摘要:
A light-weight, sound-damped, composite brake rotor for a vehicle braking system includes a rotor hat and an annular rotor cheek supported by, and cast around, the rotor hat. The rotor hat includes an axially-protruding central hub and an integral flange that extends radially from and circumferentially around the central hub. The rotor cheek includes a top ledge and a bottom ledge that overly a top annular surface and a bottom annular surface, respectively, of the integral flange. An annular interfacial boundary present between an underside of the top and/or bottom ledges and their respective adjacent annular surfaces of the integral flange includes a vibration damping interface. The brake rotor derives its vibration-deadening and sound-damping effects from the vibration damping interface through the occurrence of relative frictional contacting movement.
摘要:
An automotive product having a plurality of components coated with a refractory interface coating and method for making the same are provided. The automotive product may include at least a first component and a second component configured to interconnect and engage one another. The first component may be composed of a first high-density material. The second component may be formed of a second lower-density material. A refractory interface coating may be applied at the interconnection between the first and second components to provide an enhanced surface finish to limit friction, prevent metallurgical bonding between the first material and second material, provide a barrier against galvanic corrosion, and provide a thermal barrier between the first component and second component to guard against thermal deformation or change in dimension of the second component.
摘要:
A Coulomb friction damped disc brake caliper bracket, wherein damping is provided by Coulomb friction, most preferably at the outboard tie-bar thereof, by a Coulomb bar peripherally welded thereto. An inner surface of the Coulomb friction bar is in abutting contact with the external surface of the tie-bar, whereby because of the continuous peripheral edge welding, corrosion cannot find entry into the interface of the two surfaces, yet the two surfaces form are free to vibrate one as to the other in Coulomb friction fashion to thereby provide damping and reduction of brake squeal and other noise.
摘要:
An exemplary embodiment of a brake caliper has a housing with a first chamber and a second chamber. The brake caliper also has a first piston that moves in response to fluid pressure in the first chamber and has a second piston that moves in response to fluid pressure in the second chamber. A brake pad has a leading end portion that is acted upon by the first piston and has a trailing end portion that is acted upon by the second piston. A fluid passage leads to the first chamber. The trailing end portion contacts an associated rotor before the leading end portion contacts the rotor.
摘要:
A brake rotor providing reduced brake pad radial taper wear by providing brake rotor friction surface indent patterns. For example, the indent patterns are the form of radial-biased grooves or linearly arranged cross-drill hole sets, patterned in a configuration that balances brake pad wear, thereby reducing brake pad radial taper wear in a manner tuned specifically for a given type of brake caliper and brake pad material, wherein the reduction in brake pad radial taper wear is accomplished with virtually no penalty to brake pad life.
摘要:
A Coulomb friction damped disc brake caliper bracket, wherein damping is provided by Coulomb friction, most preferably at the outboard tie-bar thereof. In one form, at least one clamping member applies compressive force externally to the caliper bracket, and in a second form, at least one interfacial boundary is internally disposed in the caliper bracket. Provided thereby is a mechanically distinguishable surface boundary between two surfaces which are in mutual contact such that a state of Coulomb friction exists therebetween.
摘要:
A light-weight and sound-damped brake rotor for a vehicle braking system includes a rotor hat and a rotor cheek supported by the rotor hat. The rotor hat includes an axially-protruding central hub and a flange that extends radially from and circumferentially around the central hub. The rotor cheek, which provides at least one braking surface, is formed from two or more separate and distinct pieces which are fixedly secured to the flange of the rotor hat. Located within the rotor cheek underneath the at least one braking surface is a vibration damping element. The brake rotor derives its vibration-deadening and sound-damping effects from the vibration damping element through the occurrence of relative frictional contacting movement.
摘要:
One or more layers of vibration damping material are placed on one or more selected surface regions of a body portion of a vibratile metal article. The layer of damping material is covered with a thin metal sheet. The selected surface may be recessed in the body portion to receive the damping material. The covering sheet may be formed of the same metal composition as body portion, or of a compatible metal composition. The peripheral edges of the covering sheet are ultrasonically welded to the surface of the article body portion to confine the damping material against the selected surface(s) so that the damping material forms a vibration damping interface(s) with the surface(s) of the article. The damping material may function as a coulomb damping material, or a viscous damping material, or both.