Automatic hydraulic numerical-control tube bending machine

Abstract

An automatic hydraulic numerical control pipe bending machine, mainly composed of a bed, an industrial computer, a displacement sensor, a Y cylinder, a photoelectric encoder, X, Y servo valves, a hydraulic servo system, an X cylinder, a feeding bracket, a moving wheel, and a fixed roller , It is composed of a roller, a rectangular tube, a lifting bracket, a slide rail, a core holder and a core holder bracket. The successful application of the fully automatic hydraulic CNC pipe bender has greatly reduced the workload of shape correction and the difficulty of quality control of the corresponding assembly in the follow-up process. The position control accuracy and fast dynamics of the Y oil cylinder should be the key to ensure the bending accuracy. The X cylinder of the pipe bending machine adopts hydraulic servo speed control, and the Y cylinder adopts hydraulic servo position closed-loop control, which can meet the processing accuracy requirements of vehicle pipe fittings.

Description

[0001] Technical field [0002] The invention relates to an automatic hydraulic numerical control pipe bending machine, which is suitable for the mechanical field. Background technique [0003] In the past, in the production of arc pipe fittings of the vehicle cab frame and working mechanism, ordinary workers used simple forging machines, hand hammers and other tools to complete the work manually according to the pre-processed template, which was labor-intensive, low in efficiency, and difficult to form batches; arc pipe bends The manufacturing accuracy and processing cycle are greatly affected by its technology and experience, which cannot meet the needs of mass production. Later, a hydraulic profiling pipe bender appeared, but its processing method has disadvantages. The pipe bending curve depends entirely on the mold, which cannot achieve flexible changes in curvature. Moreover, due to the wear and tear of the mold, the mold must be repaired and replaced frequently. What's...

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Problems solved by technology

[0003] In the past, in the production of arc pipe fittings of the vehicle cab frame and working mechanism, ordinary workers used simple forging machines, hand hammers and other tools to complete the work manually according to the pre-processed template, which was labor-intensive, low in efficiency, and difficult to form batches; arc pipe bends Manufacturing accuracy and processing cycle are greatly affected by its technology and experience, which cannot meet the needs of mass production

Later, a hydraulic profiling pipe bending machine appeared, but its processing method has disadvantages. The bending curve of the pipe depends entirely on the mold, and the flexible change of the curvature cannot be realized. Moreover, due to the wear and tear of the mold, the mold must be frequently trimmed and replaced.

What's more serious is that due to the serious difference in the springback of the material, and the springback compensation cannot be realized in the bending process, it is difficult to bend a qualified arc pipe at one time

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