Implementation of an Algorithm to Prevent Chatter Vibration in a CNC System

Area of Science:

• Manufacturing Engineering
• Mechanical Vibrations
• Machine Tool Dynamics

Background:

• Machining high-compliance shafts is challenging due to self-excited chatter vibrations.
• Chatter can be mitigated by selecting appropriate technological parameters.
• Accurate knowledge of machine-tool-workpiece dynamic properties is crucial for parameter selection.

Purpose of the Study:

• To propose a method for determining the dynamic properties of machine-tool-workpiece systems.
• To enable the selection of optimal technological parameters for machining operations.
• To validate an assistance system integrated into a Computerized Numerical Control (CNC) for parameter selection.

Main Methods:

• Utilizing the receptance coupling method to synthesize system dynamic properties.
• Developing an assistance system integrated into a CNC for lathe parameter selection.
• Experimental validation of the proposed approach and assistance system.

Main Results:

• The proposed method successfully determines the dynamic properties of the machine-tool-workpiece system.
• The assistance system aids in selecting appropriate technological parameters to limit chatter.
• Experimental validation confirmed the effectiveness of the developed procedures.

Conclusions:

• The receptance coupling method provides a viable approach to determine machine tool dynamics.
• The integrated CNC assistance system effectively supports the selection of machining parameters to prevent chatter.
• This methodology enhances the efficiency and precision of machining high-compliance shafts.