2385results about "Braking discs" patented technology

A brake drum includes a ring-shaped drum body (13), and a friction member (16) secured to the inner circumferential surface (18) of the drum body. Because the drum body is formed of a lightweight Al alloy and the friction member is formed of an Al-base composite material, the brake drum can be reduced in weight as a whole. Further, because the friction member, having projecting portions (17a) formed on its outer periphery (17), is cast-enveloped by molten metal of the Al alloy, the friction member and the drum body can be firmly fastened together. Thus, even when a great braking force is applied to the drum brake, the friction member can be prevented from being undesirably detached from the drum body.

The invention provides a method for manufacturing a friction damped disc brake rotor, including the steps of: (A) positioning at least one insert into a mold, wherein the insert has a body with tabs extending therefrom to hold the insert in a desired position within the mold; and (B) casting a rotor cheek of the disc brake rotor in the mold around the insert such that a portion of each tab is bonded with the rotor cheek and the body is substantially non-bonded with the rotor cheek so that the body provides a proper interfacial boundary with the cheek for damping while the bonding of the tabs with the rotor cheek prevents corrosion-causing exterior elements from reaching the interfacial boundary.

A method for producing a damped part where a sand core is formed with at least one dampening structure with the sand core. The sand core with the at least one dampening structure therein is located in a mold. A part is cast from the mold and the sand core. The sand core is removed from the cast part leaving the at least one dampening structure in contact with the part.

Segmented steel core plates for either double sided or single sided wet clutch friction plates or separator plates and a process for making the same are disclosed.

The apparatus of the present invention provides a brake rotor assembly. The brake rotor assembly includes a generally annular rotor having a frictional surface and a radially inner rotor flange defining a plurality of rotor teeth. The brake rotor assembly also includes a hub section integrally formed onto the rotor. The hub section has a peripheral hub flange configured to engage the plurality of rotor teeth and thereby prevent rotation of the hub section relative to the rotor. The rotor is preferably composed of a first material such as steel or cast iron, and the hub section is preferably composed of a second material such as aluminum or magnesium that is lighter by volume than the first material. Accordingly, the overall weight of the rotor assembly is less than that of a comparable rotor assembly composed entirely of steel or cast iron.

The invention relates to a method for manufacturing a carbon ceramic brake disc, which comprises the following steps of: preparing a carbon fiber blank body, performing natural gas chemical vapor immersion (CVI), graphitizing, machining, making holes, performing a melting reaction and grinding accurately to prepare a carbon ceramic composite brake disc, wherein in the hole making step, a plurality of through holes are distributed on a disc surface of the brake disc fully, and the center line of each through hole is perpendicular to the disc surface of the brake disc. In the method, the through holes distributed on the disc surface of the brake disc fully allows liquid state Si to permeate in the thickness direction of the brake disc uniformly and permeate on the whole friction surface uniformly in a melting Si permeating reaction and ensure the melting Si permeating reaction occurs at an area in the thickness direction intensively and influences the size of the thickness direction only without influencing the size at an area in the radial circumferencial direction basically, so that in the subsequent carbon ceramic machining, the thickness area is machined only. Therefore, the method has the characteristics that the Si permeating depth is desirable; the Si permeation is uniform; and products are easy to machine.