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WO2005049267A1 - Hand-held machine tool with a non-uniform movement of said tool - Google Patents

Hand-held machine tool with a non-uniform movement of said tool Download PDF

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Publication number
WO2005049267A1
WO2005049267A1 PCT/DE2004/002125 DE2004002125W WO2005049267A1 WO 2005049267 A1 WO2005049267 A1 WO 2005049267A1 DE 2004002125 W DE2004002125 W DE 2004002125W WO 2005049267 A1 WO2005049267 A1 WO 2005049267A1
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WO
WIPO (PCT)
Prior art keywords
tool
machine tool
gear
drive
hand
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.)
Ceased
Application number
PCT/DE2004/002125
Other languages
German (de)
French (fr)
Inventor
Andreas Strasser
Thilo Henke
Andreas Schlegel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to EP04786841A priority Critical patent/EP1687117A1/en
Publication of WO2005049267A1 publication Critical patent/WO2005049267A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02Driving main working members
    • B23Q5/027Driving main working members reciprocating members
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D51/00Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
    • B23D51/16Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of drives or feed mechanisms for straight tools, e.g. saw blades, or bows
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q15/00Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/007Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
    • B23Q15/0075Controlling reciprocating movement, e.g. for planing-machine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22Feeding members carrying tools or work
    • B23Q5/34Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00Drives or gearings; Equipment therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D16/00Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/001Gearings, speed selectors, clutches or the like specially adapted for rotary tools

Definitions

  • the present invention is based on a hand tool according to the preamble of claim 1.
  • the handheld power tool with the features of claim 1 has the advantage that the loads and wear on the motor and motion transmission components are lower and the overall efficiency and the service life of the handheld power tool are significantly improved.
  • the drive is designed as a hydraulic or pneumatic cylinder, it can be controlled particularly precisely.
  • the tool is an insert tool, it can easily be exchanged for different tools for different purposes.
  • gearbox is a coupling or stepping or cam gear
  • the hand tool is designed as a planer or hand milling machine, as a drilling machine, hammer drill, hammer, as an orbital, eccentric or angle grinder, as a circular or reciprocating saw, as a scraper or as scissors, you can help with the corresponding, specific work energy-saving and wear-reducing movement types can be set at lightning speed for the respective hand tool if the tool does not engage in the workpiece.
  • FIG. 1 shows a three-dimensional side view of a hand-held saw machine according to the invention
  • FIG. 2 shows a longitudinal section of the hand-held saw machine according to FIG. 1
  • FIG. 3 shows a typical movement curve of the desired non-uniform tool movements.
  • FIG. 1 shows a hand-held saw 10 with an elongated housing 11, the rear area of which serves as a motor housing 12 and the front area of which serves as a gear housing 14.
  • a power connection cable 16 emerges from the rear of the motor housing 12 and an elongated saw blade 18 that can be moved back and forth or back and forth from the transmission housing 14 at the front.
  • FIG. 2 shows a longitudinal section of the hand-held saw 10 according to FIG. 1, an electric motor 20 mounted in the motor housing 12 and serving as a drive, with a motor shaft 24 which can be coupled to a transmission input shaft 23 which belongs to a transmission 22 which is in the transmission housing 14 of the hand-held saw 10 is stored.
  • An output tappet 26 emerging from the gear 22 on the left in the viewing direction executes a straight forward and backward movement, which is transmitted to the saw blade 18 and is represented by the movement arrow 28.
  • a servo motor or a stepper motor, but also a hydraulic or pneumatic cylinder with a corresponding control device can serve as the drive.
  • the gear 22 can be a spur gear with non-circular gears, or a toothed belt gear with non-circular toothed belts or as a coupling gear or stepping gear or cam gear.
  • the non-uniformity of the movement is determined by the dimensioning or setting of the aforementioned types of gears.
  • both separately generated forms of acceleration can be generated by both the drive and the gearing can be combined with each other to create a wide variability of the initial movement on the tool.
  • the lifting movement of the scraper tool can be carried out quickly with low torque and the subsequent retraction without workpiece intervention.
  • the cutting stroke of the shear jaws can be carried out with high torque and slow speed and the return movement for opening with high speed and low torque can be carried out.
  • the working stroke is at lower speed and higher torque than the idle stroke
  • the saw blade does not intervene, while routing, vibratory and eccentric grinders, angle grinders, circular saws and the like.
  • the superimposition of a pulsating over the uniform rotating movement improves the working behavior, e.g. in the case of sensor-controlled, quasi-automatic reduction of power or torque if the associated tools do not engage in a workpiece.
  • a gearbox can be connected between the motor and the tool, or the energy can be passed on directly to the tool.
  • Gear units operating in a non-uniform manner will be combined with both a uniformly rotating and a non-uniformly rotating drive.
  • FIG. 3 shows the waveform of a periodically non-uniform rotary movement as a path-time curve display. For example, with rapid turning in idle stroke when the reciprocating saw blade is retracting and with slow, powerful turning during the working stroke when the workpiece saw engages with the reciprocating saw blade. It goes without saying that the invention is not restricted to hand-held machine tools, but can also be used without any problems for stationary machine tools.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Sawing (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention relates to a machine tool, in particular, a hand-held machine tool, comprising a tool (18) which can be displaced by a drive, in particular, a motor (20). The aim of the invention is to increase efficiency, reduce energy consumption and increase the service life of said machine. Said drive is an electomotor which rotates in a uniform manner, and the movement thereof is converted by a gear mechanism (22) into a non-uniform movement and is transmitted to the tool (18).

Description

HANDWERKZEUGMASCHINE MIT UNGLEICHFÖRMIGER BEWEGUNG DES WERKZEUGS HAND MACHINE TOOL WITH UNIFORMED MOVEMENT OF THE TOOL

Stand der TechnikState of the art

Die vorliegende Erfindung geht aus von einer Handwerkzeugmaschine nach dem Ober- begriff des Anspruchs 1.The present invention is based on a hand tool according to the preamble of claim 1.

Aus der DE 102 30 726 AI ist eine Stichsäge mit einem Linearmotor bekannt, der eine einstellbare, ungleichförmig beschleunigte Bewegung des Werkzeugs ermöglicht, so dass dieses individuell für jeden Bearbeitungsfall beim Werkstückeingriff langsam mit hohem Drehmoment oder schneller mit geringerem Drehmoment einstellbar bewegbar ist.From DE 102 30 726 AI a jigsaw with a linear motor is known, which enables an adjustable, non-uniformly accelerated movement of the tool, so that it can be moved individually with a high torque or faster with a lower torque for each machining case during workpiece intervention.

Robuste, für Handwerkzeugmaschinen brauchbare Linearmotoren sind zu schwer und zu teuer für eine breite Anwendung bei Handwerkzeugmaschinen.Robust linear motors that can be used for hand-held machine tools are too heavy and too expensive for wide use in hand-held machine tools.

Vorteile der ErfindungAdvantages of the invention

Die Handwerkzeugmaschine mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass die Belastungen und der Verschleiß an Motor und Bewegungsübertragungsbauteilen geringer und der Gesamtwirkungsgrad sowie die Lebensdauer der Handwerkzeugmaschine deutlich verbessert werden.The handheld power tool with the features of claim 1 has the advantage that the loads and wear on the motor and motion transmission components are lower and the overall efficiency and the service life of the handheld power tool are significantly improved.

Durch Einsatz eines besonders genau steuerbaren, robusten Motors kann bei bestimmten Handwerkzeugmaschinen ein sonst übliches Getriebe eingespart werden. Dadurch, dass der Antrieb als Hydraulik- oder Pneumatikzylinder ausgestaltet ist, ist er besonders präzise steuerbar.By using a particularly precisely controllable, robust motor, an otherwise usual gear can be saved in certain handheld power tools. Because the drive is designed as a hydraulic or pneumatic cylinder, it can be controlled particularly precisely.

Dadurch, dass das Werkzeug ein Einsatzwerkzeug ist, kann es gegen unterschiedliche Werkzeuge für unterschiedliche Einsatzzwecke leicht ausgetauscht werden.Because the tool is an insert tool, it can easily be exchanged for different tools for different purposes.

Dadurch, dass ein herkömmlicher, gleichförmig drehender Elektromotor verwendet wird, dessen Bewegung über ein Getriebe so gewandelt wird, dass beispielsweise über Unrundzahnräder oder Unrundzahnriemen die gleichförmige Motorbewegung in eine ungleich- förmige Ausgangsbewegung des Getriebes umgewandelt wird, kann für jeden Handwerkzeugmaschinentyp ein kostengünstiger, robuster Motor mit einem speziellen, individuell auswählbaren Getriebe kombiniert werden, mit dem insbesondere im Leerlauf Energie gespart und die Belastung der Kraftübertragungselemente gesenkt wird.The fact that a conventional, uniformly rotating electric motor is used, the movement of which is converted via a gear so that, for example, non-circular gearwheels or non-circular toothed belts convert the uniform motor movement into a non-uniform output movement of the transmission, can be a cost-effective, robust motor for each type of machine tool can be combined with a special, individually selectable gearbox, which saves energy, especially when idling, and reduces the load on the power transmission elements.

Dadurch, dass das Getriebe ein Koppel- oder Schritt- oder Kurvengetriebe ist, kann dasBecause the gearbox is a coupling or stepping or cam gear, this can

Werkzeug mit einer periodisch ungleichförmigen Bewegung angetrieben werden.Tool are driven with a periodically non-uniform movement.

Dadurch, dass ein ungleichförmig antreibender Motor mit einem Getriebe kombiniert wird, das ebenfalls ungleichförmige Bewegungen erzeugt, kann eine Vielzahl ungleich- förmiger Bewegungsvarianten am Werkzeug für einen optimalen Arbeitsfortschritt in nahezu allen möglichen Arbeitsfällen einstellbar erzielt werden.The fact that a non-uniform driving motor is combined with a gear that also generates non-uniform movements means that a large number of non-uniform movement variants on the tool can be achieved in an adjustable manner for optimal work progress in almost all possible work cases.

Dadurch, dass die Handwerkzeugmaschine als Hobel oder Handfräsmaschine, als Bohrmaschine, Bohrhammer, Schlaghammer, als Schwing-, Exzenter- oder Winkelschleifer, als Kreis- oder Hubsäge, als Schaber oder als Schere ausgestaltet ist, können bei den ent- , sprechenden spezifischen Arbeiten mit dem jeweiligen Handwerkzeug bei Nichteingriff des Werkzeugs im Werkstück energiesparende und verschleißmindernde Bewegungsarten blitzschnell eingestellt werden.Because the hand tool is designed as a planer or hand milling machine, as a drilling machine, hammer drill, hammer, as an orbital, eccentric or angle grinder, as a circular or reciprocating saw, as a scraper or as scissors, you can help with the corresponding, specific work energy-saving and wear-reducing movement types can be set at lightning speed for the respective hand tool if the tool does not engage in the workpiece.

Zeichnungdrawing

Nachstehend wird die Erfindung an Hand eines Ausführungsbeispiels mit zugehöriger Zeichnung näher erläutert.The invention is explained in more detail below on the basis of an exemplary embodiment with the associated drawing.

Es zeigen Fig. 1 eine räumliche Seitenansicht einer erfindungsgemäßen Handhubsägemaschine, Fig. 2 einen Längsschnitt der Handhubsägemaschine nach Fig. 1 und Fig. 3 eine typische Bewegungskurve der angestrebten ungleichförmigen Werkzeugbewegungen.Show it 1 shows a three-dimensional side view of a hand-held saw machine according to the invention, FIG. 2 shows a longitudinal section of the hand-held saw machine according to FIG. 1 and FIG. 3 shows a typical movement curve of the desired non-uniform tool movements.

Ausfuhrungsbeispielexemplary

Fig. 1 zeigt eine Handhubsägemaschine 10 mit einem länglichen Gehäuse 11, dessen hinterer Bereich als Motorgehäuse 12 und dessen vorderer Bereich als Getriebegehäuse 14 dient.1 shows a hand-held saw 10 with an elongated housing 11, the rear area of which serves as a motor housing 12 and the front area of which serves as a gear housing 14.

Hinten tritt aus dem Motorgehäuse 12 ein Stromanschlusskabel 16 und vorne aus dem Getriebegehäuse 14 ein hin- und her bzw. vor- und zurückbewegbares, längliches Sägeblatt 18.A power connection cable 16 emerges from the rear of the motor housing 12 and an elongated saw blade 18 that can be moved back and forth or back and forth from the transmission housing 14 at the front.

Fig. 2 zeigt im Längsschnitt der Handhubsägemaschine 10 gemäß Fig. 1 einen im Motorgehäuse 12 gelagerten, als Antrieb dienenden Elektromotor 20 mit einer Motorwelle 24, die mit einer Getriebeeingangswelle 23 kuppelbar ist, die zu einem Getriebe 22 gehört, das im Getriebegehäuse 14 der Handhubsägemaschme 10 gelagert ist.2 shows a longitudinal section of the hand-held saw 10 according to FIG. 1, an electric motor 20 mounted in the motor housing 12 and serving as a drive, with a motor shaft 24 which can be coupled to a transmission input shaft 23 which belongs to a transmission 22 which is in the transmission housing 14 of the hand-held saw 10 is stored.

Ein in Betrachtungsrichtung links aus dem Getriebe 22 tretender Abtriebsstößel 26 führt eine gerade Vor- und Zurückbewegung aus, die auf das Sägeblatt 18 übertragen wird und durch den Bewegungspfeil 28 dargestellt ist. Als Antrieb kann ein Servomotor oder ein Schrittmotor aber auch ein Hydraulik- oder Pneumatikzylinder mit entsprechender Re- gelungseinrichtung dienen.An output tappet 26 emerging from the gear 22 on the left in the viewing direction executes a straight forward and backward movement, which is transmitted to the saw blade 18 and is represented by the movement arrow 28. A servo motor or a stepper motor, but also a hydraulic or pneumatic cylinder with a corresponding control device can serve as the drive.

Das Getriebe 22 kann ein Stirnradgetriebe mit Unrundzahnrädern sein, oder ein Zahnriemengetriebe mit Unrundzahnriemen bzw. als Koppelgetriebe oder Schrittgetriebe bzw. Kurvengetriebe ausgestaltet sein. Bei Kombination der genannten Getriebearten mit ei- nem gleichförmig drehenden Servomotor wird die Ungleichförmigkeit der Bewegung durch die Dimensionierung bzw. Einstellung der vorgenannten Getriebearten bestimmt. Bei einer Kombination der genannten Getriebearten mit einem gesondert ansteuerbaren Schrittmotor oder mit einem Hydraulik- oder Pneumatikzylinder können sowohl durch den Antrieb als auch das Getriebe jeweils gesondert erzeugte Beschleunigungsformen miteinander kombiniert werden zu einer breiten Variierbarkeit der Ausgangsbewegung am Werkzeug gestaltet werden.The gear 22 can be a spur gear with non-circular gears, or a toothed belt gear with non-circular toothed belts or as a coupling gear or stepping gear or cam gear. When the aforementioned types of gears are combined with a uniformly rotating servo motor, the non-uniformity of the movement is determined by the dimensioning or setting of the aforementioned types of gears. When the aforementioned types of gears are combined with a separately controllable stepper motor or with a hydraulic or pneumatic cylinder, both separately generated forms of acceleration can be generated by both the drive and the gearing can be combined with each other to create a wide variability of the initial movement on the tool.

So könnte beispielsweise bei einem Bohrhammer nicht nur die Schlagbewegung un- gleichförmig, d.h. die axiale Bewegung des Hammerbohrers, sondern auch dessen Drehung ungleichförmig verlaufend gestaltet sein.For example, in a rotary hammer, not only could the impact movement be non-uniform, i.e. the axial movement of the hammer drill, but also its rotation can be made non-uniform.

Bei einem Hobel kann durch ungleichförmiges Bewegen des Hobelmessers dessen Wirkungsgrad erhöht werden, wenn bei einem Eingriff ins Werkstück mit verringerter Um- fangsgeschwindigkeit und hohem Drehmoment aber im Bereich des Nichteingriff desIn the case of a planer, its efficiency can be increased by moving the planer knife non-uniformly, if, however, in the case of an intervention in the workpiece with reduced peripheral speed and high torque in the area of non-engagement of the

Hobelmessers dieses bei minimalem Drehmoment schneller gedreht wird.Planer knife this is turned faster with minimal torque.

Bei einem Schaber kann die Hubbewegung des Schabewerkzeugs nach vom mit hohem Drehmoment und das anschließende Zurückfahren ohne Werkstückeingriff schnell und mit geringem Drehmoment erfolgen.With a scraper, the lifting movement of the scraper tool can be carried out quickly with low torque and the subsequent retraction without workpiece intervention.

Bei Scheren oder Nagern ist der Schneidhub der Scherbacken mit hohem Drehmoment und langsamer Geschwindigkeit und das Zurückfahren zum Öffnen mit hoher Geschwindigkeit und geringem Drehmoment vollziehbar. Bei Pendelsägemaschinen ist der Ar- beitshub mit niedrigerer Geschwindigkeit und höherem Drehmoment als der Leerhub beiIn the case of scissors or rodents, the cutting stroke of the shear jaws can be carried out with high torque and slow speed and the return movement for opening with high speed and low torque can be carried out. With pendulum saws, the working stroke is at lower speed and higher torque than the idle stroke

Nichteingriff des Sägeblatts zu vollziehen, während bei Oberfräsen, bei Schwing- und Exzenterschleifern, Winkelschleifern, Kreissägen und dgl. das Überlagern einer pulsierenden über die gleichförmige drehende Bewegung das Arbeitsverhalten verbessert, z.b. bei sensorgesteuerter, quasi automatische Zurücknahme der Leistung bzw. des Drehmo- mentes bei Nichteingriff der zugehörigen Werkzeuge in ein Werkstück.The saw blade does not intervene, while routing, vibratory and eccentric grinders, angle grinders, circular saws and the like. The superimposition of a pulsating over the uniform rotating movement improves the working behavior, e.g. in the case of sensor-controlled, quasi-automatic reduction of power or torque if the associated tools do not engage in a workpiece.

Bei ungleichförmig antreibendem Antrieb kann ein Getriebe zwischen Motor und Werkzeug geschaltet sein oder die Energie unmittelbar an das Werkzeug weitergegeben werden. Ungleichförmig arbeitende Getriebe werden sowohl mit einem gleichförmig drehen- den als auch mit ungleichförmig drehendem Antrieb kombiniert werden.If the drive is non-uniform, a gearbox can be connected between the motor and the tool, or the energy can be passed on directly to the tool. Gear units operating in a non-uniform manner will be combined with both a uniformly rotating and a non-uniformly rotating drive.

Figur 3 zeigt den Schwingungsverlauf einer periodisch ungleichförmig verlaufenden Drehbewegung als Weg-Zeit-Kurvendarstellung. z.B. mit raschem Drehen im Leerhub beim Zurücklaufen des Hubsägeblatts und mit langsam-kraftvollem Drehen beim Ar- beitshub beim Werksttickeingriff des Hubsägeblatts. Es versteht sich, dass die Erfindung nicht auf Handwerkzeugmaschinen beschränkt ist, sondern ohne weiteres auch für stationäre Werkzeugmaschinen verwendbar ist. FIG. 3 shows the waveform of a periodically non-uniform rotary movement as a path-time curve display. For example, with rapid turning in idle stroke when the reciprocating saw blade is retracting and with slow, powerful turning during the working stroke when the workpiece saw engages with the reciprocating saw blade. It goes without saying that the invention is not restricted to hand-held machine tools, but can also be used without any problems for stationary machine tools.

Claims

Ansprüche Expectations 1. Werkzeugmaschine, insbesondere Handwerkzeugmaschine, mit durch einen Antrieb, insbesondere Motor (20), bewegtem Werkzeug (18), dadurch gekennzeichnet^ dass der Antrieb ein gleichförmig drehender Elektromotor ist, dessen Bewegung über ein Getriebe (22) in eine ungleichförmige Bewegung gewandelt und auf das Werkzeug (18) übertragen wird.1. Machine tool, in particular hand-held machine tool, with a tool (18) moved by a drive, in particular a motor (20), characterized in that the drive is a uniformly rotating electric motor, the movement of which is converted into a non-uniform movement via a gear (22) and is transferred to the tool (18). 2. Werkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, dass der Antrieb als Hydraulik- oder Pneumatikzylinder, insbesondere mit einer zugeordneten Steuereinrichtung, ausgestaltet ist.2. Machine tool according to claim 1, characterized in that the drive is designed as a hydraulic or pneumatic cylinder, in particular with an associated control device. 3. Werkzeugmaschine, insbesondere Handwerkzeugmaschine, mit durch einen Antrieb, insbesondere Motor (20), bewegtem Werkzeug (18), dadurch gekennzeichnet, dass der Antrieb als Servo- oder Schrittmotor ausgestaltet ist, der das Werkzeug (18) einstellbar ungleichförmig beschleunigend antreibt.3. Machine tool, in particular hand-held machine tool, with a tool (18) moved by a drive, in particular a motor (20), characterized in that the drive is designed as a servo or stepper motor which drives the tool (18) in an adjustable, non-uniformly accelerating manner. 4. Werkzeugmaschine nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass das Werkzeug (18) ein Einsatzwerkzeug, z. B. Stichsägeblatt oder Bohrer ist.4. Machine tool according to claim 1, 2 or 3, characterized in that the tool (18) is an insert tool, for. B. jigsaw blade or drill. 5. Werkzeugmaschine nach Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, dass das Getriebe (22) mit Unwuchtzahnrädern bzw. Unwuchtzahnriemen versehen ist.5. Machine tool according to claim 1, 2, 3 or 4, characterized in that the gear (22) is provided with unbalanced gear wheels or unbalanced toothed belts. 6. Werkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Getriebe (22) ein Koppelgetriebe ist.6. Machine tool according to claim 1, characterized in that the gear (22) is a coupling gear. 7. - Werkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Getriebe (22) ein Schrittgetriebe ist.7. - Machine tool according to claim 1, characterized in that the gear (22) is a stepping gear. 8. - Werkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Getriebe (22) ein Kurvengetriebe ist.8. - Machine tool according to claim 1, characterized in that the gear (22) is a cam gear. 9. Werkzeugmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass einer der Motoren (20) nach Anspruch 1 oder 2 ausgestaltet und mit einem der Getriebe nach Anspruch 4 bis 7 gekuppelt ist. 9. Machine tool according to one of the preceding claims, characterized in that one of the motors (20) is configured according to claim 1 or 2 and is coupled to one of the gears according to claims 4 to 7. 0. Werkzeugmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie eine als als Hobel oder Schaber oder Schere oder Kreis- oder Hubsäge, als Fräsmaschine oder Schleifmaschine wie Winkelschleifer oder Schwing- und Exzenterschleifer oder als Bohrmaschine, Bohr- oder Schlaghammer ausgestaltete Handwerkzeugmaschine ist. 0. Machine tool according to one of the preceding claims, characterized in that it is a hand tool designed as a planer or scraper or scissors or circular or reciprocating saw, as a milling machine or grinding machine such as angle grinders or orbital and eccentric grinders or as a drill, hammer drill or hammer ,
PCT/DE2004/002125 2003-11-11 2004-09-24 Hand-held machine tool with a non-uniform movement of said tool Ceased WO2005049267A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04786841A EP1687117A1 (en) 2003-11-11 2004-09-24 Hand-held machine tool with a non-uniform movement of said tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003152500 DE10352500A1 (en) 2003-11-11 2003-11-11 Hand tool
DE10352500.9 2003-11-11

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WO2005049267A1 true WO2005049267A1 (en) 2005-06-02

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PCT/DE2004/002125 Ceased WO2005049267A1 (en) 2003-11-11 2004-09-24 Hand-held machine tool with a non-uniform movement of said tool

Country Status (4)

Country Link
EP (1) EP1687117A1 (en)
CN (1) CN1874871A (en)
DE (1) DE10352500A1 (en)
WO (1) WO2005049267A1 (en)

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WO2010087351A1 (en) * 2009-01-30 2010-08-05 Hitachi Koki Co., Ltd. Reciprocating electric tool
US11311952B2 (en) 2018-01-31 2022-04-26 Milwaukee Electric Tool Corporation Reciprocating saw

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TWI549792B (en) * 2014-10-16 2016-09-21 Gison Machinery Co Ltd Pneumatic machinery
CN106444433B (en) * 2015-08-07 2019-08-20 苏州宝时得电动工具有限公司 Power tool and control method for power tool

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US5161331A (en) * 1990-03-17 1992-11-10 Officine Meccaniche F.Lli Zambon S.N.C Rotating head having oscillating blocks for leveling and polishing surfaces of granite, ceramic or marble
US5549169A (en) * 1993-01-13 1996-08-27 Nippondenso Co., Ltd. Screw tightening apparatus
US5868208A (en) * 1993-12-29 1999-02-09 Peisert; Andreas Power tool
JPH10337639A (en) * 1997-06-03 1998-12-22 Hitachi Seiko Ltd Printed circuit board driller
US6634437B1 (en) * 1998-04-23 2003-10-21 Gary Rudolph Apparatus and method for rotary motion conversion and waste product collection unit

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010087351A1 (en) * 2009-01-30 2010-08-05 Hitachi Koki Co., Ltd. Reciprocating electric tool
JP2010173039A (en) * 2009-01-30 2010-08-12 Hitachi Koki Co Ltd Reciprocating tool
US8922141B2 (en) 2009-01-30 2014-12-30 Hitachi Koki Co., Ltd. Reciprocating electric tool
US11311952B2 (en) 2018-01-31 2022-04-26 Milwaukee Electric Tool Corporation Reciprocating saw

Also Published As

Publication number Publication date
CN1874871A (en) 2006-12-06
EP1687117A1 (en) 2006-08-09
DE10352500A1 (en) 2005-06-09

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