Mastering the Art of Tool Measurement: A Comprehensive Guide
As a CNC machine operator, precision and accuracy are crucial to produce high-quality parts. With the increasing use of machining centers, the importance of tool measurement devices has become more apparent. In this article, we will delve into the world of tool measurement, exploring the principles, installation, and debugging of a TS27 R probe from Renishaw. Our goal is to provide a detailed guide for readers to navigate the complexities of tool measurement and optimize their machining processes.
The Basic Principle of Tool Measurement
The installation and debugging of the TS27 R probe begins with an understanding of the principle of measurement. This system uses the G31 function, which allows the Z-axis to stop moving when the skip signal changes from "0" to "1." The macro program then controls the axis to withdraw, allowing the probe to touch the measurement block, and measure the real length and diameter of the tool. The macro variable is then modified to achieve the exact compensation value for the tool.
Installation and Debugging of the TS27 R Probe
The TS27 R probe consists of a probe and a signal conversion device. The probe is installed on the workbench and positioned to minimize interference with the machining area. The parallelism and orthogonality of the probe contact surface must be adjusted using a dial gauge or a DTI dial. The conversion device is installed in the electric cabinet, ensuring a regulated DC 24V power supply.
Wiring Diagrams
Configuring the correct wiring is crucial for the successful operation of the tool measurement device. Figures 1 and 2 illustrate the wiring diagrams for the Mitsubishi and Fanuc systems, respectively.
Calibration of the Probe
Before conducting any measurements, the probe must be calibrated to determine its coordinates position within the machine’s coordinate system. This process involves using the Z-metering block to determine the coordinate values of the tool-machine reference point.
Step-by-Step Calibration Procedure
Determine the value of the Z-coordinate by using the Z-metering block and confirming the reference point of the machine tool. Set the measurement block to 10 mm from the upper surface.
Calibrate the X and Y directions by using the MDI method and running the following program: G65 P9851 K149.536. Adjust the steering wheel to reach the standard length and diameter, set the coordinates value X to 1, and manually move the tool to a position 10 mm from the central surface.
- Determine the coordinate values of X and Y directions by running the program: G65 P9852 S20.001 K12.7. Adjust the steering variable # 530 to 2 and perform G65 P9852S20.001 K12.7 again to establish the position of the measurement block in the X and Y directions.
Measurement of the Tool
Once the calibration is complete, the size of the measurement block and its position within the tool’s coordinate system are determined. This enables accurate measurement of the tool’s length, diameter, and effective cutting length.
Manual Measurement of Tool Length
To measure rotation or non-rotation effective cutting length, use manual length measurement (09851) and follow these steps:
- Set the manual length measurement to measure the effective cutting length of the tool.
- Use the program G65 P9851 K149.536 to set the steering coordinate value Z.
- Set the measurement block to 10 mm from the upper surface.
- Measure the tool’s length and diameter using the manual length measurement.
- Store the calibrated coordinate values and measurement block size in the macro variable for use in subsequent macro programs.
Conclusion
In this article, we have provided a comprehensive guide to the installation, debugging, calibration, and measurement of the TS27 R probe. By understanding the principles, installation, and debugging of the tool measurement device, CNC machine operators can optimize their machining processes, improving efficiency and accuracy. Our hope is that this guide will serve as a valuable resource for those navigating the complexities of tool measurement. With the increasing demand for precision and accuracy in manufacturing, mastering the art of tool measurement is more crucial than ever.
