CN109732274A - The processing method of bushing aperture sealing edge with hard brittleness film layer - Google Patents
The processing method of bushing aperture sealing edge with hard brittleness film layer Download PDFInfo
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- CN109732274A CN109732274A CN201811368502.4A CN201811368502A CN109732274A CN 109732274 A CN109732274 A CN 109732274A CN 201811368502 A CN201811368502 A CN 201811368502A CN 109732274 A CN109732274 A CN 109732274A
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- bushing
- sealing edge
- film layer
- processing method
- hard
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Abstract
The invention belongs to field of machining, it is related to a kind of processing method of the bushing aperture sealing edge of hard brittleness film layer of band, include the steps that being surface-treated bushing bore area hard anodized, meanwhile the processing method of the bushing aperture sealing edge with hard brittleness film layer further includes the steps that is carried out before being surface-treated to bushing bore area hard anodized is processed bushing mouth rim；The specific implementation that bushing mouth rim is processed is: bushing mouth rim being processed into fillet or chamfering, makes do not have chromic acid process layer on the finished surface of bushing mouth rim.It can be improved processing efficiency, the present invention provides a kind of convenient for operation and the processing method of the bushing aperture sealing edge with hard brittleness film layer of stabilised quality.
Description
Technical field
The invention belongs to field of machining, processing method more particularly to a kind of band for being related to a kind of bushing aperture are firmly crisp
The processing method of the bushing aperture sealing edge of property film layer.
Background technique
Valve and bushing as shown in Figure 1 forms valve bushing combination part, there is a sealing index request.Valve is in spring
It, can be by working media import position and exit site when the tapered portion of valve being pressed against the aperture of bushing under the action of power
It disconnects, guarantees that oil plant is not greater than by valve with seal with buss position oil leak amount specified under conditions of import-export regulations pressure difference
Value.
Since the bore area of bushing has carried out hard anodized processing, the film layer that surface has one layer of hardness height, brittleness big,
Limit the processing at its orifice sealing position.The prior art is that part is first worked into size, and sharp side is processed at aperture position,
Hard anodized processing is carried out again.Since the sharp edge position in aperture after hard anodized processing produces irregular protrusion,
The finishing degree in aperture is seriously affected, and these protrusions all have very high hardness and brittleness.Use standard machinery processing method
Block easily is collapsed at aperture position, causes sealing performance unqualified.So existing first grind bushing inner hole after the surface treatment, then make
Cylinder iron dismembyator or valve repair grinding in the aperture after mouth point edge position that abrasive pastes are smeared on its surface, guarantee to seal with this
Performance requirement.Since the surface-treated layer hardness of bushing is very high, the efficiency of this processing method is extremely low.
Summary of the invention
In order to solve the above technical problems in background technology, the present invention provides one kind can be improved processing effect
Rate, convenient for operation and stabilised quality the bushing aperture sealing edge with hard brittleness film layer processing method.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of processing method of the bushing aperture sealing edge of the hard brittleness film layer of band, including to bushing bore area hard anode
The step of changing surface treatment, it is characterised in that: the processing method of the bushing aperture sealing edge of the hard brittleness film layer of band further includes
The step of being processed to bushing mouth rim of preceding progress is being surface-treated to bushing bore area hard anodized；Institute
Stating the specific implementation that bushing mouth rim is processed is: bushing mouth rim is processed into fillet or chamfering,
Make there is no chromic acid process layer on the finished surface of bushing mouth rim.
The radius of above-mentioned fillet is not more than 0.2mm, and above-mentioned chamfering is 0.2 × 45 °.
The processing method of the bushing aperture sealing edge of the above-mentioned hard brittleness film layer of band further includes to bushing bore area hard
What is carried out after anodized surface processing repairs the step of grinding bushing oral area sealing edge.
Above-mentioned repair grinds the specific implementation of bushing oral area sealing edge and is:
A) prepare the tapered surface tool with preceding guidance position；
C) hold tapered surface tool, make guide position enter bushing inner hole and with bushing inner hole；
D) rotation conic face tool or bushing carry out scraping finishing to bushing mouth rim.
The above-mentioned specific implementation for grinding bushing oral area sealing edge of repairing is between step a) and step c) further include:
B) diamond dust of 240 mesh is sprayed on the conical surface of tapered surface tool.
It is a kind of for processing the tool of the bushing aperture sealing edge with hard brittleness film layer, it is characterised in that: the kit
Guiding bar is included, the end of the guiding bar is provided with the conical surface, is coated with diamond dust on the conical surface.
The diamond dust of 240 mesh is coated on the above-mentioned conical surface.
Above-mentioned tool further includes the hand-held part being connected with guiding bar, is provided with anti-skid chequer on the hand-held part.
The invention has the advantages that
The present invention provides a kind of processing methods of the bushing aperture sealing edge of the hard brittleness film layer of band, including to bushing inner hole
The step of surface hard anodized surface processing, meanwhile, the processing method of the bushing aperture sealing edge with hard brittleness film layer is also wrapped
Include the step of being processed to bushing mouth rim of progress before being surface-treated to bushing bore area hard anodized；
The specific implementation that bushing mouth rim is processed is: bushing mouth rim being processed into fillet or chamfering, is made
There is no chromic acid process layer on the finished surface of bushing mouth rim.The present invention can control bushing orifice edge and carry out hard sun
The irregular protrusion generated in polarization process, processing efficiency are greatly improved；It can be selected according to the concrete condition of tool and bushing
It is modified manually or in grinding head, bushing aperture does not collapse block or deformation, ensure that part processing quality；Due to coating
Diamond dust, tool itself abrasion is slow, can be used for a long time, it is relatively low to share the production cost to get off.
Detailed description of the invention
Fig. 1 is valve and bushing combination the gets up schematic diagram tested；
Fig. 2 is the schematic diagram for repairing the tool for grinding bushing oral area sealing edge.
Specific embodiment
The present invention provides a kind of processing methods of the bushing aperture sealing edge of the hard brittleness film layer of band, and this method includes following
Step:
1) prepare the bar raw material of processing bushing.
2) shape for processing bushing, processes the outer shape of bushing, the shape of outer circle, end face including bushing, and lining
Radial hole on set.
3) process bushing inner hole, on lathe process bushing inner hole and its oral area end face, by its in assembly with
The bushing mouth rim of valve cone match fitting is processed into the sharp side of Glabrous thorn.
4) chromic acid anodizing surface treatment is integrally carried out to bushing.
5) conducting surface is processed, chromic acid anodizing layer is removed at some position on excircle of bushing, this position is in hard anode
Conductive use is done when change.
6) process bushing mouth rim, chamfering or rounding carried out to mouth rim in bushing, be processed into R0.2 fillet or
It is 0.2 × 45 ° of chamfering, does not have chromic acid process layer on finished surface, the step is that do not had in the prior art.
7) bushing inner hole is ground, bushing inner hole is ground using cast iron dismembyator and abrasive pastes, removes bore area
Chromic acid anodizing process layer, and polish removal bore area grinding layer, keep metallochrome.Also the processing of honing can be used
Method keeps bore area metallochrome while removing the chromic acid anodizing process layer of bore area.
8) hard anodized surface treatment is carried out to bushing inner hole；
9) bushing inner hole is ground, using cast iron dismembyator and abrasive pastes to the bushing inner hole for having hard anodized process layer
It is ground, improves the form accuracy of its surface roughness quality and inner hole.
10) it repairs and grinds bushing oral area sealing edge.The step is also no in the prior art.At bushing bore area
The feature that film hardness is high, hard brittleness is big is managed, manufactures and designs the tapered face tool with preceding guidance position, is sprayed on the conical surface
The diamond dust of 240 mesh.Scraping finishing is carried out to bushing aperture using this tool.The conical surface cutting parts of the specific purpose tool are to drawing
Leading position has higher bounce precision.Handheld tool when finishing, makes position is guided to enter bushing inner hole matched, is rotated further by
Tool or bushing carry out scraping finishing to bushing mouth rim.Tool can also be clamped on grinding headstock and be rotated, then
Hand-held bushing modifies bushing mouth rim after covering on the guidance position of tool.The bushing processed according to the above method,
It can completely be fitted closely when the cone match of its mouth rim and valve, play sealing function.
Referring to fig. 2, the present invention also provides a kind of for processing the tool of the bushing aperture sealing edge with hard brittleness film layer,
Tool includes guiding bar, and the end of guiding bar is provided with the conical surface, the diamond dust of 240 mesh is coated on the conical surface.Tool further include with
Guiding bar connected hand-held part is provided with anti-skid chequer on hand-held part.
Claims (9)
1. a kind of processing method of the bushing aperture sealing edge of the hard brittleness film layer of band, including to bushing bore area hard anodized
The step of surface treatment, it is characterised in that: the processing method of the bushing aperture sealing edge of the hard brittleness film layer of band further include
The step of being processed to bushing mouth rim of preceding progress is surface-treated to bushing bore area hard anodized；It is described
The specific implementation that bushing mouth rim is processed is: bushing mouth rim being processed into fillet or chamfering, is made
There is no chromic acid process layer on the finished surface of bushing mouth rim.
2. the processing method of the bushing aperture sealing edge of the hard brittleness film layer of band according to claim 1, it is characterised in that: institute
The radius of fillet is stated no more than 0.2mm.
3. the processing method of the bushing aperture sealing edge of the hard brittleness film layer of band according to claim 1, it is characterised in that: institute
Stating chamfering is 0.2 × 45 °.
4. the processing method of the bushing aperture sealing edge of the hard brittleness film layer of band according to claim 1 or 2 or 3, feature
Be: the processing method of the bushing aperture sealing edge of the hard brittleness film layer of band further includes to bushing bore area hard anode
What is carried out after change surface treatment repairs the step of grinding bushing oral area sealing edge.
5. the processing method of the bushing aperture sealing edge of the hard brittleness film layer of band according to claim 4, it is characterised in that: institute
It states and repairs the specific implementation for grinding bushing oral area sealing edge and be:
A) prepare the tapered surface tool with preceding guidance position；
C) hold tapered surface tool, make guide position enter bushing inner hole and with bushing inner hole；
D) rotation conic face tool or bushing carry out scraping finishing to bushing mouth rim.
6. the processing method of the bushing aperture sealing edge of the hard brittleness film layer of band according to claim 5, it is characterised in that: institute
It states and repairs the specific implementation for grinding bushing oral area sealing edge between step a) and step c) further include:
B) diamond dust of 240 mesh is sprayed on the conical surface of tapered surface tool.
7. a kind of for processing the tool of the bushing aperture sealing edge with hard brittleness film layer, it is characterised in that: the tool includes
Guiding bar, the end of the guiding bar are provided with the conical surface, are coated with diamond dust on the conical surface.
8. tool according to claim 7, it is characterised in that: be coated with the diamond dust of 240 mesh on the conical surface.
9. tool according to claim 7 or 8, it is characterised in that: the tool further include be connected with guiding bar it is hand-held
Portion is provided with anti-skid chequer on the hand-held part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368502.4A CN109732274A (en) | 2018-11-16 | 2018-11-16 | The processing method of bushing aperture sealing edge with hard brittleness film layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368502.4A CN109732274A (en) | 2018-11-16 | 2018-11-16 | The processing method of bushing aperture sealing edge with hard brittleness film layer |
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| CN109732274A true CN109732274A (en) | 2019-05-10 |
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| CN201811368502.4A Pending CN109732274A (en) | 2018-11-16 | 2018-11-16 | The processing method of bushing aperture sealing edge with hard brittleness film layer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505651A (en) * | 2021-12-29 | 2022-05-17 | 中国航发长春控制科技有限公司 | Grinding ring belt device and sealing conical surface machining method |
| CN114603350A (en) * | 2022-03-02 | 2022-06-10 | 上海现代先进超精密制造中心有限公司 | Four-degree-of-freedom fine adjustment mechanism for brittle material machining and fine adjustment method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1442851A1 (en) * | 2003-01-28 | 2004-08-04 | Heidelberger Druckmaschinen Aktiengesellschaft | Matrix for cutting and creasing, method for its manufacture, its use and machine equipped with the matrix |
| CN203401388U (en) * | 2013-06-14 | 2014-01-22 | 沈阳飞机工业（集团）有限公司 | Grinding rods of cold heading steel female dies for earring type bolts |
| CN107322243A (en) * | 2017-07-25 | 2017-11-07 | 无锡鸿海龙船机有限公司 | A kind of hydraulic bolt processing technology |
-
2018
- 2018-11-16 CN CN201811368502.4A patent/CN109732274A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1442851A1 (en) * | 2003-01-28 | 2004-08-04 | Heidelberger Druckmaschinen Aktiengesellschaft | Matrix for cutting and creasing, method for its manufacture, its use and machine equipped with the matrix |
| CN203401388U (en) * | 2013-06-14 | 2014-01-22 | 沈阳飞机工业（集团）有限公司 | Grinding rods of cold heading steel female dies for earring type bolts |
| CN107322243A (en) * | 2017-07-25 | 2017-11-07 | 无锡鸿海龙船机有限公司 | A kind of hydraulic bolt processing technology |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505651A (en) * | 2021-12-29 | 2022-05-17 | 中国航发长春控制科技有限公司 | Grinding ring belt device and sealing conical surface machining method |
| CN114603350A (en) * | 2022-03-02 | 2022-06-10 | 上海现代先进超精密制造中心有限公司 | Four-degree-of-freedom fine adjustment mechanism for brittle material machining and fine adjustment method thereof |
| CN114603350B (en) * | 2022-03-02 | 2024-04-02 | 上海现代先进超精密制造中心有限公司 | Four-degree-of-freedom fine adjustment mechanism for processing and assembling brittle materials and fine adjustment method thereof |
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Application publication date: 20190510 |
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