CN103072019A - 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
- CN103072019A CN103072019A CN2013100101934A CN201310010193A CN103072019A CN 103072019 A CN103072019 A CN 103072019A CN 2013100101934 A CN2013100101934 A CN 2013100101934A CN 201310010193 A CN201310010193 A CN 201310010193A CN 103072019 A CN103072019 A CN 103072019A
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- CN
- China
- Prior art keywords
- spool
- mandrel
- pressing sleeve
- tight sleeve
- ball valve
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- 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.)
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- Multiple-Way Valves (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 to the V-type ball valve at present, processing method comprises two kinds of turning and grindings, no matter any processing method all needs to use mandrel to position clamping.But because V-type ball core is the incomplete sphere core, its structure is asymmetric, mutability, causes machining accuracy greatly to reduce.For example use present mandrel (referring to accompanying drawing 1) in clamping process, the ball core easily deforms, and owing to having fit clearance between the axis hole of ball core and the mandrel, causing the ball core to have in process beats, cause circularity and the surface roughness of the processing of ball core not to reach drawing requirement, even cause sometimes bulk article to scrap.
Summary of the invention
The purpose of this invention is to provide a kind of V-type ball valve inner support gapless spool mandrel, can prevent ball core clamping deformation, thereby improve the precision of ball core sphere processing.
A kind of V-type ball valve inner support gapless spool mandrel, comprise the 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 between this left side tight sleeve and right side tight sleeve, leave the gap, outer wall at the left side tight sleeve is set with a nut in addition, be threaded engagement between the outer wall of this nut and left side tight sleeve, thereby the gap that can increase by regulating this nut left side tight sleeve and right side tight sleeve is pressed on the inwall of ball core to be processed both sides left side tight sleeve and right side tight sleeve.
The surface that wherein contacts with ball outer core to be processed on the mandrel body is provided with chamfering.
Wherein chamfering is 30 degree.
Through probationary certificate, adopt V-type ball valve inner support gapless spool mandrel of the present invention that the ball core is processed, 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, can satisfy drawing requirement fully, in V-type ball valve assembling process, one time assembly qualified rate reaches more than 95%, and valve performance is stable.
Description of drawings
Accompanying drawing 1 is the structural representation of background technology among the present invention;
Accompanying drawing 2 is use view of the present invention;
Accompanying drawing 3 is the partial enlarged drawing at II place among Fig. 2.
The specific embodiment
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 between this left side tight sleeve 3 and right side tight sleeve 5, leave the gap, outer wall at left side tight sleeve 3 is set with a nut 4 in addition, be threaded engagement between the outer wall of this nut 4 and left side tight sleeve 3, thereby the gap that can increase by regulating this nut 4 left side tight sleeve 3 and right side tight sleeve 5 is pressed on the inwall of ball core to be processed 2 both sides left side tight sleeve 3 and right side tight sleeve 5, realization prevents that to the inner support of ball core the ball core is out of shape in process.
As shown in Figure 3, the surface that contacts with ball core 2 outer walls to be processed on mandrel body 1 is provided with chamfering, chamfering is specially 30 degree, adopt this little chamfer design can effectively remove fit clearance, making the gap between ball core and mandrel body 1 mating holes is zero, realization ball core without beating, guarantees circularity and the surface roughness of ball core processing in process.Identical with background technology is on the right side of ball core 2 to be processed packing ring 6 and hold-down nut 7 to be installed also in addition.
Claims (3)
1. 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 to be processed (2) is respectively installed with left side tight sleeve (3) and right side tight sleeve (5), and between this left side tight sleeve (3) and right side tight sleeve (5), leave the gap, outer wall at left side tight sleeve (3) is set with a nut (4) in addition, be threaded engagement between the outer wall of this nut (4) and left side tight sleeve (3), thereby the gap that can increase by regulating this nut (4) left side tight sleeve (3) and right side tight sleeve (5) is pressed on the inwall of ball core to be processed (2) both sides left side tight sleeve (3) and right side tight sleeve (5).
2. a kind of V-type ball valve inner support gapless spool mandrel as claimed in claim 1 is characterized in that: wherein be provided with chamfering on the upper surface that contacts with ball core to be processed (2) outer wall of mandrel body (1).
3. a kind of V-type ball valve inner support gapless spool mandrel as claimed in claim 2 is characterized in that: 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 true CN103072019A (en) | 2013-05-01 |
| CN103072019B 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 |
|---|---|
| CN103072019B (en) | 2015-06-17 |
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Granted publication date: 20150617 Termination date: 20220111 |