Linear and rotational angle detection of five axis CNC machine tools

Testing Requirements for Five Axis CNC Machine Tools

With the rapid development of manufacturing technology, there are higher requirements for modern manufacturing equipment to be "high, precise, and sharp". As a high-end manufacturing equipment, five-axis CNC machine tools perfectly meet the requirements for high-precision, anisotropic curved surfaces, impellers, blades, marine propellers, heavy-duty generator rotors, steam turbine rotors, large diesel engine crankshafts, and other multi-axis linkage processing in processing, becoming a hot topic in high-end manufacturing equipment.

Excellent performance has given rise to higher detection standards: the accuracy detection of five axis CNC machine tools, especially the angle accuracy detection of two rotation axes, is particularly important. However, traditional rotation axis detection can only detect horizontal rotation axes; The introduction of the A and C rotation axes in the five axis CNC machine tool causes the rotation axis to swing and deviate from the horizontal position during detection. If conventional Laser Interferometer detection methods are used, it will cause the laser interferometer to break light, making it impossible to carry out detection.

In response to this issue, API has launched a solution combining XD Laser 6-dimensional laser interferometer and Swivelcheck Angle Pendulum Tester, which can perfectly solve the problem of detecting the angle accuracy of linear and rotating axes in five-axis CNC machine tools.

1. Linear detection
The API brand XD Laser 6-dimensional laser interferometer has the ability to detect multiple data simultaneously during one installation, including positioning accuracy, repeated positioning accuracy, and reverse clearance; Horizontal straightness and vertical straightness of the guide rail; The pitch angle, yaw angle, and rolling angle of each measurement point; There is no need to repeatedly adjust and align the light, and it can be used on the adsorption workbench, eliminating the cumbersome need to remove the machine cover and repeatedly align the light when using a regular laser interferometer and detecting multiple parameters. This improves the detection efficiency by over 80%.
2. Rotation angle detection:
For the detection of non horizontal rotating axes, the Swivelcheck angle pendulum tester can be used independently, without the need to disassemble key components of the machine tool or install additional tooling, efficient measurement, and solving the problem of light interruption due to changes in swing angle.
For the detection of the rotary axis of the horizontal workbench, Swivelcheck and XD Laser Interferometer are all needed to achieve the detection goal quickly and efficiently.
Please refer to the schematic and example diagrams for detecting the rotation axis angle of each item below.
1. Swing axis angle detection (cradle type workbench)
2. Spindle head rotation type A and C axis angle detection
3. Vertical turntable detection

4. Horizontal Workbench Rotary Axis (C-axis) Detection - Swivelcheck Angular Pendulum Tester&XD Laser Interferometer Combined Application

conclusion
The combination solution of XD Laser 6-dimensional laser interferometer and Swivelcheck angular pendulum inspection instrument can perfectly solve the accuracy detection and compensation problems of linear and rotational axes in five-axis CNC machine tools. One installation can detect multiple parameters, with the characteristics of simple, convenient, fast, and efficient use. It has good data consistency and high reliability, making it an excellent choice for CNC machine tool manufacturers, users, universities, research institutes, and other units to solve the problem of CNC machine tool detection and compensation.

About API
The API brand was founded by Dr. Kam Lau in Rockwell, Maryland, USA in 1987. It is the inventor of laser trackers and holds multiple patents for leading global measurement technologies, making it a leader in the field of precision measurement technology; Since its establishment, API has always been committed to the research and development and production of precision measurement instruments and high-performance sensors in the field of mechanical manufacturing. Its products have been widely applied in advanced manufacturing fields around the world, and are leading in high-precision standards for coordinate measurement and machine tool performance testing.