Device and method for preventing abnormal rotation of pipe in free bending forming process
A technology for bending and forming pipes, which is applied in the field of devices for preventing abnormal rotation of pipes. It can solve problems such as abnormal rotation of pipes, large bending angles, and obstruction of free rotation of pipes, so as to expand the application range and improve the forming quality.
Active Publication Date: 2022-04-29
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0005] Aiming at the deficiencies of the existing three-dimensional free bending forming technology, the present invention proposes a device and method for preventing abnormal rotation of the pipe during the free bending forming process, thereby realizing a propulsion method for preventing abnormal rotation of the pipe during the bending process
The invention is mainly used to solve the problem that the three-dimensional free bending forming technology is used to form components with continuous multiple bends and large bending angles. Due to the continuous change of the bending direction, the rotational torque caused by the bending mold to the bending section of the pipe will cause the pipe to rotate abnormally. problems; or when interference requires frequent active deflection to avoid interference operations, the free rotation of the pipe is blocked, thereby improving the bending forming efficiency and forming quality
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[0028] The present invention will be described in detail below in conjunction with specific embodiments.
[0029] refer to Figure 1-4 , the device for preventing the abnormal rotation of the pipe during the free bending forming process, including the anti-rotation block 6, the anti-rotation block 6 is arranged between the push rod 7 and the pipe material 5, and the compression spring is passed between the tail of the anti-rotation block 6 and the push rod 7 10 connection, the end of the anti-rotation block 6 and the end of the push rod 7 are all provided with an annular groove capable of accommodating the compression spring 10, and the two ends of the compression spring 10 are respectively placed on the ring of the anti-rotation block 6 tail end and the push rod 7 In the groove, the anti-rotation block 6 is a cylindrical structure, and a guide column 11 is arranged at the central axis of the cylinder. One end of the guide column is fixed on the anti-rotation block 6, and the ...
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The invention discloses a device and method for preventing abnormal rotation of a pipe in the free bending forming process, the device comprises an anti-rotation block, the anti-rotation block is arranged between a push rod and the pipe, and the tail of the anti-rotation block is connected with the push rod through a compression spring; the tail end face of the anti-rotation block and the front end face of the push rod are provided with fan-shaped meshing tooth anti-rotation structures, and when the tail end face of the anti-rotation block and the front end face of the push rod are pressed together, the anti-rotation block and the push rod cannot rotate relatively. Anti-rotation teeth are arranged on the front end face of the anti-rotation block and act on the tail end face of the pipe, and relative rotation between the anti-rotation block and the pipe can be prevented. According to the device and the method provided by the invention, the motion control of the propelling mechanism and the structural design of the propelling device are combined, excessive damage to the pipe is avoided, the implementation and the release operation of the anti-rotation operation are flexible, and the implementation is stronger.
Description
technical field [0001] The invention relates to three-dimensional free bending forming technology, in particular to a device and method for preventing abnormal rotation of pipes during free bending forming. Background technique [0002] Three-dimensional free bending forming is a new type of flexible bending forming technology for pipes, which can be used for bending forming of pipes with different closed section profiles and complex spatial axes. as attached figure 1 As shown, this technology changes the spatial position and movement posture of the bending die 2 by controlling the movement of the spherical bearing 1 on the X-Y plane, and at the same time cooperates with the feeding movement of the pushing device 8 in the Z direction to realize three-dimensional bending of the pipe 5 . Because corresponding to the same pipe material, there is no need to constantly change the mold structure in order to adapt to the change of the bending radius, so it can realize the one-time...
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IPC IPC(8): B21D7/08B21D7/16
CPCB21D7/085B21D7/16
Inventor 陶杰张浩郭训忠程诚
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS