Device for bending pipe with relatively small abrasion

Abstract

The present invention discloses a device for bending a pipe with relatively small abrasion. The device comprises a stationary work table and a rotary work table capable of rotating; a freely rotating rotary circular bench is disposed between the stationary work table and the rotary work table; a circular pipe is bended by the rotary work table in a rotation direction by using a side wall of the rotary circular bench as a bending point; the stationary work table is provided with a first chuck for clamping the front portion of the circular pipe; the rotary work table is provided with a second chuck for clamping the rear portion of the circular pipe; the first chuck can freely slide in a length direction of the circular pipe; the side wall of the rotary circular bench is provided with an arc-shaped recessed surface; and the central section of the circular pipe is attached to the arc-shaped recessed surface of the side wall of the rotary circular bench. The device is simple in structure and good in bending precision, and abrasion of the circular pipe is small.

Description

technical field [0001] The invention relates to a pipe bending device with less wear. Background technique [0002] Round steel pipe is a commonly used section steel, which is widely used in various fields. The more common ones are construction and industrial fields. At the same time, many household products also use round steel pipes as the skeleton of tables and chairs. In actual use, consider For strength or shape matching problems, this type of steel pipe must be bent. Several issues need to be considered when bending round pipes: 1. Accurate positioning of the bending point. If the bending point deviates greatly, it is easy to cause The problem of large assembly errors or even inability to assemble late-stage products; 2. Springback phenomenon. Many round steel pipes are prone to springback after being bent. There are many stamping bendings. Stamping bending is to use the momentum to quickly bend. When the momentum disappears, the round steel pipe will rebound at a cer...

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Problems solved by technology

[0002] Round steel pipe is a commonly used section steel, which is widely used in various fields. The more common ones are construction and industrial fields. At the same time, many household products also use round steel pipes as the skeleton of tables and chairs. In actual use, consider For strength or shape matching problems, this type of steel pipe must be bent. Several issues need to be considered when bending round pipes: 1. Accurate positioning of the bending point. If the bending point deviates greatly, it is easy to cause The problem of large assembly errors or even inability to assemble late-stage products; 2. Springback phenomenon. Many round steel pipes are prone to springback after being bent. There are many stamping bendings. Stamping bending is to use the momentum to quickly bend. When the momentum disappears, the round steel pipe will rebound at a certain angle due to the self-recovery of its own metal; 3. The round pipe is strained during the bending process. Very obvious, high surface wear

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