Design method of tool for rough machining of aluminum alloys

Abstract

The invention discloses a design method of a tool for rough machining of aluminum alloys. According to the design method, a carbide end mill suitable for the high-speed milling of aluminum alloys is designed on the basis of special machining finite element analysis software Third Wave Advant Edge. The design method comprises the following steps: inspecting the conditions of influences, caused by different rounded cutting edge radii, rake angles and clearance angles, on the parameters such as temperature, cutting force and elastic strain during the milling of the carbide end mill in sequence by adopting an equivalent two-dimensional finite element simulation method and a single-factor optimal design method; and establishing a three-dimensional simulation model on the basis of two-dimensionally simulated and optimized tool parameters to analyze the influences, caused by helical angles, on the milling performance of the carbide end mill so as to select suitable tool parameters. By adopting the design method of the tool for the rough machining of aluminum alloys, the designed carbide end mill is capable of stably machining the aluminum alloy car body profile structures and obtaining relatively high machining quality.

Description

technical field [0001] The invention relates to a tool design method, in particular to an aluminum alloy rough machining tool design method, and belongs to the technical field of computer-aided design. Background technique [0002] With the continuous development of high-speed railway technology, the manufacturing materials of high-speed train bodies have realized the transformation from carbon steel to stainless steel and aluminum alloy materials, especially the aluminum alloy car body has light weight, corrosion resistance, good appearance flatness and easy manufacturing It is widely used due to the advantages of complex curved surfaces. The body of the new generation of high-speed trains adopts high-strength ultra-thin-walled aluminum alloy profiles, generally multi-cavity special-shaped hollow profiles, mainly large and super-long integral structural parts, the length of which is up to 20 meters, the cross-sectional shape is complex, and thin-walled, Features such as ob...

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Problems solved by technology

The cutting force, cutting heat and cutting vibration in the cutting process will easily lead to the deformation of the parts, reduce the processing accuracy and surface quality, and affect the processing efficiency. It is more likely to cause sudden changes in cutting force, cutting heat and cutting vibration during processing, which puts high demands on production equipment, processing tools, and adapted processing technology

At present, CSR Puzhen has introduced foreign advanced high-speed CNC machining centers for high-speed machining of aluminum alloy profiles for car bodies, but there is a lack of relevant high-efficiency machining technology as a guide, and there are certain defects in the selection of cutting tools and processing parameters. big loss problem

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