CN105057420A - Multi-bending bent pipe precision bending device - Google Patents

Multi-bending bent pipe precision bending device Download PDF

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Publication number
CN105057420A
CN105057420A CN201510363257.8A CN201510363257A CN105057420A CN 105057420 A CN105057420 A CN 105057420A CN 201510363257 A CN201510363257 A CN 201510363257A CN 105057420 A CN105057420 A CN 105057420A
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CN
China
Prior art keywords
bending
angle
die
bend
resilience
Prior art date
Application number
CN201510363257.8A
Other languages
Chinese (zh)
Inventor
王槐春
向田法
向俊
Original Assignee
江苏新恒基特种装备股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏新恒基特种装备股份有限公司 filed Critical 江苏新恒基特种装备股份有限公司
Priority to CN201510363257.8A priority Critical patent/CN105057420A/en
Publication of CN105057420A publication Critical patent/CN105057420A/en

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Abstract

The invention relates to a multi-bending bent pipe precision bending device. The multi-bending bent pipe precision bending device is characterized in that the device comprises a wheel die (1), an inner clamping die (2), an outer clamping die (3), a guiding die (4) and a supporting fixture (5), the inner clamping die (2) is installed on the wheel die (1), the outer clamping die (3) and the inner clamping die (2) are arranged in pair, the guiding die (4) is arranged on the highest point of the wheel die (1), and the supporting fixture (5) is arranged at one side of the guiding die (4); the radius R' of the wheel die (1) is equal to a theoretic radius R with the addition of a springback radius correction value, and a bending angle A' is equal to a theoretic bending angle A with the addition of a springback correction angle. The multi-bending bent pipe precision bending device is simple in structure and easy to implement, when the forming die is designed, the springback deformation of the bent pipe is considered, then the bending radius of the forming die is subjected to springback correction, the problem that the size of the pipe which has bending springback deformation does not accord with the size of the product is solved, the moulding efficiency of the products and the utilization rate of raw materials are improved, and the production benefit of the products is increased.

Description

The accurate bending device of many bend pipe bendings
Technical field
The present invention relates to a kind of swan neck system, especially a kind of elastic modelling quantity according to material and deformation extent, determine the springback capacity of material, by carrying out resilience correction to bent pipe mold, realize the bending radius of bend pipe and bend the numerical controlled bending of pipe device that angle meets product requirement, the specifically accurate bending device of a kind of many bend pipe bendings.
Background technology
Because tube bending process is elastic and plastic deformation process, resilience is there is time bending, causing the problems such as profile angle is little, bending radius is large, pipeline axis is elongated and dihedral angle diminishes, for ensureing the precision that pipe bends, must considering that resilience is on bending the impact caused.When designing bend pipe mould, according to the impact that resilience causes, bend pipe mould being revised, realizing the object of accurate bend pipe.
Summary of the invention
The object of the invention is for current factory when bending small-diameter, thin-walled bend pipe, the resilience problem of the crooked position existed, design a kind of accurate bending device of many bend pipe bendings can revised resilience and impact, it is by revising according to the theoretical size of bend pipe and springback capacity the mould of bend pipe, ensures that the size of the bend pipe bent meets product size required precision.Thus improve shaping efficiency and the utilization rate of raw materials of product, and improve the productivity effect of product.
Technical scheme of the present invention is:
The accurate bending device of a kind of many bend pipe bendings, its feature it comprise wheel mould 1, interior clamping 2, outer clamping 3, guided mode 4 and support fixture 5, described interior clamping 2 is arranged on wheel mould 1, described outer clamping 3 occurs in pairs with interior clamping 2, described guided mode 4 is positioned at the peak place of wheel mould 1, and described support fixture 5 is positioned at the side of guided mode 4; Described radius R ' of taking turns mould 1 is that principal radii R adds Resilience radius correction, and angle of bend A ' adds resilience correction angle for theoretical angle of bend A.
The Resilience radius correction of described wheel mould 1 equals the 5-8% of principal radii.
The resilience correction angle of described angle of bend is by following formulae discovery:
Resilience correction angle Δ C (i) and theoretical angle of bend C 0(i) in once linear relationship, that is:
ΔC(i)=PC 0(i)+F1≤i≤n-2
In formula: P-proportional springback rate,
F-fixing rebound degree;
Adopt experimental technique design factor P, F, concrete grammar is, used CNC tube bending machine does raw material pipe the elbow of two differently curved angles, the actual angle C that record bending machine is bending 1, C 2, and measure corresponding spring back angle Δ 1, Δ 2, the numerical value recorded is substituted into following formulae discovery and goes out P, F.
P = C 1 - C 2 ( C 1 Δ 1 ) - ( C 2 Δ 2 ) - 1
F=C 1-(C 11)·(P+1)。
Beneficial effect of the present invention:
Structure of the present invention is simple, be beneficial to realization, by considering the resilience of bend pipe when being designed to mould, then to the bending radius resilience correction in addition of mould, solve the problem that the size after tube bending resilience and product size are not inconsistent, improve shaping efficiency and the utilization rate of raw materials of product, and improve the productivity effect of product.
Accompanying drawing explanation
Fig. 1 is planar structure schematic diagram of taking turns mould of the present invention.
Fig. 2 is perspective view of taking turns mould of the present invention.
Fig. 3 is the working state schematic representation of swan neck system of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 3.
The accurate bending device of a kind of many bend pipe bendings, comprise wheel mould 1, interior clamping 2, outer clamping 3, guided mode 4 and support fixture 5, described interior clamping 2 is arranged on wheel mould 1, described outer clamping 3 occurs in pairs with interior clamping 2, described guided mode 4 is positioned at the peak place of wheel mould 1, and described support fixture 5 is positioned at the side of guided mode 4; Described radius R ' of taking turns mould 1 is that principal radii R adds Resilience radius correction, this Resilience radius correction equals the 5-8% of principal radii, angle of bend A ' adds resilience correction angle for theoretical angle of bend A, and the resilience correction angle of described angle of bend is by following formulae discovery:
Resilience correction angle Δ C (i) and theoretical angle of bend C 0(i) in once linear relationship, that is:
ΔC(i)=PC 0(i)+F1≤i≤n-2
In formula: P-proportional springback rate,
F-fixing rebound degree;
Adopt experimental technique design factor P, F, concrete grammar is, used CNC tube bending machine does raw material pipe the elbow of two differently curved angles, the actual angle C that record bending machine is bending 1, C 2, and measure corresponding spring back angle Δ 1, Δ 2, the numerical value recorded is substituted into following formulae discovery and goes out P, F.
P = C 1 - C 2 ( C 1 Δ 1 ) - ( C 2 Δ 2 ) - 1
F=C 1-(C 11)·(P+1)。
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.

Claims (3)

1. the accurate bending device of bend pipe bending more than a kind, its feature it comprise wheel mould (1), interior clamping (2), outer clamping (3), guided mode (4) and support fixture (5), described interior clamping (2) is arranged on wheel mould (1), described outer clamping (3) and interior clamping (2) occur in pairs, described guided mode (4) is positioned at the peak place of wheel mould (1), and described support fixture (5) is positioned at the side of guided mode (4); Described radius R ' of taking turns mould (1) is that principal radii R adds Resilience radius correction, and angle of bend A ' adds resilience correction angle for theoretical angle of bend A.
2. the accurate bending device of many bend pipe bendings according to claim 1, is characterized in that the Resilience radius correction of described wheel mould (1) equals the 5-8% of principal radii.
3. the accurate bending device of many bend pipe bendings according to claim 1, is characterized in that the resilience correction angle of described angle of bend is by following formulae discovery:
Resilience correction angle Δ C (i) and theoretical angle of bend C 0(i) in once linear relationship, that is:
ΔC(i)=PC 0(i)+F1≤i≤n-2
In formula: P-proportional springback rate,
F-fixing rebound degree;
Adopt experimental technique design factor P, F, concrete grammar is, used CNC tube bending machine does raw material pipe the elbow of two differently curved angles, the actual angle C that record bending machine is bending 1, C 2, and measure corresponding spring back angle Δ 1, Δ 2, the numerical value recorded is substituted into following formulae discovery and goes out P, F.
F=C 1-(C 11)·(P+1)。
CN201510363257.8A 2015-06-26 2015-06-26 Multi-bending bent pipe precision bending device CN105057420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510363257.8A CN105057420A (en) 2015-06-26 2015-06-26 Multi-bending bent pipe precision bending device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510363257.8A CN105057420A (en) 2015-06-26 2015-06-26 Multi-bending bent pipe precision bending device

Publications (1)

Publication Number Publication Date
CN105057420A true CN105057420A (en) 2015-11-18

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CN201510363257.8A CN105057420A (en) 2015-06-26 2015-06-26 Multi-bending bent pipe precision bending device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106825151A (en) * 2017-03-30 2017-06-13 广东工业大学 A kind of member bending device
CN108246853A (en) * 2017-12-26 2018-07-06 徐州孝科编织有限公司 A kind of tube bending jig of hydraulic numerical control bending machine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87200704U (en) * 1987-01-20 1987-12-26 武汉水运工程学院 Angle direct measuring device for automatic pipe bending
CN1068419A (en) * 1991-07-08 1993-01-27 武汉水运工程学院 Computerized resilience and elongation instrument for bent tubes
JPH08168824A (en) * 1994-12-16 1996-07-02 Matsushiyou:Kk Bending machine for pipe
JPH1015620A (en) * 1996-07-03 1998-01-20 Babcock Hitachi Kk Device for bending thin wall tube
CN201755607U (en) * 2010-07-23 2011-03-09 杭州捷塔科技有限公司 On-line detecting and compensating device used in bend pipe processing
CN102886400A (en) * 2012-10-25 2013-01-23 盈都桥梁钢构工程有限公司 Hot work bending technology for spatial hyperbolic circular tube
CN103264078A (en) * 2013-05-06 2013-08-28 上海飞机制造有限公司 Numerical control brake-pressing method considering springback compensation
CN104368632A (en) * 2013-08-16 2015-02-25 宁波钜智自动化装备有限公司 Curved pipe shape detection system and detection method thereof
CN104438433A (en) * 2014-10-31 2015-03-25 东方电气集团东方锅炉股份有限公司 Manufacture process of thin-wall U-shaped bend pipe with small bending radius
CN204770039U (en) * 2015-06-26 2015-11-18 江苏新恒基特种装备股份有限公司 Accurate curved system device of many winding pipes

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87200704U (en) * 1987-01-20 1987-12-26 武汉水运工程学院 Angle direct measuring device for automatic pipe bending
CN1068419A (en) * 1991-07-08 1993-01-27 武汉水运工程学院 Computerized resilience and elongation instrument for bent tubes
JPH08168824A (en) * 1994-12-16 1996-07-02 Matsushiyou:Kk Bending machine for pipe
JPH1015620A (en) * 1996-07-03 1998-01-20 Babcock Hitachi Kk Device for bending thin wall tube
CN201755607U (en) * 2010-07-23 2011-03-09 杭州捷塔科技有限公司 On-line detecting and compensating device used in bend pipe processing
CN102886400A (en) * 2012-10-25 2013-01-23 盈都桥梁钢构工程有限公司 Hot work bending technology for spatial hyperbolic circular tube
CN103264078A (en) * 2013-05-06 2013-08-28 上海飞机制造有限公司 Numerical control brake-pressing method considering springback compensation
CN104368632A (en) * 2013-08-16 2015-02-25 宁波钜智自动化装备有限公司 Curved pipe shape detection system and detection method thereof
CN104438433A (en) * 2014-10-31 2015-03-25 东方电气集团东方锅炉股份有限公司 Manufacture process of thin-wall U-shaped bend pipe with small bending radius
CN204770039U (en) * 2015-06-26 2015-11-18 江苏新恒基特种装备股份有限公司 Accurate curved system device of many winding pipes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106825151A (en) * 2017-03-30 2017-06-13 广东工业大学 A kind of member bending device
CN108246853A (en) * 2017-12-26 2018-07-06 徐州孝科编织有限公司 A kind of tube bending jig of hydraulic numerical control bending machine

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