EP3487663B1 - Unité de traitement de surface munie d'un raccord d'aspiration - Google Patents

Unité de traitement de surface munie d'un raccord d'aspiration Download PDF

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Publication number
EP3487663B1
EP3487663B1 EP17742744.0A EP17742744A EP3487663B1 EP 3487663 B1 EP3487663 B1 EP 3487663B1 EP 17742744 A EP17742744 A EP 17742744A EP 3487663 B1 EP3487663 B1 EP 3487663B1
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EP
European Patent Office
Prior art keywords
section
machining
suction
flow
processing
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Application number
EP17742744.0A
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German (de)
English (en)
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EP3487663A1 (fr
Inventor
Frank SIEBERT
Guido PÖRTNER
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Festool GmbH
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Tts Microcell GmbH
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Publication of EP3487663A1 publication Critical patent/EP3487663A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/04—Hand tools or other devices for non-rotary grinding, polishing, or stropping resilient; with resiliently-mounted operative surface

Definitions

  • the invention relates to a surface processing device, in particular a manual grinding device, with a processing body that has at least one processing surface for grinding or polishing processing of a workpiece surface, wherein at least one processing surface has inflow openings for extracting dust-laden dust air, which are arranged above a duct arrangement with a suction connection are connected to the flow, to which a suction device can be connected.
  • Such a surface processing device is for example in DE 27 32 338 A1 explained. Dust air can be extracted from the at least one processing surface via the suction connection.
  • the well-known processing device is also suitable for wet applications. However, dust extraction is not optimal in all applications.
  • a surface processing device of the type mentioned at the outset that it has an adjusting device for adjusting effective flow cross sections, with which inflow openings of a first processing surface section of the at least one processing surface and inflow openings of at least a second processing surface section of the at least one processing surface with the suction connection are connected to the flow, so that a suction effect on the first processing area and the at least one second processing surface section is adjustable and / or can be switched off.
  • the inflow of extraneous air to a machining surface that is not required or that is currently not in engagement or in contact with the workpiece can be prevented or limited.
  • the suction power in the active processing area is therefore higher.
  • an air flow that may be uncomfortable during workpiece machining and would flow over a machining surface that is not in engagement with the workpiece is prevented or reduced.
  • the two first and at least one second machining surface sections can also have mutually angular or curved processing surface sections or processing surface sections.
  • a first processing area section of the at least one processing area and at least one second processing area section of the at least one processing area can therefore be understood to mean a range of processing areas.
  • first and the at least one second machining surface section are arranged on mutually angular sides of an outer circumference of the machining body.
  • Machining surfaces or parts of machining surfaces that are angled with respect to one another also expediently include or are machining surfaces in which, for example, one machining surface is a plane surface, the other machining surface runs in an arc away from the flat machining surface.
  • first and the at least one second processing surface section be arranged on opposite sides of the processing body.
  • processing areas or processing area sections can be present, for example three or four machining surfaces or machining surface parts that are angled to one another. Furthermore, mutually angular machining surfaces or machining surface parts can also be provided on opposite sides of the machining body.
  • the suction power is variably adjustable using the setting device, so that, for example, the suction flow that flows over the first processing area section to the suction connection is smaller or larger than that that flows over the at least one second processing area section to the suction connection.
  • the setting device is designed to reduce the effective flow cross-section between the suction connection and the first processing surface section in favor of increasing the effective flow cross-section between the suction connection and the at least one second processing surface section.
  • an expedient embodiment provides that the setting device is designed to switch a flow connection between the suction connection and the inflow openings of the first processing area section and the inflow openings of the at least one second processing area section, so that either the inflow openings of the first processing area section or the inflow openings of the at least one second processing area section are included are connected to the suction connection.
  • the suction flow can be switched off in one processing area while it flows over or through the other processing area.
  • a plurality of processing surfaces in particular processing surfaces provided on mutually opposite or angled sides of the processing body, are provided, it is possible, for example, to extract one processing surface while the other processing surfaces are, so to speak, switched off with regard to the suction flow. No suction flow then flows to the suction connection via their inflow openings.
  • Combinations are also possible, i.e. that the flow connection between the inflow openings of a first processing surface section and the suction connection is switched off or prevented by means of the adjusting device, while in a second processing surface section there is a full suction flow or an unobstructed flow connection between their inflow openings and the suction connection and finally at the inflow openings of a third processing surface section compared to the inflow openings of the second processing surface section, a smaller suction flow flows.
  • the suction power is therefore maximal in the second processing area, reduced in the third processing area and not available in the first processing area.
  • This application example is also readily possible with other, for example more than three, machining surfaces.
  • the processing device has latching means and / or a locking device for latching or locking the setting device in at least one setting position and / or in all setting positions in which the suction connection is flow-connected to only one of the processing surfaces.
  • the suction power can thus be switched digitally, for example, between the processing areas or processing area sections.
  • the flow connection to the suction connection is only ever available on a processing area or processing area.
  • locking or locking or a combination thereof is also possible in further setting positions, for example as in the above exemplary embodiment, in which, for example, not only a suction stream can flow over the inflow openings of one processing surface, but also at least partially or to a lesser extent over the inflow openings of another Processing area.
  • clamping means or similar other fixing means can also be provided for fixing the setting device in at least one setting position.
  • the adjusting device has a manually actuatable adjusting element, in particular an adjusting ring or an adjusting sleeve, for adjusting the effective flow cross sections.
  • the setting device can thus be operated manually.
  • an electric or other motorized drive variant would also be readily conceivable, in which, for example, an actuator, in particular an electromagnet, a stepping motor or the like, actuates the setting device.
  • the adjusting element is motion-coupled or firmly connected to a mask body or has a mask body, the mask body being arranged between the inflow openings of the processing surface parts and the suction connection and having a passage section having at least one passage opening and at least one reducing section which has one Has closure surface for closing a flow connection between the inflow openings of at least one processing surface section and the suction connection or is air-permeable with a smaller effective flow cross-section than the passage section.
  • the mask body is mounted so as to be movable, in particular rotatable, with respect to the processing body by means of a bearing, in particular a rotary bearing.
  • a sliding bearing or a combination of sliding bearing and rotating bearing would also be possible without further notice.
  • the at least one reducing section can therefore be completely closed, ie prevent a flow connection between the processing area part or processing area, to which it is assigned in a respective setting position of the setting device, and the suction connection. It is also possible for the at least one reducing section to reduce a flow connection between the processing area part or processing area to which it is currently assigned according to the respective setting position of the setting device.
  • the flow cross-section of the reducing section that can be flowed through by the suction flow is smaller than a flow cross-section of the passage section that can be flowed through by the suction flow.
  • the mask body can also be referred to as a valve body or can be a valve body.
  • the mask body is only permeable to flow at the passage section.
  • the mask body or valve body is closed apart from the passage section. This is advantageous, for example, in the case of a digital switchover such that only a first processing surface is extracted.
  • the mask body forms part of a mask arrangement, the masks of which can be adjusted, in particular rotated, relative to one another in order to adjust an effective flow cross section for the dust air between the inflow openings of a respective processing surface and the suction connection.
  • mask bodies or valve bodies can be provided which are designed like disks and are rotatably and / or displaceably mounted relative to one another.
  • drum-like or sleeve-like mask bodies or valve bodies which are, for example, displaceable or rotatable relative to one another or both, would also be possible.
  • the relative adjustment of the mask body or valve body makes it possible for through-openings or through-flow openings of the two mask bodies or valve bodies to be adjustable to different relative positions in which they are aligned with one another and then provide a maximum flow cross-section or can be adjusted or adjusted relative to one another such that, for example a closed surface or wall surface of one mask body or valve body completely or at least partially covers a passage opening of the other mask body or valve body, so that the flow cross section of this covered passage opening is closed or reduced.
  • At least one suction channel extends along a longitudinal axis of the processing body, the suction channel with the suction connection and with the inflow openings of at least one of the first processing surface section or the at least one second processing surface section is fluidly connected on the basis of transverse channels or a flow-permeable structure.
  • the air flow can flow from the inflow openings to the suction connection via the elongated suction channel, so to speak.
  • One or more such suction channels can be provided. It goes without saying that all suction channels can extend over the entire longitudinal length of a processing body. However, it is also possible for one or more suction channels to extend only over part of a longitudinal length of the processing body.
  • a length of a suction channel is preferably configured such that it extends from the processing surface section to be suctioned off essentially to the suction connection.
  • a suction channel can, for example, also serve as a valve body or valve seat, in particular in the embodiment which is explained below
  • the at least one suction channel has e.g. Passage openings, which are flow-connected to the inflow openings of the processing surface parts.
  • the suction channel has a porous structure or is at least partially air-permeable in some other way, so that air flowing in through the inflow openings can flow into the suction channel.
  • the at least one suction channel in particular a tubular and / or rod-shaped air guide body, for example in the manner of a mask body or valve body, as described above, is rotatably mounted about an axis of rotation extending along the longitudinal axis and / or is displaceable along a sliding axis .
  • the air guide body advantageously has at least one through-flow opening on its outer circumference, which is flow-connected to a flow channel that extends along the longitudinal axis and is flow-connected to the suction connection, so that by adjusting the air guide body in the suction channel, the at least one through-flow opening of the air guide body relative to the inflow openings and / or to at least one communicating with the inflow openings of at least one processing surface section Through opening of the suction channel to change the effective flow cross section of the inflow openings with respect to the suction port is adjustable.
  • the at least one suction channel is, for example, a mask body or valve body which is stationary with respect to the processing body and relative to which the movable mask body or valve body is movably mounted in the form of the air guide body.
  • both mask bodies or valve bodies are tubular or sleeve-shaped.
  • the suction channel comprises a suction channel body in which the air guide body is rotatably and / or displaceably mounted.
  • the air guide body in particular the mask body or valve body, advantageously has at least one or the at least one throughflow opening on a first angular segment region or longitudinal region of its outer circumference, in particular a row arrangement of throughflow openings arranged alongside one another along the longitudinal axis, and no throughflow openings or throughflow openings on at least one second angular segment region or longitudinal region with a smaller flow cross-section than at the first angular segment area, the through-flow openings being in flow connection with the flow channel, which extends along the longitudinal axis and in flow connection with the suction connection.
  • the first angle segment area or the at least one second angle segment area or the first longitudinal area and the first longitudinal area are in flow connection with the inflow openings of the first processing area section or the at least one second processing area section can be brought to adjust the effective flow cross section between the suction connection and the respective processing surface.
  • a configuration is possible in which the air guide body is mounted in a longitudinally displaceable manner in the exhaust duct, whereby through a longitudinal displacement or relative adjustment of the air guide body in the exhaust duct, throughflow openings of the air guide body that communicate with its flow duct, with throughflow openings of the exhaust duct that communicate with the inflow openings of a respective processing surface or processing surface section are connected to the flow, can be placed in alignment so that the suction air can flow through the inflow openings of the processing surface or processing surface section and the throughflow openings of the suction channel into the flow channel of the air guide body.
  • the throughflow openings of the air guide body can also be adjusted away from the throughflow openings of the suction channel, so that the throughflow openings of the suction channel are at least partially covered and therefore no suction air can flow into the flow channel of the air guide body through the inflow openings of the assigned processing surface or processing surface section.
  • the air guide body has sealing contours extending in the longitudinal direction and delimiting at least one angular segment area, in particular sealing projections or sealing ribs, which bear against an inner circumference of the suction channel.
  • a longitudinal region can also be separated from another longitudinal region by at least one sealing contour, the sealing contour then extending in the circumferential direction.
  • a tubular or sleeve-shaped air guide body with ribs or sealing contours protruding radially outward can be provided rotatably in a suction channel.
  • the ribs or sealing contours do not have to lie flat or sealingly against the inner circumference of the suction channel, but can also be provided with a certain amount of play, so that the air guide body can be rotated or moved more easily.
  • a suction channel is advantageously provided for each processing surface, which extends along the longitudinal axis of the processing body and is flow-connected to the inflow openings of the respective processing surface.
  • several suction channels can be arranged in the machining body as bores, channel bodies or the like.
  • an individual flow body for example tubular bodies, to divide angle segments or cross-sectional segments, in each of which a suction channel is formed.
  • partition walls or partitions can be provided which separate the suction channels from one another.
  • the mask body or valve body is expediently arranged between the suction connection and the suction channels.
  • the mask body is advantageously movably, in particular rotatably and / or displaceably, mounted for positioning the passage section and the at least one reducing section between a respective suction channel and the suction connection on the basis of the bearing.
  • the mask or the valve body prefferably be arranged between the suction connection and the individual suction channels, for example on the front side of the suction channels, and to be mounted so as to be relatively adjustable, for example rotatably mounted and / or slidably mounted, about a respective suction channel to close, so to speak, or to release its flow cross-section.
  • relatively adjustable for example rotatably mounted and / or slidably mounted, about a respective suction channel to close, so to speak, or to release its flow cross-section.
  • a respective suction channel is only partially closed, so that its flow cross section towards the suction connection is reduced.
  • connection element of the suction connection for connecting a suction hose is rotatably mounted to the processing body, wherein the processing body and the suction hose can advantageously be rotated relative to one another without adjustment of the adjusting device.
  • connection element is expediently sleeve-shaped or comprises a sleeve.
  • a rotational decoupling of the suction hose relative to the processing body is possible, which among other things facilitates handling.
  • an unintentional adjustment of the adjusting device, possibly caused by the suction hose, can easily be avoided by means of a rotational decoupling.
  • an inlet channel arrangement which is open to the side of the machining surface and is flow-connected to the suction connection by means of at least one of the inflow openings or the inflow openings is arranged on the at least one machining surface or part of the machining surface.
  • a labyrinth is provided or a tree-like structure of inlet channels or an inlet channel arrangement is provided.
  • the inlet duct arrangement advantageously comprises at least two, preferably a plurality of branched inlet ducts, which are at least partially open, so that suction air can reach an inflow opening via the inlet ducts.
  • machining body has a flat surface section with a flat machining surface for machining flat workpiece surfaces and at least one curve portion with a curved machining surface for machining curved workpiece surfaces having.
  • the plane surface section and the curvature section each advantageously have at least one processing surface section or form a processing surface section.
  • the plane surface section provides the first processing surface or processing surface section, so to speak, the at least one second and preferably third processing surface of the processing surface section being or being provided on the curve section or the curve sections.
  • suction or processing surface for example, suction on the flat surface section or on the curve section or a section of the respective flat surface section or curve section.
  • the curve portion preferably has the shape of a spiral or partial spiral.
  • the curve part expediently has the course of a so-called Fibonacci spiral.
  • the section of curvature can also have the course of a logarithmic spiral, in particular the course of a so-called golden spiral.
  • the curvature section adjoins transverse end regions of the plane surface section and extends over a side of the machining body opposite the plane surface section, the curvature section having a plurality of continuously merging sections of curvature with mutually different radii of curvature and not protruding in front of the planar processing surface of the plane surface section.
  • the curvature section and the flat surface section adjoin one another at an angle at at least one transition region.
  • the angled transition region can, for example, provide an edge with which the workpiece surface can be processed.
  • the angular transition area can also be an area, so to speak, inactive or not intended for machining the workpiece surface, for example an area on which respective end areas or edges of an abrasive are arranged. Particularly advantageous it is when the angle is in a range of, for example, 90-45 °.
  • the angular transition region can also be designed at an acute angle of, for example, 45-25 °.
  • a large number of radii of curvature is expediently provided.
  • the largest radius of curvature of the section of curvature is, for example, at least twice, preferably three times, in particular four times as large as the smallest radius of curvature of the section of curvature.
  • a curvature section of the curvature section has a larger radius of curvature at the at least one angular transition region than at least one further curvature section of the curvature section. It is particularly preferred, for example, if a largest or the largest radius of curvature of the part of the curve is provided on the at least one angular transition region.
  • an angular transition region can be provided in each case at opposite end regions or transition regions from the plane surface part into the curve part.
  • an asymmetrical configuration is also possible, for example in connection with the following configuration.
  • curvature section merges tangentially into the plane surface section at exactly one or at least one transition area.
  • the curvature section at one or more transition areas thus merges into the plane surface section tangentially or continuously, so to speak.
  • a rounding or curvature of the area of curvature begins directly from the flat surface area.
  • a radius of curvature of a section of curvature tangentially transitioning into the plane surface part is smaller than at least one further radius of curvature of a section of curvature of the section of curvature, preferably all other radii of curvature of the other sections of curvature of the section of curvature. So it is in the tangential transition area a particularly small radius of curvature or the smallest radius of curvature of the portion of curvature is provided between the plane surface portion and the portion of curvature.
  • a respective transition area between the curvature section and the plane surface section is expediently provided on a longitudinal side area of the processing body.
  • the curved part does not protrude frontally or in the normal direction in front of the flat surface of the flat surface part, so that it is completely suitable for flat contact with the workpiece surface without the curvature part being a hindrance.
  • no polishing agent or abrasive or no holding means for holding an abrasive or polishing agent is arranged on at least one, in particular an angled or the angular, transition region between the plane surface portion and the curved portion.
  • the angular transition area can be used, for example, for an operator there to be able to grasp the abrasive or polishing agent particularly easily, for example for an exchange.
  • the following measure advantageously provides that the curvature section and the flat surface section on opposite sides of the processing body extend essentially over its entire transverse width. Consequently there are particularly large-area processing surfaces, for example on an upper side and a lower side of the processing device.
  • the plane surface section extends over part of the cross section of the machining body and the curved part extends over all other areas of the cross section of the machining body.
  • the surface processing device thus provides the flat surface section on the one hand and the curvature section on the other hand.
  • a configuration would also be possible in which, for example, side wall sections or side sections are present in addition to the plane surface section, which in turn merge into the curved section. This makes it possible, for example, to have a basically cuboid machining body, but one with a bend.
  • a preferred concept envisages that the curvature section adjoins opposite transverse end regions of the plane surface section.
  • a transition to the curvature section for example the above-mentioned angular transition area and / or the above-mentioned tangential transition area, is thus provided on each of the two transverse end areas or side areas of the plane surface section.
  • the machining body is designed entirely or at least in sections as a cylinder and / or as a cone, on the lateral surface of which the curved part and the flat surface part are provided.
  • the cylindrical configuration has the advantage that the machining body has a continuous shape over a longitudinal length or along a longitudinal axis, that is to say that large machining surfaces with contours that are the same over the longitudinal length or longitudinal axis are available for workpiece machining.
  • a cone has the advantage that, for example, the radii of curvature of the portion of curvature are larger at one longitudinal end region of the cylinder than at the other longitudinal end region. This means that additional and narrower radii of curvature are available. It goes without saying that, for example, a conical section can be provided on a cylindrical section of the machining body.
  • a stepped configuration of the machining body which is at least partially or partially conical and / or partially or partially cylindrical, is also possible: It is preferably provided that the processing body has at least one step or is designed as a step body. For example, several, for example at least two, cylindrical sections can be arranged next to one another with respect to a longitudinal axis of the processing body. A conical section can, for example, also adjoin these cylindrical sections or a cylindrical section.
  • the machining body preferably has the outer contour or jacket contour according to the invention over its entire longitudinal length.
  • the machining body it is also possible for the machining body to have the plane surface section and the curved section explained above over a section, while another section is, for example, cuboid or circular-cylindrical or with another different circumferential geometry or geometry of machining surfaces.
  • the machining body has the profile of the top of a wing in the region of the curvature section, on the underside of which the plane surface section is arranged.
  • the profile on the upper side therefore has a curvature profile that runs on one side in an arc towards the flat surface section, but in contrast runs out at an angle and flat.
  • a length of the machining body is greater than a transverse width and / or a transverse height of the machining body, the part of the curvature and the plane surface portion extending over the respective length of the machining body.
  • the machining body thus has an elongated shape.
  • a transverse width of the plane surface portion is greater than a height of the processing body, so that the processing body has a flat shape.
  • the processing body is expediently elastic. It preferably comprises or is made from a foam material.
  • the machining body has a relatively hard core, for example in that an air guide body or air guide body is arranged there, which acts as a stiffener.
  • the elastic and / or foam material can be arranged on the relatively hard core, so that in any case the preferred embodiment is achieved, which looks as follows.
  • a foam material or an elastic, resilient material is preferably provided at least in the area of the at least one processing surface.
  • the foam material preferably contains or is polyurethane foam.
  • the surface processing device expediently has an abrasive and / or polishing agent on the flat processing surface and / or the area of curvature.
  • a polishing agent or abrasive can, for example, be or comprise a grain or a grain structure.
  • the polishing agent or abrasive can also be a knitted fabric, e.g. an abrasive fabric, or an abrasive cloth or polishing cloth.
  • abrasives or polishing agents are arranged in different zones of the processing surface, for example the curved processing surface and the flat processing surface.
  • the curved part has an abrasive and the flat surface part has a polishing agent.
  • the section of curvature it is also possible for the section of curvature to have two different abrasives or polishing agents.
  • the flat surface section to have not only one abrasive or polishing agent, but at least two different abrasives, e.g. abrasives with different grit, different grain material or the like, or at least two different polishing agents, for example differently hard and / or dense polishing cloth , having.
  • the machining body prefferably has integral abrasives or polishing agents, that is to say, for example, that an abrasive grain, a knitted abrasive fabric, a polishing fabric or another polishing material or the like is arranged in the region of the at least one machining surface. If the machining body is worn out, it will be replaced.
  • holding means for example an adhesive layer, a Velcro layer or the like, are provided on the outer circumference of the processing body or the at least one processing area in order to provide an abrasive or polishing agent, for example a Grinding sheet, a knitted abrasive fabric or the like to keep.
  • the abrasive or polishing agent which can be arranged or arranged on the processing body in a detachable or fixed manner, expediently has a sheet-like shape.
  • the abrasive or polishing agent is an abrasive sheet or polishing sheet.
  • An abrasive or polishing agent that can be releasably arranged or arranged on the machining body expediently forms part of a system that has the machining body and the abrasive and / or the polishing agent.
  • the plane surface section and / or the curvature section have an abrasive and / or polishing agent without interruption or continuously.
  • the flat surface section and / or the curvature section it is also advantageous if it has continuous holding means, in particular a Velcro layer, for holding an abrasive or polishing agent.
  • no section is provided on the plane surface section or the curve section that has no abrasive or polishing agent.
  • transitions between sections or end regions of the polishing agent or abrasive are only possible on one Transition area between the plane surface section and the curvature section is provided.
  • no edge of a sanding sheet is arranged on the flat surface section or the curved section.
  • a drive in particular an electric or pneumatic drive motor with a corresponding transmission gear, can be provided for driving the machining body for rotary and / or eccentric and / or hypercycloid and / or oscillating movements.
  • the drive is arranged in a machine housing on which the processing body is arranged.
  • the manual processing device it is advantageous if, for example, it has a handle on which the processing body is arranged.
  • the handle is preferably arranged on an extraction connection or has an extraction connection for extracting dust from the at least one processing surface.
  • a machining device 10 comprises a machining body 20, on the outer circumference of which a plurality of machining surfaces 21, 22 and 23 are provided. Using the machining surfaces 21-23, a schematically indicated workpiece W can be processed on its workpiece surface O, for example ground and / or polished.
  • the processing surfaces 21-23 extend on an outer circumference 24 of the processing body 20, which is cylindrical per se.
  • the processing body 20 has a longitudinal shape and extends along a longitudinal direction or longitudinal axis L.
  • the machining surface 21 is equipped as a flat surface 25 or flat surface with which a correspondingly flat workpiece surface O can be optimally machined.
  • the machining surface 21 or flat surface 25 is provided on a machining surface part 28 which is designed as a flat surface part 26 on the basis of the flat surface 25.
  • the machining surfaces 22 and 23, on the other hand, are curved machining surfaces and are provided on machining surface parts 29, 30 which form components of a curvature part 27.
  • the processing areas 21-23 merge continuously into one another, so that they can also be referred to as a single processing area.
  • the distinction between processing areas 21-23 is intended in particular to clarify the assignment to the processing area sections 28-30.
  • the curved machining surfaces 22-23 in principle form a single machining surface which, however, has different radii of curvature and thus different geometrical properties, which will become clear below.
  • the curvature section 27 has a plurality of curvature sections 31, 32, 33, 34, 35, 36 which continuously merge into one another and which have different radii of curvature, for example curvature radii R1, R2, R3, R4, R5.
  • the curvature sections 31-36 merge continuously into one another, which means that, in the end, there are also other radii of curvature, not mentioned here in detail. It is possible that, for example, the curvature section 27, starting from the radius of curvature R1, has a plurality of radii of curvature not explained in detail up to the radius of curvature R5.
  • the flat surface section 26 goes into one in the Figures 4 and 5 transition region 37 shown on the right tangentially into the curvature section 27.
  • the smallest radius of curvature R1 is present there.
  • the curvature section 27 protrudes laterally in front of the plane surface section 26 in the transition region 37.
  • the section of curvature 27 does not protrude in front of the plane surface 25 to the front and or in its normal direction.
  • a flat contact of the flat surface 25 on the workpiece surface O is therefore possible without being affected by the curve portion 27.
  • the narrow radius of curvature R1 enables the processing of correspondingly curved or narrow parts of the workpiece surface O.
  • the radius R5 is significantly larger, for example at least twice as large or three times as large, preferably approximately four times as large as the radius R1, so that the curve portion 27 leads to a transition region 38, where the curve portion 27 is angled to the plane surface portion 26 adjoins, runs out relatively flat, for example at an angle of less than 90 °, preferably 80-70 °.
  • the transition region 38 and the transition region 37 are provided on opposite sides of the plane surface section 26 and extend along the longitudinal axis L.
  • the processing body 20 has a cylindrical, wing-like shape, the underside of the "wing", in contrast to a real wing, being flat or flat, that is to say having no concave or convex curvature.
  • the top of this wing extends convexly over the flat surface 25 and is on the Transition area 37 round, while in the transition area 38 it ends at an angle with respect to the flat surface 25.
  • a transverse width B1 of the flat surface 25 or the flat surface portion 26 is almost as large as a transverse width B2 of the curved portion 27, so that the surface of the curved portion 27 and the flat surface 25 that can be effectively used for machining the workpiece is similarly large.
  • the usable surface of the curvature section 27 is larger insofar as the transverse width B2 is larger than the transverse width B1 and the curvature section 27 also extends convexly over the plane surface section 26, so to speak arches.
  • the processing body 20 namely has a height H over which the curvature section 27 arches over the plane surface section 26.
  • the height H is advantageously about half as large as the transverse width B1 or B2.
  • the angular transition region 38 is not provided for workpiece machining in the exemplary embodiment. In principle, however, this would be possible without further ado, for example if an appropriate polishing agent or abrasive is present there.
  • a base material or base material 39 of the processing body 20 is exposed in the transition region 38, ie no polishing agent or abrasive is provided, and also no adhesive or holding means 40, which otherwise extends over the outer circumference 24 of the processing body 20.
  • the base material 39 is, for example, a polyurethane foam or other elastic material.
  • the adhesive or holding means 40 comprises, for example, a Velcro layer, adhesive layer or the like.
  • the transition region 38 which is provided without holding means 40, has a grip zone or grip regions 41, on which an abrasive means 120, explained below, in the form of an abrasive sheet can be comfortably gripped and thus removed from the processing body 20.
  • the relatively soft machining body 20 is covered on its end faces, so to speak the cylinder base surfaces, by covers 42, 43 and thus protected.
  • the covers 42, 43 are preferably harder than the base material 39, for example made of a thermoplastic.
  • the covers 42, 43 comprise, for example, cover plates or are designed as such.
  • the covers 42, 43 can be glued to the foam material of the processing body 20.
  • the abrasive 120 has holding means 140, for example a Velcro layer or Velcro hook, which interact with the holding means 40 of the machining body 20 in the sense of a solid neck suitable for surface machining of the workpiece W.
  • the abrasive 120 can be releasably attached to the outer circumference 24 of the machining body 20 using the holding means 140, 40.
  • This is known per se.
  • an abrasive material 124 for example a knitted abrasive fabric, a grit or the like, with which the workpiece surface O can be treated in the sense of an abrasive machining or abrasive machining.
  • an abrasive, polishing agent or the like for example the abrasive material 124, to be arranged directly on the outer circumference 24 of the machining body 20.
  • the abrasive 120 When the abrasive 120 is disposed on the machining body 20 (not shown), it takes the one shown in FIG Figure 2 schematically indicated shape of the outer periphery 24 of the processing body 20.
  • the abrasive 120 therefore has a machining surface 121 and machining surfaces 122, 123 which bear against the machining surfaces 21, 22, 23 of the machining body 20.
  • the processing area 121 forms a flat surface 125 and thus a flat surface part 126, while the other machining surfaces 122, 123 form components of a curved part 127, corresponding to the curved part 27 of the machining body 20.
  • the abrasive 120 has side edges 141 which come to rest on the grip areas 41 when the abrasive is arranged on the machining body 20.
  • the abrasive 120 can therefore be gripped comfortably there and, as it were, removed from the processing body 20, the holding means 40, 140 separating from one another.
  • inflow openings 150, 151, 152 are provided on the processing surfaces 121, 122, 123, through which dust can be extracted, which is formed, for example, during abrasive machining of the workpiece surface O using the grinding material 124.
  • the inflow openings 150-152 are made, for example, in the manner of holes, protruding tongues or the like.
  • the inflow openings 150-152 communicate with inflow openings 50, 51 and 52 on the machining surfaces 21, 22, 23, and thus therefore with inflow openings 50, 51 and 52, which are on the machining surface parts 28-30 are provided.
  • the inflow openings 50, 51, 52 have, for example, angular distances with angles W1 and W2, which are preferably the same. Dust extraction is thus possible on mutually angular sides of the processing body 20, namely with angular distances W1 and W2.
  • the inflow openings 50, 51, 52 are fluidly connected to an inlet channel arrangement 53, the inlet channels 54, 55, 56 of which are open to the respective processing surface 21, 22, 23.
  • the inlet channels 54-56 are mentioned by way of example and stand for a multiplicity of inlet channels which extend from the inflow openings 50-52 branch off.
  • One or more of the inflow openings 150-152 of the abrasive 120 are arranged above a respective inlet duct 54-56, so that air laden with dust passes through the respective inflow opening 150-152 into the inlet ducts 54-56 and from there further into the inflow openings 50, 51 and 52 can flow.
  • an inflow opening 50-52 is not provided for each of the inflow openings 150-152.
  • dust air can flow through a plurality of inflow openings 150-152 and via the inlet channels 54-56 to the inflow openings 50-52.
  • an inlet duct 54, 55 or 56 it is possible for an inlet duct 54, 55 or 56 to communicate or to be connected to a plurality of the inflow openings 50 or 51 or 52, which is shown in the example of the flow duct 55 in Figure 1 is indicated. In any case, it is ensured that dust extraction is provided in each case under a plurality of inflow openings 150-152 of the abrasive 120.
  • the processing body 20 When using the processing device 10, the processing body 20 is usually only partially in engagement with the workpiece W. For example, only one of the processing sections 28, 29 or 30 is used effectively, while the other processing sections are not used.
  • the operator will namely select the machining section 28, 29, 30 that is best adapted to the respective surface geometry of the workpiece surface O or that enables optimal grinding or polishing.
  • the problem here is that dust extraction would not only take place on the processing section 28, 29, 30 used in each case, but also that air would flow over the unused processing section 28 or 29 or 30, that is to say, false air would flow, so to speak.
  • the dust extraction can be effectively adjusted using an adjusting device 60, 260, 360.
  • the setting device 60 is according to the processing device 10 Figures 1-7 provided, the setting device 260 in accordance with a processing device 210 Figures 8-12 and the setting device 360 according to a processing device 310 Figures 13, 14 and 15 .
  • the processing devices 210, 310 have processing bodies 220, 320 which, with regard to their basic external design, For example, the outer circumference 24, the processing surface parts 28-30 and the like are constructed identically, so that they are not explained in more detail. However, the flow concept and the setting of the same for the suction flow are designed differently.
  • the setting devices 60, 260, 360 make it possible to switch the suction between the inflow openings 50, 51 and 52 and, in advantageous refinements, to influence the suction power or the effective flow cross-section available for the inflow openings 50, 51 and 52 for the suction.
  • the inflow openings 50, 51 and 52 are connected in terms of flow via a channel arrangement 57 and the setting devices 60, 260, 360 to a suction connection 11.
  • the suction connection 11 comprises, for example, a connection element 12, in particular in the manner of a connection piece, to which a suction hose SL can be connected, which leads to a suction device AB.
  • the suction device AB comprises, for example, a mobile vacuum cleaner or a stationary central dust extraction system.
  • dust extraction can of course also be provided on board the processing device.
  • a dust collection container is connected to the suction connection 11.
  • a fan or another flow generator for generating a suction flow which can flow through the inflow openings which are assigned to the machining surfaces, in particular a respective machining surface section, in the exemplary embodiment thus the inflow openings 50 or 51 or 52, is then preferably assigned to this or upstream.
  • connection element 12 comprises, for example, a connection section 13 for attaching or inserting the suction hose SL. Ribs are preferably provided on the connection section 13.
  • the connection element 13 furthermore has a connecting section 14 which is provided for the rotatable connection with the components of the adjusting device 60 which are explained further below.
  • the channel arrangement 57 comprises transverse channels 58, which lead inward from the inflow openings 50, 51, 52 in the processing body 20, 220, 320 and open out in the processing body 20 via passage openings 68 into a central suction channel 45, in the processing body 220 into separate suction channels 245, 246, 247 and in processing body 320 in separate suction channels 345, 346, 347.
  • the suction channels 45, 245, 246, 247 and 345, 346, 347 extend along the longitudinal axis L, of the processing body 20, 220, 320, preferably over the entire or almost the entire longitudinal length of the processing body 20, 220, 320 closed by the covers 42, a different closure would also be possible.
  • the suction channel 45 is provided in a suction channel body 65 which has a tubular shape.
  • the suction channel body has, for example, a peripheral wall 66, which is tubular.
  • the peripheral wall 66 or the suction channel body 65 is expediently provided with ribs 67 which improve the hold in the base material 39 of the processing body 20.
  • the suction channel body 65 is foamed with the base material 39.
  • the suction channel body 65 can be closed by the cover 42, but also by a base which is integrally formed on the suction channel body 45.
  • the cover 42 has, for example, a locking projection 42a which can be inserted into the suction channel body 65 or into a cavity of the processing body 20 which has the suction channel body 65.
  • passage openings 68 are also provided, which are flow-connected to the transverse channels 58, in particular in alignment. Dust air can thus flow through the inflow openings 50-52 and the transverse channels 58 and finally through the through openings 68 in order to reach the suction channel 45.
  • connection section 69 for example a connection sleeve 70.
  • a screw thread 71 in particular an internal thread, is preferably provided on the connection section 69, which is connected to the peripheral wall 66 or represents an extension thereof.
  • a contact surface could also be provided for gluing or latching or the like.
  • the suction channel 45 extends in the suction channel body 65 and opens out of the suction channel body 65 at the connection section 69.
  • connection element 73 is connected, for example screwed, to the connection section 69.
  • the connection element 73 comprises, for example, a tubular or sleeve-shaped connection body 74, which has a screw thread 75 on a connecting section.
  • the screw thread 75 is screwed into the screw thread 71 of the suction channel body 65 in order to create an essentially airtight connection.
  • the connector body 74 penetrates, for example, a passage opening 44 in the cover 42.
  • a space 77 is provided between an end face 76 of the connector body 74 and the bottom of a receptacle 72 of the connector section 69, in which the screw thread 71 is arranged.
  • connection element 73 has a bearing receptacle 78, in which an adjusting element 80 engages and in which the adjusting element 80 is rotatably mounted.
  • An axis of rotation D of the adjusting element 80 with respect to the bearing seat 78 corresponds to e.g. the longitudinal axis L.
  • the connecting element 73 and the adjusting element 80 together form bearing elements of a rotary bearing.
  • the adjusting element 80 has a channel body 81 which projects from an adjusting section 82 of the adjusting element 80 towards the suction channel body 65.
  • the adjusting section 82 has, for example, a receptacle 83, in which the connecting element 12 engages with the connecting section 14.
  • the receptacle 83 forms a pivot bearing receptacle in which the connecting section 14 can be rotated is mounted so that a rotational decoupling between the connection element 12 or the suction port 11 on the one hand and the processing body 20 and / or the adjusting device 60 is created.
  • a holding projection 84 in the receptacle 83 for example an annular or partially annular rib which is arranged on the inner circumference of the receptacle 83 and projects radially inward and engages in a corresponding recess 15 on the connecting section 14 of the connecting element 12.
  • the connection element 12 is fixed in tension with respect to its axis of rotation, about which it can rotate relative to the receptacle 83.
  • the axis of rotation corresponds to the longitudinal axis L or is parallel to the longitudinal axis L.
  • connection element 12 bears with a flange projection 16 on an end face 85 of the setting element 80. It is also advantageous if an end face of the connecting element 12 or the connecting section 14 is supported on the bottom of the receptacle 83.
  • the adjusting element 80 can rotate freely between the suction hose SL and the machining body 20.
  • the setting element 80 is held on the connection element 73 in a tensile manner with respect to the longitudinal axis L or its axis of rotation D relative to the connection element 73 by means of a latching.
  • hook projections 86 are provided on the adjusting element 80, which protrude in front of the actuating section 82.
  • the hook projections 86 have hook lugs 87, which engage in the intermediate space 77, so that by means of this rear grip, the setting element 80 on the connection element 73 is fixed with respect to the longitudinal axis L of the axis of rotation D with respect to the connection element 73.
  • the hook projections 86 are spaced apart from one another in the circumferential direction, so that they can be moved radially to the extent that they engage in the bearing receptacle 78.
  • the setting element 80 in the bearing receptacle 78 can be inserted and locked along the longitudinal axis L or the axis of rotation D. Assembly is easy.
  • Fixing means 88 are preferably provided, in particular a latching device or latching means.
  • the fixing means 88 comprise, for example, locking lugs 89 which protrude radially outward from the hook projections 86 and engage in corresponding locking recesses 79 in the connecting element 73.
  • the locking recesses 79 are provided, for example, on an inner circumference of the bearing receptacle 78.
  • An air guide body 90 is connected in a rotationally fixed manner to the adjusting element 80, in particular the channel body 81.
  • the channel body 81 is inserted into the air guide body 90 and glued, latched, pressed or otherwise firmly connected to it in the region of a connecting part 81A. If the adjusting element 80 is rotated about the axis of rotation D, the air guide body 90 rotates accordingly.
  • the air guide body 90 has a cylindrical or tubular shape and extends along the longitudinal axis L in the suction channel 45.
  • the air guide body 90 is rotatably mounted in the suction channel 45.
  • the air guide body 90 has a circumferential wall 91, on which flow openings 92, 93 are provided, through which air can flow into an interior of the air guide body 90, namely into a flow channel 94.
  • Sealing contours 95 for example longitudinal ribs, are provided on the outer circumference of the air guide body 90 which abut the inner circumference of the suction channel 45 or are at least arranged close to this inner circumference.
  • Through the sealing contours 95 are angular segments of the air guide body 90 separated from one another, so to speak.
  • One of the angle segments comprises, for example, the flow openings 92, another angle segment the flow openings 93.
  • the further angle segments, which are separated from one another by the sealing contours 95 have no flow openings, and are therefore flow-tight.
  • the throughflow openings 92 can be positioned relative to the through openings 68 assigned to the inflow openings 50 or 51 or 52, so that dust air S via the respective inflow openings 50 or 51 or 52, the transverse channels 58 and the flow openings 92 can flow into the flow channel 94 and can flow further via the setting element 80 to the suction connection 11, where the dust air S can flow into the suction hose SL from a flow channel 17 of the connection element 12.
  • a flow cross section of this flow connection is maximum.
  • the air guide body 90 thus forms a valve body or mask body 96, on the rotational position of which with respect to the axis of rotation D the flow cross-section depends, which is available for the respective inflow openings 50, 51 or 52 for suction via the suction connection 11.
  • a respective rotational position setting position of the air guide body 90 or the setting body 80 can be traced using at least one index 97 which is arranged, for example, on the outer circumference of the sleeve-shaped setting body 80.
  • symbols 98 for the respective machining surface section 28, 29, 30 are advantageously arranged on the adjusting body 80, in particular close to the index or the indices 97.
  • the flow openings 93 are an option.
  • the number or the effective flow cross section of the flow openings 93 is smaller than the number or the effective flow cross-section of the throughflow openings 92. If the throughflow openings 93 lie opposite the through openings 68, suction is still possible via the inflow openings 50 or 51 or 52 assigned to the through openings 68, but with a smaller size in comparison to the suction through the throughflow openings 92 Suction power or suction effect.
  • a configuration is also possible in which, for example, the flow openings 92 or the flow openings 93 or a combination of both, i.e. Both the push-through openings 92 and the flow-through openings 93 are positioned opposite the flow-through openings 68 assigned to a respective processing surface section 28, 29, 30.
  • the suction power for a respective processing surface 28, 29, 30 can thus be changed in a total of 4 stages: no flow, greater flow through the flow openings 93, even greater flow through the flow openings 92 and maximum flow via the combination of the flow openings 92 and 93.
  • the adjusting device 260 shown provides an adjustment facial expression arranged on the face near the suction connection 11 that the dust air can flow through one of the suction channels 245, 246 or 247 or the flow cross section of these suction channels 245, 246 or 247 is released or closed.
  • a mask body 296 of the setting device 260 is arranged between the suction connection 11 and the front side or on the front side of the processing body 220.
  • the suction channels 245, 246 or 247 run in a suction channel body 265 which extends along the longitudinal axis L in the processing body 220.
  • the suction channel body 265 has a peripheral wall 266 which delimits a tubular interior in which are arranged partition walls 267 which extend along the longitudinal axis and are connected to one another, approximately in the center of the suction channel body 265.
  • the partition walls 267 are arranged, for example, in a star shape and separate the interior of the suction channel body 265 delimited by the peripheral wall 266 into the suction channels 245, 246 or 247.
  • Circumferential wall 266 is provided with through-openings 268 communicating with suction channels 245, 246 or 247, which are flow-connected with transverse channels 58, which in turn communicate with inflow openings 50, 51, 52 and thus with processing area parts 28, 29, 30.
  • each processing surface section 28, 29, 30 is assigned one of the suction channels 245, 246 or 247.
  • one of the suction channels 245, 246 or 247 can be fluidly connected to the suction connection 11, so that as a result one of the processing surface sections 28, 29 or 30 is connected to the suction connection 11 and suction for the respective processing surface section 28, 29 or 30 is ready.
  • the setting element 280 forms or comprises the mask body 296.
  • the setting element 280 rotatably receives the connection element 12 already explained.
  • the setting element has a receptacle 283 in which the connecting section 14 is rotatably mounted.
  • a retaining projection 284 arranged on the receptacle 283, for example an annular retaining projection 284 in the manner of the retaining projection 84, engages in its recess 15, so that the connecting element 12 can be rotated with respect to its axis of rotation D, but not along the axis of rotation D from FIG Recording 283 is extendable.
  • the setting element 280 is rotatably mounted, for example, relative to the suction hose SL, or conversely, the suction hose SL is rotatably mounted with respect to the setting element 280.
  • connection element 270 which is rotationally fixed with respect to the processing body 220 and the suction channel body 265.
  • the connection element 270 comprises, for example, a sleeve section 273 in which the suction channel body 265 is received or into which it is inserted.
  • connection element 270 projects, for example, in front of a cover 243 and is preferably integrally connected to it, which in principle corresponds to the cover 43 and covers the processing body 220 on the end face.
  • the cover 243 has a passage opening 244.
  • a bearing receptacle 278 for the setting element 280 is provided on the connecting element 270.
  • the setting element 280 is rotatably received in the bearing holder 278.
  • the support projection 287 and the support receptacle 277 form a pull-out protection or ensure that the adjusting element 280 can be rotated with respect to its axis of rotation D of the bearing receptacle 278, but cannot be pulled out of this bearing receptacle 278 along the axis of rotation D.
  • the setting element 280 is supported with end-side support projections 282 on the bottom of the bearing receptacle 278, in particular on an annular bearing surface 275.
  • latching recesses 279 In the area of the bearing surface 275 there are additionally latching recesses 279, in any case at least one latching recess 279, which are or are provided for latching with one or more latching projections 289.
  • the at least one latching projection 289 projects in front of the supporting projections 282 and engages in the latching recess 279 in the respective setting positions of the adjusting element 280.
  • the elasticity of the locking projection 289 is preferably increased in that it has a cavity 289A into which an arcuate section 289B of the locking projection 289 can deform.
  • symbols 98A and 98B and a further symbol which is not visible in the drawing are provided, which indicate the suction with respect to a respective processing surface section 28, 29 or 30.
  • An end wall 295 extends in the interior of the adjusting element 280, on which a throughflow opening 292 and optionally a throughflow opening 293 is provided.
  • the throughflow opening 292 has a large area and extends over an angular segment which corresponds to the flow cross section of a suction channel 245-247. So if the flow opening 292 frontally in front of one of the suction channels 245-247 stands or is flush with it, a maximum flow cross-section is available for the processing surface section 28-30 assigned to the respective suction channel 245-247. If, however, the smaller cross section of the throughflow opening 293 is in front of a respective suction channel 245-247, the flow cross section is smaller, in other words, the suction power is reduced.
  • the processing area part 28, 29 or 30 assigned to the suction channel is not suctioned off or with reduced suction power.
  • the adjusting element 280 thus influences the effective flow cross section which is available for the extraction of a respective processing section 28, 29, 30.
  • the latching arrangement or the latching means with the latching projection 289 and the latching recess 279 is preferably designed such that in a respective latching position the throughflow opening 292 is aligned with one of the suction channels 245-247 in each case.
  • a cross section of the flow opening 292 suitably corresponds to a flow cross section of a suction channel 245, 246, 247.
  • the suction channels 345, 346, 347 being tubes which are separate from one another and pass through the processing body 320 parallel to the longitudinal axis L.
  • the individual tubes can, for example, be integrally formed in the manufacturing process of the machining body 320, for example when the base material 39 is foamed with a corresponding shape.
  • one or more mask bodies 396, 496 can be provided, for example disk-like or drum-like mask bodies.
  • the mask bodies 396, 496 are, for example, about an axis of rotation with respect to the suction channels that is not visible in the drawing and extends between the suction channels 345, 346, 347 parallel to the longitudinal axis L 345, 346, 347 rotatably mounted.
  • the axis of rotation corresponds, for example, to the axis of rotation D already explained.
  • the mask body 396 has, for example, a through-flow opening 392 and preferably a further through-flow opening 393, which can be aligned with the suction channels 345, 346, 347 by rotation about the aforementioned axis of rotation.
  • the mask body 396 thus forms an adjusting element 380.
  • the throughflow opening 392 is aligned with the suction channel 347, while the throughflow opening 393 is aligned with the suction channel 346, thus providing a smaller flow cross section there. Accordingly, the processing area section 30 is suctioned off with a higher suction power than the processing area section 29
  • Figure 14 can be seen the mask body 396 rotated counterclockwise, so that the flow opening 392 is only partially in front of the suction channel 347, so there the suction power or the flow cross section is reduced.
  • the throughflow opening 392 is aligned with the suction channel 346, so that a maximum suction power is available on the processing surface section 29, while the suction on the processing surface section 30 is switched off, so to speak.
  • the options for setting the suction power on one or more of the processing surface sections 28, 29 or 30 can be improved by the further mask body 496.
  • This has, for example, a flow opening 492 which, by rotating the mask body 496 relative to the suction channels 345, 346, 347 and relative to the flow openings 392 and optionally 393, makes variable flow cross sections adjustable between the suction connection 11 and the suction channels 345, 346, 347.
  • a machining body 420 ( Figure 16 ) is designed as a step body.
  • the processing body 420 has, for example, partial processing bodies 420A, 420B which have different cross sections. Both partial machining bodies 420A, 420B are arranged directly next to one another or adjoin one another, a step 418 being provided between the two partial machining bodies 420A, 420B.
  • the part machining bodies 420A, 420B can be made in one piece or in one piece.
  • the partial machining bodies 420A, 420B in the exemplary embodiment according to FIG Figure 16 the same cross-sectional geometry, but different cross-sectional area dimensions.
  • the result of this is that portions of curvature 427A, 427B of the partial machining bodies 420A, 420B have the same basic geometrical contours but different radii.
  • the partial machining bodies 420A, 420B have curvature parts 427A, 427B which correspond geometrically to the curvature part 27 and plane surface parts 426A, 426B which correspond to the plane surface part 426.
  • the partial machining bodies 420A, 420B it would be possible for the partial machining bodies 420A, 420B to be coaxial with respect to a longitudinal axis which passes through their respective cross sections in the center. In the present case, however, an embodiment has been selected in which the flat surface parts 426A, 426B of the partial machining bodies 420A, 420B merge flatly into one another, i.e. merge into each other without a step, so that a continuous plane surface portion 426 is formed.
  • the step 418 is provided between the curved parts 427A, 427B of the partial machining bodies 420A, 420B.
  • the configuration of the machining body 420 is such that machining surfaces 422A, 422B of the partial machining bodies 420A, 420B are aligned with one another at least in a transition region 438 corresponding to the transition region 38, while between machining surfaces 423A, 423B which correspond to the machining surfaces already explained 23 are similar in principle, and between the transition regions 437A, 437B, which in principle are the same as the transition region 37, the step 418 is formed.
  • this offset or step 418 can also be provided between the machining surfaces 422A, 422B if the partial machining bodies 420A, 420B are arranged differently relative to one another transversely to a longitudinal axis LA of the machining body 420 (not shown) ).
  • suction is preferred, i.e. that, for example, the connection element 12 with the connection section 13 is arranged on the processing body 420, in particular on the partial processing body 420A which is smaller in cross section.
  • the connection element 12 with the connection section 13 is arranged on the processing body 420, in particular on the partial processing body 420A which is smaller in cross section.
  • the grinding material 124 for example a grain, a granular structure, a knitted fabric or the like, can be arranged directly.
  • the machining body 420 prefferably has, for example, a holding means 480 comparable to the holding means 40 in the region of the machining surfaces 423A and / or 423B and / or 422A and / or 422B, on which an abrasive or polishing agent, for example an abrasive sheet, polishing material , Knitted fabric or polishing fabric or the like, is releasably attachable.
  • an abrasive or polishing agent for example an abrasive sheet, polishing material , Knitted fabric or polishing fabric or the like
  • processing surfaces 423A, 423B, 422A, 422B for example on one of the processing surfaces
  • a holding means for example, a polishing material on another and a knitted polishing fabric on another processing surface.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Cleaning In General (AREA)

Claims (15)

  1. Appareil d'usinage de surfaces (10), en particulier appareil de ponçage manuel, avec un corps d'usinage (20), qui présente au moins une surface d'usinage (21 -23) servant à usiner par ponçage ou polissage une surface de pièce (O), dans lequel sont disposées au niveau de l'au moins une surface d'usinage (21 - 23) des orifices d'admission (50 - 52) servant à l'évacuation par aspiration d'air chargé de poussières, qui sont en liaison fluidique avec un raccord d'évacuation par aspiration (11) par l'intermédiaire d'un ensemble formant canal (57), auquel un système d'évacuation par aspiration (AB) peut être raccordé, caractérisé en ce qu'il présente un système de réglage (60 ; 260 ; 360) servant à ajuster des sections transversales d'écoulement effectives, avec lesquelles des orifices d'admission (50) d'une première partie de surface d'usinage (28) de l'au moins une surface d'usinage (21 -23) et des orifices d'admission (51 - 52) d'au moins une deuxième partie de surface d'usinage (29, 30) sont en liaison fluidique avec le raccord d'évacuation par aspiration (11) de sorte qu'un effet d'évacuation par aspiration peut être réglé et/ou désactivé au niveau de la première partie de surface d'usinage (28) et de l'au moins une deuxième partie de surface d'usinage (29, 30).
  2. Appareil d'usinage selon la revendication 1, caractérisé en ce que la première et l'au moins une deuxième surface d'usinage (21 - 23) sont disposées au niveau de côtés, formant un angle les uns par rapport aux autres, d'une périphérie extérieure (24) du corps d'usinage (20) ou au niveau de côtés opposés les uns aux autres du corps d'usinage (20).
  3. Appareil d'usinage selon la revendication 1 ou 2, caractérisé en ce que le système de réglage (60 ; 260 ; 360) est configuré aux fins d'une réduction de la section transversale d'écoulement effective entre le raccord d'évacuation par aspiration (11) et la première partie de surface d'usinage (28) en faveur d'un agrandissement de la section transversale d'écoulement effective entre le raccord d'évacuation par aspiration (11) et l'au moins une deuxième partie de surface d'usinage (29, 30), et/ou que le système de réglage (60 ; 260 ; 360) est configuré pour commuter une liaison fluidique entre le raccord d'évacuation par aspiration (11) et les orifices d'admission (50) de la première partie de surface d'usinage (28) et les orifices d'admission (51 - 52) de l'au moins une deuxième partie de surface d'usinage (29, 30) de sorte que soit les orifices d'admission (50) de la première partie de surface d'usinage (28) soit les orifices d'admission (51 - 52) de l'au moins une deuxième partie de surface d'usinage (29, 30) sont reliés au raccord d'évacuation par aspiration (11).
  4. Appareil d'usinage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il présente des moyens de blocage (88) servant à bloquer, en particulier des moyens d'enclenchement et/ou un système de verrouillage servant à enclencher ou à verrouiller, le système de réglage (60 ; 260 ; 360) dans au moins une position de réglage et/ou dans toutes les positions de réglages, dans lesquelles le raccord d'évacuation par aspiration (11) est en liaison fluidique avec respectivement seulement une des surfaces d'usinage (21 -23).
  5. Appareil d'usinage selon l'une quelconque des revendications précédentes, caractérisé en ce que le système de réglage (60 ; 260 ; 360) présente un élément de réglage pouvant être actionné manuellement, en particulier une bague de réglage ou une douille de réglage, servant à ajuster les sections transversales d'écoulement effectives.
  6. Appareil d'usinage selon la revendication 5, caractérisé en ce que l'élément de réglage est relié de manière couplée en déplacement ou de manière fixe à un corps de masque ou présente un corps de masque, dans lequel le corps de masque est disposé entre les orifices d'admission (50-52) des parties de surface d'usinage (28-30) et le raccord d'évacuation par aspiration (11) et présente une section de passage présentant un orifice de passage et au moins une section de réduction, qui présente une surface de fermeture servant à fermer une liaison fluidique entre les orifices d'admission (50 - 52) d'au moins une partie de surface de traitement (28 - 30) et le raccord d'évacuation par aspiration (11) ou est perméable à l'air avec une section transversale d'écoulement effective plus petite que la section de passage, dans lequel le corps de masque est monté de manière mobile, en particulier de manière rotative, pour positionner la section de passage ou l'au moins une section de réduction entre le raccord d'évacuation par aspiration (11) et les orifices d'admission (50 - 52) d'une partie de surface d'usinage (20 - 30) respective à l'aide d'un palier, en particulier d'un palier rotatif, par rapport au corps d'usinage (20).
  7. Appareil d'usinage selon la revendication 6, caractérisé en ce que le corps de masque est perméable à l'écoulement seulement au niveau de la section de passage, et/ou que le corps de masque forme un élément constitutif d'un ensemble de masques, dont les masques peuvent être ajustés les uns par rapport aux autres, en particulier peuvent être tournés pour ajuster une section transversale d'écoulement effective pour l'air chargé de poussières entre les orifices d'admission (50 - 52) d'une surface d'usinage (21 - 23) respective et le raccord d'évacuation par aspiration (11).
  8. Appareil d'usinage selon l'une quelconque des revendications précédentes, caractérisé en ce que s'étend le long d'un axe longitudinal (L) du corps d'usinage (20) au moins un canal d'évacuation par aspiration (45), qui est en liaison fluidique avec le raccord d'évacuation par aspiration (11) et les orifices d'admission (50 - 52) d'au moins une première partie de surface d'usinage (28) ou de l'au moins une deuxième partie de surface d'usinage (29, 30) à l'aide de canaux transversaux ou d'une structure perméable à l'écoulement.
  9. Appareil d'usinage selon la revendication 8, caractérisé en ce qu'un corps de guidage d'air (90) en particulier en forme de tube et/ou en forme de barre, formant en particulier un corps de masque selon la revendication 7, est monté de manière à pouvoir tourner et/ou à être coulissé, en particulier autour d'un axe s'étendant le long de l'axe longitudinal (L), dans l'au moins un canal d'évacuation par aspiration (45), dans lequel le corps de guidage d'air (90) présente au niveau de sa périphérie extérieure au moins une ouverture de passage, qui est en liaison fluidique avec un canal d'écoulement (94), qui s'étend le long de l'axe longitudinal et est en liaison fluidique avec le raccord d'évacuation par aspiration (11) de sorte que l'au moins un orifice de passage (92, 93) du corps de guidage d'air (90) par rapport aux orifices d'admission (50 - 52) et/ou par rapport à au moins un orifice de passage (68), communiquant avec les orifices d'admission (50-52) d'au moins une partie de surface d'usinage, du canal d'évacuation par aspiration (45) peut être ajusté pour modifier la section transversale d'écoulement effective des orifices d'admission (50 - 52) par rapport au raccord d'évacuation par aspiration (11) par un ajustement du corps de guidage d'air (90) dans le canal d'évacuation par aspiration (45).
  10. Appareil d'usinage selon la revendication 9, caractérisé en ce que le corps de guidage d'air (90) présente au niveau d'une première zone de segment d'angle ou d'une zone longitudinale de sa périphérie extérieure (24) au moins un orifice de passage de flux, en particulier un ensemble aligné d'orifices de passage de flux disposés côte à côte le long de l'axe longitudinal (L), et ne présente au niveau d'au moins une deuxième zone de segment d'angle ou d'une zone longitudinale aucun orifice de passage de flux ou aucun orifice de passage de flux avec une section transversale d'écoulement plus petite qu'au niveau de la première zone de segment d'angle ou de la zone longitudinale, dans lequel les orifices de passage de flux sont en liaison fluidique avec le canal d'écoulement (94), et dans lequel la première zone de segment d'angle ou zone longitudinale ou l'au moins une deuxième zone de segment d'angle ou zone longitudinale sont en liaison fluidique avec les orifices d'admission (50 - 52) de la première partie de surface d'usinage (28) ou de l'au moins une deuxième partie de surface d'usinage (29, 30) pour ajuster la section transversale d'écoulement effective entre le raccord d'évacuation par aspiration (11) et la surface d'usinage (21 - 23) respective par rotation ou coulissement du corps de guidage d'air (90).
  11. Appareil d'usinage selon la revendication 9 ou 10, caractérisé en ce que le corps de guidage d'air (90) présente au niveau de sa périphérie extérieure (24) des contours d'étanchéité s'étendant dans la direction longitudinale et délimitant au moins une zone de segment d'angle et/ou des contours d'étanchéité s'étendant dans la direction périphérique et délimitant une zone longitudinale, en particulier des parties faisant saillie d'étanchéité ou des nervures d'étanchéité, qui reposent au niveau d'une périphérie intérieure du canal d'évacuation par aspiration (45).
  12. Appareil d'usinage selon l'une quelconque des revendications précédentes, caractérisé en ce que respectivement un canal d'évacuation par aspiration (245-247 ; 345-347) est prévu pour chaque surface d'usinage (21 - 23), qui s'étend le long de l'axe longitudinal (L) du corps d'usinage (20) et est en liaison fluidique avec les orifices d'admission (50-52) de la partie de surface d'usinage (28 - 30) respective.
  13. Appareil d'usinage selon la revendication 12 en lien avec la revendication 6, caractérisé en ce que le corps de masque est disposé entre le raccord d'évacuation par aspiration (11) et les canaux d'évacuation par aspiration (245 - 247 ; 345 - 347), dans lequel le corps de masque est monté manière mobile à l'aide du palier, en particulier de manière à pouvoir tourner, pour positionner la section de passage et l'au moins une section de réduction entre un canal d'évacuation par aspiration (245-247 ; 345-347) respectif et le raccord d'évacuation par aspiration (11).
  14. Appareil d'usinage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un élément de raccordement en particulier en forme de douille du raccord d'évacuation par aspiration (11) est monté de manière à pouvoir tourner par rapport au corps d'usinage (20) pour raccorder un tuyau flexible d'évacuation par aspiration, dans lequel de manière avantageuse le corps d'usinage (20) et le tuyau flexible d'évacuation par aspiration peuvent être tournés l'un par rapport à l'autre sans un ajustement du système de réglage (60 ; 260 ; 360), et/ou qu'est disposé au niveau de l'au moins une surface d'usinage (21 - 23) un ensemble formant canal d'entrée ouvert latéralement vers la surface d'usinage (21 -23), lequel est en liaison fluidique avec le raccord d'évacuation par aspiration (11) à l'aide d'au moins un des orifices d'admission (50 - 52) ou des orifices d'admission (50 - 52).
  15. Appareil d'usinage selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps d'usinage (20) présente une partie de surface plane (26) avec une surface d'usinage (21) plane servant à usiner des surfaces de pièce (O) planes et au moins une partie d'incurvation (27) avec une surface d'usinage (22 - 23) incurvée servant à usiner des surfaces de pièce incurvées (O), dans lequel il est prévu de manière avantageuse que la partie d'incurvation (27) se raccorde à des zones d'extrémité transversales de la partie de surface plane (26) et s'étend par-dessus un côté, opposé à la partie de surface plane (26), du corps d'usinage (20) et la partie d'incurvation (27) présente plusieurs sections d'incurvation (31 - 36) s'imbriquant les unes dans les autres en continu avec des rayons d'incurvation (R1 - R5) différents les uns des autres et ne fait pas saillie de la surface d'usinage (21) plane de la partie de surface plane (26).
EP17742744.0A 2016-07-29 2017-07-21 Unité de traitement de surface munie d'un raccord d'aspiration Active EP3487663B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016114099.6A DE102016114099A1 (de) 2016-07-29 2016-07-29 Oberflächen-Bearbeitungsgerät mit einem Absauganschluss
PCT/EP2017/068548 WO2018019737A1 (fr) 2016-07-29 2017-07-21 Unité de traitement de surface munie d'un raccord d'aspiration

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EP3487663B1 true EP3487663B1 (fr) 2020-07-08

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EP (1) EP3487663B1 (fr)
CN (1) CN109689297B (fr)
DE (1) DE102016114099A1 (fr)
ES (1) ES2810354T3 (fr)
WO (1) WO2018019737A1 (fr)

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WO2017127050A1 (fr) * 2016-01-19 2017-07-27 Sound Technology Inc. Interconnexion de groupements de transducteurs d'ultrasons
DE102018111838A1 (de) * 2018-05-16 2019-11-21 Festool Gmbh Mobile Werkzeugmaschine
DE102018111836A1 (de) * 2018-05-16 2019-11-21 Festool Gmbh Mobile Werkzeugmaschine zur Bearbeitung einer Oberfläche

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US1844996A (en) * 1930-01-27 1932-02-16 Ernest E Walker Sandpaper holder
US2219444A (en) * 1937-12-02 1940-10-29 Kearney & Trecker Corp Grinding wheel dust hood
CA1080477A (fr) 1977-05-31 1980-07-01 Miksa Marton Ponceuse a main a aspirateur
US4296572A (en) * 1978-03-17 1981-10-27 Pedro Quintana Dust removing attachment device for automatic air files
US4766701A (en) * 1986-09-02 1988-08-30 Roestenberg Jerome R Vacuum rasp
DE19734631A1 (de) * 1997-08-09 1999-02-11 Bernhard Ringler Vorrichtung zum Reinigen von mit Bearbeitungsrückständen behafteten Werkstücken unter Verwendung von Reinigungsluft
US6260232B1 (en) * 1998-09-22 2001-07-17 Marc O. Nelson Surface cleaning apparatus
US6447387B1 (en) * 2001-02-13 2002-09-10 Ming-Qun Tseng Exhaust assembly for a pneumatic sanding device
DE10116501A1 (de) 2001-04-03 2002-10-17 Bosch Gmbh Robert Stutzen zum Anschluß eines Absaugschlauchs an eine Handwerkzeugmaschine
TW545322U (en) * 2002-12-26 2003-08-01 Pei-Lie Jiang Bits and chips discharging and dust collecting apparatus for multi-functional carpentry grinding machine
US7033259B1 (en) * 2005-04-13 2006-04-25 Shop Vac Corporation Hand sander vacuum attachment
WO2014029083A1 (fr) * 2012-08-22 2014-02-27 3M Innovative Properties Company Système de ponçage

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WO2018019737A1 (fr) 2018-02-01
US11511391B2 (en) 2022-11-29
ES2810354T3 (es) 2021-03-08
DE102016114099A1 (de) 2018-02-01
CN109689297B (zh) 2021-02-26
US20190176293A1 (en) 2019-06-13
CN109689297A (zh) 2019-04-26
EP3487663A1 (fr) 2019-05-29

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