CN104368632B - A kind of tubular detecting system of bend pipe and detection method thereof - Google Patents
A kind of tubular detecting system of bend pipe and detection method thereof Download PDFInfo
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- CN104368632B CN104368632B CN201310359175.7A CN201310359175A CN104368632B CN 104368632 B CN104368632 B CN 104368632B CN 201310359175 A CN201310359175 A CN 201310359175A CN 104368632 B CN104368632 B CN 104368632B
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- 238000001514 detection method Methods 0.000 title claims abstract description 70
- 238000005452 bending Methods 0.000 claims abstract description 42
- 238000012545 processing Methods 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
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- 238000004364 calculation method Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
- 210000002837 heart atrium Anatomy 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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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
- B21D7/12—Bending rods, profiles, or tubes with programme control
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Abstract
The present invention relates to a kind of tubular detecting system of bend pipe and detection method thereof, a kind of tubular detecting system of bend pipe, including CNC tube bending machine, tubular detection device and the control system that detection information is processed, be used for measuring the described tubular detection device of pipe fitting snap-off-distance to be arranged on described CNC tube bending machine, and with the processing pipe fitting on described CNC tube bending machine on same plane；Described tubular detection device is connected with described control system, utilizes geometrical principle to calculate the spring back angle of described pipe fitting；Before and after the present invention utilizes resilience, the distance change between tubular detection device and pipe fitting, record the snap-off-distance of pipe fitting, thus quickly obtain the rebound value of pipe fitting.This invention is online on CNC tube bending machine the most directly detects, it is to avoid the second order error that multiple clamping causes, and convenient and swift, and applicable batch detects, avoid simultaneously pipe fitting multiple curved between the superposition of error, further increase accuracy of detection.
Description
Technical field
The present invention relates to bend pipe manufacture field, particularly relate to a kind of tubular detecting system of bend pipe and detection method thereof.
Background technology
Pipe fitting is extensively applied in each industrial circles such as shipbuilding, automobile, aviation, and many of which has curved shape
Pipe fitting, these pipe fittings must use bending machine or CNC tube bending machine could obtain after tubing is curved processing.Due to pipe
Material bending machining belongs to elasto bending, after bending off-load, rebound phenomenon, specifically, rebound phenomenon inevitably occurs
Refer to during bending pipes, by External Force Acting, be deformed and be bent at an angle, when a curved processing
After end, external force is revoked, and the pipe fitting part being bent reverts to original shape, causes the angle of pipe fitting actual flexion
Less than predetermined angle of bend, and the length of pipe fitting straightway can be larger than required length, therefore the depositing of rebound phenomenon
Having a strong impact on precision and the efficiency that bend pipe produces, when springback capacity exceedes the scope that error is allowed, the geometry of part
Precision and form accuracy are just difficult to meet requirement, thus directly influence serviceability and and the company of miscellaneous part of bend pipe
Connect effect etc..
The factor affecting resilience is a lot, such as: the material of pipe fitting, bending radius, caliber, wall thickness, bent angle size and curved
Technological parameter etc. used by pipe machine, these all can affect the resilience of pipe fitting, and wherein, the technological parameter of bending machine is at bending machine
It has been determined that so typically using " trial-and-error method " constantly to adjust angle of bend, i.e. elder generation is according to predetermined angular bend pipe after adjustment,
Pipe fitting after shaping subsequently takes off and measures, and calculates rebound value according to the deviation between predefined curved angle, then
Carry out springback compensation according to testing result, then it is curved to re-start examination, circulates with this, until the angle of bend approximation etc. of pipe fitting
In design load.And obtaining the accurate rebound value of bend pipe rear tubular member, general way is that the pipe fitting after shaping is from bending machine
It is placed on after unloading on three-coordinates measuring machine and detects, contacted by the gauge head of three coordinates or contactless pipe fitting entered
Row is measured, and goes out the threedimensional model of whole pipe fitting subsequently according to the data convert collected, thus detects and include angle of bend
Each detailed data at interior pipe fitting.But, this detection mode cannot directly detect on swan neck system in real time,
Pipe fitting is unloaded clamping to three-coordinates measuring machine during, easily cause second order error, the most this detection mode
Cost is high, the longest.For solving this problem, technical staff works out tubular measurement system, and this system is by scanning
Mode obtains the tubular data of bend pipe pipe fitting in real time, is modified obtaining rebound data, but the investment of this system device therefor
Greatly, operational data is directly perceived, is not suitable for batch detection, is only suitable for inspecting by random samples trial product, the most inconvenient when therefore using.
Summary of the invention
First to be solved by this invention technical problem is that and provide a kind of simple and practical, the most right for prior art
The tubular tubular detecting system of bend pipe directly detected in real time on swan neck system of bend pipe.
Second to be solved by this invention technical problem is that providing a kind of for prior art applies above-mentioned bend pipe tubular
Detecting system carries out the method for the tubular detection of bend pipe.
The present invention solves the technical scheme that first technical problem used: a kind of tubular detecting system of bend pipe, including number
Control bending machine, tubular detection device and the control system processing detection information, wherein said CNC tube bending machine includes
Frame and head, frame is provided with the feeding trolley being used for fixing, pushing pipe fitting, head is provided with and joins with bending die
The main folder of the tight pipe fitting of co-clip and coordinate the auxiliary folder of clamping pipe fitting with Anti-wrinkling board, it is characterised in that: it is used for measuring pipe fitting resilience
The described tubular detection device of distance is arranged on described CNC tube bending machine, and with the processing pipe fitting on described CNC tube bending machine
On place's same plane；Described tubular detection device is connected with described control system, utilizes geometrical principle to calculate described pipe fitting
Spring back angle.
Described tubular detection device can have multiple implementation, a kind of preferably implementation to be that described tubular detection fills
Being set to the sensor of a measurement distance, also there are multiple choices the position that arranges of this sensor, and as preferably, this sensor is pacified
Being contained in a support means, this support means is arranged in the frame at described head rear.
Further, described support means, by the first Serve Motor Control, remains stationary as during bend pipe and tubular detection,
So that it is guaranteed that the accuracy of detection of sensor mounted thereto.
The another kind of preferred implementation of described tubular detection device is: described tubular detection device include described auxiliary folder and
Being used for controlling the second servomotor of this auxiliary folder action, before and after so being clamped pipe fitting by auxiliary folder and unclamped pipe fitting, second watches
Take the change of Motor torque, the snap-off-distance of pipe fitting can be obtained.
The present invention solves bend pipe shape detection method in the technical scheme that second technical problem is used and comprises the following steps:
1) at the end of bend pipe, described main folder and auxiliary folder still clamp pipe fitting, and described tubular detection device measures it with described
Distance S of pipe fitting1；
2) described feeding trolley unclamps the pipe bundle clip for clamping pipe fitting, and is retracted into the end rear of described pipe fitting, from
And separate with described pipe fitting, unclamp described auxiliary folder, described pipe fitting generation resilience the most again, treat that resilience terminates rear tubular member and is in
During steady statue, described tubular detection device is used to measure distance S of itself and described pipe fitting2；
3) by step 1) and 2) obtain the snap-off-distance a, a=S of described pipe fitting1-S2, and during detection, described
Bending place keeps constant to distance b of described tubular detection device；
4) spring back angle of note pipe fitting is θ, utilizes geometrical principle to calculate spring back angle θ.
Wherein, when tubular detection device uses the first implementation above-mentioned, bend pipe shape detection method comprises the following steps:
1) at the end of bend pipe, described main folder and auxiliary folder still clamp pipe fitting, and described sensor measures itself and described pipe fitting
Distance S1；
2) described feeding trolley unclamps the pipe bundle clip for clamping pipe fitting, and is retracted into the end rear of described pipe fitting, from
And separate with described pipe fitting, unclamp described auxiliary folder, described pipe fitting generation resilience the most again, treat that resilience terminates rear tubular member and is in
During steady statue, described sensor is used to measure distance S of itself and described pipe fitting2；
3) by step 1) and 2) obtain the snap-off-distance a, a=S of described pipe fitting1-S2, and during detection, described
Inflection point keeps constant to distance b of described sensor；
4) spring back angle of note pipe fitting is θ, utilizes described geometrical principle to calculate spring back angle θ.
When using above-mentioned another kind of implementation, bend pipe shape detection method comprises the following steps:
1) at the end of bend pipe, described main folder and auxiliary folder still clamp pipe fitting, and the position of the most auxiliary folder is designated as A1；
2) described auxiliary folder unclamps, and described auxiliary folder retreats and stops to not contacting with described pipe fitting, and the most described second watches
Take the moment of torsion of motor close to 0；Subsequently, described pipe fitting is at the pipeline section generation resilience at rear, bending place, described second servo electricity
The machine described auxiliary folder of control is to described Anti-wrinkling board direction feeding, when being fed at described pipe fitting, owing to being hindered by described pipe fitting
Power, there is to increase change, and gives described control system, institute by the information conveyance of change in the moment of torsion of described second servomotor
Stating control system feedback and make described auxiliary folder feed-disabling, the position of the most auxiliary folder is designated as A2；
3) remember that described auxiliary folder is by described position A1Move to described position A2Distance be A3, the resilience of the most described pipe fitting
Distance a, a=A3；
4) spring back angle of note pipe fitting is θ, utilizes described geometrical principle to calculate spring back angle θ.
Wherein, the position of described auxiliary folder is with any point in its stroke range as home position, according to calculating described second
Home position is contrasted after the rotating signal of the rotation number of turns of servomotor, individual pen stroke and described second servo point motor
Obtain.
In above-mentioned each bend pipe shape detection method, described geometrical principle is: θ=arccos (b2+b2-a2)/2b2。
Compared with prior art, it is an advantage of the current invention that:
1) on-line checking on CNC tube bending machine, it is to avoid the second order error that multiple clamping causes, and convenient and swift, suitable
Close batch to detect: the present invention utilizes the auxiliary folder detection on the sensor or CNC tube bending machine being arranged on CNC tube bending machine
Before and after resilience, the distance change between sensor or auxiliary folder meeting pipe fitting, the rebound value of pipe fitting can be obtained, it is not necessary to by pipe fitting
Unloading rear clamping to measuring instrument, convenient and swift, precision is high, is suitable for pipe fitting is carried out batch detection.
2) avoid pipe fitting multiple curved between the superposition of error, further increase accuracy of detection: in the present invention, at one
After curved detection terminates, feeding trolley feeding certain distance forward, eliminate above bend pipe time pipe fitting straightway be elongated right
The interference that detection produces, carries out bend pipe and the detection of a new round subsequently, owing to each curved detection process is all independent,
It is thus eliminated that the superposition between multiple curved detection errors, improve the precision of detection.
Accompanying drawing explanation
Fig. 1 is overall structure and the bend pipe working state schematic representation of CNC tube bending machine in the present invention；
Fig. 2 is pipe fitting view before bend pipe in the present invention；
Fig. 3 is pipe fitting state after bend pipe and by resilience force effect schematic diagram in the present invention；
Fig. 4 is the installation site schematic diagram of sensor in the embodiment of the present invention 1；
Fig. 5 is springback angle θ Computing Principle schematic diagram in the embodiment of the present invention 1.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment 1:
As shown in Fig. 1～5, a kind of tubular detecting system of bend pipe, including CNC tube bending machine 1, tubular detection device and to inspection
Measurement information carries out the control system (not shown) processed, and in the present embodiment, tubular detection device is the sensing of a measurement distance
Device 11, such as the sensor of laser ranging, this sensor 11 is arranged on CNC tube bending machine 1, and on CNC tube bending machine 1
Processing pipe fitting 8 on same plane, the output of this sensor 11 is connected to the control system processing detection information
The input of system, utilizes geometrical principle to calculate the spring back angle of pipe fitting 8.CNC tube bending machine 1 includes frame 12 and head
10, frame 12 is provided with the feeding trolley 2 being used for fixing, pushing pipe fitting 8, this head 10 is provided with and bend pipe
Mould 7 is matched for clamping tightly the main folder 4 of pipe fitting 8 and coordinates the auxiliary folder 6 of clamping pipe fitting 8 with Anti-wrinkling board 3, feeding trolley 2 with
Being provided with the support means 9 for support tubes 8 in frame 12 between head 10, this support means 9 makes whole
Pipe fitting 8 is in same level height in the course of processing all the time, and in note bend pipe, the bending place of pipe fitting 8 is O point 83, should
O point front is the A section 81 of pipe fitting, and rear is the B section 82 of pipe fitting.
The sensor 11 concrete installation site on CNC tube bending machine 1 can have multiple choices, such as: may be installed A section 81
Near, it is the head 10 of CNC tube bending machine 1 near A section 81, due to rotary oscillation in head 10 operation, installs
Head 10 can affect the precision of sensor 11, and head 10 narrow space, be not easy to install；And for example: can pacify
Being contained in main folder 4, now what sensor 11 was measured is the A section 81 of pipe fitting 8, and A section 81 meeting of bend pipe rear tubular member
There is abnormity change, changed by the distance between normal pipe fitting and the sensor 11 before comparing special piece and resilience,
The result so recorded can produce the biggest error, affects certainty of measurement；And B section 82 bend pipe terminates only overall angle
Deviation on degree, it is therefore preferable that be arranged on sensor 11 in the support means 9 in pipe fitting B section 82 direction.This support
Device 9, by the first Serve Motor Control (not shown), remains stationary as during bend pipe and tubular detection, so that it is guaranteed that
The accuracy of detection of sensor 11 mounted thereto.
Bend pipe tubular detection process is as follows:
When pipe fitting 8 terminates bend pipe, the main folder 4 on head 10 and auxiliary folder 6 still clamping pipe fitting 8, now sensor
11 measure and beeline S of pipe fitting 8B section 821, feeding trolley 2 unclamps for clamping pipe fitting 8 pipe bundle clip subsequently,
Being retracted into the end rear with pipe fitting 8, thus separate with pipe fitting 8, then unclamp auxiliary folder 6, there is resilience in pipe fitting 8,
Until resilience terminate rear tubular member 8 be in steady statue time, then measured and the distance of pipe fitting 8B section 82 ＇ by sensor 11
S2.By comparing the range data of twice, calculate spring back angle and the rebound degree of pipe fitting 8, feed back to control system, from
And in next is curved, bend pipe angle is carried out springback compensation.
Calculation as it is shown in figure 5, first measure before resilience pipe fitting 8B section 82 in the clamp state with sensor 11
Between beeline S1, subsequently after resilience terminates, measure the distance between pipe fitting 8B section 82 ＇ and sensor 11
S2, thus obtain the snap-off-distance a=S1-S2 of pipe fitting 8, pipe fitting 8 is before and after resilience, and O point 83 is surveyed with sensor 11
Distance b between point is to maintain constant, and distance long enough, is far longer than snap-off-distance, constitutes one
Individual base is a, the isosceles triangle of a length of b of waist, and now the θ in figure is the spring back angle of pipe fitting 8.
Then geometrical principle is utilized to obtain the spring back angle θ of pipe fitting 8, such as: according to the cosine law, at known Atria
In the case of bar limit, cos θ=(b can be obtained2+b2-a2)/2b2, therefore spring back angle θ=arccos (b2+b2-a2)/2b2；And for example: cos θ=(b2+b2-a2)/2b2,Therefore spring back angle θ=arctan (sin θ/cos
θ)×180/π.Then the rebound degree ≈ spring back angle/ideal bend pipe angle of pipe fitting 8 is obtained further according to this spring back angle,
Make system carry out springback compensation according to the rebound degree of this pipe fitting 8 man-hour in next curved adding, revise tubular.In the present invention
Geometrical principle be not limited to the optimal way that provides in the present embodiment, other carry out several according to the optimal way of the present embodiment
The deformation of what principle is the most within the scope of the present invention.
Embodiment 2:
As shown in Figures 1 to 3, as different from Example 1, the tubular detection device in embodiment 2 include auxiliary folder 6 and
Being used for controlling the second servomotor 5 of this auxiliary folder 6 action, the auxiliary folder 6 and second i.e. directly utilizing CNC tube bending machine 1 is watched
Take motor 5 as a kind of sensor of distance of measuring to detect the snap-off-distance of pipe fitting 8, the output of the second servomotor 5
It is connected to the input to the control system that detection information processes, the output of control system simultaneously and the second servomotor 5
Input be connected, detection information is fed back thus controls the action of auxiliary folder 6 by the second servomotor 5, its principle is:
The auxiliary folder 6 of CNC tube bending machine 1 is to be controlled it by the second servomotor 5 to move on clamp arm auxiliary pushing away, and the most auxiliary folder 6 is subject to
Power, the moment of torsion of the second servomotor 5 of its correspondence will increase.
Utilizing this principle, the detecting step of embodiment 2 is as follows: first main folder 4 and auxiliary folder 6 still clamping pipe fitting 8,
The position of the most auxiliary folder 6 is designated as A1.Then, auxiliary folder 6 is unclamped so that it is retreat and just stop after not coming in contact with pipe fitting 8
Only, at this time the moment of torsion of the second servomotor 5 is close to 0, and the most now the moment of torsion of the second servomotor 5 is 0,
But during actual operation frictional force, affected, therefore by factors such as auxiliary folder 6 and the second gravity of servomotor 5 own
Now the moment of torsion of the second servomotor 5 is close to 0.Meanwhile, there is resilience in the B section 82 of pipe fitting 8, treats pipe fitting 8
After resilience completes, the second servomotor 5 controls auxiliary folder 6 to Anti-wrinkling board 3 direction feeding, touches the pipe fitting after resilience 8
Time, due to the resistance by pipe fitting 8, the moment of torsion of the second servomotor 5 increases, and the information of change is transferred to rapidly
Control system, control system sends feedback information and gives auxiliary folder 6 feed-disabling immediately, and the position of the most auxiliary folder 6 is designated as
A2, the position of auxiliary folder is with A1For home position, according to calculate the rotation number of turns of the second servomotor 5, individual pen stroke with
And second servomotor 5 rotating signal after contrast position A1Obtain.Again by relatively auxiliary folder 6 at clamping pipe fitting 8
Time contact relative distance under pipe fitting 8 latter two state of jerk with second time and changes, the most auxiliary folder is by position A1Move into place
Put A2Distance be A3, so that it may draw the snap-off-distance a, a=A of pipe fitting 83.Next spring back angle calculating, return
The principles such as the calculating of bullet rate are similar to Example 1, do not repeat them here.
Claims (10)
1. the tubular detecting system of bend pipe, including CNC tube bending machine, tubular detection device and to detection information at
The control system of reason, wherein said CNC tube bending machine includes frame and head, frame is provided with and is used for fixing, pushes pipe
The feeding trolley of part, head is provided with and is matched for clamping tightly the main folder of pipe fitting with bending die and coordinates clamping pipe fitting with Anti-wrinkling board
Auxiliary folder, the frame between described feeding trolley and head is provided with the support means for support tubes, this support fills
Put so that whole pipe fitting is in same level height in the course of processing all the time, it is characterised in that: it is used for measuring pipe fitting resilience
The described tubular detection device of distance is arranged on described CNC tube bending machine, and with the processing pipe fitting on described CNC tube bending machine
On place's same plane；Described tubular detection device is connected with described control system, utilizes geometrical principle to calculate described pipe fitting
Spring back angle.
The tubular detecting system of bend pipe the most according to claim 1, it is characterised in that: described tubular detection device is
One sensor measuring distance, this sensor is arranged in a support means, after described support means is arranged on described head
In the frame of side.
The tubular detecting system of bend pipe the most according to claim 2, it is characterised in that: described support means is by first
Serve Motor Control, remains stationary as during bend pipe and tubular detection.
The tubular detecting system of bend pipe the most according to claim 1, it is characterised in that: described tubular detection device bag
Include described auxiliary folder and for controlling the second servomotor of this auxiliary folder action.
5. utilizing a bend pipe shape detection method for the tubular detecting system of the bend pipe described in claim 1, its feature exists
In: comprise the following steps:
1) at the end of bend pipe, described main folder and auxiliary folder still clamp pipe fitting, and described tubular detection device measures it with described
Distance S of pipe fitting1；
2) described feeding trolley unclamps the pipe bundle clip for clamping pipe fitting, and is retracted into the end rear of described pipe fitting, from
And separate with described pipe fitting, unclamp described auxiliary folder, described pipe fitting generation resilience the most again, treat that resilience terminates rear tubular member and is in
During steady statue, described tubular detection device is used to measure distance S of itself and described pipe fitting2；
3) by step 1) and 2) obtain the snap-off-distance a, a=S of described pipe fitting1-S2, and during detection, pipe fitting
Bending place to described tubular detection device distance b keep constant；
4) spring back angle of note pipe fitting is θ, utilizes geometrical principle to calculate spring back angle θ.
6. utilizing a bend pipe shape detection method for the tubular detecting system of the bend pipe described in claim 2 or 3, it is special
Levy and be: comprise the following steps:
1) at the end of bend pipe, described main folder and auxiliary folder still clamp pipe fitting, and described sensor measures itself and described pipe fitting
Distance S1；
2) described feeding trolley unclamps the pipe bundle clip for clamping pipe fitting, and is retracted into the end rear of described pipe fitting, from
And separate with described pipe fitting, unclamp described auxiliary folder, described pipe fitting generation resilience the most again, treat that resilience terminates rear tubular member and is in
During steady statue, described sensor is used to measure distance S of itself and described pipe fitting2；
3) by step 1) and 2) obtain the snap-off-distance a, a=S of described pipe fitting1-S2, and during detection, pipe fitting
Bending place to described sensor distance b keep constant；
4) spring back angle of note pipe fitting is θ, utilizes described geometrical principle to calculate spring back angle θ.
7. utilizing a bend pipe shape detection method for the tubular detecting system of the bend pipe described in claim 4, its feature exists
In: comprise the following steps:
1) at the end of bend pipe, described main folder and auxiliary folder still clamp pipe fitting, and the position of the most auxiliary folder is designated as A1；
2) described auxiliary folder unclamps, and described auxiliary folder retreats and just stops, the most described second to not contacting with described pipe fitting
The moment of torsion of servomotor is close to 0；Subsequently, described pipe fitting is in the pipeline section generation resilience at rear, bending place, and described second watches
Take motor control described auxiliary folder to described Anti-wrinkling board direction feeding, be fed into contact described pipe fitting at time, due to by described
The resistance of pipe fitting, there is to increase change, and gives described control by the information conveyance of change in the moment of torsion of described second servomotor
System, described control system feedback and make described auxiliary folder feed-disabling, the position of the most auxiliary folder is designated as A2；
3) remember that described auxiliary folder is by described position A1Move to described position A2Distance be A3, the resilience of the most described pipe fitting
Distance a, a=A3；
4) spring back angle of note pipe fitting is θ, utilizes described geometrical principle to calculate spring back angle θ.
Bend pipe shape detection method the most according to claim 7, it is characterised in that: the position of described auxiliary folder be with
Any point in its stroke range is home position, according to calculating the rotation number of turns of described second servomotor, individual pen stroke
And contrast home position after the rotating signal of described second servomotor and obtain.
9. according to the bend pipe shape detection method described in claim 5 or 7, it is characterised in that: described geometrical principle is:
θ=arccos (b2+b2-a2)/2b2。
Bend pipe shape detection method the most according to claim 6, it is characterised in that: described geometrical principle is: θ
=arccos (b2+b2-a2)/2b2。
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| CN201310359175.7A CN104368632B (en) | 2013-08-16 | 2013-08-16 | A kind of tubular detecting system of bend pipe and detection method thereof |
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| CN201310359175.7A CN104368632B (en) | 2013-08-16 | 2013-08-16 | A kind of tubular detecting system of bend pipe and detection method thereof |
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| CN105057420A (en) * | 2015-06-26 | 2015-11-18 | 江苏新恒基特种装备股份有限公司 | Multi-bending bent pipe precision bending device |
| CN105032998A (en) * | 2015-08-25 | 2015-11-11 | 南京工程学院 | Pipe bending forming control system and method based on tail-end size control |
| CN107008786B (en) * | 2017-03-21 | 2019-01-01 | 南京航空航天大学 | The free forming dynamic optimization method of three-dimensional bending tube head and the tail geometry exact position |
| CN109141335B (en) * | 2018-10-11 | 2024-06-18 | 浙江工业大学之江学院 | Quick detection device for space continuous bent pipe |
| CN110076241B (en) * | 2019-03-05 | 2020-09-22 | 台州市楷毅通信技术有限公司 | Bending resilience intelligent compensation device, progressive die and bending resilience compensation method |
| CN110293159B (en) * | 2019-05-28 | 2022-03-18 | 南通金燃机械制造有限公司 | Directional auxiliary pushing pipe bending mechanism for pipe bending machine |
| CN110560529A (en) * | 2019-09-10 | 2019-12-13 | 广东职业技术学院 | Method and system for machining bent pipe by applying polar coordinate method |
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| CN111389981B (en) * | 2020-03-30 | 2021-02-26 | 燕山大学 | Elbow angle control device |
| CN111426748B (en) * | 2020-05-28 | 2023-03-31 | 洛阳欣隆工程检测有限公司 | Full-automatic eddy current flaw detector for pipes |
| CN112893553B (en) * | 2021-01-15 | 2023-03-17 | 繁昌县华特机械制造有限公司 | Double-layer capillary tube bending device and method for removing residual stress by vibration |
| CN113624594A (en) * | 2021-07-08 | 2021-11-09 | 闫化玺 | Pipe fitting bending degree detection device that shocks resistance for automobile production can improve precision |
| CN115318894B (en) * | 2022-10-13 | 2023-03-24 | 江苏新恒基特种装备股份有限公司 | Large R bent pipe forming monitoring system and method |
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| CN102205362A (en) * | 2011-03-22 | 2011-10-05 | 佛山市顺德区燉煌五金塑料实业有限公司 | Automatic pipe bender with mistake prevention function |
| CN103028640A (en) * | 2012-12-18 | 2013-04-10 | 宁波钜智自动化装备有限公司 | Pipe bending machine and method for carrying out real-time detection on same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AT412071B (en) * | 2001-08-17 | 2004-09-27 | Trumpf Maschinen Austria Gmbh | PRODUCTION DEVICE, IN PARTICULAR BENDING PRESS, AND METHOD FOR OPERATING A PRODUCTION DEVICE |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068419A (en) * | 1991-07-08 | 1993-01-27 | 武汉水运工程学院 | Computerized resilience and elongation instrument for bent tubes |
| CN102205362A (en) * | 2011-03-22 | 2011-10-05 | 佛山市顺德区燉煌五金塑料实业有限公司 | Automatic pipe bender with mistake prevention function |
| CN103028640A (en) * | 2012-12-18 | 2013-04-10 | 宁波钜智自动化装备有限公司 | Pipe bending machine and method for carrying out real-time detection on same |
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