Introduction
In modern CNC lathes, the use of motorized turrets or sub-spindles with electric axes presents a significant functional limitation: these axes are not designed to exert continuous axial force on the workpiece, but only for positioning. This can be a critical issue in machining processes that require constant axial force.
The Solution: The Spring-Loaded Rotating Live Center Series 81
To address this issue, the spring-loaded rotating Live Center Series 81 has been developed. This device is designed to ensure a constant and controlled axial force, even in the absence of hydraulic pressure or servo thrust. Additionally, it can automatically compensate for any tolerances in the center holes between the batch pieces, a compensation that would not be possible with a traditional Live Center, as it cannot dynamically adapt to variations between pieces.
Simple and Effective Operation
The operation of the spring-loaded rotating Live Center Series 81 is very simple. During the presetting of the batch, the tip of the live center is positioned in contact with the center hole of the workpiece and a Z- increment is set from the CNC. This axial movement generates the compression of the internal spring pack, thus producing a constant thrust on the workpiece being machined.
Technical Features
On the live center shaft, there is a dynamometric scale with 3 notches that allows visual reading of the axial load exerted. The value obtained varies based on the deformation of the internal springs, with a range from 200 to 600 kg, depending on the type of workpiece being machined. This feature allows the force exerted to be adapted according to the specific needs of each machining process, ensuring precision and quality.
Conclusion
The spring-loaded rotating live center Series 81 represents a significant innovation in the field of mechanical machining with CNC lathes. Thanks to its ability to maintain a constant axial force and dynamically adapt to variations between pieces, it offers an effective solution to the limitations of traditional electric axes. Its ease of use and advanced technical features make it an indispensable tool for improving the quality and efficiency of machining processes.
