CN218079992U

CN218079992U - Stretch bending die for extruded Y-shaped material

Info

Publication number: CN218079992U
Application number: CN202222578024.8U
Authority: CN
Inventors: 吕锋; 张建军; 李新意; 黄超强; 周军; 李宇力
Original assignee: Xi'an Western New Zirconium Technology Co ltd
Current assignee: Xi'an Western New Zirconium Technology Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2022-12-20
Anticipated expiration: 2032-09-28

Abstract

The utility model belongs to the technical field of section bar processing, and relates to a stretch bending die for an extruded Y-shaped section bar, which comprises a plurality of inner arc lining plates arranged on a working platform of a stretch bending machine; a plurality of special-shaped steel plates are fixed on the inner arc lining plate, a limiting area for restraining the deformation of the Y-shaped section is reserved between the adjacent special-shaped steel plates, and the profile of each special-shaped steel plate is matched with the corresponding wing plate surface of the Y-shaped section. The die coated with the inner arc section of the titanium alloy Y-shaped material is adopted, so that the problem that the section of the section cannot be constrained in the stretch bending process is solved; by adopting a plurality of special-shaped steel plates and the rolled inner arc lining plate, the problems that Y-shaped materials, especially TC4 titanium alloy Y-shaped materials, have large resilience and the curvature radius cannot be adjusted are solved.

Description

Stretch bending die for extruded Y-shaped material

Technical Field

The utility model belongs to the technical field of the section bar processing, relate to extrusion attitude Y section bar, especially, relate to a stretch bending die for extrusion attitude Y section bar.

Background

As is known in the art, extruded titanium alloy profiles are linear, but are ultimately delivered to the user as an inner arc, so that the profiles must be bent to the desired radius of curvature by subsequent processing and then machined to meet the user's requirements.

In general, straight materials become curved and may be formed by stretch bending, roll bending, hot top bending, and the like. The three technological methods are generally suitable for the internal and external design modeling of large buildings, the design modeling of roads and bridges, the molding of subway boxes and pressure pipelines, such as: angle steel, channel steel, square tubes, rectangular tubes, steel rails, thick-walled circular tubes and the like. Moreover, the pipes are made of conventional materials, such as: q235, Q345, aluminum alloy, 20# low carbon steel and the like. The Q235, Q345 and aluminum alloy are formed by adopting a cold stretch bending and cold roll bending processing technology; the pressure pipeline is formed by stretch bending in a medium-frequency induction heating mode.

The existing titanium alloy section is extruded from TC4 titanium alloy, has high room temperature strength (yield strength is about 850 MPa) and large resilience, far exceeds the yield strength and tensile strength of common steel, and is more than 3 times of the yield strength of the common Q235 material. Because the titanium alloy material of TC4 has large resilience, the method of cold stretch bending and arc lining plate leaning by a conventional stretch bender cannot be realized; in addition, the special-shaped section of the titanium alloy Y-shaped section only adopts an arc lining plate method, three wing plate surfaces of the titanium alloy Y-shaped section are distorted and deformed in the stretch bending process, and the flatness required by the wing plate surfaces cannot be ensured.

In view of this, the utility model provides a with titanium alloy Y section bar inner arc profile coincide, half cladding stretch bending mould of adjustable curvature radius reaches the requirement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a stretch bending die for extruded Y section bar, make the mould profile and the corresponding profile of titanium alloy Y section bar coincide completely to accomplish the whole stretch bending process of titanium alloy Y section bar.

The utility model aims at solving through the following technical scheme:

the stretch bending die for the extruded Y-shaped section comprises a plurality of inner arc lining plates arranged on a working platform of a stretch bending machine, wherein a plurality of special-shaped steel plates are fixed on the inner arc lining plates, and a limiting area for limiting the deformation of the Y-shaped section is reserved between adjacent special-shaped steel plates; the profile of the special-shaped steel plate is matched with the corresponding wing plate surface of the Y-shaped section.

Further, the inner arc lining plate is fixed on the stretch bender working platform through bolts.

Furthermore, the inner arc lining plate is welded and fixed with the connecting thin plate, and the plurality of the special-shaped steel plates are welded on the connecting thin plate at equal intervals along the length direction of the connecting thin plate.

Furthermore, the cross section of the connecting thin plate along the width direction is trapezoidal, and the difference between the lower bottom and the upper bottom of the trapezoid is less than 3mm; by presetting a certain reverse overturning amount, the problem that the wing plate surface with an external arc not restricted warps after the Y-shaped section is subjected to stretch bending and is cooled after a die is detached can be solved.

Furthermore, two ends of the Y-shaped section are respectively clamped and fixed in a chuck body of the stretch bender, and under the action of a stretch bending oil cylinder and a top bending oil cylinder of the stretch bender, after a plurality of special-shaped steel plates completely abut against the cambered surface of the inner arc lining plate, the stretch bending process of the titanium alloy Y-shaped section is completed.

Furthermore, after the stretch bending work is finished, according to the measurement result of each stretch bending, the curvature radius of the inner arc lining plate can be adjusted by using the plate bending machine, and the subsequent Y-shaped section bar can be conveniently used.

Furthermore, the number of the inner arc lining plates is two, and the two inner arc lining plates are symmetrically fixed on a working platform of the stretch bender; by adopting the two-component sectional structure, the time for transferring the die to the inner cambered surface of the Y-shaped section during the stretch bending operation is shortened, and the problem of too fast temperature drop of the material is avoided. It should be noted here that the number of the inner arc lining plates can be determined according to the length of the Y-shaped profile, and preferably, the number of the inner arc lining plates is an even number more than 2, and the even number of the inner arc lining plates are symmetrically fixed on the workbench of the stretch bender.

Compared with the prior art, the utility model provides a technical scheme has following beneficial effect: the problem that the section of the Y-shaped material cannot be restrained in the stretch bending process is solved by adopting the die coated with the inner arc section of the titanium alloy Y-shaped material; the inner arc lining plate is matched with the plurality of special-shaped steel plates, so that the problems that Y-shaped materials, particularly TC4 titanium alloy Y-shaped materials, are large in resilience, the curvature radius cannot be adjusted, and the planeness of three wing plates cannot be guaranteed are solved.

In addition, in consideration of the problem of large TC4 material resilience, a thin plate with a trapezoidal section is welded on the (back) end face of each group of segmented sheet-shaped special-shaped steel plates, and a certain reverse overturning amount is preset to solve the problem that the surface of the wing plate is warped, and the outer arc of the wing plate is not restricted after the Y-shaped section is subjected to stretch bending, a die is removed and the Y-shaped section is cooled.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a structural diagram of the stretch bending die provided by the utility model for placing the Y-shaped material;

FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;

FIG. 3 is a view showing the structure of the present invention with the inner arc lining removed;

fig. 4 is a structural diagram of the stretch bending die provided by the present invention.

Wherein: 1. an inner arc lining plate; 2. connecting the thin plates; 3. a deformed steel plate; 4. and (5) Y-shaped section bars.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the following claims.

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments.

Examples

Referring to fig. 1-4, the utility model provides a stretch bending die for extruded Y-shaped material, which comprises a plurality of inner arc lining plates 1 installed on a working platform of a stretch bender, wherein a plurality of special-shaped steel plates 3 are fixed on the inner arc lining plates 1, and a limit area for restricting the deformation of the Y-shaped material 4 is reserved between the adjacent special-shaped steel plates 3; the profile of the special-shaped steel plate 3 is completely matched with the corresponding wing plate surface of the Y-shaped section 4.

Further, the inner arc lining plate 1 is fixed on a work platform of the stretch bender through bolts.

Further, the inner arc lining plate 1 and the connecting thin plate 2 are welded and fixed, and the plurality of special-shaped steel plates 3 are welded on the connecting thin plate 2 at equal intervals along the length direction of the connecting thin plate 2.

Further, the cross section of the connection sheet 2 in the width direction thereof is trapezoidal, and the lower bottom (L) of the trapezoid is ₁ =6 mm) and upper base (L) ₂ =3 mm) is less than 3mm; by presetting a certain reverse overturning amount, the problem that the wing plate surface with an external arc not restricted warps after the Y-shaped section 4 is subjected to stretch bending and is cooled after a die is removed.

Preferably, the inner arc lining plate 1 is a rolled inner arc lining plate.

Furthermore, the two ends of the Y-shaped section 4 are respectively clamped and fixed in a chuck body of the stretch bender, the Y-shaped section 4 deforms under the action of a stretch bending oil cylinder and a top bending oil cylinder of the stretch bender, the curvature radius of the inner arc lining plate 1 is changed, and when the plurality of special-shaped steel plates 3 completely abut against the arc surface of the inner arc lining plate 1, the stretch bending process of the Y-shaped section 4 is completed.

Preferably, the number of the inner arc lining plates 1 is two, and the two inner arc lining plates 1 are symmetrically fixed on a working platform of the stretch bender; by adopting the two-component sectional structure, the time for transferring the die to the inner arc surface of the Y-shaped section 4 during the stretch bending operation is shortened, and the problem of too fast temperature drop of the material is avoided.

Further, after the stretch bending work is finished, according to the stretch bending measurement result of each time, the curvature radius of the inner arc lining plate 1 can be adjusted by using the plate bending machine, and the subsequent Y-shaped material 4 can be conveniently used.

To sum up, the utility model provides a stretch bending die adopts system inner arc welt and slice combination steel sheet of system of book when carrying out TC4 titanium alloy Y section bar stretch bending, has solved the problem that section bar curvature radius can be adjusted and the unable assurance of three pterygoid lamina plane degree of control. The specific stretch bending process comprises the following steps: firstly, fixing an inner arc lining plate 1 on a working platform of a stretch bender; secondly, respectively placing and clamping two ends of the titanium alloy Y-shaped section in chuck bodies at two ends of a stretch bender; thirdly, heating the titanium alloy Y section to a required temperature; and fourthly, symmetrically placing two groups of profiled steel plate assemblies (two inner arc lining plates 1, wherein each inner arc lining plate 1 is fixedly provided with a plurality of profiled steel plates 3) with profiles on the inner arc surface of the titanium alloy Y-shaped section, which needs to be deformed, so that the profiles of the profiled steel plates 3 are completely matched with the corresponding profiles of the titanium alloy Y-shaped section, and performing the whole stretch bending process of the titanium alloy Y-shaped section.

Before the titanium alloy Y-shaped section is stretch-bent, the curvature radius of the inner arc lining plate 1 can be preset according to the technical requirement of stretch-bending of the titanium alloy Y-shaped section and the mechanical property characteristics of the material. When the titanium alloy Y section needs to be subjected to secondary stretch bending, the curvature radius of the titanium alloy Y section after stretch bending can be adjusted by changing the curvature radius of the inner arc lining plate 1. Therefore, the change of the curvature radius of the titanium alloy Y-shaped section after stretch bending can be realized only by changing the curvature radius of the inner arc lining plate 1 by using a common plate bending machine during each stretch bending, so that the problems of high cost of a stretch bending die and long manufacturing period of the die are solved.

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.

It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A stretch bending die for an extruded Y-shaped material is characterized by comprising a plurality of inner arc lining plates (1) arranged on a working platform of a stretch bending machine; the inner arc lining plate (1) is fixed with a plurality of special-shaped steel plates (3), a limiting area for restraining the deformation of the Y-shaped section (4) is reserved between every two adjacent special-shaped steel plates (3), and the profile of each special-shaped steel plate (3) is matched with the corresponding wing plate surface of the Y-shaped section (4).

2. Stretch-bending mould according to claim 1, characterized in that the inner arc lining plate (1) is fixed on the stretch-bending machine working platform by means of bolts.

3. The stretch bending die according to claim 1, wherein the inner arc lining plate (1) is fixedly welded with the connecting thin plate (2), and a plurality of the profiled steel plates (3) are welded on the connecting thin plate (2) at equal intervals along the length direction of the connecting thin plate (2).

4. Stretch-bending die according to claim 3, wherein the connecting sheet (2) is trapezoidal in cross-section in its width direction.

5. Stretch-bending mould according to claim 1, characterized in that the two ends of the Y-profile (4) are respectively clamped and fixed in a clamping head of the stretch-bending machine.

6. The stretch bending die according to claim 1, wherein the number of the inner arc lining plates (1) is two, and the two inner arc lining plates (1) are symmetrically fixed on a working platform of the stretch bending machine.