CN106270052B - Long radius thin-wallconduit pushes away o ing method and device - Google Patents
Long radius thin-wallconduit pushes away o ing method and device Download PDFInfo
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- CN106270052B CN106270052B CN201610730672.7A CN201610730672A CN106270052B CN 106270052 B CN106270052 B CN 106270052B CN 201610730672 A CN201610730672 A CN 201610730672A CN 106270052 B CN106270052 B CN 106270052B
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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
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
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Abstract
The present invention relates to a kind of long radius thin-wallconduits to push away o ing method and device, belongs to bend pipe manufacture Technology of Plastic Processing field.The present invention provides a kind of device and methods for realizing long radius thin-wallconduit precision pulling o ing, the manufacturing cost that traditional numerical-controlled bending bend pipe needs larger diameter wheel model in the process is saved, the ability of bend pipe machine equipment forming long radius conduit is substantially increased.Entire manufacturing process and apparatus structure are rationally and science, method are feasible and reliable, easy to operate and can ensure that bending quality, substantially increase the efficiency of production.The conduit of forming disclosure satisfy that aerospace flight vehicle requirement, there is more wide market application prospect.
Description
Technical field
The present invention relates to bend pipe manufacture Technology of Plastic Processing fields, and in particular to a kind of long radius thin-wallconduit pushes away curved
Manufacturing process and device.
Background technology
Metal pipe material is widely used in structural member in the fields such as machinery, automobile due to having many advantages, such as that light-weight, intensity is high
Manufacture, while can also be used as the carrier of various fluid media (medium)s transmission.The supply of material state of tubing is mostly straight tube, in practical application
When, many occasions are required for carrying out bending machining in advance, can select different processing methods, wherein numerical control curved according to requirements
Pipe machine can accurate as requested, smoothly carry out the bending machining of tubing, and forming accuracy is high, technology stability is good, is suitable for
The precision bending of various tubing shapes.
In recent years, small-bend radius (relative bending radius R/D≤2, R- bending radius, D- tube outer diameters) thin-walled curved conductor
With long radius relative bending radius R/D >=8, R- bending radius, D- tube outer diameters) thin-wallconduit is (contour in Aeronautics and Astronautics
Increasingly extensive application in technical field.Wherein long radius thin-wallconduit is mainly used for that installation space is small, modular construction is compact
Occasion conveying liquid or gaseous fluid low-pressure tube in, be chiefly used in aerospace flight vehicle fuel system and exhaust system etc.
Field.With the light-weighted growth requirement of aircraft, the cooperation of entire aircraft interior electrical equipment and conduit is more and more closer,
It is the smaller the better to the bulk requirement of engine, in order to avoid the interference of electric component, thus connect apart from larger two
A member cannot use long straightway straight tube, and long radius conduit can only be used to get around member, thus exist in whole system certain
The demand of the long radius conduit of quantity.
At present because being limited by equipment, mold and material in terms of the processing of Large Diameter Pipeline thin-walled curved conductor, in technique always
Too big breakthrough is not obtained, so being also difficult to provide the product for complying fully with requirement so far, conduit form accuracy is relatively poor.
For the conduit of long radius, larger-diameter wheel model, part major diameter are needed during traditional numerical-controlled bending bend pipe
Wheel model has been even more than the pipe bender head crystallized ability limit.Particularly with the bend wheel mould that relative bending radius is larger, mold
Processing and manufacturing difficulty is big, and of high cost, installation difficulty is big, and the forming of traditional numerical-controlled bending cannot be satisfied long radius conduit
Manufacture production.Thus development Large Diameter Pipeline thin-walled curved conductor Precision Forming Technology have become critical issue in the urgent need to address and
Important development direction.
Invention content
(1) technical problems to be solved
The technical problem to be solved by the present invention is to：How the defect of traditional numerical-controlled bending forming arrangements, design one are overcome
Kind new long radius thin-wallconduit bending forming method and device.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of long radius thin-wallconduits to push away o ing device,
Including first push away curved guide wheel 1, the first mandrel 2, wheel stand 3, the second mandrel 4, second push away curved guide wheel 5, wheel seat 6, third spindle 7,
Push away curved wheel 8, pipe bending wheel 9, central shaft 10, mandrel 11 and push rod 12；
First, which pushes away curved guide wheel 1, is fixed by the first mandrel 2 with wheel stand 3, is pushed away curved guide wheel 5 and is passed through the second mandrel 4 and guide wheel
Seat 3 is fixed, and wheel stand 3 is fastened by dovetail groove and bending machine interface；First, which pushes away curved guide wheel 1 and second, pushes away the radial direction of curved guide wheel 5
Limit annular groove depth is the radius of conduit 13, first push away curved guide wheel 1 and second push away curved guide wheel 5 radius be 2~4 times and lead
The outer diameter of pipe 13, first, which pushes away curved guide wheel 1 and second, pushes away curved guide wheel 5 as the guiding module during pushing away o ing；Curved wheel 8 is pushed away to pass through
Third spindle 7 is fixed with wheel seat 6, is pushed away curved wheel 8 and is fastened by dovetail groove and bending machine interface；Push away the radial limit annular of curved wheel 8
Groove depth is the radius of conduit 13, and the radius for pushing away curved wheel 8 is the outer diameter of 2~3 times of conduits 13；Pipe bending wheel 9 by central shaft 10 with
Pipe bender head is fixed；The radial limit annular groove depth of pipe bending wheel 9 is the radius of conduit 13, and the radius of pipe bending wheel 9 is 3~5
The outer diameter of times conduit 13；It pushes away curved wheel 8 and pipe bending wheel 9 and pushes away o ing for clamping the realization of conduit 13；Mandrel 11 is sleeved on push rod 12
One end, conduit 13 are inserted in from 11 one end of mandrel, are sleeved on push rod 12 and mandrel 11, be cased with mandrel 11 push rod 12 pushed away along first it is curved
The limit annular groove of guide wheel 1 pushes away 5 direction level of curved guide wheel to second and penetrates.
Preferably, the mandrel 11 is spherical mandrel.
The method that long radius thin-wallconduit pushes away o ing is carried out using the device the present invention also provides a kind of,
Include the following steps：
S1, the centerline theory length for calculating 13 theoretical model of conduit, and complete the sawing of raw material conduit 13；Institute
It is straight tube to state conduit 13；
S2, the position for adjusting 11 end of mandrel, make 11 end of mandrel be no more than the point of contact of horizontal line and pipe bending wheel 9, will lead
13 inner wall sleeve of pipe is on mandrel 11；
S3, bending radius value is determined according to 13 theoretical model of conduit, edit numerical controlled bending of pipe program, bending radius is by theoretical curved
Bilge radius value inputs, and using curved wheel 8 is pushed away and pipe bending wheel 9 clamps conduit 13 and carries out pushing away o ing for the first time, pushes away curved wheel 8 and pipe bending wheel
The 9 o ing speed that pushes away is 2mm/s~4mm/s；
S4, while conduit 13 pushes away curved, using first push away curved guide wheel 1 and second push away curved guide wheel 5 limit annular groove paste
Tight conduit 13 carry out auxiliary push away it is curved, auxiliary push away curved speed ratio push away curved wheel 8 and pipe bending wheel 9 push away o ing speed it is big by 0.8~
1.5mm/s；Before bending process reaches theoretical bending angle at 20 °~30 °, pushes away curved guide wheel 1 and second by first and push away curved lead
The auxiliary of wheel 5 push away curved speed be adjusted to push away curved wheel 8 and pipe bending wheel 9 to push away o ing speed consistent, until complete first time push away it is curved
Forming；
S5, conduit 13 is measured with radius gauge push away the bending radius that the bend pipe 14 after o ing actually pushes away o ing；
S6, it anneals to having measured the bend pipe 14 after actual flexion radius, annealing temperature is in recrystallization annealing temperature value
Add 15 DEG C, soaking time is 1h~2h, is cooled down with stove；
Second S7, progress of numerical control push away curved bending forming, and it is (real to push away winding bilge radius value=theory bending radius-for the second time
Border measures bending radius-theory bending radius), wherein the practical bending radius that measures subtracts theoretical bending radius value as radius compensation
Value pushes away bending forming 1~3mm/s of speed of curved wheel 8 and pipe bending wheel 9, and first, which pushes away curved guide wheel 1 and second, pushes away the auxiliary of curved guide wheel 5
Push away the big 0.5~1.0mm/s of rate of bending that curved speed ratio pushes away curved wheel 8 and pipe bending wheel 9；Reach theoretical bending angle in bending process
At 10 ° before~15 °, by first push away curved guide wheel 1 and second push away curved guide wheel 5 auxiliary push away curved speed and be adjusted to and push away curved wheel 8 and curved
The speed of pipe wheel 9 is consistent, until completing to push away o ing for the second time；
S8, second of numerical control is measured with radius gauge push away the bending radius that bend pipe bending 14 actually pushes away o ing, if practical measure
Value meets theoretical bending radius value, then pushes away o ing and terminate, if not meeting theoretical bending radius value, thens follow the steps S9；
S9, step S6-S8 is repeated, until the final curved radius measurement that pushes away meets theoretical bending radius value.
(3) advantageous effect
The present invention provides a kind of device and methods for realizing long radius thin-wallconduit precision pulling o ing, save
It is big to substantially increase the forming of bend pipe machine equipment for the manufacturing cost that larger diameter wheel model is needed during traditional numerical-controlled bending bend pipe
The ability of bending radius conduit.Entire manufacturing process and apparatus structure rationally and science, method it is feasible and reliable, it is easy to operate and
It can ensure that bending quality, substantially increase the efficiency of production.The conduit of forming disclosure satisfy that aerospace flight vehicle requirement, have compared with
For wide market application prospect.
Description of the drawings
Fig. 1 is that the long radius thin-wallconduit of the embodiment of the present invention pushes away o ing equipments overall structure schematic diagram；
Fig. 2 is raw material conduit (straight tube) schematic diagram；
Fig. 3 is the schematic diagram after raw material duct forming.
Specific implementation mode
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to the present invention's
Specific implementation mode is described in further detail.
In the embodiment of the present invention, it is 5A06 tubing to be set as the aluminum alloy conduit after shape, and specification is Φ 26mm × 1mm (tubing
Outer diameter × wall thickness), bending radius R520mm, relative bending radius R/D=20>8 (belong to long radius, wherein R- bendings
Radius, D- tube outer diameters).
As shown in Figure 1, the device of the embodiment of the present invention pushes away curved guide wheel 1, the first mandrel 2, wheel stand 3, second including first
Mandrel 4, second push away curved guide wheel 5, wheel seat 6, third spindle 7, push away curved wheel 8, pipe bending wheel 9, central shaft 10, mandrel 11 and push rod 12.
The mandrel 11 of used push rod 12, spherical shape may be used well known NORMAL BEND mold and be designed, only to macrobending half
Diameter thin-wallconduit mold carries out special designing.Wherein：In order to push away the smooth forward slip of the curved energy of conduit in the process, pushes away curved guided mode and use
First push away curved guide wheel 1 and second push away curved guide wheel 5 guided mode replace traditional whole guiding module of going for a stroll, first pushes away curved guide wheel 1
Curved guide wheel 5, which is pushed away, with second passes through two by the first mandrel 2 and the second mandrel 4 and 3 secure fit of wheel stand, wheel stand 3 respectively
Dovetail groove is fastened with bending machine equipment interface；First push away curved guide wheel 1 and second push away curved guide wheel 5 radial limit annular groove depth be
The outer diameter of conduit 13, first, which pushes away curved guide wheel 1 and second, pushes away the radius of curved guide wheel 5 as 2~4 times of 13 outer diameters of conduit；Curved wheel 8 is pushed away to pass through
Third spindle 7 and 6 secure fit of wheel seat push away curved wheel 8 and are fastened by a dovetail groove and bending machine equipment interface；Push away 8 diameters of curved wheel
It is 13 outer diameter of conduit to limit annular groove depth, it is 2~3 times of 13 outer diameters of conduit to push away 8 radiuses of curved wheel；Pipe bending wheel 9 passes through central shaft
10 with bend pipe machine equipment head secure fit；The radial limit annular groove depth of pipe bending wheel 9 is 13 outer diameter of conduit, 9 radius of pipe bending wheel
For 3~5 times of 13 outer diameters of conduit.
As shown in Figure 2 and Figure 3, the present invention also provides a kind of long radius thin-wallconduit precision pulling o ing method, packets
Include following steps：
1) the centerline theory length of conduit theoretical model is calculated, and completes the sawing of raw material conduit 13.Conduit
13 be straight tube.
2) position of 11 end of adjustment mandrel ensures that 11 end of mandrel is no more than the point of contact of horizontal line and pipe bending wheel 9, conduit
13 inner wall sleeves are on mandrel 11.
3) long radius value is determined according to conduit theoretical model, edits numerical controlled bending of pipe program, bending radius is by theoretical half
Diameter inputs.Using curved wheel 8 is pushed away and pipe bending wheel 9 clamps conduit 13 and carries out pushing away o ing for the first time, pushes away curved wheel 8 and pipe bending wheel 9 pushes away
O ing speed is 2mm/s.
4) while conduit 13 pushes away curved, using first push away curved guide wheel 1 and second push away curved guide wheel 5 limit annular groove be adjacent to
Conduit 13 carry out auxiliary push away it is curved, it is auxiliary push away speed should than push away it is curved wheel 8 and pipe bending wheel 9 rate of bending it is big 0.8mm/s, that is, push away curved guide wheel
1 and push away curved guide wheel 5 it is auxiliary push away speed be 2.8mm/s；Before bending process reaches theoretical bending angle at 20 °, first is pushed away
Curved guide wheel 1 and second push away curved guide wheel 5 it is auxiliary push away speed be adjusted to push away it is curved wheel 8 and the speed of pipe bending wheel 9 it is consistent, i.e., first pushes away curved lead
The auxiliary speed that pushes away that wheel 1 and second pushes away curved guide wheel 5 is 2mm/s, until completing to push away o ing for the first time.
5) it measures conduit 13 with radius gauge and pushes away the bending radius that the bend pipe 14 after o ing actually pushes away o ing, actually push away
The bending radius value of o ing is R600mm, is more than theoretical radius of curvature R 520mm.Under normal circumstances, once pushing away o ing is difficult
The precision pulling o ing for realizing long radius, needs repeatedly to push away o ing, pushes away o ing needs every time and is pushed away according to previous
Curved radius carries out radius compensation.
6) it has measured step 5) bend pipe 14 after bending radius to anneal, annealing temperature is in recrystallization annealing temperature value
Add 15 DEG C, i.e. annealing temperature is selected as 380 DEG C, and soaking time 1.5h is cooled down with stove.
7) it carries out second of numerical control and pushes away curved bending forming, it is (practical to push away winding bilge radius value=theory bending radius-for the second time
Measure bending radius-theory bending radius), wherein the practical bending radius that measures subtracts theoretical bending radius value as radius compensation
Value, i.e. radius compensation value are 80mm, then it is R440mm to push away winding bilge radius value for the second time, push away curved wheel 8 and pipe bending wheel 9 is bent to
Shape speed 1mm/s, the auxiliary speed that pushes away should be bigger 0.5mm/s than pushing away the rate of bending of curved wheel 8 and pipe bending wheel 9, that is, pushes away curved guide wheel 1 and push away curved
The auxiliary speed that pushes away of guide wheel 5 is 1.5mm/s；Before bending process reaches theoretical bending angle at 10 °, curved guide wheel 1 is pushed away by first
The auxiliary speed that pushes away that curved guide wheel 5 is pushed away with second is adjusted to and pushes away curved wheel 8 and the speed of pipe bending wheel 9 is consistent, i.e., first pushes away curved guide wheel 1 and the
The two auxiliary speed that push away for pushing away curved guide wheel 5 are 1mm/s, until completing to push away o ing for the second time.
8) it measures second of numerical control with radius gauge and pushes away the bending radius that bend pipe bending 14 actually pushes away o ing.Actual measured value is
R550mm。
9) it has measured step 8) bend pipe 14 after bending radius to anneal, annealing temperature is in recrystallization annealing temperature value
Add 15 DEG C, i.e. annealing temperature is selected as 380 DEG C, and soaking time 1.5h is cooled down with stove.
10) it carries out third time numerical control and pushes away curved bending forming, it is (real to push away winding bilge radius value=theory bending radius-for the third time
Border measures bending radius-theory bending radius), wherein the practical bending radius that measures subtracts theoretical bending radius value as radius compensation
Value, i.e. radius compensation value are 30mm, then it is 490 to push away winding bilge radius value for the third time, push away the bending forming of curved wheel 8 and pipe bending wheel 9
Speed 1mm/s, the auxiliary speed that pushes away should be bigger 0.5mm/s than pushing away the rate of bending of curved wheel 8 and pipe bending wheel 9, i.e., first pushes away curved guide wheel 1 and the
The two auxiliary speed that push away for pushing away curved guide wheel 5 are 1.5mm/s；Before bending process reaches theoretical bending angle at 10 °, first is pushed away curved
Guide wheel 1 and second push away curved guide wheel 5 it is auxiliary push away speed be adjusted to push away it is curved wheel 8 and the speed of pipe bending wheel 9 it is consistent, i.e., first pushes away curved guide wheel
1 and second push away curved guide wheel 5 it is auxiliary push away speed be 1mm/s, until complete third time push away o ing.
11) it measures third time numerical control with radius gauge and pushes away the bending radius that bend pipe bending 14 actually pushes away o ing.Actual measured value
For R520.The final curved radius measurement that pushes away meets theoretical value.
12) bend pipe 14 is removed, surface oil stain, product delivery are removed.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (2)
1. it is a kind of using long radius thin-wallconduit push away o ing device carry out long radius thin-wallconduit push away o ing
Method, which is characterized in that
The long radius thin-wallconduit pushes away o ing device and pushes away curved guide wheel (1), the first mandrel (2), wheel stand including first
(3), the second mandrel (4), second push away curved guide wheel (5), wheel seat (6), third spindle (7), push away curved wheel (8), pipe bending wheel (9), center
Axis (10), mandrel (11) and push rod (12)；
First pushes away curved guide wheel (1) is fixed by the first mandrel (2) and wheel stand (3), is pushed away curved guide wheel (5) and is passed through the second mandrel (4)
Fixed with wheel stand (3), wheel stand (3) is fastened by dovetail groove and bending machine interface；First push away curved guide wheel (1) and second push away it is curved
The radial limit annular groove depth of guide wheel (5) is the radius of conduit (13), and first, which pushes away curved guide wheel (1) and second, pushes away curved guide wheel
(5) radius is the outer diameter of 2~4 times of conduits (13), and first, which pushes away curved guide wheel (1) and second, pushes away curved guide wheel (5) as pushing away and curve
Guiding module during shape；It is fixed by third spindle (7) and wheel seat (6) to push away curved wheel (8), push away curved wheel (8) by dovetail groove and
Bending machine interface fastens；The radial limit annular groove depth for pushing away curved wheel (8) is the radius of conduit (13), pushes away the radius of curved wheel (8)
For the outer diameter of 2~3 times of conduits (13)；Pipe bending wheel (9) is fixed by central shaft (10) with pipe bender head；The diameter of pipe bending wheel (9)
To the radius that limit annular groove depth is conduit (13), the radius of pipe bending wheel (9) is the outer diameter of 3~5 times of conduits (13)；Push away curved wheel
(8) and pipe bending wheel (9) pushes away o ing for clamping conduit (13) realization；Mandrel (11) is sleeved on one end of push rod (12), conduit
(13) it is inserted in, is sleeved on push rod (12) and mandrel (11) from mandrel (11) one end, be cased with the push rod (12) of mandrel (11) along first
The limit annular groove for pushing away curved guide wheel (1) pushes away curved guide wheel (5) direction level to second and penetrates；
It the described method comprises the following steps：
S1, the centerline theory length for calculating conduit (13) theoretical model, and complete the sawing of raw material conduit (13)；Institute
It is straight tube to state conduit (13)；
S2, the position for adjusting mandrel (11) end, make mandrel (11) end be no more than the point of contact of horizontal line and pipe bending wheel (9), will
Conduit (13) inner wall sleeve is on mandrel (11)；
S3, bending radius value being determined according to conduit (13) theoretical model, editing numerical controlled bending of pipe program, bending radius is bent as theoretical
Radius value inputs, and o ing is pushed away using pushing away curved wheel (8) and pipe bending wheel (9) and clamping conduit (13) progress first time, push away curved wheel (8) and
The o ing speed that pushes away of pipe bending wheel (9) is 2mm/s~4mm/s；
S4, while conduit (13) pushes away curved, push away curved guide wheel (1) and second using first and push away the limit annular groove of curved guide wheel (5)
Be adjacent to conduit (13) carry out auxiliary push away it is curved, auxiliary push away curved speed ratio push away curved wheel (8) and pipe bending wheel (9) to push away o ing speed big
0.8~1.5mm/s；Before bending process reaches theoretical bending angle at 20 °~30 °, curved guide wheel (1) and second are pushed away by first
Push away curved guide wheel (5) auxiliary push away curved speed be adjusted to push away curved wheel (8) and pipe bending wheel (9) to push away o ing speed consistent, up to complete
At pushing away o ing for the first time；
S5, conduit (13) is measured with radius gauge push away the bending radius that the bend pipe (14) after o ing actually pushes away o ing；
S6, it anneals to having measured the bend pipe (14) after actual flexion radius, annealing temperature adds in recrystallization annealing temperature value
15 DEG C, soaking time is 1h~2h, is cooled down with stove；
Second S7, progress of numerical control push away curved bending forming, and it is (practical to survey to push away winding bilge radius value=theory bending radius-for the second time
Measure bending radius-theory bending radius), wherein it is radius compensation value that practical measurement bending radius, which subtracts theoretical bending radius value,
Bending forming 1~3mm/s of speed of curved wheel (8) and pipe bending wheel (9) is pushed away, first, which pushes away curved guide wheel (1) and second, pushes away curved guide wheel (5)
Auxiliary pushes away the big 0.5~1.0mm/s of rate of bending that curved speed ratio pushes away curved wheel (8) and pipe bending wheel (9)；Reach theoretical in bending process
Before bending angle at 10 °~15 °, by first push away curved guide wheel (1) and second push away curved guide wheel (5) auxiliary push away curved speed be adjusted to
It is consistent with the speed of pipe bending wheel (9) to push away curved wheel (8), until completing to push away o ing for the second time；
S8, second of numerical control is measured with radius gauge push away the bending radius that bend pipe bending (14) actually pushes away o ing, if actual measured value
Meet theoretical bending radius value, then push away o ing and terminate, if not meeting theoretical bending radius value, thens follow the steps S9；
S9, step S6-S8 is repeated, until the final curved radius measurement that pushes away meets theoretical bending radius value.
2. the method as described in claim 1, which is characterized in that the mandrel (11) is spherical mandrel.
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| CN108927427A (en) * | 2018-08-16 | 2018-12-04 | 昆山汇格精密机械有限公司 | A kind of manipulator automatic bending equipment |
| CN110355245A (en) * | 2019-07-15 | 2019-10-22 | 钱海燕 | A kind of bending machine |
| CN110688793B (en) * | 2019-09-23 | 2022-04-22 | 成都飞机工业（集团）有限责任公司 | Secondary shape correction quality checking method during assembly of aviation elbow based on finite element |
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| CN112828191B (en) * | 2021-01-05 | 2023-02-03 | 国网浙江省电力有限公司丽水供电公司 | Portable lead wire end bending device |
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| JPS6380924A (en) * | 1986-09-24 | 1988-04-11 | Toyota Motor Corp | Bending method for pipe |
| CN201960020U (en) * | 2010-12-02 | 2011-09-07 | 中国一拖集团有限公司 | Pushing-rolling molding mold structure of special-shaped steel pipe |
| CN202316707U (en) * | 2011-11-08 | 2012-07-11 | 中国一拖集团有限公司 | Stretch-bending and push-winding two-layer forming die structure for square steel pipes |
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