EP2147751A1 - Methode und elektronisches Anbauteil zum Anziehen einer Mutter oder einer Schraube um einen Drehwinkel - Google Patents

Methode und elektronisches Anbauteil zum Anziehen einer Mutter oder einer Schraube um einen Drehwinkel Download PDF

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Publication number
EP2147751A1
EP2147751A1 EP09166084A EP09166084A EP2147751A1 EP 2147751 A1 EP2147751 A1 EP 2147751A1 EP 09166084 A EP09166084 A EP 09166084A EP 09166084 A EP09166084 A EP 09166084A EP 2147751 A1 EP2147751 A1 EP 2147751A1
Authority
EP
European Patent Office
Prior art keywords
electronic
nut
rotation
bolt
electronic accessory
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Withdrawn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
EP09166084A
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English (en)
French (fr)
Inventor
Lucio Celeghin
Gianluca Innamorato
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.)
Beta Utensili SpA
Original Assignee
Beta Utensili SpA
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 Beta Utensili SpA filed Critical Beta Utensili SpA
Publication of EP2147751A1 publication Critical patent/EP2147751A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention refers to a method and an electronic accessory for angular fastening of a nut or bolt independently of the shape.
  • the value of such a last rotation generally depends on the aforementioned predetermined fastening torque.
  • the procedure currently used for the correct fastening of a nut or a bolt depends on a pair of values which are a force/torque, respectively, expressed in Newtons or Newton metres, and an angle, expressed in degrees, and consists of two distinct steps in which the first step has the purpose of fastening the nut or bolt up to a set fastening force, which is equal to reaching the force/torque required in order to further rotate the nut or bolt, and a second step which is subsequent to the previous one, which has the purpose of imparting a further particular rotation to the nut.
  • a correct fastening is obtained which does not damage the threading of the relative bolt or nut and ensures homogeneity of the torque on the mechanical component kept in its seat by such a nut or bolt.
  • a first type of widespread devices, used to accomplish the first fastening step i.e., the one carried out with force/torque control, is known by the name "torque wrench” which is simply a controlled fastening manoeuvre wrench which contains a mechanism able to signal when a set force/torque value is reached which can be set at the beginning of the fastening operation.
  • such a signal of the reaching of the set force/torque value can occur mechanically, for example, thanks to a trip mechanism or through a hand which indicates the instantaneous fastening value on a graded scale usually in kilogram metres or Newton metres in the metric system, or electronically by foreseeing load cells suitably arranged and connected to a signalling/reading display.
  • the devices known today suitable for accomplishing such a task are in general of the mechanical type and are made up of a graded angular scale goniometer, a shaped base to grip the nut to be fastened, an end to be coupled with the wrench with which the nut is rotated, and a shaft element connected to the goniometer, called "reference”.
  • such a last shaft reference element is mobile in rotation to take on a fixed position with respect to the element which is to be stopped with the nut or screw and acts as the origin, or "zero angle", for the further rotation to be carried out.
  • Another purpose is that of making a method and an electronic accessory for angular fastening of a nut or bolt which does not damage the threading of the relative bolt or nut and that ensures homogeneity of the torque of the mechanical component kept in its seat by such a nut or bolt.
  • Yet another purpose is that of being able to have a method and an electronic accessory for angular fastening of a nut or a bolt which allows the nut to be rotated in a very precise way.
  • Another purpose is that of making an electronic accessory for angular fastening of a nut or a bolt which is easy and fast to use.
  • Yet another purpose is that of being able to have an electronic accessory for angular fastening of a nut or bolt which can be used by common torque wrenches known today and by any other manoeuvring tool (wrenches, ratchets, accessories, etc.,).
  • an electronic accessory for angular fastening of a nut or bolt according to the present invention is shown with the numeral 10.
  • Such an electronic accessory 10 comprises a lower portion 12, to be coupled with the nut or bolt which is intended to be fastened, and an upper portion 11 to be coupled with the wrench which is intended to be used to rotate the aforementioned nut or bolt.
  • the aforementioned lower and upper portions 12, 11 can comprise shaped portions so as to match the element to which they are intended to be connected.
  • such lower and upper portions 12, 11 can foresee suitably shaped cavities, "female” type coupling, or suitably shaped protrusions, “male” type coupling.
  • the aforementioned lower and upper portions 12, 11 are portions with a longitudinal development aligned along an axis A and, if not made in a single piece, they are suitably connected to one another so that acting upon the upper portion 11 in rotation, an equivalent rotation is then imparted on the lower portion 12 and therefore on the nut or bolt intended to be fastened.
  • the electronic accessory 10 also comprises an electronic sensor, such as a gyroscope or an accelerometer or other, able to measure the rotation of the upper portion 11 around the aforementioned axis A which is imparted by the user through the wrench. As mentioned, such a rotation also corresponds to the rotation that the lower portion 12 imparts to the relative nut or bolt.
  • an electronic sensor such as a gyroscope or an accelerometer or other
  • signalling electronic means are foreseen, of the visual and/or sound and/or touch type, such as devices for emitting a luminous/visual signal 21, 21', like the LEDs shown in figures 1 and 2 , and/or vibrating devices and/or devices emitting a sound signal.
  • such signalling electronic means provide a signal during the angular fastening once the aforementioned preset "targeted” rotation angle has been reached.
  • such signalling electronic means can start emitting a signal even before the target angle has been reached, i.e., as it is being approached.
  • such means begin emitting a signal, for example, of the increasing type, once passed 80° of rotation.
  • the signal will have a different modularity, generally increasing and different from the signal of the reaching of the target, so that it clearly indicates the nearing and the reaching of the target.
  • the aforementioned signals can happen thanks to the connection present between the electronic sensor for measuring the rotation, the signalling electronic means and a processor which proceeds to continuously compare the measurement detected by the electronic sensor during the rotation of the electronic accessory 10 around the axis A and the preset "targeted" angle.
  • the aforementioned electronic sensor comprises means for measuring the rotation speed imparted on the upper portion around the axis A, which as mentioned, is the same as that imparted on the nut or bolt which is intended to be fastened, as well as means for integrating depending on the time, said measured speed instant by instant, such as the aforementioned microprocessor, so as to obtain a continuous control of the rotation of the electronic accessory 10.
  • the electronic accessory 10 provides an indication to the user, of a visual and/or sound and/or touch type, of when during rotation of the nut or bolt the targeted angle is nearing until the preset "targeted" angle has been reached.
  • the electronic accessory 10 comprises a containment structure 20, generally made from plastic and having minimum bulk arranged radially as a ring between the lower and upper portions 11, 12, in which the measurement sensor, the microprocessor as well as a possibly rechargeable battery, for supplying power to all the electronic devices present in the invention, are housed in the containment structure 20.
  • the aforementioned containment structure 20 is provided above with a display 17 which can provide an indication both of the preset "targeted" rotation angle and of the rotation angle measured continuously by the sensor, during the rotation imparted to the upper portion 11 around the axis A.
  • the aforementioned display as well as providing the preset "targeted" angle and the continuously measured rotation angle it can also provide an indication of the maximum rotation angle reached during the fastening.
  • Such an aspect is important in the case in which the targeted angle has been passed and subsequently an opposite rotation is being carried out.
  • the display will indicate the targeted angle 100°, the current position less than 100° and the maximum angle reached, or rather 110°.
  • buttons 14, 15 are foreseen as means for regulating and for resetting the "targeted" angle, one of which is to increase and the other is to decrease the "targeted” angle and a button 13 is foreseen, preferably showing the symbol "0", for resetting the measured angle.
  • an on/off button 16 is foreseen, connected to the battery and to the electronic devices of the electronic accessory 10.
  • the method for angular fastening of a nut and/or bolt through the use of an electronic accessory 10 as described above comprises the following simple steps:
  • the method comprises the following steps of:
  • such a method for angular fastening of a nut and/or bolt through the electronic accessory 10, as well as the turning on of the electronic accessory 10 itself also comprises a preliminary step of coupling the wrench to the upper portion 11 and the lower portion 12 with the nut or bolt; an intermediate step of reading the progress of the rotation imparted through the wrench on the display; and a final step, as well as switching the electronic accessory 10 itself off, of freeing the wrench from the upper portion 11 and the lower portion 12 from the nut or bolt.
  • the electronic accessory for angular fastening of a nut or bolt according to the present invention is simple, intuitive and fast to use, it allows the nut to be rotated in a very precise way and it can be used by common torque wrenches known today, but not only these, and therefore without requiring a high economic investment.
  • the electronic accessory for angular fastening of a nut or bolt for angular fastenings of the present invention thus conceived can undergo numerous modifications and variants, all covered by the same inventive concept; moreover, all the details can be replaced by technically equivalent elements. In practice the materials used, as well as their sizes, can be any according to the technical requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP09166084A 2008-07-23 2009-07-22 Methode und elektronisches Anbauteil zum Anziehen einer Mutter oder einer Schraube um einen Drehwinkel Withdrawn EP2147751A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT001338A ITMI20081338A1 (it) 2008-07-23 2008-07-23 Metodo ed accessorio elettronico per il serraggio angolare di un dado o di un bullone

Publications (1)

Publication Number Publication Date
EP2147751A1 true EP2147751A1 (de) 2010-01-27

Family

ID=40848835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09166084A Withdrawn EP2147751A1 (de) 2008-07-23 2009-07-22 Methode und elektronisches Anbauteil zum Anziehen einer Mutter oder einer Schraube um einen Drehwinkel

Country Status (2)

Country Link
EP (1) EP2147751A1 (de)
IT (1) ITMI20081338A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2394792A1 (de) * 2010-06-09 2011-12-14 Eclatorq Technology Co., Ltd. Externgekoppelte elektronische Winkelmessvorrichtung
US8886492B2 (en) 2011-09-23 2014-11-11 Brown Line Metal Works, Llc Digital angle meter
US8918292B2 (en) 2011-09-23 2014-12-23 Brown Line Metalworks, Llc Digital angle meter
CN112824827A (zh) * 2019-11-21 2021-05-21 斯凯孚公司 用于测量钩形扳手的角度调整的装置、系统和方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19581468T1 (de) * 1994-12-01 1997-01-02 Snap On Tools Corp Drehmomentschlüssel
US20030065456A1 (en) * 2001-09-28 2003-04-03 Spx Corporation Torque angle sensing system and method with angle indication

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19581468T1 (de) * 1994-12-01 1997-01-02 Snap On Tools Corp Drehmomentschlüssel
US20030065456A1 (en) * 2001-09-28 2003-04-03 Spx Corporation Torque angle sensing system and method with angle indication

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2394792A1 (de) * 2010-06-09 2011-12-14 Eclatorq Technology Co., Ltd. Externgekoppelte elektronische Winkelmessvorrichtung
US8886492B2 (en) 2011-09-23 2014-11-11 Brown Line Metal Works, Llc Digital angle meter
US8918292B2 (en) 2011-09-23 2014-12-23 Brown Line Metalworks, Llc Digital angle meter
CN112824827A (zh) * 2019-11-21 2021-05-21 斯凯孚公司 用于测量钩形扳手的角度调整的装置、系统和方法

Also Published As

Publication number Publication date
ITMI20081338A1 (it) 2010-01-24

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