CN202894781U - Positioning clamp for processing excircle of valve core - Google Patents
Positioning clamp for processing excircle of valve core Download PDFInfo
- Publication number
- CN202894781U CN202894781U CN 201220497103 CN201220497103U CN202894781U CN 202894781 U CN202894781 U CN 202894781U CN 201220497103 CN201220497103 CN 201220497103 CN 201220497103 U CN201220497103 U CN 201220497103U CN 202894781 U CN202894781 U CN 202894781U
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- CN
- China
- Prior art keywords
- mandrel
- floating centre
- spool
- positioning fixture
- finial
- 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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Abstract
A positioning clamp for processing the excircle of a valve core satisfies the requirement that the axis of the excircle is coaxial to the axes of two mandrels and perpendicular to the end faces of the mandrels. The valve core comprises a valve plate and two mandrels at both sides of the valve plate, and the positioning clamp for processing the excircle of the valve core comprises a finial on one top center of one mandrel and a float finial on the top center of the other mandrel, a positioning block which contacts the end face of the other mandrel for planar positioning, and a self-centering chuck for clamping the positioning block, wherein the axis of the mandrel with the float finial is movably arranged in the float final hole in the positioning block, and an elastic element is arranged between the positioning block and the float finial to allow the float finial extending out of the float finial hole under normal state.
Description
Technical field
Present technique relates to the spool cylindrical is added man-hour and the positioning fixture that uses.
Background technology
Existing spool comprises valve plate and is positioned at two mandrels of valve plate both sides.The morpheme of mandrel cylindrical is had relatively high expectations, the axis of this cylindrical not only will with the axis coaxle of two mandrels, and vertical with the end face of mandrel.If adopt Double Tops point location, can only satisfy the requirement of the axis coaxle of the axis of cylindrical and two mandrels; If adopt the end face location of mandrel, can only satisfy the axis requirement vertical with the end face of mandrel of cylindrical.Both need to meet the demands, also do not have suitable positioning fixture at present.
Summary of the invention
The purpose of present technique provides a kind of during to the mandrel Excircle machining, can satisfy simultaneously axis and the axis coaxle degree of two mandrels and the spool Excircle machining positioning fixture that requires with the end face of mandrel perpendicularity of cylindrical.
This spool Excircle machining positioning fixture, described spool comprises valve plate and is positioned at two mandrels of valve plate both sides, spool Excircle machining positioning fixture comprises be used to the floating centre of top, the end face central part that is used for withstanding on another mandrel of an end face central part that withstands on a mandrel, is used for carrying out with the end contact of another mandrel the locating piece of face location, is used for the self-centering chuck of clamping and positioning piece; In floating centre is arranged on floating centre hole in the locating piece movably along the axis of mandrel, when between positioning body and floating centre, being provided with normality so that floating centre stretches out the flexible member in floating centre hole.
The beneficial effect of present technique: present technique adopts floating centre and (common) combination top and locating piece to solve the deficiencies in the prior art.Specifically, when top when workpiece is held out against, floating centre is inevitable mobile and return in the floating centre hole vertically, because the effect of flexible member, floating centre still heads on mandrel, and the end face of the mandrel that contacts with floating centre simultaneously carries out face with locating piece and contacts, and realizes the end face location.That is to say, present technique has realized the location of mandrel axis and the location of end face of mandrel simultaneously, carry out the Excircle machining of mandrel at this location lower clamp workpiece, just can guarantee the axis of mandrel cylindrical and two mandrel axis axiality and with the double requirements of end face of mandrel perpendicularity.
Above-mentioned spool Excircle machining positioning fixture is provided with for the elasticity adjusting device of adjusting flexible member elastic force at positioning body.Described elasticity original paper is spiral compression spring, and described elasticity adjusting device is the bolt that is threaded connection with locating piece, and spiral compression spring is arranged between bolt and the floating centre.
Above-mentioned spool Excircle machining positioning fixture, self-centering chuck is scroll chuck.Self-centering chuck is prior art, but namely the claw radial concentric moves and makes the self centering chuck of workpiece.
Description of drawings
Fig. 1 is the schematic diagram of spool Excircle machining positioning fixture.
The specific embodiment
Shown in Fig. 1,2, spool 1 comprises valve plate 11 and is positioned at two mandrels 12,13 of valve plate both sides.Spool Excircle machining positioning fixture comprises be used to the floating centre 3 of top 2, the left side central part that is used for withstanding on mandrel 12 of the right side central part that withstands on mandrel 13, be used for contact with the left side of mandrel 12 and carry out the locating piece 4 of face location, for the three-jaw self-centering chuck 5 of clamping and positioning piece.In floating centre is arranged on floating centre hole 41 in the locating piece 4 movably along the axis of mandrel, when between positioning body and floating centre, being provided with normality so that floating centre stretches out the spiral compression spring 6 in floating centre hole.Bolt 7 is threaded connection on positioning body, and spiral compression spring 6 is arranged between bolt and the floating centre.By the turn bolt can spiral compression spring 6 elastic force.
Claims (4)
1. spool Excircle machining positioning fixture, described spool comprises valve plate and is positioned at two mandrels of valve plate both sides, it is characterized in that: spool Excircle machining positioning fixture comprises be used to the floating centre of top, the end face central part that is used for withstanding on another mandrel of an end face central part that withstands on a mandrel, is used for carrying out with the end contact of another mandrel the locating piece of face location, is used for the self-centering chuck of clamping and positioning piece; In floating centre is arranged on floating centre hole in the locating piece movably along the axis of mandrel, when between positioning body and floating centre, being provided with normality so that floating centre stretches out the flexible member in floating centre hole.
2. spool Excircle machining positioning fixture as claimed in claim 1 is characterized in that: be provided with for the elasticity adjusting device of adjusting flexible member elastic force at positioning body.
3. spool Excircle machining positioning fixture as claimed in claim 2, it is characterized in that: described elasticity original paper is spiral compression spring, described elasticity adjusting device is the bolt that is threaded connection with locating piece, and spiral compression spring is arranged between bolt and the floating centre.
4. spool Excircle machining positioning fixture as claimed in claim 1, it is characterized in that: self-centering chuck is scroll chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220497103 CN202894781U (en) | 2012-09-26 | 2012-09-26 | Positioning clamp for processing excircle of valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220497103 CN202894781U (en) | 2012-09-26 | 2012-09-26 | Positioning clamp for processing excircle of valve core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202894781U true CN202894781U (en) | 2013-04-24 |
Family
ID=48115497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220497103 Expired - Fee Related CN202894781U (en) | 2012-09-26 | 2012-09-26 | Positioning clamp for processing excircle of valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202894781U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102935592A (en) * | 2012-09-26 | 2013-02-20 | 溧阳市瑞丰金属制品有限公司 | Positioning fixture for processing valve element outer circles |
| CN103990820A (en) * | 2014-06-05 | 2014-08-20 | 厦门大学 | Composite positioning tip device used for machining spiral groove of screw rotor |
| CN111421368A (en) * | 2020-05-15 | 2020-07-17 | 沈阳飞机工业（集团）有限公司 | Adjustable axial positioning device of lathe |
| CN111618386A (en) * | 2020-05-21 | 2020-09-04 | 上海诺玛液压系统有限公司 | Fixture for precisely machining working edge of valve pocket of servo valve |
-
2012
- 2012-09-26 CN CN 201220497103 patent/CN202894781U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102935592A (en) * | 2012-09-26 | 2013-02-20 | 溧阳市瑞丰金属制品有限公司 | Positioning fixture for processing valve element outer circles |
| CN103990820A (en) * | 2014-06-05 | 2014-08-20 | 厦门大学 | Composite positioning tip device used for machining spiral groove of screw rotor |
| CN111421368A (en) * | 2020-05-15 | 2020-07-17 | 沈阳飞机工业（集团）有限公司 | Adjustable axial positioning device of lathe |
| CN111618386A (en) * | 2020-05-21 | 2020-09-04 | 上海诺玛液压系统有限公司 | Fixture for precisely machining working edge of valve pocket of servo valve |
| CN111618386B (en) * | 2020-05-21 | 2023-02-03 | 上海诺玛液压系统有限公司 | Fixture for precisely machining working edge of valve pocket of servo valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20130926 |