EP0758288A1 - Einrichtung zur signalübertragung, insbesondere für eine schraubvorrichtung zum ultraschallgesteuerten anziehen von schraubverbindungen - Google Patents
Einrichtung zur signalübertragung, insbesondere für eine schraubvorrichtung zum ultraschallgesteuerten anziehen von schraubverbindungenInfo
- Publication number
- EP0758288A1 EP0758288A1 EP96901715A EP96901715A EP0758288A1 EP 0758288 A1 EP0758288 A1 EP 0758288A1 EP 96901715 A EP96901715 A EP 96901715A EP 96901715 A EP96901715 A EP 96901715A EP 0758288 A1 EP0758288 A1 EP 0758288A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- bearing
- conductor
- signal transmission
- electrically
- 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.)
- Granted
Links
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 is based on a device for signal transmission according to the preamble of claim 1.
- a device for signal transmission is already known (EP 467 262 AI), which has a first conductor accommodated in a drive spindle for contacting an oscillating body and a second conductor arranged outside the drive spindle for contacting a control device.
- the signal transmission from the first to the second conductor takes place in a touching manner using sliding contacts, but it can also be done inductively or capacitively without contact. In any case, separate signal transmission means are required for this.
- the device according to the invention with the characterizing features of claim 1 has the advantage that the signal transmission takes place without complex, separate signal transmission means. That way is a simple and compact construction of the device for signal transmission possible.
- FIG. 1 shows a device for signal transmission in a screwing device for the ultrasound-controlled tightening of screw connections
- FIG. 2 shows an enlarged illustration of a section from FIG. 1 labeled II.
- 10 denotes a screwing device for the ultrasound-controlled tightening of screw connections.
- a prestressing force that may be present is determined in a screw connection 11 shown schematically in FIG. 1 according to a known ultrasonic transit time measuring method and is used in a control device 13 as a control variable for controlling the screwing process. Due to the high accuracy with which the prestressing force present in the screw connection 11 can be determined, very tight
- the screwing device 10 has for the electrical connection of a vibrating body 12 to the control device 13 and vice versa connecting lines 14, 15.
- the vibrating body 12 is, for example, a piezo crystal that generates high-frequency acoustic vibrations with appropriate electrical excitation and guides it into the screw connection 11. Conversely, the receives
- Piezo crystal echo vibrations from the screw connection 11 and converts them into associated electrical echo signals.
- excitation signals and echo signals in the schematically illustrated control device 13, the state of tension in the screw connection 11 and thus the current pretensioning force can be deduced in a known manner.
- the screwing device 10 is provided with a rotating spindle 19 which is mounted in bearings 20, 21 opposite a hollow cylindrical housing part 22.
- the rotary spindle 19 is equipped with means 24 for rotary driving, which are designed, for example, as a receiving opening 18 for an external polygon.
- a drive shaft of a drive motor, not shown, provided with an external polygon, can be inserted into the receiving opening 18.
- the rotating spindle 19 forms a tool holder 26, onto which a screwing tool, not shown in FIG. 1, for example a hexagon nut, can be plugged.
- the connecting lines 14, 15 form a first conductor 14, which is partially accommodated in the housing part 22 and extends radially through its wall.
- a second conductor 15 is partially housed within the rotating spindle 19.
- Section 15a of the second conductor 15 projects radially through the wall of the rotating spindle 19 and a section 15b passes through the rotating spindle 19 in an axial through opening 27 towards the end 15 of the rotating spindle 19.
- This is followed by a section 15c designed as a contact pin, by means of which the oscillating body 12 can be contacted in an electrically conductive manner.
- FIG. 2 shows a detail indicated by II in FIG. 1, indicated by dashed lines. Is clearly recognizable in the housing part 22 by means of the
- Bearing point 21 rotatably mounted rotary spindle 19, within which the second conductor 15 is accommodated with its sections 15a and 15b.
- the sections 15b and 15c are connected in an electrically conductive manner in a connection point 30 by means of a screw 31 and a metal sleeve 32.
- An insulator 33 fixes the section 15b of the conductor 15 within the passage opening 27 in the rotating spindle 19.
- the section 15b of the conductor 15 is formed by a cable section surrounding the insulating layer.
- the section 15a of the conductor 15 is also surrounded by an insulating layer.
- the electrical contacting of the first conductor 14 with the second conductor 15 takes place via the bearing 21, which is designed as a commercially available rolling bearing.
- the bearing 21 has an outer ring 34 and an inner ring 35 with roller bodies 36, in particular balls, lying between them. Outer ring 34, inner ring 35 and rolling elements 36 are made of electrically conductive material.
- the bearing 21 can additionally be provided on one or both sides with sealing or cover disks 37 which protect the bearing 21 against the entry of dust and the escape of lubricant.
- the rotary spindle 19 is offset towards its end 23. An insulating sleeve 39 is placed on the offset spindle piece 38, which is connected to the rotary spindle 19 in a rotationally fixed manner, for example is glued.
- the inner ring 35 of the bearing 21 is seated on the insulating sleeve 39 and is electrically contacted by section 15a of the second conductor 15.
- the insulating sleeve 39 has in the region of a collar 40, which serves as an axial stop for the inner ring 35, a bore 41 through which one end of the section 15a projects to the inner ring 35 and the
- Inner ring 35 contacted.
- the outer ring 34 of the bearing 21 is also seated in an annular insulating body 42 which is arranged in the housing part 22 without play and forms a radially inwardly projecting collar 45 as an axial stop for the outer ring 34.
- annular insulating body 42 which is arranged in the housing part 22 without play and forms a radially inwardly projecting collar 45 as an axial stop for the outer ring 34.
- Insulating body 42 held by a radial pin 43 which engages radially in a longitudinal groove 44 of the insulating body 42 and secures it against rotation.
- a bore 46 is also provided in the insulating body 42, through which the first conductor 14 extends to the outer ring 34 and makes electrical contact therewith.
- the resistance that arises in this case can be reduced, for example, by using an electrically highly conductive lubricant.
- the capacitive coupling component is particularly effective when transmitting high-frequency signals at lower speeds (less than 500 rpm).
- a further electrical contacting of the vibrating body 12, for example for the ground connection, is possible in a corresponding manner via the housing part 22, the bearing 20, the rotating spindle 19 and the screwing tool.
- the bearing 20 is arranged without insulation between the housing part 22 and the rotary spindle 19.
- the invention is not restricted to the exemplary embodiment shown.
- signal transmission according to the invention can also be made possible via another electrically conductive bearing, for example a slide bearing, axial bearing.
- Signal transmission means 16 can, for example, also be provided in a measuring shaft for torque detection.
- the invention can also be used quite generally for signal transmission in the case of components which are movable relative to one another, of which a first component corresponding to the housing part 22 is rotatably and / or displaceably mounted to a second component corresponding to the rotating spindle 19.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Description
Claims
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 (de) | 1995-03-03 | 1996-02-09 | Einrichtung zur signalübertragung, insbesondere für eine schraubvorrichtung zum ultraschallgesteuerten anziehen von schraubverbindungen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0758288A1 true EP0758288A1 (de) | 1997-02-19 |
EP0758288B1 EP0758288B1 (de) | 1998-10-28 |
Family
ID=7755504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96901715A Expired - Lifetime EP0758288B1 (de) | 1995-03-03 | 1996-02-09 | Einrichtung zur signalübertragung, insbesondere für eine schraubvorrichtung zum ultraschallgesteuerten anziehen von schraubverbindungen |
Country Status (6)
Country | Link |
---|---|
US (1) | US5874681A (de) |
EP (1) | EP0758288B1 (de) |
JP (1) | JPH09512492A (de) |
BR (1) | BR9605924A (de) |
DE (2) | DE19507389A1 (de) |
WO (1) | WO1996027481A1 (de) |
Families Citing this family (6)
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)
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 (de) * | 1988-04-06 | 1990-05-09 | Nikolaos Tsagas | Vorrichtung zur Anzeige minimaler und maximaler Druckgrenzen (unterer und oberer Sicherheitsschwellen) der Fahrzeugreifen während der Fahrt oder des Anhaltens auf dem Armaturenbrett eines Fahrzeuges im Kraftfahrzeuginnenraum |
US4890501A (en) * | 1989-03-23 | 1990-01-02 | Schumacher Larry L | Torque transducer for electric motors |
EP0467262A1 (de) * | 1990-07-20 | 1992-01-22 | Kamax-Werke Rudolf Kellermann GmbH & Co. KG | Vorrichtung zum Anziehen einer Schrauben/Mutter-Verbindung unter Ultraschalleinwirkung zu Montagezwecken |
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 |
-
1995
- 1995-03-03 DE DE19507389A patent/DE19507389A1/de not_active Withdrawn
-
1996
- 1996-02-09 JP JP8526514A patent/JPH09512492A/ja active Pending
- 1996-02-09 WO PCT/DE1996/000202 patent/WO1996027481A1/de active IP Right Grant
- 1996-02-09 DE DE59600731T patent/DE59600731D1/de not_active Expired - Lifetime
- 1996-02-09 US US08/700,514 patent/US5874681A/en not_active Expired - Lifetime
- 1996-02-09 BR BR9605924A patent/BR9605924A/pt not_active IP Right Cessation
- 1996-02-09 EP EP96901715A patent/EP0758288B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9627481A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH09512492A (ja) | 1997-12-16 |
BR9605924A (pt) | 1997-11-18 |
US5874681A (en) | 1999-02-23 |
DE59600731D1 (de) | 1998-12-03 |
EP0758288B1 (de) | 1998-10-28 |
DE19507389A1 (de) | 1996-09-05 |
WO1996027481A1 (de) | 1996-09-12 |
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