# US 11,111,976 B2 · Method and apparatus for manufacturing brake pad for quality stabilization

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- Number: US 11,111,976 B2
- Document ID: US11111976B2
- Status: Granted
- Kind: B2
- Application number: 16/500,375
- Filed: 2018-11-12
- Published: 2020-12-10
- Granted: 2021-09-07
- Earliest claimed: 2018-01-31
- Assignees: Kb Autosys Co., Ltd
- Applicants: Kb Autosys Co., Ltd
- Inventors: Yong Woong Kim
- Web page: https://patentgrep.com/patent/US11111976B2

## CPC

- F16D 69/04: Attachment of linings
- F16D 2069/045: {Bonding}
- F16D 2069/0475: {comprising thermal treatment}
- F16D 2069/0483: {Lining or lining carrier material shaped in situ}
- F16D 2069/0491: {Tools, machines, processes}
- F16D 2200/0021: Steel
- F16D 2250/0023: Shaping by pressure
- F16D 2250/0038: Surface treatment
- F16D 2250/0061: Joining
- F16D 2250/0092: Tools or machines for producing linings
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES

## Abstract

The present invention relates to a method and an apparatus for manufacturing a brake pad, which are configured to stabilize quality of the brake pad. The present invention provides a method of manufacturing a brake pad including a friction material and a backing plate which are coupled to each other, the method including: a preliminary process of preparing friction material powder and the backing plate; a forming process of forming the friction material powder in the form of the friction material and attaching the friction material to one surface of the backing plate; a quality stabilization process of heating and pressing the friction material after the forming process is completed; a heat treatment process of heating the brake pad at a predetermined temperature after the quality stabilization process is completed; and a grinding process of grinding the friction material.

## Claims

### Claim 1

A method of manufacturing a brake pad including a friction material and a backing plate which are coupled to each other, the method comprising:
a preliminary process of preparing friction material powder and the backing plate;
a forming process of forming the friction material powder in the form of the friction material by pressing and attaching the friction material to one surface of the backing plate;
a quality stabilization process of heating and pressing the friction material after the forming process is completed;
a heat treatment process of heating the brake pad at a predetermined temperature after the quality stabilization process is completed; and
a grinding process of grinding the friction material,
wherein the quality stabilization process is performed by heating the friction material at a temperature of 110 to 260° C., and
wherein the quality stabilization process is performed by pressing the friction material with a pressure of 5 to 20% of a pressure applied to the friction material powder in the forming process.

### Claim 2 (depends on 1)

The method of claim 1, wherein a separate pressing treatment is not performed on the brake pad after the forming process is completed and before the quality stabilization process is performed.

### Claim 3 (depends on 1)

The method of claim 1, wherein the quality stabilization process is performed in a state in which a temperature of a portion of the friction material close to the backing plate is lower than a temperature of a portion of the friction material distant from the backing plate.

### Claim 4 (depends on 3)

The method of claim 3, wherein in the quality stabilization process, a side of the brake pad adjacent to the backing plate is heated to a temperature of 110 to 160° C., and an end of the friction material opposite to the backing plate is heated to a temperature of 190 to 260° C.

### Claim 5 (depends on 1)

The method of claim 1, wherein the quality stabilization process is performed by pressing the friction material with the pressure of 10 to 40 kgf/cm2.