EP0758288B1 - Emetteur de signaux, notamment a destination d'une unite commande par ultrasons pour le reserrage de raccords a vis - Google Patents

Emetteur de signaux, notamment a destination d'une unite commande par ultrasons pour le reserrage de raccords a vis Download PDF

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Publication number
EP0758288B1
EP0758288B1 EP96901715A EP96901715A EP0758288B1 EP 0758288 B1 EP0758288 B1 EP 0758288B1 EP 96901715 A EP96901715 A EP 96901715A EP 96901715 A EP96901715 A EP 96901715A EP 0758288 B1 EP0758288 B1 EP 0758288B1
Authority
EP
European Patent Office
Prior art keywords
component
bearing
relative
conductor
signal transmission
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 - Lifetime
Application number
EP96901715A
Other languages
German (de)
English (en)
Other versions
EP0758288A1 (fr
Inventor
Michael Habele
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0758288A1 publication Critical patent/EP0758288A1/fr
Application granted granted Critical
Publication of EP0758288B1 publication Critical patent/EP0758288B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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 invention relates to a device Signal transmission according to the preamble of claim 1. It Such a device is already known (EP 467 262 A1), which accommodated one in a drive spindle first conductor for contacting a vibrating body and a second arranged outside the drive spindle Has conductor for contacting a control device. The signal transmission from the first to the second conductor takes place touching by sliding contacts, but it can also non-contact inductive or capacitive. In each Traps are separate signal transmission means required.
  • the device according to the invention with the characteristic Features of claim 1 has the advantage that the signal transmission without complex, separate Signal transmission means takes place. That way is a simple and compact structure of the device for Signal transmission possible.
  • Figure 1 shows a device for Signal transmission in a screw device for ultrasonic controlled tightening of screw connections
  • Figure 2 is an enlarged view of a II designated section of Figure 1.
  • 10 is a screw device for ultrasound-controlled tightening of screw connections designated.
  • a screw device 10 is in a screw connection shown schematically in Figure 1 11 a possibly existing prestressing force according to a known one Ultrasonic transit time measurement method determined and in one Control device 13 as a control variable for controlling the Tightening process. Because of the high Accuracy with which the screw connection 11 existing preload can be determined can be very tight Tolerances with regard to the screw setpoint values to be achieved be achieved.
  • the screwing device 10 points to the electrical connection a vibrating body 12 with the control device 13 and vice versa connecting lines 14, 15.
  • Vibrating body 12 is, for example, a Piezo crystal with the appropriate electrical excitation generates high-frequency acoustic vibrations and into the Screw connection 11 conducts.
  • the screwing device 10 is provided with a rotating spindle 19 provided which in bearings 20, 21 opposite one hollow cylindrical housing part 22 is mounted.
  • a rotating spindle 19 On hers an end 23 facing a drive motor, not shown is the rotary spindle 19 with means 24 for rotary driving equipped, for example as a receiving opening 18 for an outer polygon are formed.
  • the opening 18 is an external polygon, not shown Drive shaft of a drive motor can be inserted.
  • the screw connection 11 facing end 25 forms the rotating spindle 19 has a tool holder 26, on which a Figure 1 screwing tool, not shown, for example a hexagon nut, is attachable.
  • the Connection lines 14, 15 form a first conductor 14, which is partially housed in the housing part 22 and its Radially protruding wall.
  • a second conductor 15 is partially housed within the rotating spindle 19.
  • a Section 15a of the second conductor 15 extends through the wall the rotary spindle 19 radially and a section 15b the rotary spindle 19 in an axial through opening 27 for End 15 of the rotary spindle 19 out.
  • FIG. 2 shows a reference number II in FIG. represents a detail indicated by dashed lines. Is clearly recognizable in the housing part 22 by means of the Bearing point 21 rotatably mounted rotary spindle 19, inside the second conductor 15 with its sections 15a and 15b is housed.
  • the sections 15b and 15c are in one Junction 30 by means of a screw 31 and Metal sleeve 32 electrically connected.
  • An isolator 33 fixes the section 15b of the conductor 15 within the Through opening 27 in the rotary spindle 19.
  • the section 15b of the conductor 15 is covered by an insulating layer surrounding cable piece formed.
  • the section 15a is also of the conductor 15 surrounded with an insulating layer.
  • the electrical contacting of the first conductor 14 with the second conductor 15 takes place via the bearing 21, which as commercially available rolling bearing is formed.
  • Camp 21 has an outer ring 34 and an inner ring 35 intermediate rolling elements 36, in particular balls, on.
  • Outer ring 34, inner ring 35 and rolling elements 36 are made of made of electrically conductive material.
  • the bearing 21 can additionally on one or both sides with sealing or cover disks 37 be provided, the bearing 21 against the entry of dust and prevent leakage of lubricant.
  • the rotary spindle 19 is offset towards its end 23. On the settled Spindle piece 38 is an insulating sleeve 39 placed with the rotary spindle 19 is connected in a rotationally fixed manner, e.g. is glued.
  • the inner ring 35 of the bearing 21 is seated on the insulating sleeve 39 and becomes electrical from the portion 15a of the second conductor 15 contacted.
  • the insulating sleeve 39 has this in the area of a federal 40, which acts as an axial stop for the inner ring 35 is used, a bore 41 through which one end of the Portion 15a protrudes to the inner ring 35 and the Inner ring 35 contacted.
  • the outer ring 34 of the bearing 21 also sits in an annular insulating body 42 which is arranged without play in the housing part 22 and a radial inwardly projecting collar 45 as an axial stop for forms the outer ring 34.
  • Insulating body 42 held by a radial pin 43, the engages radially in a longitudinal groove 44 of the insulating body 42 and secure it against twisting. Is in the insulating body 42 also provided a bore 46 through which the first conductor 14 extends to the outer ring 34 and this electrically contacted.
  • the resulting resistance can, for example, by using an electrical good conductive lubricant can be reduced.
  • the capacitive Coupling component particularly good to carry.
  • the bearing 20 is without this Insulation between housing part 22 and rotary spindle 19 arranged.
  • By isolating the bearing 21 from the Rotary spindle 19 and the housing part 22 can be overall implement a closed circuit.
  • the invention is not based on the embodiment shown limited.
  • an inventive one Signal transmission also via another electrically conductive Bearings, e.g. Allow plain bearings, thrust bearings.
  • the Signal transmission means 16 can for example also in a measuring shaft for torque detection can be provided.
  • the invention is also very general for signal transmission components movable relative to each other, from which a first component corresponding to the housing part 22 a second component corresponding to the rotary spindle 19 is rotatably and / or slidably mounted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Claims (9)

  1. Installation pour transmettre un signal entre deux pièces (19, 22) mobiles l'une par rapport à l'autre, notamment pour transmettre un signal dans un dispositif de vissage (10) de liaisons vissées de façon commandée par des ultrasons, comprenant :
    une première pièce (22) logeant au moins partiellement un premier conducteur électrique (14) dans la première pièce (22), isolé électriquement par rapport à celle-ci,
    une seconde pièce (19), mobile par rapport à la première pièce (22), logeant au moins en partie un second conducteur isolant (19) isolé électriquement par rapport à cette pièce,
    des moyens de transmission de signal (16) permettant de transmettre le signal du premier conducteur (14) au second conducteur (15) et inversement,
    caractérisée en ce que
    les moyens de transmission de signaux (16) sont constitués par au moins un palier (21) notamment un palier à roulement par lequel la première pièce (22) est montée coulissante ou à rotation axialement et/ou dans la direction périphérique par rapport à la seconde pièce (19),
    le palier (21) est au moins en partie en matière conductrice électrique,
    le palier (21) est isolé électriquement à la fois par rapport à la première pièce (22) et par rapport à la seconde pièce (19) et
    le premier conducteur (14) et le second conducteur (15) sont reliés électriquement au palier (21).
  2. Installation selon la revendication 1,
    caractérisée en ce que
    la première pièce (22) est une partie de boítier et la seconde pièce (19) est une broche tournante.
  3. Installation selon la revendication 1 ou 2,
    caractérisée en ce que
    les conducteurs (14, 15) relient électriquement, par le palier (21), une installation de commande (13) à une installation de mesure (12) du dispositif de vissage (10).
  4. Installation selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le palier (21) est un palier de roulement comprenant une cage extérieure (34), une cage intérieure (35) avec entre elles des organes de roulement (35), ces différentes pièces sont en matière conductrice électrique.
  5. Installation selon la revendication 4,
    caractérisée par
    un organe isolant (42) annulaire entre la première pièce (22) et la cage extérieure (34) du palier (21) et par un manchon isolant (41) entre la seconde pièce (15) et la cage intérieure (35) du palier (21).
  6. Installation selon la revendication 5,
    caractérisée en ce que
    le manchon isolant (41) est solidaire en rotation de la seconde pièce (19) et le corps isolant (42) est solidaire en rotation de la première pièce (22).
  7. Installation selon la revendication 6,
    caractérisée en ce que
    la seconde pièce (19) comprend l'extrémité cylindrique décolletée (23) à laquelle est collé le manchon isolant (41).
  8. Installation selon l'une quelconque des revendications 5 à 7,
    caractérisée en ce que
    le manchon isolant (41) et le corps isolant (42) sont munis de collerettes (40, 45) servant chaque fois de butées axiales pour la cage intérieure (35) et la cage extérieure (34).
  9. Installation selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la première pièce (22) est reliée électriquement à la seconde pièce (19) par un second palier (20).
EP96901715A 1995-03-03 1996-02-09 Emetteur de signaux, notamment a destination d'une unite commande par ultrasons pour le reserrage de raccords a vis Expired - Lifetime EP0758288B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19507389 1995-03-03
DE19507389A DE19507389A1 (de) 1995-03-03 1995-03-03 Einrichtung zur Signalübertragung, insbesondere für eine Schraubvorrichtung zum ultraschallgesteuerten Anziehen von Schraubverbindungen
PCT/DE1996/000202 WO1996027481A1 (fr) 1995-03-03 1996-02-09 Emetteur de signaux, notamment a destination d'une unite commande par ultrasons pour le reserrage de raccords a vis

Publications (2)

Publication Number Publication Date
EP0758288A1 EP0758288A1 (fr) 1997-02-19
EP0758288B1 true EP0758288B1 (fr) 1998-10-28

Family

ID=7755504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96901715A Expired - Lifetime EP0758288B1 (fr) 1995-03-03 1996-02-09 Emetteur de signaux, notamment a destination d'une unite commande par ultrasons pour le reserrage de raccords a vis

Country Status (6)

Country Link
US (1) US5874681A (fr)
EP (1) EP0758288B1 (fr)
JP (1) JPH09512492A (fr)
BR (1) BR9605924A (fr)
DE (2) DE19507389A1 (fr)
WO (1) WO1996027481A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6508313B1 (en) 2001-07-23 2003-01-21 Snap-On Technologies, Inc. Impact tool battery pack with acoustically-triggered timed impact shutoff
JP2004330342A (ja) * 2003-05-07 2004-11-25 Kumamoto Technology & Industry Foundation ねじ類の締付け方法、及びそれに用いられる装置
SE533830C2 (sv) * 2009-06-11 2011-02-01 Atlas Copco Tools Ab Mutterdragare med växelhus och parametergivare
TW201121707A (en) * 2009-12-31 2011-07-01 Metal Ind Res & Dev Ct Modularized ultrasonic vibration machining device.
DE102011104901B4 (de) * 2011-06-16 2018-04-12 C. & E. Fein Gmbh Kraftgetriebene Handwerkzeugmaschine
CN112460127A (zh) * 2020-11-09 2021-03-09 南昌大学 一种带有振动式自充电电池的智能螺栓

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572447A (en) * 1968-11-12 1971-03-30 Ingersoll Rand Co Torque measuring system for impact wrench
JPS5774631A (en) * 1980-10-29 1982-05-10 Brother Ind Ltd Detector for load torque
DE8414766U1 (de) * 1984-05-15 1984-09-13 Deutsche Gardner-Denver Gmbh, 7081 Westhausen Schrauber
US4676109A (en) * 1984-11-13 1987-06-30 Sps Technologies Load indicating member, apparatus and method
EP0345199A3 (fr) * 1988-04-06 1990-05-09 Nikolaos Tsagas Dispositif pour indiquer en cours de route ou à l'arrêt, sur le tableau de bord, à l'intérieur du compartiment de conduite d'un véhicule, les limites de pression minimales et maximales (seuils de sécurité haut et bas) des pneumatiques d'un véhicule
US4890501A (en) * 1989-03-23 1990-01-02 Schumacher Larry L Torque transducer for electric motors
EP0467262A1 (fr) * 1990-07-20 1992-01-22 Kamax-Werke Rudolf Kellermann GmbH & Co. KG Dispositif pour serrer un ensemble tête/boulon sous l'effet d'ultra-sons dans des buts de montage
DE4025430A1 (de) * 1990-08-10 1992-02-13 Psm Drucklufttechnik Vertrieb Drehschrauberkopf
FR2683903B1 (fr) * 1991-11-15 1993-12-31 Renault Regie Nale Usines Dispositif capteur a ultrasons pour mesure de tension dans les vis.
DE4329200C2 (de) * 1993-08-31 2001-08-23 Bosch Gmbh Robert Motorgetriebener Schrauber

Also Published As

Publication number Publication date
JPH09512492A (ja) 1997-12-16
US5874681A (en) 1999-02-23
DE19507389A1 (de) 1996-09-05
BR9605924A (pt) 1997-11-18
WO1996027481A1 (fr) 1996-09-12
DE59600731D1 (de) 1998-12-03
EP0758288A1 (fr) 1997-02-19

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