A general on-machine non-contact calibration method for milling cutter eccentricity parameters

A calibration method, non-contact technology, applied in metal processing machinery parts, metal processing equipment, measuring/indicating equipment, etc., can solve the limitations of analysis methods and means, difficult quantitative evaluation of tool eccentric state, unfavorable high-precision CNC milling processing and other problems, to achieve the effect of convenient operation of the instrument, high measurement accuracy, and elimination of cutting vibration
CN111618657BActive Publication Date: 2021-04-27XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2021-04-27

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Abstract

A universal on-machine non-contact calibration method for milling cutter eccentricity parameters. Firstly, a mathematical model representing the general geometric parameters of integral milling cutters and machine-clamp milling cutters is established, and then the tool rotation axis deflection, geometric axis deflection, and end edge eccentricity are used. 3 states and 7 independent parameters to quantitatively describe the eccentric state of the tool, and use the eddy current sensor to measure the target distance of the tool tooth section installed on the spindle of the machine tool non-contact, to obtain the different The change of the actual cutting radius of the cutting point at different axial heights of the blade, and then combined with the numerical optimization method, the tool eccentricity parameters (including the geometric axis deflection of the tool side edge, the deflection of the side edge rotation axis and the end Calibration of edge eccentricity). This method has good versatility and accuracy, and can realize rapid and accurate calibration of the tool eccentric state on the machine, which is convenient for use in the processing site of the enterprise.
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Description

technical field

[0001] The invention belongs to the technical field of high-precision numerical control milling, and in particular relates to a universal on-machine non-contact calibration method for milling cutter eccentricity parameters. Background technique

[0002] Tool eccentricity, as a disturbing factor in the milling process, has become one of the main unfavorable factors affecting processing efficiency and quality. The phenomenon of tool eccentricity is very common in the process of machine tool processing. The main reasons for its occurrence are the non-ideal installation state of the spindle-tool holder-tool, the geometric error of the axis of the spindle system, the manufacturing error of the tool itself, and the wear of the cutting edge caused by the cutting process. , The flexible vibration characteristics of the spindle system during operation and other factors are caused. At present, with the continuous improvement of processing quality and efficiency requir...

Claims

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