CN108339874B - A kind of pipe fitting bending forming assist device of multiple spot change propulsive - Google Patents
A kind of pipe fitting bending forming assist device of multiple spot change propulsive Download PDFInfo
- Publication number
- CN108339874B CN108339874B CN201810056767.4A CN201810056767A CN108339874B CN 108339874 B CN108339874 B CN 108339874B CN 201810056767 A CN201810056767 A CN 201810056767A CN 108339874 B CN108339874 B CN 108339874B
- Authority
- CN
- China
- Prior art keywords
- pushing block
- side pushing
- briquetting
- strip
- shaped rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005452 bending Methods 0.000 title claims abstract description 22
- 230000001141 propulsive effect Effects 0.000 title claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 3
- 238000004886 process control Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 15
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000009975 flexible effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004276 ovality control Methods 0.000 description 1
- 230000008719 thickening 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
- 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
- B21D7/12—Bending rods, profiles, or tubes with programme control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention discloses a kind of pipe fitting bending forming assist devices of multiple spot change propulsive.Including side pushing block, adjust briquetting, spring, strip-shaped rubber briquetting, screw, limited block and fixture；Side pushing block is installed in fixture, and rectangular channel and through-hole are provided in the pushing block of side, bar shaped rubber press is installed in rectangular channel, and spring is equipped in through-hole and adjusts briquetting, installs limited block between strip-shaped rubber briquetting, limited block is fixed on side pushing block by screw.The present invention from main regulation side pushing block thrust by, along the circumferentially distributed of tube surface, improving pipe fitting bend loss stress distribution, controlling bending forming process pipe fitting ovality and outer side surface Reducing thickness, and process simple with application method.
Description
Technical field
The present invention relates to a kind of assist devices, more particularly, to a kind of pipe fitting bending forming boosting of multiple spot change propulsive
Device, the bending forming for pipe fitting.
Background technique
Aviation pipe fitting mostly uses special material to be made, and has the specific performance requirements such as light weight.It is more compared to common pipe fitting
Guarantee that the structure property of aviation pipe fitting does not change using cold bending process, and the geometrical precision of its cross section of fluid channel is proposed
Higher requirement.The curved diameter of pipe fitting and diameter ratio are the physical quantity for characterizing bending deformation, the pipe of identical material, diameter and wall thickness
Diameter, curved diameter is smaller, indicates that deformation extent is bigger, and outside wall surface is thinned more serious, and ovality is bigger.It is directed to different size pipe at present
Part, main pass through provides corresponding maximum deformation quantity, and the processing specification of permission is controlled using experience or simplified formula, therefore
Existing small curved diameter bend pipe ovality control technique is improved and optimized, it has also become the important research target of mechanical manufacturing field
One of.When bending forming, outer side surface is thinned in the tensile stress being distributed on the outside of pipe fitting, while ellipticity being caused to increase.It cuts
Face shape distortion increases inner fluid streams dynamic resistance, affects expected hydrodynamic performance.
Traditional bent tube technique is bent by filler, but the technique causes difference between different pipe fitting finished products and increases
Greatly, and pipe fitting inner wall generates certain abrasion, it is difficult to guarantee product quality.In addition there are also the methods for using anti-deformation groove, by pipe fitting
Precompressed is made as ellipse, the recovered part after being bent, and the difficult point of the method application is to control the predeformation amount of pipe fitting.It is given birth at present
In production, going for a stroll for simple outside boosting block cooperation pipe fitting is mostly used.Boosting power bend section circumferential direction distribution by fixture to helping
The gross pressure of pushing block influences, and can not clearly regulate and control, and in order to improve assist, when needing to load bigger pressure, is easy to draw
The section deformation of straight pipe is played, therefore the assist for acting on pipe fitting is limited.
Summary of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of pipe fitting bending forming boosting of multiple spot change propulsive
Device.
The device that the present invention uses is as follows:
The present invention includes side pushing block, adjusts briquetting, spring, strip-shaped rubber briquetting, screw, limited block and fixture；Side pushes away
Block is installed in fixture, and rectangular channel and through-hole are provided in the pushing block of side, bar shaped rubber press is installed in rectangular channel, is equipped in through-hole
Spring and briquetting is adjusted, limited block is installed between strip-shaped rubber briquetting, limited block is fixed on side pushing block by screw.
The side pushing block is in semicircular ring column structure, and multiple tracks is provided with inside the pushing block of side and is arranged in parallel along side pushing block column direction
Rectangular channel, multiple tracks rectangular channel along semicircle ring cylinder circumferentially-spaced arrangement, and multiple tracks rectangular channel perforation extend to side pushing block
The inner ring cylinder of semicircle ring cylinder；The outer ring cylinder of side pushing block semicircle ring cylinder is provided with multiple rows of along side pushing block column direction parallel arrangement
And through-hole identical with rectangle slot number, uniformly at intervals along side pushing block column direction, each exhausting hole corresponds respectively to respectively every exhausting hole
Road rectangular channel, each exhausting hole are radially arranged along side pushing block and are communicated to corresponding rectangular channel；Bar shaped is installed in rectangular channel
Rubber press installs spring in through-hole, and through-hole end is by screw thread installation and adjustment briquetting, so that outer end is connected respectively in spring
Strip-shaped rubber briquetting and adjusting briquetting.
The present invention controls the decrement of spring, and then adjustment spring is applied by changing the depth for adjusting briquetting and screwing in through-hole
The thrust being added on strip-shaped rubber briquetting, the pressure adjusted between bar shaped rubber press and pipe fitting are distributed.
Using the end by nearside pushing block inner ring as inner end, inner end radially prolongs the strip-shaped rubber briquetting along side pushing block
Rectangular channel is stretched out, and is symmetrically provided with the strip groove along side pushing block column direction arrangement in the two sides side of inner end, bar shaped is recessed
It is disposed with limited block in slot, the inner ring cylinder for being fixed on side pushing block after strip groove by screw is extended at limited block both ends
Each strip-shaped rubber briquetting is carried out radial limit and support by limited block by edge.
The strip groove of adjacent strip-shaped rubber briquetting inner end along side pushing block extend radially outward rectangular channel after be connected to formed
Common space, the interior same limited block of arrangement of common space.
It is equipped with internal screw thread in the through-hole end of the side pushing block, adjusts briquetting and is equipped with external screw thread, adjusting briquetting passes through interior
External screw thread is coupled end of the through-hole towards radial outer end.
Using the end by nearside pushing block outer ring as outer end, outer end end surface is equipped with multiple the strip-shaped rubber briquetting
For being socketed the blind hole of spring, multiple blind holes are arranged along strip-shaped rubber briquetting length direction.
The ovality of assist device of the present invention pipe fitting suitable for small curved diameter bending forming process controls.
Fixture of the present invention is fixture of the CNC tube bending machine in bend pipe processing, is installed in the inner ring cylinder of side pushing block
The pipe fitting of forming to be bent.The present invention devises special boosting structure in the pushing block of side, can help to pipe fitting bending forming
Effect is pushed away, changing previous one monolithic entity structure of side pushing block can not be circumferentially distributed adjustable to the offer of pipe fitting bending forming
The drawbacks of boosting power.
The beneficial effects of the present invention are:
Using the present invention, the screw-in depth of briquetting can be adjusted by changing, from main regulation boosting block in pipe fitting lateral surface shape
At thrust profiles, improve the circumferentially distributed of the axial stress at bend loss interface, reduce outer side surface Reducing thickness and simultaneously inhibit oval
The increase of degree.
Device uses strip-shaped rubber briquetting, the coefficient of friction with pipe fitting contact surface is increased, for a certain size axial direction
Thrust requirements can reduce the normal pressure that need to be provided, and reduce the risk that straight pipe generates cross section distortion, and be replaceable structure.
Operation of the present invention is simple, low in cost, is applicable to the pipe fitting of different size in a certain range.In actual production
In, according to the circumferentially distributed required precision of bend loss axial stress, be reasonably arranged the strip-shaped rubber briquetting of corresponding density into
Row control.
Detailed description of the invention
Fig. 1 is the schematic diagram of apparatus of the present invention；
Fig. 2 is the cross-sectional view of apparatus of the present invention；
Fig. 3 is the side pushing block schematic diagram (removal fixture) of apparatus of the present invention；
Fig. 4 is that the spring of apparatus of the present invention disposes schematic diagram；
Fig. 5 is the limited block structural schematic diagram of apparatus of the present invention；
Fig. 6 is the clamp structure schematic diagram of apparatus of the present invention.
In figure, side pushing block 1 adjusts briquetting 2, spring 3, strip-shaped rubber briquetting 4, screw 5, limited block 6, fixture 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, adjusts briquetting 2, spring 3, strip-shaped rubber briquetting 4, spiral shell
Nail 5, limited block 6 and fixture 7；Side pushing block 1 is installed in fixture 7, is provided with rectangular channel and through-hole in side pushing block 1, in rectangular channel
Bar shaped rubber press 4 is installed, spring 3 is installed in through-hole and adjusts briquetting 2, limited block is installed between strip-shaped rubber briquetting 4
6, limited block 6 is fixed on side pushing block 1 by screw 5.
As shown in Figures 2 and 3, side pushing block 1 is in semicircular ring column structure, is provided with multiple tracks along 1 column of side pushing block inside side pushing block 1
The rectangular channel of direction parallel arrangement, rectangular channel both ends do not extend through out side pushing block 1, week of the multiple tracks rectangular channel along semicircle ring cylinder
To arranged for interval, and the perforation of multiple tracks rectangular channel extends to the inner ring cylinder of 1 semicircle ring cylinder of side pushing block；1 semicircular ring of side pushing block
The outer ring cylinder of cylinder be provided with it is multiple rows of along 1 column direction of side pushing block parallel arrangement and through-hole identical with rectangle slot number, every row it is logical
Spring uniformly at intervals, is installed along 1 column direction of side pushing block in hole in through-hole, as shown in figure 4, each exhausting hole corresponds respectively to each road rectangle
Slot, each through-hole along the radial arrangement of side pushing block 1, arrange along 1 radial direction of side pushing block and be communicated to corresponding square by each exhausting hole
Shape slot, each exhausting hole and corresponding rectangular channel are arranged and are connected to along 1 radial direction of side pushing block together.
As shown in Fig. 2, being equipped with strip-shaped rubber briquetting 4 in rectangular channel, spring 3 is installed, through-hole end passes through spiral shell in through-hole
Line installation and adjustment briquetting 2, so that outer end is connected respectively to strip-shaped rubber briquetting 4 and adjusts briquetting 2 in spring 3.Side pushing block 1 leads to
It is equipped with internal screw thread in bore ends, adjusts briquetting 2 and is equipped with external screw thread, adjusts briquetting 2 by internal and external threads and is coupled through-hole court
To the end of radial outer end.Strip-shaped rubber briquetting 4 is set on the end surface of outer end using the end by 1 outer ring of nearside pushing block as outer end
There are multiple blind holes for being used to be socketed spring 3, multiple blind holes are arranged along 4 length direction of strip-shaped rubber briquetting, i.e., along 1 column side of side pushing block
To arrangement.
In specific implementation, the adjusting briquetting 2 on entire row through-hole can be adjusted together, and spring 3 is allowed uniformly to apply thrust to bar shaped
Rubber press 4, so that the boosting power of 4 monolith of strip-shaped rubber briquetting being applied on pipe fitting is uniform.
Using the end by 1 inner ring of nearside pushing block as inner end, inner end radially extends strip-shaped rubber briquetting 4 along side pushing block 1
Rectangular channel out, and the strip groove along 1 column direction of side pushing block arrangement, strip groove are symmetrically provided in the two sides side of inner end
It is inside disposed with limited block 6, as shown in figure 5,6 both ends of limited block are equipped with hole, after strip groove is extended at 6 both ends of limited block
It is fixed on the inner ring cylinder edge of side pushing block 1 by screw 5, each strip-shaped rubber briquetting 4 is carried out by radial direction by limited block 6
Limit and support, so that strip-shaped rubber briquetting 4 does not drop out radially from 1 inner cylinder of side pushing block, and make strip-shaped rubber briquetting 4
The flexible activity space under the promotion of spring 3.
As shown in Fig. 2, the strip groove of adjacent 4 inner end of strip-shaped rubber briquetting extends radially outward rectangle along side pushing block 1
Connection forms common space after slot, the same limited block 6 of arrangement in common space.
As shown in fig. 6, being equipped with the inner cavity of the semicolumn bodily form in fixture 7, inner chamber bottom surface is equipped with to be installed for accepting side pushing block 1
Inward flange, inner cavity one end runs through the external world, and the inner cavity other end is equipped with the inward flange for axially trapping limiting side pushing block 1.
Installment work process of the invention is:
1) each strip-shaped rubber briquetting 4 is fitted into each road rectangular channel of side pushing block 1, and limited block 6 passes through adjacent bar rubber
In the strip groove of two end strip-shaped rubber briquettings 4 in common space between the strip groove of glue laminated block 4 and circumferentially,
Each limited block 6 is fixed on the inner ring cylinder of side pushing block 1 with screw 5.
2) spring 3 is fitted into each through-hole that pushing block 1 outer ring cylinder in side opens up, 3 bottom of spring and strip-shaped rubber briquetting 4
On the blind hole pressing that opens up, the top of spring 3 is pressed with the adjusting briquetting 2 for screwing in through-hole.
3) change and adjust the depth that briquetting 2 screws in through-hole, the pressure distribution adjusted between bar shaped rubber press 4 and pipe fitting meets
It is required that.When needing to further decrease ovality and external arc wall surface Reducing thickness, it is possible to increase the screw-in that outside adjusts briquetting 2 is deep
Degree, but the maximum pressing force of limitation is needed to prevent from being crushed.After carrying out above-mentioned adjusting, if Inner arc wall surface is produced due to thickening
When buckling phenomena, then need accordingly to reduce the screw-in depth that inside adjusts briquetting.
4) then side pushing block 1 is embedded in the inner cavity of fixture 7.After clamping device, make outside strip-shaped rubber briquetting fitting pipe fitting
Side is positioned, and applies radial pressure and axis thrust carries out boosting.
After clamping device 7, position by feed motion oriented side pushing block 1 relative to tube surface makes after applying pressure
Spring 3 reaches default decrement, in elbow curvature forming process, by applying axial force to fixture 7, makes strip-shaped rubber briquetting
4 generate sliding friction with tube surface to be curved.
5) the strip-shaped rubber briquetting 4 that knockout screw 5 is worn with 6 Duis of limited block is replaced.
It can be seen that the present invention is designed by the structures such as circumferentially distributed from main regulation side pushing block thrust along tube surface,
Improve pipe fitting bend loss stress distribution, bending forming process pipe fitting ovality and outer side surface Reducing thickness are controlled, and
It processes simple with application method.
Claims (6)
1. a kind of pipe fitting bending forming assist device of multiple spot change propulsive, it is characterised in that: including side pushing block (1), adjust briquetting
(2), spring (3), strip-shaped rubber briquetting (4), screw (5), limited block (6) and fixture (7)；Side pushing block (1) is installed on fixture
(7) in, it is provided with rectangular channel and through-hole in side pushing block (1), bar shaped rubber press (4) are installed in rectangular channel, bullet is installed in through-hole
Spring (3) and briquetting (2) are adjusted, limited block (6) is installed between strip-shaped rubber briquetting (4), limited block (6) passes through screw (5)
It is fixed on side pushing block (1)；
The side pushing block (1) is in semicircular ring column structure, and it is flat along side pushing block (1) column direction that multiple tracks is provided with inside side pushing block (1)
Row arrangement rectangular channel, multiple tracks rectangular channel along semicircle ring cylinder circumferentially-spaced arrangement, and multiple tracks rectangular channel perforation extend to
The inner ring cylinder of side pushing block (1) semicircle ring cylinder；The outer ring cylinder of side pushing block (1) semicircle ring cylinder is provided with multiple rows of along side pushing block
(1) column direction parallel arrangement and through-hole identical with rectangle slot number, every exhausting hole along side pushing block (1) column direction uniformly at intervals,
Each exhausting hole corresponds respectively to each road rectangular channel, and each exhausting hole is radially arranged along side pushing block (1) and is communicated to corresponding square
Shape slot；It is equipped in rectangular channel strip-shaped rubber briquetting (4), spring (3) is installed in through-hole, through-hole end passes through screw thread installation and adjustment
Briquetting (2), so that spring (3) interior outer end is connected respectively to strip-shaped rubber briquetting (4) and adjusts briquetting (2).
2. a kind of pipe fitting bending forming assist device of multiple spot change propulsive according to claim 1, it is characterised in that: described
Strip-shaped rubber briquetting (4) using by nearside pushing block (1) inner ring end as inner end, inner end is radially extended along side pushing block (1)
Rectangular channel out, and it is symmetrically provided with the strip groove along side pushing block (1) column direction arrangement in the two sides side of inner end, bar shaped is recessed
It is disposed in slot limited block (6), limited block (6) both ends, which are extended, is fixed on side pushing block by screw (5) after strip groove
(1) each strip-shaped rubber briquetting (4) is carried out radial limit and support by limited block (6) by inner ring cylinder edge.
3. a kind of pipe fitting bending forming assist device of multiple spot change propulsive according to claim 2, it is characterised in that: adjacent
Strip-shaped rubber briquetting (4) inner end strip groove along side pushing block (1) extend radially outward rectangular channel after connection formed it is common empty
Between, the same limited block (6) of arrangement in common space.
4. a kind of pipe fitting bending forming assist device of multiple spot change propulsive according to claim 1, it is characterised in that: described
Side pushing block (1) through-hole end in be equipped with internal screw thread, adjust briquetting (2) be equipped with external screw thread, adjust briquetting (2) pass through inside and outside spiral shell
Line is coupled end of the through-hole towards radial outer end.
5. a kind of pipe fitting bending forming assist device of multiple spot change propulsive according to claim 1, it is characterised in that: described
Strip-shaped rubber briquetting (4) using by nearside pushing block (1) outer ring end as outer end, outer end end surface be equipped with it is multiple be used for cover
The blind hole of spring (3) is connect, multiple blind holes are arranged along strip-shaped rubber briquetting (4) length direction.
6. a kind of pipe fitting bending forming assist device of multiple spot change propulsive according to claim 1, it is characterised in that: described
The ovality of assist device pipe fitting suitable for small curved diameter bending forming process controls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810056767.4A CN108339874B (en) | 2018-01-18 | 2018-01-18 | A kind of pipe fitting bending forming assist device of multiple spot change propulsive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810056767.4A CN108339874B (en) | 2018-01-18 | 2018-01-18 | A kind of pipe fitting bending forming assist device of multiple spot change propulsive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108339874A CN108339874A (en) | 2018-07-31 |
| CN108339874B true CN108339874B (en) | 2019-03-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810056767.4A Active CN108339874B (en) | 2018-01-18 | 2018-01-18 | A kind of pipe fitting bending forming assist device of multiple spot change propulsive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108339874B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994127A (en) * | 2018-09-12 | 2018-12-14 | 襄阳福康达机械有限公司 | Bending machine is used in a kind of processing of stainless steel tube |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007319916A (en) * | 2006-06-05 | 2007-12-13 | Jfe Steel Kk | Method and apparatus for bending pipe |
| CN101670393A (en) * | 2009-08-26 | 2010-03-17 | 厦门市易洁卫浴有限公司 | Method for realizing bending two arcs of curved pipe and device thereof |
| JP2012135797A (en) * | 2010-12-27 | 2012-07-19 | Noritz Corp | Method of bending work of metal pipe, roll block of pipe bender used for the method, and metal pipe worked with the method |
| CN103406410A (en) * | 2013-08-07 | 2013-11-27 | 和和机械（张家港）有限公司 | Guiding-die adjusting device applied to pipe bending machine |
| CN105312376A (en) * | 2015-12-01 | 2016-02-10 | 浙江大学 | Cold pressing and bending forming die of large-diameter pipe |
| CN107583980A (en) * | 2017-11-15 | 2018-01-16 | 吉林大学 | Tubing free bend equipment with Wrinkle-resisting unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050183488A1 (en) * | 2004-02-19 | 2005-08-25 | Cheng-Chung Chen | Plate and tube bending device |
-
2018
- 2018-01-18 CN CN201810056767.4A patent/CN108339874B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007319916A (en) * | 2006-06-05 | 2007-12-13 | Jfe Steel Kk | Method and apparatus for bending pipe |
| CN101670393A (en) * | 2009-08-26 | 2010-03-17 | 厦门市易洁卫浴有限公司 | Method for realizing bending two arcs of curved pipe and device thereof |
| JP2012135797A (en) * | 2010-12-27 | 2012-07-19 | Noritz Corp | Method of bending work of metal pipe, roll block of pipe bender used for the method, and metal pipe worked with the method |
| CN103406410A (en) * | 2013-08-07 | 2013-11-27 | 和和机械（张家港）有限公司 | Guiding-die adjusting device applied to pipe bending machine |
| CN105312376A (en) * | 2015-12-01 | 2016-02-10 | 浙江大学 | Cold pressing and bending forming die of large-diameter pipe |
| CN107583980A (en) * | 2017-11-15 | 2018-01-16 | 吉林大学 | Tubing free bend equipment with Wrinkle-resisting unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108339874A (en) | 2018-07-31 |
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