CN104385187B - Pneumatic rubber expanding arbor - Google Patents
Pneumatic rubber expanding arbor Download PDFInfo
- Publication number
- CN104385187B CN104385187B CN201410646814.2A CN201410646814A CN104385187B CN 104385187 B CN104385187 B CN 104385187B CN 201410646814 A CN201410646814 A CN 201410646814A CN 104385187 B CN104385187 B CN 104385187B
- Authority
- CN
- China
- Prior art keywords
- rubber sleeve
- mandrel
- pneumatic
- pipe fitting
- top cover
- 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.)
- Active
Links
- 210000002320 Radius Anatomy 0.000 claims abstract description 4
- 229910000737 Duralumin Inorganic materials 0.000 claims description 10
- 230000037250 Clearance Effects 0.000 claims description 3
- 230000035512 clearance Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 5
- 210000001847 Jaw Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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
Abstract
The invention discloses a kind of pneumatic rubber expanding arbor, including mandrel and top cover, the mandrel is equipped with the shaft shoulder；It is equipped with the first stepped hole in the top cover, first stepped hole includes a large diameter hole and the equal diameter holes of two radiuses, and two diameter holes coordinate with mandrel；It is arranged with the first rubber sleeve and the second rubber sleeve respectively at the both sides of top cover on mandrel, first rubber sleeve is close to the shaft shoulder, the second rubber sleeve far from the shaft shoulder, it is additionally provided with catch between first rubber sleeve and the shaft shoulder, the outside of second rubber sleeve is additionally provided with pneumatic cylinder, it is additionally provided with pneumatic operated valve in pneumatic cylinder, the inner wall of the pneumatic operated valve and pneumatic cylinder offsets, and the outside of pneumatic operated valve is equipped with push rod.The present invention overcomes that the support of pipe fitting positioning cannot be accurately positioned with pipe fitting center at present or to the higher technological deficiency of pipe fitting inner wall roughness requirements, a kind of can be accurately positioned with pipe fitting center and the pneumatic rubber expanding arbor not high to pipe fitting inner wall roughness requirements is provided.
Description
Technical field
The invention belongs to the support positioning fields of pipe fitting, and in particular to a kind of pneumatic rubber expanding arbor.
Background technology
Currently, when being processed to pipe fitting, the end of pipe fitting is typically clamped using clamping jaw, then the rotation for passing through clamping jaw
Transfer the rotation for driving pipe fitting, to being processed to the outer wall of pipe fitting, but due to clamping jaw when clamping pipe fitting not with pipe fitting
Endoporus center pipe fitting is positioned, therefore, when being finished to pipe fitting, can not ensure the machining accuracy of pipe fitting；And
At present in practical operation, also someone positions pipe fitting with mandrel, i.e., pipe fitting is placed on mandrel, then the rotation for passing through mandrel
Turn the rotation of drive pipe fitting, to being processed to pipe fitting, but when being positioned using such mode, in order to ensure that mandrel can be with pipe fitting
Pipe fitting is accurately positioned in endoporus center, and mandrel necessarily is in the center of pipe fitting, to the roughness to pipe fitting inner wall
It is more demanding, and since mandrel and pipe fitting are hard material, mandrel can inevitably have gap when coordinating with pipe fitting, to
It is easy to skid with pipe fitting when mandrel rotates, and then pipe fitting cannot accurately be processed.
Invention content
The technical problem to be solved by the present invention is at present cannot be accurately fixed with pipe fitting center to the support of pipe fitting positioning
Position or to the higher technological deficiency of pipe fitting inner wall roughness requirements, provide a kind of can be accurately positioned and in pipe fitting with pipe fitting center
The not high pneumatic rubber expanding arbor of wall roughness requirements.
In order to solve the above technical problem, the present invention provides following technical solutions：Pneumatic rubber expanding arbor, including mandrel
And top cover, the mandrel are equipped with the shaft shoulder；The first stepped hole is equipped in the top cover, first stepped hole includes a major diameter
Hole and the equal diameter holes of two radiuses, the large diameter hole are located between two diameter holes, and top cover is sheathed on mandrel and two
Diameter holes coordinate with mandrel；On mandrel the first rubber sleeve and the second rubber sleeve are respectively equipped at the both sides of top cover, described the
One rubber sleeve, far from the shaft shoulder, catch, and catch is additionally provided between first rubber sleeve and the shaft shoulder close to the shaft shoulder, the second rubber sleeve
It offsets between the shaft shoulder, between catch and the first rubber sleeve, the outside of second rubber sleeve is additionally provided with pneumatic cylinder, mandrel
In the pneumatic cylinder in end position of second rubber sleeve one end, pneumatic operated valve, the pneumatic operated valve and pneumatic cylinder are additionally provided in pneumatic cylinder
Inner wall offsets, and the outside of pneumatic operated valve is equipped with push rod.
Using the pneumatic rubber expanding arbor of technical solution of the present invention, including mandrel, mandrel is used to support rubber sleeve, top cover
And catch, to support tubes, the shaft shoulder on mandrel is used to support catch, avoids keeping off the outer Slideslip to mandrel；Top cover is used for
Compress the first rubber sleeve and support the second rubber sleeve, to squeeze the first rubber sleeve and the second rubber sleeve, make the first rubber sleeve and
Second rubber sleeve is deformed, and the first stepped hole is equipped in top cover, and the first stepped hole includes a large diameter hole and two diameter holes,
The large diameter hole of first stepped hole is located at the centre of two diameter holes, and two diameter holes of the first stepped hole coordinate with mandrel, from
And a cavity is formed between large diameter hole and mandrel, save the material of manufacture top cover；First rubber sleeve and the second rubber sleeve are
Elastic material, the first rubber sleeve and the second rubber sleeve will produce deformation when being squeezed, and to push against pipe fitting, catch is for supporting
The first rubber sleeve is kept off, to coordinate top cover to squeeze the first rubber sleeve together so that the first rubber sleeve deforms and then pushes against pipe fitting；
Pneumatic cylinder is connect with the second rubber sleeve, and the second rubber sleeve is squeezed after being pressurized to the gas in pneumatic cylinder, the second rubber sleeve is made to become
Shape pushes against pipe fitting, and pneumatic operated valve can slide in pneumatic cylinder, to squeeze the gas in pneumatic cylinder and then increase in pneumatic cylinder
Air pressure, push rod is for pushing pneumatic operated valve.
The present invention technical principle and technique effect be：Inwardly push push rod so that pneumatic operated valve slid inward, due to pneumatic
Valve offsets with pneumatic cylinder inner wall, i.e., pneumatic operated valve, pneumatic cylinder and the second rubber sleeve form a closed cavity, with pneumatic operated valve to
The volume of interior movement, the cavity reduces, and to which the air pressure in cavity increases, and then squeezes the second rubber sleeve of elasticity, by
In the transmission of power, top cover also gives the first rubber sleeve one extruding force, and since catch is fixed on mandrel, to which catch will
Hinder the movement of the first rubber sleeve and the second rubber sleeve, therefore under the collective effect of catch and pneumatic cylinder, the first rubber sleeve and
Second rubber sleeve is deformed, to clog the gap between mandrel and pipe fitting, push against pipe fitting.Due to implementation process core axle position
In the center of pipe fitting, mandrel connection can be positioned, i.e. in pipe fitting on lathe to of the invention with the position of mandrel
The heart positions pipe fitting, therefore can accurately be processed to pipe fitting；Since the first rubber sleeve and the second rubber sleeve are squeezed
Can be clogged after deformation the gap between pipe fitting and mandrel, can clog pipe fitting inner wall caused by excessively coarse it is concave-convex not
Flat pitting avoids pipe fitting and skids with mandrel, and avoid caused by pipe fitting inner wall is excessively coarse to push against pipe fitting
Positioning is inaccurate, low to the roughness requirements of pipe fitting inner wall.
Further, it is equipped with the second stepped hole in the pneumatic cylinder, second stepped hole includes macropore and aperture, described big
Hole is connect with the second rubber sleeve, and the pneumatic operated valve is set in aperture.Since the gas in same cavity is to the pressure of chamber outer wall
It is equal in magnitude, therefore the pressure size of the second clamping sleeve of gas pair in pneumatic cylinder is equal with the pressure size to pneumatic operated valve, and
Power is equal to the product of pressure and area, therefore pneumatic operated valve is located in aperture and can ensure that gas pair the second rubber sleeve pressure is constant
In the case of reduce push push rod thrust.
Further, the diameter holes and mandrel clearance fit.To which top cover can be slided on mandrel.
Further, the outer diameter of first rubber sleeve is bigger 1mm than the internal diameter of pipe fitting, and the outer diameter of second rubber sleeve finishes pipe
The big 1mm of internal diameter of part.The surplus of 1mm can make the first rubber sleeve and the second rubber sleeve be easier to push against pipe fitting.
Further, the top cover is duralumin bushing, and the catch is duralumin catch, and the pneumatic cylinder is the pneumatic cylinder of duralumin.
Duralumin good mechanical property, intensity is big, and density is small, and to which top cover can preferably squeeze the first rubber sleeve with catch, top cover is gentle
Dynamic valve can preferably squeeze the second rubber sleeve, and lighter in installing and dismounting.
Description of the drawings
Technical solution of the present invention is further illustrated below in conjunction with the accompanying drawings：
Fig. 1 is the schematic diagram of pneumatic rubber expanding arbor of the present invention；
Fig. 2 is the schematic diagram of top cover.
Specific implementation mode
Wherein：Mandrel 1, pipe fitting 2, the shaft shoulder 3, catch 4, the first rubber sleeve 5, top cover 6, the second rubber sleeve 7, pneumatic cylinder 8, gas
Dynamic valve 9, push rod 10, handle 11, macropore 12, aperture 13, large diameter hole 14, diameter holes 15.
As shown in Figure 1, pneumatic rubber expanding arbor 1 of the present invention, including mandrel 1 and top cover 6, the mandrel 1 are equipped with axis
Shoulder 3；The top cover 6 is duralumin material, and the outer diameter of top cover 6 is less than the internal diameter of pipe fitting 2, and the first stepped hole is equipped in top cover 6, described
First stepped hole includes a large diameter hole 14 and the equal diameter holes 15 of two radiuses, and the large diameter hole 14 is located at two diameter holes
Between 15, as shown in Fig. 2, top cover 6 is sheathed on mandrel 1 and two diameter holes 15 and 1 clearance fit of mandrel；It is located on mandrel 1
The first rubber sleeve 5 and the second rubber sleeve 7 are arranged at the both sides of top cover 6 respectively, first rubber sleeve 5 is close to the shaft shoulder 3, second
Rubber sleeve 7 is fitted close with mandrel 1 far from the shaft shoulder 3, the first rubber sleeve 5 and the second rubber sleeve 7, the first rubber sleeve 5 and second
The outer diameter of rubber sleeve 7 is bigger 1mm than the internal diameter of pipe fitting 2, and duralumin catch 4 is additionally provided between first rubber sleeve 5 and the shaft shoulder 3,
And offset between catch 4 and the shaft shoulder 3, between catch 4 and the first rubber sleeve 5, the outside of second rubber sleeve 7 is additionally provided with
Pneumatic cylinder 8, pneumatic cylinder 8 are duralumin material, are equipped with the second stepped hole in pneumatic cylinder 8, the second stepped hole includes macropore 12 and aperture
13, macropore 12 is connect with the second rubber sleeve 7, and pneumatic operated valve 9 is equipped in aperture 13, and the second rubber sleeve 7, pneumatic cylinder 8 and pneumatic operated valve 9 are total
With a closed cavity is formed, the outside of pneumatic operated valve 9 is equipped with push rod 10, and push rod 10 is equipped with handle 11.
In specific implementation process, driving handle 11 pushes push rod 10, makes 9 slid inward of pneumatic operated valve, squeezes pneumatic cylinder
Gas in 8 so that the air pressure in pneumatic cylinder 8 increases, and then squeezes the second rubber sleeve 7, due to the transfer principle of power, the
One rubber sleeve 5 is also by an extruding force so that and the first rubber sleeve 5 and the second rubber sleeve 7 are deformed, thus outwardly convex,
Pipe fitting 2 is squeezed, i.e., is pushed against pipe fitting 2, positioning, pipe fitting 2 can be finished by being then turned on the motor being connect with mandrel 1.
For those skilled in the art, without departing from the structure of the invention, several changes can also be made
Shape and improvement, these should also be considered as protection scope of the present invention, these all do not interfere with the effect and patent that the present invention is implemented
Practicability.
Claims (3)
1. pneumatic rubber expanding arbor, it is characterised in that：Including mandrel and top cover, the mandrel is equipped with the shaft shoulder；The top cover
Inside it is equipped with the first stepped hole, first stepped hole includes a large diameter hole and the equal diameter holes of two radiuses, the major diameter
Hole is located between two diameter holes, and top cover is sheathed on mandrel and two diameter holes coordinate with mandrel；Positioned at top cover on mandrel
The first rubber sleeve and the second rubber sleeve are arranged at both sides respectively, first rubber sleeve is separate close to the shaft shoulder, the second rubber sleeve
The shaft shoulder is additionally provided with catch between first rubber sleeve and the shaft shoulder, and between catch and the shaft shoulder, between catch and the first rubber sleeve
It offsets, the outside of second rubber sleeve is additionally provided with pneumatic cylinder, and mandrel is located at gas close to the end of second rubber sleeve one end
In dynamic cylinder, pneumatic operated valve is additionally provided in pneumatic cylinder, the inner wall of the pneumatic operated valve and pneumatic cylinder offsets, and the outside of pneumatic operated valve, which is equipped with, to push away
Bar；It is equipped with the second stepped hole in the pneumatic cylinder, second stepped hole includes macropore and aperture, the macropore and the second rubber
Set connection, the pneumatic operated valve are set in aperture；The outer diameter of first rubber sleeve and the second rubber sleeve is bigger 1mm than the internal diameter of pipe fitting；
Mandrel is equipped with motor.
2. pneumatic rubber expanding arbor as described in claim 1, it is characterised in that：The diameter holes and mandrel clearance fit.
3. pneumatic rubber expanding arbor as described in claim 1, it is characterised in that：The top cover is duralumin bushing, the gear
Piece is duralumin catch, and the 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 CN104385187A (en) | 2015-03-04 |
| CN104385187B true CN104385187B (en) | 2018-10-19 |
Family
ID=52603193
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) |
Families Citing this family (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 |
| CN110174034B (en) * | 2019-02-24 | 2021-03-23 | 江苏扬碟钻石工具有限公司 | Bearing ring semi-manufactured goods detection instrument that beats |
| CN111015305B (en) * | 2019-11-14 | 2022-04-22 | 南京信息职业技术学院 | Spiral tube type hydraulic expansion shaft |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068372A (en) * | 1976-02-18 | 1978-01-17 | Hitachi, Ltd. | Tube expander |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08243815A (en) * | 1995-03-02 | 1996-09-24 | Ricoh Co Ltd | Bore chuck jig |
-
2014
- 2014-11-16 CN CN201410646814.2A patent/CN104385187B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068372A (en) * | 1976-02-18 | 1978-01-17 | Hitachi, Ltd. | Tube expander |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104385187A (en) | 2015-03-04 |
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