CN104385187A - Pneumatic rubber expansion core shaft - Google Patents
Pneumatic rubber expansion core shaft Download PDFInfo
- Publication number
- CN104385187A CN104385187A CN201410646814.2A CN201410646814A CN104385187A CN 104385187 A CN104385187 A CN 104385187A CN 201410646814 A CN201410646814 A CN 201410646814A CN 104385187 A CN104385187 A CN 104385187A
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- CN
- China
- Prior art keywords
- rubber sleeve
- pneumatic
- mandrel
- rubber
- pneumatic cylinder
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/40—Expansion mandrels
- B23B31/404—Gripping the work or tool by jaws moving radially controlled by conical surfaces
- B23B31/4053—Gripping the work or tool by jaws moving radially controlled by conical surfaces using fluid-pressure means to actuate the gripping means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention discloses a pneumatic rubber expansion core shaft. The pneumatic rubber expansion core shaft comprises a core shaft and a top sleeve, wherein the core shaft is provided with a shaft shoulder; a first stepped hole is formed in the top sleeve, the first stepped hole comprises a large-diameter hole and two small-diameter holes which are equal in radius, and the two small-diameter holes are matched with the core shaft; a first rubber sleeve and a second rubber sleeve are respectively arranged in positions, which are positioned at two sides of the top sleeve, of the core shaft in a sleeving way, the first rubber sleeve is close to the shaft shoulder, the second rubber sleeve is far away from the shaft shoulder, a separating piece is arranged between the first rubber sleeve and the shaft shoulder, the outer side of the second rubber sleeve is also provided with a pneumatic cylinder, the pneumatic cylinder is also internally provided with a pneumatic valve, the pneumatic valve leans against the inner wall of the pneumatic cylinder, and the outer side of the pneumatic valve is provided with a pushing rod. According to the pneumatic rubber expansion core shaft disclosed by the invention, the technical defect that the supporting location on a pipe cannot be accurately carried out by using the pipe as the center or the requirement on the roughness of the inner wall of the pipe is higher at present is overcome, accurate location can be carried out by using the pipe as the center, and the requirement on the roughness of the inner wall of the pipe is not high.
Description
Technical field
The invention belongs to the supporting and location field of pipe fitting, be specifically related to a kind of pneumatic rubber expanding arbor.
Background technology
At present, man-hour is being added to pipe fitting, jaw is normally adopted to clamp the end of pipe fitting, the rotation of pipe fitting is driven again by the rotation of jaw, thus the outer wall of pipe fitting is processed, but due to jaw clamp pipe fitting time with the endoporus center of pipe fitting, pipe fitting is not positioned, therefore, when carrying out fine finishining to pipe fitting, the machining accuracy of pipe fitting cannot be ensured, and at present in practical operation, also people is had to position pipe fitting with mandrel, be placed on mandrel by pipe fitting, rotated by the pipe fitting that rotarily drives of mandrel again, thus pipe fitting is processed, but when adopting this kind of mode to locate, in order to ensure that mandrel accurately can be located pipe fitting with the endoporus center of pipe fitting, mandrel must be in the center of pipe fitting, thus it is higher to the roughness requirements of pipe fitting inner wall, and be hard material due to mandrel and pipe fitting, therefore gap can be there is unavoidably when mandrel coordinates with pipe fitting, thus when mandrel rotates easily and pipe fitting skid, and then can not process accurately pipe fitting.
Summary of the invention
The technical problem to be solved in the present invention can not accurately be located with pipe fitting center or the technological deficiency higher to pipe fitting inner wall roughness requirements for the current supporting and location to pipe fitting, provides a kind of and accurately can locate with pipe fitting center and the pneumatic rubber expanding arbor not high to pipe fitting inner wall roughness requirements.
In order to solve the problems of the technologies described above, the invention provides following technical scheme: pneumatic rubber expanding arbor, comprise mandrel and top cover, described mandrel is provided with the shaft shoulder; Be provided with the first shoulder hole in described top cover, described first shoulder hole comprises a hole, the large footpath diameter holes equal with two radiuses, and hole, described large footpath is between two diameter holes, and top cover is sheathed on mandrel and two diameter holes coordinate with mandrel; Both sides place mandrel being positioned at top cover is respectively equipped with the first rubber sleeve and the second rubber sleeve, described first rubber sleeve near the shaft shoulder, the second rubber sleeve away from the shaft shoulder, also catch is provided with between described first rubber sleeve and the shaft shoulder, and all offset between catch and the shaft shoulder, between catch and the first rubber sleeve, the outside of described second rubber sleeve is also provided with pneumatic cylinder, mandrel is in the pneumatic cylinder in position, end of second rubber sleeve one end, also pneumatic operated valve is provided with in pneumatic cylinder, the inwall of described pneumatic operated valve and pneumatic cylinder offsets, and the outside of pneumatic operated valve is provided with push rod.
Adopt the pneumatic rubber expanding arbor of technical solution of the present invention, comprise mandrel, mandrel is used for support rubber cover, top cover and catch, thus support tubes, the shaft shoulder on mandrel, for supporting catch, avoids gear to slide to the outside of mandrel; Top cover is for compressing the first rubber sleeve and supporting the second rubber sleeve, thus extruding the first rubber sleeve and the second rubber sleeve, make the first rubber sleeve and the second rubber sleeve produce distortion, the first shoulder hole is provided with in top cover, first shoulder hole comprises a hole, large footpath and two diameter holes, the hole, large footpath of the first shoulder hole is positioned at the centre of two diameter holes, two diameter holes of the first shoulder hole coordinate with mandrel, thus form a cavity between hole, footpath and mandrel greatly, save the material manufacturing top cover; First rubber sleeve and the second rubber sleeve are elastomeric material, first rubber sleeve and the second rubber sleeve can produce distortion when being squeezed, thus push against pipe fitting, catch is used for keeping out the first rubber sleeve, thus coordinate top cover to extrude the first rubber sleeve together, make the first rubber sleeve distortion and then push against pipe fitting; Pneumatic cylinder is connected with the second rubber sleeve, thus extrude the second rubber sleeve after gas pressurized in pneumatic cylinder, make the second rubber sleeve distortion push against pipe fitting, pneumatic operated valve can slide in pneumatic cylinder, thus the gas extruded in pneumatic cylinder and then the air pressure increased in pneumatic cylinder, push rod is for promoting pneumatic operated valve.
Know-why of the present invention and technique effect are: inwardly promote push rod, pneumatic operated valve is inwardly slided, because pneumatic operated valve and pneumatic cylinder inwall offset, i.e. pneumatic operated valve, pneumatic cylinder and the second rubber sleeve form a closed cavity, along with the movement that pneumatic operated valve is inside, the volume of described cavity reduces, thus the air pressure in cavity increases, and then extrude flexible second rubber sleeve, due to the transmission of power, top cover also gives the first rubber sleeve an extruding force, and be fixed on mandrel due to catch, thus catch will hinder the movement of the first rubber sleeve and the second rubber sleeve, therefore under the acting in conjunction of catch and pneumatic cylinder, first rubber sleeve and the second rubber sleeve produce distortion, thus the gap between filling mandrel and pipe fitting, push against pipe fitting.Because mandrel in implementation process is positioned at the center of pipe fitting, mandrel connects with on lathe, thus the present invention can position with the position of mandrel, namely position pipe fitting with the center of pipe fitting, therefore accurately can process pipe fitting; Due to can clog after the first rubber sleeve and the second rubber sleeve extrusion gap between pipe fitting and mandrel, namely can the rough pitting that causes because of too coarse of tampon tube part inwall, thus push against pipe fitting, avoid pipe fitting and mandrel skids, and avoid the location inaccuracy caused because pipe fitting inner wall is too coarse, low to the roughness requirements of pipe fitting inner wall.
Further, be provided with the second shoulder hole in described pneumatic cylinder, described second shoulder hole comprises macropore and aperture, and described macropore is connected with the second rubber sleeve, and described pneumatic operated valve is located in aperture.Because the gas in same cavity is to the pressure equal and opposite in direction of chamber outer wall, therefore the pressure size of the gas in pneumatic cylinder to the second clamping sleeve and the pressure equal and opposite in direction to pneumatic operated valve, and power equals the product of pressure and area, therefore pneumatic operated valve is positioned at aperture can reduce to promote push rod thrust when ensureing that gas is constant to the second rubber sleeve pressure.
Further, described diameter holes and mandrel matched in clearance.Thus top cover can be slided on mandrel.
Further, the external diameter 1mm larger than the internal diameter of pipe fitting of described first rubber sleeve, the external diameter of described second rubber sleeve finishes the large 1mm of internal diameter of pipe fitting.The surplus of 1mm can make the first rubber sleeve and the second rubber sleeve more easily push against pipe fitting.
Further, described top cover is duralumin lining, and described catch is duralumin catch, and described pneumatic cylinder is the pneumatic cylinder of duralumin.Duralumin good mechanical property, intensity is large, and density is little, thus top cover and catch can extrude the first rubber sleeve better, and top cover and pneumatic operated valve can extrude the second rubber sleeve better, and lighter when installing/dismounting.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solution of the present invention is further illustrated:
Fig. 1 is the schematic diagram of pneumatic rubber expanding arbor of the present invention;
Fig. 2 is the schematic diagram of top cover.
Detailed description of the invention
Wherein: mandrel 1, pipe fitting 2, the shaft shoulder 3, catch 4, first rubber sleeve 5, top cover 6, second rubber sleeve 7, pneumatic cylinder 8, pneumatic operated valve 9, push rod 10, handle 11, macropore 12, aperture 13, large hole, footpath 14, diameter holes 15.
As shown in Figure 1, pneumatic rubber expanding arbor 1 of the present invention, comprises mandrel 1 and top cover 6, and described mandrel 1 is provided with the shaft shoulder 3, described top cover 6 is duralumin material, the external diameter of top cover 6 is less than the internal diameter of pipe fitting 2, the first shoulder hole is provided with in top cover 6, described first shoulder hole comprises hole, a large footpath 14 diameter holes 15 equal with two radiuses, hole 14, described large footpath is between two diameter holes 15, as shown in Figure 2, top cover 6 to be sheathed on mandrel 1 and two diameter holes 15 and mandrel 1 matched in clearance, both sides place mandrel 1 being positioned at top cover 6 is arranged with the first rubber sleeve 5 and the second rubber sleeve 7 respectively, described first rubber sleeve 5 is near the shaft shoulder 3, second rubber sleeve 7 is away from the shaft shoulder 3, first rubber sleeve 5 and the second rubber sleeve 7 all closely cooperate with mandrel 1, all large than the internal diameter of pipe fitting 2 1mm of external diameter of the first rubber sleeve 5 and the second rubber sleeve 7, duralumin catch 4 is also provided with between described first rubber sleeve 5 and the shaft shoulder 3, and between catch 4 and the shaft shoulder 3, all offset between catch 4 and the first rubber sleeve 5, the outside of described second rubber sleeve 7 is also provided with pneumatic cylinder 8, pneumatic cylinder 8 is duralumin material, the second shoulder hole is provided with in pneumatic cylinder 8, second shoulder hole comprises macropore 12 and aperture 13, macropore 12 is connected with the second rubber sleeve 7, pneumatic operated valve 9 is provided with in aperture 13, second rubber sleeve 7, pneumatic cylinder 8 and pneumatic operated valve 9 form a closed cavity jointly, the outside of pneumatic operated valve 9 is provided with push rod 10, push rod 10 is provided with handle 11.
In specific implementation process, driving handle 11, i.e. promotion push rod 10, pneumatic operated valve 9 is inwardly slided, extrude the gas in pneumatic cylinder 8, thus the air pressure in pneumatic cylinder 8 is increased, and then extruding the second rubber sleeve 7, due to the transfer principle of power, first rubber sleeve 5 is also subject to an extruding force, the first rubber sleeve 5 and the second rubber sleeve 7 is made to produce distortion, thus outwardly convex, extruding pipe fitting 2, push against by pipe fitting 2, locate, then the motor that unlatching is connected with mandrel 1 can carry out fine finishining to pipe fitting 2.
For a person skilled in the art, under the prerequisite not departing from structure of the present invention, can also make some distortion and improvement, these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.
Claims (5)
1. pneumatic rubber expanding arbor, is characterized in that: comprise mandrel and top cover, and described mandrel is provided with the shaft shoulder; Be provided with the first shoulder hole in described top cover, described first shoulder hole comprises a hole, the large footpath diameter holes equal with two radiuses, and hole, described large footpath is between two diameter holes, and top cover is sheathed on mandrel and two diameter holes coordinate with mandrel; Both sides place mandrel being positioned at top cover is arranged with the first rubber sleeve and the second rubber sleeve respectively, described first rubber sleeve near the shaft shoulder, the second rubber sleeve away from the shaft shoulder, also catch is provided with between described first rubber sleeve and the shaft shoulder, and all offset between catch and the shaft shoulder, between catch and the first rubber sleeve, the outside of described second rubber sleeve is also provided with pneumatic cylinder, mandrel is positioned at pneumatic cylinder near the end of second rubber sleeve one end, also pneumatic operated valve is provided with in pneumatic cylinder, the inwall of described pneumatic operated valve and pneumatic cylinder offsets, and the outside of pneumatic operated valve is provided with push rod.
2. pneumatic rubber expanding arbor as claimed in claim 1, it is characterized in that: be provided with the second shoulder hole in described pneumatic cylinder, described second shoulder hole comprises macropore and aperture, and described macropore is connected with the second rubber sleeve, and described pneumatic operated valve is located in aperture.
3. pneumatic rubber expanding arbor as claimed in claim 1 or 2, is characterized in that: described diameter holes and mandrel matched in clearance.
4. pneumatic rubber expanding arbor as claimed in claim 1 or 2, it is characterized in that: the external diameter 1mm larger than the internal diameter of pipe fitting of described first rubber sleeve, the external diameter of described second rubber sleeve finishes the large 1mm of internal diameter of pipe fitting.
5. pneumatic rubber expanding arbor as claimed in claim 1 or 2, it is characterized in that: described top cover is duralumin lining, described catch is duralumin catch, and described pneumatic cylinder is the pneumatic cylinder of duralumin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410646814.2A CN104385187B (en) | 2014-11-16 | 2014-11-16 | Pneumatic rubber expanding arbor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410646814.2A CN104385187B (en) | 2014-11-16 | 2014-11-16 | Pneumatic rubber expanding arbor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104385187A true CN104385187A (en) | 2015-03-04 |
| CN104385187B CN104385187B (en) | 2018-10-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410646814.2A Active CN104385187B (en) | 2014-11-16 | 2014-11-16 | Pneumatic rubber expanding arbor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104385187B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108098638A (en) * | 2017-12-29 | 2018-06-01 | 苏州苏米欧贸易有限公司 | A kind of expansion fixing device |
| CN110174034A (en) * | 2019-02-24 | 2019-08-27 | 江苏扬碟钻石工具有限公司 | A kind of bearing race semi-finished product glitch detection tool |
| CN111015305A (en) * | 2019-11-14 | 2020-04-17 | 南京信息职业技术学院 | Spiral tube type hydraulic expansion shaft |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068372A (en) * | 1976-02-18 | 1978-01-17 | Hitachi, Ltd. | Tube expander |
| JPH08243815A (en) * | 1995-03-02 | 1996-09-24 | Ricoh Co Ltd | Bore chuck jig |
| CN2892317Y (en) * | 2006-04-11 | 2007-04-25 | 王宏 | In-pipeline expanding tool |
| CN201544044U (en) * | 2009-10-20 | 2010-08-11 | 张旭 | Novel inflatable elastic clamp |
| CN203778797U (en) * | 2014-02-23 | 2014-08-20 | 张鸿来 | Flexible self-centering clamp for thin-walled sleeve |
| CN204248716U (en) * | 2014-11-16 | 2015-04-08 | 重庆瑞普电缆有限公司 | Pneumatic rubber expanding arbor |
-
2014
- 2014-11-16 CN CN201410646814.2A patent/CN104385187B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068372A (en) * | 1976-02-18 | 1978-01-17 | Hitachi, Ltd. | Tube expander |
| JPH08243815A (en) * | 1995-03-02 | 1996-09-24 | Ricoh Co Ltd | Bore chuck jig |
| CN2892317Y (en) * | 2006-04-11 | 2007-04-25 | 王宏 | In-pipeline expanding tool |
| CN201544044U (en) * | 2009-10-20 | 2010-08-11 | 张旭 | Novel inflatable elastic clamp |
| CN203778797U (en) * | 2014-02-23 | 2014-08-20 | 张鸿来 | Flexible self-centering clamp for thin-walled sleeve |
| CN204248716U (en) * | 2014-11-16 | 2015-04-08 | 重庆瑞普电缆有限公司 | Pneumatic rubber expanding arbor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108098638A (en) * | 2017-12-29 | 2018-06-01 | 苏州苏米欧贸易有限公司 | A kind of expansion fixing device |
| CN110174034A (en) * | 2019-02-24 | 2019-08-27 | 江苏扬碟钻石工具有限公司 | A kind of bearing race semi-finished product glitch detection tool |
| CN111015305A (en) * | 2019-11-14 | 2020-04-17 | 南京信息职业技术学院 | Spiral tube type hydraulic expansion shaft |
| CN111015305B (en) * | 2019-11-14 | 2022-04-22 | 南京信息职业技术学院 | Spiral tube type hydraulic expansion shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104385187B (en) | 2018-10-19 |
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