EP1404491B1 - Visseuse fonctionnant sous pression et pourvue d'une section de mesure - Google Patents

Visseuse fonctionnant sous pression et pourvue d'une section de mesure Download PDF

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Publication number
EP1404491B1
EP1404491B1 EP02754816A EP02754816A EP1404491B1 EP 1404491 B1 EP1404491 B1 EP 1404491B1 EP 02754816 A EP02754816 A EP 02754816A EP 02754816 A EP02754816 A EP 02754816A EP 1404491 B1 EP1404491 B1 EP 1404491B1
Authority
EP
European Patent Office
Prior art keywords
shaft
housing
measuring section
power wrench
cavity
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
EP02754816A
Other languages
German (de)
English (en)
Other versions
EP1404491A1 (fr
Inventor
Paul-Heinz Wagner
Ulf Sittig
Bernd Thelen
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.)
Wagner Vermoegensverwaltungs GmbH and Co KG
Original Assignee
Wagner Vermoegensverwaltungs GmbH and Co KG
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
Priority claimed from DE20111326U external-priority patent/DE20111326U1/de
Application filed by Wagner Vermoegensverwaltungs GmbH and Co KG filed Critical Wagner Vermoegensverwaltungs GmbH and Co KG
Priority to EP09168184.1A priority Critical patent/EP2113341B1/fr
Publication of EP1404491A1 publication Critical patent/EP1404491A1/fr
Application granted granted Critical
Publication of EP1404491B1 publication Critical patent/EP1404491B1/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
    • B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
    • B25B23/1456—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers having electrical components
    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
    • B25B21/005—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type driven by a radially acting hydraulic or pneumatic piston
    • 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

Definitions

  • the invention relates to a pressure-operated hydraulic or pneumatic power wrench with a drive part and a functional part, wherein the functional part has a shaft driven by a ratchet lever, which has a driving device, and with a measuring section determining the torsion element.
  • a hydraulic power wrench of this type is known from DE 296 07 207 ,
  • the shaft extends transversely through the housing of the functional part. Outside the housing, a torsional measuring section is provided on the shaft.
  • a torsion sensor in the form of multiple strain gauges is mounted on the shaft.
  • the torsion sensor forms an electrical resistance arrangement whose resistance is dependent on the torsional moment.
  • a driving device At the end of the shaft is a driving device, which can be coupled with a tool or with a screw head.
  • This power wrench with measuring cell makes it possible to measure the torsional moment acting on the screw, whereby the tightening torque can be determined directly at the screw connection.
  • the invention has for its object to provide a pressure-operated power wrench with drive part, functional part and a measuring section, which has small dimensions in the axial direction of the screw and thus at low head height (above the screw) can be used.
  • the measuring section is formed in a cavity of the shaft or a hollow shaft connected therewith in a rotationally fixed manner.
  • the torsion sensor of the measuring section is attached to the inner wall of the cavity.
  • the torsion sensor There is no space for the torsion sensor on the outside of the shaft. This can overlap with a toothing, which is provided on the outside of the shaft and on which engages the ratchet lever.
  • the measuring section of the shaft does not require any additional length.
  • Added to that in the Cavity of the torsion sensor is protected from external influences is housed and that an additional encapsulation of the measuring section is not required.
  • an angle sensor may be provided which determines the angle of rotation of the shaft.
  • a direct rotation angle measurement also takes place at the same time.
  • the integration of the angle sensor in the power wrench, the flat construction is not significantly affected, so that the direct measurement can be performed even in extremely confined spaces. It has been found that the combination measurement of torque and angle of rotation allows the most accurate tightening process for highly sensitive screw connections.
  • the angle sensor is preferably arranged in a cap which encloses the one end of the shaft. In this way, there is a protection of the angle sensor from mechanical damage and contamination.
  • the lateral extension of the housing can be kept relatively small by the cap. Through the cap, a data transmission can take place, either by means of slip rings or by wireless transmission.
  • the power screwdriver after the Figures 1 and 2 has a drive part 10 and a functional part 11.
  • the drive part 10 is replaceably attached to the functional part 11.
  • the driving part 10 includes a hydraulic cylinder (not shown) in which a piston is slidable.
  • the drive part 10 has on the cylinder housing 12 a pivotable connection device 13 for hydraulic hoses.
  • the functional part 11 has a housing 14, which here consists of two assembled housing halves 14a and 14b.
  • a housing 14 In the housing 14 there is a cavity 15, in which a (not shown) ratchet lever of the drive member 10 can be pivoted back and forth.
  • a shaft 17 In a transverse bore 16 which extends through the housing 14, a shaft 17 is rotatably mounted.
  • This shaft 17 has in the interior of the housing 14 has a circumferential toothing 18, in which engages a toothing of the ratchet lever. This way everyone gets Hub of the drive member 10, the shaft 17 is rotated about its axis by a certain angular amount. Then the return stroke of the ratchet lever, in which the shaft 17 is not taken.
  • the shaft 17 has at one end a driving device 20, which is designed here as a key nut 40 and forms a Einsteckaus Principleung 21 of hexagonal cross-section.
  • the Einsteckausnaturalung 21 is located in the protruding from the housing 14 part of the shaft 17 and extends into the housing 14 into it. In this way, the protruding from the housing part of the shaft can be kept relatively short.
  • the insertion recess 21 merges into a cavity 22 which is formed in the shaft 17.
  • the torsion sensor 23 is in the form of strain gauges, which are glued to the peripheral wall.
  • an inwardly projecting annular flange 24 which protects the torsion sensor 23 against external interference.
  • the cavity 22 forms an axial extension of the Einsteckaus Principleung 21.
  • the Einsteckausnaturalung 21 When the Einsteckaus Principleung 21 is placed on a nut to be rotated, the cavity 22 can accommodate the protruding from the nut screw shank. Therefore, the insertion recess 21 may have a relatively small axial length.
  • the Einsteckaus supraung can also serve to receive the shaft of a key nut or be designed as a square opening.
  • the cavity 22 is adjoined by a frusto-conical transition 26, which opens into a receiving space 27 in which a data transmission element 28 is contained.
  • a cable channel 29 extends to the data transmission element 28.
  • the data transmission element 28 is, for example a slip ring assembly which connects an external cable 30 to the torsion sensor 23 which is rotatable with the shaft 17. Alternatively, the transmission can also be wireless.
  • the cable 30 leads to a cable connection 31 (FIG. Fig. 1 ), which is provided on a cantilever arm 32 of the housing 14 and to which a control or measuring device can be connected.
  • the hydraulic power wrench is further equipped with a rotation angle measuring device 33.
  • This has a code disk 34 which is fixed on the Einsteckaus Principleung 21 remote from the end of the shaft 17, and an angle sensor 35 which responds to the lines of the code disk 34 and thereby determines the angle of rotation of the shaft.
  • the angle sensor 35 consists of a fork-type photoelectric sensor into which protrudes the code disk 34 projecting radially from the shaft.
  • the angle sensor 35 is contained in a cap 36 which is mounted on a part of the housing 14 and fastened with screws 37.
  • the cap 36 surrounds the rear end of the shaft 17 facing away from the Einsteckaus originallyung 21 and at the same time forms a protective housing for this shaft end and the angle measuring device 33. From the angle sensor 35 leads a cable 38 to the cable terminal 31, so that both the torsion sensor 23 and the Angle sensor 35 is electrically accessible to the cable connector 31.
  • the drive part 10 and the functional part 11 are each formed in the same manner as described with reference to FIG FIGS. 1 and 2 has been described. In each case, the power transmission from the shaft to the key nut is different, as will be explained below.
  • the shaft 17 is arranged in the housing over its entire length.
  • a driving device 20a in the form of a splined toothing, which engages with a corresponding external toothing of a key nut 40.
  • the key nut 40 has a hexagonal insertion recess 21 in a widened head 41.
  • the head 41 extends partially into the housing 14.
  • a hollow shaft 42 connects.
  • This hollow shaft has an outer wedge toothing which engages with the driving device 20a of the shaft 17.
  • the drive torque is transmitted from the shaft 17 to the hollow shaft 42 and from there via the measuring section 25 to the head 41 of the key nut 40.
  • the head 41 is recessed in the housing 14, so that the axial length of the power wrench can be kept extremely short.
  • Fig. 4 corresponds to that of Fig. 3 , but with the difference that the torsion sensor 23 is arranged on the inside of the hollow shaft 42. Electrical Connecting cables can be easily guided through the hollow shaft to the torsion sensor.
  • the shaft 17 projects out of the housing 14 towards the rear end.
  • a spline toothing 20 a which engages with a corresponding driving device 20 a on the outside of an intermediate shaft 44.
  • the intermediate shaft extends to the front through the housing 14 and it has in its front region an internal spline 45 and in its rear region a bearing bore 46th
  • the key nut 40 has a head 41 with a Einsteckaus predominantlyung 21. At this head, a hollow shaft 42 connects, on which a splined portion is provided, which engages with the spline 45 of the intermediate shaft 44.
  • the hollow shaft 42 is followed by a hollow shaft section 47, which is mounted in the bearing bore 46.
  • the measuring section 25 In the area between the two splines 20a and 45 is the measuring section 25, with the torsion sensor 23 mounted in an outer groove of the intermediate shaft 44.
  • Fig. 5 can also be modified so that the torsion sensor 23 is contained on the inner wall of the intermediate shaft 44 in a recess.
  • Fig. 6 shows an embodiment in which the key nut 40 is connected to a hollow shaft 42 which engages in an inner driving device 20a of the shaft 17.
  • the shaft 17 extends across the width of the housing 14, but does not substantially surmount this.
  • the key nut 40 forms with the hollow shaft 42 a structural unit, which can be pulled out of the shaft 17 in total.
  • the measuring section 25 is located on the keyed nut 40 in the area between the insertion recess 21 and the hollow shaft 42.
  • electrical wires 48 extend through the hollow shaft to a data transmission element 28, which operates in the same way as in FIG Fig. 2 is arranged, but here is located inside the hollow shaft 42.
  • the power wrench is equipped with a rotation angle measuring device 33 which has a code disk 34 seated on the hollow shaft 42 and a housing-fixed angle sensor 35.
  • Fig. 7 is different from that of Fig. 6 only in that the torsion sensor 23 is arranged on the outside of the measuring section 25. Through the hollow shaft 42 performs a bore 46 for carrying the coming of the torsion sensor cable 23 into the interior of the hollow shaft.
  • Fig. 8 shows an embodiment in which the key nut 40 is extended with a hollow shaft 42 which includes a measuring section 25, wherein the torsion sensor 23 is arranged in the interior of the hollow shaft 42.
  • the hollow shaft 42 is connected to an intermediate shaft 49, which engages in an inner driving device 20 a of the shaft 17. Through the intermediate shaft 49, the cable coming from the torsion sensor 23 passes through to emerge at the rear.
  • Fig. 9 is different from the one of Fig. 8 only in that the torsion sensor 23 is arranged on the outside of the measuring section 25. From there, a bore 46 leads into the interior of the hollow shaft 42.

Landscapes

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

Abstract

La visseuse selon l'invention comprend une partie fonctionnelle (11) pourvue d'un boîtier (14) à travers lequel un arbre (17) fait saillie. L'arbre (17) comporte une denture (18) dans laquelle s'engrène un levier à cliquet de la partie fonctionnelle (11). Une denture d'arbre cannelé (20) de l'arbre (17) présente un évidement d'insertion (21) qui se transforme en une cavité (22). La cavité (22) contient un capteur de torsion (23) sur sa paroi et forme une section de mesure (25) située dans la zone de l'arbre (17) recouverte par le boîtier (14). Une mesure de torsion est effectuée dans la section de mesure (25). Comme la section de mesure (25) est située dans la zone de l'arbre recouverte par le boîtier (14), l'arbre (17) est relativement court de sorte que, dans des conditions de vissage spatiales étroites, il peut être utilisé avec une faible hauteur de tête au-dessus de la vis. La visseuse selon l'invention comprend également un dispositif de mesure d'angle (33), ce qui permet de disposer simultanément du moment de rotation et de l'angle de rotation qui peuvent servir à la commande et à l'enregistrement.

Claims (6)

  1. Visseuse fonctionnant sous pression comprenant une partie d'entrainement (10) et une partie de fonctionnement (11) avec un boitier (14) comprenant un levier à cliquet entrainé par ladite partie d'entrainement (10), ledit levier à cliquet entrainant un arbre (17) s'étendant transversalement à travers ledit boitier (14), ledit arbre comprenant un dispositif de gond (20; 20a), et comprenant une section de mesure (25) déterminant le moment de torsion, caractérisée en ce que ladite section de mesure (25) est formée dans un creux (22) de l'arbre (17) ou d'un arbre creux (42) fixé à celui d'une manière résistant à la torsion.
  2. Visseuse selon la revendication 1, caractérisée en ce que ledit creux (22) joint directement à une cavité d'insertion (21) dudit dispositif de gond (20).
  3. Visseuse selon les revendications 1 et 2, caractérisée en ce qu'un capteur d'angle (35) est prévu au boitier (14), ledit capteur déterminant l'angle de rotation de l'arbre (17).
  4. Visseuse selon la revendication 3, caractérisée en ce que ledit capteur d'angle (35) est prévu dans un capuchon (36) enfermant l'une des extrémités de l'arbre (17).
  5. Visseuse selon l'une quelconque des revendications 3-4, caractérisée en ce que ledit capteur d'angle (35) coopère avec un disque de code (34) montée sur l'extrémité de l'arbre (17).
  6. Visseuse selon l'une quelconque des revendications 1-5, caractérisée en ce qu'un élément transmetteur de données (28) est disposé à l'extrémité de l'arbre (17).
EP02754816A 2001-07-07 2002-07-03 Visseuse fonctionnant sous pression et pourvue d'une section de mesure Expired - Lifetime EP1404491B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09168184.1A EP2113341B1 (fr) 2001-07-07 2002-07-03 Visseuse sous pression

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE20111326U DE20111326U1 (de) 2001-07-07 2001-07-07 Hydraulischer Kraftschrauber
DE20111326U 2001-07-07
DE20112833U 2001-08-02
DE20112833U DE20112833U1 (de) 2001-07-07 2001-08-02 Druckbetriebener Kraftschrauber
PCT/EP2002/007357 WO2003006208A1 (fr) 2001-07-07 2002-07-03 Visseuse fonctionnant sous pression et pourvue d'une section de mesure

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP09168184.1A Division EP2113341B1 (fr) 2001-07-07 2002-07-03 Visseuse sous pression
EP09168184.1 Division-Into 2009-08-19

Publications (2)

Publication Number Publication Date
EP1404491A1 EP1404491A1 (fr) 2004-04-07
EP1404491B1 true EP1404491B1 (fr) 2011-06-08

Family

ID=26057087

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02754816A Expired - Lifetime EP1404491B1 (fr) 2001-07-07 2002-07-03 Visseuse fonctionnant sous pression et pourvue d'une section de mesure

Country Status (4)

Country Link
US (1) US7021179B2 (fr)
EP (1) EP1404491B1 (fr)
JP (1) JP4282476B2 (fr)
WO (1) WO2003006208A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060243464A1 (en) * 2005-04-29 2006-11-02 Sdgi Holdings, Inc. Torque and angular rotation measurement device and method
SE531646C2 (sv) * 2007-10-17 2009-06-16 Atlas Copco Tools Ab Skruvdragare med organ för övervakning av en reaktionsarm
CN102759308B (zh) * 2011-04-26 2016-12-14 Asm自动化传感器测量技术有限公司 具有卷尺的测量环以及用于布置卷尺的方法
KR101318901B1 (ko) * 2013-04-29 2013-10-16 이종한 너트의 토크 시험용 지그 및 그의 가공방법
CN103495861B (zh) * 2013-10-21 2016-01-27 成都凯恩机电设备有限公司 螺栓紧固系统的实现方法
US10378979B2 (en) 2013-12-27 2019-08-13 Atlas Copco Industrial Technique Ab Power tool
DE102015103903B4 (de) * 2015-03-17 2024-04-11 Juko Technik Gmbh Kraftschrauber mit direkter Drehwinkel- und/oder Drehmomentmessung
KR102414904B1 (ko) * 2020-04-17 2022-07-01 (주)볼팅마스타 유압 토크 렌치

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49127300A (fr) * 1973-04-06 1974-12-05
FR2256803A1 (en) * 1974-01-03 1975-08-01 Abdellatif Ala Tool for turning car wheel nuts - has socket spanner in pinned triangle with hydraulic jack as one arm
DE3468358D1 (en) * 1983-08-09 1988-02-11 Staiger Mohilo & Co Gmbh Ratchet wrench for driving screws
JPS61100377A (ja) * 1984-10-22 1986-05-19 ジヨン　ケイ　ユンカ−ス 流体圧レンチ
US4794826A (en) * 1986-01-27 1989-01-03 Franks Neal S Hydraulic powered wrench
US4796492A (en) * 1988-05-20 1989-01-10 Liou Mou Tang Clutch type socket wrench
DE3922860A1 (de) * 1989-07-12 1991-01-17 Bosch Gmbh Robert Messeinrichtung zur bestimmung des drehmoments
JPH03264271A (ja) * 1990-03-14 1991-11-25 Hitachi Ltd トルク値管理ボルト自動締付装置
JP3066102B2 (ja) * 1991-05-27 2000-07-17 株式会社東日製作所 ボルト軸力測定可能なボルト締結工具
DK0634965T3 (da) * 1993-01-22 2001-06-18 John K Junkers Muffe til drejning af en gevindskåret forbindelsesdel ved hjælp af et motordrevet værktøj
JP3000185B2 (ja) * 1993-04-21 2000-01-17 株式会社山崎歯車製作所 インパクトレンチによるボルト締結方法
EP0636458B1 (fr) * 1993-06-04 1998-03-11 Ohmi, Tadahiro Dispositif de serrage
JPH09285973A (ja) * 1996-04-19 1997-11-04 Shibaura Eng Works Co Ltd 締結機
DE29607207U1 (de) * 1996-04-20 1997-08-21 Wagner Paul Heinz Hydraulischer Kraftschrauber
JPH1177555A (ja) * 1997-09-05 1999-03-23 Teac Corp トルクレンチ
US6298752B1 (en) * 1999-06-25 2001-10-09 John K. Junkers Continuous fluid-operated wrench

Also Published As

Publication number Publication date
JP4282476B2 (ja) 2009-06-24
US20040187650A1 (en) 2004-09-30
WO2003006208A1 (fr) 2003-01-23
JP2004533939A (ja) 2004-11-11
US7021179B2 (en) 2006-04-04
EP1404491A1 (fr) 2004-04-07

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