CN104564472A - High-pressure common-rail type gasket - Google Patents
High-pressure common-rail type gasket Download PDFInfo
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- CN104564472A CN104564472A CN201410847041.4A CN201410847041A CN104564472A CN 104564472 A CN104564472 A CN 104564472A CN 201410847041 A CN201410847041 A CN 201410847041A CN 104564472 A CN104564472 A CN 104564472A
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- hole
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- center
- pressure common
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- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to a high-pressure common-rail type gasket. The high-pressure common-rail type gasket comprises a gasket body; a center hole of a stepped hole structure is formed in the center of the gasket body; an inclined hole is formed under the center hole; pin holes are symmetrically formed in the left side and the right side of the center hole; end surfaces are respectively horizontally grinded at the left end and the right end of the gasket body; the parallelism between the two end surfaces is 0 to 5 microns, and the flatness of the end surfaces is 0.8 to 1.5 microns; the roughness Rz of the two end surfaces is less than 1.6. The high-pressure common-rail type gasket is high in requirement on dimension, nice in appearance, and applicable to a high-pressure common-rail system; the gasket is processed by the double-end-surface grinding technology which is more convenient and faster than the traditional grinding process, and moreover, the working efficiency is high.
Description
Technical field
The present invention relates to high-pressure common rail oil injection technical field, especially a kind of high-pressure co-rail pad.
Background technique
High-pressure common rail oil injection technology is one of fuel injection technic of advanced person the most at present, is worldwide used widely.High pressure co-rail system be a kind of typical time m-pressure control type oil-fired system, the independence realizing fuel feeding and oil spout controls, and has that injection pressure is high, control freedom degree is large, can realize the features such as multi-injection.The pad used in high-pressure common rail oil injection technology requires that machining accuracy is higher, and the parallelism particularly between two end faces and planeness, roughness are all higher, to ensure highly to be total to the reliability of system and the stability of rail pressure; Usually adopted plain grinding technical approach to carry out grinding to pad one end face, manual spacer sheet position after completing in the past, then carry out grinding to other end, this kind of method efficiency is low, and machining accuracy is low, easily produces waste product, haves much room for improvement.
Summary of the invention
The applicant, for the shortcoming in above-mentioned existing production technology, provides the processing method of a kind of high-pressure co-rail pad rational in infrastructure and optimization, thus promotes the machining accuracy of high-pressure common rail pad, changes the outward appearance of pad, increases work efficiency.
The technical solution adopted in the present invention is as follows:
A kind of high-pressure co-rail pad, comprise shim body, described shim body center portion offers center hole, and described center hole is shoulder hole, offers inclined hole immediately below described center hole, is positioned at center hole left and right sides symmetry and offers pin-and-hole; There is end face at two ends, described shim body left and right respectively plain grinding, and the parallelism between two end faces is 0um-5um, and the planeness of described end face is 0.8um-1.5um, and the roughness Rz of described two end faces is all less than 1.6.
Further improvement as technique scheme:
Angle a between the center line of described inclined hole and horizontal plane is 5 °-6 °.
Two pin-and-holes are positioned at same level position, and the centre distance b between two pin-and-holes is 9mm-12mm.
Centre distance b between two pin-and-holes is 11mm.
Spacing c between the horizontal center line of described pin-and-hole and the horizontal center line of shim body is 1mm.
Beneficial effect of the present invention is as follows:
Double face grinding process application in the process of high-pressure common rail pad processing technology, is achieved consecutive production, boosts productivity by the present invention; The cutting force utilizing the emery wheel of both ends of the surface to produce obtains desired vertical degree, parallelism and surface roughness.
Accompanying drawing explanation
Fig. 1 is plan view of the present invention (whole-cutaway view).
Fig. 2 is the side view of Fig. 1.
Wherein: 1, shim body; 101, end face; 2, center hole; 3, pin-and-hole; 4, inclined hole.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 1 and Figure 2, the high-pressure co-rail pad of the present embodiment, comprise shim body 1, shim body 1 center portion offers center hole 2, center hole 2 is shoulder hole structure, offer inclined hole 4 immediately below center hole 2, be positioned at center hole 2 left and right sides symmetry and offer pin-and-hole 3, pin-and-hole 3 plays the effect of location when pad is installed; There is end face 101 at shim body about 1 two ends respectively plain grinding, and the parallelism between two end faces 101 is 0um-5um, and the planeness of end face 101 is 0.8um-1.5um, and the roughness Rz of two end faces 101 is all less than 1.6.
Angle a between the center line of inclined hole 4 and horizontal plane is 5 °-6 °.
Two pin-and-holes 3 are positioned at same level position, and the centre distance b between two pin-and-holes 3 is 9mm-12mm.
Preferably, the centre distance b between two pin-and-holes 3 is 11mm.
Spacing c between the horizontal center line of pin-and-hole 3 and the horizontal center line of shim body 1 is 1mm.
Processing method of the present invention is specific as follows:
The first step, center hole 2 is gone out in alignment shim body 1 center portion, goes out chamfering, and remove burr to center hole 2 car;
Second step, in center hole 2 left and right sides, symmetrical position goes out pin-and-hole 3,
3rd step: go out inclined hole 4 below center hole 2;
4th step, after fixing shim body 1, adopts Double face grinding technology to carry out mill end face 101 simultaneously, utilizes two emery wheel same-directional high-speeds to rotate the cutting force formed and polishes end face 101.
High and the appearance looks elegant of machining accuracy of the present invention, size requirement is high, thus goes for high pressure co-rail system, reliable and stable, Double face grinding technology belongs to leading technique at home, more convenient than traditional grinding, working efficiency is improved, and saves process time, machining accuracy is guaranteed simultaneously, make left and right faces parallel remain on below 5um, planeness is at about 1um, and two, left and right surface roughness Rz is all below 1.6.
More than describing is explanation of the invention, and be not the restriction to invention, limited range of the present invention, see claim, within protection scope of the present invention, can do any type of amendment.
Claims (5)
1. a high-pressure co-rail pad, it is characterized in that: comprise shim body (1), described shim body (1) center portion offers center hole (2), described center hole (2) is shoulder hole, offer inclined hole (4) immediately below described center hole (2), be positioned at center hole (2) left and right sides symmetry and offer pin-and-hole (3); There is end face (101) at described shim body (1) two ends, left and right respectively plain grinding, parallelism between two end faces (101) is 0um-5um, the planeness of described end face (101) is 0.8um-1.5um, and the roughness (Rz) of described two end faces (101) is all less than 1.6.
2. high-pressure co-rail pad as claimed in claim 1, is characterized in that: the angle (a) between the center line of described inclined hole (4) and horizontal plane is 5 °-6 °.
3. high-pressure co-rail pad as claimed in claim 1, it is characterized in that: two pin-and-holes (3) are positioned at same level position, the centre distance (b) between two pin-and-holes (3) is 9mm-12mm.
4. high-pressure co-rail pad as claimed in claim 3, is characterized in that: the centre distance (b) between two pin-and-holes (3) is 11mm.
5. high-pressure co-rail pad as claimed in claim 1, is characterized in that: the spacing (c) between the horizontal center line of described pin-and-hole (3) and the horizontal center line of shim body (1) is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410847041.4A CN104564472A (en) | 2014-12-31 | 2014-12-31 | High-pressure common-rail type gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410847041.4A CN104564472A (en) | 2014-12-31 | 2014-12-31 | High-pressure common-rail type gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104564472A true CN104564472A (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410847041.4A Pending CN104564472A (en) | 2014-12-31 | 2014-12-31 | High-pressure common-rail type gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104564472A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106181236A (en) * | 2016-07-13 | 2016-12-07 | 无锡派乐科技有限公司 | High-pressure co-rail pad and manufacture method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200978753Y (en) * | 2006-11-15 | 2007-11-21 | 广西玉柴机器股份有限公司 | Fuel injector sealing gasket |
| JP4184741B2 (en) * | 2001-09-22 | 2008-11-19 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Injection valve for internal combustion engine |
| CN202468120U (en) * | 2012-01-19 | 2012-10-03 | 中国重汽集团济南动力有限公司 | Fuel injector gasket |
| CN102862023A (en) * | 2012-08-29 | 2013-01-09 | 苏州市意可机电有限公司 | Machining process of positioning gasket |
| CN203308631U (en) * | 2013-06-21 | 2013-11-27 | 中国重汽集团重庆燃油喷射系统有限公司 | Gasket structure |
| CN204458164U (en) * | 2014-12-31 | 2015-07-08 | 无锡威孚马山油泵油嘴有限公司 | High-pressure co-rail pad |
-
2014
- 2014-12-31 CN CN201410847041.4A patent/CN104564472A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4184741B2 (en) * | 2001-09-22 | 2008-11-19 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Injection valve for internal combustion engine |
| CN200978753Y (en) * | 2006-11-15 | 2007-11-21 | 广西玉柴机器股份有限公司 | Fuel injector sealing gasket |
| CN202468120U (en) * | 2012-01-19 | 2012-10-03 | 中国重汽集团济南动力有限公司 | Fuel injector gasket |
| CN102862023A (en) * | 2012-08-29 | 2013-01-09 | 苏州市意可机电有限公司 | Machining process of positioning gasket |
| CN203308631U (en) * | 2013-06-21 | 2013-11-27 | 中国重汽集团重庆燃油喷射系统有限公司 | Gasket structure |
| CN204458164U (en) * | 2014-12-31 | 2015-07-08 | 无锡威孚马山油泵油嘴有限公司 | High-pressure co-rail pad |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106181236A (en) * | 2016-07-13 | 2016-12-07 | 无锡派乐科技有限公司 | High-pressure co-rail pad and manufacture method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |
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| RJ01 | Rejection of invention patent application after publication |