METHOD FOR MAKING A BRAKING BAND OF A BRAKE DISC, METHOD FOR MAKING THE BRAKE DISC, BRAKE DISC, AND BRAKING BAND FOR BRAKE DISC

    公开(公告)号:US20240229194A9

    公开(公告)日:2024-07-11

    申请号:US18547174

    申请日:2022-02-22

    Abstract: A method for making a braking band (2) for a brake disc (1) for a disc brake, comprising the following steps: a) preparing a mold (10) having an inner cavity (11), which comprises a first portion (11a) of a shape corresponding to the braking band (2) to be made; b) preparing a band preform (20) comprising a central preform (200), an upper outer preform (201) and a lower outer preform (202), said central preform (200) being made of porous ceramic material comprising silicon carbide (SiC), said upper outer preform (201) and lower outer preform (202) being made of porous ceramic material comprising silicon carbide (SiC) and infiltrated with silicon (SiC+Si), wherein a carbon barrier layer (201a, 200a, 200b, 202a) made of carbon is interposed between the upper outer preform (201) and the central preform (200) and between the lower outer preform (202) and the central preform (200), said preforms (200, 201, 202) having the shape of the braking band (2) to be made; c) placing said band preform (20) inside the mold at the first portion (11a) of said inner cavity (11); and d) injecting a liquid or semi-solid aluminum alloy inside the entire inner cavity (11) of the mold (11) to infiltrate the central preform (200) of said band preform (20) made of porous ceramic material with said aluminum alloy, obtaining at the first portion (11a) an aluminum metal matrix composite reinforced by said central preform (200) which defines the braking band (2) to be made. A braking band and a brake disc are made with at least the aforesaid method.

    SYSTEM AND METHOD FOR DETERMINING A BRAKING TORQUE BY MEANS OF A FORCE DETECTION DEVICE AT AN INTERFACE BETWEEN A BRAKE CALIPER BODY AND A HUB HOLDER

    公开(公告)号:US20230339446A1

    公开(公告)日:2023-10-26

    申请号:US17757849

    申请日:2020-12-21

    Applicant: BREMBO S.p.A.

    Inventor: Andrea MILANESI

    CPC classification number: B60T17/22 B60T8/52 F16D65/0062 F16D2055/0008

    Abstract: A detection device for detecting a braking force applied by a brake caliper on a hub holder is configured to be mounted at a fastening interface between the brake caliper and the hub holder and has a low-friction body, a caliper- hub-holder connection element, a sensor element, and an electrical interface. The low-friction body puts into contact the brake caliper and the hub holder at the fixing interface. The caliper- hub-holder connection element, configured to be mechanically connected to the brake caliper and the hub holder, is susceptible of deformation. The low-friction body decouples tightening forces from the braking forces to minimize the effect of the tightening forces on the detection device. The sensor element detects strains and generates electrical signals indicative of detected strains and representative of the braking force. The electrical interface is connected to the sensor element for conducting and making available the generated electrical signals. A method and a system for determining a braking torque are also provided.

    DEVICE AND METHOD FOR A SIMULTANEOUS DETECTION OF TANGENTIAL AND NORMAL FORCES ACTING IN A DETECTION POINT AT A BRAKE CALIPER OR AT A SUSPENSION OF A VEHICLE WHEEL

    公开(公告)号:US20220260126A1

    公开(公告)日:2022-08-18

    申请号:US17618245

    申请日:2020-06-12

    Applicant: BREMBO S.p.A.

    Abstract: A detection device for simultaneously detecting tangential and normal components of a force acting at a brake caliper or suspension of a vehicle wheel has a plate-shaped casing having a force sensor assembly for detecting normal and tangential force components and for generating one or more electrical signals representative of detected normal and tangential force components. The detection device has an electrical interface for conducting and making the one or more generated electrical signals available. A device and a system for determining a braking force due to action of a vehicle brake caliper and a brake caliper system with a braking force estimation function are also provided. Methods for simultaneously detecting tangential and normal components of a force acting at a brake caliper or exchanged between an axle and a suspension of the wheel and for determining a braking force due to action of a vehicle brake caliper are also provided.

    METHOD FOR MAKING A BRAKING BAND OF A BRAKE DISC, METHOD FOR MAKING THE BRAKE DISC, BRAKE DISC, AND BRAKING BAND FOR BRAKE DISC

    公开(公告)号:US20240132999A1

    公开(公告)日:2024-04-25

    申请号:US18547174

    申请日:2022-02-22

    Abstract: A method for making a braking band (2) for a brake disc (1) for a disc brake, comprising the following steps: a) preparing a mold (10) having an inner cavity (11), which comprises a first portion (11a) of a shape corresponding to the braking band (2) to be made; b) preparing a band preform (20) comprising a central preform (200), an upper outer preform (201) and a lower outer preform (202), said central preform (200) being made of porous ceramic material comprising silicon carbide (SiC), said upper outer preform (201) and lower outer preform (202) being made of porous ceramic material comprising silicon carbide (SiC) and infiltrated with silicon (SiC+Si), wherein a carbon barrier layer (201a, 200a, 200b, 202a) made of carbon is interposed between the upper outer preform (201) and the central preform (200) and between the lower outer preform (202) and the central preform (200), said preforms (200, 201, 202) having the shape of the braking band (2) to be made; c) placing said band preform (20) inside the mold at the first portion (11a) of said inner cavity (11); and d) injecting a liquid or semi-solid aluminum alloy inside the entire inner cavity (11) of the mold (11) to infiltrate the central preform (200) of said band preform (20) made of porous ceramic material with said aluminum alloy, obtaining at the first portion (11a) an aluminum metal matrix composite reinforced by said central preform (200) which defines the braking band (2) to be made. A braking band and a brake disc are made with at least the aforesaid method.

    METHOD FOR MANUFACTURING A DISC BRAKE DISC

    公开(公告)号:US20220314300A1

    公开(公告)日:2022-10-06

    申请号:US17596512

    申请日:2020-06-09

    Applicant: BREMBO S.p.A.

    Inventor: Andrea MILANESI

    Abstract: A method for manufacturing a brake disc includes providing at least one sheet of predefined thickness, blanking a first disc-shaped portion in the at least one sheet adapted to make a first plate of a ventilated braking band, blanking a second disc-shaped portion in the at least one sheet adapted to make a second plate of the ventilated braking band, blanking a third portion in the at least one sheet adapted to make at least one ventilation spacer for the ventilated braking band, drawing the third portion by shaping first and second protrusions, forming opposite first and second recesses adapted to make ventilation channels, connecting the first disc-shaped portion to the first protrusion by discontinuous weld spots, and connecting the second disc-shaped portion to the second protrusion by discontinuous weld spots.

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