CN108405684B - A kind of non-embedded plug of magnetism spherical crown surface and core rod connecting device - Google Patents
A kind of non-embedded plug of magnetism spherical crown surface and core rod connecting device Download PDFInfo
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- CN108405684B CN108405684B CN201810147530.7A CN201810147530A CN108405684B CN 108405684 B CN108405684 B CN 108405684B CN 201810147530 A CN201810147530 A CN 201810147530A CN 108405684 B CN108405684 B CN 108405684B
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- spherical crown
- crown surface
- mandrel
- ball
- rod connecting
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- 230000005389 magnetism Effects 0.000 title claims description 13
- 238000001179 sorption measurement Methods 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000003754 machining Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 12
- 238000005452 bending Methods 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length
- B21D9/03—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length and built-up from loose elements, e.g. series of balls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a kind of non-embedded core rod connecting devices of magnetic spherical crown surface, it include: the first connector, it is fixed on the mandrel end or core print of plug, the height for offering spherical crown backwards to the side of the mandrel is less than the first spherical crown surface groove of the radius of a ball, with the first magnet for making the first spherical crown surface groove have adsorption capacity；Second connector, is fixed on the core print of plug, and the height for offering spherical crown towards the side of the mandrel is less than the second spherical crown surface groove of the radius of a ball, with the second magnet for making the second spherical crown surface groove have adsorption capacity；Magnetizer ball, both ends are respectively embedded into the first spherical crown surface groove and the second spherical crown surface groove；The present invention is able to solve the problem of manufacture difficult processing present in traditional ball-and-socket type plug, assembly and disassembly hardly possible, make the core print and core print of plug, the non-embedded connection of the magnetic spherical crown surface of the connection type between core print and mandrel, it is simple and reliable and flexible, and the simple easy processing of structure, easy assembly and disassembly, also improves machining accuracy.
Description
Technical field
The present invention relates to thin-wall metal pipe bending forming technical fields, non-embedded more particularly, to a kind of magnetic spherical crown surface
Formula plug and core rod connecting device.
Background technique
As numerical controlled bending of pipe technology is widely used in the multiple fields such as air-conditioning, automobile, aviation, ship, bend pipe is sent out in industry
Occupy increasingly consequence in exhibition, therefore the quality of bend pipe and performance will directly affect the reasonable structure of industrial products,
Safety and reliability.
It will appear many defects in pipe fitting bending forming process, mainly have bending section material outside tension wall thickness reduction even
Drawing crack, the increase corrugation of inside compression wall thickness, the rebound and cross section fasciation of pipe fitting.The main function that thin-wall tube bends middle plug is
Prevent the excessive fasciation in bending section cross section, and the use of plug also can springback angle to pipe fitting, bending section outboard sidewalls thickness generate
It influences.The design and application of plug reasonably solve the subproblem occurred in bending forming, and the design of plug is to pipe fitting matter
Amount has a major impact.
Currently, the mandrel form being commonly used in the thin-wall pipe bending forming process for having core clod wash is ball-and-socket type core
Stick.Ball-and-socket type plug can be bent in many ways, adapt to various modifications, single, the multiple and complex bend suitable for thin-wall tube.But
It is being attached using multiple ball-joints between each core print and core print and mandrel of ball-and-socket type plug, ball-joint top is ball
Shape body protrusion, tail end are the spherical socket of indent, are that spherical surface is hinged between each ball-joint, the orbicule on one of ball-joint top is convex
It rises and is inlaid in the interior concave ball shape socket of another ball-joint tail end.The patent document that Authorization Notice No. is CN 200967072Y is public
A kind of core rod of cold bending has been opened, has been the plug in tubing cold bending process, the fixed block including plug, plug elbow and fixed core,
Fixed block is bolted in the cavity of plug, wherein the core bar elbow is made of core print and dnockout core, the core print
It is connect by dnockout core with fixed block, described dnockout core one end is bulb, and insertion fixed block bottom centre is arranged matching
In ball-and-socket, other end bottom centre is equipped with the ball-and-socket being embedded in for the bulb of another dnockout core.
But ball-and-socket type plug section shape and structure is complicated, and ball-joint tail end is the spherical socket of indent, processing difficulties are manufactured, and
Machining accuracy is difficult to ensure；In addition the connection between each ball-joint is inlaid in interior concave ball shape socket using orbicule protrusion
Mode, need to cut open ball-joint into dimidiation in assembling process, be then embedded in another ball-joint in the indent socket of its tail portion
Orbicule protrusion, assembly and disassembly are difficult；For ball-and-socket type plug, the junction between spherical convex body and sphere socket is one
Weak part, during core pulling after brake forming, since the frictional force between plug and pipe fitting is very big, ball bumps and
The junction of sphere socket will receive very big power, will lead to and is pulled off when serious.
Summary of the invention
The present invention provides a kind of non-embedded core rod connecting device of magnetic spherical crown surface, structure simply easily process by manufacture, easily
Assembly and disassembly can solve the problems, such as that the ball-and-socket type plug manufacture difficult processing of the prior art and assembly and disassembly are difficult.
A kind of non-embedded core rod connecting device of magnetism spherical crown surface, comprising:
First connector is fixed on the mandrel end or core print of plug, and the side backwards to the mandrel offers ball
The height of hat is less than the first spherical crown surface groove of the radius of a ball, with the first magnet for making the first spherical crown surface groove have adsorption capacity；
Second connector, is fixed on the core print of plug, and the height for offering spherical crown towards the side of the mandrel is less than ball
Second spherical crown surface groove of radius, with the second magnet for making the second spherical crown surface groove that there is adsorption capacity；
Magnetizer ball, both ends are respectively embedded into the first spherical crown surface groove and the second spherical crown surface groove.
Magnetizer ball (such as steel ball) is adsorbed on the first connection using magnet by core rod connecting device of the invention respectively
Body, the second connector spherical crown surface groove in so that the connection between the first connector, the second connector and magnetizer ball is
The magnetic non-embedded connection of spherical crown surface；
Spiral shell can be used between first connector of core rod connecting device of the invention, the second connector and core print, mandrel
Nail is connected and fixed or other fastening means, to constitute entire plug.
The simple easy processing of core rod connecting device structure of the invention, and it is easily assembled disassembly, improve machining accuracy.
In order to facilitate manufacturing and install, it is preferred that the side of the first connector towards the mandrel is provided with the first peace
Hole is filled, first mounting hole is provided with first magnet.
Preferably, first connector forms boss backwards to the side outwardly convex of the mandrel, opens on the boss
Equipped with the first spherical crown surface groove.The boss design of evagination can flexibly control the distance between two adjacent core prints, from
And may be implemented when pipe fitting bending process core head relatively rotates, it does not collide between adjacent core print, while also can
Enough preferable supporting roles for realizing core print to pipe fitting.
In order to facilitate manufacturing and install, it is preferred that second connector is provided with the second peace backwards to the side of the mandrel
Hole is filled, second mounting hole is provided with second magnet.
Preferably, the side of the second connector towards the mandrel offers the second spherical crown surface groove.Second
Both be connected and fixed in the cylindrical groove of the first side of connector embedded core and using screw, thus guaranteeing between adjacent core print
Under the precondition of suitable distance, so that the design of the first connector, manufacture are more flexible controllable.
Preferably, the height of the tall and big spherical crown in the second spherical crown surface groove of the spherical crown of the first spherical crown surface groove.First
The spherical crown of the first spherical crown surface groove at the evagination boss center of connector it is tall and big in the second connector towards the side of mandrel
The spherical crown of the second spherical crown surface groove at center is high, it is ensured that between the first connector, the second connector and magnetizer ball
The non-embedded connection of magnetic spherical crown surface is more reliable, is not easy to loosen, while being also adapted to the first connector and the second connector
Size design.
Preferably, the ratio between the height of the spherical crown of the first spherical crown surface groove and the radius of spherical crown are 0.6~0.8.This range
The ratio of the radius of the height and spherical crown of the spherical crown of the first interior spherical crown surface groove realizes between the first connector and magnetizer ball
Connection be the magnetic non-embedded connection of spherical crown surface, while can also guarantee the first connector and magnetic conduction in pipe fitting bending process
Magnetism connection between body ball is relatively firm reliable, is not easy to loosen.
Preferably, the ratio between the height of the spherical crown of the second spherical crown surface groove and the radius of spherical crown are 0.2~0.4.This range
The ratio of the radius of the height and spherical crown of the spherical crown of the second interior spherical crown surface groove realizes between the second connector and magnetizer ball
Connection be the magnetic non-embedded connection of spherical crown surface, while can also guarantee the size of the second connector it is small as far as possible from
And make the design of entire plug more flexible.
For the ease of manufacturing and installing, it is preferred that first magnet and the second magnet are permanent magnet.Magnet structure letter
It is single, long service life.Common permanent magnet uses magnet.Magnet shape can be cake magnet.
The present invention also provides a kind of non-embedded plugs of magnetic spherical crown surface, including sequentially connected mandrel and multiple cores
Head connects between the mandrel and core print and by above-mentioned core rod connecting device between adjacent core print.
Beneficial effects of the present invention:
The non-embedded core rod connecting device of magnetic spherical crown surface of the invention, is able to solve present in traditional ball-and-socket type plug
Manufacture difficult processing, the problem of assembly and disassembly hardly possible, make the core print and core print of plug, the connection type magnetic between core print and mandrel
The property non-embedded connection of spherical crown surface, it is simple and reliable and flexible, and the simple easy processing of structure, easy assembly and disassembly, also improve processing
Precision.
Detailed description of the invention
Fig. 1 is the perspective view of the explosion of the non-embedded core rod connecting device of magnetic spherical crown surface of the invention.
Fig. 2 is the structural schematic diagram of the non-embedded plug of magnetic spherical crown surface of the invention.
Fig. 3 is the diagrammatic cross-section of the first connector of the non-embedded core rod connecting device of magnetic spherical crown surface of the invention.
Fig. 4 is the diagrammatic cross-section of the second connector of the non-embedded core rod connecting device of magnetic spherical crown surface of the invention.
Specific embodiment
As shown in Figure 1, the non-embedded core rod connecting device of magnetic spherical crown surface of the present embodiment include the first cake magnet 1,
First connector 2, steel ball 3, the second connector 4 and the second cake magnet 5.
Wherein, the left-hand end column part of the first connector 2 is provided with circular hole, and hole is provided with the first cake magnet 1, and first connects
The right-hand end of junctor 2 is equipped with rotary table, and the height that spherical crown is provided at the center of rotary table top surface is less than the first spherical crown surface groove of the radius of a ball
201, steel ball 3 is attracted in the first spherical crown surface groove 201.
Second connector, 4 right-hand end is provided with circular hole, and hole is provided with the second cake magnet 5, and left end face is provided at center
The height of spherical crown is less than the second spherical crown surface groove 401 of the radius of a ball, and steel ball 3 is attracted in the second spherical crown surface groove 401.
Steel ball 3 is adsorbed on the first connector by the first cake magnet 1 and the second cake magnet 5 by the present embodiment respectively
2 and second connector 4 spherical crown surface groove in, form the magnetic between the first connector 2 and the second connector 4 and steel ball 3
The property non-embedded connection of spherical crown surface；Then it is connected by screw to the first connector 2 so that core rod connecting device of the present embodiment
And second be connected and fixed between connector 4 and mandrel 6 and core print 7, to constitute plug, as shown in Figure 2.
As shown in figure 3, being provided with circular hole in the left-hand end column part of the first connector 2, circular hole is for filling the first cake magnetic
Iron 1, the height for being provided with spherical crown on right-hand end rotary table at end face center is less than the first spherical crown surface groove 201 of the radius of a ball, for installing
Steel ball 3 forms the non-embedded connection of magnetic spherical crown surface between steel ball 3 and the first connector 2.First spherical crown surface groove
The ratio between the height of 201 spherical crown and the radius of spherical crown are 0.8.
As shown in figure 4,4 right-hand end of the second connector is provided with circular hole, circular hole is for filling the second cake magnet 5, left end face
The height that spherical crown is provided at center forms steel ball 3 for installing steel ball 3 less than the second spherical crown surface groove 401 of the radius of a ball
The non-embedded connection of magnetic spherical crown surface between the second connector 4.The height of the spherical crown of second spherical crown surface groove 401 and spherical crown
The ratio between radius is 0.4.
In conclusion the non-embedded plug of magnetic spherical crown surface and its attachment device of the present embodiment, are able to solve traditional
The problem of manufacture difficult processing present in ball-and-socket type plug, assembly and disassembly hardly possible；By in the first connector and the second connector
Cake magnet steel ball is adsorbed on respectively in respective spherical crown surface groove so that the first connector, the second connector
The non-embedded connection of magnetic spherical crown surface is formd between steel ball, and core print, mandrel and the plug are connected further through screw connection
The first connector, the second connector of connection device are connected and fixed integrally, to constitute plug；The core print and core print, core of plug
Connection type between head and mandrel is the non-embedded connection of magnetic spherical crown surface, simple and reliable and flexible；Magnetic spherical crown surface is non-embedding
Enter the simple easy processing of formula core rod connecting device structure, and easy assembly and disassembly, improves machining accuracy.
Claims (10)
1. a kind of non-embedded core rod connecting device of magnetism spherical crown surface characterized by comprising
First connector is fixed on the mandrel end or core print of plug, and the side backwards to the mandrel offers spherical crown
Height is less than the first spherical crown surface groove of the radius of a ball, with the first magnet for making the first spherical crown surface groove have adsorption capacity；
Second connector, is fixed on the core print of plug, and the height for offering spherical crown towards the side of the mandrel is less than the radius of a ball
The second spherical crown surface groove, with make the second spherical crown surface groove have adsorption capacity the second magnet；
Magnetizer ball, both ends are respectively embedded into the first spherical crown surface groove and the second spherical crown surface groove.
2. the non-embedded core rod connecting device of magnetism spherical crown surface as described in claim 1, which is characterized in that first connection
The side of body towards the mandrel is provided with the first mounting hole, and first mounting hole is provided with first magnet.
3. the non-embedded core rod connecting device of magnetism spherical crown surface as claimed in claim 2, which is characterized in that first connection
Body forms boss backwards to the side outwardly convex of the mandrel, offers the first spherical crown surface groove on the boss.
4. the non-embedded core rod connecting device of magnetism spherical crown surface as claimed in claim 3, which is characterized in that second connection
Body is provided with the second mounting hole backwards to the side of the mandrel, and second mounting hole is provided with second magnet.
5. the non-embedded core rod connecting device of magnetic spherical crown surface as described in claim 3 or 4, which is characterized in that described second
The side of connector towards the mandrel offers the second spherical crown surface groove.
6. the non-embedded core rod connecting device of magnetism spherical crown surface as claimed in claim 5, which is characterized in that first spherical crown
The height of the tall and big spherical crown in the second spherical crown surface groove of the spherical crown of face groove.
7. the non-embedded core rod connecting device of magnetism spherical crown surface as claimed in claim 6, which is characterized in that first spherical crown
The ratio between the height of the spherical crown of face groove and the radius of spherical crown are 0.6~0.8.
8. the non-embedded core rod connecting device of magnetism spherical crown surface as claimed in claim 6, which is characterized in that second spherical crown
The ratio between the height of the spherical crown of face groove and the radius of spherical crown are 0.2~0.4.
9. the non-embedded core rod connecting device of magnetism spherical crown surface as described in claim 1, which is characterized in that first magnet
It is permanent magnet with the second magnet.
10. a kind of non-embedded plug of magnetism spherical crown surface, including sequentially connected mandrel and multiple core prints, which is characterized in that institute
It states between mandrel and core print and is connected by the plug as described in claim 1~9 any claim between adjacent core print
Device connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810147530.7A CN108405684B (en) | 2018-02-12 | 2018-02-12 | A kind of non-embedded plug of magnetism spherical crown surface and core rod connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810147530.7A CN108405684B (en) | 2018-02-12 | 2018-02-12 | A kind of non-embedded plug of magnetism spherical crown surface and core rod connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108405684A CN108405684A (en) | 2018-08-17 |
| CN108405684B true CN108405684B (en) | 2019-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810147530.7A Active CN108405684B (en) | 2018-02-12 | 2018-02-12 | A kind of non-embedded plug of magnetism spherical crown surface and core rod connecting device |
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| Country | Link |
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| CN (1) | CN108405684B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109382429A (en) * | 2018-11-05 | 2019-02-26 | 凌云工业股份有限公司汽车零部件研发分公司 | A kind of fuse of body of a motor car A column three-dimensional bending molding |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB735220A (en) * | 1953-07-14 | 1955-08-17 | Frank Charles Tomlins | Improvements in or relating to mandrels for use in bending hollow tubular articles, such as electromagnetic wave guides |
| CN101367099B (en) * | 2007-08-14 | 2010-05-19 | 西北工业大学 | Flexible bend pipe core mould |
| CN101758126A (en) * | 2009-12-24 | 2010-06-30 | 成都飞机工业（集团）有限责任公司 | Numeric control bending core mould of thin-wall tube with large diameter |
| CN202239121U (en) * | 2011-07-22 | 2012-05-30 | 长春佛吉亚排气系统有限公司 | Three-head spindle for producing thin-wall bent pipe |
| CN102513422A (en) * | 2012-01-12 | 2012-06-27 | 长治市泽洋锻压机械有限公司 | Central spindle of pipe bender |
| CN105215112A (en) * | 2015-10-16 | 2016-01-06 | 哈尔滨飞机工业集团有限责任公司 | A kind of ball-and-socket joint plug with interchangeability |
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2018
- 2018-02-12 CN CN201810147530.7A patent/CN108405684B/en active Active
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