Precision finishing method of inner spherical surface of high-purity aluminum thin-wall part

Abstract

The invention belongs to the processing technology of a precise component made from special material, and relates to a processing method of a high-purity aluminum precise element. In the invention, the high-purity aluminum thin-wall part is clamped on a spindle of a numerical control machine through a screw sleeve cap and quakeproof improvement so as to achieve the purposes of accurately positioning based on an end surface and simultaneously improving the radial force; reasonable tool structure parameters for cutting the high-purity aluminum material are obtained by early research so as to improve the previous tool; then a reasonable tool setting method is adopted so that the central point of the tool is precisely meshed with the center of a workpiece; and numerically-controlled turning processing is performed. Compared with the previous processing methods, the processing method of the high-purity aluminum precise part provided by the invention can be used for changing the condition that the high quality of surface of a part cannot be obtained before, and overcoming the problems of deformation, vibration, wave, built-up edge and the like in the processing, so that the inner spherical surface of the part reaches the level of a mirror bright surface and the requirements on light reflection are met; and moreover, the processing quality is stable, and the efficiency is high.

Description

technical field [0001] The invention relates to a precision machining method, in particular to a precision machining method for the inner spherical surface of a thin-walled part made of high-purity aluminum. Background technique [0002] High-purity aluminum has low density, high thermal conductivity and electrical conductivity, and high reflectivity to light; there is a thin and dense oxide film on its surface, and the purer the aluminum, the oxide film (Al 2 o 3 Membrane) is also purer, has strong corrosion resistance to the atmosphere, and its protective performance is stronger; there is no low-temperature brittleness, and its strength and plasticity both increase with the decrease of temperature and other excellent properties. Become one of the preferred materials for such functional components. Reflective devices generally require the reflective light path to be conducted according to certain rules. The higher the surface finish on a specific geometric shape, the bett...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is: in order to solve the problems in the prior art that the processing of high-purity aluminum thin-walled parts is difficult and the high surface quality of the inner spherical surface is difficult to meet the requirements, the present invention proposes a method that can effectively locate and install thin-walled soft parts in CNC turning processing. Material parts, to prevent deformation, vibration, chip scratches, built-up edge and other phenomena during processing, and the processing method is convenient to process and can meet the high-quality requirements of the inner surface

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