JPS5676735A - Forged piston used for disk brake - Google Patents

Forged piston used for disk brake

Info

Publication number
JPS5676735A
JPS5676735A JP17055380A JP17055380A JPS5676735A JP S5676735 A JPS5676735 A JP S5676735A JP 17055380 A JP17055380 A JP 17055380A JP 17055380 A JP17055380 A JP 17055380A JP S5676735 A JPS5676735 A JP S5676735A
Authority
JP
Japan
Prior art keywords
die
diameter
open end
piston
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP17055380A
Other languages
Japanese (ja)
Other versions
JPS5818534B2 (en
Inventor
Masayuki Kurata
Toshihiko Kimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akebono Brake Industry Co Ltd
Original Assignee
Akebono Brake Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Akebono Brake Industry Co Ltd filed Critical Akebono Brake Industry Co Ltd
Priority to JP55170553A priority Critical patent/JPS5818534B2/en
Publication of JPS5676735A publication Critical patent/JPS5676735A/en
Publication of JPS5818534B2 publication Critical patent/JPS5818534B2/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/02—Fluid-pressure mechanisms
    • F16D2125/06—Pistons

Abstract

PURPOSE:To simply manufacture a light and hollow piston evenly thick as a whole by shaping a precisely columnar substance in the form of a bottomed cylinder and rolling its part near the open end. CONSTITUTION:A precisely columnar substance 20 like a S10C-S35C carbon steel bar whose diameter is approximately 80% of a maximum outside diameter R1 of a piston is inserted in a concaved die 21 of an inside diameter R1 and pressed by a press pattern 23 at a room temperature, thereby having the same diameter as the inside diameter R1 and smooth top and bottom faces. Then the deformed body is inserted in a die 21a similar to the die 21 and pressed by a press pattern 23a of an outside diameter R3 to a stop near the bottom to form a bottom 24a. A new cylinder 24 is made up, having a throughout even thickness (t) and being slightly longer than the full length L of a completed piston. Then, a part which intersects with a radial line of an open end face 30 of the cylinder 24 is notched in the form of a smoothly curved V-shape at the opposed points by a forging work or so. After an external part separated from the open end face 30 as long as l is engraved to form an annular depression 29, an annular groove 29a for retaining a dust-proof boot is formed.
JP55170553A 1980-12-03 1980-12-03 Disc brake piston Expired JPS5818534B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55170553A JPS5818534B2 (en) 1980-12-03 1980-12-03 Disc brake piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55170553A JPS5818534B2 (en) 1980-12-03 1980-12-03 Disc brake piston

Publications (2)

Publication Number Publication Date
JPS5676735A true JPS5676735A (en) 1981-06-24
JPS5818534B2 JPS5818534B2 (en) 1983-04-13

Family

ID=15906994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55170553A Expired JPS5818534B2 (en) 1980-12-03 1980-12-03 Disc brake piston

Country Status (1)

Country Link
JP (1) JPS5818534B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5105917A (en) * 1990-12-31 1992-04-21 Kelsey-Hayes Company Disc brake piston
US5231916A (en) * 1990-02-08 1993-08-03 Alfred Teves Gmbh Cold-worked piston for hydraulically operating brake
JP2003511636A (en) * 1999-10-08 2003-03-25 フレニ・ブレンボ エス・ピー・エー Piston for disc brake cylinder and piston unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5231916A (en) * 1990-02-08 1993-08-03 Alfred Teves Gmbh Cold-worked piston for hydraulically operating brake
US5105917A (en) * 1990-12-31 1992-04-21 Kelsey-Hayes Company Disc brake piston
JP2003511636A (en) * 1999-10-08 2003-03-25 フレニ・ブレンボ エス・ピー・エー Piston for disc brake cylinder and piston unit

Also Published As

Publication number Publication date
JPS5818534B2 (en) 1983-04-13

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