FR2430844A1 - Closed tooling for hot pressing of watch cases - has hydraulic pressure increased as punch descends and released at preset safety value - Google Patents

Closed tooling for hot pressing of watch cases - has hydraulic pressure increased as punch descends and released at preset safety value

Info

Publication number
FR2430844A1
FR2430844A1 FR7821212A FR7821212A FR2430844A1 FR 2430844 A1 FR2430844 A1 FR 2430844A1 FR 7821212 A FR7821212 A FR 7821212A FR 7821212 A FR7821212 A FR 7821212A FR 2430844 A1 FR2430844 A1 FR 2430844A1
Authority
FR
France
Prior art keywords
released
hydraulic pressure
safety value
preset safety
hot pressing
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.)
Withdrawn
Application number
FR7821212A
Other languages
French (fr)
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.)
BURDET JEAN L SA
Original Assignee
BURDET JEAN L SA
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 BURDET JEAN L SA filed Critical BURDET JEAN L SA
Priority to FR7821212A priority Critical patent/FR2430844A1/en
Publication of FR2430844A1 publication Critical patent/FR2430844A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B30B15/281—Arrangements for preventing distortion of, or damage to, presses or parts thereof overload limiting devices
    • B30B15/284—Arrangements for preventing distortion of, or damage to, presses or parts thereof overload limiting devices releasing fluid from a fluid chamber subjected to overload pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

The tooling comprises a top portion (1) containing a chamber (12) filled with hydraulic fluid and a piston (2). Its lower face is extended through a sealing plate (8). Guide rods (7, 10) align the top portion in the die (4). The rods also guide a mobile punch plate(9). Pressure is obtained by contacting the piston lower face. The hot slug (5) is placed in a die cavity (11) and a punch (3) descends to shape the part. The pressure increases the hydraulic pressure in the chamber and this is released (14) at a preset safety value to prevent tooling damage.
FR7821212A 1978-07-11 1978-07-11 Closed tooling for hot pressing of watch cases - has hydraulic pressure increased as punch descends and released at preset safety value Withdrawn FR2430844A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7821212A FR2430844A1 (en) 1978-07-11 1978-07-11 Closed tooling for hot pressing of watch cases - has hydraulic pressure increased as punch descends and released at preset safety value

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7821212A FR2430844A1 (en) 1978-07-11 1978-07-11 Closed tooling for hot pressing of watch cases - has hydraulic pressure increased as punch descends and released at preset safety value

Publications (1)

Publication Number Publication Date
FR2430844A1 true FR2430844A1 (en) 1980-02-08

Family

ID=9210817

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7821212A Withdrawn FR2430844A1 (en) 1978-07-11 1978-07-11 Closed tooling for hot pressing of watch cases - has hydraulic pressure increased as punch descends and released at preset safety value

Country Status (1)

Country Link
FR (1) FR2430844A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998025037A1 (en) * 1995-06-28 1998-06-11 Kema Gmbh, Maschinen, Umwelttechnik, Anlagenbau Strain limiting stop for a drive
CN114472769A (en) * 2020-11-12 2022-05-13 和昌精密股份有限公司 Method for forging shell and method for manufacturing forging blank thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR815330A (en) * 1935-11-20 1937-07-09 Weingarten Vorm Hch Schatz Ag Crank press with slide held in several control points by hydraulic cushions
FR1148058A (en) * 1955-03-22 1957-12-03 Adam Richter Hydraulic overload safety device for eccentric or crank presses
FR2220372A1 (en) * 1973-02-12 1974-10-04 Dorst Keramikmasch
DE2346563A1 (en) * 1973-09-15 1975-03-20 Edelhoff Werkzeugmasch Spindle press with overload guard - spindle nut lifts axially against hydraulic or pneumatic load
FR2317090A1 (en) * 1975-07-11 1977-02-04 Grigorenko Anatoli S HYDRAULIC SAFETY DEVICE OF A PRESS

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR815330A (en) * 1935-11-20 1937-07-09 Weingarten Vorm Hch Schatz Ag Crank press with slide held in several control points by hydraulic cushions
FR1148058A (en) * 1955-03-22 1957-12-03 Adam Richter Hydraulic overload safety device for eccentric or crank presses
FR2220372A1 (en) * 1973-02-12 1974-10-04 Dorst Keramikmasch
DE2346563A1 (en) * 1973-09-15 1975-03-20 Edelhoff Werkzeugmasch Spindle press with overload guard - spindle nut lifts axially against hydraulic or pneumatic load
FR2317090A1 (en) * 1975-07-11 1977-02-04 Grigorenko Anatoli S HYDRAULIC SAFETY DEVICE OF A PRESS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998025037A1 (en) * 1995-06-28 1998-06-11 Kema Gmbh, Maschinen, Umwelttechnik, Anlagenbau Strain limiting stop for a drive
CN114472769A (en) * 2020-11-12 2022-05-13 和昌精密股份有限公司 Method for forging shell and method for manufacturing forging blank thereof

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
BD Lapse confirmed