WO2010072438A1 - Système de sécurité contre des contacts dangereux sur des machines - Google Patents

Système de sécurité contre des contacts dangereux sur des machines Download PDF

Info

Publication number
WO2010072438A1
WO2010072438A1 PCT/EP2009/063847 EP2009063847W WO2010072438A1 WO 2010072438 A1 WO2010072438 A1 WO 2010072438A1 EP 2009063847 W EP2009063847 W EP 2009063847W WO 2010072438 A1 WO2010072438 A1 WO 2010072438A1
Authority
WO
WIPO (PCT)
Prior art keywords
access area
machine
protection system
tool
objects
Prior art date
Application number
PCT/EP2009/063847
Other languages
German (de)
English (en)
Inventor
Thilo Koeder
Joachim Platzer
Ulli Hoffmann
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 WO2010072438A1 publication Critical patent/WO2010072438A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
    • F16P3/14—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
    • F16P3/144—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using light grids

Definitions

  • the invention relates to an intervention protection system for machines, in particular stationary or hand-guided, electrically operated machine tools, according to the preamble of claim 1.
  • Shielding often represents the utmost possible. All the more so as such shields in practice often bring restrictions, be it in handling or by reducing the accessibility of the respective workpiece. Since not infrequently, so for example in hand-held circular and jigsaws, the saw construction as such already the field of view of the respective tool, in these cases, a saw blade anyway limits the immediate view of the saw blade but the pursuit of predetermined working lines are often on the part of respective machine, in particular whose guide foot marks provided to facilitate the alignment of the tool to the respective working line.
  • auxiliary devices are used in which sensor and / or camera systems in conjunction with corresponding display devices to facilitate the alignment of the tool to the respective working line.
  • auxiliary systems are also already known in development stages, for example, by DE 10 2006 052 808 A1, which allow at least semi-autonomous operation for a jigsaw in which the user essentially only supports the machine in the working direction, the system but the orientation on the working line to be followed.
  • the invention has for its object to provide an intervention protection function for machines, in particular stationary or hand-held, electrically operated machine tools, optionally in addition to previous systems, in a manner that with high security for the user - as well as third parties
  • an optical shielding of the access area to the respective tool is used, that is to say no physical barrier to be arranged on the workpiece or machine side which impedes access to the tool would.
  • the shielding forms virtually, for example in the form of a visible or even invisible light mantle, which delimits an area around the tool and overlaps markings within the delimited area such that, in particular following the light mantle, the markings in FIG Detection area of at least one sensor or a camera and so a comparison with a corresponding background image is possible.
  • the corresponding visual capture can be done both digitally and analogously, and in a corresponding manner also the image matching, each computer-aided. If the shield is broken through and thus a mark covered to the extent that this is recognized as an image error to the stored background image, protective measures are triggered, which may for example consist in that the machine is switched off and / or the tool is directly blocked by an associated braking device.
  • markings machine parts can be provided as such, or parts or cut-outs of such machine parts, so, for example, refer back to jigsaws, corners or edges of the foot plate or the boundary of the free-cut, penetrated by the tool area of the base plate.
  • existing markings can also be used, for example a mark provided on the foot plate for aligning the jigsaw with a respective working line.
  • markings can also be formed by special forms of the foot plate or color coding of the foot plate.
  • the markers can also be projected as optical markers, such as a line or dot grid with illuminated lines or dots. If such a solution intervenes in the monitored, in particular shielded, access area, then at least a part of the points or lines is covered, which is recognized in the corresponding image comparison, in particular in the case of generally irregular or very irregular surface structures, and used to trigger the protective measures can be.
  • FIG. 2 shows the front region of a similarly designed jigsaw in a perspective plan view of its region of its saw blade.
  • FIG Foot plate having an access area delimited by an optical shield and markers located in the access area, and
  • Fig. 3 is a representation corresponding to FIG. 2 in protruding into the access area finger as endangered and one of the markings covering object.
  • Fig. 1 illustrates a hand-held, electrically driven machine tool 1 in the form of a jigsaw 2.
  • Their housing 3 is slidably supported on a workpiece 5 via a base plate 4.
  • front area of the jigsaw 2 whose formed by a saw blade 8 tool 7 is arranged. This engages in the work operation in the workpiece 5.
  • a rotation of the saw blade 8 according to the arrow 11 is provided about a rotation axis 12 parallel to the stroke axis
  • the different operating modes can be set by means of a switching device 13 which also how a switching arrangement 14 is provided for switching on and off the jigsaw on the housing 3.
  • the saw blade 8 passes through the base plate 3 which supports the housing 5 against the workpiece 5 in the region of a recess 15 which extends from the edge 16 of FIG
  • Foot plate 4 partially enclosed bottom portion 17 is provided and also with regard to the various operating modes sufficient clearance between the saw blade 8 and 4 foot plate guaranteed.
  • Parts of the foot plate 4 are designed as markings 18, 19 or carry corresponding markings or are used as such markings, since they already in a contrasting to the environment design, be it by structuring their surface or otherwise present.
  • the markings 18, illustrated by crosshairs lie on both sides of the part of the recess 15 which runs out at the front against the edge 16.
  • the marking 19 is through a front-side section of the edge
  • the positioning of the markers 18, 19 serves merely to illustrate the various possibilities of using parts of the jigsaw 1, in particular of its foot plate 4, as a carrier for markings or as markings.
  • FIG. 2 and 3 further illustrate that the housing 3, as shown in particular in FIG. 1, ends across the tool receptacle 9 in a front part 20 which terminates downwardly in a nose-shaped projection 21 overlapping the foot plate 4.
  • the projection 21 is provided in the transition to its lower boundary with a lighting assembly 22 and preferably also with a sensor assembly 23 which is formed for example by a camera and which just like the lighting assembly 22 is merely symbolized by the illustrated opening in the bottom of the projection 21 ,
  • the illumination arrangement 22 may once include a light source for illuminating the working field and thus serve to improve the visibility for the user in the working area of the saw blade 8.
  • the lighting arrangement may also further, operating with visible or invisible light, serve the virtual shielding and illumination of an area which may be considered as
  • Access area on the saw blade 8 is to be shielded to interrupt the penetration of hazardous or endangered objects in the workspace of the saw blade 8 the sawing operation and / or possibly already beforehand trigger a warning signal that could be visualized for example in a display panel 24. In a similar way, an acoustic warning would be possible.
  • FIG. 3 illustrates an object penetrating into the shielded area as a finger 25. If this finger 25 moves into the overlap area to a mark 18, this mark is no longer recognizable to the sensor system 23, and there is thus a deviation from the initial state ben, as illustrated in Fig. 2. If the initial state, which is preferably stored as a background image, and the operating state deviating therefrom according to FIG. 3 are compared, the result is a deviation which can be used as a signal for a danger message and / or for switching off the machine. The corresponding processing of the detected via the sensor 23
  • Conditions take place in-machine via a computing and control unit, as indicated at 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

L'invention concerne un système de sécurité contre des contacts dangereux sur des machines, notamment des machines-outils, ce système comportant un dispositif de sécurité qui détecte des objets entrant en contact avec l'outil dans une zone d'accès et ne faisant pas partie de la machine comme étant des objets (27) dangereux ou en danger, des mesures de protection étant alors prises, notamment l'arrêt de la machine (1), lorsque de tels objets (27) pénètrent dans ladite zone d'accès.
PCT/EP2009/063847 2008-12-22 2009-10-22 Système de sécurité contre des contacts dangereux sur des machines WO2010072438A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008055062A DE102008055062A1 (de) 2008-12-22 2008-12-22 Eingriffs-Schutzsystem für Maschinen
DE102008055062.0 2008-12-22

Publications (1)

Publication Number Publication Date
WO2010072438A1 true WO2010072438A1 (fr) 2010-07-01

Family

ID=41508959

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/063847 WO2010072438A1 (fr) 2008-12-22 2009-10-22 Système de sécurité contre des contacts dangereux sur des machines

Country Status (2)

Country Link
DE (1) DE102008055062A1 (fr)
WO (1) WO2010072438A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2759481C1 (ru) * 2020-12-10 2021-11-15 Федеральное государственное бюджетное образовательное учреждение высшего образования «Сибирский государственный автомобильно-дорожный университет (СибАДИ)» Способ защиты конечностей работника от повреждения движущимися частями механизма

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010052001B4 (de) 2010-11-19 2019-09-26 Bayerische Motoren Werke Aktiengesellschaft 9-Gang-Planetenradautomatikgetriebe
EP3676055B1 (fr) * 2017-08-30 2022-07-20 Milwaukee Electric Tool Corporation Outil électrique ayant une détection d'objet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060096425A1 (en) * 2003-04-29 2006-05-11 Keller David V System and method for rapidly stopping a spinning table saw blade
US20070085502A1 (en) * 2005-10-13 2007-04-19 Cargill, Incorporated Braking system and method
DE102007041098A1 (de) * 2006-09-04 2008-03-06 Robert Bosch Gmbh Werkzeugmaschinenüberwachungsvorrichtung
DE102006048560A1 (de) * 2006-10-13 2008-04-17 Robert Bosch Gmbh Schutzvorrichtung
DE102006052808A1 (de) * 2006-11-09 2008-05-15 Robert Bosch Gmbh Handhubsägemaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060096425A1 (en) * 2003-04-29 2006-05-11 Keller David V System and method for rapidly stopping a spinning table saw blade
US20070085502A1 (en) * 2005-10-13 2007-04-19 Cargill, Incorporated Braking system and method
DE102007041098A1 (de) * 2006-09-04 2008-03-06 Robert Bosch Gmbh Werkzeugmaschinenüberwachungsvorrichtung
DE102006048560A1 (de) * 2006-10-13 2008-04-17 Robert Bosch Gmbh Schutzvorrichtung
DE102006052808A1 (de) * 2006-11-09 2008-05-15 Robert Bosch Gmbh Handhubsägemaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2759481C1 (ru) * 2020-12-10 2021-11-15 Федеральное государственное бюджетное образовательное учреждение высшего образования «Сибирский государственный автомобильно-дорожный университет (СибАДИ)» Способ защиты конечностей работника от повреждения движущимися частями механизма

Also Published As

Publication number Publication date
DE102008055062A1 (de) 2010-06-24

Similar Documents

Publication Publication Date Title
EP3393709B1 (fr) Dispositif d'usinage
DE10240227B4 (de) Verfahren und Vorrichtung zum Betrieb einer Anzeigeeinrichtung an einer Arbeitsmaschine
DE10000287A1 (de) Vorrichtung und Verfahren zur Überwachung eines Erfassungsbereichs an einem Arbeitsmittel
EP1662349B1 (fr) Protection de machines dépendant des conditions des machines
EP2644454B1 (fr) Poste de commande extérieur pour un engin
DE102009054709A1 (de) Werkzeugmaschine, insbesondere handgehaltene Werkzeugmaschine
DE102015121574B4 (de) Werkzeugmaschine mit schutzabdeckungsdetektor
DE19609771A1 (de) Aktives Sicherheitssystem an Tischkreisägen o.ä.
DE102008025191A1 (de) Fotoelektrischer Sensor
EP2288465A1 (fr) Machine-outil, en particulier machine-outil portative
DE102008055057A1 (de) Werkzeugmaschine, insbesondere handgehaltene Werkzeugmaschine
DE102008001753A1 (de) Werkzeugmaschine, insbesondere handgehaltene Werkzeugmaschine
WO2010072438A1 (fr) Système de sécurité contre des contacts dangereux sur des machines
DE102009044916A1 (de) Werkzeugmaschine, insbesondere handgehaltene Werkzeugmaschine
EP2288462B1 (fr) Machine-outil, en particulier machine-outil portative
DE202012010829U1 (de) Sägewerkzeugvorrichtung
EP2227348B1 (fr) Unité de surveillance pour une zone à surveiller dans une machine-outil
DE102008055061A1 (de) Führungssystem für Werkzeugmaschinen
DE102008055066A1 (de) Werkzeugmaschine, insbesondere handgehaltene Werkzeugmaschine
EP2512714B1 (fr) Système de machine-outil notamment destiné à des machines-outils à main
DE102008040379A1 (de) Einrichtung zum Kalibrieren von Werkzeugmaschinen
DE102008055059A1 (de) Werkzeugmaschine, insbesondere Handwerkzeugmaschine
EP2483026B1 (fr) Scie sauteuse fonctionnant de façon semi-autonome
DE102011083435B4 (de) Werkzeugmaschine
DE212015000229U1 (de) Bedienerschutzsystem für Elektrosäge

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09740127

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 09740127

Country of ref document: EP

Kind code of ref document: A1