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Mounting and clamping device and method applicable to bent pipe welding

A clamping device and pipe bending technology, applied in auxiliary devices, welding equipment, auxiliary welding equipment, etc., can solve the problems of unable to realize rotation, unable to meet the requirements of welding process, unable to meet the requirements of welding, etc., to achieve convenient and flexible adjustment, Highly adaptable and wide-ranging effects

Active Publication Date: 2017-12-01
CAPITAL AEROSPACE MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The circular seam between the flange and the compensator can be clamped by a conventional welding positioner for welding, but the circular seam welding between the compensator and the pipe can not meet the welding requirements if it is clamped by a conventional welding positioner
In addition, when the welding seam is not on the straight line section of the end, the conventional three-jaw chuck mounting method will not be able to realize the rotation of the welding seam of the workpiece around the main shaft of the welding positioner, thus failing to meet the requirements of the welding process

Method used

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  • Mounting and clamping device and method applicable to bent pipe welding
  • Mounting and clamping device and method applicable to bent pipe welding
  • Mounting and clamping device and method applicable to bent pipe welding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] in such as Figure 5 For the catheter shown in , the specification of the catheter tube is Φ110×2.0mm, the length of the straight section at the A end is 400mm, the length of the straight section at the B end is 100mm, and the curved part is a right-angle bend with a bending radius of R200.

[0072] A clamping device suitable for elbow welding, the device mainly includes a rotating disc, a support mechanism, an adapter, a conduit snap ring, bolts and other connecting parts, such as Figure 4 shown.

[0073] The rotating disk is a disk with a diameter of Φ500mm and a thickness of 30mm. On the back of the disk there is a boss with a diameter of Φ50mm and a height of 100mm. The boss is clamped by the three-jaw chuck on the conventional welding positioner to realize the welding of the rotating disk and The installation of the positioner is fixed, and the welding positioner can be started during the welding process to realize that the rotating disc rotates with the main sha...

Embodiment 2

[0088] Such as Image 6 For the conduit shown in , the specification of the conduit pipe is Φ110×2.0mm, the length of the straight section at the A end is 400mm, the curved part is a right-angle bend with a bending radius of R200, and the length of the straight section at the B end is 100mm and is connected in the middle of the flange. 1 compensator, the size of the joint between the compensator and the pipe and the flange is Φ109×1.5mm, and the inner diameter of the joint is the same.

[0089] The clamping device used for elbow welding and clamping is exactly the same as that in Embodiment 1, and the steps of conduit clamping and welding by using the general device for elbow welding and clamping include:

[0090] (1) Prepare a conventional welding positioner, the welding positioner directly clamps the flange at the end A of the conduit to complete the welding of the circular seam between the pipe and the flange, and the welding positioner directly clamps the flange at the B e...

Embodiment 3

[0101] Such as Figure 7 For the conduit shown in , the conduit is welded by pipes at both ends and two flanges. The specifications of the pipes are Φ110×2.0mm. The part is a bend with a bending radius of R200 and a bending angle of 45°; the length of the straight line at the C end of the pipe at the right end is 100mm and the length of the straight line at the D end is 400mm, and the bending part is a bend with a bending radius of R200 and a bending angle of 45° Angle; the connection between the pipe and the pipe is the direct welding of the shorter straight section B and the straight section C, and the weld is not on the straight section at the end of the conduit.

[0102] The clamping device used for elbow welding and clamping is exactly the same as that of Embodiment 1, and the steps of conduit clamping and welding by using the general device for elbow welding and clamping include:

[0103] (1) Prepare a conventional welding positioner, fix the rotating disc on the weldin...

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Abstract

The invention relates to a mounting and clamping device and method applicable to bent pipe welding and belongs to the technical field of bent pipe welding assembling. The mounting and clamping universal device provided by the invention has five degrees of freedom and can be conveniently and flexibly adjusted. The requirements for welding, mounting and clamping of a bent pipe can be met just by adjusting the axis of a welding position of the bent pipe to coincide with the rotation axis of a rotary disk of the device. Thus, the mounting and clamping device has no limitations to the bending angle and the spatial location of the guide pipe and is high in adaptability. The bent pipe mounting and clamping universal device is simple in structure, convenient to machine, low in manufacturing cost and beneficial to application and popularization in the practical production process.

Description

technical field [0001] The invention relates to a clamping device and a clamping method suitable for elbow welding, belonging to the technical field of elbow welding and assembly. Background technique [0002] In aerospace liquid models such as launch vehicles, in order to make reasonable use of the space structure of the rocket body, a large number of bent pipe products are involved in the pipeline of the pressurized delivery system. In terms of materials, it mainly includes aluminum alloy and stainless steel conduits; in terms of diameter specifications, it mainly includes conduits of Φ6-150mm. Among them, most of the bent pipe products involve the welding of pipes and flanges or pipes and joints. At present, manual welding is the main method. [0003] Such as figure 1 As shown, it is a typical elbow product in aerospace liquid models such as launch vehicles. For small-diameter catheters with a diameter in the range of Φ6-30mm, welding can usually be performed by insert...

Claims

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Application Information

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IPC IPC(8): B23K37/04B23K37/047B23K101/06
CPCB23K37/0435B23K37/047B23K2101/06
Inventor 李金全朱艳杰刘景铎隗永庆高云王振张喜李文青项阳
Owner CAPITAL AEROSPACE MACHINERY
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