CN108480434B - A kind of lateral thruster of electromagnetic type pipe fitting bending forming - Google Patents
A kind of lateral thruster of electromagnetic type pipe fitting bending forming Download PDFInfo
- Publication number
- CN108480434B CN108480434B CN201810178846.2A CN201810178846A CN108480434B CN 108480434 B CN108480434 B CN 108480434B CN 201810178846 A CN201810178846 A CN 201810178846A CN 108480434 B CN108480434 B CN 108480434B
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- China
- Prior art keywords
- briquetting
- pipe fitting
- electromagnetism
- electromagnet
- pushing block
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Classifications
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- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/12—Bending rods, profiles, or tubes with programme control
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electromagnets (AREA)
Abstract
The invention discloses a kind of lateral thrusters of electromagnetic type pipe fitting bending forming.Side pushing block bottom surface is concave arc cylinder, and side pushing block bottom surface contacts pipe fitting, and concave arc cylinder is provided with several bar shaped grooves of circumferentially spaced arrangement, and the notch of each bar shaped groove attaches sheet rubber；Equipped with along the circumferentially-spaced several electromagnetism briquetting units arranged in parallel of concave arc cylinder inside the pushing block of side, each electromagnetism briquetting unit is parallel to bar shaped groove arrangement and is mounted on inside the pushing block of side；Each electromagnetism briquetting unit is mainly to concatenate in a row and after electromagnet concatenation both ends through briquetting by several electromagnets to constitute through briquetting connection magnetic substance, and coil is wound on electromagnet.The present invention can change the stress distribution of bending section in pipe fitting bending forming process, so as to alleviate pipe fitting distortion of cross section, reduce the thinned degree of wall thickness on the outside of pipe fitting, and controllability is strong, and flexibility ratio is high.
Description
Technical field
The present invention relates to thin-wall metal pipe bending forming technical fields, bend to more particularly, to a kind of electromagnetic type pipe fitting
Shape lateral thruster.
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 of pipe fitting and distortion of cross section.
Material tension stress when pipe fitting is bent on the outside of bending section neutral line acts on, the material compression chord on the inside of neutral line
Effect, and be located at bending deformation area outermost and innermost material suffered by tangential stress be maximum.By stress-strain analysis
It is found that the material on the outside of neutral line is by tangential stress, so that material outside wall thickness reduction；Material on the inside of neutral line by
Circumferential compressive force, so that inside material wall thickness thickens.At the same time, in bending deformation process, suffered by neutral line material outside
The resultant force of tangential stress be directed toward flexural center, the resultant force of circumferential compressive force suffered by neutral line inside material is along flexural center
Outside being directed toward, so that the pipe fitting material outside in free state has the trend mobile to flexural center direction, it is in free shape
The arranged at inner side of pipe fitting material of state has the trend mobile far from flexural center direction, makes to move in pipe fitting neutral line, pipe fitting cross section hair
Raw distortion.
One of the important mold that side pushing block is shaped as thin-walled tube NC bending influences bend pipe wall thickness significant.Pipe fitting is curved
In bent forming process, there are two the effects of side pushing block: first is that pipe fitting rear end is pressed on wrinkle resistant piece, to prevent pipe fitting from wrinkling
Defect；Second is that side pushing block itself can be set match with rate of bending and with the consistent movement velocity of pipe fitting moving direction, lean on
Friction between pipe fitting outer wall applies a forward thrust to pipe fitting.Therefore, it can be surveyed between pushing block and pipe fitting by changing
Friction, briquetting movement velocity change stress distribution when Tube Bending Deformation, so as to alleviating pipe fitting bending forming process
Middle distortion of cross section reduces outside wall thickness reduction degree.
Summary of the invention
In order to solve the problems, such as background technique, the purpose of the present invention is design a kind of electromagnetic type pipe fitting to bend to
Shape lateral thruster, the stress distribution in pipe fitting bending forming process can be changed in this lateral thruster, to alleviate the cross section of pipe fitting
Distortion reduces wall thickness reduction degree on the outside of pipe fitting.
The technical solution adopted by the present invention is that:
The present invention includes side pushing block, electromagnetism briquetting unit and sheet rubber；Side pushing block bottom surface is concave arc cylinder, side pushing block
Bottom surface contacts pipe fitting, and concave arc cylinder is provided with several bar shaped grooves of circumferentially spaced arrangement, the notch of each bar shaped groove
Attach sheet rubber；It is equipped with along the circumferentially-spaced several electromagnetism briquetting units arranged in parallel of concave arc cylinder, respectively inside the pushing block of side
A electromagnetism briquetting unit is parallel to bar shaped groove arrangement and is mounted on inside the pushing block of side；If each electromagnetism briquetting unit be mainly by
Dry electromagnet concatenates in a row and after electromagnet concatenation both ends through briquetting and constitutes, electromagnet through briquetting connection magnetic substance
On be wound with coil.
The briquetting of the electromagnetism briquetting unit extend into bar shaped groove and contacts with sheet rubber, after coil is powered, electricity
It attracts each other between magnetic substance and electromagnet in magnetic pressure module unit and between adjacent electromagnet, squeezes the downward micro-displacement of briquetting
Sheet rubber is generated by pressure to apply pressure to tube surface via sheet rubber and is applied to the axial along pipe fitting of tube surface
Frictional force.
Institute's coiling is connected in series on each electromagnet in same electromagnetism briquetting unit, in different electromagnetism briquetting units
Institute's coiling is connected in parallel on electromagnet.
In the electromagnetism briquetting unit, the both ends of electromagnet are round estrade structure, and interlude is cylindrical structure, cylinder
Body structure both ends are coaxially fixed between the big end of round estrade structure at both ends, and coil, both ends are wound on interlude cylindrical body
Round estrade structural base circular conical surface on be provided with rectangular channel for installing briquetting；Magnetic substance is round estrade structure, electromagnetism
The rectangular channel for installing briquetting, the groove bottom of rectangular channel are provided on the circular conical surface of the round estrade structural base of body and magnetic substance
The bus of circular conical surface where being parallel to rectangular groove；Briquetting is inlaid in the rectangular channel splicing of two neighboring electromagnet round estrade structure
In the vallecular cavity that the rectangular channel of the respective round estrade structure of the vallecular cavity and electromagnet and magnetic substance of formation is spliced to form, briquetting two sides
Equipped with the corner cut that the groove bottom with rectangular channel matches, so that between two neighboring electromagnet both ends and electromagnet and magnetic substance
Between concatenate.
The briquetting lower surface is spherical surface.
The both ends of the electromagnetism briquetting unit are magnetic substance, and centre is several electromagnets.
The side pushing block is provided with along the circumferentially spaced multiple cylindrical channels of concave arc cylinder, electromagnetism briquetting unit
It is installed in cylindrical channel, cylindrical channel is communicated with bar shaped groove.
The both ends of the side pushing block are equipped with side end cap, and side end cap is fixedly mounted on both ends and the gear of side pushing block by screw
It is placed on the cylindrical channel of installation electromagnetism briquetting unit.
The coil electrical current of different same electromagnetism briquetting units is different, can be realized same electromagnetism briquetting list when energization
It is identical that member squeezes the pressure size that briquetting applies tube surface, and different electromagnetism briquetting units squeeze briquetting and apply to tube surface
The pressure size that adds is different, thus along the circumferential direction installed in the pushing block of side multiple rows of electromagnetism briquetting cell operation when to tube surface
The pressure of application is axially identical along pipe fitting, and is circumferentially different along pipe fitting.The frictional force as caused by pressure makes pipe
Part along the circumferential direction by different size of stress, changes stress distribution of the pipe fitting in bending forming process, thus release pipe
Part reduces the degree of pipe fitting material outside wall thickness reduction in the distortion of cross section of bending forming process.
The beneficial effects of the present invention are:
The present invention can change the stress distribution of bending section in pipe fitting bending forming process, transversal so as to alleviate pipe fitting
Area distortion reduces the thinned degree of wall thickness on the outside of pipe fitting.
The present invention can control the frictional force of generation, so that pipe fitting is along the circumferential direction by different size of stress, to change
The stress distribution of bending section in pipe fitting bending process.
Electromagnetic type pipe fitting bending lateral thruster of the invention to adjust the size of electric current and flexible modulation lateral thruster applies
In the pressure of tube surface, controllability is strong, and flexibility ratio is high.
Detailed description of the invention
Fig. 1 is the schematic diagram of apparatus of the present invention；
Fig. 2 is the schematic diagram of the electromagnetism briquetting unit of apparatus of the present invention；
Fig. 3 is the schematic diagram of the electromagnet of the wound around coil of apparatus of the present invention；
Fig. 4 is the top view of the electromagnet of the wound around coil of apparatus of the present invention；
Fig. 5 is the side pushing block schematic diagram of apparatus of the present invention；
Fig. 6 is the side pushing block left view of apparatus of the present invention.
In figure, side pushing block 1, magnetic substance 2, electromagnet 3, coil 4, briquetting 5, sheet rubber 6, side end cap 7.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, present invention specific implementation includes side pushing block 1, electromagnetism briquetting unit and sheet rubber 6；1 bottom surface of side pushing block
For concave arc cylinder, pushing block 1 bottom surface in side contacts pipe fitting, and several bar shapeds that concave arc cylinder is provided with circumferentially spaced arrangement are logical
The notch of slot, each bar shaped groove attaches sheet rubber 6, and sheet rubber 6 is placed between the slot two sides of bar shaped groove, and sheet rubber 6 covers
The firmly notch of bar shaped groove, equipped with along the circumferentially-spaced several electromagnetism briquettings arranged in parallel of concave arc cylinder inside side pushing block 1
Unit.
As shown in Figure 1 and Figure 4, each electromagnetism briquetting unit corresponds to each bar shaped groove, and electromagnetism briquetting unit is mounted on
In the cylindrical channel opened up inside side pushing block 1, side pushing block 1 is provided with logical along the circumferentially spaced multiple cylinders of concave arc cylinder
Road, as shown in Figure 5 and Figure 6, electromagnetism briquetting unit are installed in cylindrical channel, and a cylindrical channel installs an electromagnetism briquetting list
Member, cylindrical channel are communicated with bar shaped groove.
As shown in Fig. 2, the present invention is concatenated into an electromagnetism briquetting unit by magnetic substance 2, electromagnet 3, coil 4, briquetting 5,
Each electromagnetism briquetting unit is mainly to concatenate both ends in a row and after the concatenation of electromagnet 3 through briquetting 5 by several electromagnets 3
Magnetic substance 2 is connected through briquetting 5 and is constituted, and the both ends of electromagnetism briquetting unit are magnetic substance 2, and centre is several electromagnets 3, are such as schemed
Shown in 3 and Fig. 4, coil 4 is wound on electromagnet 3.
Institute's coiling 4 is connected in series on each electromagnet 3 in same electromagnetism briquetting unit, in different electromagnetism briquetting units
Electromagnet 3 on institute's coiling 4 be connected in parallel, 4 parameter of coil on the electromagnet 3 of all electromagnetism briquetting units is identical.
As shown in Fig. 2, the both ends of electromagnet 3 are round estrade structure in electromagnetism briquetting unit, interlude is cylindrical body knot
Structure, cylindrical structure both ends are coaxially fixed between the big end of round estrade structure at both ends, and the outside diameter of round estrade structure is big
In being wound with coil 4 on the diameter of cylindrical structure, interlude cylindrical body, on the circular conical surface of the round estrade structural base at both ends
It is provided with the rectangular channel for installing briquetting 5, the groove bottom of rectangular channel is parallel to rectangle groove center place in the bus of circular conical surface；Magnetic
Property body 2 be round estrade structure, be provided on the circular conical surface of the round estrade structural base of electromagnet 3 and magnetic substance 2 for installing pressure
The rectangular channel of block 5, as shown in figure 3, electromagnet 3 is identical with the rectangular channel size of magnetic substance 2；Briquetting 5 is inlaid in two neighboring electricity
The square of vallecular cavity and electromagnet 3 and the respective round estrade structure of magnetic substance 2 that the rectangular channel of 3 round estrade structure of magnet is spliced to form
In the vallecular cavity that shape slot is spliced to form, so that concatenated between 3 both ends of two neighboring electromagnet and between electromagnet 3 and magnetic substance 2,
And the briquetting 5 of electromagnetism briquetting unit extend into bar shaped groove and contacts with sheet rubber 6, and briquetting two sides are equipped with and rectangular channel
The corner cut that groove bottom matches, 5 lower surface of briquetting are spherical surface.Specifically, briquetting 5 is embedded in the rotary table of magnetic substance 2 and electromagnet 3
Both connections in the rectangular recess of body structure, briquetting 5, which is embedded in the rectangular recess of the round estrade structure of two neighboring electromagnet 3, to be connected
It both connects, i.e. the rectangular recess and latter 3 head round estrade of electromagnet that are embedded in previous 3 tail portion round estrade structure of electromagnet of briquetting 5
In the rectangular recess of structure.
The both ends of side pushing block 1 are equipped with side end cap 7, in specific implementation, screw hole are provided on side end cap 7, by side end cap 7
The screw hole of corresponding position is using screw connecting side pushing block 1 and side end cap 7 on screw hole and side pushing block 1, to realize the lateral thruster
It is closed at both ends, side end cap 7 will not be removed from cylindrical channel for axial limiting Motionless electromagnetic briquetting unit.
The course of work of the present invention is:
After coil 4 is powered, phase between the magnetic substance 2 and electromagnet 3 in electromagnetism briquetting unit and between adjacent electromagnet 3
Mutually attract, the downward micro-displacement of briquetting 5 force sheet rubber 6 is squeezed by the inclined-plane between 5 corner cut of rectangular channel and briquetting, thus via
Sheet rubber 6 applies pressure to tube surface, and the frictional force along pipe fitting axial direction for being applied to tube surface is generated by pressure.Electromagnetism pressure
The briquetting 5 of module unit applies pressure to tube surface through sheet rubber 6 by bar shaped groove, while in the lateral thruster course of work
Sheet rubber 6 can increase the frictional force between lateral thruster and tube surface, press to realize that lateral thruster applies tube surface
Power and frictional force.
When coil 4 is powered, institute's coiling 4 on the electromagnet 3 on circumferencial direction in outermost electromagnetism briquetting unit
Middle flowed through electric current is maximum, and the electric current flowed through in institute's coiling 4 on the electromagnet 3 in the electromagnetism briquetting unit of two sides is big
It is small identical, it is applied to the frictional force of tube surface to realize by lateral thruster outermost is maximum in the circumferential direction, by outermost
Lateral edge two sides reduce.
The frictional force as caused by pressure makes pipe fitting along the circumferential direction by different size of stress as a result, circumferentially square
It is gradually reduced to outermost lateral sides, so that the stress distribution of bending section in pipe fitting bending process is changed, so as to alleviate
Pipe fitting distortion of cross section reduces the thinned degree of wall thickness on the outside of pipe fitting.
Claims (8)
1. a kind of electromagnetic type pipe fitting bending forming lateral thruster, it is characterised in that: including side pushing block (1), electromagnetism briquetting unit and
Sheet rubber (6)；Pushing block (1) bottom surface in side is concave arc cylinder, and pushing block (1) bottom surface in side contacts pipe fitting, and concave arc cylinder is provided with
The notch of several bar shaped grooves of circumferentially spaced arrangement, each bar shaped groove attaches sheet rubber (6)；Dress inside side pushing block (1)
Have along the circumferentially-spaced several electromagnetism briquetting units arranged in parallel of concave arc cylinder, each electromagnetism briquetting unit is parallel to bar shaped
Through slot arranges and is mounted on side pushing block (1) inside；Each electromagnetism briquetting unit is mainly by several electromagnets (3) through briquetting (5)
It concatenates in a row and after electromagnet (3) concatenation both ends to constitute through briquetting (5) connection magnetic substance (2), on electromagnet (3)
It is wound with coil (4).
2. a kind of electromagnetic type pipe fitting bending forming lateral thruster according to claim 1, it is characterised in that: the electromagnetism
The briquetting (5) of briquetting unit extend into bar shaped groove and contacts with sheet rubber (6), after coil (4) is powered, electromagnetism briquetting unit
It attracts each other between interior magnetic substance (2) and electromagnet (3) and between adjacent electromagnet (3), squeezes briquetting (5) and be pressed downward rubber
Film (6), and then pressure is applied to tube surface, the frictional force along pipe fitting axial direction for being applied to tube surface is generated by pressure.
3. a kind of electromagnetic type pipe fitting bending forming lateral thruster according to claim 1, it is characterised in that: same electromagnetism pressure
Institute's coiling (4) is connected in series on each electromagnet (3) in module unit, on the electromagnet (3) in different electromagnetism briquetting units
Institute's coiling (4) is connected in parallel.
4. a kind of electromagnetic type pipe fitting bending forming lateral thruster according to claim 1, it is characterised in that: the electromagnetism
In briquetting unit, the both ends of electromagnet (3) are round estrade structure, and interlude is cylindrical structure, and cylindrical structure both ends are coaxial
It is fixed between the big end of round estrade structure at both ends, is wound on interlude cylindrical body coil (4), the round estrade structure at both ends
The rectangular channel for installing briquetting (5) is provided on the circular conical surface of bottom；Magnetic substance (2) be round estrade structure, electromagnet (3) and
The rectangular channel for installing briquetting (5) is provided on the circular conical surface of the round estrade structural base of magnetic substance (2)；Briquetting (5) is embedded in
The vallecular cavity and electromagnet (3) and magnetic substance (2) being spliced to form in the rectangular channel of two neighboring electromagnet (3) round estrade structure are each
From round estrade structure the vallecular cavity that is spliced to form of rectangular channel in so that between two neighboring electromagnet (3) both ends and electromagnetism
It is concatenated between body (3) and magnetic substance (2).
5. a kind of electromagnetic type pipe fitting bending forming lateral thruster according to claim 1 or 4, it is characterised in that: described
Briquetting (5) lower surface is spherical surface.
6. a kind of electromagnetic type pipe fitting bending forming lateral thruster according to claim 1, it is characterised in that: the electromagnetism
The both ends of briquetting unit are magnetic substance (2), and centre is several electromagnets (3).
7. a kind of electromagnetic type pipe fitting bending forming lateral thruster according to claim 1, it is characterised in that: the side pushes away
Block (1) is provided with along the circumferentially spaced multiple cylindrical channels of concave arc cylinder, and electromagnetism briquetting unit is installed in cylindrical channel
Interior, cylindrical channel is communicated with bar shaped groove.
8. a kind of electromagnetic type pipe fitting bending forming lateral thruster according to claim 6, it is characterised in that: the side pushes away
The both ends of block (1) be equipped with side end cap (7), side end cap (7) by screw be fixedly mounted on side pushing block (1) both ends simultaneously door in peace
Fill the cylindrical channel of electromagnetism briquetting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810178846.2A CN108480434B (en) | 2018-03-05 | 2018-03-05 | A kind of lateral thruster of electromagnetic type pipe fitting bending forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810178846.2A CN108480434B (en) | 2018-03-05 | 2018-03-05 | A kind of lateral thruster of electromagnetic type pipe fitting bending forming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108480434A CN108480434A (en) | 2018-09-04 |
| CN108480434B true CN108480434B (en) | 2019-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810178846.2A Active CN108480434B (en) | 2018-03-05 | 2018-03-05 | A kind of lateral thruster of electromagnetic type pipe fitting bending forming |
Country Status (1)
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| CN (1) | CN108480434B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109454189B (en) * | 2019-01-16 | 2019-07-30 | 成都航空职业技术学院 | A kind of radially shaped equipment of electromagnetic type |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011251324A (en) * | 2010-06-03 | 2011-12-15 | Mitsubishi Electric Corp | Method for bending square pipe |
| CN101972799A (en) * | 2010-11-08 | 2011-02-16 | 肇庆市骏驰科技有限公司 | Anti-crease bending processor for thin metal pipe |
| CN102151726A (en) * | 2010-11-24 | 2011-08-17 | 番禺珠江钢管有限公司 | Hot bending forming process and equipment for bent pipe of steel pipe |
| CN202539300U (en) * | 2012-05-15 | 2012-11-21 | 安徽德系重工科技有限公司 | Side pushing mechanism for numerical control pipe bending machine |
| CN202951744U (en) * | 2012-11-23 | 2013-05-29 | 宁波钜智自动化装备有限公司 | Pipe fitting boosting device for pipe bender |
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2018
- 2018-03-05 CN CN201810178846.2A patent/CN108480434B/en active Active
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| CN108480434A (en) | 2018-09-04 |
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