A rotary system stiffness refers to the amount of resistance or rigidity a rotary system has when it is subjected to external forces. It is a measure of how much the system can deform or move when a force is applied to it.
Rotary system stiffness is typically measured in units of force per unit of angle, such as Nm/degree or Nm/radian. This can be done using various methods such as torque tests, deflection tests, or finite element analysis.
There are several factors that can affect the stiffness of a rotary system, including the material properties of the components, the geometry of the system, the type of bearings used, and the amount of preload applied to the system.
The stiffness of a rotary system can greatly impact its performance. A stiffer system will have less deflection and better accuracy, while a less stiff system may have more flexibility and be more prone to errors or vibrations.
The stiffness of a rotary system is directly related to its travel, as a stiffer system will be able to withstand larger forces and therefore have a larger range of motion. However, the travel of a system can also be limited by other factors such as the design and size of the system.