The general principles are as follows:
1. The low precision, light load ball screw is made of carbon structural steel. Some of them can be cold-rolled and used directly.
2. High precision and high load ball screws are mainly made of alloy tool steel and bearing steel, and are usually subjected to induction hardening, flame hardening, and integral hardening.
3. Some manufacturers of small-sized ball screws use it for carburizing and quenching.
4. Some high-precision ball screws that are prone to deformation during heat treatment can be made of nitriding steel and used after nitriding.
5. For ball screws working in corrosive and high-temperature environments, precipitation hardened stainless steel materials can be selected
Ball screw is the most commonly used transmission component in tool machinery and precision machinery. Its main function is to convert rotational motion into linear motion or torque into axial repetitive force, with high precision, good reversibility, and high efficiency. Ball screws are widely used in various industrial equipment and precision instruments due to their low frictional resistance.
A ball screw is composed of a screw, nut, steel ball, preloading component, reversing device, and dust prevention device. Its function is to convert rotational motion into linear motion, which is a further extension and development of Akem screws. The significance of this development lies in changing bearings from sliding motion to rolling motion.
The general principles for selecting trapezoidal screw materials are as follows:
1. Low precision, light load screws are usually made of carbon structural steel, which is normalized, quenched, and tempered, or directly processed from cold-rolled easy cutting steel.
2. High precision, light load lead screws are usually made of carbon steel or alloy tool steel, and undergo quenching and tempering or spheroidizing and annealing treatment.
3. Medium carbon structural steel with lower precision and wear resistance requirements can be used directly after nitrogen carbon co diffusion treatment.
4. Screw rods with high precision and frequent operation are usually quenched with alloy tool steel and treated with high-quality nitriding steel. Nitriding screws can withstand high temperature operation.
5. By using low-alloy steel for carburizing and quenching, high-precision and wear-resistant small grid screws can be produced.
6. During measurement, it is possible to induce quenching of screws with lower stress.