EP3330044B1 - Machine-outil portative - Google Patents

Machine-outil portative Download PDF

Info

Publication number
EP3330044B1
EP3330044B1 EP17198177.2A EP17198177A EP3330044B1 EP 3330044 B1 EP3330044 B1 EP 3330044B1 EP 17198177 A EP17198177 A EP 17198177A EP 3330044 B1 EP3330044 B1 EP 3330044B1
Authority
EP
European Patent Office
Prior art keywords
bearing
tool holder
axis
drive
machine tool
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.)
Active
Application number
EP17198177.2A
Other languages
German (de)
English (en)
Other versions
EP3330044A1 (fr
Inventor
Jens Zieger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3330044A1 publication Critical patent/EP3330044A1/fr
Application granted granted Critical
Publication of EP3330044B1 publication Critical patent/EP3330044B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • 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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/06—Grinders for cutting-off
    • B24B27/08—Grinders for cutting-off being portable
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B19/00—Other reciprocating saws with power drive; Fret-saws
    • B27B19/006—Other reciprocating saws with power drive; Fret-saws with oscillating saw blades; Hand saws with oscillating saw blades

Definitions

  • the invention relates to a machine tool with the features of claim 1.
  • a “portable machine tool” is to be understood here in particular a machine tool for machining workpieces that can be transported without a transport machine by an operator.
  • the machine tool is designed as an electrically operated machine tool.
  • the machine tool is designed in particular as a mains-operated machine tool and/or preferably as a battery-operated machine tool.
  • the machine tool has a battery holder which is provided to hold a battery for operating the machine tool.
  • the battery holder is arranged at least essentially in a handle of the power tool.
  • the battery for operating the machine tool has only one battery cell.
  • the rechargeable battery has a maximum volume of 0.9 l, preferably a maximum of 0.7 l and particularly preferably a maximum of 0.5 l.
  • the rechargeable battery has an electrical output power of at least 50 W, preferably at least 75 W and particularly preferably at least 100 W.
  • the portable machine tool has in particular a mass which, including the battery in particular, is less than 700 g, preferably less than 600 g and particularly preferably less than 500 g.
  • the machine tool has a rated power of at least 50 W, preferably at least 75 W and particularly preferably at least 100 W.
  • a ratio between a gripping surface and a total surface area of the machine tool is between 0.4 and 0.9, but preferably between 0.5 and 0.75.
  • the machine tool is preferably designed as a delta sander, orbital sander or multi-sander.
  • a "drive unit” in this context is to be understood in particular as a unit which is intended to convert in particular electrical energy into kinetic energy, in particular rotational energy.
  • the drive unit has at least one electric motor.
  • a drive shaft of the drive unit is in particular at least partially formed by an armature shaft of the electric motor.
  • “Provided” should be understood to mean, in particular, specially designed, specially programmed and/or specially equipped.
  • the fact that an element and/or a unit is provided for a specific function is to be understood in particular to mean that the element and/or the unit fulfills/fulfils and/or executes this specific function in at least one application and/or operating state.
  • a "tool holder” is intended in particular a means of Coupling to a drive shaft, such as, in particular, a tool holder to which, for example, a grinding plate can be attached, as is often the case with a delta sander, or a grinding plate itself, which can be attached directly to the drive shaft, as is often the case with hand-held power tools with an oscillating drive is the case, and to which a sanding sheet can be fastened.
  • the tool holder is preferably provided for the purpose of receiving the application tool, in particular a sanding sheet, in a detachable manner by an operator.
  • the expression “essentially perpendicular” is intended here to define in particular an orientation of a direction relative to a reference direction, with the direction and the reference direction, viewed in particular in one plane, enclosing an angle of 90° and the angle has a maximum deviation of, in particular, less than 10 °, advantageously less than 5° and particularly advantageously less than 2°.
  • a “storage unit” is to be understood in particular as a unit that supports at least two components so that they can move with respect to one another.
  • the storage unit is provided in particular to mount the tool holder so that it can move relative to a housing of the machine tool.
  • the bearing unit is designed as a radial bearing unit.
  • the bearing unit can in particular be designed as a plain bearing and/or roller bearing unit.
  • the bearing unit is provided to mount the tool holder so that it can rotate about a bearing axis.
  • the drive unit is provided in particular to drive the tool holder in an oscillating manner about a bearing axis of the bearing unit. A bearing axis of the bearing unit intersects the tool holder at least essentially perpendicularly.
  • the drive axle and the drive axle are formed by two separate components.
  • the drive axle and the bearing axle are formed by two components arranged spatially spaced apart from one another.
  • the bearing axis and the drive axles run at least essentially spatially spaced apart from one another.
  • the bearing axis runs exclusively along at least one component of the bearing unit.
  • the drive axis runs exclusively at least along a component of the drive unit, in particular along the drive shaft of the drive unit.
  • the bearing axis runs along a component of the bearing unit that has no direct physical contact, in particular a material connection and/or frictional connection, with a component of the drive unit, in particular the drive shaft of the drive unit, which forms the drive axis.
  • a machine tool of the generic type with advantageous design properties and/or advantageous operating properties can be provided by such a configuration.
  • an advantageous oscillating drive of the tool holder about the bearing axis can take place.
  • the bearing axis intersects the tool holder offset to the drive axis.
  • the bearing axis and the drive axis intersect the tool holder at two spatially spaced intersection points.
  • the drive axis can intersect the tool holder at a point of intersection which lies on a circle enclosing the point of intersection between the bearing axis and the tool holder.
  • the circle enclosing the point of intersection between the bearing axis and the tool holder can have an at least essentially arbitrary radius.
  • the point of intersection between the bearing axis and the tool holder forms at least essentially a center point of the circle on which the point of intersection between the drive axis and the tool holder lies.
  • the drive axis preferably intersects the tool holder viewed along a main working direction of the machine tool at an intersection point which lies in front of or behind an intersection point between the bearing axis and the tool holder.
  • the drive axis intersects the tool holder at a point of intersection between the circle enclosing the point of intersection between the bearing axis and the tool holder and a main extension direction of the machine tool.
  • the drive axis runs at least essentially parallel to the bearing axis and is offset.
  • substantially parallel is to be understood here in particular as an alignment of a direction relative to a reference direction, in particular in a plane, with the direction relative to the reference direction deviating in particular by less than 10°, advantageously less than 5° and particularly advantageously less than 2°.
  • an advantageous arrangement and/or an advantageous course of the bearing axis and the drive axis can be achieved, in particular within the machine tool.
  • the bearing axis intersects the grinding plate at least essentially in the middle.
  • the fact that the bearing axis intersects the grinding plate at least essentially in the middle should be understood in particular to mean that an intersection point of the bearing axis with the tool holder is at least essentially identical to the center point of the tool holder.
  • the point of intersection of the bearing axis with the tool holder deviates from the center point of the tool holder by a maximum of 5 mm, preferably by a maximum of 2 mm, advantageously by a maximum of 1 mm and particularly preferably by a maximum of 0.5 mm. Due to the central mounting and the off-center drive of the tool holder, the tool holder can advantageously be driven in an oscillating manner about the bearing axis without vibrating elements.
  • the bearing unit has at least one bearing pin which extends along the bearing axis and to which the tool holder is fastened so that it can rotate about the bearing axis.
  • the bearing journal is at least essentially cylindrical.
  • the bearing journal is in particular formed at least in a non-positive manner with a housing of the machine tool.
  • the bearing journal can be formed in one piece with a housing of the machine tool.
  • “In one piece” is to be understood in particular as being at least cohesively connected, for example by a welding process, a gluing process, an injection molding process and/or another process that appears reasonable to a person skilled in the art, and/or advantageously formed in one piece, such as by production from a single cast and/or by production in one piece - Or multi-component injection molding and advantageously from a single blank.
  • the bearing axis extends in particular at least essentially along a main direction of extension of the bearing journal.
  • the bearing unit preferably has at least one radial bearing, which is provided for a rotatable mounting of the sanding plate about the bearing axis.
  • the radial bearing is arranged at least partially and preferably completely on the bearing journal.
  • the radial bearing can in particular be designed as a slide bearing and/or preferably as a roller bearing, in particular as a ball bearing.
  • the radial bearing can be connected to the bearing journal by means of a press fit.
  • the tool holder has at least one holder which is provided for at least partially accommodating the radial bearing of the bearing unit.
  • the tool holder can advantageously be attached to the machine tool in a simple and/or reliable manner so that it can rotate about the bearing axis.
  • the drive unit has a roller bearing which is arranged eccentrically to the drive axis on the drive shaft and is intended to transmit a movement from the drive shaft to the tool holder.
  • the roller bearing is arranged eccentrically on the drive shaft. During a rotation of the drive shaft, the roller bearing describes an eccentric movement around the drive axis.
  • the tool holder has at least one running surface which corresponds to the roller bearing and via which the roller bearing transmits the movement running eccentrically around the drive axis to the tool holder.
  • the tool holder has at least two running surfaces which are provided to convert a movement of the roller bearing into a pendulum movement of the tool holder about the bearing axis.
  • the Running surfaces integrally formed with the tool holder.
  • the treads run in particular at least substantially parallel to each other.
  • the roller bearing which is arranged eccentrically to the drive axis on the drive shaft, is provided during rotation of the drive shaft to apply a force to the running surfaces in alternation. The alternating loading of the running surfaces is intended to set the tool holder in a pendulum motion.
  • the tool holder can be put into an oscillating pendulum movement about the bearing axis in an alternative manner simply and/or efficiently. Due to the pendulum movement, tips of the tool holder describe a large path despite the small eccentricity. As a result, a high level of removal can be achieved during grinding at the edge of the tool holder.
  • a tool holder in particular a grinding plate for a machine tool, is proposed, which is not the subject of the invention, the tool holder having at least one holder for a radial bearing, which is provided for rotatably mounting the tool holder about a bearing axis, and has at least one running surface, which is intended to convert a movement of a roller bearing into a pendulum movement of the tool holder about the bearing axis.
  • a tool holder with advantageous design properties and/or advantageous operating properties can be provided.
  • an advantageous oscillating drive of the tool holder about the bearing axis can take place.
  • the tool holder can advantageously be driven in an oscillating manner about the bearing axis without oscillating elements.
  • a method for an oscillating drive of a tool holder is proposed, which is not the subject of the invention, in which a movement of a roller bearing arranged eccentrically to a drive axis on a drive shaft is converted into a pendulum movement of the tool holder about a bearing axis that is different from the drive axis.
  • the tool holder is mounted at least essentially in the middle so that it can rotate about the bearing axis.
  • the roller bearing describes in particular an eccentric movement around the drive shaft.
  • an eccentric movement of the roller bearing running around the drive axis is applied to the tool holder via at least one running surface, preferably via at least two running surfaces transmitted.
  • the running surfaces of the tool holder are alternately subjected to a force by a roller bearing arranged eccentrically to the drive axis on the drive shaft.
  • the tool holder is set in an oscillating pendulum movement around the bearing axis by the alternating loading of the running surfaces. As a result, the tool holder can be put into an oscillating pendulum movement about the bearing axis in an alternative manner simply and/or efficiently.
  • figure 1 shows a side view of a portable machine tool 10a.
  • figure 2 shows a lateral sectional view of the machine tool 10a figure 1 .
  • the machine tool 10a is in the figure 1 illustrated embodiment as a grinding machine, in particular as a delta grinder. However, it is also conceivable for the machine tool 10a to have a different configuration that appears sensible to a person skilled in the art.
  • the machine tool 10a is designed as an electrically driven machine tool 10a.
  • the machine tool 10a is battery operated. Alternatively or additionally, it is conceivable that the machine tool 10a can be operated with a cable.
  • the machine tool 10a has a battery receptacle 40a, which is arranged in a housing 42a of the machine tool 10a.
  • the housing 42a is designed in particular as a shell housing.
  • the battery holder 40a is arranged at least essentially in a handle 44a of the machine tool 10a.
  • the battery holder 40a is intended to hold a battery 46a for operating the machine tool 10a.
  • the battery 46a preferably has only one battery cell.
  • the rechargeable battery 46a has in particular a maximum volume of 0.9 l, preferably a maximum of 0.7 l and particularly preferably a maximum of 0.5 l.
  • the rechargeable battery 46a has an electrical output power of at least 50 W, preferably at least 75 W and particularly preferably at least 100 W.
  • the machine tool 10a has in particular a mass which, in particular including the battery 46a, is less than 700 g, preferably less than 600 g and particularly preferably less than 500 g.
  • the machine tool 10a has a rated power of at least 50 W, preferably at least 75 W and particularly preferably at least 100 W.
  • a relationship between a gripping surface 48a and a total surface area 50a of the machine tool 10a is between 0.4 and 0.9, but preferably between 0.5 and 0.75.
  • the machine tool 10a has a tool holder 12a that can be driven in an oscillating manner.
  • the tool holder 12a is designed as a grinding plate 38a.
  • the tool holder 12a is preferably provided for receiving an insert tool, in particular a sanding sheet, in a detachable manner by an operator.
  • figure 3 shows a plan view of an underside of the tool holder 12a.
  • the machine tool 10a has a drive unit 14a for driving the tool holder 12a.
  • the drive unit 14a has an electric motor 52a, which is provided to convert electrical energy provided by the battery 46a into kinetic energy, in particular rotational energy.
  • the drive unit 14a has a drive shaft 16a with a drive axis 18a intersecting the tool holder 12a for driving at least the tool holder 12a.
  • the drive shaft 16a is in particular at least partially formed by an armature shaft 54a of the electric motor 52a.
  • the machine tool 10a includes a bearing unit 20a for a movable bearing of the tool holder 12a about a bearing axis 22a of the bearing unit 20a, which intersects the tool holder 12a.
  • the storage unit 20a is provided in particular to mount the tool holder 12a movably relative to the housing 42a of the machine tool 10a.
  • the drive unit 14a is arranged within the housing 42a in front of the bearing unit 20a.
  • the drive axle 18a is designed differently from the bearing axle 22a.
  • the bearing axis 22a and the drive axis 18a run at least substantially spatially spaced from one another.
  • the bearing axis 22a runs in particular exclusively along at least one component of the bearing unit 20a.
  • the drive axis 18a runs in particular exclusively along at least one component of the drive unit 14a, in particular along the drive shaft 16a.
  • the drive axis 18a runs at least essentially along the drive shaft 16a, in particular along the armature shaft 54a of the electric motor 52a.
  • the drive axis 18a runs at least essentially parallel to the bearing axis 22a.
  • the bearing axis 22a intersects the tool holder 12a offset to the drive axis 18a.
  • the bearing axis 22a intersects the tool holder 12a at least essentially in the middle.
  • the bearing axis 22a and the drive axis 18a intersect the tool holder 12a at two spatially spaced intersection points 56a, 58a.
  • the drive axis 18a intersects the tool holder 12a at a point of intersection 56a, which lies on a circle 60a enclosing the point of intersection 58a between the bearing axis 22a and the tool holder 12a.
  • the drive axis 18a intersects the tool holder 12a at a point of intersection 56a between the circle 60a enclosing the point of intersection 58a between the bearing axis 22a and the tool holder 12a and a main extension direction 62a of the machine tool 10a.
  • the drive axis 18a intersects the tool holder 12a in front of the bearing axis 22a.
  • the bearing unit 20a has a bearing pin 24a which extends along the bearing axis 22a and on which the tool holder 12a is fastened so that it can rotate about the bearing axis 22a.
  • the bearing journal 24a is at least essentially cylindrical.
  • the bearing journal 24a is in particular formed at least in a non-positive manner with the housing 42a of the machine tool 10a.
  • the bearing journal 24a can be formed in one piece with the housing 42a of the machine tool 10a.
  • the bearing axis 22a extends in particular at least essentially along a main direction of extension of the bearing pin 24a.
  • the bearing unit 20a also includes a radial bearing 26a, which is provided for a rotatable mounting of the tool holder 12a about the bearing axis 22a.
  • the radial bearing 26a is arranged on the bearing journal 24a.
  • the radial bearing 26a is designed as a roller bearing, in particular as a ball bearing.
  • the radial bearing 26a can be connected to the bearing journal 24a by means of a press fit.
  • the tool holder 12a has a holder 34a, which is provided to hold the radial bearing 26a.
  • the drive unit 14a has a roller bearing 28a which is arranged eccentrically to the drive axis 18a on the drive shaft 16a.
  • the roller bearing 28a is designed in particular as a ball bearing.
  • the roller bearing 28a is intended to transmit a movement from the drive shaft 16a to the tool holder 12a.
  • the tool holder 12a has two running surfaces 30a, 32a, which are provided for a movement of the roller bearing 28a in a pendulum movement 36a of the tool holder 12a to convert the bearing axis 22a.
  • the running surfaces 30a, 32a are in particular formed in one piece with the tool holder 12a.
  • the running surfaces 30a, 32a run in particular at least essentially parallel to one another.
  • the roller bearing 28a describes an eccentric movement about the drive axis 18a during a rotation of the drive shaft 16a.
  • the roller bearing 28a which is arranged eccentrically to the drive axis 18a on the drive shaft 16a, is provided during a rotation of the drive shaft 16a to apply a force to the running surfaces 30a, 32a alternately.
  • the mutual loading of the running surfaces 30a, 32a is intended to put the tool holder 12a in a pendulum movement 36a about the bearing axis 22a. Due to the central mounting of the tool holder 12a and the eccentric drive, no oscillating elements are necessary.
  • the tool holder 12a is excited in an oscillating manner, as a result of which tips 64a of the tool holder 12a describe a large path despite a small eccentricity. As a result, a high level of removal can be achieved during grinding at the edge of the tool holder 12a.
  • FIG 4 shows a lateral sectional view of an alternative machine tool 10b.
  • the machine tool 10b is in the in figure 4 illustrated embodiment as a grinding machine, in particular as a delta grinder. However, it is also conceivable for the machine tool 10b to have a different configuration that appears sensible to a person skilled in the art.
  • the machine tool 10b is designed as an electrically driven machine tool 10b.
  • the machine tool 10b is battery operated. Alternatively or In addition, it is conceivable that the machine tool 10b can be operated with a cable.
  • the machine tool 10b has a battery receptacle 40b, which is arranged in a housing 42b of the machine tool 10b.
  • the housing 42b is designed in particular as a shell housing.
  • the battery holder 40b is arranged at least essentially in a handle 44b of the machine tool 10b.
  • the battery holder 40b is intended to hold a battery 46b for operating the machine tool 10a.
  • the machine tool 10b has a tool holder 12b that can be driven in an oscillating manner.
  • the tool holder 12b is designed as a grinding plate 38b.
  • the tool holder 12b is preferably provided for receiving an insert tool, in particular a sanding sheet, in a detachable manner by an operator.
  • figure 5 shows a plan view of an underside of the tool holder 12b.
  • the machine tool 10b has a drive unit 14b for driving the tool holder 12b.
  • the drive unit 14b has an electric motor 52b, which is provided to convert electrical energy provided by the rechargeable battery 46b into kinetic energy, in particular rotational energy.
  • the drive unit 14b has a drive shaft 16b with a drive axis 18b intersecting the tool holder 12b for driving at least the tool holder 12b.
  • the drive shaft 16b is in particular at least partially formed by an armature shaft 54b of the electric motor 52b.
  • the machine tool 10b includes a bearing unit 20b for a movable bearing of the tool holder 12b about a bearing axis 22b of the bearing unit 20b, which intersects the tool holder 12b.
  • the storage unit 20b is provided in particular to mount the tool holder 12b so that it can move relative to the housing 42b of the machine tool 10b.
  • the drive unit 14b is arranged within the housing 42b behind the bearing unit 20b.
  • the drive axle 18b is designed differently from the bearing axle 22b.
  • the bearing axis 22b and the drive axis 18b run at least substantially spatially spaced from each other.
  • the bearing axis 22b runs in particular exclusively along at least one component of the bearing unit 20b.
  • the drive axis 18b runs in particular exclusively along at least one component of the drive unit 14b, in particular along the drive shaft 16b.
  • the drive axle 18b runs at least essentially along the drive shaft 16b, in particular along the armature shaft 54b of the electric motor 52b.
  • the drive axis 18b runs at least essentially parallel to the bearing axis 22b.
  • the bearing axis 22b intersects the tool holder 12b offset to the drive axis 18b.
  • the bearing axis 22b intersects the tool holder 12b at least essentially in the middle.
  • the bearing axis 22b and the drive axis 18a intersect the tool holder 12b at two spatially spaced intersection points 56b, 58b.
  • the drive axis 18b intersects the tool holder 12b at a point of intersection 56b, which lies on a circle 60b enclosing the point of intersection 58b between the bearing axis 22b and the tool holder 12b.
  • the drive axis 18b intersects the tool holder 12a at a point of intersection 56b between the circle 60b enclosing the point of intersection 58a between the bearing axis 22b and the tool holder 12b and a main extension direction 62b of the machine tool 10b.
  • the drive axis 18b intersects the tool holder 12a behind the bearing axis 22b.
  • the bearing unit 20b has a bearing pin 24b which extends along the bearing axis 22b and to which the tool holder 12b is fastened so that it can rotate about the bearing axis 22b.
  • the bearing journal 24b is at least essentially cylindrical.
  • the bearing journal 24b is in particular formed at least in a non-positive manner with the housing 42b of the machine tool 10b.
  • the bearing journal 24b can be formed in one piece with the housing 42b of the machine tool 10b.
  • the bearing axis 22b extends in particular at least essentially along a main direction of extension of the bearing pin 24b.
  • the drive unit 14b has a roller bearing 28b arranged eccentrically to the drive axis 18b on the drive shaft 16b.
  • the roller bearing 28b is designed in particular as a ball bearing.
  • the roller bearing 28b is intended to transmit a movement from the drive shaft 16b to the tool holder 12b.
  • the tool holder 12b has two running surfaces 30b, 32b, which are provided to convert a movement of the roller bearing 28b into a pendulum movement 36b of the tool holder 12b about the bearing axis 22b.
  • the running surfaces 30b, 32b are in particular formed in one piece with the tool holder 12b.
  • the running surfaces 30b, 32b run in particular at least essentially parallel to one another.
  • the roller bearing 28b describes an eccentric movement about the drive axis 18b during a rotation of the drive shaft 16b.
  • the roller bearing 28b which is arranged eccentrically to the drive axis 18b on the drive shaft 16b, is provided during rotation of the drive shaft 16b to apply a force alternately to the running surfaces 30b, 32b.
  • the alternating loading of the running surfaces 30b, 32b is intended to put the tool holder 12b in a pendulum movement 36b about the bearing axis 22b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (7)

  1. Machine-outil portative, notamment meuleuse, avec au moins un logement d'outil (12a ; 12b) pouvant être entraîné de manière oscillante, avec au moins une unité d'entraînement (14a ; 14b), qui présente au moins un arbre d'entraînement (16a ; 16b) avec au moins un axe d'entraînement qui coupe le logement d'outil (12a ; 12b) pour un entraînement d'au moins le logement d'outil (12a ; 12b), et avec au moins une unité de palier (20a ; 20b) pour un montage mobile du logement d'outil (12a ; 12b) autour d'un axe de palier (22a ; 22b) de l'unité de palier (20a ; 20b), qui coupe le logement d'outil (12a ; 12b), l'axe d'entraînement (18a ; 18b) étant configuré différemment de l'axe de palier (22a ; 22b) et l'unité d'entraînement (14a ; 14b) présentant un palier à roulement (28a ; 28b) agencé sur l'arbre d'entraînement (16a ; 16b) de manière excentrée par rapport à l'axe d'entraînement (18a ; 18b), caractérisée en ce que le logement d'outil (12a ; 12b) présente au moins des surfaces de roulement (30a, 32a ; 30b, 32b) qui sont soumises en alternance à une force du palier à roulement (28a ; 28b) et qui sont prévues pour transformer un mouvement du palier à roulement (28a ; 28b) en un mouvement pendulaire (36a ; 36b) du logement d'outil (12a ; 12b) autour de l'axe de palier (22a ; 22b).
  2. Machine-outil selon la revendication 1, caractérisée en ce que l'axe de palier (22a ; 22b) coupe le logement d'outil (12a ; 12b) en décalage par rapport à l'axe d'entraînement (18a ; 18b).
  3. Machine-outil selon la revendication 1 ou 2, caractérisée en ce que l'axe d'entraînement (18a ; 18b) s'étend en décalage au moins essentiellement parallèlement à l'axe de palier (22a ; 22b).
  4. Machine-outil selon l'une quelconque des revendications précédentes, caractérisée en ce que l'axe de palier (22a ; 22b) coupe au moins essentiellement au centre le logement d'outil (12a ; 12b).
  5. Machine-outil selon l'une quelconque des revendications précédentes, caractérisée en ce que l'unité de palier (20a ; 20b) présente au moins un tourillon (24a ; 24b) s'étendant le long de l'axe de palier (22a ; 22b), sur lequel le logement d'outil (12a ; 12b) est fixé de manière rotative autour de l'axe de palier (22a ; 22b).
  6. Machine-outil selon l'une quelconque des revendications précédentes, caractérisée en ce que l'unité de palier (20a ; 20b) présente au moins un palier radial (26a ; 26b) qui est prévu pour un montage rotatif du logement d'outil (12a ; 12b) autour de l'axe de palier (22a ; 22b).
  7. Machine-outil selon l'une quelconque des revendications précédentes, caractérisée en ce que l'unité d'entraînement (14a ; 14b) présente un palier à roulement (28a ; 28b) agencé sur l'arbre d'entraînement (16a ; 16b) de manière excentrée par rapport à l'axe d'entraînement (18a ; 18b), lequel est prévu pour transmettre un mouvement de l'arbre d'entraînement (16a ; 16b) au logement d'outil (12a ; 12b).
EP17198177.2A 2016-11-28 2017-10-25 Machine-outil portative Active EP3330044B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016223508.7A DE102016223508A1 (de) 2016-11-28 2016-11-28 Tragbare Werkzeugmaschine

Publications (2)

Publication Number Publication Date
EP3330044A1 EP3330044A1 (fr) 2018-06-06
EP3330044B1 true EP3330044B1 (fr) 2023-08-16

Family

ID=60182430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17198177.2A Active EP3330044B1 (fr) 2016-11-28 2017-10-25 Machine-outil portative

Country Status (3)

Country Link
EP (1) EP3330044B1 (fr)
CN (1) CN108115621B (fr)
DE (1) DE102016223508A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3902656A1 (fr) * 2018-12-27 2021-11-03 Robert Bosch GmbH Machine-outil portative

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19826340A1 (de) * 1998-06-12 1999-12-16 Bosch Gmbh Robert Schwingschleifer
DE102007018464A1 (de) * 2007-04-19 2008-10-23 Robert Bosch Gmbh Motorisch angetriebene Werkzeugmaschine
EP2377647B1 (fr) * 2010-04-16 2012-12-12 C. & E. Fein GmbH Outil manuel
WO2014023229A1 (fr) * 2012-08-07 2014-02-13 苏州宝时得电动工具有限公司 Outil de meulage électrique

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0634929Y2 (ja) * 1988-09-01 1994-09-14 ヤスハラ株式会社 研磨装置
DE4233728A1 (de) * 1992-10-07 1994-04-14 Bosch Gmbh Robert Exzentertellerschleifer
DE19546310A1 (de) * 1995-12-12 1997-06-19 Troeger Johannes Dr Ing Habil Vibrationsgeminderter Linearschwingschleifer
DE102007018465A1 (de) * 2007-04-19 2008-10-23 Robert Bosch Gmbh Motorisch angetriebene Werkzeugmaschine
JP5363870B2 (ja) * 2009-05-14 2013-12-11 日東工器株式会社 偏芯回転運動を伴う研磨装置
DE102013100085A1 (de) * 2013-01-07 2014-07-10 C. & E. Fein Gmbh Oszillierend angetriebene Werkzeugmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19826340A1 (de) * 1998-06-12 1999-12-16 Bosch Gmbh Robert Schwingschleifer
DE102007018464A1 (de) * 2007-04-19 2008-10-23 Robert Bosch Gmbh Motorisch angetriebene Werkzeugmaschine
EP2377647B1 (fr) * 2010-04-16 2012-12-12 C. & E. Fein GmbH Outil manuel
WO2014023229A1 (fr) * 2012-08-07 2014-02-13 苏州宝时得电动工具有限公司 Outil de meulage électrique

Also Published As

Publication number Publication date
DE102016223508A1 (de) 2018-05-30
EP3330044A1 (fr) 2018-06-06
CN108115621A (zh) 2018-06-05
CN108115621B (zh) 2022-09-20

Similar Documents

Publication Publication Date Title
EP2629933B1 (fr) Outil de travail notamment outil électrique
EP2139647B1 (fr) Machine-outil entraînée par un moteur
EP2139654B1 (fr) Machine-outil entraînée par un moteur
DE3038489C2 (de) Handwerkzeugmaschine mit einem rotierend angetriebenen Werkzeug
EP2242613B1 (fr) Machine-outil entraînée par un moteur
EP4292760A3 (fr) Machine-outil à main
EP2669044B1 (fr) Système comprenant une machine-outil manuelle et un outil à plaque
DE19820873A1 (de) Elektrohandwerkzeugmaschine, insbesondere Handschleifmaschine
WO2012126661A1 (fr) Dispositif de serrage d'outils
DE10059975A1 (de) Handwerkzeugmaschine
EP3330044B1 (fr) Machine-outil portative
WO2016096244A1 (fr) Système de machine-outil
WO2012013389A1 (fr) Outil amovible
DE102008043375B4 (de) Handgeführte Hubsägemaschine
EP2377647B1 (fr) Outil manuel
DE102012216000A1 (de) Einsatzwerkzeugsystem
EP2998073B1 (fr) Machine-outil portative fonctionnant sur batterie ayant au moins une partie de carter moteur
DE102012215950A1 (de) Wechselwerkzeug, Werkzeughalter, Handwerkzeug und Werkzeugsystem
DE4447162B4 (de) Vorrichtung zur Bearbeitung von Oberflächen
WO2019115082A1 (fr) Machine-outil portative
EP2890524B1 (fr) Systeme machine-outil
DE102012224444A1 (de) Werkzeugmaschinengetriebevorrichtung
DE19700599C1 (de) Messerschärfer
DE342484C (de) Handwerkzeug mit Motor
DE102014200401A1 (de) Schleifwerkzeug mit einem Schleifkörper mit innenliegendem Antrieb

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20181206

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20190916

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROBERT BOSCH GMBH

TPAC Observations filed by third parties

Free format text: ORIGINAL CODE: EPIDOSNTIPA

RIC1 Information provided on ipc code assigned before grant

Ipc: B24B 47/12 20060101ALI20230208BHEP

Ipc: B25F 5/00 20060101ALI20230208BHEP

Ipc: B24B 23/04 20060101AFI20230208BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230420

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230509

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502017015223

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20230816

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231117

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231025

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231216

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231218

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231116

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231216

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231117

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20231023

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20231218

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230816

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231025