Cutter flank width wear rate calculation method

By combining Johnson-Cook constitutive model and Hertz contact theory, considering the impact of temperature on hardness, finite element simulation is used to calculate the tool wear rate, which solves the problem of difficulty in accurately predicting the wear rate of PCD milling cutters in the prior art, and realizes the accurate prediction of the tool wear rate during aluminum-based silicon carbide processing.

CN119989562APending Publication Date: 2025-05-13CENT CHINA OPTOELECTRONICS TECH RES INST (CHINA STATE SHIPBUILDING CORP 717TH RES INST)
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Patent Information

Application Number
CN202411959938.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-05-13

AI Technical Summary

Technical Problem

The existing wear rate calculation method is difficult to accurately predict the wear of PCD milling cutters when processing aluminum-based silicon carbide, especially failing to effectively consider the impact of temperature on hard point wear and bond wear.

Method used

The Johnson-Cook constitutive model is used to describe the thermal-viscoplastic relationship of materials, the tool surface contact stress is calculated based on the Hertz contact theory, and the tool wear rate is calculated through finite element simulation software, taking into account the dynamic influence of temperature on the tool surface hardness.

Benefits of technology

Accurate prediction of the wear rate of PCD milling cutters during aluminum-based silicon carbide processing is achieved, and the tool service life and processing quality during processing is improved.

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Abstract

The invention discloses a cutter flank width wear rate calculation method, which comprises the following steps of: firstly, describing a thermal-viscoplastic relationship of a material by adopting a Johnson-Cook constitutive model, calculating heat generated in processing and a cutter surface temperature, and then calculating a cutter surface contact stress; and finally, substituting the obtained surface temperature and surface contact stress of the tool into a tool wear rate calculation formula, obtaining a tool wear rate calculation formula by combining a hard point wear rate calculation formula, a bonding wear rate calculation formula and a hardness calculation formula, and calculating the tool wear volume according to the initial wear width of the tool. And finally obtaining the tool flank width wear rate of the tool. By using the wear rate calculation method provided by the invention, the wear rate of the cutter during milling of the aluminum-based silicon carbide can be accurately calculated.
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