EP3983185A1 - Werkzeugvorrichtung und verfahren - Google Patents
Werkzeugvorrichtung und verfahrenInfo
- Publication number
- EP3983185A1 EP3983185A1 EP20723313.1A EP20723313A EP3983185A1 EP 3983185 A1 EP3983185 A1 EP 3983185A1 EP 20723313 A EP20723313 A EP 20723313A EP 3983185 A1 EP3983185 A1 EP 3983185A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- braking
- brake
- tool device
- brake body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/29—Details; Component parts; Accessories
- B27B5/38—Devices for braking the circular saw blade or the saw spindle; Devices for damping vibrations of the circular saw blade, e.g. silencing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
-
- 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
- B24B23/028—Angle tools
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- 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
- B24B47/26—Accessories, e.g. stops
-
- 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
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
- B27G19/008—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws with sensing of human contact or proximity with the blade
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G21/00—Safety guards or devices specially designed for other wood-working machines auxiliary devices facilitating proper operation of said wood-working machines
Definitions
- the invention relates to a tool device with a shaft.
- the tool device preferably comprises a drivable tool which is coupled to the shaft.
- EP 1 234 285 B1 describes a table saw with a
- Brake mechanism comprising at least one pawl that is used to stop the rotating saw blade in engagement with the
- An object of the invention is to provide a
- the object is achieved by a tool device according to claim 1.
- the tool device comprises a
- Braking device with at least one in particular as
- Brake disc executed brake body and a
- the tool device is designed, in the context of a braking process, to change the braking device from a release state to a supply state
- Release status rotates with the shaft.
- the at least one Brake body and the shaft provided and converted the relative rotational movement into an axial movement of the brake body towards the brake section.
- the at least one brake body is in contact with the braking section and exerts a braking force on the shaft, so that the shaft is braked.
- the tool is expediently braked by braking the shaft.
- Tool device the tool and / or the at least one brake body expediently undamaged and / or still usable even after braking of the tool, so that no replacement is required for further operation.
- the tool device described can be operated with less effort.
- the invention also relates to a method for braking a shaft of a tool device, comprising the step:
- a brake device which has at least one brake body, in particular designed as a brake disc, and a brake section, from a release state in which the at least one brake body is coupled non-rotatably to the shaft, so that the at least one brake body rotates with the shaft, via a feed state, in which the at least one brake body one through a relative
- Rotary movement between the at least one brake body and the shaft performed axial movement towards the brake section, in a braking state in which the at least one brake body is in contact with the brake section and exerts a braking force on the shaft so that the shaft is braked.
- the method is carried out with a tool device described here.
- Figure 1 is a schematic representation of a
- FIG. 2 a braking device in a released state
- FIG. 3 a sectional view of the braking device
- FIG. 4 the braking device in a supply state
- Figure 5 shows the braking device in a braking state
- Figure 6 shows a reset mechanism in an inactive
- the x-direction, y-direction and z-direction are aligned orthogonally to one another.
- the x-direction and y- Direction can also be used as the horizontal direction and the z direction as
- the mentioned directions “radial direction” and “axial direction” are to be understood in particular in relation to the longitudinal axis of the shaft 2.
- the longitudinal axis or axial direction of the shaft 2 runs, for example, parallel to the x direction.
- axial movement means, in particular, a movement parallel to the longitudinal axis of the shaft 2.
- FIG. 1 shows a tool device 10 with a drivable tool 1.
- the tool device 10 comprises a shaft 2 which is coupled to the tool 1 and via which the tool 1 can expediently be driven.
- the tool device 10 comprises a braking device 12, which is shown by way of example in FIGS. 2 to 5.
- the braking device 12 comprises at least one brake body 3.
- the at least one brake body 3 is expediently designed as a brake disk.
- the tool device 10 comprises a shaft 2 which is coupled to the tool 1 and via which the tool 1 can expediently be driven.
- the tool device 10 comprises a braking device 12, which is shown by way of example in FIGS. 2 to 5.
- the braking device 12 comprises at least one brake body 3.
- the at least one brake body 3 is expediently designed as a brake disk.
- the at least one brake body 3 is expediently designed as a brake disk.
- Brake device 12 two brake bodies 3 - a first
- the tool device 10 further comprises a
- Brake section 14 The example is located
- Brake section 14 in the axial direction of the shaft 2 between the two brake bodies 3A, 3B.
- the shaft 2 is preferably rotatably mounted on the braking section 14.
- the tool device 10 is designed, in the context of a braking process, the braking device 12 by a
- the release status is shown by way of example in FIGS. 2 and 3. At least one is in the enabled state
- Brake body 3 coupled to shaft 2 in a rotationally fixed manner, so that the at least one brake body 3 rotates with shaft 2 in the released state (about the longitudinal axis of the shaft).
- the non-rotatable coupling is in particular such that the at least one brake body 3, preferably both brake bodies 3A, 3B, in a state in which the shaft 2 rotates, rotates with the shaft 2 (at the same rotational speed) and in a state in which the shaft does not rotate, the brake body 3, preferably both brake bodies 3A, 3B, also does not rotate.
- both brake bodies 3A, 3B are coupled in a rotationally fixed manner to the shaft 2 and rotate with the shaft 2 when the shaft 2 rotates.
- Coupling mechanism to provide the non-rotatable
- the coupling mechanism is designed as an example, the rotationally fixed coupling by
- the coupling mechanism expediently comprises at least one coupling section 15, for example a nut, which is fixed against rotation on the shaft 2
- the shaft 2 can expediently rotate freely and is in particular not of the
- Braking device 12 braked.
- the bracket 12 Braking device 12 braked.
- Braking device 12 enters the release state in normal operation - that is, in particular when shaft 2 and the shaft rotate
- Tool 1 and, for example, when machining workpiece 11 with tool 1.
- the tool device 10 is designed that
- FIG. 4 shows the braking device 12 in the delivery state.
- the shaft 2 preferably has a higher rotational speed than the brake body 3 during the relative rotational movement.
- the relative rotational movement is in particular thereby
- the at least one brake body 3 preferably both brake bodies 3A, 3B, is rotatively braked relative to the shaft 2. This is done, for example, in that an actuation section 16 with the at least one
- Brake body 3 is brought into contact. By braking the at least one brake body 3, the non-rotatable coupling between the at least one brake body 3 and the shaft 2 is released, so that the at least one brake body 3 is no longer rotatably coupled to the shaft 2 and rotates relative to the shaft 2.
- the shaft 2 rotates in Delivery state faster than the at least one brake body 3, in particular faster than both brake bodies 3A, 3B.
- Brake body 3 brakes to the relative rotational movement
- the tool device 10 can also provide
- the axial movement 31 is provided by a thread 4 which is arranged in particular on the shaft 2 and with which the at least one brake body 3 is in engagement.
- the thread 4 is expediently the relative
- Rotary movement between the at least one brake body 3 and the shaft 2 is converted into a relative axial movement between the at least one brake body 3 and the shaft 2.
- FIG. 5 shows the braking device 12 in the braking state.
- the at least one brake body has 3,
- the at least one brake body 3 is in contact with the brake section 14 and exerts a braking force on the shaft 2, so that the shaft 2 and thereby also the
- Tool 1 can be braked.
- the contact between the at least one brake body 3 and the brake section 14 creates a (further) relative
- the shaft 2 can only move with continued axial movement of the Turn the brake body 3 further relative to the brake body 3.
- Brake section 14 the rotational movement of the shaft 2 also stopped relative to the brake section 14.
- the braking section 14 is expediently a stationary part of the tool device 10. Consequently, the shaft 2 and The tool 1 is expediently also stopped relative to a stationary part of the tool device 10.
- the braking device 12 is designed in particular to be self-locking and / or self-reinforcing. As soon as a brake body 3A, 3B makes contact with the brake section 14, the braking effect on the shaft 2 is increased with each further rotation of the shaft 2. In particular, the brake bodies 3A, 3B become stronger with each further rotation of the shaft 2 against the
- Tool device 10 as a hand-held machine
- the tool device 10 is preferably designed as a chop saw, plunge-cut saw, pendulum hood saw, band saw, jigsaw, router and / or angle grinder.
- the tool device 10 is in particular a power tool.
- the tool device 10 comprises, for example, the tool 1, the shaft 2, a drive unit 5, an actuator unit 6, and a control unit 7
- Tool device 10 expediently has a support structure 8 and / or a support surface 9.
- the support structure 8 is exemplarily designed as a housing. In the support structure 8 are expediently
- Control unit 7 housed.
- the support surface 9 is exemplarily arranged on the top of the support structure 8.
- the support surface 9 is used for
- Support surface 9 represents an x-y plane. As an example, the tool 1 protrudes from the support surface 9, in particular in the z direction.
- the drive unit 5 is designed, for example, as a rotary drive, in particular as an electric rotary drive.
- the drive unit 5 serves to drive the tool 1, in particular to set the tool 1 in rotation, preferably in a clockwise direction.
- the tool 1 is coupled to the drive unit 5 via the shaft 2.
- the drive unit 5 is designed to drive the shaft 2, in particular to set it in rotation, which in turn drives the tool 1.
- Tool 1 is an example non-rotatably connected to the shaft 2 so that the tool 1 rotates with the rotating shaft 2.
- the shaft 2 is in particular a shaft of the drive train of the tool device 10.
- the shaft 2 and the tool 1 are opposite the support structure 8
- the shaft 2 is aligned with its longitudinal axis parallel to the x direction.
- Wave 2 has one as an example
- the axis of rotation of the tool 1 is expediently aligned parallel to the x direction.
- the shaft 2 and the tool 1 are aligned coaxially to one another.
- the actuator unit 6 is expediently used to control the actuator unit 6
- the control unit 7 is expediently designed, the drive unit 5 a drive unit control signal
- the control unit 7 is
- the control unit 7 is
- the operating state is in particular an emergency state.
- Emergency state is in particular a potentially dangerous situation for a user in which the
- the control unit 7 is expediently designed, the emergency state on the basis of a detected contact between the tool 1 and the
- the tool device 10, in particular the control unit 7, is preferably designed to supply an electrical detection signal to the tool 1 and to detect the emergency state on the basis of a change in the detection signal.
- the tool device 10 is expediently
- control unit 7 is designed to supply the tool 1 with the electrical detection signal by capacitive coupling.
- the tool device 10, in particular the control unit 7, is expediently designed to detect the emergency state, in particular the contact between the tool 1 and the human body, on the basis of a capacitive change. More details on how to capture the
- the control unit 7 is expediently also designed to detect a kickback as the emergency state.
- doctor is particularly intended to mean a state in which, during the machining of the workpiece 11 by the
- Tool device 10 a sudden and unexpected force occurs between the tool device 10 and the workpiece 11, by means of which the tool device 10 and / or the workpiece 11 is set in motion.
- the tool device 10 expediently comprises a sensor device, for example an acceleration sensor and / or a force sensor, in particular one
- Strain gauge arrangement for recording the kickback is described, for example, in WO 2019/020307 A1.
- the tool device 10 is expediently designed to bring the tool 1 to a standstill within 5 ms or less by performing the braking process
- the braking device 12 With reference to FIGS. 2 to 5, the braking device 12 will be discussed in greater detail below. Appropriately, the braking device 12 is in the
- the braking device 12 is in particular a brake that is actively switched (preferably via the control unit 7 and / or the actuator unit 6).
- the braking device 12 is particularly reversible so that it can be switched back from the braking state to the release state (and from there expediently back into the braking state), preferably without having to replace a component of the braking device 12.
- the braking device 12 comprises, for example, the shaft 2, the braking bodies 3, the braking section 14, the coupling sections 15 and the actuation section 16.
- the shaft 2 is aligned with its longitudinal axis parallel to the x-direction.
- the shaft 2 runs through the brake body 3, the coupling sections 15 and expediently also through the brake section 14.
- the Brake body 3 are arranged distributed in the x direction.
- the brake bodies 3 are in particular aligned coaxially to the shaft 2 and coaxially to one another.
- the braking section 14 is arranged between the braking bodies 3 in the x direction.
- Brake section 14 and the brake bodies 3 are arranged together in the x direction between the coupling sections 15.
- Coupling sections 15 do not overlap one another in the x direction.
- the actuation section 16 is in particular shown in FIG.
- the coupling sections 15 and the brake body 3 are coupled to one another in a rotationally test.
- the brake bodies 3 are frictionally and / or positively connected to the shaft 2 in the released state.
- the shaft 2 is in the release state
- Brake body 3 not rotatably coupled to one another.
- the shaft 2 can rotate relative to the brake bodies 3.
- Brake body 3 in particular both brake bodies 3A, 3B, in the feed state in the same direction of rotation.
- the shaft 2 is still freely rotatable with respect to the braking section 14 in the feed state.
- the brake bodies 3 are not in contact with the braking section 14 in the feed state.
- the actuation section 16 is expediently in contact with the brake bodies 3 in the released state.
- the brake bodies 3 and the shaft 2 are coupled to the brake section 14 in a rotationally fixed manner.
- the brake bodies 3 are in contact with the braking section 14 in the braking state.
- the brake bodies 3 will be discussed in greater detail below.
- first brake body 3A there are two brake bodies 3 - a first brake body 3A and a second brake body 3B.
- only one brake body 3 is present; i.e. the first brake body 3A or the second
- Brake body 3B is not present in the alternative embodiment.
- the two brake bodies 3A, 3B are expediently designed to correspond to one another. Explanations relating to a brake body 3 apply in particular to both brake bodies 3A, 3B. Furthermore, explanations apply that relate to the first brake body 3A,
- the brake bodies 3A, 3B are exemplarily designed as brake disks.
- the first brake body 3A can also be used as the first brake disc and the second brake body 3B as the second
- Brake disc are referred to.
- the brake bodies 3 are expediently separate parts from one another.
- the two brake bodies 3A, 3B run separately from one another on the shaft 2.
- Each brake body 3A, 3B comprises one example
- the end face facing the braking section 14 is oriented perpendicular to the x direction.
- the respective contact area 17 of each brake body 3A, 3B lies on the
- Brake bodies 3A, 3B are aligned facing each other by way of example.
- Each brake body 3A, 3B also includes, for example, a respective cylinder section 19 which is aligned coaxially with the shaft 2.
- Each cylinder section 19 is on the end face facing away from the brake section 14 of the respective
- Each brake body 3A, 3B is with its end facing away from the brake section 14, in particular with the
- Cylinder section 19 in contact with a respective one
- Coupling section 15 This expediently provides the rotationally fixed coupling to the shaft 2,
- the brake body threads 22A, 22B are expediently designed as internal threads. Each brake body thread 22A, 22B is expediently arranged in an opening arranged centrally in the respective brake body 3A, 3B, in particular centrally in the respective disk section 18 and / or cylinder section 19. Wave 2 will be discussed in more detail below:
- the shaft 2 is exemplarily designed as a drive spindle.
- the shaft 2 is preferably designed as a threaded shaft.
- the shaft 2 is expediently torque-resistant with a
- the shaft 2 has the first thread 4A by way of example.
- the first thread 4A is in engagement with the first brake body 3A, in particular with the first brake body thread 22A.
- Thread 4B The second thread 4B is offset from the first thread 4A in the x direction.
- the second thread 4B is in engagement with the second brake body 3B, in particular with the second brake body thread 22B.
- the first thread 4A differs in its direction of rotation from the second thread 4B.
- the direction of rotation of the first thread 4A is preferably opposite to the direction of rotation of the second thread 4B.
- the first thread 4A is expediently a right-hand thread and the second thread 4B is a left-hand thread.
- the first thread 4A is a left-hand thread and the second thread 4B is a right-hand thread.
- the braking device 12 comprises the two threads 4A, 4B. According to an alternative
- the brake device comprises only one thread 4A or 4B.
- the tool device 10 is designed to convert the relative rotational movement 30 between each brake body 3A, 3B and the shaft 2 into the axial movement 31A, 31B of each brake body 3A, 3B to implement the braking element 14.
- Tool device 10 is designed in particular in
- the two brake bodies 3A, 3B are fed by the two brake bodies 3A, 3B.
- the brake bodies 3A, 3B expediently move towards one another when the axial movements 31A, 31B are carried out.
- the tool device 10 has a transfer mechanism which is exemplified by the
- Thread 4A, 4B and the brake body thread 22A, 22B is formed. Through the engagement of the first thread 4A with the first brake body thread 22A, the first brake body 3A with a relative rotational movement between the first
- Brake body 3A and the shaft 2 are displaced in the first axial movement 31A towards the brake section 14.
- the first axial movement 31A towards the brake section 14.
- Axial movement 31A runs antiparallel to the x direction, for example. Due to the engagement of the second thread 4B with the second brake body thread 22B, the second brake body 3B is set in a second axial movement 31B towards the brake section 14 during a relative rotational movement between the second brake body 3B and the shaft 2.
- Axial movement 33B runs, for example, parallel to the x direction.
- the braking section 14 will be discussed next.
- the braking section 14 is part of the exemplary embodiment
- Support structure 8 or is non-rotatably connected to the support structure 8, in particular to that designed as a housing
- the braking section 14 is in particular a stationary section.
- the braking section 14 expediently does not rotate with the shaft 2.
- Brake section 24 is designed to have a force and / or torque acting on shaft 2 in the braking state
- the braking section 14 has, for example, a plate-shaped basic shape.
- the brake section 14 is designed in particular as a brake block and / or bearing block.
- the side of the braking section 14 with the largest surface area is aligned, for example, normal to the x-direction.
- the braking section 14 has a first braking surface 21A which faces the first braking body 3A and is in contact with the first braking body 3A in the braking state.
- the braking section 14 furthermore has a second braking surface 21B which faces the second braking body 3B and is in contact with the second braking body 3B in the braking state.
- the first braking surface 21A and the second braking surface 22B are oriented in opposite directions.
- the braking section 14 has, for example, an opening through which the shaft 2 is guided.
- the braking section 14 expediently comprises a rotary bearing 24, in particular a roller bearing, which supports the shaft 2.
- the coupling sections 15 will be discussed in greater detail below.
- the coupling sections 15 serve to provide the rotationally fixed coupling between the brake bodies 3A, 3B and the shaft 2 in the released state.
- the coupling sections 15 are designed in particular to provide the non-rotatable coupling as a releasable non-rotatable coupling.
- Two coupling sections 15 are present as an example. In an alternative embodiment, in particular one
- the coupling sections 15 are each designed as a nut and screwed onto the shaft 2. According to an alternative embodiment, the coupling sections 15 are part of the shaft 2.
- Each coupling section 15 is in particular with its respective end face in contact with a respective one
- Brake body 3A, 3B Appropriate is everyone
- Coupling section 15 is pressed against a respective brake body 3A, 3B in particular in the axial direction.
- the actuation section 16 will be discussed in greater detail below.
- the actuation section 16 serves to control the brake body 3A
- the actuation section 16 serves to brake the brake bodies 3A, 3B rotatively by contact (while the shaft 2 expediently continues to rotate).
- the actuation section 16 has, for example, two actuation sections 32 - a first actuation section 32A for actuating the first brake body 3A and a second actuation section 32B for actuation of the second brake body 3B.
- the actuation section 16 is exemplarily U-shaped, the actuation sections 32 being formed by respective legs.
- the actuation section 16 is expediently activated by the actuator unit 6 towards the
- Brake bodies 3 offset in order to actuate the brake body 3.
- the actuation movement includes in particular one
- the actuation movement is in particular a movement of the actuation section 16 relative to the brake bodies 3.
- the actuator unit 6 expediently comprises one
- the actuator unit 6 expediently comprises a lifting magnet and / or a
- the actuator unit 6 comprises a pneumatic cylinder in order to set the actuation section 16 into the actuation movement. Furthermore, the actuator unit 6 can be used to offset the
- Actuating section 16 in the actuating movement include a differently designed actuator, in particular a piezoelectric actuator, an electromagnetic actuator, a shape memory alloy actuator (SMA actuator), a
- Electroactive polymer actuator EAP actuator
- MSN actuator magnetic shape memory actuator
- pneumatic actuator a hydraulic actuator
- hydraulic actuator a pyroactuator
- mechanical actuator an electrostrictive actuator and / or a thermal actuator.
- the tool device 10 is preferably designed to move the actuation section 16 into the actuation movement
- the feeding status changes.
- the tool device 10 is expediently designed, the actuation section 16 based on the detected
- Tool device 10 can also be designed in such a way that braking device 12 is triggered in a different manner - that is, not by an actuator unit.
- braking device 12 is triggered in a different manner - that is, not by an actuator unit.
- Braking device 12 are torque-actuated. That can
- Brake body 3 is created between the shaft 2 and the
- Brake body 3 a moment that leads to a loosening of the
- the tool device 10 also includes, for example, a bearing section 25 on which the shaft 2 is mounted,
- the shaft 2 is supported with one of its ends on the bearing section 25.
- the bearing section 25 comprises a pivot bearing 26, for example a roller bearing.
- the tool 1 is expediently from the drive unit
- the workpiece 11 is machined by the driven tool 1. During machining, there is contact between the tool 1 and the body of the user.
- the control unit 7 detects this contact as an emergency state and then triggers the braking device 12.
- Actuating movement in order to actuate the brake body 3 and thereby move the brake device 12 from the release state into the delivery state. This results in a relative rotational movement between the brake bodies 3 and the shaft 2, which is converted into axial movements 31A, 31B of the brake bodies 3 up to the brake section 14. As an example, the brake bodies 3 move towards one another when the axial movements 31A, 32B are carried out.
- the braking device 12 is located in
- the braking device 12 is expediently set back into the release state, in particular automatically by the tool device 10 and / or manual actuation.
- the tool 1 is driven again by the drive unit 5.
- the workpiece 11 or another workpiece is then machined by the tool 1.
- the braking device 12 is expediently set back into the release state, in particular automatically by the tool device 10 and / or manual actuation.
- the tool 1 is driven again by the drive unit 5.
- the workpiece 11 or another workpiece is then machined by the tool 1.
- the braking device 12 is expediently set back into the release state, in particular automatically by the tool device 10 and / or manual actuation.
- the tool 1 is driven again by the drive unit 5.
- Tool device 10 designed to put the braking device 12 back into the release state, in particular by means of the actuator unit 6 and / or another
- the tool device 10 is preferably designed to set the braking device 12 back into the release state in response to a reset command.
- the reset command is expediently by a
- an input device for example via an input device, in particular a button.
- FIGS. 6 and 7 show a reset mechanism 40 which is expediently part of the tool device 10.
- the reset mechanism 40 serves to put the braking device 12 back into the release state.
- the reset mechanism comprises a reset element 41, for example a lever, with a reset element - contact section 42, which in particular by a linear movement with a brake body contact section of the
- Brake body 3 for example the cylinder section 19, can be brought into contact and expediently
- Reset mechanism 40 in an inactive state in which the reset contact portion 42 does not contact the brake body contact portion.
- FIG 7 is the figure
- Reset mechanism 40 in an active state in which the reset contact section 42 contacts the brake body contact section.
- the tool device 10 is designed such that the braking device is mechanically coupled to the shaft 2 by manual actuation of the tool 1 and / or the shaft 2 and / or one
- Control element for example a lever, can be put back into the release state.
- the tool device 10 is designed in such a way that the braking device can be manually actuated
- the tool device can expediently also be used as an angle device, for example as an angle grinder,
- the tool device expediently comprises a first shaft, for example a drive shaft, and a second shaft
- the first shaft and the second shaft are preferably coupled to one another via a deflection joint.
- the first shaft or the second shaft is expediently the aforementioned shaft, which is braked by means of the braking device.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
- Sawing (AREA)
- Portable Power Tools In General (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019208438.9A DE102019208438A1 (de) | 2019-06-11 | 2019-06-11 | Werkzeugvorrichtung und Verfahren |
| PCT/EP2020/061609 WO2020249297A1 (de) | 2019-06-11 | 2020-04-27 | Werkzeugvorrichtung und verfahren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3983185A1 true EP3983185A1 (de) | 2022-04-20 |
Family
ID=70482612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20723313.1A Withdrawn EP3983185A1 (de) | 2019-06-11 | 2020-04-27 | Werkzeugvorrichtung und verfahren |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20220234240A1 (de) |
| EP (1) | EP3983185A1 (de) |
| JP (1) | JP7492539B2 (de) |
| CN (1) | CN114206533B (de) |
| DE (1) | DE102019208438A1 (de) |
| WO (1) | WO2020249297A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022208076A1 (de) * | 2022-08-03 | 2024-02-08 | Festool Gmbh | Verfahren zum Betrieb eines Aktuators einer Notbremseinheit für ein motorisch angetriebenes Werkzeug, Ansteuerschaltung, Aktuatoreinheit und Notbremseinheit |
| WO2024155197A1 (en) * | 2023-01-18 | 2024-07-25 | Kando Innovation Limited | Apparatus for stopping a cutting disc |
| CN119057563B (zh) * | 2024-09-04 | 2025-10-10 | 北京工业大学 | 一种惯性式静动态力复合加载系统 |
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| DE918063C (de) * | 1950-10-20 | 1954-09-16 | Demag Zug Gmbh | Zusaetzliche Bremse fuer von Motoren mit Eigenbremsung angetriebene Maschinen |
| CH440865A (de) * | 1966-11-15 | 1967-07-31 | Frydmann Eduard | Bremsvorrichtung zur belastungsabhängigen Abbremsung eines getriebenen, rotierenden Organs |
| DE19510291C2 (de) * | 1995-03-22 | 1998-09-24 | Bosch Gmbh Robert | Handwerkzeugmaschine mit Bremseinrichtung |
| EP1234285B1 (de) * | 1999-10-01 | 2016-06-15 | Sd3, Llc | Tischsäge mit Schutzsystem |
| US20030015253A1 (en) * | 2001-07-18 | 2003-01-23 | Gass Stephen F. | Router with improved safety system |
| GB2376280B (en) * | 2001-06-05 | 2005-01-19 | Dronningborg Ind As | Clutch and brake for rotating body |
| DE10214419A1 (de) | 2002-03-30 | 2003-10-30 | Ennepetaler Schneid Maehtech | Arbeitsgerät mit mindestens einem über einen Motor antreibbaren Werkzeug und einer das Werkzeug stillsetzenden Bremse |
| US7980325B2 (en) * | 2004-01-16 | 2011-07-19 | Credo Technology Corporation | Rotating shaft locking mechanism |
| JP4566806B2 (ja) * | 2005-04-18 | 2010-10-20 | 株式会社マキタ | 動力工具 |
| JP2007276078A (ja) | 2006-04-11 | 2007-10-25 | Makita Corp | 動力工具 |
| CN101204804B (zh) * | 2006-12-21 | 2011-09-07 | 苏州宝时得电动工具有限公司 | 动力工具 |
| DE102008000891A1 (de) * | 2008-03-31 | 2009-10-01 | Robert Bosch Gmbh | Schutzsystem für Werkzeugmaschinen |
| DE102008054694A1 (de) * | 2008-12-16 | 2010-06-17 | Robert Bosch Gmbh | Werkzeugnotbremsvorrichtung |
| DE102009001014A1 (de) * | 2009-02-19 | 2010-08-26 | Zf Friedrichshafen Ag | Elektromechanische Einrichtung zum Antreiben und/oder Bremsen einer Welle |
| DE112010005800T5 (de) * | 2010-08-11 | 2013-06-13 | Bosch Power Tools (China) Co., Ltd. | Elektrohandwerkzeug mit verbesserter Bremsanordnung |
| DE102011110131B4 (de) * | 2011-08-15 | 2019-05-02 | Leistritz Produktionstechnik Gmbh | Bearbeitungsvorrichtung, insbesondere Wirbelvorrichtung |
| DE102013200867A1 (de) * | 2013-01-21 | 2014-07-24 | Robert Bosch Gmbh | Werkzeugmaschinenbremsvorrichtung |
| DE102013225994A1 (de) * | 2013-12-16 | 2015-06-18 | Schaeffler Technologies AG & Co. KG | Vorrichtung zum Abbremsen eines Bearbeitungswerkzeugs und zugehörige Bearbeitungsmaschine |
| DE102014211578A1 (de) * | 2014-06-17 | 2015-12-17 | Robert Bosch Gmbh | Elektrowerkzeugmaschine |
| DE102014216441A1 (de) * | 2014-08-19 | 2016-02-25 | Robert Bosch Gmbh | Handwerkzeugmaschine |
| EP3150333B1 (de) * | 2015-09-30 | 2019-08-28 | Chervon (HK) Limited | Elektrohandwerkzeug mit einer verbesserten bremsanordnung |
| DE102015121228B3 (de) * | 2015-12-07 | 2017-05-04 | Walter Maschinenbau Gmbh | Achsanordnung zum Einspannen eines Werkzeugs oder eines Werkstücks und Verfahren zum Betreiben der Achsanordnung |
| DE102016210309B4 (de) * | 2016-06-10 | 2022-01-27 | Kuka Roboter Gmbh | Bremssystem mit Sicherheitsbremse und Bremslösesystem |
| EP3618999B1 (de) | 2017-07-24 | 2024-08-14 | Festool GmbH | Elektrowerkzeug und verfahren |
| DE102017116823A1 (de) * | 2017-07-25 | 2019-01-31 | C. & E. Fein Gmbh | Oszillierend angetriebene Werkzeugmaschine |
| DE102017121171A1 (de) * | 2017-09-13 | 2019-03-14 | Ferrobotics Compliant Robot Technology Gmbh | Verfahren und system zum automatischen wechseln von wellen |
| DE102018216573A1 (de) * | 2018-09-27 | 2020-04-02 | Robert Bosch Gmbh | Sicherheitsbremsvorrichtung |
| DE102018216552A1 (de) * | 2018-09-27 | 2020-04-02 | Robert Bosch Gmbh | Aktorik für ein Bremselement |
| DE102018218725A1 (de) * | 2018-10-31 | 2020-04-30 | Robert Bosch Gmbh | Sicherheitsbremsvorrichtung |
-
2019
- 2019-06-11 DE DE102019208438.9A patent/DE102019208438A1/de not_active Withdrawn
-
2020
- 2020-04-27 CN CN202080042836.1A patent/CN114206533B/zh not_active Expired - Fee Related
- 2020-04-27 US US17/617,761 patent/US20220234240A1/en not_active Abandoned
- 2020-04-27 JP JP2021572910A patent/JP7492539B2/ja active Active
- 2020-04-27 WO PCT/EP2020/061609 patent/WO2020249297A1/de not_active Ceased
- 2020-04-27 EP EP20723313.1A patent/EP3983185A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE102019208438A1 (de) | 2020-12-17 |
| US20220234240A1 (en) | 2022-07-28 |
| JP7492539B2 (ja) | 2024-05-29 |
| CN114206533A (zh) | 2022-03-18 |
| CN114206533B (zh) | 2024-03-08 |
| WO2020249297A1 (de) | 2020-12-17 |
| JP2022535608A (ja) | 2022-08-09 |
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