Deep Groove Ball Bearing Processing Steps

In order to enable the deep groove ball bearing to get better performance and use, general manufacturers will carry out processing procedures, which can not only improve the quality of the deep groove ball bearing, but also improve the aesthetics of the bearing and reduce the degree of friction. In order for everyone to have a more comprehensive understanding of the deep groove ball bearing processing process, the author makes the following detailed introduction.

Deep groove ball bearing processing steps

1. Tube blank processing: heat the bearing steel to 1150℃～1200℃ in a heating furnace, and use a punching machine to perforate the heated tube blank to make a capillary tube;

2. Spheroidizing annealing: spheroidizing annealing the capillary tube, the hardness of the capillary tube after annealing is HRB88～94;

3. Hot rolling of billet: send the annealed capillary into the heating furnace for secondary soaking; the capillary after the second soaking is rolled to form a waste tube through diameter reduction, wall reduction and extension;

4. Tube blank shaping and cutting: The waste tube is sizing and shaping through the sizing unit, and then straightened and cut to form a kit;

5. Recrystallization annealing: The kit is subjected to recrystallization annealing treatment to eliminate work hardening, so as to facilitate the implementation of cold rolling;

6. Soft grinding kit: first soft grinding the double end face of the kit, then soft grinding the outer circle of the kit, first grinding the double end face, and then grinding the outer circle, the outer circle is through-grinding, and the material and the material are processed through the end faces. , to ensure that the outer diameter surface of the part is always on the same plane as the pallet, to ensure that the outer diameter taper is within the control range, to adjust the angular relationship between the two grinding wheels in the double-end grinding process, to control the parallel difference of the end surfaces, and the end surface accuracy as a post-process Machining datum surface; the outer circle is processed by centerless grinding;

7. Kit fine hole: Drill stop bolt holes and oil holes on the surface of the kit, and rough the inner hole surface of the kit to prepare for the cold rolling inner hole surface;

8. Cold rolling expansion kit: For cold rolling expansion of deep groove ball bearing raceway, the core roller feed speed has 6 stages in the cold rolling process, and the speed range is 0.4mm/s～1.0mm/s. The trajectory of the curve in one processing cycle is fast, slow, slow, until it stops; the rolling time is between 6s and 14s, and the rolling force is 80KN;

9. Turning kit: Chamfer the kit and seal the groove;

10. Fine grinding kit: fine grinding kit to improve the surface accuracy of the kit;

11. Install the bearing: put the ball between the rings, install the cage, inject grease, install the seal, and complete the assembly of the deep groove ball bearing.