Adaptive Drilling Method Based on Simple Harmonic Vibration Chip Breaking

Abstract

An experimental platform for composite / alloy laminated layer automatic drilling equipment includes monitoring feedback system, a simple harmonic vibration drilling system and a parameter database system. According to the movement condition of a main cutting edge of a drill point, the simple harmonic vibration drilling system establishes a relational graph between the track of the cutting edge andthe thickness of a cutting layer in the processing process, and according to the motion trail of the cutting edge, the real-time cutting layer thickness can be obtained and a feeding-direction cuttingthickness model is obtained at the time of simple harmonic vibration drilling. The model is used for processing a CFRP / Ti laminated layer, performing active simple harmonic vibration chip breaking simulation and outputting a standby processing parameter to the parameter database system, and according to the built-in real-time measured processing parameter and the standby processing parameter, theparameter database system outputs the optimum processing parameter under the matching condition by collecting load power / current data of a servo motor and a motorized spindle in real time. The methodsolves a textual picture of serious damage of titanium alloy chips processed by the CFRP / Ti laminated layer to the pore wall of a CFRP layer, the processing quality is significantly improved, and the method has a very meaningful reference value for processing of a metal laminated layer similar to a composite.

Description

technical field [0001] The present invention relates to a technology in the field of mechanical processing, specifically identifying the change of the drilled material through a certain discriminant algorithm, and automatically changing the drilling processing parameters based on the cutting edge trajectory and the cutting layer thickness curve of the material, so as to realize CFRP / A Machining Method for Stable Chip Breaking During Ti Stack Drilling. Background technique [0002] In the field of aviation industry, C / A laminated members are usually used as load-bearing members. When drilling CFRP / Ti laminated materials, continuous strips of titanium alloy chips will cause serious damage to the hole wall of the CFRP layer. It is difficult to guarantee, and a reasonable chip breaking process is an effective means to solve this problem. In foreign countries, there are already similar automatic feed drilling equipment with embedded low-frequency vibration drilling devices, suc...

AI Technical Summary

Problems solved by technology

However, this type of equipment can only provide one parameter for one-time processing, which is only suitable for single-material drilling, and the parameters need to be changed multiple times for stacked drilling

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