WO2012055649A1 - Dispositif de sécurité par serrage imperdable - Google Patents

Dispositif de sécurité par serrage imperdable Download PDF

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Publication number
WO2012055649A1
WO2012055649A1 PCT/EP2011/066561 EP2011066561W WO2012055649A1 WO 2012055649 A1 WO2012055649 A1 WO 2012055649A1 EP 2011066561 W EP2011066561 W EP 2011066561W WO 2012055649 A1 WO2012055649 A1 WO 2012055649A1
Authority
WO
WIPO (PCT)
Prior art keywords
spindle
control
tool
transmission element
transmission
Prior art date
Application number
PCT/EP2011/066561
Other languages
German (de)
English (en)
Inventor
Florian Esenwein
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to RU2013124405/02A priority Critical patent/RU2588938C2/ru
Priority to JP2013535336A priority patent/JP2013540600A/ja
Priority to EP11760485.0A priority patent/EP2632633B1/fr
Publication of WO2012055649A1 publication Critical patent/WO2012055649A1/fr

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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
    • B24B23/02—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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power 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
    • 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

Definitions

  • the drainage devices include a transmission unit and a cam gear having a control.
  • the invention is based on a flow control device, in particular a handheld power tool safety device, for avoiding a running off of a clamping element and / or a tool from a spindle, in particular in a braking mode, with at least one transmission unit and with at least one cam gear that has at least one control element - points.
  • the cam mechanism has at least one control recess into which the control element at least partially engages.
  • a "tensioning element” is intended here in particular to define a clamping nut or a clamping flange for screwing onto or off the spindle, which is or is intended to clamp the tool axially against the transmission unit.
  • the transmission unit can be connected by means of a form-locking connection. tion and / or frictional connection, such as by means of a locking ring, to be secured to the spindle detachable.
  • the transmission unit is designed as a receiving flange which is arranged on a side of the spindle facing the handheld power tool on the spindle.
  • the receiving flange is preferably secured by means of the control element on the spindle, in particular along an axial direction.
  • the axial direction extends at least substantially parallel to a central axis of the transmission unit designed as a receiving flange.
  • Direction relative to the reference direction has a deviation in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °.
  • the transmission unit is preferably formed at least substantially rotationally symmetrical to the central axis. In a mounted state of the transmission unit, the center axis runs at least substantially coaxially to a rotation axis of the spindle.
  • the term "provided" is intended here to define in particular specially equipped and / or specially designed.
  • Cam mechanism is to be understood here in particular as a mechanism resulting from a movement of a first cam member, in particular a movement of the control member about an axis, and as a result Co-acting with a second cam member, in particular the control recess, a component drives, which consequently performs a predetermined by the interaction of the cam members movement.
  • a “control recess” is to be understood here in particular as a material recess into which the control element engages in order to produce a movement, wherein the control element and the control element engage
  • Control recess in particular relative to each other are movable.
  • structurally simple guidance of the control can be achieved in the control recess.
  • the control element is provided by means of an interaction with the control recess to convert at least in a braking operation, a first relative movement between the spindle and a transmission element of the transmission unit in a second relative movement.
  • a "braking operation” is to be understood here as meaning, in particular, an operation of a handheld power tool in which the spindle is braked by means of a braking device, so that the spindles are trailed. del, as for example when interrupting a power supply to an electric motor, advantageously at least largely can be prevented.
  • the braking operation it can by inertia of the tool, in particular a disc-shaped tool, to see a relative movement between the tool mounted on the spindle, the flow control device and provided for clamping the tool on the spindle clamping nut.
  • the relative movement between the tool and the clamping nut can cause the clamping nut is released and thus can drain from the spindle.
  • a transmission element of the transmission unit in particular a fitting in a mounted state on a tool transfer element, due to a rotational relative movement in a braking operation between the spindle and the transmission element by means of the cam gear translationally along the axis of rotation of the spindle moves relative to the spindle.
  • the control is pin-shaped.
  • pin-shaped is to be understood here as meaning, in particular, a geometric shape which has at least essentially a main extension, in particular a main extension along a central axis about which the geometric shape is rotationally symmetrical, the main extent being at least as great as one for the main extension
  • the control element is embodied in another form which appears expedient to a person skilled in the art:
  • a main extension of the control element runs in
  • the term "substantially perpendicular” should in particular define an orientation of a direction relative to a reference direction, the direction and the reference direction, esp especially considered in one plane, enclose an angle of 90 ° and the angle has a maximum deviation of in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °.
  • the main extension of the control element runs along another axis and / or direction which appears expedient to a person skilled in the art, for example at least substantially parallel to the rotation axis of the spindle.
  • the pin-shaped control element to engage in a control recess in which a ramp-like track is arranged.
  • the control recess extend in a plane aligned parallel to the rotation axis main extension in a plane which extends at least substantially perpendicular to a central axis of the transmission unit and / or to the axis of rotation of the spindle.
  • control element in particular on a side facing the control recess, and the ramp-like raceway each have a sliding coating, so that a low friction between the raceway and the control element can be achieved.
  • the spindle and arranged on the spindle transmission element of the transmission unit in particular a form-locking connected to the spindle transmission element, each have grooves and the control element to form an interface formed as inserted into the grooves rolling elements, in particular as a ball is.
  • An embodiment of the control as a thread between the spindle and the at the
  • Interface between the spindle and the transmission element is also conceivable.
  • the pin-shaped design of the control can advantageously be achieved a stable control.
  • structurally simple, for example, a securing function, in particular for axial securing and / or rotational securing, the transmission unit can be achieved on the spindle.
  • the transmission unit has at least one transmission element on which the control recess is arranged.
  • the control recess is arranged in the transmission element.
  • Control recess formed in particular by a groove This preferably has Transmission element in the region of the control recess in comparison to a region adjacent to the control recess region of the transmission element to a lower material thickness, in particular a material thickness of 0 mm.
  • at least two ribs are arranged on an outer surface of the transmission element, in which the control element engages at least partially.
  • the at least two ribs may in this case extend, in particular starting from the outer surface, at least substantially perpendicularly in the direction of the control element, so that the at least two ribs can form a guide for the control element.
  • the control element preferably extends at least partially through the transmission element in a region of the control recess.
  • control element has a main extent along a direction extending at least substantially perpendicular to the central axis of the transmission element, which is greater than one extent of the control recess along the at least substantially perpendicular
  • a secure coupling of the control element to the control recess and to the transmission element can be achieved.
  • the cam mechanism has at least one spring element which is provided to bias the transmission element relative to the control element.
  • a "spring element” is to be understood here as meaning, in particular, an element which is elastically deformable under a load, wherein the element can store a potential energy and, after a discharge, can automatically return to its pre-stress state by means of the stored potential energy.
  • the spring element is formed by another element which appears expedient to a person skilled in the art.It is advantageously possible to return the cam mechanism and / or the transmission element relative to the spindle to a starting position in a structurally simple manner be achieved.
  • control recess is arranged at least in a peripheral surface of a transmission element of the transmission unit along an angle range smaller than 40 ° along a circumferential direction.
  • control recess in the peripheral surface of the transmission element along an angular range of less than 30 ° and particularly preferably along an angular range less than 20 °.
  • the peripheral surface preferably extends concentrically around the central axis of the transmission unit.
  • the peripheral surface is at least partially formed by a lateral surface of a hollow cylinder-shaped spindle receiving region of the transmission element.
  • the circumferential direction preferably extends in a plane which extends at least partially perpendicular to the central axis of the transmission unit.
  • the control recess along the circumferential direction on a mathematically defined slope in the axial direction.
  • the slope of the control recess corresponds in particular to 100 to 150% of a slope of a
  • Thread between the clamping nut and the spindle preferably 1 10 to 140% of the pitch of the thread between the clamping nut and the spindle and more preferably 120 to 130% of the pitch of the thread between the clamping nut and the spindle.
  • a compact drainage safety device can be achieved.
  • control element has a coding region which is provided to engage in a coding recess of the spindle in an assembled state.
  • a "coding area” and a “coding recess” are intended here to mean, in particular, an area and a
  • the flow safety device is mounted on a spindle whose design with respect to a torque transmission exceeds a transmittable by the flow control device torque, so that advantageously a long life of the flow control device can be achieved and a risk of injury, for example, in case of damage exceeding a permissible torque to be transmitted, can be kept low for an operator.
  • the transmission unit has a further transmission element in which the control element is fixed.
  • the further transmission element is preferably provided for supporting a transmission element, which is movable relative to the spindle, of the transmission unit, in which the control recess is arranged.
  • Each of the transmission elements of the transmission unit can be advantageously designed according to respective specific operational requirements.
  • the further transmission element can be fixed at least substantially non-rotatably to the spindle.
  • the term "at least substantially non-rotatable” is to be understood here as meaning, in particular, a connection which transmits a torque and / or rotational movement at least essentially unchanged, in particular undiminished,
  • the further transmission element is preferably by means of a positive and / or non-positive connection with the spindle It is also conceivable to use a connection for rotationally fixed fixation that appears appropriate to a person skilled in the art.
  • the rotationally fixed connection between the further transmission element and the spindle is preferably detachable, so that the further transmission element can advantageously be decoupled from the spindle
  • the flow control device according to the invention can be advantageously used on existing spindles, so that advantageously a wide range of applications of the flow control device according to the invention can be achieved k ann.
  • the invention proceeds from a hand-held power tool, in particular from an angle grinder, with a flow-control device according to one of the preceding claims. It can be advantageously avoided a running of a tool from a spindle of the power tool.
  • FIG. 1 shows a hand tool according to the invention with a flow control device according to the invention in a schematic representation
  • FIG. 2 is a detailed view of the spindle arranged on the flow control device according to the invention in a schematic representation
  • FIG. 3 is a sectional view taken along the line III-III of Figure 2 of the flow control device according to the invention in a schematic view,
  • FIG. 4 is a sectional view of an alternative embodiment of a flow control device according to the invention with an analogous section along the line III-III of Figure 2 in a schematic representation,
  • FIG. 5 is a detailed view of a cam mechanism of the alternative embodiment of a flow control device according to the invention from Figure 4 in a schematic representation
  • Fig. 6 is a sectional view of the alternative embodiment of a flow control device according to the invention of Figure 4 after triggering the flow control device in a schematic representation and
  • Fig. 7 is a sectional view of another alternative embodiment of a flow control device according to the invention with an analogous section along the line III-III of Figure 2 in a schematic representation. Description of the embodiments
  • FIG. 1 shows a handheld power tool 42a designed as an angle grinder 40a with a flow control device 10a according to the invention in a schematic
  • the flow control device 10a is in this case designed as a handheld power tool safety device.
  • the angle grinder 40a comprises a protective hood unit 44a, a portable power tool housing 46a and a main handle 48a, which extends on a side 14a facing away from a tool 14a in the direction of a main extension direction 52a of the angle grinder 40a.
  • Tool 14a is formed as a cutting disc 62a. However, it is conceivable that the tool 14a is designed as a grinding or polishing wheel.
  • the portable power tool housing 46a comprises a motor housing 54a for receiving an electric motor (not shown here in detail) and a gear housing 56a for supporting a gear (not shown here in detail).
  • the auxiliary handle 58a extends transversely to the main extension direction 52a of the angle grinder 40a.
  • FIG. 2 shows, in a schematic illustration, the drainage protection device 10a arranged on a spindle 16a of the angle grinder 40a.
  • 10a comprises a transmission unit designed as a receiving flange 84a
  • Axial direction 66a pushed onto the spindle 16a until the tool 14a rests against a contact surface 68a of the transmission element 26a of the already arranged on the spindle 16a transmission unit 18a of the flow control device 10a.
  • a clamping element 12a designed as a clamping nut 60a is screwed onto a thread 70a of the spindle 16a with an internal thread (not shown here in detail) of the clamping element 12a.
  • the tool 14a is clamped to the spindle 16a, wherein the tool 14a is supported via the transmission unit 18a on the spindle 16a.
  • a torque can be generated by the spindle 16a be transferred to the tool 14a.
  • the spindle 16a is rotatably driven by means of the gear, not shown, and the electric motor, not shown, of the angle grinder 40a about a rotation axis 64a of the spindle 16a.
  • the tool 14a and the flow control device 10a are viewed in the working mode of the angle grinder 40a from the angle grinder 40a from a clockwise rotation driven.
  • the angle grinder 40a includes a braking device (not shown in detail here) to avoid trailing the spindle 16a in a shutdown operation of the angle grinder 40a, for example, after an interruption of a
  • the angle grinder 40a switches to a braking operation and brakes the spindle 16a by means of the brake device.
  • the tool 14a moves due to inertia further in the clockwise direction or further about the axis of rotation 64a of the spindle 16a, so that a torque difference between the tool 14a, the spindle 16a, the transmission unit 18a and the clamping element 12a arises.
  • This torque difference leads to a relative movement between the tool 14a, the transfer unit 18a and the clamping element 12a.
  • the clamping element 12a Due to a friction between the clamping element 12a and the sluggish tool 14a, the clamping element 12a is rotated counter to a rotation direction generated during operation of the angle grinder 40a with the tool 14a, so that a through the pitch of the internal thread of the clamping element 12a and the thread 70a of the spindle 16a can solve generated thread bias. As a result, the clamping element 12a can loosen over an entire thread length of the thread 70a of the spindle 16a and the clamping element 12a can run off together with the tool 14a of the spindle 16a.
  • the flow control device 10a is arranged on the spindle 16a on a side facing the angle grinder 40a to prevent it from running off the clamping element 12a designed as a clamping nut 60a and / or the tool 14a from the spindle 16a.
  • the flow control device 10 has a cam gear 20a.
  • the cam gear 20a comprises two control elements 22a, 72a (FIG. 3).
  • the control elements 22a, 72a engage in an assembled state into two control recesses 24a, 74a of the cam gear 20a.
  • cam gear 20a has another number of control elements 22a, 72a, which appear appropriate to a person skilled in the art, and control recesses 24a, 74a.
  • control elements 22a, 72a and control recesses 24a, 74a may be provided.
  • the controls 22a, 74a are movably disposed in the control recesses 24a, 74a. Furthermore, the controls 22a, 72a are pin-shaped. In this case, the control elements 22a, 72a are fixed by means of a press fit in each case in one of two recesses 80a, 82a of the spindle 16a on the spindle 16a. However, it is also conceivable that the control elements 22a, 72a are fixed to the spindle by means of another type of connection that appears appropriate to a person skilled in the art, such as, for example, a non-positive and / or a material connection.
  • the recesses 80a, 82a are arranged diametrically opposite one another on the spindle 16a.
  • the recesses 80a, 82a are distributed uniformly along a circumferential direction 30a on the spindle 16a.
  • the control recesses 24a, 74a are arranged on the transmission element 26a of the transmission unit 18a.
  • the control recesses 22a, 72a are arranged in a peripheral surface 28a of the transmission element 26a of the transmission unit 18a along an angular range of approximately 20 ° along the circumferential direction 30a.
  • the control elements 22a, 72a are provided to convert a first relative movement between the spindle 16a and the transmission element 26a of the transmission unit 18a into a second relative movement by means of cooperation with the control recesses 24a, 74a, at least during braking operation.
  • the first relative movement between the transmission element 26a and the spindle 16a is a rotation about the rotation axis 64a.
  • the second relative movement between the transmission element 26a and the spindle 16a is a translation along the axial direction 66a.
  • the rotation between the transmission element 26a and the spindle 16a arises during braking operation from the torque difference between the tool 14a and the transmission unit 18a.
  • the tool 14a rotates by the resulting friction between the tool 14a and the abutment surface 68a of the transmission element 26a
  • Transmission element 26a with.
  • the transmission element 26a is moved in translation along the axial direction 66a as a result of the rotation relative to the spindle 16a.
  • the transfer element 26a exerts a force along the axial direction 66a on the latter
  • the transmission element 26a has, on a surface 102a facing the spindle 16a, lubricant receiving elements (not shown here in greater detail) which are provided to enable a relative movement between the transmission element 26a and the spindle 16a with low friction
  • the translational movement along a distance x of the transmission element 26a is limited in this case by a dimension of the control recesses 24a, 74a.
  • the control elements 22a, 72a are each arranged in a tool-side region 96a of the control recesses 24a, 74a.
  • the transmission element 26a bears against a side 100a of the tool 14a facing the transmission unit 18a.
  • the contact surface 68a of the transmission element 26a is provided with an adhesive coating which has a high coefficient of friction.
  • the transfer unit 18a facing side 100a is also provided with an adhesive coating.
  • the control elements 22a, 72a have also each covered the distance x with respect to the tool-side region 96a of the control recesses 24a, 74a along the axial direction 66a.
  • the translational movement of the transmission element 26a is limited by a distance of the tool-side region 96a and the machine-side region 98a along the pitch of the control recesses 24a, 74a.
  • the spring elements 32a are formed as compression springs 88a. However, it is also conceivable that the spring elements 32a are formed in another form that appears appropriate to a person skilled in the art, for example as elastomer elements or the like.
  • the compression springs 88a are each arranged in one of the control recesses 24a, 74, viewed along the circumferential direction 30a, between a tool-side region 96a of the control recesses 24a, 74a and the control element 22a, 72a engaging in the respective control recess 24a, 74a. The compression springs 88a thus act on the transmission element 26a with spring forces along the circumferential direction 30a.
  • FIGS. 4 to 7 show two alternative embodiments. Substantially identical components, features and functions are basically numbered by the same reference numerals. To distinguish the embodiments, the letters a to c are added to the reference numerals of the embodiments. The following description is essentially limited to the differences from the first exemplary embodiment in FIGS to 3, wherein reference can be made to the description of the first embodiment in Figures 1 to 3 with respect to the same components, features and functions. FIG.
  • the drainage device 10b comprises a transmission unit 18b which has a first transmission element 26b and a second transmission element 38b.
  • the spindle 16b has two flats 92b on an outer circumference of the spindle 16b for receiving the transmission unit 18b designed as a receiving flange 84b, which are arranged diametrically on the outer circumference of the spindle 16b and thus form a two-edge 94b. In this case, only one of the flats 92b can be seen in FIG. Of the
  • Receiving flange 84b is arranged in a mounted state on a side facing the angle grinder 40a of the spindle 16b.
  • the second transmission element has a recess corresponding to the two-edge 94b (not shown here in detail), into which the two-edge 94b engages in a mounted state of the second transmission element 38b.
  • the second transmission element 38b by means of an interaction of the two-edge 94b and the corresponding recess rotationally fixed to the spindle 16b fixed.
  • the flow control device 10b comprises a cam mechanism 20b, which has two control elements 22b, 72b.
  • the cam gear 20b further comprises two control recesses 24b, 74b, in each of which one of the control elements 22b, 72b partially engages.
  • the control elements 22b, 72b are fixed in the second transmission element 38b by means of a press fit in recesses 108a, 110a.
  • the control elements 22b, 72b are fixed in the second transmission element 38b by means of another type of connection that appears appropriate to a person skilled in the art, for example by means of a material connection.
  • control elements 22b, 74b engage in recesses in the spindle 16b for the rotationally fixed fixing of the second transmission element 38b, so that an embodiment of the two-edge 94b and the corresponding recess on the second overlay. tragungselement 38b could be omitted.
  • the control recesses 24b, 74b of the cam gear 20b are arranged in a circumferential surface 28b of the first transmission element 26b of the transmission unit 18b along an angular range of approximately 20 ° along a circumferential direction 30b.
  • the control recesses 24b, 74b viewed along the circumferential direction 30b, a mathematically defined slope in an axial direction 66b.
  • the control elements 22b, 72b extend from the second transmission element 38b into the control recesses 24b, 74b.
  • the cam gear 20b further comprises two spring elements 32b, which are provided to bias the first transmission element 26b against the control elements 22b, 72b
  • the control elements 22b, 72b are provided by means of an interaction with the control recesses 24b, 74a to convert a first relative movement between the spindle 16b and the first transmission element 26b of the transmission unit 18b into a second relative movement in a braking operation of the angle grinder 40b.
  • the first transmission element 26b is in this case due to a rotational movement relative to the spindle 16b and relative to the second transmission element 38b translationally relative to the spindle 16b and the second transmission element 38b along a rotation axis 64b of the spindle 16b in the direction of the tool 14b moves.
  • the translational movement along a distance x of the first transmission element 26b is limited by a dimension of the control recesses 24b, 74b.
  • the control elements 22b, 72b are each arranged in a tool-side region 96b of the control recesses 24b, 74b.
  • the first transmission element 26b and the second transmission element 38b in this case bear against a side 100b of the tool 14b facing the transmission unit 18b.
  • the second transmission element 38b it is also conceivable for the second transmission element 38b to be arranged at a distance from the side 100b of the tool 14b facing the transmission unit 18b and only the first transmission element 26b to be arranged on the side facing the transmission unit 18b. te 100b of the tool 14b is applied.
  • a contact surface 68b of the first transmission element 26b resting against the side 100b facing the transmission unit 18b is provided with an adhesive coating which has a high coefficient of friction.
  • the side 100b facing the transfer unit 18b is also provided with an adhesive coating.
  • Control recesses 24b, 74b in the direction of a machine-side portion 98b of the control recesses 24, 74b moves.
  • the second transmission element 38b is decoupled from the side 100b of the tool 14b facing the transmission unit 18b.
  • the first transmission element 26b has traveled the distance x along the axial direction 66b.
  • the control elements 22b, 72b have also covered the distance x with respect to the tool-side area 96b of the control recesses 24b, 74b along the axial direction 66b.
  • the translational movement of the first transmission element 26b is limited by a distance of the tool-side region 96b and the machine-side region 98b along the pitch of the control recesses 24b, 74b (FIGS. 5 and 6).
  • the first transmission element 26b has on a second transmission element 38b facing surface 102b lubricant receiving elements (not shown here), which are intended to allow a relative movement between the first transmission element 26b and the second transmission element 38b with low friction. It is also conceivable that the lubricant absorption elements are arranged on the second transmission element 38b or are arranged both on the first transmission element 26b and on the second transmission element 38b.
  • FIG. 7 shows a flow control device 10c for avoiding a running off of a clamping element 12c designed as a clamping nut 60c and / or of a tool 14c from a spindle 16c of an angle grinder 40c.
  • the win Grinder 40c here has a substantially analogous construction to the angle grinder 40a shown in FIG.
  • the flow control device 10c has a substantially analogous construction to the flow control device shown in FIGS. 4 to 6.
  • the drainage device 10c comprises a transmission unit 18c, which has a first transmission element 26c and a second transmission element 38c.
  • the flow control device 10c comprises a cam mechanism 20c, which has two control elements 22c, 72c.
  • the cam gear 20c further comprises two control recesses 24c, 74c, in each of which one of the control elements 22c, 72c partially engages.
  • the control elements 22c, 72c are fixed in the second transmission element 38c by means of an interference fit.
  • the control elements 22c, 72c are fixed in the second transmission element 38c by means of another type of connection that appears appropriate to a person skilled in the art, for example by means of a material connection.
  • the control elements 22c, 74c each have a coding region 34c, 76c, which is respectively provided to engage in a mounted state of the flow control device 10c in a coding recess 36c, 78c of the spindle 16c.
  • the coding recesses 36c, 78c are formed as grooves 104c, 106c extending along a rotation axis 64c of the spindle 16c. On a thread 70c of the spindle 16c facing side of the spindle 16c insertion openings of the grooves 104c, 106c are arranged.
  • the coding regions 34c, 76c extend into a receiving opening 90c of the transfer unit 18c for receiving the spindle 16c.
  • the coding portions 34c, 76c are inserted into the grooves 104c, 106c along the axial direction 66c.
  • the transmission unit 18c is axially secured.
  • the coding regions 34c, 76c and the coding recesses 36c, 78c are provided for fixing the second transmission element 38c in a rotationally fixed manner with the spindle 16c.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Harvester Elements (AREA)

Abstract

L'invention concerne un dispositif de sécurité par serrage imperdable, notamment un dispositif de sécurité par serrage imperdable pour machine-outil à main, permettant d'empêcher qu'un élément de serrage (12a; 12b; 12c) et/ou un outil (14a; 14b; 14c) ne se détache(nt) d'une broche (16a; 16b; 16c), ledit dispositif comprenant au moins une unité de transmission (18a; 18b; 18c) et au moins une transmission par came (20a; 20b; 20c) qui présente au moins un élément de commande (22a, 72a; 22b, 72b; 22c, 72c). L'invention propose que la transmission par came (20a; 20b; 20c) présente au moins un évidement de commande (24a 74a; 24b, 74a; 24c, 74c) dans lequel s'insère au moins partiellement l'élément de commande (22a, 72a; 22b, 72b; 22c, 72c).
PCT/EP2011/066561 2010-10-29 2011-09-23 Dispositif de sécurité par serrage imperdable WO2012055649A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
RU2013124405/02A RU2588938C2 (ru) 2010-10-29 2011-09-23 Предохранительное устройство для предотвращения самопроизвольного отделения зажимного элемента и/или рабочего инструмента
JP2013535336A JP2013540600A (ja) 2010-10-29 2011-09-23 脱落防止装置
EP11760485.0A EP2632633B1 (fr) 2010-10-29 2011-09-23 Dispositif de securite du deroulement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010043187.7 2010-10-29
DE102010043187A DE102010043187A1 (de) 2010-10-29 2010-10-29 Handwerkzeugmaschinenspannvorrichtung

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DE10002263A1 (de) * 2000-01-20 2001-07-26 Mets Owerke Gmbh & Co Spannvorrichtung zum axialen Festspannen eines insbesondere scheibenförmigen Werkzeugs an der Spindel eines Elektrowerkzeugs
EP2123380A1 (fr) * 2007-01-09 2009-11-25 Makita Corporation Dispositif de fixation pour outil à lame tournante
DE102008015955A1 (de) * 2008-03-20 2009-08-13 Metabowerke Gmbh Handwerkzeuggerät

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JP2013540600A (ja) 2013-11-07
RU2588938C2 (ru) 2016-07-10
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EP2632633A1 (fr) 2013-09-04
DE102010043187A1 (de) 2012-05-03
EP2632633B1 (fr) 2020-05-27

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