Machining apparatus for digital control rib cold bending machining and products produced thereby

Abstract

The invention discloses a machining method used for digital control frame cool bender, its characteristics is that it includes the following steps : A, dividing the to be processing frame curve using the constant chord length from the start point of frame machining; B, calculating the chord length Li between start point and each dividing points; C, for the frame curve divided by chord length, calculating the corresponding circular arc camber Hi at the half of the constant chord length; D, for each frame curves, calculating a group of {Li,Hi} data; E, making one group of {Li,Hi} data as the machining controlling quantity when the digital control frame cool Bender operates automatically, the Li is goal feed amount and the Hi is goal camber. The invention also discloses the machining device for realizing the processing method. The advantages of the invention are it gives the piecewise advanceable digital control frame cool bender a simple and reliable measurement method to ensuring the accuracy of frame automatic bending and shaping.

Description

Technical field: [0001] The invention relates to the field of hull construction technology, in particular to a processing device and a processing method for a numerically controlled rib cold bending machine. Background technique: [0002] When the existing hull rib cold bending machine processes the hull ribs, the chord measurement method is usually used, which is to use a steel wire to simultaneously measure the feed length Li when the cold bender is working and the angle θi of the chord line during bending. Because in the actual rib bending, the most sensitive part of the rib when it undergoes elastic and plastic deformation is the arch height of the bending arc, but the chord line measurement cannot measure the deformation of this section, so overbending often occurs during the bending process, and Once bending occurs, it will affect the forming quality and forming accuracy of the line shape, and reduce the production efficiency. With the continuous development of mechat...

AI Technical Summary

Problems solved by technology

Because in the actual rib bending, the most sensitive part of the rib when it undergoes elastic and plastic deformation is the arch height of the bending arc, but the chord line measurement cannot measure the deformation of this section, so overbending often occurs during the bending process. Once bending occurs, it will affect the forming quality and forming accuracy of the line shape, and reduce the production efficiency

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