Improving the accuracy of the gantry system is a comprehensive issue that needs to be addressed from multiple aspects. Here are some key strategies and methods:
1. Structural optimization
High-rigidity design:
Use high-strength materials and optimized structural design to improve the overall rigidity of the gantry system and reduce deformation.
Thicken key components such as columns and beams to improve bending and torsion resistance.
Precision machining:
Ensure the machining accuracy of each component of the gantry system and reduce assembly errors.
Precision grinding and polishing of key components such as guide rails and lead screws.
Vibration reduction measures:
Use vibration reduction materials and structures to reduce the impact of external vibration on the system.
Optimize the natural frequency of the system to avoid resonance.
2. Transmission system optimization
High-precision transmission components:
Select high-precision lead screws, guide rails, gears and other transmission components.
Use pre-tightening technology to eliminate transmission clearance.
Servo control system:
Use high-performance servo motors and drivers to improve motion control accuracy.
Optimize servo control parameters to improve response speed and stability.
Encoder feedback:
Use high-precision encoders to achieve position feedback and closed-loop control.
Improve position detection accuracy and repeat positioning accuracy.
3. Control system optimization
Error compensation:
Correct the geometric error, thermal deformation error, etc. of the gantry system through software compensation.
Use laser interferometers, three-coordinate measuring machines and other equipment to measure and compensate errors.
Motion control algorithm:
Adopt advanced motion control algorithms, such as feedforward control and adaptive control, to improve motion accuracy.
Advanced control algorithms can improve the accuracy, production volume and stability of the gantry platform.
Environmental control:
Control the temperature and humidity of the working environment to reduce the impact of environmental factors on accuracy.
In order to keep the accuracy of the gantry machine tool unchanged for a long time, it is necessary to break through the technical barriers.
4. Inspection and calibration
Regular inspection:
Inspect the gantry system regularly to detect and correct errors in time.
Use laser trackers, three-coordinate measuring machines and other equipment for inspection.
Precision calibration:
Precision calibration of the geometric accuracy and motion accuracy of the gantry system.
Ensures that the gantry system maintains high accuracy throughout the entire working range.
