Hole diameter error modified compensation method based on screw milling hole

Abstract

Disclosed is a hole diameter error modified compensation method based on a screw milling hole. The hole diameter error modified compensation method comprises the steps of establishing a standard hole three-dimensional model for an assembly hole, selecting a machining tool, setting processing parameters, trial-manufacturing an assembly hole, detecting the aperture of the assembly hole, establishing a trial-manufacturing hole three-dimensional model according to the aperture detection result, comparing the trial-manufacturing hole three-dimensional model with the standard hole three-dimensional model, determining a hole diameter error of the assembly hole at different positions, setting compensation dosage according to the hole diameter error, synchronously modifying the eccentricity of the tool axis and the assembly hole axis in the processing parameters according to the compensation dosage, trial-manufacturing an assembly hole again under the modified processing parameters, establishing another trial-manufacturing hole three-dimensional model according to the aperture detection result, comparing the trial-manufacturing hole three-dimensional model with the standard hole three-dimensional model, and determining whether the aperture of the assembly hole at different positions meets the accuracy requirements or not, when the aperture meets the accuracy requirements, starting the formal manufacturing hole process of the assembly hole, otherwise, repeatedly adjusting the compensation dosage and synchronously modifying the processing parameters until the aperture meets the accuracy requirements.

Description

technical field [0001] The invention belongs to the technical field of helical milling hole-making processing, and in particular relates to an aperture error correction and compensation method based on helical milling hole-making. Background technique [0002] At present, laminated materials made of carbon fiber composite materials and titanium alloys have been increasingly used in various modern aerospace vehicles. Maintenance costs have a positive effect. [0003] The laminated material is mainly assembled and connected to the carbon fiber composite material layer and the titanium alloy layer through bolts or rivets. Therefore, in the process of manufacturing the laminated material, a large number of assembly holes need to be processed on the carbon fiber composite material layer and the titanium alloy layer. In order to ensure the machining efficiency of the assembly holes, the integrated hole machining method is usually adopted, that is, the same tool and the same cutti...

AI Technical Summary

Problems solved by technology

However, during the actual helical milling hole-making process, the technicians found that since the tool diameter is smaller than the diameter of the assembly hole, the tool will bear a large radial force during the helical milling hole-making process, which will cause the tool to be damaged when processing the titanium alloy layer. There will be radial deformation that cannot be ignored, so that the processed assembly hole will have a large hole diameter error, such as figure 2 shown

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