Measuring device and method for numerical control rib cold bending machine

Abstract

The invention discloses a measuring method for numeric control frame cold flanging machine that includes following steps: a. the frame to be manufactured is mounted on the manufacturing device, and the three measuring probes of camber measuring mechanism are contacted with the frame to be manufactured, and the one end of the frame to be manufactured is mounted on the scooter, the distance between the first and the second measuring probes are the half of the length of the fixed chord, and the he distance between the second and the third measuring probes are the half of the length of the fixed chord; b. when feeding, the length of the chord L are calculated according to the value measured by the first and the second length coders; c. when bending, the camber H is calculated according to three grafting probes. The easy and reliable measuring method are provided for the piecewise advanceable numeric control frame cold flanging machine, and the accuracy of frame automatic bending forming can be guaranteed.

Description

Technical field: [0001] The invention relates to the field of hull construction technology, in particular to a measuring device and a measuring 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 mechatro...

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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