High-Speed Machining (HSM) is one of the most advanced manufacturing technologies in modern industry. It offers significant advantages, including high cutting efficiency, reduced cutting force and heat, minimal vibration, and improved processing quality. The cutting speed, feed rate, and acceleration in HSM are typically 5 to 10 times higher than those in conventional machining. This leads to a completely different set of technical data for machine tools, cutting tools, and the cutting process itself. Due to differences in the performance of domestic workpiece materials compared to foreign ones, it's not feasible to directly apply foreign HSM process data. To maximize the value of expensive imported HSM equipment and extend tool life, it is essential to develop a customized HSM technology database that fits local conditions and provides practical tools for domestic enterprises.
This article introduces a high-speed cutting process database developed through international collaboration between production, research, and academic institutions. As shown in Figure 1, the database system is designed to provide users with technical data for high-speed milling, which accounts for about 80% of HSM applications. Currently, the database focuses on milling process data and includes two major components: software and process technology data. The software uses a tree-structured relational database, offering strong management functions, ease of use, and scalability. The back-end database is built on SQL Server 2000, while the user interface is developed using VB6.0, allowing for smooth interaction via ODBC.
The database contains tables for workpiece materials, tools, processes, and craft images, as seen in Figure 2. Workpiece material has a global impact on HSM, so the logical relationships in the database are based on this. Each table is designed to store detailed information such as mechanical properties, geometry, and cutting parameters. The process table includes spindle speed, axial depth, feed rate, and other critical parameters. Additionally, the database supports both roughing and finishing operations, with specific accuracy and surface finish values for the latter.
Figure 3 shows the material table under the SQL Server 2000 platform, where each record corresponds to a unique HSM example. Primary keys and search indexes ensure efficient data retrieval and prevent duplication. The user interface, as shown in Figure 4, allows users to query, manage, and export data in various formats, including text, HTML, and Office documents. A management interface enables real-time updates without leaving the software.
In terms of process data accumulation, the database includes examples involving aluminum alloys, steel, cast iron, and other materials, with cutting speeds reaching up to 3900 m/min. These cases demonstrate improved efficiency, quality, and tool life. Future development aims to expand the database into an expert system accessible via the internet, supporting further collaboration between Chinese companies and international partners.
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