GB1238947A - - Google Patents

Info

Publication number
GB1238947A
GB1238947A GB1238947DA GB1238947A GB 1238947 A GB1238947 A GB 1238947A GB 1238947D A GB1238947D A GB 1238947DA GB 1238947 A GB1238947 A GB 1238947A
Authority
GB
United Kingdom
Prior art keywords
stress
transducer
press
predetermined
piezo
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.)
Expired
Application number
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 filed Critical
Publication of GB1238947A publication Critical patent/GB1238947A/en
Expired 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0094—Press load monitoring means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0061—Force sensors associated with industrial machines or actuators
    • G01L5/0071—Specific indicating arrangements, e.g. of overload
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0061—Force sensors associated with industrial machines or actuators
    • G01L5/0076—Force sensors associated with manufacturing machines

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Measuring Fluid Pressure (AREA)
  • Control Of Presses (AREA)

Abstract

1,238,947. Measuring stress electrically. F. R. DYBEL. Sept.23, 1968 [Sept.25, 1967], No.45178/68. Heading G1N. A stress sensor 1 on a press comprises two brackets 13, 14 screwed into a connecting rod 2 and aligned parallel to the direction of stress so that part of it is applied to a Piezo-electric transducer 3 clamped between insulating balls 15, 16 with a predetermined pressure set by a screw 17, the Piezo-electric crystal 4 supplying an output signal via terminals 9, 10 to a circuit which either isolates the press from its power supply at a predetermined overload stress or counts the number of press operations in response to a predetermined working load stress. The transducer is shielded by a metal sheet 7 at earth potential insulated from terminal blocks 5, 6 by spacers 8. One of the balls 15, 16 may be conductive allowing the transducer to be earthed through the press. A gas-filled valve 23 is biased just to non-conduction so that a predetermined maximum stress causes the output signal of the transducer, modified by an R-C circuit, to bring the valve into conduction, lighting a lamp L and operating a relay 24 which controls an isolator and/or summing counter. A bias control potentiometer 20 has a calibrated control dial allowing the maximum stress to be pre-set.
GB1238947D 1967-09-25 1968-09-23 Expired GB1238947A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67018967A 1967-09-25 1967-09-25

Publications (1)

Publication Number Publication Date
GB1238947A true GB1238947A (en) 1971-07-14

Family

ID=24689365

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1238947D Expired GB1238947A (en) 1967-09-25 1968-09-23

Country Status (7)

Country Link
JP (1) JPS4978B1 (en)
BE (1) BE721301A (en)
DE (1) DE1798301C3 (en)
FR (1) FR1585502A (en)
GB (1) GB1238947A (en)
NL (1) NL160084C (en)
SE (1) SE348284B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111469469A (en) * 2020-03-07 2020-07-31 温州职业技术学院 Integral garbage compression box of multifunctional pushing and pressing device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2549414C2 (en) * 1974-11-06 1982-05-13 International Measurement & Control Co., Park Forest South, Ill. Device for monitoring and recording mechanical compressive or tensile stress
FR2570020B1 (en) * 1984-09-11 1988-07-22 Commissariat Energie Atomique AUTOMATIC PRESS
JPH059270U (en) * 1991-07-25 1993-02-09 株式会社浅利研究所 Squid hook
DE102011011824A1 (en) 2011-02-19 2012-08-23 Volkswagen Ag Stroke rate sensor for monitoring tool of machine tool, particularly press or cutting tool, for pressing or cutting of sheet metal components, has converter unit that is arranged at tool
CN108318174A (en) * 2018-03-08 2018-07-24 山东泰开隔离开关有限公司 A kind of telescopic disconnecting switch clamping force detector of single armed

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1746242U (en) * 1957-04-05 1957-06-06 Siemens Ag COMBINATION OF A FORCE CELL AND ITS STORAGE.
US3033034A (en) * 1958-05-03 1962-05-08 Philips Corp Resistance strain gauge operating with transformation
AT264351B (en) * 1966-10-17 1968-08-26 Ernst Wolff Feeding device of a high bunker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111469469A (en) * 2020-03-07 2020-07-31 温州职业技术学院 Integral garbage compression box of multifunctional pushing and pressing device
CN111469469B (en) * 2020-03-07 2022-03-04 温州职业技术学院 Integral garbage compression box of multifunctional pushing and pressing device

Also Published As

Publication number Publication date
NL160084B (en) 1979-04-17
JPS4978B1 (en) 1974-01-05
NL160084C (en) 1979-09-17
SE348284B (en) 1972-08-28
DE1798301A1 (en) 1971-10-14
BE721301A (en) 1969-03-24
NL6813534A (en) 1969-03-27
DE1798301B2 (en) 1981-06-04
FR1585502A (en) 1970-01-23
DE1798301C3 (en) 1982-03-04

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee