EP0991495A1 - Device for cleaning the working area of chip removal machines - Google Patents

Device for cleaning the working area of chip removal machines

Info

Publication number
EP0991495A1
EP0991495A1 EP99932428A EP99932428A EP0991495A1 EP 0991495 A1 EP0991495 A1 EP 0991495A1 EP 99932428 A EP99932428 A EP 99932428A EP 99932428 A EP99932428 A EP 99932428A EP 0991495 A1 EP0991495 A1 EP 0991495A1
Authority
EP
European Patent Office
Prior art keywords
propeller blades
propeller
rotation
axis
cleaning
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.)
Withdrawn
Application number
EP99932428A
Other languages
German (de)
French (fr)
Inventor
Günter Lang
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.)
Individual
Original Assignee
Individual
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 DE29801719U external-priority patent/DE29801719U1/en
Application filed by Individual filed Critical Individual
Publication of EP0991495A1 publication Critical patent/EP0991495A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B23Q11/1084—Arrangements for cooling or lubricating tools or work specially adapted for being fitted to different kinds of machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/005—Devices for removing chips by blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/0075—Devices for removing chips for removing chips or coolant from the workpiece after machining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/05—Cutting fluid application and debris control
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/083—Fan coaxial with cutter
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/094—Debris remover, catcher, or deflector
    • 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
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/303976—Milling with means to control temperature or lubricate
    • Y10T409/304032—Cutter or work
    • 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
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/304088—Milling with means to remove chip
    • 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
    • Y10T483/00—Tool changing
    • Y10T483/17—Tool changing including machine tool or component
    • Y10T483/1733—Rotary spindle machine tool [e.g., milling machine, boring, machine, grinding machine, etc.]
    • Y10T483/1736—Tool having specific mounting or work treating feature

Definitions

  • the invention relates to a device for cleaning the work area on metal cutting machines, in particular chips, cooling lubricants and other contaminants.
  • the solution is particularly suitable for machine tools with a tool changing device or with several work spindles.
  • the device according to the invention is arranged either in the tool magazine or on one of the tool spindles, which device can then be used, if necessary, to blow off the work area.
  • the device is provided with a connecting means with which it can be arranged on a work spindle and can be gripped, for example, by a tool chuck.
  • the device can also be provided with means that interact with a tool changer. This can be, for example, a ring flange, a disk flange or the like.
  • the machining program can be designed in such a way that the device is changed as the last tool within a machining cycle.
  • the cleaning process can thus be included in the programmable, automatic processing cycle, so that the operating personnel at the end of the loading
  • the device is initially positioned at an optimum distance above the elements to be cleaned and, if necessary, is moved laterally by means of existing programmable axis movement movements of the machine after the start of the rotation movement.
  • the device according to the invention forms a cleaning tool and relieves the strain on the operating personnel to the extent that manual or essentially no manual removal of the chips is no longer required.
  • cleaning can be carried out faster than before, so that machine time can be saved.
  • the cleaning effect is uniform and easily reproducible due to the programmable cleaning path and the programmable rotational speed of the device. Rejects due to inadequate cleaning of the work area can thus be avoided.
  • the cleaning tool (the device) has pivotably mounted propeller blades which are folded into a position in the rest position in which the device takes up little space.
  • the propeller unfolds by essentially pivoting the propeller blades into the radial position.
  • the propeller blades are hinged to the basic bracket.
  • the hinge means define pivot axes which are aligned, for example, transversely to the axis of rotation of the basic holder.
  • the propeller blades oriented approximately axially in the rest position then open as a result of the centrifugal force as soon as the tool spindle is rotated with the cleaning tool.
  • the propeller blades are connected to a spring means that constantly biases towards the rest position. In this they are aligned essentially axially.
  • the strength of the spring means is like this
  • the propeller blades are held in the axial position or essentially in the axial position even if the position of the axis of rotation deviates from the horizontal.
  • the device can be held horizontally without the prop wing swinging out of its rest position or folding.
  • the spring means can also be omitted, so that the propeller blades in the rest position only hang down due to gravity.
  • the small space requirement of the device which is achieved by folding the propeller blades in the rest position, allows the arrangement on a work spindle in the work area of the machine tool even during other machining operations; become. If the device is kept in stock in a tool magazine, it takes up relatively little space there and can therefore be compared with another tool, such as a drill or milling cutter.
  • the cleaning tool can also be used when used on other machines, e.g. for blowing off dust.
  • the cleaning tool according to the invention can, if necessary, be formed from several plastic parts.
  • the propeller blades are pivoted on pivots, for example, and tension springs (coil springs) can serve as spring means.
  • tension springs coil springs
  • the propeller blades pointing away from the fastening end of the basic holder in the rest position work as a pressure propeller, i.e. generate an air jet directed away from the base body.
  • the reaction force on the individual propeller blades supports the centrifugal force when opening the propeller. That’s why
  • a film hinge can also be used for the pivotable mounting of each propeller blade, which is formed by a strip-shaped, deformable plastic material region.
  • Leaf springs or the like can also be used.
  • the spring means can also be omitted if necessary.
  • the pivot axes of the hinges can be inclined against the axis of rotation of the basic holder. This makes it possible to bring about the opening of the propeller by abruptly accelerating the tool spindle, the propeller blades then being kept open by the reaction force generated by moving the air and the centrifugal force. If the work spindle is stopped abruptly, the swing of the propeller blades then causes the propeller to collapse by pivoting the blades back into the axial position.
  • a friction damper or a locking means can be provided on the hinge or separately, which then holds the propeller blades in this preferred position (rest position).
  • FIG. 1 shows the cleaning device according to the invention in the idle state with the propeller blades folded in;
  • Fig. 2 shows the cleaning device of FIG. 1 in a plan view and
  • Fig. 3 shows the cleaning device according to FIGS. 1 and 2 in a side view in the working position.
  • a cleaning tool 1 is illustrated, which can be attached to a not shown, rotatable about an axis of rotation 2 work spindle.
  • the cleaning tool 1 has a basic holder 3 which is provided with a tapered or cylindrical shank 4 which is set up for connection to the tool or machine spindle.
  • a disk-shaped section 5 which can be set up, for example, for receiving in a tool changer.
  • the base holder 3 which is made in one piece from plastic or metal, is provided with receptacles 6 which project axially away from the disk-shaped section 5.
  • a metal insert 7 having a central bore 8 can be arranged in its cylindrical shank 4 for reinforcement. This can be used to supply compressed air or liquid media, for example to carry out additional concentrated cleaning.
  • the receptacles 6 define between them spaces or recesses 11 with plane flanks 12, 13 which oppose each other at a distance and arranged in parallel on the other zuein ⁇ : are.
  • the recesses 11 serve to receive corresponding ends 14 of propeller blades 15.
  • Each end 14 is each provided with a bore through which a bolt passes.
  • the bolt extends between two receptacles 6 through the recess 11.
  • a head 16 of such a bolt is visible on the left in FIG. 1.
  • the bolt and the end 14 of the propeller blade 15 are dimensioned such that the propeller blade 15 sits on the bolt with little play and is therefore easily pivotable. In addition, there is relatively little play between the end 14 and the two flat surfaces 12, 13, so that the propeller blade 15 is guided in the recess 11.
  • the cleaning tool illustrated in FIG. 1 has a total of four propeller blades 15, each of which is pivotably supported by bolts about pivot axes extending transversely to the axis of rotation 2.
  • the swivel axes each form an angle of 90 ° with each other. They are arranged so that the acceleration and deceleration of the rotary movement about the axis of rotation 2 has no influence on the pivoting movement of the propeller blades 15 hac. However, under the action of centrifugal force and aerodynamic forces, they can be pivoted from their axial position illustrated in FIG. 1, which is the rest position, into a radial position illustrated in FIG. 3, which represents the working position.
  • spring means 17, 17 ' are arranged between the base body or base holder 3 and each propeller blade 15, as can be seen in particular in FIG. 3.
  • a tension spring 17 is used as the spring means.
  • One end of the tension spring is hooked into an eyelet 18, which is formed in one piece near the end 14 of the propeller blade 15. With its other end, the tension spring 17 engages in a transverse bore 19 which is arranged on a central axial extension 21 of the basic holder 3.
  • a rubber band or an O-ring 17 'can also serve as a return device, as shown on the left in FIG. 3.
  • the central axial extension 21 can be designed as a nozzle for cleaning agents. For this purpose, it has the through bore 8 shown in FIG. 2. If necessary, the opening of the through bore 8 in the area of the axial extension 21 can have a nozzle contour (Venturi nozzle, flat jet nozzle or other nozzle shape to increase the cleaning effect with little use of fluid).
  • the cleaning tool 1 described so far works as follows:
  • the cleaning tool 12 is not rotated about the axis of rotation 2 turned.
  • the return device which is formed by the springs 17, therefore holds the propeller blades 15 in the position illustrated in FIG. 1 irrespective of the installation position of the work spindle of the machine tool, that is to say both in the case of hanging and lying installation thereof.
  • the cleaning tool 1 is accelerated about the axis of rotation 2.
  • the centrifugal force acting on the propeller blades 15 now causes the propeller to unfold, in that the propeller blades 15 are pivoted outward about their pivot axes.
  • the device is designed for clockwise rotation and the profile of the propeller blades 15 is designed such that, after initiating an increasing rotational movement about the axis of rotation 2, they initially move out of the rest position (FIG. 1) by the action of the centrifugal force in the direction of the working position (FIG. 3) move. Due to the further increasing speed and the influence of air resistance, i.e.
  • the section 5 thus forms a stop ring which absorbs the considerable reaction forces acting on the propeller blades 15.
  • the pressure force of the air jet presses the propeller blades 15 so firmly against the stop ring 5 that the rotating propeller is practically rigid. It can therefore also be swiveled without gyro forces leading to the deflection of individual propeller blades from their radial position. A swiveling movement of the propeller can serve to enlarge the cleaning area.
  • an air flow is generated, in particular in the axial direction away from the work spindle of the machine tool.
  • the air jet blows off the chips and other dirt present in the work area.
  • the cleaning effect can be influenced by the speed of the cleaning tool.
  • the cleaned area can be enlarged by specifically adjusting the work spindle to the side.
  • the rotary movement of the cleaning tool 1 is stopped.
  • both the centrifugal force which keeps the propeller blades 15 spread and the reaction force of the air jet which bears on the propeller blades 15 are eliminated.
  • the return device now folds the propeller blades into their position according to FIG. 1 in the rest position.
  • the springs of the return device are dimensioned so that the spring force is surely overcome by the centrifugal force as the speed increases and from a certain speed that is not too high.
  • the spring force is so great that the propeller blades 15 are pivoted back into their rest position when the cleaning tool 1 is not rotating.
  • it is so large that the rest position is maintained even when the device is used horizontally, for example in tool changing magazines.
  • the propeller blades are pivotally mounted about pivot axes which are inclined with respect to the axis of rotation 2.
  • the pivot axis can have an inclined position which essentially corresponds to the pitch of the propeller blade 15.
  • the propeller blades 15 are thereby unfolded, while they are folded together when braking.
  • not too strong locking means can be provided, which act between the base bracket 3 and the propeller blades 15. It is also possible to provide a frictional connection here, for example by interposed O-rings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Cleaning In General (AREA)

Abstract

According to the invention, a propeller with rotating blades is provided as cleaning tool (1) for the working area of chip removal machines. The angle of attack of said blades is regulated in such a way that an air jet supporting the unfolding of the propeller blades (15) is generated. The propeller blade (15) is arranged in a cartridge for exchanging tools replacing a common tool or a tool spindle and serves to automatically air blast the working area for cleaning purposes.

Description

Einrichtung zur Reinigung- des Arbeitsbereichs an ZerspanungsmaschinenEquipment for cleaning the work area on cutting machines
Die Erfindung betrifft eine Einrichtung zur Reinigung des Arbeitsbereichs an Zerspanungsmaschinen, insbesondere von Spänen, Kühlschmierstoffen und sonstigen Verunreinigungen .The invention relates to a device for cleaning the work area on metal cutting machines, in particular chips, cooling lubricants and other contaminants.
Obwohl bei Werkzeugmaschinen, die spanende Bearbeitungsoperationen durchführen, auf die Abfuhr von Spänen und Kühl- bzw. Schmierstoffen geachtet wird, lässt es sich meist nicht vermeiden, dass sich auf dem Werkstück, in dessen Umgebung und auf Maschinenteilen, Späne oder andere Verunreinigungen absetzen. Nach Abschluss des Bearbeitungsvorgangs sind die im Arbeitsbereich vorhandenen Maschinenteile, Arbeitstische, die darauf aufgebauten Spannvorrichtungen und Werkstücke mit Spänen, Kühl- schmierstoffen und oder sonstigen Verunreinigungen be-Although the removal of swarf and coolants or lubricants is taken into account in machine tools that carry out machining operations, it is usually unavoidable that chips, chips or other contaminants can settle on the workpiece, in its surroundings and on machine parts. After completion of the machining process, the machine parts, work tables, the clamping devices and workpieces on the work area are covered with chips, cooling lubricants and or other contaminants.
- 1 - deckt. Deshalb wird der Arbeitsbereich entweder nach jedem Werkstück oder von Zeit zu Zeit nach Bearbeitung mehrerer Werkstücke üblicherweise manuell gereinig . Dazu werden die Schutztüren der Kabine geöffnet und der Arbeitsbereich wird abgespritzt. Dies kann allerdings meist nur bei stillstehender Werkzeugmaschine erfolgen, was mit entsprechendem Verlust von verfügbarer Bearbeitungszeit verbunden ist.- 1 - covers. For this reason, the work area is usually cleaned manually after each workpiece or from time to time after machining several workpieces. To do this, the protective doors of the cabin are opened and the working area is hosed down. However, this can usually only be done when the machine tool is at a standstill, which is associated with a corresponding loss of available machining time.
Durch den erforderlichen Personaleinsatz entstehen zusätzliche Personalkosten, und durch den Verlust an Bearbeitungszeit entstehen zusätzliche Maschinenkosten pro Bearbeitungswerkstück .Additional personnel costs are incurred due to the required personnel deployment, and additional machine costs per machining workpiece arise due to the loss of machining time.
Es ist Aufgabe der Erfindung hier abzuhelfen.It is the object of the invention to remedy this.
Diese Aufgabe wird durch eine Einrichtung mit den Merkmalen des Patentanspruchs 1 gelöst. Die Lösung eignet sich insbesondere für Werkzeugmaschinen mit Werkzeugwechselvorrichtung oder mit mehreren Arbeitsspindel . Entweder in dem Werkzeugmagazin oder an einer der Werkzeugspindeln wird die erfindungsgemäße Einrichtung angeordnet, die dann bedarfsweise zum Abblasen des Arbeitsbereichs dienen kann. Dazu ist die Einrichtung mit einem Verbindungsmittel versehen, mit dem sie an einer Arbeitsspindel angeordnet und bspw. von einem Werkzeugspannfutter gefasst werden kann. Bedarfsweise kann die Einrichtung außerdem mit Mitteln versehen sein, die mit einem Werkzeugwechsler zusammenwirken. Dies kann bspw. ein Ringflansch, ein Scheibenflansch oder ähnliches sein.This object is achieved by a device with the features of claim 1. The solution is particularly suitable for machine tools with a tool changing device or with several work spindles. The device according to the invention is arranged either in the tool magazine or on one of the tool spindles, which device can then be used, if necessary, to blow off the work area. For this purpose, the device is provided with a connecting means with which it can be arranged on a work spindle and can be gripped, for example, by a tool chuck. If necessary, the device can also be provided with means that interact with a tool changer. This can be, for example, a ring flange, a disk flange or the like.
Ist die erfindungsgemäße Einrichtung in ein Werkzeugwechselsystem integriere, kann das Bearbeitungsprogramm so gestaltet werden, dass die Einrichtung als letztes Werkzeug innerhalb eines Bearbeitungszyklus eingewechselt wird. Somit kann der Reinigungsvorgang in dem programmierbaren, automatischen Bearbeitungszyklus mit aufgenommen werden, so dass das Bedienungspersonal am Ende des Be-If the device according to the invention is integrated in a tool change system, the machining program can be designed in such a way that the device is changed as the last tool within a machining cycle. The cleaning process can thus be included in the programmable, automatic processing cycle, so that the operating personnel at the end of the loading
- 2 - arbeitungszyklus einen gereinigten Arbeitsbereich vorfindet. Um die Reinigungswirkung zu optimieren, ist es vorteilhaft, wenn die Einrichtung mittels vorhandener programmierbarer Achsverfahrbewegungen der Maschine nach Beginn der Rotationsbewegung zunächst in optimalen Abstand über die zu reinigenden Elemente gebracht und bedarfsweise seitlich verfahren wird.- 2 - working cycle finds a cleaned work area. In order to optimize the cleaning effect, it is advantageous if the device is initially positioned at an optimum distance above the elements to be cleaned and, if necessary, is moved laterally by means of existing programmable axis movement movements of the machine after the start of the rotation movement.
Die erfindungsgemäße Einrichtung bildet ein Reinigungswerkzeug und bewirkt eine Entlastung des Bedienungspersonals insofern, als keine manuelle oder im Wesentlichen keine manuelle Entfernung der Späne mehr erforderlich ist . Außerdem kann das Reinigen schneller als bisher durchgeführt werden, so dass Maschinenzeit einsparbar ist. Außerdem ist die Reinigungswirkung durch den programmierbaren Reinigungsweg und die programmierbare Umdrehungsgeschwindigkeit der Einrichtung gleichmäßig und gut reproduzierbar. Ausschuss infolge ungenügender Reinigung des Arbeitsbereichs kann somit vermieden werden.The device according to the invention forms a cleaning tool and relieves the strain on the operating personnel to the extent that manual or essentially no manual removal of the chips is no longer required. In addition, cleaning can be carried out faster than before, so that machine time can be saved. In addition, the cleaning effect is uniform and easily reproducible due to the programmable cleaning path and the programmable rotational speed of the device. Rejects due to inadequate cleaning of the work area can thus be avoided.
Das Reinigungswerkzeug (die Einrichtung) weist schwenkbar gelagerte Propellerflügel auf, die in Ruhestellung in eine Position geklappt sind, in der die Einrichtung wenig Raum beanspruche. Bei Drehung des Reinigungswerkzeuges entfaltet sich der Propeller, indem die Propellerflügel im Wesentlichen in Radialposition schwenken. Dazu sind die Propellerflügel mit Scharniermitteln an dem Grundhalter gelager . Die Scharniermittel legen Schwenkachsen fest, die bspw. quer zu der Drehachse des Grundhalters ausgerichtet sind. Die in Ruhestellung etwa axial ausgerichtecen Propellerflügel öffnen dann infolge der Fliehkraft, sobald die Werkzeugspindel mit dem Reinigungswerkzeug in Drehung versetzt wird.The cleaning tool (the device) has pivotably mounted propeller blades which are folded into a position in the rest position in which the device takes up little space. When the cleaning tool rotates, the propeller unfolds by essentially pivoting the propeller blades into the radial position. For this purpose, the propeller blades are hinged to the basic bracket. The hinge means define pivot axes which are aligned, for example, transversely to the axis of rotation of the basic holder. The propeller blades oriented approximately axially in the rest position then open as a result of the centrifugal force as soon as the tool spindle is rotated with the cleaning tool.
Vorteilhafterweise sind die Propellerflügel mit einem Federmittel verbunden, das ständig auf die Ruheposition hin vorspannt. In dieser sind sie im Wesentlichen axial ausgerichtet. Die Federmittel sind von ihrer Stärke her soAdvantageously, the propeller blades are connected to a spring means that constantly biases towards the rest position. In this they are aligned essentially axially. The strength of the spring means is like this
- 3 - bemessen, dass die Propellerflügel auch dann in Axialposition oder im Wesentlichen in Axialposition gehalten werden, wenn die Stellung der Drehachse von der Horizontalen abweicht. Bspw. kann die Einrichtung horizontal gehalten werden, ohne dass die Propelierflügel aus ihrer Ruheposition ausschwenken oder -klappen. Bei Anwendungen, bei denen sichergestellt ist, dass die Drehachse immer vertikal ist, können die Federmittel auch entfallen, so dass die Propellerflügel in Ruheposition lediglich infolge der Schwerkraft nach unten hängen.- 3 - dimensioned so that the propeller blades are held in the axial position or essentially in the axial position even if the position of the axis of rotation deviates from the horizontal. E.g. the device can be held horizontally without the prop wing swinging out of its rest position or folding. In applications where it is ensured that the axis of rotation is always vertical, the spring means can also be omitted, so that the propeller blades in the rest position only hang down due to gravity.
Der geringe Platzbedarf der Einrichtung, der durch das Zusammenklappen der Propellerflügel in Ruheposition erreicht wird, gestattet die Anordnung an einer Arbeits- spindel im Arbeitsbereich der Werkzeugmaschine auch während andere Bearbeitungsvorgänge durchgeführt; werden. Ist die Einrichtung in einem Werkzeugmagazin auf Vorrat gehalten, nimmt sie dort relativ wenig Platz weg und ist insofern mit einem sonstigen Werkzeug, wie bspw. einem Bohrer oder Fräser zu vergleichen. Bei Anwendung an anderen Maschinen, bspw. zum Abblasen von Staub ist das Reinigungswerkzeug ebenfalls verwendbar.The small space requirement of the device, which is achieved by folding the propeller blades in the rest position, allows the arrangement on a work spindle in the work area of the machine tool even during other machining operations; become. If the device is kept in stock in a tool magazine, it takes up relatively little space there and can therefore be compared with another tool, such as a drill or milling cutter. The cleaning tool can also be used when used on other machines, e.g. for blowing off dust.
Das erfindungsgemäße Reinigungswerkzeug kann bedarfs- weise aus mehreren Kunststoffteilen ausgebildet: sein. Die Propellerflügel sind bspw. auf Zapfen schwenkbar gelagert und als Federmittel können Zugfedern (Schraubenfedern) dienen. Jedoch ist es auch möglich, als Federmittel Gummibänder oder sonstige dehnbare Materialien, bspw. in Form von O-Ringen einzusetzen.The cleaning tool according to the invention can, if necessary, be formed from several plastic parts. The propeller blades are pivoted on pivots, for example, and tension springs (coil springs) can serve as spring means. However, it is also possible to use rubber bands or other stretchable materials, for example in the form of O-rings, as the spring means.
Als vorteilhaft hat es sich herausgestellt, wenn die von dem Befestigungsende des Grundhalters in Ruhestellung wegweisenden Propellerflügel als Druck-Luftschraube arbeiten, d.h. einen Luftstrahl erzeugen, der von dem Grundkörper weg gerichtet ist. Die an den einzelnen Propellerflügeln auftretende Reaktionskraf unterstützt die Fliehkraft beim Öffnen der Luftschraube. Dadurch kommt derIt has proven to be advantageous if the propeller blades pointing away from the fastening end of the basic holder in the rest position work as a pressure propeller, i.e. generate an air jet directed away from the base body. The reaction force on the individual propeller blades supports the centrifugal force when opening the propeller. That’s why
- Δ. - Öffnungsvorgang schon bei geringere Drehzahlen relativ zügig zustande, wodurch sichergestellt werden kann, dass alle Propellerflügel gleichzeitig ganz öffnen. Damit werden Unwuchten vermieden. Dies gilt sowohl bei Ausführungen mit 2, 3, 4 bis zu 8 Propellerflügeln.- Δ. - Opening process takes place relatively quickly even at lower speeds, which can ensure that all propeller blades open fully at the same time. This prevents unbalance. This applies to versions with 2, 3, 4 up to 8 propeller blades.
Abweichend von der vorbeschriebenen Ausführungsform kann zur schwenkbaren Lagerung eines jeden Propellerflügels auch ein Filmscharnier verwendet sein, das durch einen streifenförmigen, deformierbaren Kunststo fmaterialbereich gebildet ist. Außerdem können Blattfedern oder dergleichen Anwendung finden.Deviating from the above-described embodiment, a film hinge can also be used for the pivotable mounting of each propeller blade, which is formed by a strip-shaped, deformable plastic material region. Leaf springs or the like can also be used.
Bei einer vereinfachten Ausführungsform können die Federmittel bedarfsweise auch entfallen. Bspw. können die Schwenkachsen der Scharniere gegen die Drehachse des Grundhalters schräg angestellt sein. Dadurch ist es möglich, das Öffnen des Propellers durch das abrupte Beschleunigen der Werkzeugspindel zu bewirken, wobei die Propellerflügel dann durch ihre beim Bewegen der Luft entstehender Reaktionskraft und die Fliehkraft in geöffnetem Zustand gehalten werden. Wird die Arbeitsspindel abrupt gestoppt, bewirkt der Schwung der Propellerflügel dann das Zusammenfalten des Propellers, indem die Flügel wieder in Axialposition schwenken. Bedarfsweise kann an dem Scharnier oder separat ein Reibungsdämpfer oder ein Rastmittel vorgesehen sein, das die Propellerflügel dann in dieser Vorzugsposition (Ruheposition) hält.In a simplified embodiment, the spring means can also be omitted if necessary. E.g. the pivot axes of the hinges can be inclined against the axis of rotation of the basic holder. This makes it possible to bring about the opening of the propeller by abruptly accelerating the tool spindle, the propeller blades then being kept open by the reaction force generated by moving the air and the centrifugal force. If the work spindle is stopped abruptly, the swing of the propeller blades then causes the propeller to collapse by pivoting the blades back into the axial position. If necessary, a friction damper or a locking means can be provided on the hinge or separately, which then holds the propeller blades in this preferred position (rest position).
Vorteilhafte Einzelheiten von Ausführungsformen der Erfindung ergeben sich aus der Zeichnung, der Beschreibung und/oder Unteransprüchen.Advantageous details of embodiments of the invention emerge from the drawing, the description and / or subclaims.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung veranschaulicht. Es zeigen:An exemplary embodiment of the invention is illustrated in the drawing. Show it:
Fig. 1 die erfindungsgemäße -Reinigungseinrichtung im Ruhezustand mit eingeklappten Propellerblättern; Fig. 2 die Reinigungseinrichtung nach Fig. 1 in einer Draufsicht und1 shows the cleaning device according to the invention in the idle state with the propeller blades folded in; Fig. 2 shows the cleaning device of FIG. 1 in a plan view and
Fig. 3 die Reinigungseinrichtung nach den Fig. 1 und 2 in einer Seitenansicht in Arbeitsstellung.Fig. 3 shows the cleaning device according to FIGS. 1 and 2 in a side view in the working position.
6 - Beschreibung6 - description
In Fig. 1 ist ein Reinigungswerkzeug 1 veranschaulicht, das an einer nicht weiter dargestellten, um eine Drehachse 2 drehbaren Arbeitsspindel befestigbar ist. Dazu weist das Reinigungswerkzeug 1 einen Grundhalter 3 auf, der mit einem zur Verbindung mit der Werkzeug- oder Maschinenspindel eingerichteten Kegel- oder Zylinderschaft 4 versehen ist. An diesen schliessc sich ein scheibenförmiger Abschnitt 5 an, der bspw. zur Aufnahme in einem Werkzeugwechsler eingerichtet sein kann. An dem von dem Zylin- derschaft 4 abliegenden Ende ist der einstückig aus Kunststoff oder Metall ausgebildete Grundhalter 3 mit Aufnahmen 6 versehen, die von dem scheibenförmigen Abschnitt 5 axial weg ragen. Ist der Grundhalter 3 aus Kunststoff ausgebildet, kann, wie Fig. 2 veranschaulicht, in seinem Zylinderschaft 4 zur Verstärkung ein Metalleinsatz 7 angeordnet sein, der eine zentrale Bohrung 8 aufweist. Diese kann dazu dienen, Druckluft oder flüssige Medien zuzuführen, um bspw. eine zusätzliche konzentrierte Reinigung durchzuführen.In Fig. 1, a cleaning tool 1 is illustrated, which can be attached to a not shown, rotatable about an axis of rotation 2 work spindle. For this purpose, the cleaning tool 1 has a basic holder 3 which is provided with a tapered or cylindrical shank 4 which is set up for connection to the tool or machine spindle. This is followed by a disk-shaped section 5, which can be set up, for example, for receiving in a tool changer. At the end remote from the cylinder shaft 4, the base holder 3, which is made in one piece from plastic or metal, is provided with receptacles 6 which project axially away from the disk-shaped section 5. If the basic holder 3 is made of plastic, as illustrated in FIG. 2, a metal insert 7 having a central bore 8 can be arranged in its cylindrical shank 4 for reinforcement. This can be used to supply compressed air or liquid media, for example to carry out additional concentrated cleaning.
Die Aufnahmen 6 definieren zwischeneinander Zwischenräume oder Aussparungen 11 mit planen Flanken 12, 13, die einander im Abstand gegenüberliegen und parallel zuein¬ ander angeordnet: sind. Die Aussparungen 11 dienen der Aufnahme von entsprechenden Enden 14 von Propellerflügeln 15. Jedes Ende 14 ist jeweils mit einer Bohrung versehen, die von einem Bolzen durchgriffen ist. Der Bolzen erstreckt sich dabei zwischen zwei Aufnahmen 6 durch die Aussparung 11. In Fig. 1 ist links ein Kopf 16 eines solchen Bolzens sichtbar. Der Bolzen und das Ende 14 des Propellerflügels 15 sind so bemessen, dass der Propellerflügel 15 auf dem Bolzen mit geringem Spiel sitzt und somit leicht schwenkbar ist. Außerdem ist zwischen dem Ende 14 und den beiden Planflächen 12, 13 relativ wenig Spiel vorhanden, so dass der Propellerflügel 15 in der Aussparung 11 geführt ist. Das in Fig. 1 veranschaulichte Reinigungswerkzeug weist insgesamt vier Propellerflügel 15 auf, die jeweils durch Bolzen um quer zu der Drehachse 2 verlaufende Schwenkachsen schwenkbar gelagert sind. Die Schwenkachsen schliessen untereinander jeweils einen Winkel von 90° ein. Sie sind so angeordnet, dass das Beschleunigen und Verzögern der Drehbewegung um die Drehachse 2 keinen Einfluss auf die Schwenkbewegung der Propellerflügel 15 hac . Jedoch können diese unter der Einwirkung der Fliehkraft und aerodynamischer Kräfte aus ihrer in Fig. 1 veranschaulichten Axialposition, die die Ruheposition ist, in eine in Fig. 3 veranschaulichte Radialposition geschwenkt werden, die die Arbeitsposition darstellt. Um die Propellerflügel 15 bei Nichtgebrauch in Ruheposition zu halten, sind, wie insbesondere aus Fig. 3 hervorgeht, zwischen dem Grundkörper oder Grundhalter 3 und jedem Propellerflügel 15 Federmittel 17, 17' angeordnet. Als Federmittel dient bspw. eine Zugfeder 17, die mit einem Ende in eine Öse 18 eingehängt ist, die in der Nähe des Endes 14 des Propellerflügels 15 einstückig an diesem ausgebildet ist. Mit ihrem anderen Ende greift die Zugfeder 17 in eine Querbohrung 19, die an einem zentralen Axialfortsatz 21 des Grundhalters 3 angeordnet ist. Als Rückholeinrichtung kann anstelle der Zugfeder 17 auch ein Gummiband oder ein O- Ring 17' dienen, wie in Fig. 3 links dargestellt ist.The receptacles 6 define between them spaces or recesses 11 with plane flanks 12, 13 which oppose each other at a distance and arranged in parallel on the other zuein ¬: are. The recesses 11 serve to receive corresponding ends 14 of propeller blades 15. Each end 14 is each provided with a bore through which a bolt passes. The bolt extends between two receptacles 6 through the recess 11. A head 16 of such a bolt is visible on the left in FIG. 1. The bolt and the end 14 of the propeller blade 15 are dimensioned such that the propeller blade 15 sits on the bolt with little play and is therefore easily pivotable. In addition, there is relatively little play between the end 14 and the two flat surfaces 12, 13, so that the propeller blade 15 is guided in the recess 11. The cleaning tool illustrated in FIG. 1 has a total of four propeller blades 15, each of which is pivotably supported by bolts about pivot axes extending transversely to the axis of rotation 2. The swivel axes each form an angle of 90 ° with each other. They are arranged so that the acceleration and deceleration of the rotary movement about the axis of rotation 2 has no influence on the pivoting movement of the propeller blades 15 hac. However, under the action of centrifugal force and aerodynamic forces, they can be pivoted from their axial position illustrated in FIG. 1, which is the rest position, into a radial position illustrated in FIG. 3, which represents the working position. In order to keep the propeller blades 15 in the rest position when not in use, spring means 17, 17 'are arranged between the base body or base holder 3 and each propeller blade 15, as can be seen in particular in FIG. 3. For example, a tension spring 17 is used as the spring means. One end of the tension spring is hooked into an eyelet 18, which is formed in one piece near the end 14 of the propeller blade 15. With its other end, the tension spring 17 engages in a transverse bore 19 which is arranged on a central axial extension 21 of the basic holder 3. Instead of the tension spring 17, a rubber band or an O-ring 17 'can also serve as a return device, as shown on the left in FIG. 3.
Der zentrale Axialfortsatz 21 kann als Düse für reinigungsmittel ausgebildet sein. Er weist dazu die aus Fig. 2 ersichtliche Durchgangsbohrung 8 auf. Bedarfsweise kann die Mündung der Durchgangsbohrung 8 im Bereich des Axialfortsatzes 21 eine Düsenkontur (Venturidüse , Flach- strahldüse oder andere Düsenform zur Erhöhung der Reinigungswirkung mit geringem Fluideinsatz) aufweisen. Das insoweit beschriebene Reinigungswerkzeug 1 arbeitet wie folgt:The central axial extension 21 can be designed as a nozzle for cleaning agents. For this purpose, it has the through bore 8 shown in FIG. 2. If necessary, the opening of the through bore 8 in the area of the axial extension 21 can have a nozzle contour (Venturi nozzle, flat jet nozzle or other nozzle shape to increase the cleaning effect with little use of fluid). The cleaning tool 1 described so far works as follows:
Während des normalen Betriebs der Werkzeugmaschine wird das Reinigungswerkzeug 12 nicht um die Drehachse 2 gedreht. Die Rückholeinrichtung, die durch die Federn 17 gebildet ist, hält die Propellerflügel 15 deshalb in der in Fig. 1 veranschaulichten Position unabhängig von der Einbaulage der Arbeitsspindel der Werkzeugmaschine, d.h. sowohl bei hängender als auch bei liegender Montage derselben.During normal operation of the machine tool, the cleaning tool 12 is not rotated about the axis of rotation 2 turned. The return device, which is formed by the springs 17, therefore holds the propeller blades 15 in the position illustrated in FIG. 1 irrespective of the installation position of the work spindle of the machine tool, that is to say both in the case of hanging and lying installation thereof.
Soll der Arbeitsbereich der Werkzeugmaschine nun gereinigt werden, wird das Reinigungswerkzeug 1 um die Drehachse 2 beschleunigt. Die an den Propellerflügeln 15 angreifende Fliehkraft bewirkt nun ein Entfalten des Propellers, indem die Propellerflügel 15 um ihre Schwenkachsen nach außen geschwenkt werden. Die Einrichtung ist für Rechtsdrehung ausgelegt und das Profil der Propellerflügel 15 ist so gestaltet, dass sich diese nach Einleiten einer zunehmenden Rotationsbewegung um die Drehachse 2 zunächst aus der Ruhestellung (Fig. 1) durch Einwirkung der Fliehkraft in Richtung der Arbeitsstellung (Fig. 3) bewegen. Durch die weiter steigende Drehzahl und den Einfluss des Luftwiderstands, d.h. die Reaktionskraft des erzeugten Luftstrahls auf die Propellerblätter 15, bewegen sich die Propellerblätter 15 endgültig in die Endlage der Arbeitsstellung nach Fig. 3. In dieser Stellung liegen sie an dem Abschnitt 5 des Grundhalters 3 an. Der Abschnitt 5 bildet somit einen Anschlagring, der die auf die Propellerflügel 15 einwirkenden erheblichen Reaktionskräfte aufnimmt. Die Druckkraft des Luftstrahls (Reaktionskraft) drückt die Propellerflügel 15 so fest an den Anschlagring 5 an, dass der drehende Propeller praktisch starr ist. Er kann deshalb auch geschwenkt werden, ohne dass Kreiselkräfte zum Auslenken einzelner Propellerflügel aus ihrer Radiallage führen könnten. Eine Schwenkbewegung des Propellers kann dazu dienen, den Reinigungsbereich zu vergrößern .If the working area of the machine tool is now to be cleaned, the cleaning tool 1 is accelerated about the axis of rotation 2. The centrifugal force acting on the propeller blades 15 now causes the propeller to unfold, in that the propeller blades 15 are pivoted outward about their pivot axes. The device is designed for clockwise rotation and the profile of the propeller blades 15 is designed such that, after initiating an increasing rotational movement about the axis of rotation 2, they initially move out of the rest position (FIG. 1) by the action of the centrifugal force in the direction of the working position (FIG. 3) move. Due to the further increasing speed and the influence of air resistance, i.e. the reaction force of the air jet generated on the propeller blades 15, the propeller blades 15 finally move into the end position of the working position according to FIG. 3. In this position they rest on the section 5 of the basic holder 3. The section 5 thus forms a stop ring which absorbs the considerable reaction forces acting on the propeller blades 15. The pressure force of the air jet (reaction force) presses the propeller blades 15 so firmly against the stop ring 5 that the rotating propeller is practically rigid. It can therefore also be swiveled without gyro forces leading to the deflection of individual propeller blades from their radial position. A swiveling movement of the propeller can serve to enlarge the cleaning area.
Nach Erreichen der Arbeitsstellung wird ein Luftstrom, insbesondere in axialer Richtung von der Arbeits- spindel der Werkzeugmaschine weg erzeugt. Der Luftstrahl bläst die im Arbeitsbereich vorhandenen Späne und sonstige Verschmutzungen ab. Die Reinigungswirkung lässt sich durch die Drehzahl des Reinigungswerkzeugs beeinflussen. Außerdem kann der gereinigte Bereich durch seitliches gezieltes Verstellen der Arbeitsspindel vergrößert werden.After reaching the working position, an air flow is generated, in particular in the axial direction away from the work spindle of the machine tool. The air jet blows off the chips and other dirt present in the work area. The cleaning effect can be influenced by the speed of the cleaning tool. In addition, the cleaned area can be enlarged by specifically adjusting the work spindle to the side.
Zur Beendigung des Reinigungsvorgangs wird die Drehbewegung des Reinigungswerkzeugs 1 angehalten. Dadurch fällt sowohl die die Propellerblätter 15 gespreizt haltende Fliehkraft als auch die Reaktionskraft des Luftstrahls, die auf den Propellerblättern 15 lastet, weg. Die Rückholeinrichtung klappt nun die Propellerblätter in ihre Stellung nach Fig. 1 in Ruheposition. Die Federn der Rückhol - einrichtung sind so dimensioniert, dass die Federkraft bei zunehmender Drehzahl und ab einer bestimmten nicht zu großen Drehzahl von der Fliehkraft sicher überwunden wird. Die Federkraft ist jedoch so groß, dass die Propellerflügel 15 in ihre Ruhestellung zurückgeschwenkt werden, wenn das Reinigungswerkzeug 1 nicht dreht. Außerdem ist sie so groß, dass die Ruhestellung auch dann eingehalten wird, wenn die Einrichtung horizontal bspw. in Werkzeugwechselmagazinen eingesetzt wird.At the end of the cleaning process, the rotary movement of the cleaning tool 1 is stopped. As a result, both the centrifugal force which keeps the propeller blades 15 spread and the reaction force of the air jet which bears on the propeller blades 15 are eliminated. The return device now folds the propeller blades into their position according to FIG. 1 in the rest position. The springs of the return device are dimensioned so that the spring force is surely overcome by the centrifugal force as the speed increases and from a certain speed that is not too high. However, the spring force is so great that the propeller blades 15 are pivoted back into their rest position when the cleaning tool 1 is not rotating. In addition, it is so large that the rest position is maintained even when the device is used horizontally, for example in tool changing magazines.
Alternativ ist es möglich auf die Rückholeinrichtung 17 zu verzichten, wenn die Propellerflügel um Schwenkachsen schwenkbar gelagert sind, die in Bezug auf die Drehachse 2 schräg angestellt sind. Bspw. kann die Schwenkachse eine Schrägstellung aufweisen, die im Wesentlichen mit der Steigung des Propellerflügels 15 übereinstimmt. Beim Beschleunigen des Reinigungswerkzeugs 1 um die Drehachse 2 werden dadurch die Propellerflügel 15 entfaltet, während sie beim Abbremsen zusammengefaltet werden. Zur Fixierung in der Ruheposition können nicht zu starke Rastmittel vorgesehen sein, die zwischen dem Grundhalter 3 und den Propellerflügeln 15 wirken. Außerdem ist es möglich hier einen Reibschluss vorzusehen, bspw. durch zwischengelegte O-Ringe.Alternatively, it is possible to dispense with the return device 17 if the propeller blades are pivotally mounted about pivot axes which are inclined with respect to the axis of rotation 2. E.g. For example, the pivot axis can have an inclined position which essentially corresponds to the pitch of the propeller blade 15. When the cleaning tool 1 is accelerated about the axis of rotation 2, the propeller blades 15 are thereby unfolded, while they are folded together when braking. To fix in the rest position not too strong locking means can be provided, which act between the base bracket 3 and the propeller blades 15. It is also possible to provide a frictional connection here, for example by interposed O-rings.
- 10 - - 10 -

Claims

Patentansprüche : Claims:
1. Einrichtung (1) zur Reinigung des Arbeitsbereiches von Werkzeugmaschinen, insbesondere Zerspanungsmaschinen,1. Device (1) for cleaning the work area of machine tools, in particular metal-cutting machines,
mit einem Grundhalter (3), der mit wenigstens einem Verbindungsmittel (4) versehen ist, das die Befestigung des Grundhalters (3) an einer um eine Drehachse (2) drehend antreibbaren Werkzeugspindel gestattet,with a basic holder (3) which is provided with at least one connecting means (4) which allows the basic holder (3) to be fastened to a tool spindle which can be driven to rotate about an axis of rotation (2),
mit wenigstens zwei Propellerflügeln (15), die jeweils mit einem Scharniermittel (14) um eine mit der Drehachse (2) nicht übereinstimmende Schwenkachse aus einer Ruheposition in eine Arbeitsposition und zurück schwenkbar gelagert sind.with at least two propeller blades (15), each of which is pivotally mounted with a hinge means (14) about a pivot axis which does not match the axis of rotation (2) from a rest position to a working position and back.
2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Schwenkachsen quer, vorzugsweise rechtwinklig zu der Drehachse (2) ausgerichtet sind.2. Device according to claim 1, characterized in that the pivot axes are aligned transversely, preferably at right angles to the axis of rotation (2).
3. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Propellerflügel (15) mit einem Federmittel3. Device according to claim 1, characterized in that the propeller blades (15) with a spring means
(17) verbunden sind, dass den jeweiligen Propellerflügel (15) auf seine Ruheposition hin vorspannt.(17) are connected so that the respective propeller blade (15) is biased towards its rest position.
4. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Propellerflügel (15) in seiner Ruheposition im wesentlichen parallel zu der Drehachse (2) gehalten ist .4. Device according to claim 1, characterized in that the propeller blade (15) is held in its rest position substantially parallel to the axis of rotation (2).
5. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Scharniermittel (14) einen Bolzen oder Zapfen aufweist, auf dem der Propellerflügel (15) mit einer entsprechenden Bohrung sitzt.5. Device according to claim 1, characterized in that the hinge means (14) has a bolt or pin on which the propeller blade (15) sits with a corresponding bore.
6. Einrichtung nach Anspruch 1, dadurch gekennzeich¬ net, dass die Propellerflügel (15) bei Drehung des Grund¬ körpers (3) durch Fliehkraft in ihre Arbeitsposition6. Device according to claim 1, characterized in ¬ net, that the propeller blades (15) upon rotation of the base ¬ body (3) by centrifugal force into its working position
- 11 - überführbar sind.- 11 - are transferable.
7. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Propellerflügel (15) derart angestellt sind, dass die bei der Luftstrahlerzeugung entstehende Reak- tionskraft das Schwenken der Propellerflügel (15) aus der Ruheposition in die Arbeitsposition unterstützt.7. Device according to claim 1, characterized in that the propeller blades (15) are adjusted in such a way that the reaction force which arises when the air jet is generated supports the pivoting of the propeller blades (15) from the rest position into the working position.
8. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Propellerflügel (15) derart angestellt sind, dass sie einen von der Werkzeugspindel weg gerichteten Strahl erzeugen.8. Device according to claim 1, characterized in that the propeller blades (15) are adjusted such that they generate a jet directed away from the tool spindle.
9. Einrichtung nach Anspruch 8 , dadurch gekennzeichnet, dass die Propellerflügel (15) den von der Werkzeugspindel weg gerichteten Strahl bei Rechtsdrehung der Werkzeugspindel erzeugen.9. Device according to claim 8, characterized in that the propeller blades (15) generate the jet directed away from the tool spindle when the tool spindle is turned clockwise.
10. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Scharniεrmittel (14) durch einen deformierbaren Materiealbereich gebildet ist.10. Device according to claim 1, characterized in that the hinge means (14) is formed by a deformable material area.
11. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Scharniermittel (14) ein Federscharnier oder ein Filmscharnier ist.11. The device according to claim 1, characterized in that the hinge means (14) is a spring hinge or a film hinge.
12. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Federmittel (17) durch jeweils wenigstens eine Zugfeder gebildet ist.12. The device according to claim 1, characterized in that the spring means (17) is formed by at least one tension spring.
13. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Federmittεl (17') durch ein Band aus einem zugelastischen Material, vorzugsweise durch einen elastischen Ring gebildet ist.13. The device according to claim 1, characterized in that the Federmittεl (17 ') is formed by a band made of an elastic material, preferably by an elastic ring.
14. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Schwenkachsen der S-charniermittel (14) schräg zu der Drehachse (2) ausgerichtet sind.14. Device according to claim 1, characterized in that the pivot axes of the S-charniermittel (14) are aligned obliquely to the axis of rotation (2).
- 12 - - 12 -
15. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Schwenkbewegung der Scharniermittel (14) durch ein Sperrmittel gehemmt ist.15. The device according to claim 1, characterized in that the pivoting movement of the hinge means (14) is inhibited by a locking means.
16. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Sperrmittel ein Reibungsmittel oder ein Rastmittel ist .16. The device according to claim 1, characterized in that the locking means is a friction means or a locking means.
17. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Grundhalter (3) mit wenigstens einer Bohrung versehen ist, durch die Luft oder Kühlschmiermittel zuführbar ist .17. The device according to claim 1, characterized in that the base holder (3) is provided with at least one bore through which air or cooling lubricant can be supplied.
- 13 - - 13 -
EP99932428A 1998-02-03 1999-01-20 Device for cleaning the working area of chip removal machines Withdrawn EP0991495A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE29801719U 1998-02-03
DE29801719U DE29801719U1 (en) 1998-02-03 1998-02-03 Equipment for cleaning the work area on metal cutting machines from chips, cooling lubricants and contaminants
DE19820105 1998-05-06
DE19820105A DE19820105C1 (en) 1998-02-03 1998-05-06 Equipment for cleaning the work area on cutting machines
PCT/DE1999/000112 WO1999039866A1 (en) 1998-02-03 1999-01-20 Device for cleaning the working area of chip removal machines

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EP0991495A1 true EP0991495A1 (en) 2000-04-12

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EP99932428A Withdrawn EP0991495A1 (en) 1998-02-03 1999-01-20 Device for cleaning the working area of chip removal machines

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US (1) US6161994A (en)
EP (1) EP0991495A1 (en)
JP (1) JP2001519727A (en)
AU (1) AU3245699A (en)
WO (1) WO1999039866A1 (en)

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Also Published As

Publication number Publication date
US6161994A (en) 2000-12-19
AU3245699A (en) 1999-08-23
WO1999039866A1 (en) 1999-08-12
JP2001519727A (en) 2001-10-23

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