EP2147755B1 - Bohrmaschine, insbesondere Kernlochbohrmaschine, sowie Verfahren zum Steuern einer solchen - Google Patents

Bohrmaschine, insbesondere Kernlochbohrmaschine, sowie Verfahren zum Steuern einer solchen Download PDF

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Publication number
EP2147755B1
EP2147755B1 EP09009078A EP09009078A EP2147755B1 EP 2147755 B1 EP2147755 B1 EP 2147755B1 EP 09009078 A EP09009078 A EP 09009078A EP 09009078 A EP09009078 A EP 09009078A EP 2147755 B1 EP2147755 B1 EP 2147755B1
Authority
EP
European Patent Office
Prior art keywords
electric motor
electromagnet
drilling machine
switching
switched
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.)
Active
Application number
EP09009078A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2147755A2 (de
EP2147755A3 (de
Inventor
Martin Beichter
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.)
C&E Fein GmbH and Co
Original Assignee
C&E Fein GmbH and Co
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 C&E Fein GmbH and Co filed Critical C&E Fein GmbH and Co
Priority to PL09009078T priority Critical patent/PL2147755T3/pl
Publication of EP2147755A2 publication Critical patent/EP2147755A2/de
Publication of EP2147755A3 publication Critical patent/EP2147755A3/de
Application granted granted Critical
Publication of EP2147755B1 publication Critical patent/EP2147755B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/0021—Stands, supports or guiding devices for positioning portable tools or for securing them to the work
    • B25H1/0057—Devices for securing hand tools to the work
    • B25H1/0064—Stands attached to the workpiece
    • B25H1/0071—Stands attached to the workpiece by magnetic means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/16—Cutting by use of rotating axially moving tool with control means energized in response to activator stimulated by condition sensor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/16—Cutting by use of rotating axially moving tool with control means energized in response to activator stimulated by condition sensor
    • Y10T408/165—Cutting by use of rotating axially moving tool with control means energized in response to activator stimulated by condition sensor to control Tool rotation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/21—Cutting by use of rotating axially moving tool with signal, indicator, illuminator or optical means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/44—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
    • Y10T408/554—Magnetic or suction means

Definitions

  • the invention relates to a drill, in particular a Kemlochbohrmaschine, with an electromagnet for attachment to a metal part, with an electric motor for driving a tool, and with a switching device which comprises at least one switch for switching on and off of an electric motor and the electromagnet, such is formed, that when the electric motor is switched off the electromagnet is only possible if previously made a switch off the electric motor.
  • the invention further relates to a method for controlling such a drilling machine.
  • a drilling machine and a method according to the aforementioned type are known from US 4,278,371 A. known.
  • the disadvantage here is that a safe on state of the electromagnet is not guaranteed in an electric motor in all necessary cases.
  • Such core drilling machines which are attached by means of an electromagnet on the ferromagnetic part, which is usually also the workpiece, are subject to a variety of conditions of use. This is often worked overhead or on Stahlträgem at very high altitude. Very high occupational safety is therefore of great importance for the prevention of accidents.
  • Kemlochbohrmaschine similar kind is from the EP 1 621 286 A2 known.
  • a stand is provided on which an electromagnet is provided for attachment to a ferromagnetic metal part on which a drilling unit is movably received, wherein the drilling unit has a housing in which an electric motor for driving a tool is accommodated, and wherein a switching device, the at least one switch for switching on and off of an electric motor and the electromagnet, is provided.
  • the controls are in this case provided on the side of the stand or of the housing of the drilling unit. Especially when working overhead or in a similar limited The operator has only a very limited overview of the individual functions.
  • the present invention seeks to provide an improved drill, in particular Kemlochbohrmaschine achieved by the increased safety against the known in the art core drilling.
  • a speed sensor is provided which is coupled to the switching device such that a switching off of the electromagnet is only possible if the electric motor has a speed that is less than or equal to one predetermined limit speed is.
  • Threshold speed may be about 150 revolutions / minute, more preferably 100 RPM, further 50 RPM or 10 RPM.
  • the switching device is further designed such that when switching on the drill first the solenoid is turned on and only when a further actuation of the switching device of the electric motor is turned on.
  • the switching device has a common, preferably via a button actuated switch, via which the switching on and off of the electromagnet and the elimination of the electric motor is controlled.
  • At least one further switch is provided for switching on and off of the electric motor, which only allows the electric motor to be switched on when the electromagnet is switched on.
  • To switch off the electric motor can also be used the other switch or provided for the actuation of the electromagnet switch. If this is actuated, the electric motor is first switched off. Preferably, only with a time delay or when the rotational speed of the electric motor falls below a predetermined limit value is then an elimination of the electromagnet.
  • the drilling machine has a stator on which the electromagnet is provided for attachment to a metal part, on which a drilling unit is movably received, wherein the drilling unit has a housing in which the electric motor is received for driving a tool, and wherein the switching device has an operating and control panel, which is accommodated on an end of the housing facing away from the tool.
  • This measure has the advantage that the control panel is constantly observed during the drilling process. Thus, all necessary control and monitoring functions can be better monitored during the work process, resulting in improved safety at work.
  • the drill on a control and control panel which has a plurality of switching elements preferably in the form of buttons, preferably a switching element for switching on the electric motor in reverse, a switching element for switching on the electric motor in the clockwise direction, a switching element for a - And off a cooling lubricant supply, a switching element for switching on an electronic speed reduction, and a switching element for switching off the electric motor.
  • a switching element for switching on the electric motor in reverse preferably a switching element for switching on the electric motor in reverse, a switching element for switching on the electric motor in the clockwise direction, a switching element for a - And off a cooling lubricant supply, a switching element for switching on an electronic speed reduction, and a switching element for switching off the electric motor.
  • At least one of the switching elements are formed as part of a dust-proof membrane keyboard or a silicone switching mat.
  • a magnetic force sensor for monitoring the magnetic holding force is provided, which is coupled to an optical and / or acoustic display.
  • the magnetic force sensor may also be coupled to the switching device, in order then, when a predetermined limit value is exceeded, to avoid starting of the electric motor.
  • Fig. 1 is a drill according to the invention, which is designed as Kernlochbohrmaschine, generally designated by the numeral 10.
  • the drilling machine 10 has a stand 12, which can be fastened by means of an electromagnet 14 on a ferromagnetic metal part 28.
  • a guide 30 is provided, on which a drilling unit 16 is movably received by means of a carriage 32.
  • the drilling unit 16 has a housing 18, in which an electric motor 20 is accommodated, which is designed to drive a drill spindle 22. At the outer end of the drill spindle 22, a drilling tool 26 by means of a receptacle 24 is releasable attached.
  • a controller 19 is further provided, which is preferably designed as a microprocessor control.
  • the controller 19 comprises a switching device to which a magnetic switch 34 received on the side of the stator 12 belongs, which is designed to switch on and off the electromagnet 14 and the electric motor 20, as will be explained below.
  • the switching device further comprises an operating and control panel 38, which is received on the tool 26 opposite end 36 of the housing 18 and its structure Fig. 2 can be seen in more detail.
  • a feed unit 33 is provided, which can either be operated automatically or by manual operation on one of the levers.
  • the control and control panel 38 has a total of five switching elements in the form of buttons 40, 42, 44, 46, 48, which are designed as large-area touch panels in a membrane keypad 50 or a silicone keypad.
  • the switching element 40 is designed to switch on the electric motor 20 in reverse.
  • the switching element 42 is designed to switch on the electric motor 20 in the clockwise direction.
  • the switching element 44 is designed for switching on and off the cooling lubricant supply.
  • the switching element 46 is designed to activate an electronic speed reduction.
  • the remote from the other four switching elements switching element 48 is designed to turn off the electric motor 20.
  • a speed sensor 21 is further provided, which is designed to monitor the engine speed, for example, to allow a shutdown of the solenoid only when the speed is, for example, less than 10 U / min or about equal to zero.
  • a sensor 37 for detecting the magnetic holding force which is coupled to a display 52 (e.g., LED) for the magnetic holding force on the switching element 42. If the magnetic holding force falls below a certain threshold value (which depends on the drilling diameter), in addition the switch 34 and / or the switching elements 40, 42 can flash.
  • the magnetic switch 34 which is provided on the side of the stator 12, is now coupled to the controller 19 or the switching device in such a way that the electric motor 20 first has to be switched off to switch off the electromagnet 14.
  • an actuation of the key of the magnetic switch 34 causes the electric motor 20 to be switched off.
  • the electromagnet 14 can then be switched off automatically with a sufficient time delay or only when the speed detected by the rotational speed sensor 21 falls below a certain threshold value of e.g. 10 rpm has dropped or is zero.
  • the further functions of the core drilling machine can be controlled via the operating and control panel 38 which is provided on the outer end 36 of the housing 18 on the side facing away from the tool 26.
  • a switching element of the control and control panel 38 must be actuated with activated electromagnet 14.
  • the coolant supply can be switched on or off.
  • the switching element 46 an electronic speed reduction can be activated.
  • the switching element 48 serves to switch off the electric motor 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP09009078A 2008-07-23 2009-07-11 Bohrmaschine, insbesondere Kernlochbohrmaschine, sowie Verfahren zum Steuern einer solchen Active EP2147755B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09009078T PL2147755T3 (pl) 2008-07-23 2009-07-11 Wiertarka, zwłaszcza wiertarka do wiercenia otworów pod gwint, oraz sposób sterowania taką wiertarką

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008035308A DE102008035308A1 (de) 2008-07-23 2008-07-23 Bohrmaschine, insbesondere Kernlochbohrmaschine, sowie Verfahren zum Steuern einer solchen

Publications (3)

Publication Number Publication Date
EP2147755A2 EP2147755A2 (de) 2010-01-27
EP2147755A3 EP2147755A3 (de) 2011-01-05
EP2147755B1 true EP2147755B1 (de) 2012-05-02

Family

ID=41228410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09009078A Active EP2147755B1 (de) 2008-07-23 2009-07-11 Bohrmaschine, insbesondere Kernlochbohrmaschine, sowie Verfahren zum Steuern einer solchen

Country Status (6)

Country Link
US (1) US8568066B2 (zh)
EP (1) EP2147755B1 (zh)
CN (1) CN101633057B (zh)
AT (1) ATE555881T1 (zh)
DE (1) DE102008035308A1 (zh)
PL (1) PL2147755T3 (zh)

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US8376667B2 (en) * 2007-07-27 2013-02-19 Milwaukee Electric Tool Corporation AC/DC magnetic drill press
CN101890520B (zh) * 2010-07-01 2012-04-18 尼尔斯·雅各·伍德斯 无绳磁座钻
DE102010040336A1 (de) * 2010-09-07 2012-03-08 Alfred Kärcher Gmbh & Co. Kg Vorrichtung und Verfahren zum Erfassen einer Betriebszustandsänderung eines Elektrowerkzeuges sowie Staubsauger
US20130287508A1 (en) 2012-04-25 2013-10-31 Milwaukee Electric Tool Corporation Magnetic drill press
DE102013000266A1 (de) 2013-01-10 2014-07-10 Alfred Raith GmbH Sägen- und Werkzeugfabrikation Schalt- und Steuereinrichtung für ein Elektrowerkzeug und Verfahren zu dessen Steuerung
WO2014169297A1 (en) * 2013-03-15 2014-10-16 Milwaukee Electric Tool Corporation Magnetic drill press
US9561568B2 (en) 2014-04-25 2017-02-07 Black & Decker Inc. Magnetic drill press with alternate power source
CN106474828A (zh) * 2015-08-27 2017-03-08 通用电气公司 用于重力分离的装置和方法及包含其的石油和天然气生产系统和方法
US10486281B2 (en) 2015-12-14 2019-11-26 Milwaukee Electric Tool Corporation Overload detection in a power tool
WO2017136318A1 (en) 2016-02-01 2017-08-10 Milwaukee Electric Tool Corporation Holding force detection for magnetic drill press
CN105598729A (zh) * 2016-02-02 2016-05-25 宁波市国冠自动化技术有限公司 一种电动螺丝刀钻孔定位装置
CN107378059A (zh) * 2017-08-09 2017-11-24 安徽机电职业技术学院 一种省力的手持式钢板钻孔机械
CN107838457A (zh) * 2017-12-14 2018-03-27 李奇宏 一种具有保护功能的钻孔装置
JP7437879B2 (ja) * 2019-04-18 2024-02-26 日東工器株式会社 可搬型工作機
DE202019102790U1 (de) * 2019-05-16 2020-08-18 C. & E. Fein Gmbh Magnetfuß
DE202019103844U1 (de) * 2019-07-12 2020-10-15 C. & E. Fein Gmbh Magnetfuß und Elektrowerkzeugmaschine
USD970562S1 (en) * 2021-01-22 2022-11-22 Scheppach Gmbh Bench drilling machine

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Also Published As

Publication number Publication date
ATE555881T1 (de) 2012-05-15
PL2147755T3 (pl) 2012-09-28
US20100021249A1 (en) 2010-01-28
US8568066B2 (en) 2013-10-29
CN101633057B (zh) 2014-08-20
EP2147755A2 (de) 2010-01-27
DE102008035308A1 (de) 2010-01-28
EP2147755A3 (de) 2011-01-05
CN101633057A (zh) 2010-01-27

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