The bearing capacity of the screw is calculated by the formula. According to the safety factor of the screw, the elastic coefficient, the diameter of the screw shaft root, the installation distance, and the coefficient according to the installation method of the screw, etc. The safety factor is represented by a, E is the elastic coefficient, I is the diameter of the screw shaft root, dr is also the root diameter of the screw shaft, L is the installation distance, and the installation distance indicates the relative distance between the two ends of the screw rod. .
m and N are coefficients depending on the way the screw is installed, support-support m=5.1 (N=1), fixed-support m=10.2 (N=2), fixed-fix m=20.3 (N=4) , fixed-free m=1.3 (N=1/4). The axial static load of the screw is the basic static rated load Co, and the dynamic load is the basic dynamic rated load Ca. The dynamic load refers to the same specification of the screw turns ten times under the same conditions. There will be no peeling phenomenon due to long-term operation. The bearing capacity of Yuantuo’s lead screw is very firm, and the structure is quite stable, and the above data is also a reasonable proof.
Post time: Jan-10-2022