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DE19708667A1 - Test unit for testing torques at screwed connections of power screw drivers and torque spanners - Google Patents

Test unit for testing torques at screwed connections of power screw drivers and torque spanners

Info

Publication number
DE19708667A1
DE19708667A1 DE1997108667 DE19708667A DE19708667A1 DE 19708667 A1 DE19708667 A1 DE 19708667A1 DE 1997108667 DE1997108667 DE 1997108667 DE 19708667 A DE19708667 A DE 19708667A DE 19708667 A1 DE19708667 A1 DE 19708667A1
Authority
DE
Germany
Prior art keywords
torque
testing
torques
screw connections
wrenches
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Withdrawn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
DE1997108667
Other languages
German (de)
Inventor
Sven Schiron
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.)
UNIVERSAL ELEKTRONIK HANDELSGE
Original Assignee
UNIVERSAL ELEKTRONIK HANDELSGE
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 UNIVERSAL ELEKTRONIK HANDELSGE filed Critical UNIVERSAL ELEKTRONIK HANDELSGE
Priority to DE1997108667 priority Critical patent/DE19708667A1/en
Publication of DE19708667A1 publication Critical patent/DE19708667A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
    • B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
    • B25B23/1425—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by electrical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

The torque testing unit with an electronic torque spanner is provided a horizontal adjustable and fixable axial sensor head (1) per catch (3). So that this torque spanner is introduced force locked so in a unit (8, 9), which secondary to the testing of the screwed connections also allows the testing of the torque spanner. Suitable selectable measurement algorithms are recorded in the torque spanner (4) for the testing of screwed connections as well as torque spanners. The system (fig. 2) has fixing points (10) for mechanical screw simulators, so that a dynamic measurement of power screw drivers can be carried out across the screw simulator.

Description

Die Erfindung betrifft ein Verfahren und eine Einrichtung zum Prüfen von Drehmomenten auf Schraubverbindungen, Kraftschraubern und mechanischen Drehmomentschlüsseln. Bisher sind Verfahren bekannt bei denen Meßwellen (Sensoren) in Verbindung mit Meßrechnern zu solchen Aufgaben herangezogen werden, was wegen des konstruktiven Aufwandes zu hohen Kosten führt. Auch ist die Handhabung wegen der Kabelverbindung zwischen Sensor und Meßrechner hinderlich.The invention relates to a method and a device for testing Torques on screw connections, power screwdrivers and mechanical Torque wrenches. So far, methods are known in which measuring waves (Sensors) used in connection with measuring computers for such tasks become, which leads to high costs due to the design effort. Is too handling due to the cable connection between the sensor and the measuring computer cumbersome.

Bekannt sind auch elektronische Drehmomentschlüssel, mit starrem und schwenkbarem Torsionsschaft als Sensor, die aber nur Drehmomente auf Schraubverbindungen prüfen können. Ebenso sind Einrichtungen bekannt, die entweder Kraftschrauber oder mechanische Drehmomentschlüssel prüfen können.Electronic torque wrenches with rigid and are also known swiveling torsion shaft as a sensor, but only on the torques Can check screw connections. Facilities are also known that be able to check either power wrenches or mechanical torque wrenches.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Einrichtung zu schaffen, welche in der Lage ist alle in der Praxis vorkommenden Drehmomentprüfungen durchzuführen sowie störende Kabelverbindungen zwischen Sensor und Meßrechner zu vermeiden.The invention has for its object to a method and a device create what is capable of all occurring in practice Carry out torque tests and annoying cable connections between Avoid sensor and measuring computer.

Eine Ausführungsform der Erfindung wird anhand der Zeichnung näher erläutert:
Ein Drehmomentsensor (1) wird als Torsionsschaft in der Schraubachse eines elektronischen Drehmomentschlüssels angeordnet. Bei der manuellen Prüfung von Schraubverbindungen werden Meßfehler dadurch minimiert, daß der Sensors in der Schraubachse gelagert ist, und somit das Ansetzen der Betätigungskraft an verschiedenen Stellen des Schlüssels keine negativen Auswirkungen hat. Auch wenn im Sinne der Erfindung von außen durch einen Kraftschrauber oder durch einen mechanischen Drehmomentschlüssel ein Drehmoment eingeleitet wird, ist es durch diese Anordnung meßbar.An embodiment of the invention is explained in more detail with reference to the drawing:
A torque sensor ( 1 ) is arranged as a torsion shaft in the screw axis of an electronic torque wrench. In the manual testing of screw connections, measurement errors are minimized by the fact that the sensor is mounted in the screw axis, and thus the application of the actuating force at various points on the key has no negative effects. Even if, in the sense of the invention, a torque is introduced from the outside by a power screwdriver or by a mechanical torque wrench, it can be measured by this arrangement.

Die Einleitung des Drehmoments erfolgt über einen normgerechten Antriebsvierkant (2). Die Ausführung ist so gewählt, daß der Sensor auch dynamischen Belastungen gewachsen ist. Die Software und Elektronik in der Meßvorrichtung (4) des Drehmomentschlüssels enthält geeignete Meßalgorithmen um auf Schraubverbindungen, je nach deren Eigenschaft, das Losbrech- oder das Spitzendrehmoment zu erkennen und anzuzeigen. The torque is introduced via a standard square drive ( 2 ). The design is selected so that the sensor can also cope with dynamic loads. The software and electronics in the measuring device ( 4 ) of the torque wrench contains suitable measuring algorithms to recognize and display the breakaway or peak torque on screw connections, depending on their properties.

Der Drehmomentsensor mit Antriebsvierkant (1, 2) im Kopf des Drehmomentschlüssels ist ferner so angeordnet, daß er durch eine mehrstufig rastbare Drehung (3) des Kopfes horizontal zugänglich wird, während gleichzeitig die Meßanzeige (7) gut ablesbar ist. Wird der Drehmomentschlüssel in eine geeignete Einrichtung (8, 9) eingelegt und fixiert, können mechanische Drehmomentschlüssel spezifiziert nach DIN ISO 6789 geprüft und kalibriert werden. Die Software der Meßvorrichtung in dem Drehmomentschlüssel enthält einen dafür geeigneten Meßalgorithmus.The torque sensor with a square drive ( 1 , 2 ) in the head of the torque wrench is further arranged so that it can be accessed horizontally by a multi-stage lockable rotation ( 3 ) of the head, while at the same time the measuring display ( 7 ) is easy to read. If the torque wrench is inserted and fixed in a suitable device ( 8 , 9 ), mechanical torque wrenches specified in accordance with DIN ISO 6789 can be checked and calibrated. The software of the measuring device in the torque wrench contains a suitable measuring algorithm.

Die Einrichtung enthält ferner Anschlußpunkte (10) um einen mechanischen Schraubfallsimulator aufzunehmen, wodurch auch motorbetriebene Kraftschrauber (z. B. Elektro- oder Druckluftdrehschrauber) auf Erreichen ihres Abschaltdrehmomentes geprüft werden können. Die Software der Meßvorrichtung im Drehmomentschlüssel enthält auch für diese Anwendung einen geeigneten Meßalgorithmus.The device also contains connection points ( 10 ) to accommodate a mechanical screwdriver simulator, so that motor-operated power screwdrivers (e.g. electric or pneumatic screwdrivers) can also be checked for reaching their cut-off torque. The software of the measuring device in the torque wrench also contains a suitable measuring algorithm for this application.

Die durch Software und Elektronik in der Meßvorrichtung (4) ermittelten Drehmomentwerte werden in dieser gespeichert und können über eine Schnittstelle (6) zum Zwecke der Dokumentation exportiert werden.The torque values determined by software and electronics in the measuring device ( 4 ) are stored in it and can be exported via an interface ( 6 ) for the purpose of documentation.

Claims (3)

1. Einrichtung zum Prüfen von Drehmomenten an Schraubverbindungen, von motorischen Kraftschraubern und von mechanischen Drehmomentschlüsseln, dadurch gekennzeichnet, daß bei einem elektronischen Drehmomentschlüssel ein per Rastung (3) horizontal einstellbarer und fixierbarer axialer Sensorkopf (1) vorgesehen ist, so daß dieser Drehmomentschlüssel kraftschlüssig so in eine Einrichtung (8, 9) eingelegt neben der Prüfung von Schraubverbindungen auch die Prüfung der genannten Drehmoment-Werkzeuge erlaubt.1. A device for checking of torques at screw connections, by motor power wrenches and mechanical torque wrenches, characterized in that it is provided with an electronic torque wrench, a per detent (3) is horizontally adjustable and fixable axial sensor head (1), so that this torque wrench frictionally so inserted in a device ( 8 , 9 ) in addition to the testing of screw connections also allows the testing of the torque tools mentioned. 2. Verfahren zum Prüfen von Drehmomenten an Schraubverbindungen, motorischen Kraftschraubern und von mechanischen Drehmomentschlüsseln, dadurch gekennzeichnet, daß im Drehmomentschlüssel (4) geeignete, wählbare Meßalgorithmen zur Prüfung von Schraubverbindungen sowie der genannten Drehmoment-Werkzeuge hinterlegt sind.2. A method for testing torques on screw connections, motor-driven power wrenches and mechanical torque wrenches, characterized in that suitable, selectable measurement algorithms for testing screw connections and the torque tools mentioned are stored in the torque wrench ( 4 ). 3. Einrichtung zum Prüfen von motorischen Kraftschraubern, dadurch gekennzeichnet, daß die Vorrichtung gemäß Fig. 2 für mechanische Schraubsimulatoren Befestigungspunkte (10) aufweist, die über den Schraubsimulator eine dynamische Messung von Kraftschraubern gestattet.3. A device for testing motorized screwdrivers, characterized in that the device according to FIG. 2 for mechanical screwing simulators has fastening points ( 10 ) which permit dynamic measurement of screwdrivers via the screwing simulator.
DE1997108667 1997-03-04 1997-03-04 Test unit for testing torques at screwed connections of power screw drivers and torque spanners Withdrawn DE19708667A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1997108667 DE19708667A1 (en) 1997-03-04 1997-03-04 Test unit for testing torques at screwed connections of power screw drivers and torque spanners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1997108667 DE19708667A1 (en) 1997-03-04 1997-03-04 Test unit for testing torques at screwed connections of power screw drivers and torque spanners

Publications (1)

Publication Number Publication Date
DE19708667A1 true DE19708667A1 (en) 1998-09-10

Family

ID=7822127

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1997108667 Withdrawn DE19708667A1 (en) 1997-03-04 1997-03-04 Test unit for testing torques at screwed connections of power screw drivers and torque spanners

Country Status (1)

Country Link
DE (1) DE19708667A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19912837A1 (en) * 1999-03-22 2000-10-26 Raimund Wilhelm Torque wrench
DE10217416C1 (en) * 2002-04-18 2003-07-31 Ivo Geilenbruegge Rotational torque measuring device has measuring head containing torque transmission coupling element and measuring element

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2429278A1 (en) * 1974-01-14 1975-07-17 Jo Line Tools ELECTRONIC TORQUE WRENCH
US4257263A (en) * 1978-07-01 1981-03-24 Werkzeug-Union Gmbh-Dwu Torque wrench
DE3139372A1 (en) * 1981-10-03 1983-04-28 Dr. Staiger, Mohilo + Co GmbH, 7060 Schorndorf Method of measuring the torque and the rotary angle and of analysing the measuring signals during the tightening of a bolt by means of a hand spanner
DE3429950C2 (en) * 1984-08-10 1986-07-24 Freiherr von Wolf Ulrich 1000 Berlin Maltzan Torque wrench
DE3009871C2 (en) * 1979-03-15 1987-02-26 GSE, Inc., Farmington Hills, Mich. Method and device for torque control
DE3805301C1 (en) * 1988-02-20 1989-04-20 Erno Raumfahrttechnik Gmbh, 2800 Bremen, De Device for measuring the prestressing force of screwed connections
DE9311013U1 (en) * 1993-07-23 1993-09-02 Mercedes-Benz Aktiengesellschaft, 70327 Stuttgart Hand-held torque wrench
DE9116758U1 (en) * 1991-02-13 1993-11-18 Carl Walter Schraubwerkzeug-Fabrik GmbH & Co KG, 5600 Wuppertal Torque wrench
DE4343110C2 (en) * 1992-12-21 1996-06-27 Daimler Benz Ag Device for tightening or loosening screw connections monitored by the angle of rotation

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2429278A1 (en) * 1974-01-14 1975-07-17 Jo Line Tools ELECTRONIC TORQUE WRENCH
US4257263A (en) * 1978-07-01 1981-03-24 Werkzeug-Union Gmbh-Dwu Torque wrench
DE3009871C2 (en) * 1979-03-15 1987-02-26 GSE, Inc., Farmington Hills, Mich. Method and device for torque control
DE3139372A1 (en) * 1981-10-03 1983-04-28 Dr. Staiger, Mohilo + Co GmbH, 7060 Schorndorf Method of measuring the torque and the rotary angle and of analysing the measuring signals during the tightening of a bolt by means of a hand spanner
DE3429950C2 (en) * 1984-08-10 1986-07-24 Freiherr von Wolf Ulrich 1000 Berlin Maltzan Torque wrench
DE3805301C1 (en) * 1988-02-20 1989-04-20 Erno Raumfahrttechnik Gmbh, 2800 Bremen, De Device for measuring the prestressing force of screwed connections
DE9116758U1 (en) * 1991-02-13 1993-11-18 Carl Walter Schraubwerkzeug-Fabrik GmbH & Co KG, 5600 Wuppertal Torque wrench
DE4343110C2 (en) * 1992-12-21 1996-06-27 Daimler Benz Ag Device for tightening or loosening screw connections monitored by the angle of rotation
DE9311013U1 (en) * 1993-07-23 1993-09-02 Mercedes-Benz Aktiengesellschaft, 70327 Stuttgart Hand-held torque wrench

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19912837A1 (en) * 1999-03-22 2000-10-26 Raimund Wilhelm Torque wrench
DE19912837C2 (en) * 1999-03-22 2001-04-19 Raimund Wilhelm Torque wrench
DE10217416C1 (en) * 2002-04-18 2003-07-31 Ivo Geilenbruegge Rotational torque measuring device has measuring head containing torque transmission coupling element and measuring element

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