Flexible expansion shaping device for curved parts

Abstract

The invention discloses a flexible expansion shaping device for curved parts, which is a flexible processing device for shaping large-sized three-dimensional curved parts in an expanding way. The device mainly comprises a machine body framework, an expansion shaping platform, a pre-stretching and clamping mechanism and a reconfigurable multi-point die, wherein expansion shaping is implemented by pushing the reconfigurable multi-point die (7) positioned on an upward and downward movable platform (12) towards a pre-stretched plate upwards through a main thrust hydraulic cylinder (10); pre-stretching and edge pulling are implemented by driving stretching clamps (5) positioned on left-handed and right-handed screws (4) to move synchronously and oppositely in a way of synchronously driving front and back left-handed and right-handed lead screws (6) through a servo motor (1); and the stretching clamps (5) consist of odd-number clamps, and the clamping force is controlled through clamping hydraulic cylinders (8). The reconfigurable multi-point die and an uplifting expansion shaping device are integrated together, so that curved parts of multiple different geometrical shapes can be shaped by using one set of expansion shaping device, and the manufacturing cost is low.

Description

Technical field: [0001] The invention applies a reconfigurable multi-point mould, uses a hydraulic cylinder to realize the stretch forming of three-dimensional curved surface parts, and belongs to the field of metal plastic processing. Background technique: [0002] Aluminum alloy and titanium alloy three-dimensional curved surface parts are widely used in many fields of production and life, such as aircraft skins, EMU outer panels, high-quality automobiles, and modern buildings. At present, the commonly used forming process is to use molds to perform curved surface stretching on a stretch forming machine. With this forming method, there are many types and quantities of stretching dies, and the manufacturing cycle is long. Therefore, the manufacture and storage of molds has become one of the difficult problems in the forming of curved surface parts; on the other hand, the drawing machine is the main equipment used. At present, the drawing machines used by various domestic pr...

AI Technical Summary

Problems solved by technology

However, the multi-point mold is a set of electromechanical integration equipment, which is difficult to install and disassemble on the traditional stretching machine; and when forming different three-dimensional curved surface parts, the required mold heights are different, and the height needs to be adjusted with tooling, which is difficult to operate; the invention designs A flexible expansion and stretching forming device for curved surface parts. The multi-point mold is installed on the up and down moving working platform, and the working platform is driven by the main hydraulic cylinder.

Before stretching, the height can be adjusted conveniently according to the different geometric shapes of the target parts, and the parts are easy to clamp; during the stretching forming process, the main hydraulic cylinder provides the stretching power to realize the workpiece forming; the reconfigurable multi-point mold can be used according to the different target parts Adjust the shape to achieve flexible forming. A set of main hydraulic cylinders can realize stretching and stretching, which reduces the cost of stretching equipment. There is no relevant patent report for this device

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