CN109420810A - Hard metal electrochemical deburring method and apparatus - Google Patents
Hard metal electrochemical deburring method and apparatus Download PDFInfo
- Publication number
- CN109420810A CN109420810A CN201710776676.3A CN201710776676A CN109420810A CN 109420810 A CN109420810 A CN 109420810A CN 201710776676 A CN201710776676 A CN 201710776676A CN 109420810 A CN109420810 A CN 109420810A
- Authority
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- China
- Prior art keywords
- workpiece
- hard metal
- burr
- cathode taps
- treatment fluid
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/02—Trimming or deburring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
- B23H11/003—Mounting of workpieces, e.g. working-tables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
Abstract
A kind of hard metal electrochemical deburring method, including cathode taps and hard metal workpiece, the cathode of the cathode taps connection DC power supply, the anode of the workpiece connection DC power supply；Analyze workpiece, determine the burr areas of such workpiece, the workpiece is placed in below the cathode taps, cathode taps 0.3-1mm described in the distance of the workpiece, pass through insulator separation between the non-burr areas and the cathode taps of the workpiece, treatment fluid, the burr generation chemical reaction of the treatment fluid and the workpiece are sprayed to the burr areas of the workpiece, and the substance after reaction is taken away to remove flash removed by the flowing of the treatment fluid.The application can the not damaged burr removed on hard metal workpiece.
Description
Technical field
This application involves the field of metal processing, espespecially a kind of hard metal electrochemical deburring method and apparatus.
Background technique
Currently, the mobile terminal cases such as mobile phone, generally using light metal alloys such as magnesium or aluminium as shell, this waits magnesium or aluminium
Alloy rigidity is lower, in process, can generally be finished using forging or die casting, then by CNC cutting.With mobile phone
The development in market, the requirement to the texture, hardness of shell are all increasing.Currently, starting in the market using superhard materials such as stainless steels
Material is used as handset shell, but the difficulty of processing of the superhard materials such as stainless steel is very big, needs more cutters, longer time
It goes to be processed.
For the hard metal workpiece that the techniques such as use CNC process, understand in partial region generation burr, and conventional deburring
Generally by the way of manually cutting off, but this kind of mode easily causes the damage of workpiece appearance for hard metal workpiece
Wound can generate new burr structure, be unable to reach preferable removal effect.
Summary of the invention
In consideration of it, it is necessary to provide a kind of outside removal effect and not hard metal electrochemical deburring method of disfiguring workpiece and
Equipment.
In order to solve the above technical problems, this application provides a kind of hard metal electrochemical deburring method, including cathode taps
And hard metal workpiece, the cathode of the cathode taps connection DC power supply, the anode of the workpiece connection DC power supply；Analyze work
Part determines the burr areas of such workpiece, and the workpiece is placed in below the cathode taps, cathode described in the distance of the workpiece
Head 0.3-1mm, passes through insulator separation, the burr of Xiang Suoshu workpiece between the non-burr areas and the cathode taps of the workpiece
Treatment fluid, the burr generation chemical reaction of the treatment fluid and the workpiece are sprayed in region, and pass through the flowing of the treatment fluid
Substance after taking away reaction is to remove flash removed.
Preferably, the hard metal workpiece is stainless steel.
Preferably, the treatment fluid includes: the sodium nitrate of 3-7%, the sodium chloride of 2.0-5%, 1-4% again in mass ratio
Disodium hydrogen phosphate, the water greater than 80%.
Preferably, the treatment fluid includes: the sodium nitrate of 4-6%, the sodium chloride of 2.5-3.5%, 1.5- again in mass ratio
2.5% disodium hydrogen phosphate, the water greater than 80%.
Preferably, the treatment fluid include: again in mass ratio 5% sodium nitrate, 3% sodium chloride, 2% phosphoric acid hydrogen two
Sodium, the water greater than 80%.
Preferably, the burr of the treatment fluid and the workpiece generates following chemical reaction:
Mn-3e=Mn3+；
Mn-2e=Mn2+；
Cr-2e=Cr2+；
Si+2H2O-4e=SiO2(s)↓+4H+；
Fe2++ e=Fe3+；
Cr-3e=Cr3+；
Fe-2e=Fe2+；
Cr2+- e=Cr3+；
Ni-2e=Ni2+；
Fe-3e=Fe3+；
4OH-- 4e=2H2O+O2(g)↑；
Mn2++2H2O-2e=MnO2(s)↓+4H+；
2Cl-- 2e=Cl2(g)↑；
Preferably, the flow velocity degree of the treatment fluid is 1-3m/s.
Preferably, the insulating layer is coated on the side surface relative to the workpiece of the cathode taps, the insulation
Layer is glass fibre.
Preferably, the insulating layer is coated on the workpiece, and the insulating layer is glass fibre.
Preferably, the DC power supply is the high frequency switch power that frequency is 30KHz-100KHz, operating voltage 2-5V.
Unresolved above-mentioned technical problem, present invention also provides a kind of hard metal Electrochemic equipment for removing burr, including board,
Work holder on the board, the cathode taps above the work holder, insulating layer and spraying machine
Structure, workpiece, the cathode of the cathode taps connection DC power supply are clamped on the work holder, and the workpiece connects direct current
The anode of power supply；Cathode taps 0.3-1mm described in the distance of the workpiece, the insulating layer are located at the workpiece and the cathode taps
Between and the impulse- free robustness region of the workpiece is isolated with the cathode taps, the spraying mechanism discharges treatment fluid to the work
The burr areas of part, the burr of the workpiece and the treatment fluid, which generate, to be chemically reacted and generates corrosive deposit, the erosion
Matter is taken away by the treatment fluid.
Preferably, the board includes pedestal, upwardly extends from the pedestal bracket to be formed and be set up in the bracket
On crossbeam, the cathode taps be set to the crossbeam on, the work holder be set to the pedestal on and be located at the cross
Below beam.
Preferably, the work holder includes mobile mechanism and the fixture in the mobile mechanism, the shifting
Motivation structure can move in one direction the fixture, so that the fixture is in state to be mounted or in position after clamping
State to be processed below the cathode taps.
Preferably, the hard metal workpiece is stainless steel.
Preferably, the insulating layer is coated on the side surface relative to the workpiece of the cathode taps, the insulation
Layer is glass fibre.
Preferably, the insulating layer is coated on the workpiece, and the insulating layer is glass fibre.
Preferably, the DC power supply is the high frequency switch power that frequency is 30KHz-100KHz, operating voltage 2-5V.
The application is removed in hard metal by the way of electrochemical corrosion compared to by the way of artificial removal's burr
Burr, will not disfiguring workpiece surface and cause bad order, while asking for secondary burr will not be easy to produce because of manual operation
Topic.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the schematic diagram of the application hard metal electrochemical deburring method；
Fig. 2 is the perspective view of the application hard metal Electrochemic equipment for removing burr；
Fig. 3 is the front view of the application hard metal Electrochemic equipment for removing burr.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.
Refering to Figure 1, the application hard metal, by taking stainless steel as an example, stainless steel work-piece 40 is by the processing of the techniques such as CNC
Afterwards, burr 41 can be left in surface portion region, the length of the burr 41 is generally within 1mm.
The application hard metal electrochemical deburring method includes:
S1, analysis workpiece 40, determine that the region of burr occurs in this workpiece.
The burr areas that S2, foundation determine, is dielectrically separated from workpiece impulse- free robustness region；
This step refers to is dielectrically separated from the impulse- free robustness region of the workpiece 40 and a cathode taps 50 between each other, insulation every
From mode include in the cathode taps 50 towards covering an insulating layer 60,60 face of insulating layer on the surface of the workpiece 40
Cut is equipped with to the burr areas of the workpiece, makes that insulating layer 60 is not present between the burr areas and the cathode taps 50；
Or insulating layer 60 is arranged on the workpiece 40, the insulating layer 60 covers the impulse- free robustness region of the workpiece 40, and described
Burr areas is exposed outside.The insulating layer 60 is glass fibre.
S3, clamping workpiece 40, make the burr areas of workpiece 40 towards cathode taps 50, and adjust the cathode taps 50 with it is described
The distance between 40 surface of workpiece；
In this step, the distance between 40 surface of the cathode taps 50 and the workpiece is adjusted between 0.3-1mm, specifically
Distance can according to the length of Work-piece burr determine.
S4, the workpiece 40 connects to DC power anode, the cathode taps 50 connect DC power cathode, and to described
Spray treatment fluid in the burr areas of workpiece 40；
The cathode taps 50 are made of red metal material；The DC power supply is that the high frequency that frequency is 30KHz-100KHz is opened
Powered-down source, operating voltage 2-5V.
Several spray holes that the treatment fluid can be directly arranged from the cathode taps 50 flow to the burr of the workpiece 40
Region；The surface of certain workpiece 40 is there is also the processing hole that processing is formed, and in the specific implementation, the treatment fluid can also be from institute
It states and the burr areas is flowed upwardly toward by the processing hole below workpiece.
The flow velocity of the treatment fluid is 1-3m/s.
The treatment fluid is heavy as follows in mass ratio: the sodium nitrate of 3-7%, the sodium chloride of 2.0-5%, 1-4% phosphoric acid hydrogen
Disodium, the water greater than 80%；
Preferably, the treatment fluid is heavy as follows in mass ratio: the sodium nitrate of 4-6%, the sodium chloride of 2.5-3.5%, 1.5-
2.5% disodium hydrogen phosphate, the water greater than 80%；
Preferably, the treatment fluid is heavy as follows in mass ratio: 5% sodium nitrate, 3% sodium chloride, 2% phosphoric acid hydrogen two
Sodium, the water greater than 80%.
In this step, the burr of workpiece 40 and the treatment fluid generate following chemical reaction in stainless steel:
Mn-3e=Mn3+
Mn-2e=Mn2+
Cr-2e=Cr2+
Si+2H2O-4e=SiO2(s)↓+4H+
Fe2++ e=Fe3+
Cr-3e=Cr3+
Fe-2e=Fe2+
Cr2+- e=Cr3+
Ni-2e=Ni2+
Fe-3e=Fe3+
4OH-- 4e=2H2O+O2(g)↑
Mn2++2H2O-2e=MnO2(s)↓+4H+
2Cl-- 2e=Cl2(g)↑
The burr of the treatment fluid and the workpiece 40 generates chemical reaction and generates corrosive deposit, then passes through the treatment fluid
Flow velocity the corrosive deposit is taken away to reach the technical effect of flash removed.
The application is removed in hard metal by the way of electrochemical corrosion compared to by the way of artificial removal's burr
Burr, will not disfiguring workpiece surface and cause bad order, while asking for secondary burr will not be easy to produce because of manual operation
Topic.
It please refers to shown in Fig. 2, Fig. 3, is the diagram of the application hard metal Electrochemic equipment for removing burr.The application hard metal electricity
Chemical deburring equipment includes board 10, the work holder 20 on the board 10, is located at piece-holder dress
Set cathode taps 30, insulating layer 60 and the spraying mechanism (not shown) on 20.
The board 10 includes pedestal 11, upwardly extends the bracket 12 to be formed from the pedestal 11 and be set up in the branch
Crossbeam 13 on frame 12.The cathode taps 30 are set on the crossbeam 13, and the work holder 20 is set to the pedestal 11
It goes up and is located at 13 lower section of crossbeam.
The work holder 20 includes mobile mechanism 21 and the fixture 22 in the mobile mechanism 21, the shifting
Motivation structure 21 can move in one direction the fixture 22, so that the fixture 22 is in state to be mounted or in dress
It is located at the state to be processed of 50 lower section of cathode taps after folder.The mobile mechanism 21 can be moved by cooperations such as cylinder, motors
Dynamic component realizes locomotive function.
For the fixture 22 for clamping the workpiece 40, the insulating layer 60 is covered in the workpiece 40 or the cathode taps
On 50, makes to realize between the non-burr areas of the workpiece 40 and the cathode taps 50 and be isolated.
The operation principles of the application hard metal Electrochemic equipment for removing burr are as follows:
Firstly, workpiece 40 is clamped on the fixture 22, starts the mobile mechanism 21 and be moved to the fixture 22
50 lower section of cathode taps on the crossbeam 13；The upper and lower position for adjusting the cathode taps 50 or the fixture 22, makes the cathode
Within the scope of 40 surface to 0.3-1mm of workpiece described in first 50 surface distance, meanwhile, between the cathode taps 50 and the workpiece 40
It is clamped with the insulating layer 60, the insulating layer 60 covers the impulse- free robustness region of the workpiece 40, the burr area of the workpiece 40
Domain is directly facing the cathode taps 50；The cathode taps 50 connect the cathode of the DC power supply, and the workpiece 40 is connected described
The anode of DC power supply, the spraying mechanism are flowed by the processing hole in the spray hole or workpiece 40 in the cathode taps 50
To the burr areas of the workpiece 40, in one embodiment, the treatment fluid directly can also spray into the burr area from side
Domain, the flow velocity of the treatment fluid are 1-3m/s, and the treatment fluid and 40 surface of workpiece generate the change as described in embodiment one
Reaction is learned, and is taken away reactant by the treatment fluid；After the reaction was completed, it shuts down, starting the mobile mechanism 21 will be described
Workpiece 40 is removed from below the cathode taps 50.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method of element, commodity or equipment.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (17)
1. a kind of hard metal electrochemical deburring method, which is characterized in that including cathode taps and hard metal workpiece, the cathode taps
Connect the cathode of DC power supply, the anode of the workpiece connection DC power supply；Workpiece is analyzed, determines the burr area of such workpiece
The workpiece is placed in below the cathode taps by domain, cathode taps 0.3-1mm described in the distance of the workpiece, the workpiece it is non-
By insulator separation between burr areas and the cathode taps, treatment fluid, the place are sprayed in the burr areas of Xiang Suoshu workpiece
The burr for managing liquid and the workpiece generates chemical reaction, and takes away the substance after reaction by the flowing of the treatment fluid to remove
Burr.
2. hard metal electrochemical deburring method as described in claim 1, which is characterized in that the hard metal workpiece is stainless
Steel.
3. hard metal electrochemical deburring method as claimed in claim 2, which is characterized in that the treatment fluid is heavy in mass ratio
It include: the sodium nitrate of 3-7%, the sodium chloride of 2.0-5%, the disodium hydrogen phosphate of 1-4%, the water greater than 80%.
4. hard metal electrochemical deburring method as claimed in claim 3, which is characterized in that the treatment fluid is heavy in mass ratio
It include: the sodium nitrate of 4-6%, the sodium chloride of 2.5-3.5%, the disodium hydrogen phosphate of 1.5-2.5%, the water greater than 80%.
5. hard metal electrochemical deburring method as claimed in claim 4, which is characterized in that the treatment fluid is heavy in mass ratio
It include: 5% sodium nitrate, 3% sodium chloride, 2% disodium hydrogen phosphate, the water greater than 80%.
6. hard metal electrochemical deburring method as claimed in claim 5, which is characterized in that the treatment fluid and the workpiece
Burr chemically react as follows:
Mn-3e=Mn3+；
Mn-2e=Mn2+；
Cr-2e=Cr2+；
Si+2H2O-4e=SiO2(s)↓+4H+；
Fe2++ e=Fe3+；
Cr-3e=Cr3+；
Fe-2e=Fe2+；
Cr2+- e=Cr3+；
Ni-2e=Ni2+；
Fe-3e=Fe3+；
4OH-- 4e=2H2O+O2(g)↑；
Mn2++2H2O-2e=MnO2(s)↓+4H+；
2Cl-- 2e=Cl2(g)↑；
7. hard metal electrochemical deburring method as claimed in claim 5, which is characterized in that the flow velocity degree of the treatment fluid is
1-3m/s。
8. such as the described in any item hard metal electrochemical deburring methods of claims 1 or 2, which is characterized in that the insulating layer
It is coated on the side surface relative to the workpiece of the cathode taps, the insulating layer is glass fibre.
9. such as the described in any item hard metal electrochemical deburring methods of claims 1 or 2, which is characterized in that the insulating layer
It is coated on the workpiece, the insulating layer is glass fibre.
10. hard metal electrochemical deburring method as described in claim 1, which is characterized in that the DC power supply is frequency
For the high frequency switch power of 30KHz-100KHz, operating voltage 2-5V.
11. a kind of hard metal Electrochemic equipment for removing burr, which is characterized in that including board, the workpiece clamp on the board
Device, the cathode taps above the work holder, insulating layer and spraying mechanism are held, on the work holder
It is clamped with workpiece, the cathode of the cathode taps connection DC power supply, the anode of the workpiece connection DC power supply；The workpiece
Apart from the cathode taps 0.3-1mm, the insulating layer is between the workpiece and the cathode taps and by the nothing of the workpiece
Burr areas is isolated with the cathode taps, and the spraying mechanism discharges treatment fluid to the burr areas of the workpiece, the work
The burr of part and the treatment fluid, which generate, chemically reacts and generates corrosive deposit, and the corrosive deposit passes through the treatment fluid band
It walks.
12. hard metal Electrochemic equipment for removing burr as claimed in claim 11, which is characterized in that the board include pedestal,
The crossbeam for upwardly extending the bracket to be formed from the pedestal and being set up on the bracket, the cathode taps are set to the crossbeam
On, the work holder is set on the pedestal and is located at the below the crossbeam.
13. hard metal Electrochemic equipment for removing burr as claimed in claim 12, which is characterized in that the work holder packet
Mobile mechanism and the fixture in the mobile mechanism are included, the mobile mechanism can move in one direction the fixture
It is dynamic, so that the state to be processed that the fixture is in state to be mounted or is located at below the cathode taps after clamping.
14. hard metal Electrochemic equipment for removing burr as claimed in claim 11, which is characterized in that the hard metal workpiece is not
Become rusty steel.
15. hard metal Electrochemic equipment for removing burr as claimed in claim 11, which is characterized in that the insulating layer is coated on institute
The side surface relative to the workpiece of cathode taps is stated, the insulating layer is glass fibre.
16. hard metal Electrochemic equipment for removing burr as claimed in claim 11, which is characterized in that the insulating layer is coated on institute
It states on workpiece, the insulating layer is glass fibre.
17. hard metal Electrochemic equipment for removing burr as claimed in claim 11, which is characterized in that the DC power supply is frequency
For the high frequency switch power of 30KHz-100KHz, operating voltage 2-5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710776676.3A CN109420810A (en) | 2017-08-31 | 2017-08-31 | Hard metal electrochemical deburring method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710776676.3A CN109420810A (en) | 2017-08-31 | 2017-08-31 | Hard metal electrochemical deburring method and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109420810A true CN109420810A (en) | 2019-03-05 |
Family
ID=65505558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710776676.3A Pending CN109420810A (en) | 2017-08-31 | 2017-08-31 | Hard metal electrochemical deburring method and apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN109420810A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843071A (en) * | 2020-07-27 | 2020-10-30 | 无锡时硕五杰机械有限公司 | Electrochemical deburring machine |
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