Rectangular thin walled tube stock tracking deformation bending mould

Abstract

The invention relates to a mould for bending tube stock, in particular to a rectangular thin walled tube stock tracking deformation bending mould. The mould comprises a main bending mould, a follow-up slide block, a clamping jaw and a tracking deformation core mark, wherein the tracking deformation core mark comprises a connecting rod, link plates, pins and core mark bodies, a plurality of link plates are connected together through pins and are arranged in a plurality of the core mark bodies, one end of the connected link plates is connected with the connecting rod through pins, the connecting rod is connected with the mandril oil cylinder of the tube bending machine, the main bending mould is arranged on the main shaft of the tube bending machine through splines, the follow-up slide block and the clamping jaw are arranged above the rectangular thin walled tube stock, and the follow-up slide block and the clamping jaw can be driven by the oil cylinder to press or release the section. The above moulds are combined to be connected with the tube bending machine so as to realize the bending and forming of the rectangular thin walled tube stock. The mould of the invention has the advantage that the tube-bending work precision and work efficiency are high and the cost can be reduce by more than 50%, compared with the traditional tube-bending method by filling sand and heating.

Description

technical field [0001] The invention relates to a mold for bending pipes, in particular to a bending mold for tracking deformation of rectangular thin-walled pipes. Background technique [0002] Workpieces bent by rectangular thin-walled pipes are widely used in shipbuilding, locomotive and rolling stock manufacturing, petroleum, chemical and construction industries. At present, the following methods are used for the production of pipe fittings: [0003] 1. For workpieces with large bending radius and thick pipe wall, they are generally processed on a profile bending machine; [0004] 2. For the workpiece with small bending radius and thick pipe wall, it is generally processed on the pipe bending machine; [0005] 3. For workpieces with small bending radius and thin pipe wall, sand filling and heating are generally used for processing. This process has low processing efficiency and high processing cost. When the precision of the workpiece is not high, it is mostly made on...

AI Technical Summary

Problems solved by technology

[0005] 3. For workpieces with small bending radius and thin pipe wall, sand filling and heating are generally used for processing. This process has low processing efficiency and high processing cost

When the precision of the workpiece is not high, it is mostly made on the pipe bender, and the cross-sectional shape of the workpiece elbow is very likely to appear as figure 1 The phenomenon shown, the bending accuracy is poor

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