CN101992402B - Processing method for preventing pollutants from entering closed cavity part - Google Patents
Processing method for preventing pollutants from entering closed cavity part Download PDFInfo
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- CN101992402B CN101992402B CN 200910102739 CN200910102739A CN101992402B CN 101992402 B CN101992402 B CN 101992402B CN 200910102739 CN200910102739 CN 200910102739 CN 200910102739 A CN200910102739 A CN 200910102739A CN 101992402 B CN101992402 B CN 101992402B
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Abstract
The invention provides a processing method for preventing pollutants like metal cuttings or cooling liquid entering a closed cavity. A pipe joint is accessed to the closed cavity by taking a fabrication hole as a compressed air inlet; the compressed air is introduced from the compressed air inlet while the mechanical processing is carried out to make bigger pressure generated in the closed cavity and the pressure is discharged from micropores or gaps, and thus, the pollutants like the metal cuttings or the cooling liquid generated in the processing can be prevented from entering the closed cavity from the micropores on a neck bush pressed into a shell hole. The closed cavity part is processed by adopting the method, the pollutants like the metal cuttings or the cooling liquid can be effectively prevented from entering the closed cavity, thereby greatly improving the percent of pass of the part, eliminating the accident potential and meanwhile also facilitating the cleaning work after the part processing is ended.
Description
Technical field
The present invention relates to have the processing technology of closed cavity part, particularly process all kinds of metal shell class parts that have enclosed cavity, stop pollutants such as metal cutting or cooling fluid to get into the technological method for processing of closed cavity.
Background technology
All kinds of when having the part processing of the less closed inner chamber of import and export; Particularly in processing aero-engine part,, still adopt the processing method of part direct bore hole behind clamping on the boring machine so far for the processing that forms ring seal chamber part after cannelure in many metal-back body openings and all kinds of lining interference or the interference fits; Pollutant such as metal cutting or cooling fluid can get into enclosed cavity through the micro-hole that is pressed on the housing bore neck bush in the process; Then no matter take any method, (for example adopt compressed air to blow (malleation), or adopt compressed air to inhale (negative pressure); Also or adopt the kerosene flushing); The pollutants such as metal cutting that all are difficult to will get in the enclosed cavity are cleaned out, and often generation is stuck with valve because of pollutants such as minute metallic cuttings, causes engine product normally to use.
Summary of the invention
The present invention is directed to above problem, a kind of technological method for processing that stops pollutants such as metal cutting or cooling fluid to get into closed cavity is provided.Process of the present invention is achieved in that as shown in Figure 3; In the closed inner chamber position by oil circuit hole (F), fabrication hole (or other utilizable hole) as compressed-air actuated air inlet (K); Locate to insert a pipe joint (G) of being with sealing ring at air inlet (K), feed compressed air, when carrying out machining; In the cavity of sealing, feed compressed air; Make to produce bigger pressure in the enclosed cavity and discharge from micro-hole or slit, like this, the booties such as metal cutting or cooling fluid that just can stop generation in the processing are through being pressed in the micro-hole entering closed cavity on the housing bore neck bush.
Characteristics of the present invention are: former processing method is to let pollutants such as metal cutting or cooling fluid get in the closed cavity, then adopts these pollutants of certain method cleaning again.The last method of taking outwards to blow of the present invention does not allow pollutant to get in the closed cavity.Adopt the method for the invention processing closed cavity part, can stop pollutants such as metal cutting or cooling fluid to get into closed cavity effectively, improved the qualification rate of part greatly, eliminated accident potential; Also made things convenient for simultaneously the cleaning work after the part processing.
Description of drawings
Fig. 1 forms the enclosed cavity structural representation after a kind of engine part housing is pressed into lining.
Fig. 2 is the S-S partial sectional view of Fig. 1.
Fig. 3 feeds compressed air to stop cutting to wait pollutant to get into the enclosed cavity sketch map.
Fig. 4 is the S-S partial sectional view of Fig. 3.
Among the figure: A-enclosed cavity, B-lining aperture, C-lining macropore, D-lining, E-housing part, F-oil circuit hole, G-pipe joint, K-air inlet.
The specific embodiment:
Below by accompanying drawing and combine specific embodiment that the method for the invention is elaborated.
Process the housing part in a kind of aircraft engine fuel oil system, process is:
As depicted in figs. 1 and 2, have an oil circuit hole F on the housing part E, the lining D that will have aperture B is pressed into back formation enclosed cavity A in the housing part E hole; With the housing E clamping behind the gland on boring machine (or numerical control machining center etc.) workbench; Like Fig. 3 and shown in Figure 4; During processing lining macropore C; By the oil circuit hole F of housing part E as air admission hole; Earlier the sealing of the lower air inlet K place of F connects the pipe joint G of band tracheae in the oil circuit hole, from air admission hole K feeding compressed air, compressed air then behind the oil circuit hole F entering enclosed cavity A of housing part E by spraying the aperture B; At this moment; Pollutants such as the cutting that produces in the processing are entering lining aperture B aperture under deadweight and the pressure effect of cutter moment, is stopped by the compressed air that from lining aperture B, sprays immediately, according to active force and reaction force principle; When the active force of the pollutants such as smear metal that get into lining aperture B during greater than the compressed-air actuated reaction force that from aperture B, sprays; Pollutants such as smear metal then can overcome compressed-air actuated reaction force and get into closed ring groove A through aperture B, and when compressed-air actuated reaction force that the active force of the pollutants such as smear metal that get into lining aperture B equals from aperture B, to spray, pollutants such as smear metal are suspended in a certain position in the aperture B in the next meeting of the effect of equilibrant force; When the active force of the pollutants such as smear metal that get into aperture B during less than the compressed-air actuated reaction force that from aperture B, sprays, then compressed-air actuated reaction force can eject aperture with the pollutants such as smear metal that get into aperture B.In the processing, adjust compressed-air actuated pressure as required, make the compressed-air actuated reaction force that from aperture B, sprays active force greater than the pollutants such as smear metal that get into aperture B, thus the purpose that has realized stoping pollutant such as smear metal to get into enclosed cavity A.
As shown in Figure 1; According to the part of the original process processing engine of packing into, in use, F gets into housing to oil from the oil circuit hole; A flows out from lining aperture B through the closed ring groove; With getting into the lining macropore C for the pollutants of cleaning out such as smear metal bring out from lining aperture B among the closed ring groove A, (generally 0.005～0.01mm), the pollutants such as smear metal that bring out from lining aperture B will cause valve to be stuck because of the fit clearance of lining and valve is less easily.As shown in Figure 3, adopt method of the present invention, the compressed air that when part processing, feeds from air admission hole K has stoped pollutant entering enclosed cavity A such as smear metal, thereby has guaranteed the cleannes of motor body part effectively.
The present invention be applicable to all kinds of closed cavities have air admission hole and venthole structure zero, the processing of assembly.According to the flat shape (plane or curved surface) of air admission hole, and the situation of air admission hole (no matter being screwed hole or unthreaded hole), corresponding sealed pipe joint all can be installed, realize processing of the present invention.For closed cavity have only an air hole structure zero, assembly, can according to circumstances process a fabrication hole as air admission hole, after machining according to the inventive method, again with fabrication hole stifled on.
Claims (1)
1. stop pollutant to get into the processing method in the closed cavity part; It is characterized in that: in the closed inner chamber position by fabrication hole as compressed-air actuated air inlet (K); Locate to insert a sealed fitting (G) at air inlet (K), (K) feeds compressed air from air inlet, when carrying out machining; In the cavity of sealing, feed compressed air; Make the compressed-air actuated reaction force that from aperture B, sprays active force, produce bigger pressure in the enclosed cavity, and pollutant is discharged from micro-hole or slit thereby make greater than the smear metal pollutant that gets into aperture B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910102739 CN101992402B (en) | 2009-08-18 | 2009-08-18 | Processing method for preventing pollutants from entering closed cavity part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910102739 CN101992402B (en) | 2009-08-18 | 2009-08-18 | Processing method for preventing pollutants from entering closed cavity part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101992402A CN101992402A (en) | 2011-03-30 |
| CN101992402B true CN101992402B (en) | 2012-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910102739 Active CN101992402B (en) | 2009-08-18 | 2009-08-18 | Processing method for preventing pollutants from entering closed cavity part |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489735A (en) * | 2011-11-22 | 2012-06-13 | 东风汽车零部件(集团)有限公司 | Chip removal method by using chip liquid to reversely wash in processing of oil inlet hole of piston |
| CN104551073B (en) * | 2014-09-15 | 2017-06-20 | 包头北方创业股份有限公司 | Prevent into bits machine addition in the hole for leading to inner chamber on cavity product |
| CN104385046B (en) * | 2014-10-27 | 2016-06-22 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of method clearing up engine bearing casing part runner hole |
| CN104772495B (en) * | 2015-03-20 | 2017-03-08 | 重庆江增船舶重工有限公司 | The processing method that chip enters workpiece lumen is prevented during drilling processing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2269551B (en) * | 1992-08-06 | 1995-07-05 | Fuji Heavy Ind Ltd | Cooling and dust collecting apparatus for machine tool |
| CN2235499Y (en) * | 1995-07-04 | 1996-09-18 | 四川石油管理局川东钻探公司 | Pneumatic lifting and removing rock device for vertical drilling machine |
| CN201026496Y (en) * | 2007-02-12 | 2008-02-27 | 重庆宗申技术开发研究有限公司 | Pneumatic device for blowing shred |
| CN201161350Y (en) * | 2008-02-01 | 2008-12-10 | 春兴铸造(苏州工业园区)有限公司 | Automatic scraps blowing away machine |
-
2009
- 2009-08-18 CN CN 200910102739 patent/CN101992402B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2269551B (en) * | 1992-08-06 | 1995-07-05 | Fuji Heavy Ind Ltd | Cooling and dust collecting apparatus for machine tool |
| CN2235499Y (en) * | 1995-07-04 | 1996-09-18 | 四川石油管理局川东钻探公司 | Pneumatic lifting and removing rock device for vertical drilling machine |
| CN201026496Y (en) * | 2007-02-12 | 2008-02-27 | 重庆宗申技术开发研究有限公司 | Pneumatic device for blowing shred |
| CN201161350Y (en) * | 2008-02-01 | 2008-12-10 | 春兴铸造(苏州工业园区)有限公司 | Automatic scraps blowing away machine |
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| CN101992402A (en) | 2011-03-30 |
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