When installing a cold-rolled ball screw, in order to ensure its normal operation, the following key points should be paid attention to:
Cleaning and lubrication:
Before installation, ensure that the surface of the screw and nut is clean and dust-free to prevent impurities from entering the ball circulation system and affecting the transmission accuracy and life.
Use appropriate lubricants for lubrication to ensure that the balls are well lubricated during movement and reduce wear. It is recommended to use bearing oil containing lubricants, and the grease must be kept filled on the steel balls and ball grooves.
Installation accuracy:
Ensure the installation accuracy of the screw and nut, especially the parallelism and verticality of the axis of the screw and the guide rail, to avoid transmission errors caused by installation errors.
Use high-precision measuring tools, such as laser alignment instruments, dial indicators, etc., for precise installation and positioning.
Preload:
Appropriate preload can eliminate the gap between the screw and the nut and improve the transmission accuracy and rigidity.
According to the requirements of the equipment and the specifications of the ball screw, select the appropriate preload to avoid over-tightening or over-loosening. Generally, the preload does not exceed 8% of the dynamic load, and does not exceed 5% for the automated X-Y platform mechanism.
Support method:
Choose a suitable support method to ensure that the screw remains stable during movement and avoid vibration and bending caused by improper support.
Use high-precision bearings and support seats to ensure the support rigidity of the screw.
Protection and sealing:
Install a protective cover or sealing device to prevent dust, chips and other impurities from entering the ball screw and affecting the transmission accuracy and life.
Check the sealing effect of the protective device regularly to ensure its normal operation.
Installation sequence and debugging:
Operate in the correct installation sequence, usually install the screw first, then install the nut, and finally pretighten and adjust.
Strictly follow the installation guide and instructions provided by the manufacturer to ensure the correctness of each step.
After installation, debug and calibrate to ensure the running accuracy and stability of the ball screw. Use high-precision measuring tools for calibration, such as laser interferometers, optical rulers, etc.
Maintenance and maintenance:
Perform regular maintenance and maintenance, check the running status of the ball screw, and replace worn parts in time.
Lubricate and clean the ball screw according to the manufacturer's recommended maintenance cycle to ensure long-term and stable operation of the ball screw.
