CN104385187B - Pneumatic rubber expanding arbor - Google Patents

Pneumatic rubber expanding arbor Download PDF

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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
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CN
China
Prior art keywords
rubber sleeve
mandrel
pneumatic
pipe fitting
top cover
Prior art date
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Active
Application number
CN201410646814.2A
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Chinese (zh)
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CN104385187A (en
Inventor
王云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHONGQING RUIPU CABLE Co Ltd
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CHONGQING RUIPU CABLE Co Ltd
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Priority to CN201410646814.2A priority Critical patent/CN104385187B/en
Publication of CN104385187A publication Critical patent/CN104385187A/en
Application granted granted Critical
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B31/00Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/40Expansion mandrels
    • B23B31/404Gripping the work or tool by jaws moving radially controlled by conical surfaces
    • B23B31/4053Gripping 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

Pneumatic rubber expanding arbor
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.
CN201410646814.2A 2014-11-16 2014-11-16 Pneumatic rubber expanding arbor Active CN104385187B (en)

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CN201410646814.2A CN104385187B (en) 2014-11-16 2014-11-16 Pneumatic rubber expanding arbor

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CN104385187A CN104385187A (en) 2015-03-04
CN104385187B true CN104385187B (en) 2018-10-19

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08243815A (en) * 1995-03-02 1996-09-24 Ricoh Co Ltd Bore chuck jig

Patent Citations (5)

* Cited by examiner, † Cited by third party
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

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