Patent ID: 11859676
Assignee: JTEKT CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 9:
10. A method of manufacturing a constituent member of a constant-velocity joint, comprising:
heating a temperature of a material of the constituent member to a plastic working start temperature;
performing plastic working on the material of the constituent member while the temperature of the constituent member decreases from the plastic working start temperature such that the temperature of the constituent member is greater than or equal to a transformation point of the material of the constituent member immediately after the plastic working is completed;
cooling the material of the constituent member to room temperature after the plastic working is completed;
performing hardening of the material of the constituent member by heating the material of the constituent member to a hardening start temperature and then cooling the material of the constituent member to room temperature;
applying a paint to the material after performing the hardening;
heating the material to a predetermined drying temperature after applying the paint to dry the paint; and
performing tempering of the material by keeping the material at the drying temperature for a predetermined tempering time and then cooling the material,
wherein the hardening cooling start temperature is greater than or equal to the transformation point of the material of the constituent member.