DE102010044823A1 - Screw spindle, particularly battery operated industrial hand screwdriver for use with radio module, has housing that is provided with drive side, torque receiver, gear, motor and rotor position sensor - Google Patents

Screw spindle, particularly battery operated industrial hand screwdriver for use with radio module, has housing that is provided with drive side, torque receiver, gear, motor and rotor position sensor

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Publication number
DE102010044823A1
DE102010044823A1 DE201010044823 DE102010044823A DE102010044823A1 DE 102010044823 A1 DE102010044823 A1 DE 102010044823A1 DE 201010044823 DE201010044823 DE 201010044823 DE 102010044823 A DE102010044823 A DE 102010044823A DE 102010044823 A1 DE102010044823 A1 DE 102010044823A1
Authority
DE
Germany
Prior art keywords
means
screw
screw spindle
screwing
data
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.)
Pending
Application number
DE201010044823
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German (de)
Inventor
Achim Kugler
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
Priority to DE201010044823 priority Critical patent/DE102010044823A1/en
Publication of DE102010044823A1 publication Critical patent/DE102010044823A1/en
Application status is Pending legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/147Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers

Abstract

The screw spindle has a housing (10) that is provided with a drive side (11), a torque receiver (12), a gear (13), a motor (14) and a rotor position sensor (15). The drive side is driven by the rotor and under utilization of the housing. An integrated screwing process controlling unit (16) is covered for the execution of a screwing process. An independent claim is also included for a method for operating a screw spindle.

Description

  • The invention relates to an industrial and electrically driven by a battery screw with housing.
  • Screw systems are known from the prior art. A screwing system is understood to mean the assembly of different components into an independent functional unit.
  • These components are usually realized by means of the following devices: Higher-level screwdriving controller (base station, screwdriver controller) for one or more screwdrivers, one power unit depending on the requirement for the power output of the spindle, one or more screwed spindles. The screw spindles usually include at least one output, a transmission and a motor. The output is driven by means of the engine and using the gearbox. In addition to the screw control, a PLC can be used to coordinate several tightening systems. Optionally, one or more industrial PCs and peripherals such as printers, etc., may be present to operate the tightening system.
  • The font WO 2008/088266 discloses a portable screwing tool which performs screwing operations by means of operating parameters predetermined by a superordinate screwdriving tool which is locally remote from the screwing tool. These operating parameters are wirelessly transmitted to the screwdriving tool by the screwing control by radio. Wired solutions are also known. The actual screwdriving process is stored in the control. This also executes the screwing process and controls the power unit and the measured value acquisition as well as the screwdriving tool according to the process signals.
  • Such screwing tools can not be used without a screwing control, since the intelligence required to carry out the screwing process is present in the external screwing control.
  • All of the aforementioned components of a tightening system must be maintained, programmed and subjected to maintenance. This is the more costly and error-prone the more components there are in a system. In addition, such systems are less flexible and highly localized because of the required proximity to the screw control (cable, radio connection).
  • The invention relates to a handheld wrench or a screw with housing, comprising an output, a torque transducer, a transmission, a motor and a rotor position sensor. The output is driven by the engine and using the gearbox. From the housing of the screw is also a complete and fully self-contained Schraubprozesssteuerung includes. This is used to carry out a completely self-contained screwing process, so that the screw spindle is at least temporarily self-sufficient and independent of a parent and locally remote screw process control operable.
  • Under a Schraubprozesssteuerung not only necessary to control or control of the output measures are to be understood, but also the coordination of all necessary for the implementation, monitoring and documentation of a complex screwing processes, as usually realized by superordinate and, for example, centrally mounted on a production line controls are.
  • For the monitoring of bolting systems and bolting processes, minimum requirements are defined by means of nouns and standards, whereby different categories are considered, which concern the risk for the case of the failure of the bolted connection.
    Category A: Indirect / immediate danger to life and limb
    Category B: lying down
    Category C: annoyance of the customer
  • These categories play an important role, especially in the automotive industry. Safety-relevant screw connections must be counted, documented and bolted with the correct preload force.
  • The implementation of such documentation requiring fittings with high availability and low installation, investment and maintenance costs is made possible by the invention, without a higher-level additional control would be mandatory. Optionally, such a controller can of course be additionally present and operated.
  • The intelligence for carrying out the complete screwing process is no longer distributed as in the prior art, but all components required for the screwing process are integrated into the screw spindle or a handheld screwdriver with a screwing spindle according to the invention.
  • The integrated screw process control comprises as components at least one microprocessor, a measuring module and a servo amplifier. The input of the measuring module is connected to the output of the torque transducer. Of the Servo amplifier is connected to the output of the rotor position sensor. The motor is controllable taking into account the rotor position and the output data of the torque transducer by means of a predeterminable by the microprocessor screwing process. An external control or external measurement data processing is thus superfluous.
  • Input / output units are included as further components. By means of the input / output units, an interface to an operator or to an optionally optionally available and higher-level screw process control is realized. The integrated screw process control can thus load or accept all operations to be carried out for a screwing process by the higher-level screw process control or by a user before it executes this screwdriving process independently and independently of the higher-level screw process control. In particular, a visualization of relevant with respect to the screwing data for the operator is provided.
  • As a further component, a permanently integrated non-volatile data memory is included, in which the relevant data for the screwing in the form of torque setpoint or torque predetermine or tolerance specifications and the like can be stored for processing by means of the microprocessor. Alternatively or additionally, a removable storage medium for receiving such a data storage may be present (micro SD card).
  • The components of the arrangement according to the invention are connected transversely to one another by means of an integrated data bus for realizing a communication between the components. The integrated screw process controller can thus coordinate and communicate with all components and retrieve data therefrom to process this data.
  • Preferably, a radio module is included, by means of which an at least temporarily active and wireless communication connection (eg WLAN) to a higher-level screw process control can be realized in order to transmit the data and information for the self-sufficient screwing process to the integrated screw process control as described. It is also conceivable to integrate the apparatus according to the invention in a wired or wireless network with its own IP address, so that, for example, access via the Internet / Intranat becomes possible.
  • A radio network strength detector and mode switching means are also preferably included. The screw spindle is constructed in such a way that, taking into account the radio network coverage determined by means of the radio network field strength detector, an automatic switching possibility between the higher-level screw process control and the integrated screw process control is realized.
  • By integrating the complete screwdriving process control into the nutrunner, it is no longer necessary to maintain radio contact with the higher-level screwdriving process control. The screwdriver can be programmed once by means of the parent screw process control and be used at loss of wireless connection at any location and, for example, hard to reach vehicle body parts or in the aircraft maintenance and the like. After restoration of the radio connection, the results of the screwing operation can be sent from the integrated screwdriving process control to the higher-level screwdriving process controller or an industrial PC or the like for the purpose of standard-compliant and regulatory documentation.
  • The screw spindle according to the invention could, for example, perform self-sufficient screwing and transmit the result curve of the screw connection to a PC by radio to display the curve on the PC display. The spindle is preferably part of an automatically measuring, industrial cordless screwdriver with radio module.
  • Since the screwdriver includes an integrated stand-alone screwdriving process control, this facilitates its handling considerably. No cable connections to the mounting locations must be made, nor must radio contact with the higher-level screw process control be maintained.
  • In particular, even when mounting within acting as faradayscher cage mounting locations, a screwdriving process can be performed reliably without wireless connection.
  • The invention is particularly suitable for use in aircraft part assembly or in automotive engineering.
  • 1 shows a hand screwdriver according to the invention.
  • The handheld screwdriver includes a housing 10 , The housing 10 in turn, includes at least one output 11 , a gearbox 13 and a motor 14 and preferably still a torque transducer 12 and a rotor position sensor 15 , The downforce 11 is by means of the engine 14 and using the gearbox 13 drivable. From the case 10 the screw spindle is an integrated one Schraubprozesssteuermittel 16 for carrying out a completely self-contained screwing process. The screw spindle or the hand screwdriver is at least temporarily self-sufficient and independent of a parent Schraubprozesssteuerung 28 operated. The hand screwdriver can handle this parent screw process control 28 or with other facilities 31 by radio 29 (Access point, router etc.) communicate as well as data with these facilities 28 . 31 replace (tightening program, result data and the like).
  • The screw process control means 16 comprises as components at least one microprocessor 17 with memory 17a or a storage device 17b and preferably additionally a measuring module 18 and a servo amplifier 19 , The input of the measuring module 18 is with the output of the torque transducer 12 connected 23 , The servo amplifier 19 is with the rotor position sensor 15 , by means of a connection 22 and with the measuring module 18 by means of another, separate connection 27 connected. The connection 27 is a data bus, which is a cross communication between the components 17 . 18 . 19 . 20 . 21 allows. The motor 14 can take into account the rotor position and the output data of the torque transducer 12 by means of a microprocessor 17 controlled screwing program. The microprocessor 17 reads the tightening program from the memory 17a or from one into the memory receiving device 17b inserted flash memory card.
  • Input / output units 20 Other components include a man-machine (eg screwdriver operator by keyboard and display) and / or a machine-machine interface (eg screwdriver PC through data interfaces), preferably with visualization of for the screwing process relevant data (eg by means of a color display) for the operator.
  • In the current state of the art, the screw spindle (wired or wireless) is controlled by a controller (which is usually installed firmly on a wall). The data are transmitted from the screw spindle (measured values, actual values) to the control unit where they are processed and compared with the target values (setpoints). When the target values are reached, the screw spindle is stopped and the achieved values are marked with an "OK" marking for the underlying screw connection and stored in a database.
  • It is thus possible to integrate a miniaturized control directly into the screw spindle. This eliminates the control located on the wall and also their wiring complexity. The screw spindle receives programs by radio and also transmits the result data by radio to a network of the user.
  • Another advantage of the invention is that it can be worked by the present in the screw complete process data even without radio contact to a parent screw and the screw is still able to execute the predetermined programs and possibly later the results by radio to the controller discontinued.
  • In summary, the Applicant's measuring wireless cordless screwdriver series based on the spindle according to the invention, with integrated control and with integrated radio interface, considerably increases the flexibility in flow production and in final assembly. Especially in tight interiors and hard to reach screw points and when running with products, the invention improves ergonomics with high productivity, because the workers are not obstructed by additional cable or the required range for screw control.
  • Applicant's wireless cordless screwdrivers based on the invention comprise all the necessary details for the realization of safety-critical screw connections such as result storage, result output and result documentation. An integrated transmitter transmits the screwing data by radio to a receiving station, for example, with the involvement of an access point. In the event of a short-term radio shadow occurring, the integrated control electronics buffers the data in the screwdriver and passes them on as soon as there is again a radio connection to the network. This ensures 100% documentation of all processes and ensures high availability and contributes significantly to process reliability.
  • The completely integrated control and power electronics virtually eliminate the division into several components connected via power and communication cables. A color display is available for parameterization and operator information on the screwdrivers. An integrated high-intensity LED always ensures optimal illumination of the screw point, even in changing light conditions. The colored background of the display (eg red / green) can be used to close the result (eg "not ok" / "ok") of the screw connection just made by the spindle.
  • Torques of up to 50 Nm are achieved with the invention, and lithium-ion batteries ensure safe operation.
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • WO 2008/088266 [0004]

Claims (10)

  1. Screw spindle, in particular battery-operated industrial handheld screwdriver with radio module, with housing ( 10 ), the housing ( 10 ) comprising an output ( 11 ), a torque transducer ( 12 ), a transmission ( 13 ), a motor ( 14 ) and a rotor position sensor ( 15 ), the output ( 11 ) by means of the engine ( 14 ) and using the transmission ( 13 ) is drivable, wherein of the housing ( 10 ) of the screw spindle an integrated Schraubprozesssteuermittel ( 16 ) for carrying out a completely self-contained screwing process is included, so that the screw at least temporarily self-sufficient and independent of a parent Schraubprozesssteuerung ( 28 ) is operable.
  2. Screwing spindle according to claim 1, wherein the screwing process control means ( 16 ) as components a microprocessor ( 17 ), a measuring module ( 18 ) and a servo amplifier ( 19 ), wherein the input of the measuring module ( 18 ) with the output of the torque transducer ( 12 ) connected ( 23 ) and where the servo amplifier ( 19 ) with the output of the rotor position sensor ( 15 ) connected ( 22 ), so that the engine ( 14 ) taking into account the rotor position and the output data of the torque transducer ( 12 ) by means of a microprocessor ( 17 ) predefinable screwing is controllable.
  3. Screw spindle according to claim 2, wherein an input unit and / or an output unit ( 20 ) are included as further components, by means of which an interface to an operator and / or a parent screw process control ( 28 . 31 ), in particular a visualization ( 30 ) relevant to the screwing process data for the operator.
  4. Screw spindle according to one of the preceding claims 2 or 3, wherein a data memory ( 17a ) and / or a receiving device ( 17b ) is included for a removable data memory, wherein the microprocessor ( 17 ) with the data memory ( 17a ) and / or the receiving device ( 17b ) is connected in such a way that all relevant data for the screwing process in the form of torque setpoint specifications or torque angle specifications or tolerance specifications and the like for processing by means of the microprocessor ( 17 ) from the data store ( 17a ) and / or from one of the receiving device ( 17b ) read out removable data storage can read.
  5. Screw spindle according to one of the preceding claims 2 to 4, wherein the components by means of a data bus ( 27 ) are interconnected to realize a cross-communication.
  6. Screw spindle according to one of the preceding claims, wherein a radio module ( 24 ), by means of which an at least temporarily active wireless communication connection ( 29 ) to a higher-level screw process control ( 28 . 31 ) is realized.
  7. Screw spindle according to claim 6, wherein a radio network field strength detector ( 25 ) and a mode switching means ( 26 ) and wherein the screw spindle is constructed in such a way that, taking into account the means of the radio network field strength detector ( 25 ), a fully automatic switching possibility is realized from a first operating mode to a second operating mode, wherein the first operating mode controls the screwing process by means of the higher-level screw-type control ( 28 ) and wherein the second mode of operation, the control of the screwing process by means of the integrated and self-sufficient Schraubprozesssteuermittels ( 16 ) realized.
  8. Method for operating a screw spindle with housing ( 10 ), comprising an output ( 11 ), a torque transducer ( 12 ), a transmission ( 13 ), a motor ( 14 ) and a rotor position sensor ( 15 ), the output ( 11 ) by means of the engine ( 14 ) and using the transmission ( 13 ) is drivable, wherein of the housing ( 10 ) of the screw spindle an integrated Schraubprozesssteuermittel ( 16 ) is carried out for carrying out a completely self-contained screwing process, wherein the screw spindle is at least temporarily independent and independent of a parent screw process control ( 28 ) is operated.
  9. Method according to claim 8, wherein the screw spindle is a radio module ( 24 ) by means of which the integrated screwdriving process control means ( 16 ) with a parent screw process control ( 28 ) or another higher-level institution ( 31 ) in such a way that at least one screw process control program is received or the screw process result data is sent.
  10. Method according to claim 9, wherein the screw spindle also comprises a radio network field strength detector ( 25 ) and a mode switching means ( 26 ) and wherein, taking into account the radio network coverage, a fully automatic switching from a first mode to a second mode is realized, wherein the first mode, the control of the screwing process by means of a parent Schraubprozesssteuerung and wherein the second mode, the control of the screwing process by means of the integrated Schraubprozesssteuerung and Preferably, in the second mode, data relating to the screwing process or screwing process result data is stored and be transferred fully automatically to the higher-level Schraubprozesssteuerung when switching to the first mode.
DE201010044823 2010-09-09 2010-09-09 Screw spindle, particularly battery operated industrial hand screwdriver for use with radio module, has housing that is provided with drive side, torque receiver, gear, motor and rotor position sensor Pending DE102010044823A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE201010044823 DE102010044823A1 (en) 2010-09-09 2010-09-09 Screw spindle, particularly battery operated industrial hand screwdriver for use with radio module, has housing that is provided with drive side, torque receiver, gear, motor and rotor position sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010044823 DE102010044823A1 (en) 2010-09-09 2010-09-09 Screw spindle, particularly battery operated industrial hand screwdriver for use with radio module, has housing that is provided with drive side, torque receiver, gear, motor and rotor position sensor

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DE102010044823A1 true DE102010044823A1 (en) 2012-03-15

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DE201010044823 Pending DE102010044823A1 (en) 2010-09-09 2010-09-09 Screw spindle, particularly battery operated industrial hand screwdriver for use with radio module, has housing that is provided with drive side, torque receiver, gear, motor and rotor position sensor

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103481230A (en) * 2012-06-13 2014-01-01 罗伯特·博世有限公司 Tool and operation method thereof
DE102013221790A1 (en) * 2013-10-28 2015-05-21 Robert Bosch Gmbh Rivet attachment for a screwing tool and screwing tool
DE102015115469A1 (en) * 2015-09-14 2017-03-16 Frank Hohmann Tool system with power wrench and external control panel
DE102015221033A1 (en) 2015-10-28 2017-05-04 Robert Bosch Gmbh Method for parameterizing an assembly tool, assembly tool and readable code
DE102016207883A1 (en) 2016-05-09 2017-11-09 Robert Bosch Gmbh Coded tool and coded tool sleeve for programming an assembly tool

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008088266A1 (en) 2007-01-15 2008-07-24 Atlas Copco Tools Ab Portable power tool with wireless communication with a stationary control unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008088266A1 (en) 2007-01-15 2008-07-24 Atlas Copco Tools Ab Portable power tool with wireless communication with a stationary control unit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103481230A (en) * 2012-06-13 2014-01-01 罗伯特·博世有限公司 Tool and operation method thereof
DE102013221790A1 (en) * 2013-10-28 2015-05-21 Robert Bosch Gmbh Rivet attachment for a screwing tool and screwing tool
DE102015115469A1 (en) * 2015-09-14 2017-03-16 Frank Hohmann Tool system with power wrench and external control panel
DE102015221033A1 (en) 2015-10-28 2017-05-04 Robert Bosch Gmbh Method for parameterizing an assembly tool, assembly tool and readable code
EP3165334A1 (en) 2015-10-28 2017-05-10 Robert Bosch Gmbh Method for parameterization of an installation tool, installation tool and readable code
DE102016207883A1 (en) 2016-05-09 2017-11-09 Robert Bosch Gmbh Coded tool and coded tool sleeve for programming an assembly tool

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