SIGER Machine Tool Thermal Error Compensation System

SIGER Thermal CMS reduces thermal errors in CNC machine tools caused by temperature variations during machining through measurement and compensation systems, thereby enhancing machining accuracy and stability. Based on the embedded structure of the machine tool and combined with a thermal error compensation model, it outputs compensation values in real time, effectively improving product machining precision and reducing the scrap rate.

Thermal error of CNC machine tools: Prolonged operation or ambient temperature changes cause thermal expansion/contraction, reducing machining accuracy.

SIGER Thermal Compensation Management System: Real-time temperature acquisition and monitoring (XYZ axis bearing seat) | thermal error regression analysis | error compensation written into macro variables

The core functions of Thermal Compensation Management System are as follows:

• ■  Based on the spindle temperature collection at the X-axis and Z-axis guide rails and the bearing seat, the spindle temperature information is monitored in real time.
• ■  Through the temperature rise and thermal error polynomial regression analysis at the guide rails and the bearing seat, a temperature difference compensation model is constructed.

• ■  Combined with the temperature change from cold machine to hot machine of the machine tool, combined with the results of algorithm analysis, the error compensation value is calculated, the data acquisition service is called, and the error compensation value is sent to the machine tool based on the macro variable assignment method.

① Data Acquisition

• ➤ Communicate with the machine tool through the data acquisition service to realize the real-time writing of the machine tool R address data.
• ➤ Use the Modbus communication protocol to parse the temperature sensor data in real time.
• ➤ Establish the binding relationship between the temperature sensor and each axis of the machine tool (X, Y, Z and spindle).
• ➤ Clean and process the collected temperature data to remove abnormal values and ensure data quality.

② Data Analysis

• ➤ Calculate the error change Δμ in combination with real-time temperature data.
• ➤ According to the preset compensation model and the relationship between the axes of the machine tool, when the error change exceeds the set threshold, the corresponding compensation value is output through linear interpolation and other methods.
• ➤ Use the HTTP Server interface to write the compensation value to the R address corresponding to the machine tool in real time.

③ Data Storage

• ➤ Real-time temperature data is stored offline, including key information such as timestamp, reporting frequency, axis number (such as X, Y, Z and spindle).

Application scenarios of thermal compensation management system：

• ■  Applicable machine tool types: CNC lathes, turning and milling compound and other machine tool cutting scenarios.
• ■  Applicable processing technology: Large-scale repeated processing, large-scale nested processing, long-term mold processing, small-batch processing, rough/finishing processing and other process types (back cutting amount is not less than 10 wires).

• ■  Applicable processing methods: Turning, milling, tooth surface, curved surface, etc.
• ■  Applicable processing scenarios: Mold processing, equipment manufacturing, large automotive parts and aerospace and other long-term processing scenarios;

Hardware installation diagram: Temperature sensor | tool setting instrument | probe installation | transmission gateway, etc.

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Official Contact Info:

Email: marketing@siger-data.com

WhatsApp: +86 189 6235 3927

WeChat：189 6235 3927