical plane 22 with
And the crest line 21 on inclined-plane and vertical plane intersection, and polished using gradient fillet, effect is good, yield is high, and rubbing head 4 being capable of front and back shifting
Dynamic, pressure size is set by the air pressure of thin cylinder, and polishing effect when guaranteeing product slight deformation is equally excellent, rubbing head
4 are floated on certain pressure and polish on burnishing surface.
The comparison of table 1. and the prior art
Referring to table 1, metal inclined-plane is polished using present invention process, the polishing of 25K part product, pole can be completed daily
The earth saves human resources and equipment cost, and its product yield also obtains while working efficiency significantly improves
Across the growth of property.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of polishing method on metal inclined-plane, it is characterised in that steps are as follows for the polishing method:
A. CNC processing is carried out to the surface at blank edge, obtains the intilted inclined-plane of a vertical plane and vertical plane top；
B. blank surface is cleaned and is dried；
C. Treatment of Metal Surface is carried out to vertical plane and inclined-plane；
D. the pretreatment before polishing inclined plane is carried out, to eliminate the Treatment of Metal Surface trace on inclined-plane；
E. inclined-plane is polished；
F. blank surface is cleaned and is dried；
Wherein, the step d is to carry out rough polishing to inclined-plane, and the rough polishing is specific as follows: passing through automatic polishing machine
Fixture clamps blank, and fixture bottom end is equipped with R axis rotary drive mechanism, R axis rotary drive mechanism and third axial actuating mechanism phase
Even, the rubbing head of automatic polishing machine changes the outfit as sand paper, and the sand paper is connected with precision relocation mechanism, accurate relocation mechanism and the
Two axial actuating mechanisms are connected, and the second axial actuating mechanism is connected with first axis driving mechanism, the accurate relocation mechanism
Including the accurate rocker piece that matches and accurate floating guide rail and the thin cylinder being connected with accurate rocker piece, when rough polishing,
The third axial actuating mechanism can drive R axis rotary drive mechanism, fixture and blank to move up in Y-axis, and described
One axial actuating mechanism and the second axially driving energy drive accurate relocation mechanism and sand paper to move up in X axis and Z axis, thus
So that sand paper is able to maintain the inclination angle being adapted with blank inclined-plane, when the corner of rough polishing to blank, R axis in rough polishing
Rotary drive mechanism can drive fixture and blank to rotate, so that sand paper is able to maintain the polished face of face, and with tangent line to circle
Angle carries out rough polishing.
2. a kind of polishing method on metal inclined-plane as described in claim 1, it is characterised in that at the metal surface of the step c
Reason includes blasting treatment, anodization, polishing treatment and spray treatment.
3. a kind of polishing method on metal inclined-plane as described in claim 1, it is characterised in that the step d includes:
D1. pass through CNC finish-milling inclined-plane；
D2. blank surface is cleaned and is dried.
4. a kind of polishing method on metal inclined-plane as described in claim 1, it is characterised in that the step e is specific as follows:
Blank is clamped by the fixture of automatic polishing machine, and fixture bottom end is equipped with R axis rotary drive mechanism, R axis rotary drive mechanism and the
Three axial actuating mechanisms are connected, and the rubbing head of automatic polishing machine is connected with accurate relocation mechanism, accurate relocation mechanism and the second axis
It is connected to driving mechanism, the second axial actuating mechanism is connected with first axis driving mechanism, and the accurate relocation mechanism includes
The accurate rocker piece matched and accurate floating guide rail and the thin cylinder being connected with accurate rocker piece, it is described when polishing
Third axial actuating mechanism can drive R axis rotary drive mechanism, fixture and blank to move up in Y-axis, the first axis
Driving mechanism and the second axially driving energy drive accurate relocation mechanism and rubbing head to move up in X axis and Z axis, so that
Rubbing head is able to maintain the inclination angle being adapted with blank inclined-plane in polishing, and when being polished to the corner of blank, the rotation of R axis is driven
Motivation structure can drive fixture and blank to rotate so that rubbing head is able to maintain the polished face of face, and with tangent line to fillet into
Row polishing, exports the size that different air pressures changes rubbing head pressure by thin cylinder while polishing.
5. a kind of polishing method on metal inclined-plane as described in claim 1 or 4, it is characterised in that in the automatic polishing
Motor spindle is equipped with stabilizer blade or movable castor, automatic polishing machine can be moved to production line and polished.
6. a kind of polishing method on metal inclined-plane as described in claim 1 or 4, it is characterised in that the thin cylinder is adopted
It is equipped with the gas circuit of 2 grades of pressure regulation, thin cylinder to the air composition element of first order pressure regulation and to second level pressure regulation
Precise pressure-reducing valve, can be realized by the adjusting to air composition element and precise pressure-reducing valve the adjusting of thin cylinder pressure to
Realize the different pressures of rubbing head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710622771.8A CN107225440B (en) | 2017-07-27 | 2017-07-27 | A kind of polishing method on metal inclined-plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710622771.8A CN107225440B (en) | 2017-07-27 | 2017-07-27 | A kind of polishing method on metal inclined-plane |
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| Publication Number | Publication Date |
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| CN107225440A CN107225440A (en) | 2017-10-03 |
| CN107225440B true CN107225440B (en) | 2019-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710622771.8A Active CN107225440B (en) | 2017-07-27 | 2017-07-27 | A kind of polishing method on metal inclined-plane |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107838629A (en) * | 2017-11-28 | 2018-03-27 | 苏州卓诚钛设备有限公司 | A kind of surface of metal product processing unit |
| CN109986077B (en) | 2018-01-02 | 2022-05-06 | 通用电气公司 | Additive manufacturing system and additive manufacturing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103325A (en) * | 1993-11-29 | 1995-06-07 | 李荣堂 | Method for mfg. golf club head |
| EP1116531A2 (en) * | 2000-01-17 | 2001-07-18 | bulthaup GmbH & Co. Küchensysteme | Method of making workplates with bevelled edges |
| CN106090471A (en) * | 2015-04-28 | 2016-11-09 | 尤尼罗库株式会社 | The locating snap ring manufacture method of pipe fitting device and locating snap ring thereof |
| CN106736304A (en) * | 2017-01-25 | 2017-05-31 | 广东欧珀移动通信有限公司 | Metal shell processing technology, metal shell and electronic equipment |
-
2017
- 2017-07-27 CN CN201710622771.8A patent/CN107225440B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103325A (en) * | 1993-11-29 | 1995-06-07 | 李荣堂 | Method for mfg. golf club head |
| EP1116531A2 (en) * | 2000-01-17 | 2001-07-18 | bulthaup GmbH & Co. Küchensysteme | Method of making workplates with bevelled edges |
| CN106090471A (en) * | 2015-04-28 | 2016-11-09 | 尤尼罗库株式会社 | The locating snap ring manufacture method of pipe fitting device and locating snap ring thereof |
| CN106736304A (en) * | 2017-01-25 | 2017-05-31 | 广东欧珀移动通信有限公司 | Metal shell processing technology, metal shell and electronic equipment |
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| CN107225440A (en) | 2017-10-03 |
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