Device and method for supporting large thin-walled parts

Abstract

A supporting device and method for large thin-walled parts, which belong to the technical field of precision machining support. The supporting device for large thin-walled parts includes a processing device and a supporting device. The workpiece is located in the middle of the processing device and the supporting device, and its periphery is clamped by flexible clamping. The tool in the processing device is connected to the iron core, and the coil is wound on the iron core. When the coil is energized, a magnetic field is generated around the coil, and the cutting edge of the tool contacts the processing side of the workpiece. The support method adopts the combination of magnetorheological fluid technology and jet support technology, and uses the impact force of jet to offset part of the milling force; by changing the coil current and the way of winding, the magnetic field strength is controlled, and the magnetorheological fluid is solidified instantly, and the workpiece support. The invention adopts the magnetorheological fluid, has fast response speed and controllable supporting force, can realize flexible follow-up support for workpieces, prevents flutter during processing, and meanwhile, the magnetorheological fluid can be recycled for recycling.

Description

technical field [0001] The invention belongs to the technical field of precision machining support, and relates to a support device and method for a large thin-walled part. Background technique [0002] Large thin-walled parts adopt an integral structure, which reduces the assembly process of parts, has good sealing performance, high fatigue resistance of the structure, can maintain the integrity of the surface, and has a high material removal rate. It is widely used in aerospace and other fields. However, large thin-walled parts are not only large in size, low in stiffness, and easy to deform, but also complex in shape, require high precision, and are difficult to manufacture. [0003] At present, the mirror image milling technology using the mirror support head to support the workpiece is an effective method to realize the processing of large thin-walled parts. The method uses two synchronized five-axis horizontal machine tools, one as a processing head for milling the wo...

AI Technical Summary

Problems solved by technology

In addition, the magnetorheological fluid in the extrusion mode will undergo elastic deformation in the initial stage of the magnetic particle chain, resulting in a certain deformation, which will affect the processing accuracy of the part, and the magnetic fluid has a certain yield strength. If the milling force is too large, the solidified area Smaller, may exceed the yield strength of the magnetic fluid, and cannot effectively support the workpiece

Images