摘要:
There is provided a tapered coupling structure in which a tapered shaft can be coupled to and decoupled from a hub without the use of an O-ring. In a tapered coupling structure 10 in which a tapered shaft 20 and a hub 30 are coupled to each other, the tapered shaft 20 is provided with a taper part 21 on the side of being coupled to the hub 30, and the hub 30 is provided with a high-rigidity part 32 having a thickness in the radial direction larger than that of other regions and having a high rigidity in the radial direction. An oil groove 24 formed in the outer peripheral surface of the taper part 21 to feed oil to the coupling surfaces of the taper part 21 and the hub 3 is provided in a region corresponding to the high-rigidity part 32 in the axial direction.
摘要:
A tapered coupling structure allows a tapered shaft to be coupled to and decoupled from a hub without the use of an 0-ring. The tapered shaft is provided with a taper part on the side that is coupled to the hub, and the hub is provided with a high-rigidity part having a thickness in the radial direction larger than that of other regions and having a high rigidity in the radial direction. An oil groove formed in the outer peripheral surface of the taper part to feed oil to the coupling surfaces of the taper part and the hub is provided in a region corresponding to the high-rigidity part in the axial direction.
摘要:
A taper coupling structure includes a groove, serving as a hollowed part, provided in a rear end surface of a hub. The groove is formed continuously in the circumferential direction and uniformly in the radial direction. In the state in which a taper shaft is fitted in the hub, the groove interferes with the taper shaft in the radial direction. An inner shell part, which is a portion on the inside of the groove in the radial direction, has a low radial rigidity because of the presence of the groove. For this reason, if a force is applied from the hollow portion of a flange part toward the outside in the radial direction, the diameter of the inner shell part is liable to be increased in the radial direction by elastic displacement (deflection).
摘要:
There is provided a taper coupling structure in which a taper shaft can easily be fitted in and removed from a hub. In a taper coupling structure 10, a groove 34 serving as a hollowed part is provided in a rear end surface HB of a hub 30. The groove 34 is formed continuously in the circumferential direction and uniformly in the radial direction. In the state in which the taper shaft 20 is fitted in the hub 30, the groove 34 interferes with the taper shaft 20 in the radial direction. An inner shell part 35, which is a portion on the inside of the groove 34 in the radial direction, has a low radial rigidity because of the presence of the groove 34. For this reason, if a force is applied from the hollow portion of a flange part 32 toward the outside in the radial direction, the diameter of the inner shell part 35 is liable to be increased in the radial direction by elastic displacement (deflection). Therefore, the surface pressure at a position corresponding to the portion in which the groove 34 is formed decreases, so that the taper shaft 20 can easily be fitted in and removed from the hub 30.
摘要:
A method of manufacturing an impeller including a substantially disk-shaped disk, a cover facing the disk, and a blade provided between the disk and the cover, the method includes: forming a groove in a blade attachment surface of the disk or the cover so as to correspond to the shape of an edge tip of the blade; and bonding an inner surface of the groove to the edge tip of the blade through a bonding agent after inserting the edge tip of the blade into the groove.