Study on the tool setting method of micro-milling tool based on in-line holography

Xianghui Zhang,Zhanjiang Yu,Jinkai Xu,Huadong Yu,J Zhu

doi:10.1051/matecconf/202235503069

Xianghui Zhang, Zhanjiang Yu + Show 3 more

Open Access

https://doi.org/10.1051/matecconf/202235503069

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Abstract

Aiming at the various shortcomings of existing tool setting methods, this paper proposes a coaxial holographic tool setting method for tiny tools. Based on the research and analysis of the principle of holographic imaging and the key issues of holographic images, a set of holographic tool setting detection device for micro milling tool was built, and the micro milling tool measurement was carried out on the five-axis machining center using standard tools. experiment. Experimental results show that the tool setting device can efficiently perform tool setting detection of micro-milling tool. Compared with the measurement results of the high-precision external presetting instrument, the relative error of the contact tool setting instrument is 0.033%, and the relative error of the holographic tool setting prototype is 0.007%, which is more effective in realizing the tool setting of tiny tools. Detection. This result verifies the feasibility of the coaxial holographic tool setting method for micro tool, that is, holographic measurement can be used for high-precision tool setting of micro milling tool.

Highlights

In the micro-milling process, the diameter and length of the micro-milling tool directly affect the structural size of the workpiece to be machined
The repeatable measurement accuracy can reach 1μm, but the diameter measurement range of the tool is still limited; Zhang Yushi of Changchun University of Science and Technology et al [5] proposed a laser diffraction tool setting method for diamond cutters, and the built tool setting prototype can be The detection accuracy of 0.562 μm is achieved. This diffractive tool setting method has not yet been commercialized; the Leader series tool setting instrument developed by Italy M.CONTI company can realize the automatic focus of the part to be measured, and the tool automatic capture and storage of images to determine the position of the tool tip in the measurement coordinate system
Based on the research of digital holographic imaging technology, this paper applies holographic imaging technology to the online tool setting detection of micro-diameter milling tool, and proposes a micro-diameter milling tool setting method based on coaxial holography, and explores the high-precision in-position tool setting detection

Summary

Introduction

In the micro-milling process, the diameter and length of the micro-milling tool directly affect the structural size of the workpiece to be machined. The repeatable measurement accuracy can reach 1μm, but the diameter measurement range of the tool is still limited; Zhang Yushi of Changchun University of Science and Technology et al [5] proposed a laser diffraction tool setting method for diamond cutters, and the built tool setting prototype can be The detection accuracy of 0.562 μm is achieved This diffractive tool setting method has not yet been commercialized; the Leader series tool setting instrument developed by Italy M.CONTI company can realize the automatic focus of the part to be measured, and the tool automatic capture and storage of images to determine the position of the tool tip in the measurement coordinate system. Based on the research of digital holographic imaging technology, this paper applies holographic imaging technology to the online tool setting detection of micro-diameter milling tool, and proposes a micro-diameter milling tool setting method based on coaxial holography, and explores the high-precision in-position tool setting detection

Principle of digital coaxial holographic tool setting

Tool setting system design and experimental verification

Experimental verification

Tool setting accuracy analysis

Conclusion