摘要:
Disclosed is a brake disk. The brake disk includes a friction part having a coupling aperture within a center thereof and a plurality of recessed portions repeatedly formed at a predetermined interval along an inner circumference of the coupling aperture, in which bevels protrude from inner surfaces of the recessed portions, respectively. The bevels are tapered along upper and lower sides thereof toward protruding centers. The brake disk also includes a hub having a plurality of protrusions inserted into and attached to the recessed portions when coupled to and received in the coupling aperture of the friction part via a cast-bonding method, along a circumference thereof.
摘要:
A method for manufacturing a trunnion for a constant velocity joint, the trunnion having a plurality of journal units provided outside around a hub unit, the method including a first step of manufacturing the trunnion, a second step of thermally treating a rounded outer circumferential surface of the journal unit, and a third step of thermally treating a connection unit disposed between the journal unit and the hub unit and having a diameter smaller than that of the journal unit.
摘要:
Disclosed are a method of manufacturing cage for a constant velocity joint and a cage for a constant velocity joint manufactured using the same for providing a cage having improved hardness, strength, and elongation while having a structure with a uniform core part and surface and for ensuring economic feasibility by reducing manufacturing time. The method includes a cutting operation of forming a structure having an outer shape by cutting a cylindrical pipe, forming an outer circumference of the cut structure to have a curved surface thereon, performing a turning operation on a surface of the formed structure, a punching operation of forming a window in the surface of the structure on which the turning operation is performed, a broaching operation of processing an edge of the window formed via punching, and a heat treatment operation of fully hardening the completely broached cage via austempering.
摘要:
Disclosed is a brake disc for vehicles including a ring-shaped disc part provided with an insertion space formed at the central region thereof, a hub part disposed within the insertion space and provided with recesses formed on the external circumferential surface thereof, and connection parts configured to connect the disc part and the hub part, wherein each of the connection parts is divided into a curved section extending from the internal circumferential surface of the disc part and having both curved side surfaces and a rectilinear section extending from the curved section, having both flat side surfaces and inserted into each of the recess, and widths of the curved section and the rectilinear section are decreased in a direction toward the hub part.
摘要:
Disclosed are a brake disc manufactured from heterogeneous materials and a method of manufacturing the brake disc. In particular, the brake disc manufactured from heterogeneous materials, in which the number of bridges may be optimized to improve castability and relieve stress, thereby eliminating occurrence of a crack and the like which may be generated due to a difference in a thermal expansion coefficient between a friction part and a hat part.
摘要:
Disclosed is a brake disc manufactured from heterogeneous materials and a method for manufacturing the brake disc. The brake disc includes a friction part in which a connection hole is formed in a center, protrusions and recesses are alternately repeated along a circumference of the connection hole, the recess has a shape curved in an opposite direction of the connection hole. The brake disc also includes a hat part that is made of material different from that of the friction part, and has insertion grooves formed along an outer circumference so as to allow the protrusions to be inserted. Particularly, heat radiation holes are formed along the circumference of the connection hole at predetermined distance by connecting insertion parts of the protrusions to the insertion grooves of the hat part with a predetermined gap from an inner surface of the friction part. Also provided is a brake disc manufactured from heterogeneous materials having excellent durability.
摘要:
The present disclosure relates to a brake disc including a braking part having a circular plate shape having a hollow portion and a plurality of coupling portions protruding and extending from an inner diameter surface thereof, and a hat part disposed in the hollow portion and having a plurality of insertion portions protruding laterally, in which the plurality of coupling portions is respectively coupled to the plurality of insertion portions, and the coupling portion of the braking part and the insertion portion of the hat part are joined to only one of an outboard portion or an inboard portion of the braking part. According to the present disclosure, it is possible to reduce noise occurring at a position at which the hat part and the braking part are coupled to each other and improve cooling performance.
摘要:
Disclosed is a brake disc for vehicles including a ring-shaped disc part provided with an insertion space formed at the central region thereof, a hub part disposed within the insertion space and provided with recesses formed on the external circumferential surface thereof, and connection parts configured to connect the disc part and the hub part, wherein each of the connection parts is divided into a curved section extending from the internal circumferential surface of the disc part and having both curved side surfaces and a rectilinear section extending from the curved section, having both flat side surfaces and inserted into each of the recess, and widths of the curved section and the rectilinear section are decreased in a direction toward the hub part.
摘要:
Disclosed is a brake disc manufactured from heterogeneous materials and a method for manufacturing the brake disc. The brake disc includes a friction part in which a connection hole is formed in a center, protrusions and recesses are alternately repeated along a circumference of the connection hole, the recess has a shape curved in an opposite direction of the connection hole. The brake disc also includes a hat part that is made of material different from that of the friction part, and has insertion grooves formed along an outer circumference so as to allow the protrusions to be inserted. Particularly, heat radiation holes are formed along the circumference of the connection hole at predetermined distance by connecting insertion parts of the protrusions to the insertion grooves of the hat part with a predetermined gap from an inner surface of the friction part. Also provided is a brake disc manufactured from heterogeneous materials having excellent durability.
摘要:
The present disclosure relates to a brake disc including a braking part having a circular plate shape having a hollow portion and a plurality of coupling portions protruding and extending from an inner diameter surface thereof, and a hat part disposed in the hollow portion and having a plurality of insertion portions protruding laterally, in which the plurality of coupling portions is respectively coupled to the plurality of insertion portions, and the coupling portion of the braking part and the insertion portion of the hat part are joined to only one of an outboard portion or an inboard portion of the braking part. According to the present disclosure, it is possible to reduce noise occurring at a position at which the hat part and the braking part are coupled to each other and improve cooling performance.