CN103072019B - Internally-supported gapless spool mandrel for V-shaped ball valve - Google Patents
Internally-supported gapless spool mandrel for V-shaped ball valve Download PDFInfo
- Publication number
- CN103072019B CN103072019B CN201310010193.4A CN201310010193A CN103072019B CN 103072019 B CN103072019 B CN 103072019B CN 201310010193 A CN201310010193 A CN 201310010193A CN 103072019 B CN103072019 B CN 103072019B
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- CN
- China
- Prior art keywords
- tight sleeve
- spool
- pressing sleeve
- mandrel
- gapless
- 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
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- Valve Housings (AREA)
Abstract
The invention relates to an internally-supported gapless spool mandrel for a V-shaped ball valve. The internally-supported gapless spool mandrel for the V-shaped ball valve comprises a mandrel body (1) and is characterized in that a left pressing sleeve (3) and a right pressing sleeve (5) are respectively sheathed on the mandrel body (1) in a spool (2) to be machined, a gap is left between the left pressing sleeve (3) and the right pressing sleeve (5), a nut (4) is sheathed on the outer wall of the left pressing sleeve (3), and the nut (4) is in threaded fit with the outer wall of the left pressing sleeve (3), so that the gap between the left pressing sleeve (3) and the right pressing sleeve (5) can be increased by adjusting the nut (4) to enable the left pressing sleeve (3) and the right pressing sleeve (5) to be pressed against inner walls on the two sides of the spool (2) to be machined. According to trial use, when the internally-supported gapless spool mandrel for the V-shaped ball valve is used for machining the spool, the spool is not deformed during machining and the requirements of drawings can be fully satisfied.
Description
Technical field
The present invention relates to a kind of V-type ball valve inner support gapless spool mandrel.
Background technology
Find in the ball core sphere process of V-type ball valve at present, processing method comprises turning and grinding two kinds, no matter any processing method, all needs to use mandrel to position clamping.But because V-type ball core is incomplete sphere core, its structure is asymmetric, mutability, causes machining accuracy greatly to reduce.Such as use current mandrel (see accompanying drawing 1) in clamping process, ball core easily deforms, and owing to there is fit clearance between the axis hole of ball core and mandrel, cause ball core to have in process to beat, the circularity causing ball core to be processed and surface roughness do not reach drawing requirement, cause bulk article to scrap even sometimes.
Summary of the invention
The object of this invention is to provide a kind of V-type ball valve inner support gapless spool mandrel, ball core clamping deformation can be prevented, thus improve the precision of ball core sphere processing.
A kind of V-type ball valve inner support gapless spool mandrel, comprise mandrel body, its special feature is: the mandrel body between ball core to be processed is respectively installed with left side tight sleeve and right side tight sleeve, and on the left of this, leave gap between tight sleeve and right side tight sleeve, a nut is set with in addition on the outer wall of left side tight sleeve, it is threaded engagement between the outer wall of this nut and left side tight sleeve, thus by regulating this nut to increase the gap of left side tight sleeve and right side tight sleeve to make left side tight sleeve and right side tight sleeve be pressed on the inwall of ball core both sides to be processed.
The surface wherein contacted with ball outer core to be processed on mandrel body is provided with chamfering.
Wherein chamfering is 30 degree.
Through probationary certificate, V-type ball valve inner support gapless spool mandrel of the present invention is adopted to process ball core, ball core circularity≤0.01, the surface roughness of ball core turning reaches 1.6, and the surface roughness of grinding reaches 0.4, ball core distortion free in process, drawing requirement can be met completely, in V-type ball valve assembling process, one time assembly qualified rate reaches more than 95%, and valve performance is stablized.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of background technology in the present invention;
Accompanying drawing 2 is using state schematic diagram of the present invention;
Accompanying drawing 3 is the partial enlarged drawing at II place in Fig. 2.
Detailed description of the invention
As shown in Figure 2, the present invention is a kind of V-type ball valve inner support gapless spool mandrel, comprise mandrel body 1, mandrel body 1 between ball core 2 to be processed is respectively installed with left side tight sleeve 3 and right side tight sleeve 5, and on the left of this, leave gap between tight sleeve 3 and right side tight sleeve 5, a nut 4 is set with in addition on the outer wall of left side tight sleeve 3, be threaded engagement between this nut 4 and outer wall of left side tight sleeve 3, thus the gap by regulating this nut 4 to increase left side tight sleeve 3 and right side tight sleeve 5 makes left side tight sleeve 3 and right side tight sleeve 5 be pressed on the inwall of ball core 2 both sides to be processed, realize the inner support to ball core, ball core is prevented to be out of shape in process.
As shown in Figure 3, mandrel body 1 is provided with chamfering with the surface of ball core 2 wall contacts to be processed, chamfering is specially 30 degree, adopt this little chamfer design effectively can remove fit clearance, the gap between ball core and mandrel body 1 mating holes is made to be zero, realize ball core without beating in process, the circularity of guarantee ball core processing and surface roughness.Identical with background technology in addition, on the right side of ball core 2 to be processed, packing ring 6 and hold-down nut 7 are also installed.
Claims (1)
1. a V-type ball valve inner support gapless spool mandrel, comprise mandrel body (1), it is characterized in that: the mandrel body (1) between ball core (2) to be processed is respectively installed with left side tight sleeve (3) and right side tight sleeve (5), and on the left of this, leave gap between tight sleeve (3) and right side tight sleeve (5), a nut (4) is set with in addition on the outer wall of left side tight sleeve (3), be threaded engagement between the outer wall of this nut (4) and left side tight sleeve (3), thus the gap by regulating this nut (4) to increase left side tight sleeve (3) and right side tight sleeve (5) makes left side tight sleeve (3) and right side tight sleeve (5) be pressed on the inwall of ball core (2) both sides to be processed,
Wherein surface that is upper at mandrel body (1) and ball core (2) wall contacts to be processed is provided with chamfering;
Wherein chamfering is 30 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310010193.4A CN103072019B (en) | 2013-01-11 | 2013-01-11 | Internally-supported gapless spool mandrel for V-shaped ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310010193.4A CN103072019B (en) | 2013-01-11 | 2013-01-11 | Internally-supported gapless spool mandrel for V-shaped ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103072019A CN103072019A (en) | 2013-05-01 |
| CN103072019B true CN103072019B (en) | 2015-06-17 |
Family
ID=48148822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310010193.4A Expired - Fee Related CN103072019B (en) | 2013-01-11 | 2013-01-11 | Internally-supported gapless spool mandrel for V-shaped ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103072019B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4327470C1 (en) * | 1993-08-16 | 1995-01-19 | Mtu Friedrichshafen Gmbh | Valve gear actuating element |
| CN102229033A (en) * | 2010-09-26 | 2011-11-02 | 上海交运汽车精密冲压件有限公司 | Cam limiting device for welding tool |
| CN202225046U (en) * | 2011-09-19 | 2012-05-23 | 天津精通控制仪表技术有限公司 | Special clamping fixture for grinding valve core of V-shaped globe valve |
| CN202240574U (en) * | 2011-09-19 | 2012-05-30 | 天津精通控制仪表技术有限公司 | Special clamping fixture for machining valve core shaft hole of V-shaped ball valve |
| CN202317726U (en) * | 2011-11-23 | 2012-07-11 | 东方电气集团东方电机有限公司 | Positioning tensioner |
| CN102727161A (en) * | 2012-07-24 | 2012-10-17 | 高全文 | Integrated inner support device for mandibular angle cosmetic surgery |
-
2013
- 2013-01-11 CN CN201310010193.4A patent/CN103072019B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4327470C1 (en) * | 1993-08-16 | 1995-01-19 | Mtu Friedrichshafen Gmbh | Valve gear actuating element |
| CN102229033A (en) * | 2010-09-26 | 2011-11-02 | 上海交运汽车精密冲压件有限公司 | Cam limiting device for welding tool |
| CN202225046U (en) * | 2011-09-19 | 2012-05-23 | 天津精通控制仪表技术有限公司 | Special clamping fixture for grinding valve core of V-shaped globe valve |
| CN202240574U (en) * | 2011-09-19 | 2012-05-30 | 天津精通控制仪表技术有限公司 | Special clamping fixture for machining valve core shaft hole of V-shaped ball valve |
| CN202317726U (en) * | 2011-11-23 | 2012-07-11 | 东方电气集团东方电机有限公司 | Positioning tensioner |
| CN102727161A (en) * | 2012-07-24 | 2012-10-17 | 高全文 | Integrated inner support device for mandibular angle cosmetic surgery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103072019A (en) | 2013-05-01 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20150617 Termination date: 20220111 |