CN203726338U - Fixture for machining special-shaped nozzle needle valves - Google Patents
Fixture for machining special-shaped nozzle needle valves Download PDFInfo
- Publication number
- CN203726338U CN203726338U CN201420088355.6U CN201420088355U CN203726338U CN 203726338 U CN203726338 U CN 203726338U CN 201420088355 U CN201420088355 U CN 201420088355U CN 203726338 U CN203726338 U CN 203726338U
- Authority
- CN
- China
- Prior art keywords
- fixture
- nozzle needle
- special
- shaped nozzle
- valve body
- 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
Abstract
The utility model discloses a fixture for machining special-shaped nozzle needle valves. The fixture is characterized by comprising a fixing frame (3); a 'V'-shaped clamp (4) is arranged at one end of the fixing frame (3), a columnar positioning block (5) is arranged at the opposite end of the fixing frame (3), an outer circle of a special-shaped nozzle needle valve (1) is in zero-clearance fit with the 'V'-shaped clamp (4), and a ball head (4) of the special-shaped nozzle needle valve (1) is connected with the columnar positioning block (5) in a contact manner. The fixture has the advantage that by the aid of the fixture, the problem of difficulty in guaranteeing the roundness of rear seat surfaces in special-shaped nozzle needle valve machining procedures in the industry due to the fact that the traditional fixture-lining combinations are adopted in the machining procedures can be solved.
Description
Technical field
the utility model relates to Machining Technology field, is specifically related to a kind of special-shaped oil nozzle needle-valve body fixture for processing.
Background technology
At present, enterprise is in the time producing special-shaped oil nozzle needle-valve body, conventionally the process route adopting is: corase grind cylindrical-fine grinding mesopore-draw and grind mesopore-corase grind seat surface-fine grinding seat surface, taking needle-valve body mesopore as positioning datum, adopting lining to locate to process seat surface, but because mesopore guiding is short, position stability is poor, during again because of processing, needle-valve body must rotate, and lining and mesopore are taked little matched in clearance, more than after processing, the circularity of seat surface does not ensure technological requirement 1.2Um like this.
Summary of the invention
The utility model is for the problem of above-mentioned existence, a kind of special-shaped oil nozzle needle-valve body fixture for processing has been proposed, object is to overcome in the inherent working special-shaped oil nozzle needle-valve body process of industry, adopts the circularity of traditional fixture-lining rear seat surface in process to be difficult to the problem ensureing.
The utility model is achieved through the following technical solutions:
A kind of special-shaped oil nozzle needle-valve body fixture for processing, it is characterized in that: described fixture comprises fixed mount (3), fixed mount (3) one end is provided with " V " type fixture block (4), opposite end is provided with column locating piece (5), the cylindrical of special-shaped oil nozzle needle-valve body (1) coordinates with " V " type fixture block (4) gapless, and the ball head (4) of special-shaped oil nozzle needle-valve body (1) is connected with column locating piece (5) contact.
The further Technological improvement plan of the utility model is:
Described column locating piece (5) is rotationally connected by bearing (6) and fixed mount (3).
The utility model compared with prior art, has following obvious advantage: the utility model is existing using the little cylindrical of needle-valve body and bulb as positioning datum, and roundness of external circle all ensures in 0.5Um.Large cylindrical is that gapless coordinates with "V"-block, processes like this seat surface circularity and ensures in 1.0Um, effectively improves couple seat surface sealing property, brings up to present more than 75% from original 50%.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, the utility model fixture comprises fixed mount 3, fixed mount 3 one end are provided with " V " type fixture block 4, opposite end is provided with column locating piece 5, the cylindrical of special-shaped oil nozzle needle-valve body 1 coordinates with " V " type fixture block 4 gaplesss, the ball head 4 of special-shaped oil nozzle needle-valve body 1 is connected with column locating piece 5 contacts, and column locating piece 5 is rotationally connected by bearing 6 and fixed mount 3.
This method does not relate to partly all prior aries that maybe can adopt same as the prior art and is realized.
Claims (2)
1. a special-shaped oil nozzle needle-valve body fixture for processing, it is characterized in that: described fixture comprises fixed mount (3), fixed mount (3) one end is provided with " V " type fixture block (4), opposite end is provided with column locating piece (5), the cylindrical of special-shaped oil nozzle needle-valve body (1) coordinates with " V " type fixture block (4) gapless, and the ball head (4) of special-shaped oil nozzle needle-valve body (1) is connected with column locating piece (5) contact.
2. the special-shaped oil nozzle needle-valve body of one according to claim 1 fixture for processing, is characterized in that: described column locating piece (5) is rotationally connected by bearing (6) and fixed mount (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088355.6U CN203726338U (en) | 2014-02-28 | 2014-02-28 | Fixture for machining special-shaped nozzle needle valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088355.6U CN203726338U (en) | 2014-02-28 | 2014-02-28 | Fixture for machining special-shaped nozzle needle valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203726338U true CN203726338U (en) | 2014-07-23 |
Family
ID=51196446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420088355.6U Expired - Fee Related CN203726338U (en) | 2014-02-28 | 2014-02-28 | Fixture for machining special-shaped nozzle needle valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203726338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524369A (en) * | 2019-08-30 | 2019-12-03 | 无锡威孚马山油泵油嘴有限公司 | A kind of co-rail oil injection mouth needle-valve body shape grinding process |
-
2014
- 2014-02-28 CN CN201420088355.6U patent/CN203726338U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524369A (en) * | 2019-08-30 | 2019-12-03 | 无锡威孚马山油泵油嘴有限公司 | A kind of co-rail oil injection mouth needle-valve body shape grinding process |
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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 |
Granted publication date: 20140723 Termination date: 20150228 |
|
| EXPY | Termination of patent right or utility model |