Screw bolts are commonly used as small mechanical parts of fasteners, and the formation of their threads is of great importance to the use of screw bolts. What is thread rolling?
Thread rolling is a forming process in which materials are reassembled to form the desired shape. The workpiece blank will grow after the rolling operation is completed.
What are the advantages of screw thread rolling?
1. The surface roughness is less than turning, milling and grinding.
2. The strength and hardness of the rolled thread surface can be improved due to cold work hardening.
3. The utilization rate of materials is high, the productivity is much higher than that of cutting, and it is easy to realize automation.
4. The life of the rolling die is very long. But rolling thread requires that the hardness of the workpiece material does not exceed HRC40.
5. High precision of blank size is required.
6. the precision and hardness of the rolling die are also high, so it is difficult to manufacture the die.
7. It is not suitable for rolling the thread with asymmetric tooth shape.
Post time: Apr-19-2023