WO2022073681A1 - Dispositif de fixation - Google Patents

Dispositif de fixation Download PDF

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Publication number
WO2022073681A1
WO2022073681A1 PCT/EP2021/073451 EP2021073451W WO2022073681A1 WO 2022073681 A1 WO2022073681 A1 WO 2022073681A1 EP 2021073451 W EP2021073451 W EP 2021073451W WO 2022073681 A1 WO2022073681 A1 WO 2022073681A1
Authority
WO
WIPO (PCT)
Prior art keywords
attachment according
attachment
air passage
workpiece
compressed air
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/EP2021/073451
Other languages
German (de)
English (en)
Inventor
Markus Lohr
Ingo Von Puttkamer
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.)
Guehring KG
Original Assignee
Guehring KG
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 Guehring KG filed Critical Guehring KG
Publication of WO2022073681A1 publication Critical patent/WO2022073681A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/0021—Stands, supports or guiding devices for positioning portable tools or for securing them to the work
    • B25H1/0078—Guiding devices for hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/003—Attachments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2250/00—Compensating adverse effects during turning, boring or drilling
    • B23B2250/16—Damping of vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
    • B23B2270/34—Means for guiding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
    • B23B2270/62—Use of suction

Definitions

  • the present invention relates to an attachment for detachable attachment to a machine tool, in particular a hand-held drill, which accommodates a cutting tool that can be driven in rotation about an axis of rotation for machining a workpiece.
  • EP 2 228 171 B1 shows an attachment with a machine connection device for connection to a hand drill and a coupling unit that couples a suction device to the machine connection device.
  • a spiral spring arranged in the coupling unit ensures that the feed speed of the drill is reduced during the drilling process.
  • the machine connection device is attached to the drill in a rotationally fixed manner.
  • DE 103 08 089 A1 shows an attachment attached to a drill, which has a workpiece placement device with a contact surface for placing on a workpiece, a guide device for parallel guidance of the tool, a suction device for sucking off material chips, dust and dirt from the area of the workpiece placement device and a Has shock absorbers for damping the feed.
  • the attachment is secured to the neck of the drill against twisting and fastened by means of grub screws, which engage in blind holes in the drill, via a fastening piece as a connection body.
  • the attachment can therefore be fixed relative to the drill in different, predetermined angular positions.
  • DE 10 2015 122 581 A1 shows an attachment for a hand drill to limit the feed during a drilling process.
  • the attachment has a drill stand with spacers that come into contact with a workpiece at the beginning of the drilling process, a damping unit in the form of a gas pressure spring, which enables controlled damping of the feed of the drill, a guide for guiding a drilling tool clamped in the drill, and a vacuum-loaded extraction system for extracting drilling debris, chips and exhaust air from the machining point.
  • the attachment is releasably attached to the neck of the drill by means of an adjustment mount with a clamp connection.
  • the overall system is designed in such a way that the attachment device can be rotated by 100° in positive and negative directions relative to the axis of the bore when the clamp connection is released.
  • the attachments specified in DE 103 08 089 A1 and DE 10 2015 122 581 A1 have in common that they have a clamping part that is detachably attached to the neck of the drill and a holder part that extends away from the clamping part parallel to the axis of rotation and is an aid that supports the machining in the form of a support element on the workpiece, optionally with feed damping, and/or a suction device for suction of chips or dust occurring during machining.
  • the fastening of the clamping part on the neck of the drill is in each case designed in such a way that the attachment can only assume certain angular positions relative to the drill. With regard to more flexible handling of the attachment for drilling, in particular when space is limited, there is still room for improvement.
  • the object of the invention is therefore to provide an attachment for detachable attachment to the neck of a machine tool, which allows a user more flexible handling for machining.
  • An attachment according to the invention for detachable attachment to a usually round, ideally circular, neck of a machine tool, which accommodates a cutting tool that can be driven in rotation about an axis of rotation for machining a workpiece comprises a clamping ring that protrudes radially from the neck of the machine tool relative to the axis of rotation and a Clamping ring away parallel to the axis of rotation protruding holder part, which carries a tool supporting the machining.
  • the attachment is constructed according to the invention so that thanks to the clamping ring within An angular range of 360° around the axis of rotation can be fastened in any angular position on the neck of the machine tool.
  • the machine tool can in particular be a hand-held machine tool, e.g. a drill.
  • the clamping ring that encompasses or encloses the neck of the machine tool can be formed from a one-piece, slotted ring body, the ends of which adjoining the slot can be clamped towards one another by a clamping screw.
  • the clamping ring and the holder part are preferably made in one piece.
  • the clamping ring can also be designed in two parts from two half-ring bodies, with the ends adjoining the two slots being able to be clamped towards one another by a clamping screw.
  • one of the two half-ring bodies of the clamping ring and the holder part are preferably made in one piece.
  • the clamping screw(s) can be driven, for example, by a lever-operated quick-release clamp with which the attachment can be fastened to the neck of the machine tool quickly and by hand without tools.
  • the clamping is released, the clamping ring and thus the attachment can be turned around the entire circumference of the neck into an angular position suitable for the intended processing, in which the attachment can finally be fixed to the neck of the Machine tool can be fixed.
  • the holder portion projects away from the collet parallel to the axis of rotation of the tool.
  • the holder part extends axially away from the clamping ring in only one direction, ie in the direction of a machining point of the cutting tool or away from the machine tool.
  • the clamping ring and the holder part are therefore essentially L-shaped together. This essentially L-shaped design prevents the attachment device from colliding with, for example, a housing part, handle or switch of the machine tool that is attached to the neck, which means that the attachment device can be attached without restriction in any angular position around the neck of the machine tool.
  • the holder part extends axially away from the clamping ring exclusively in one direction away from the machine tool, a more compact and slimmer design can also be achieved overall. Furthermore, the holder part in the axially opposite Direction do not hinder a user of the machine tool in a cutting process.
  • the tool supporting the machining can be, for example, a support part, described later, for contacting or supporting the workpiece or a template attached to the workpiece, or a suction device, described later, for sucking off chips and/or dust produced during machining.
  • the clamping ring can be fastened in any angular position on the neck of the machine tool within an angular range of 360° around the axis of rotation.
  • fastening the clamping ring within an angular range of 360° around the axis of rotation more flexible handling can be achieved during machining even in confined spaces.
  • the user of the machine tool can therefore individually adapt the attachment of the attachment to the neck of the machine tool, i.e. the angular position of the attachment in relation to the machine tool, to the prevailing machining conditions.
  • the aid can be formed from a support part for contact or support on a workpiece to be machined or on a template attached to the workpiece, the support part being held on the holder part in an axially displaceable manner.
  • a consistently high drilling quality can be achieved by the support on the workpiece by the support part.
  • the support part can have a bayonet catch or other locking mechanism with a snug fit in order to attach or lock the attachment to the template. The use of a template ensures further improved drilling quality and reproducible drilling results.
  • the support part can have a tool bushing which is coaxial to the axis of rotation and which is arranged on a carrier which protrudes radially from the holder part relative to the axis of rotation (in the direction of the axis of rotation of the machine tool).
  • the tool bushing has a through hole through which the cutting tool clamped in the machine tool is guided with a defined radial play.
  • the overall processing quality can be further improved by a tool passage.
  • the holder portion may include a feed damper disposed between the clamp ring and the support portion.
  • the feed damper allows a controlled damping of the feed of the cutting tool.
  • the feed damper can be formed from a helical spring which, in addition to damping the feed, restores the support part to its initial position after the machining process.
  • the feed damper can be designed in such a way that it achieves feed rate-dependent damping.
  • the feed rate can suddenly increase at a point in time when the drill tip penetrates the workpiece, i.e. when the drill no longer experiences any resistance from the workpiece. This is especially true for hand held drills where the user cannot manually adjust the feed rate quickly enough after breaking through the work piece as described above.
  • fluctuations in the feed rate should be kept as low as possible, particularly when drilling fiber composite materials, in order to achieve constant cutting forces and thus high drilling quality without fiber fraying.
  • the feed damper can therefore be designed in such a way that the higher the feed speed of the drilling tool, the higher the damping. As a result, the feed rate that increases when the workpiece breaks through can be dampened to such an extent that fiber fraying is prevented and the hole quality can be maintained at a high level.
  • the feed damper can have a fluid-filled cylinder which is attached to the holder part, a piston which has a piston head which is guided in the cylinder so that it can be displaced with a defined lateral play, and a piston rod which is connected to the piston head and which is connected to the support part, the piston head being divides the cylinder into a first section and a second section and has a plurality of fluid passages which connect the first section and the second section, and a shape- and/or position-variable relative to the piston head
  • ches closing element which is exposed to the fluid pressure and when a defined feed limit speed of the piston is exceeded, the fluid passages closes.
  • a defined feed limit speed e.g. when a workpiece breaks through when drilling a through hole, the fluid passages formed in the piston head are closed by the closing element, so that the first section and the second section are no longer connected by the fluid passages.
  • the piston rod connected to the support part is dampened as the tool advances, since the fluid can no longer escape through the fluid passages from the first section to the second section, but only through a gap formed around the piston head, which ensures the defined lateral play.
  • the closing element can cover the fluid passages in the manner of an umbrella. Furthermore, the closing element can be an elastically deformable element, preferably a rubber cap.
  • the aid can be formed from a suction device for sucking off chips and/or dust occurring during machining or can include such a suction device.
  • the suction device can have a venturi nozzle with a suction opening and a blow-out opening and a cone to which compressed air is applied towards the blow-out opening.
  • the cone can widen the cross-sectional area of the Venturi nozzle towards the exhaust opening and have an opening angle of between 55° and 65°, preferably 60°.
  • the suction device can have a housing which has an air passage with an inlet and an outlet and a compressed air hole opening into the air passage between the inlet and outlet for supplying compressed air, and the venturi nozzle can be arranged in the air passage between the inlet and outlet be.
  • the housing can be attached to the support part or carrier, for example by means of a screw connection, or can be designed in one piece with the support part or carrier.
  • the Venturi nozzle can form an annular compressed air chamber with the housing, into which the compressed air hole opens, have a central passage surrounded by the compressed air chamber, which adjoins the suction opening and is connected to the exhaust opening via the cone, with a large number of connecting holes in the cone can be formed, which connect the compressed air chamber with the exhaust port.
  • the venturi nozzle can abut towards the suction opening against an air passage constriction which divides the air passage into a first air passage section with the inlet and a second air passage section with the outlet, wherein the venturi nozzle can be arranged in the second air passage section and with the air passage constriction the annular compressed air chamber limited.
  • the air passage constriction may be formed in the manner of a step against which the Venturi nozzle arranged in the second air passage section abuts and delimits the annular compressed air chamber.
  • the annular compressed air chamber can therefore be formed in an extremely simple manner by the Venturi nozzle of the side of the outlet is inserted into the second air passage portion and abutted with the air passage restriction.
  • connection holes may be equiangularly spaced around a cone axis.
  • the inside diameter of the passage can correspond to the smallest inside diameter of the air passage constriction.
  • the attachment can additionally have a contact element provided on the support part for contact with a workpiece to be machined or with a template attached to a workpiece. Due to the additional exchangeable contact element, which can be designed as a socket, the attachment can be individually adapted to a processing situation. If the attachment is used on a hand-held machine tool, a contact element can be selected which has, for example, a (vacuum) suction ring on its contact surface in contact with the workpiece for secure attachment to the workpiece. If the attachment is used on a machine tool that is to be fixed to a template fixed to a workpiece, the contact element can have a bayonet catch or other fastening mechanism with a snug fit, with which the contact element can be fixed or anchored to the template.
  • a contact element provided on the support part for contact with a workpiece to be machined or with a template attached to a workpiece. Due to the additional exchangeable contact element, which can be designed as a socket, the attachment can be individually adapted to a processing situation. If
  • the contact element can be fastened to the support part by means of a clamping ring. This attachment represents a quickly detachable mechanical connection between the support part and the contact element.
  • the contact element can have a plurality of contact points for contact with the workpiece to be machined, which protrude from the contact element and can be pressed into the contact element.
  • the contact element preferably has three contact points and forms a so-called tripod.
  • the abutment points may be formed as plungers which function as normally open type switches of an electrical circuit.
  • a switching point of the circuit can be set in such a way that the circuit is closed as soon as the plungers protruding from the contact element are fully pressed into the contact element when they are in contact with a workpiece and are flush with the contact surface of the contact element.
  • Spring-loaded mounting of the rams can ensure that the rams have to be actively pressed in and the circuit opens again as soon as there is no longer any contact between the rams and the workpiece.
  • the contact element can have a light-emitting diode (LED) which, when the circuit is closed, visually indicates to the user that the plungers are fully pressed in.
  • LED light-emitting diode
  • the attachment can additionally have a suction line from the inlet to the support part. If the support part has a contact element as described above, the suction line can lead to the contact element, preferably to the point on the contact element where chips and/or dust are produced. The chips and/or dust produced during the machining can thus be sucked off into the suction device directly from the point at which the machining tool machines the workpiece material.
  • FIG. 1 is a perspective view of an attachment according to the invention attached to a hand-held drill
  • FIG. 2 shows another perspective view of the attachment according to the invention without a drill
  • FIG. 6 is a perspective sectional view of a feed damper
  • FIG. 7 shows a side view of a piston with an elastic closing element
  • FIG. 8 shows a front view of the piston with closing element of FIG. 7
  • FIG. 9a shows a schematic side sectional view of the feed damper from FIG. 6 in an undamped state
  • FIG. 9b shows a schematic sectional side view of the feed damper from FIG. 6 in a damped state
  • Fig. 10 is a graph showing the feed rate of a cushioned piston and an undamped piston
  • FIG. 11 is a perspective sectional view of a nozzle body inserted in a housing
  • FIG. 12 shows a side sectional view of the nozzle body from FIG. 11 used in the housing
  • FIG. 13 is a front view of the nozzle body of FIG. 11;
  • Fig. 14 is a sectional view taken along line A-A of Fig. 13;
  • FIG. 15 is a perspective view of the nozzle body of FIG. 11;
  • FIG. 16 is a side view of the housing of FIG. 11;
  • FIG. 17 is a bottom view of the housing of FIG. 11;
  • Fig. 18 is a sectional view taken along line B-B of Fig. 17;
  • FIG. 19 is a front view of the housing of FIG. 11.
  • FIG. 19 is a front view of the housing of FIG. 11.
  • FIGS. 1 to 5 show various perspective views of an attachment 1 according to the invention in a preferred embodiment, which is detachably attached to a round cross-section neck of a hand-held drill.
  • the drilling machine clamps a rotationally drivable drill for machining a workpiece in a drill chuck.
  • the attachment 1 comprises, as a fastening part, a clamping ring 5 which projects radially from the neck of the drill relative to the axis of rotation 3 and which is fastened to the neck of the drill by means of a quick-action clamp. With the help of the quick release, the attachment 1 can be fastened by hand to the neck of the drill quickly and without tools.
  • the clamping ring 5 can be fastened within an angular range of 360° around the axis of rotation 3 in any angular position on the neck of the drill.
  • the user of the drill can therefore individually adapt the attachment of the attachment 1 to the neck of the drill, ie the angular position of the attachment 1 relative to the drill, to the prevailing machining conditions.
  • a holder part 7 projects away from the clamping ring 5 parallel to the axis of rotation 3 of the tool in the direction of the drill bit.
  • the holder part 7 extends axially away from the clamping ring 5 in only one direction, i.e. towards the machining point of the drill.
  • the clamping ring 5 and the holder part 7 together are therefore essentially L-shaped, as shown in FIG. 1 . Since the holder part 7 extends axially away from the clamping ring 5 in only one direction, a more compact and slimmer design can be achieved overall. Furthermore, the holder part 7 cannot impede a user of the drill during a drilling operation in the axially opposite direction. 1 to 5 also show that the clamping ring and the holder part are designed in one piece.
  • the attachment 1 has a support part 9 for support on a workpiece to be machined or on a template attached to the workpiece, which is held on the holder part 7 in an axially displaceable manner.
  • the support part 9 comprises a tool bushing 11 which is coaxial to the axis of rotation 3 and which is arranged on a carrier 13 which projects radially from the holder part 7 relative to the axis of rotation 3 .
  • the tool bushing 11 has a through hole through which the drill bit clamped in the drill is guided with a certain radial play.
  • the attachment 1 has a contact element 80 which is provided on the support part 9 and which can be brought into contact with the workpiece to be machined and is designed as a socket.
  • the contact element 80 is fastened to the tool bushing 11 by means of a clamping ring, similar to the clamping ring 5 .
  • the force is introduced via cylinder head screws (not shown) instead of using a quick release.
  • the clamp sets represents a quickly detachable mechanical connection between the support part 9 and the contact element 80. If a workpiece is to be processed with a template attached to the workpiece, the contact element 80 can be exchanged quickly and easily. In this case, a bayonet lock or some other locking mechanism with a snug fit can be provided on the contact element 80 in order to support the attachment 1 on the template or to lock it to the template.
  • the contact element 80 has three contact points 82 for contact with the workpiece to be machined and forms a so-called tripod.
  • the abutment points 82 are designed as plungers that act as switches of the normally open type of an electrical circuit.
  • the switching point of the circuit is set in such a way that the circuit is closed as soon as the plungers protruding from the contact element 80 are fully pressed into the contact element 80 when they are in contact with the workpiece and are flush with the contact surface of the contact element 80 .
  • Spring-loaded mounting of the rams ensures that the rams have to be actively pressed in and the circuit opens again as soon as there is no longer any contact between the rams and the workpiece.
  • the contact element has a light-emitting diode (LED) 81 which, when the circuit is closed, visually indicates to the user that the plungers are fully depressed.
  • LED light-emitting diode
  • the holder part 7 has a feed damper 20 which is arranged between the clamping ring 5 and the support part 9 and is outlined in FIGS. 6 to 9b.
  • the feed damper 20 allows a controlled damping of the feed of the drill.
  • the feed damper 20 has a fluid-filled cylinder 22, which is fastened to the holder part 7, and a piston 24, which has a piston head 26, which is guided displaceably in the cylinder 22 with a defined lateral play, and a piston rod 28, which is connected to the piston head 26 is connected to the support part 9.
  • the piston head 26 divides the cylinder 22 into a first section 30 and a second section 32 and has a plurality of fluid passages 34 connecting the first section 30 and the second section 32 associate.
  • a closing element 36 that is variable in shape relative to the piston head 26 and covers the fluid passages 34 in the manner of an umbrella is fastened to the piston rod 28 .
  • the closing element 36 is an elastically deformable element, in particular a rubber cap. When a defined feed limit speed of the piston 24 is exceeded, the fluid passages 34 are closed by the closing element 36 .
  • the feed damper 20 also has a restoring spring 25 shown in FIG. 6 for restoring the piston 24 .
  • the feed damper 20 is designed in such a way that it achieves feed rate-dependent damping.
  • the feed speed of the piston 24 is below a defined feed limit speed.
  • the fluid in the cylinder 22 can flow through the fluid passages 34 from the first section 30 into the second section 32 because the feed rate of the piston 24 is not high enough that the fluid passages 34 from the elastic Closing element 36 are closed.
  • Fig. 10 is a graph showing the feed rate V of a cushioned piston and an undamped piston when breaking through a workpiece when drilling a through hole.
  • the upper curve in FIG. 10 represents the velocity profile of the undamped piston and the lower curve represents the velocity profile of the damped piston 24 according to the preferred embodiment.
  • the piston moves up to a breakthrough position XD in both cases at the feed rate VD. It can be seen that in the further course, the feed rate in the undamped case increases very sharply up to a feed position X2 up to a maximum feed rate V2.
  • the closing of the fluid passages 34 by the elastic closing element 36 ensures that the feed rate increases only moderately up to a feed rate V1 at the feed position xi, with V1 being significantly smaller than V2.
  • V1 being significantly smaller than V2.
  • the attachment 1 also has a suction device 40, shown only schematically in FIGS. 11 and 12, for suction of chips and/or dust occurring during the drilling process.
  • the suction device 40 is provided—preferably, but not necessarily in one piece—on the carrier 13 and has a Venturi nozzle 42, shown in FIGS 48 on.
  • the cone 48 widens the cross-sectional area of the Venturi nozzle 42 towards the exhaust opening 46 and has an opening angle b of 60° in the preferred embodiment.
  • the suction device 40 comprises a housing 50 shown in FIGS. 16 to 19, which has an air passage 52 with an inlet 54 and an outlet 56 and a compressed air hole 58 opening into the air passage 52 between the inlet 54 and outlet 56 for the supply of compressed air.
  • Venturi nozzle 42 is positioned in air passage 52 between inlet 54 and outlet 56 .
  • the housing 50 is formed in one piece with the carrier 13, only the venturi nozzle 42 being visible in FIG. 1 for reasons of illustration. 16 to 19, on the other hand, show a housing provided with screw holes for screw attachment to the carrier 13.
  • the Venturi nozzle 42 forms an annular compressed air chamber 60 with the housing 50, into which the compressed air hole 58 opens and has a central passage 62 surrounded by the compressed air chamber 60, which connects to the suction opening 44 connects and is connected via the cone 48 with the exhaust port 46.
  • a plurality of connecting holes 64 are formed in the cone 48 and connect the compressed air chamber 60 to the blow-out opening 46 . As shown in FIG. 13, the connecting holes 64 are equiangularly spaced about a cone axis. In the preferred embodiment, the pitch angle ⁇ is 30°.
  • the venturi 42 abuts toward the suction opening 44 at an air passage restriction 66 dividing the air passage 52 into a first air passage portion 68 having the inlet 54 and a second air passage portion 70 having the outlet 56 .
  • the Venturi nozzle 42 is arranged in the second air passage section 70 and delimits the annular compressed air chamber 60 with the air passage constriction 66.
  • the air passage restriction 66 is formed as a step against which the venturi nozzle 42 arranged in the second air passage portion 70 abuts and which defines the annular compressed air chamber 60 . Therefore, the annular compressed air chamber 60 can be formed extremely easily by inserting the venturi nozzle 42 into the second air passage portion 70 from the outlet side and abutting with the air passage restriction 66 .
  • the inner diameter of the passage corresponds to the smallest inner diameter of the air passage constriction 66.
  • the attachment 1 also has a suction line 84 from the inlet 54 of the housing 50 to the contact element 80 .
  • the suction line 84 therefore leads to the point at which the chips and/or dust are produced during the drilling process. The chips and/or dust can thus be sucked off into the suction device 40 directly from the point at which the drill bit clamped in the drilling machine is machining the workpiece material.
  • Air passage constriction first air passage section second air passage section
  • LED light emitting diode

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

Abstract

La présente invention concerne un dispositif de fixation (1) qu'il est possible de fixer de manière amovible sur une machine-outil et qui maintient un outil de coupe pouvant être entraîné en rotation autour d'un axe de rotation (3) de manière à usiner une pièce par découpe. Le dispositif de fixation comprend une bague de serrage (5) qui fait saillie radialement par rapport à l'axe de rotation (3) et qui peut être fixée au col de la machine-outil et une partie de support (7) qui fait saillie par rapport à la bague de serrage (5) parallèlement à l'axe de rotation (3) et qui supporte un ou plusieurs moyens d'aide à la découpe. La bague de serrage (5) peut être fixée au col de la machine-outil dans n'importe quelle position angulaire d'une plage angulaire de 360° autour de l'axe de rotation.
PCT/EP2021/073451 2020-10-07 2021-08-25 Dispositif de fixation Ceased WO2022073681A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020212660.7A DE102020212660A1 (de) 2020-10-07 2020-10-07 Vorsatzgerät
DE102020212660.7 2020-10-07

Publications (1)

Publication Number Publication Date
WO2022073681A1 true WO2022073681A1 (fr) 2022-04-14

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PCT/EP2021/073451 Ceased WO2022073681A1 (fr) 2020-10-07 2021-08-25 Dispositif de fixation

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DE (1) DE102020212660A1 (fr)
WO (1) WO2022073681A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117102545A (zh) * 2022-11-22 2023-11-24 浙江子逸车业有限公司 一种自行车铁圈的生产工艺及其装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024101338A1 (de) * 2024-01-17 2025-07-17 Festool Gmbh Handgehaltenes Elektrowerkzeug und Verfahren zum Betreiben eines handgehaltenen Elektrowerkzeugs
DE102024114134A1 (de) * 2024-02-09 2025-08-14 Festool Gmbh Staubabfuhrvorrichtung für eine Schleifmaschine

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