FR2372664A1 - Article explosive forming safety system - uses microphone to detect explosion and trigger indicator seen by operator - Google Patents

Article explosive forming safety system - uses microphone to detect explosion and trigger indicator seen by operator

Info

Publication number
FR2372664A1
FR2372664A1 FR7736170A FR7736170A FR2372664A1 FR 2372664 A1 FR2372664 A1 FR 2372664A1 FR 7736170 A FR7736170 A FR 7736170A FR 7736170 A FR7736170 A FR 7736170A FR 2372664 A1 FR2372664 A1 FR 2372664A1
Authority
FR
France
Prior art keywords
operator
article
safety system
explosive forming
trigger indicator
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
FR7736170A
Other languages
French (fr)
Other versions
FR2372664B3 (en
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.)
IFA AUTOMOBILWERKE VEB
Original Assignee
IFA AUTOMOBILWERKE VEB
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 IFA AUTOMOBILWERKE VEB filed Critical IFA AUTOMOBILWERKE VEB
Publication of FR2372664A1 publication Critical patent/FR2372664A1/en
Application granted granted Critical
Publication of FR2372664B3 publication Critical patent/FR2372664B3/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/06—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves
    • B21D26/08—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves generated by explosives, e.g. chemical explosives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D5/00—Safety arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Emergency Alarm Devices (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

The manufacture of articles by explosive forming can cause mental stress in the operator with the danger of excessive fatigue. This danger can be avoided by following a safety procedure. The explosive charge (2) is placed inside the blank (1) with a fuse (3) and connected to the ignition switch (4). A microphone (5) connected to an indicator (6) is installed in suitable position. A small test current is used to check the ignition circuit and then the full current is switched on which fires the explosive charge (2). The microphone receives the sound if the explosion has occurred and then transmits a signal to the indicator (6) which is visible to the operator.
FR7736170A 1976-12-03 1977-11-30 Article explosive forming safety system - uses microphone to detect explosion and trigger indicator seen by operator Granted FR2372664A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD7600196097A DD129529A1 (en) 1976-12-03 1976-12-03 SAFETY SWITCHING DEVICE FOR EXPLOSIVE FORMING SYSTEMS

Publications (2)

Publication Number Publication Date
FR2372664A1 true FR2372664A1 (en) 1978-06-30
FR2372664B3 FR2372664B3 (en) 1980-08-14

Family

ID=5506497

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7736170A Granted FR2372664A1 (en) 1976-12-03 1977-11-30 Article explosive forming safety system - uses microphone to detect explosion and trigger indicator seen by operator

Country Status (5)

Country Link
DD (1) DD129529A1 (en)
DE (1) DE2745633A1 (en)
FR (1) FR2372664A1 (en)
HU (1) HU176112B (en)
SE (1) SE7713636L (en)

Also Published As

Publication number Publication date
FR2372664B3 (en) 1980-08-14
SE7713636L (en) 1978-06-04
DE2745633A1 (en) 1978-06-08
HU176112B (en) 1980-12-28
DD129529A1 (en) 1978-01-25

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Legal Events

Date Code Title Description
ST Notification of lapse