CN207294910U - A kind of aluminum piston differential arc oxidation special fixture - Google Patents
A kind of aluminum piston differential arc oxidation special fixture Download PDFInfo
- Publication number
- CN207294910U CN207294910U CN201721182974.1U CN201721182974U CN207294910U CN 207294910 U CN207294910 U CN 207294910U CN 201721182974 U CN201721182974 U CN 201721182974U CN 207294910 U CN207294910 U CN 207294910U
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- China
- Prior art keywords
- piston
- differential arc
- ring
- special fixture
- arc oxidation
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Abstract
A kind of aluminum piston differential arc oxidation special fixture disclosed in the utility model, including oxidation trough and sealing device, are respectively arranged with piston, pneumatic jack conductive mechanism in oxidation trough；Sealing device is socketed on piston, and the insulation positioner being in contact with sealing device is also socketed with piston, and insulation positioner is located at below sealing device.Locally need to use backbone sealing ring as protective device at protective position in piston; certain radial direction clamp force is produced to axial by the cutting edge pressure of lip under backbone sealing ring and the convergent force of self-tightening spring; so as to only carry out differential arc oxidation processing to piston crown and top, avoid occurring peroxidating phenomenon in edge.
Description
Technical field
The utility model belongs to clamp art, is related to a kind of aluminum piston differential arc oxidation special fixture.
Background technology
" heart " of the aluminum piston as novel natural gas engine, is chronically at high temperature, high pressure and easily rubbed etc. is disliked
Under bad operating condition, especially because the characteristic of natural gas, the corrosive gas that can cause to produce in combustion process accelerates to live
The corrosion failure of plug；Simultaneously because the effect of heat engine fatigue, the mechanical failure of piston can be further speeded up.Therefore, by aluminium
The surface of piston processed carries out differential arc oxidation processing, to obtain high rigidity, high-wearing feature, highly corrosion resistant and high temperature resistance thermal impact
Ceramic layer, so as to improve the performance of piston and extend its service life.
Mainly in head and tip position, in order to reduce the energy consumption in production process, improve production in the workspace of piston
Efficiency, reduces production cost, differential arc oxidation processing region is primarily directed to workspace needed for product.Piston exclusive clamps at this stage
Tool disclosure satisfy that the piston high temperature resistant to be reached in differential arc oxidation processing procedure (1500 DEG C of transient temperature), resistance to electric arc are hit
Wear, high pressure resistant (600V or so), and be only sufficient to the requirement for meeting the processing of piston top surface differential arc oxidation.And asked there are following
Topic：(1) piston special fixture is complicated, cost is high；(2) piston crown assembles downward, is easily formed in head cavity
Gather qi together phenomenon, so that the membrane uniformity obtained is poor；(3) localised protection is not in place, easily peroxide occurs in the edge of protection
Change phenomenon.
Utility model content
The purpose of this utility model is to provide a kind of aluminum piston differential arc oxidation special fixture, uniform film can be obtained
Layer.
The utility model is the technical scheme adopted is that a kind of aluminum piston differential arc oxidation special fixture, including oxidation trough
And sealing device, piston, pneumatic jack conductive mechanism are respectively arranged with oxidation trough；Sealing device is socketed on piston, on piston also
The insulation positioner being in contact with sealing device is socketed with, insulation positioner is located at below sealing device.
The utility model is also characterized by
Oxidation trough includes offering in upper and lower sequentially connected first oxidation trough and the second oxidation trough, the first oxidation trench bottom
Sealing hole, the second oxidation trench bottom are provided with groove.
Pneumatic jack conductive mechanism includes anode conducting piece and cathode conductive sheet, and piston is positioned over anode conducting on piece, and anode is led
Electric piece is connected with anode fixed mandril, and anode fixed mandril is placed in groove, and the diameter of anode fixed mandril is less than the width of groove
Degree, bottom portion of groove are connected with compressed air channel, and cathode conductive sheet is located in the first oxidation trough.
Sealing device includes upper trim ring, and upper trim ring is threaded with lower clamping ring, in the space that upper trim ring is formed with lower clamping ring
It is provided with backbone sealing ring.
The section of upper trim ring includes horizon bar, and horizon bar both ends are connected with the first side lever and the second side lever, the second side lever
Length is less than the length of the first side lever；The cross sectional shape of lower clamping ring is L-type, and the first side lever is threaded on the inside of lower clamping ring, the
One side lever one end is higher by lower clamping ring and forms groove a, the second side lever and the horizontal side shape of lower clamping ring with the vertical side of lower clamping ring
Into groove b.
Backbone sealing ring includes high fire-retardance rubber, and high fire-retardance rubber includes two first sides being parallel to each other, two
Second side, one of first side and the iron-clad skeleton that L-type is inlaid with second side are vertically connected between a side,
One end away from iron-clad skeleton on second side is provided with lip, and spring is provided with the inside of the tail end of another first side
Groove, is provided with self-tightening spring in spring groove, and lower lip is provided with the outside of the first side tail end where spring groove.
Upper lip internal diameter is equal with piston outer diameter, and lower lip diameter is less than piston diameter.
Insulation positioner includes the locating ring being socketed on piston, and the internal diameter of locating ring is more than the outside diameter of piston.
The beneficial effects of the utility model are：
(1) the aluminum piston differential arc oxidation special fixture of the utility model, piston crown is assembled upwards, prevents piston sheet
There is gather qi together in the combustion chamber of body, so as to obtain uniform film layer；
(2) the aluminum piston differential arc oxidation special fixture of the utility model, locally needs to use at protective position in piston
Backbone sealing ring is as protective device, by the cutting edge pressure of lip under backbone sealing ring and the convergent force of self-tightening spring to axial direction
Certain radial direction clamp force is produced, so as to only carry out differential arc oxidation processing to piston crown and top, avoids occurring in edge
Oxidative phenomena；
(3) the aluminum piston differential arc oxidation special fixture of the utility model, simple in structure, cost is low, and produce and
High yield rate.
Brief description of the drawings
Fig. 1 is a kind of sectional view of aluminum piston differential arc oxidation special fixture of the utility model；
Fig. 2 is a kind of sectional view of aluminum piston differential arc oxidation special fixture inner sealing device of the utility model；
Fig. 3 is a kind of sectional view of aluminum piston differential arc oxidation special fixture inner frame sealing ring of the utility model.
In figure, 1. oxidation troughs, 2. pistons, trim ring on 3., 3-1. horizon bars, the first side levers of 3-2., the second side levers of 3-3., 4.
Lower clamping ring, 5. backbone sealing rings, 6. high fire-retardance rubber, 7. first sides, 8. second sides, 9. iron-clad skeletons, lip on 10.,
11. spring groove, 12. self-tightening springs, 13. times lips, 14. locating rings, 15. first oxidation troughs, 16. second oxidation troughs, 17. sealings
Hole, 18. grooves, 19. anode conducting pieces, 20. cathode conductive sheets, 21. anode fixed mandrils, 22. compressed air channels, 23. into
Water lines, 24. discharge pipe lines, 25. special sealing rings, 26. groove a, 27. groove b.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of aluminum piston differential arc oxidation special fixture of the utility model, as shown in Figure 1, being filled including oxidation trough 1 and sealing
Put, sealing device socket is also socketed with the insulation positioner being in contact with sealing device on the piston 2, on piston 2, and insulation is fixed
Position device is located at below sealing device, prevents sealing device slide downward；Sealing device includes upper trim ring 3, the section of upper trim ring 3
Including horizon bar 3-1, horizon bar 3-1 both ends are connected with the first side lever 3-2 and the second side lever 3-3, and the length of the second side lever 3-3 is small
In the length of the first side lever 3-2；The cross sectional shape of lower clamping ring 4 is L-type, and the first side lever 3-2 is threaded in the inner side of lower clamping ring 4,
First side lever 3-2 one end is higher by lower clamping ring 4 and forms groove a26, the second side lever 3-3 with pushing with the vertical side of lower clamping ring 4
Enclose 4 horizontal sides and form groove b27.O-ring seal, upper trim ring 3 and 4 shape of lower clamping ring are provided between upper trim ring 3 and lower clamping ring 4
Into space in be provided with backbone sealing ring 5.
Pneumatic jack conductive mechanism is provided with oxidation trough 1, oxidation trough 1 is included in upper and lower sequentially connected first oxidation trough, 15 He
Second oxidation trough 16,15 bottom of the first oxidation trough offers sealing hole 17, in use, special sealing ring 25 connects with sealing hole 17
Touch；Piston 2 is located in oxidation trough 1, in use, oxidation trough 1 is stretched into the top of piston 2 from sealing hole 17 carries out differential arc oxidation, second
16 bottom of oxidation trough sets fluted 18；
Oxidation trough 1 is also associated with solution circulating device, and solution circulating device includes inlet pipeline 23 and discharge pipe line 24, into
Water lines 23 are connected to the top of oxidation trough 1, and solution enters oxidation trough 1 from inlet pipeline 23, and discharge pipe line 24 is connected to the first oxygen
Change 15 bottom of groove, when liquid level is excessive in the first oxidation trough 15, discharge solution from discharge pipe line 24.
Pneumatic jack conductive mechanism includes anode conducting piece 19 and cathode conductive sheet 20, and piston 2 is positioned on anode conducting piece 19,
Anode conducting piece 19 is connected with anode fixed mandril 21, and anode fixed mandril 21 is placed in groove 18, anode fixed mandril 21
Diameter is less than the width of groove 18, O-ring seal is provided with the gap of anode fixed mandril 21 and groove 18, to prevent gas
Body leaks；18 bottom of groove is connected with compressed air channel 22, and compressed air channel 22 is provided with intake valve and air bleeding valve, uses
When, intake valve is opened, gases at high pressure enter groove 18 from compressed air channel 22, so as to anode fixed mandril 21 be jacked up, sun
Pole fixed mandril 21 promotes anode conducting piece 19, into making the upper trim ring 3 on piston 2 head into sealing hole 17, by piston 2 and first
15 bottom of oxidation trough is sealed；Cathode conductive sheet 20 is connected in the first oxidation trough 15 by conducting wire.
As shown in Fig. 2, backbone sealing ring 5 includes high fire-retardance rubber 6, high fire-retardance rubber 6 include two be parallel to each other the
A side 7, second side 8, one of first side 7 and edge in second side 8 are vertically connected between two first sides 7
Iron-clad skeleton 9 embedded with L-type, one end away from iron-clad skeleton 9 on second side 8 are provided with lip 10, another first side
Spring groove 11 is provided with the inside of the tail end on side 7, self-tightening spring 12, the first side where spring groove 11 are provided with spring groove 11
Lower lip 13 is provided with the outside of 7 tail ends；In use, the first side 7 for being inlaid with iron-clad skeleton 9 is placed in the groove of trim ring 3, the
Dual side-edge 8 is disposed vertically in groove b27.Upper 10 internal diameter of lip is equal with 2 overall diameter of piston, and lower 13 diameter of lip is less than piston
2 diameters, have certain " interference volume ", when backbone sealing ring 5 is socketed on the piston 2, the cutting edge pressure and self-tightening of lower lip 13
The convergent force of spring 12 produces axial direction certain radial direction clamp force, and self-tightening spring 12 can compensate oneself of backbone sealing ring 5 at any time
Clamp force, so as to piston 2 with playing a protective role at the sealing of sealing hole 17.
Insulation positioner includes being socketed in the locating ring 14 at 2 oil ring position of piston, and the internal diameter of locating ring 14, which is more than, lives
The outside diameter of plug 2, is furnished with three shop bolts, locating ring 14 is fixed on piston by shop bolt along 14 1 weeks average marks of locating ring
On 2.
A kind of operation principle of aluminum piston differential arc oxidation special fixture of the utility model is as follows：
To piston 2 carry out differential arc oxidation processing when, first locating ring 14 is socketed at 2 oil ring position of piston, and with position
Pin fixes locating ring 14；Lower clamping ring 4, backbone sealing ring 5 and upper trim ring 3 are socketed on the piston 2 successively again, Special seal
Circle 25 is socketed on groove a26；Then piston 2 is vertically arranged on anode conducting piece 19, and 2 position of piston and 17 phase of sealing hole
It is right, open the intake valve of compressed air channel 22, gases at high pressure jack up conductive anode rod 21, and promote anode conducting piece 19 and
Piston 2 enters at sealing hole 17, and special sealing ring 25 carries out tensioner, opens the valve on inlet pipeline 23, solution is entered the
One oxidation trough 15, only realizes that top land more than 13 position of lower lip of backbone sealing ring 5 and head are carried out at differential arc oxidation
Reason；After micro-arc oxidation process is disposed, the valve on inlet pipeline 23 is closed, is discharged solution by discharge pipe line 24,
The air bleeding valve on compressed air channel 22 is opened, the piston 2 after oxidation processes is taken out from oxidation trough 1, and according to above-mentioned
Oxidation flow, which puts into new piston, can carry out continuous production.
In the above manner, the aluminum piston differential arc oxidation special fixture of the utility model, piston crown is assembled upwards,
Prevent occurring gather qi together in the combustion chamber of piston only, so as to obtain uniform film layer；The aluminum piston differential of the arc oxygen of the utility model
Change special fixture, locally need to use backbone sealing ring to pass through backbone sealing ring as protective device at protective position in piston
The cutting edge pressure of lower lip and the convergent force of self-tightening spring produce certain radial direction clamp force to axial, thus only to piston crown and
Top carries out differential arc oxidation processing, avoids occurring peroxidating phenomenon in edge；The aluminum piston differential arc oxidation of the utility model
Special fixture, simple in structure, cost is low, and production and high yield rate.
Claims (8)
1. a kind of aluminum piston differential arc oxidation special fixture, it is characterised in that including oxidation trough (1) and sealing device, the oxygen
Change in groove (1) and be respectively arranged with piston (2), pneumatic jack conductive mechanism；The sealing device is socketed on piston (2), the piston
(2) the insulation positioner being in contact with sealing device is also socketed with, the insulation positioner is located at below sealing device.
A kind of 2. aluminum piston differential arc oxidation special fixture as claimed in claim 1, it is characterised in that the oxidation trough (1)
Including being opened up in upper and lower sequentially connected first oxidation trough (15) and the second oxidation trough (16), the first oxidation trough (15) bottom
There is sealing hole (17), the second oxidation trough (16) bottom sets fluted (18).
A kind of 3. aluminum piston differential arc oxidation special fixture as claimed in claim 2, it is characterised in that the pneumatic jack conduction machine
Structure includes anode conducting piece (19) and cathode conductive sheet (20), and the piston (2) is positioned on anode conducting piece (19), the sun
Pole conductive sheet (19) is connected with anode fixed mandril (21), and the anode fixed mandril (21) is placed in groove (18), the sun
The diameter of pole fixed mandril (21) is less than the width of groove (18), and groove (18) bottom is connected with compressed air channel
(22), the cathode conductive sheet (20) is located in the first oxidation trough (15).
A kind of 4. aluminum piston differential arc oxidation special fixture as claimed in claim 1, it is characterised in that the sealing device bag
Include trim ring (3), the upper trim ring (3) is threaded with lower clamping ring (4), in the space that upper trim ring (3) is formed with lower clamping ring (4)
It is provided with backbone sealing ring (5).
A kind of 5. aluminum piston differential arc oxidation special fixture as claimed in claim 4, it is characterised in that the upper trim ring (3)
Section include horizon bar (3-1), horizon bar (3-1) both ends are connected with the first side lever (3-2) and the second side lever (3-3),
The length of second side lever (3-3) is less than the length of the first side lever (3-2)；The cross sectional shape of the lower clamping ring (4) is L-type,
First side lever (3-2) is threaded on the inside of lower clamping ring (4), and described first side lever (3-2) one end is higher by lower clamping ring (4) simultaneously
Groove a (26) is formed with the vertical side of lower clamping ring (4), second side lever (3-3) forms recessed with lower clamping ring (4) horizontal side
Groove b (27).
A kind of 6. aluminum piston differential arc oxidation special fixture as claimed in claim 5, it is characterised in that the backbone sealing ring
(5) high fire-retardance rubber (6) is included, the high fire-retardance rubber (6) includes two first sides (7) being parallel to each other, described two
Second side (8) is vertically connected between first side (7), one of them described first side (7) and edge in second side (8)
Iron-clad skeleton (9) embedded with L-type, one end away from iron-clad skeleton (9) is provided with lip (10) on the second side (8),
Spring groove (11) is provided with the inside of the tail end of another first side (7), self-tightening bullet is provided with the spring groove (11)
Spring (12), first side (7) tail end outside where the spring groove (11) are provided with lower lip (13).
A kind of 7. aluminum piston differential arc oxidation special fixture as claimed in claim 6, it is characterised in that the upper lip (10)
Internal diameter is equal with piston (2) overall diameter, and lower lip (13) diameter is less than piston (2) diameter.
A kind of 8. aluminum piston differential arc oxidation special fixture as claimed in claim 1, it is characterised in that the insulation positioning dress
The locating ring (14) including being socketed on piston (2) is put, the internal diameter of the locating ring (14) is more than the outside diameter of piston (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721182974.1U CN207294910U (en) | 2017-09-15 | 2017-09-15 | A kind of aluminum piston differential arc oxidation special fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721182974.1U CN207294910U (en) | 2017-09-15 | 2017-09-15 | A kind of aluminum piston differential arc oxidation special fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207294910U true CN207294910U (en) | 2018-05-01 |
Family
ID=62441417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721182974.1U Expired - Fee Related CN207294910U (en) | 2017-09-15 | 2017-09-15 | A kind of aluminum piston differential arc oxidation special fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207294910U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487316A (en) * | 2018-12-20 | 2019-03-19 | 西安理工大学 | A kind of micro-arc oxidation process special equipment |
| CN109504997A (en) * | 2018-11-16 | 2019-03-22 | 中国航发西安动力控制科技有限公司 | Hard anodized minor insulation protective device |
| CN110904488A (en) * | 2019-12-09 | 2020-03-24 | 湖南湘投金天科技集团有限责任公司 | Micro-arc oxidation method and titanium alloy structural part obtained by adopting same |
| CN114318464A (en) * | 2021-12-06 | 2022-04-12 | 中国兵器科学研究院宁波分院 | Local micro-arc oxidation treatment method for high-silicon die-cast aluminum alloy piston |
-
2017
- 2017-09-15 CN CN201721182974.1U patent/CN207294910U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504997A (en) * | 2018-11-16 | 2019-03-22 | 中国航发西安动力控制科技有限公司 | Hard anodized minor insulation protective device |
| CN109487316A (en) * | 2018-12-20 | 2019-03-19 | 西安理工大学 | A kind of micro-arc oxidation process special equipment |
| CN110904488A (en) * | 2019-12-09 | 2020-03-24 | 湖南湘投金天科技集团有限责任公司 | Micro-arc oxidation method and titanium alloy structural part obtained by adopting same |
| CN110904488B (en) * | 2019-12-09 | 2021-08-10 | 湖南湘投金天科技集团有限责任公司 | Micro-arc oxidation method and titanium alloy structural part obtained by adopting same |
| CN114318464A (en) * | 2021-12-06 | 2022-04-12 | 中国兵器科学研究院宁波分院 | Local micro-arc oxidation treatment method for high-silicon die-cast aluminum alloy piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 Termination date: 20210915 |