CN204458164U - High-pressure co-rail pad - Google Patents
High-pressure co-rail pad Download PDFInfo
- Publication number
- CN204458164U CN204458164U CN201420864145.1U CN201420864145U CN204458164U CN 204458164 U CN204458164 U CN 204458164U CN 201420864145 U CN201420864145 U CN 201420864145U CN 204458164 U CN204458164 U CN 204458164U
- Authority
- CN
- China
- Prior art keywords
- hole
- pressure
- shim body
- pin
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000003754 machining Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 2
- 229910001651 emery Inorganic materials 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The utility model relates to a kind of high-pressure co-rail pad, comprises shim body, and shim body center portion offers the center hole of shoulder hole structure, offers inclined hole immediately below center hole, is positioned at center hole left and right sides symmetry and offers pin-and-hole; There is end face at two ends, shim body left and right respectively plain grinding, and the parallelism between two end faces is 0um-5um, and the planeness of end face is 0.8um-1.5um, and the roughness Rz of two end faces is all less than 1.6; High and the appearance looks elegant of the utility model size requirement, reliable and stable, be applicable to high pressure co-rail system; Adopt Double face grinding technology to process, more convenient than traditional grinding, working efficiency is high.
Description
Technical field
The utility model 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.
Model utility content
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 technological scheme that the utility model adopts 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.
The beneficial effects of the utility model are 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 utility model; 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 utility model (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, embodiment of the present utility model 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.
The utility model processing method 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 the utility model machining accuracy, 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 to explanation of the present utility model, and be not the restriction to model utility, the utility model limited range, see claim, within protection domain of the present utility model, 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 |
|---|---|---|---|
| CN201420864145.1U CN204458164U (en) | 2014-12-31 | 2014-12-31 | High-pressure co-rail pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864145.1U CN204458164U (en) | 2014-12-31 | 2014-12-31 | High-pressure co-rail pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204458164U true CN204458164U (en) | 2015-07-08 |
Family
ID=53665064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420864145.1U Expired - Fee Related CN204458164U (en) | 2014-12-31 | 2014-12-31 | High-pressure co-rail pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204458164U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564472A (en) * | 2014-12-31 | 2015-04-29 | 无锡威孚马山油泵油嘴有限公司 | High-pressure common-rail type gasket |
-
2014
- 2014-12-31 CN CN201420864145.1U patent/CN204458164U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564472A (en) * | 2014-12-31 | 2015-04-29 | 无锡威孚马山油泵油嘴有限公司 | High-pressure common-rail type gasket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150708 |