In titanium alloy machining, vibration is one of the important factors affecting machining accuracy. In order to effectively reduce the impact of vibration on machining accuracy, the following measures can be taken:
Improve the rigidity of the machine tool: use high rigidity materials to manufacture the machine bed, increase the reinforcement or vibration isolation structure design, in order to improve the overall rigidity of the machine tool and torsional rigidity, and reduce the transmission and amplification of vibration .
Optimize the tool configuration: choose super-hard material tools, such as diamond or carbide tools, optimize the tool geometry parameters, the use of high rigidity tool clamping system, in order to reduce the cutting force and vibration .
Control of cutting parameters: rational selection of cutting speed, feed rate and depth of cut, the use of fine machining strategies, such as multiple strokes, gradually reduce the amount of cutting, in order to obtain a smoother machined surface .
Use of coolant: Choose the appropriate coolant, through the high-pressure coolant or spray cooling, precise injection to the cutting zone to reduce the accumulation of heat and reduce vibration.
Installation of vibration-damping support structures: Rubber cushions, air dampers or hydraulic dampers are installed to absorb the vibrations generated during the machining process and prevent them from being transmitted to other parts of the machine.
Dynamic Balance Adjustment: Dynamic balance adjustment of spindle, transmission system and other key components to reduce unbalanced vibration during rotation.
Optimization of CNC system: Adopting high-precision servo control system to monitor and adjust the speed and position in real time during the machining process to reduce the mechanical vibration caused by acceleration and deceleration too fast.
Machining path optimization: Optimize the machining path planning to avoid sudden change of direction or too large amount of feed to reduce the vibration caused by unreasonable path.
Constant Temperature Environment and Temperature Compensation: Ensure that the machine tool works in a constant temperature environment to avoid the influence of ambient temperature fluctuation on machining accuracy, and adopt temperature compensation technology to monitor the temperature change of each part of the machine tool in real time and adjust the machining parameters automatically.
Use of passive and active vibration reduction technology: passive vibration reduction technology relies on the characteristics of the mechanical structure and material itself to reduce vibration, while active vibration reduction technology uses sensors and actuators to realize real-time monitoring and adjustment.
Through the comprehensive application of the above measures, the impact of vibration on the machining accuracy of titanium alloy can be effectively reduced, and the machining efficiency and product quality can be improved.
