EP3815844A1 - Agencement des mâchoires de serrage - Google Patents

Agencement des mâchoires de serrage Download PDF

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Publication number
EP3815844A1
EP3815844A1 EP20186373.5A EP20186373A EP3815844A1 EP 3815844 A1 EP3815844 A1 EP 3815844A1 EP 20186373 A EP20186373 A EP 20186373A EP 3815844 A1 EP3815844 A1 EP 3815844A1
Authority
EP
European Patent Office
Prior art keywords
jaw
interchangeable
recess
securing
actuating
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.)
Granted
Application number
EP20186373.5A
Other languages
German (de)
English (en)
Other versions
EP3815844B1 (fr
EP3815844C0 (fr
Inventor
Markus Kleiner
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.)
Heinz Dieter Schunk GmbH and Co Spanntechnik KG
Original Assignee
Heinz Dieter Schunk GmbH and Co Spanntechnik KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heinz Dieter Schunk GmbH and Co Spanntechnik KG filed Critical Heinz Dieter Schunk GmbH and Co Spanntechnik KG
Publication of EP3815844A1 publication Critical patent/EP3815844A1/fr
Application granted granted Critical
Publication of EP3815844B1 publication Critical patent/EP3815844B1/fr
Publication of EP3815844C0 publication Critical patent/EP3815844C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/06—Arrangements for positively actuating jaws
    • B25B1/18—Arrangements for positively actuating jaws motor driven, e.g. with fluid drive, with or without provision for manual actuation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/02—Vices with sliding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B25B1/2452—Construction of the jaws with supplementary jaws

Definitions

  • the present invention relates to a clamping jaw arrangement with two jaw elements, wherein one jaw element is designed as a carrier jaw and one jaw element is designed as an interchangeable jaw, which is interchangeably mounted or mountable on the upper side of the carrier jaw, securing means which have a securing element which is movably arranged on the one jaw element is, so that it is between a securing position in which an end portion of the securing element protrudes over the one jaw element so that it comes or can be brought into engagement with a recess of the other jaw element in order to secure the jaw elements in a defined position to one another, and a Release position, in which the securing element is sunk into the one jaw element in order to release the jaw elements from one another, is movable, and actuating means which are designed and suitable for moving the securing element into its release position.
  • the invention also relates to an interchangeable jaw.
  • Clamping jaw arrangements are known in various designs and are used in different types of clamping devices in order to fix components.
  • clamping jaws are used on the gripper fingers of gripper assemblies in order to grip (clamp) components for transport.
  • chucks are primarily used, which are often designed as three-jaw chucks. These have a dimensionally stable chuck body, which has a central receptacle for a workpiece to be clamped, and three clamping jaws, which are in the radial jaw guides of the Chuck body arranged and can be moved together radially inwards or outwards by actuating an actuator.
  • the clamping jaws can be designed in one piece.
  • clamping jaw arrangements are used which each have a base or carrier jaw, which is held in the chuck body, and an interchangeable or top jaw, which protrudes from the chuck body and is connected to the carrier jaw.
  • a jaw assembly is from DE 35 12 929 C2 known.
  • the connection between the interchangeable jaw and the carrier jaw takes place in that the interchangeable jaw is pushed onto the carrier jaw from above.
  • connecting webs and connecting grooves are formed on a rear, upwardly protruding extension of the carrier jaw and on the interchangeable jaw, which are inclined with respect to a support surface of the carrier jaw on which the interchangeable jaw comes to rest and which come into positive engagement with one another when the interchangeable jaw from is placed on top of the carrier jaw.
  • Corresponding contact surfaces are provided on the front end face of the extension of the support jaw and a rear end face of the interchangeable jaw which come into contact with one another when the interchangeable jaw is placed on the carrier jaw.
  • the securing means are also provided in order to prevent the interchangeable jaw from being pulled off the carrier jaw.
  • the securing means here comprise a securing element which is held displaceably in a bore in the extension of the carrier jaw and is pressed by a compression spring into a recess which is formed in the rear contact surface of the interchangeable jaw.
  • FIG DE 20 2013 105 480 U1 A similar jaw arrangement is from FIG DE 20 2013 105 480 U1 known.
  • This also includes a support jaw which defines a support surface on its top and one of on its rear end region the support surface has upwardly protruding extension, as well as an interchangeable jaw that is replaceably mounted or mountable on the carrier jaw.
  • the clamping jaw arrangement is provided with a securing mechanism for securing the interchangeable jaw to the carrier jaw, which has a securing element which is mounted vertically displaceably in the carrier jaw and can engage with its upper end region in a corresponding recess formed in the interchangeable jaw.
  • the arrangement further comprises a locking pin which is arranged displaceably in a transverse bore of the carrier jaw and can be displaced between a locking position in which the locking pin prevents the securing element from being lowered and a release position in which the securing element can be lowered. Lowering the securing element causes it to disengage from the recess of the interchangeable jaw and thus release it.
  • the object of the present invention is therefore to provide an alternative clamping jaw arrangement which, in particular, enables the exchangeable jaw to be exchanged in a simple and automated manner. Furthermore, an interchangeable jaw and a method for exchanging an interchangeable jaw are to be created.
  • an interchangeable jaw which is provided in particular for use in a clamping jaw arrangement according to the invention and can be interchangeably mounted on an upper side of a carrier jaw, the interchangeable jaw having a recess on its underside which is provided for engagement for a securing element on the carrier jaw side , or has securing means which comprise a securing element which is movably arranged on the interchangeable jaw and which can be brought into engagement with a corresponding recess of a carrier jaw in order to secure the interchangeable jaw in a defined position on a carrier jaw, the securing element between a securing position in which it is in Engagement with the recess of the interchangeable jaw or with a recess arranged in a carrier jaw or can be brought in order to secure the interchangeable jaw in a defined position on the carrier jaw, and a release position, in which the securing element is sunk into the interchangeable jaw or in a carrier jaw in order to release the interchangeable jaw from the carrier jaw,
  • the invention is thus based on the fundamental consideration that when the interchangeable jaw is automatically gripped, the jaw in the interchangeable jaw at the same time to actuate provided actuating means and thus to adjust the securing element into its release position so that the interchangeable jaw can be removed from the carrier jaw.
  • the gripping and releasing of the interchangeable jaw takes place in one work step, so that no manual or separately controlled releasing of the interchangeable jaw is necessary.
  • the securing element can in principle be arranged both in the interchangeable jaw and in the carrier jaw. If it is arranged in the interchangeable jaw, it can be brought into engagement with a corresponding recess in a carrier jaw. In the opposite case, the interchangeable jaw has a corresponding recess on its underside which is provided for engagement for a securing element on the carrier jaw side.
  • the actuating means can have an actuating element which is inserted in a guide bore of the interchangeable jaw.
  • the actuating element is preferably held displaceably between a passive end position and a release position in the guide bore and is coupled to the securing element in such a way that the securing element is moved into its release position when the actuating element is moved from the passive end position into the release position.
  • An actuating element displaceable in a guide bore can be actuated in a simple manner, for example by means of a gripping device, by means of a translational movement.
  • the actuating element can be designed as an actuating pin. This is to be understood as meaning that the actuating element is an elongated, in particular has a cylindrical basic shape and is preferably provided with an at least substantially circular cross section, so that it is slidably mounted with radial play in the guide bore and can be moved along this.
  • the guide bore is expediently designed to be open on one side of the interchangeable jaw. This ensures that the actuating element can be moved into its release position by an engagement means introduced from the outside, for example a gripping finger of a gripping device.
  • prestressing means can be provided in order to prestress the actuating element in the direction of its passive end position.
  • the pretensioning means can comprise a spring, in particular a compression spring and preferably a helical compression spring. This prevents the securing element from being inadvertently brought into its release position and thus the interchangeable jaw being unintentionally detached from the carrier jaw.
  • the actuating element is preferably mounted displaceably in the guide bore of the interchangeable jaw in such a way that it does not protrude from the interchangeable jaw in any position.
  • the actuating element is therefore always located completely within the guide bore, which reduces the risk of damage and makes it more difficult for dirt and / or liquids to penetrate into the gap formed between the actuation element and the guide bore. It is therefore necessary to first insert an engaging means into the guide bore before it comes into contact with the actuating element and moves it. Unintentional touching and moving an outwardly protruding actuating element is reliably avoided.
  • limiting means can be provided in the interchangeable jaw in order to limit the displacement path of the actuating element.
  • the limiting means can comprise a pin which is arranged in a vertical bore of the interchangeable jaw and which engages in a groove formed in the actuating element and extending in its longitudinal direction in order to limit the displacement path of the actuating element.
  • a pin which is arranged in a vertical bore and which covers part of the cross section of the guide bore can preferably be provided with a thread by means of which it is screwed into a corresponding mating thread in the vertical bore.
  • the groove of the actuating element thus defines the displacement path of the actuating element in the guide bore.
  • the actuating element can have a centering recess in its outwardly facing end face for introducing an engaging means, preferably a gripping finger of a gripping device, the centering recess in particular having a circular cross section and preferably being conical at least in part. If an engaging means is introduced into the guide bore in order to move the actuating element from its passive end position into its release position, the engaging means is automatically centered.
  • an engagement means in particular a gripping finger or the gripping arms of a gripping device, can have a certain amount of movement so that tilting when it is introduced into the guide bore is prevented and, at the same time, perfect centering and thus a clean transmission of force to the actuating element are provided.
  • the securing element is movably arranged in a recess that is open towards the other jaw element.
  • This configuration is based on the fundamental consideration that the securing element can be arranged both in the carrier jaw and in the interchangeable jaw.
  • a recess is arranged in the interchangeable jaw opposite the recess, with which the securing element comes into engagement or can be brought into its securing position. If, on the other hand, the securing element is arranged in the interchangeable jaw, the corresponding recess is located opposite the recess in the carrier jaw.
  • the securing element is preferably designed in the form of a securing pin, which is guided displaceably in a recess of one jaw element designed as a receiving bore, the receiving bore preferably extending perpendicular to the top of the one jaw element.
  • a configuration as a securing pin with an elongated basic shape and preferably a circular cross section, which is guided in a sliding manner in a receiving bore, represents a particularly simple possibility of realizing the securing element.
  • a perpendicular direction of extent of the receiving bore in relation to the upper side of the jaw element also enables simple production of the jaw element, since no inclined bores have to be made at an angle other than 90 °.
  • the recess in the one jaw element is designed as a blind hole.
  • the securing element cannot be accidentally lost from the recess.
  • Resilient tensioning means can expediently be provided in order to pretension the securing element in the direction of its securing position.
  • the tensioning means can comprise a compression spring, preferably a helical compression spring, which is supported between the securing element and a support surface formed in the recess, in particular the base of the recess.
  • the end portion of the securing element that is in engagement or can be brought into engagement with the recess of the other jaw element and / or the recess of the other jaw element preferably has inclined surfaces, in particular conically shaped inclined surfaces, the end portion of the securing element which is in engagement or can be brought into engagement with the recess and the wall of the Cooperate recess in order to position the two jaw elements defined to one another.
  • This configuration ensures that, even if the interchangeable jaw is not prepositioned on the carrier jaw, the two jaw elements are aligned with one another in a defined manner when the end region of the securing element is brought into engagement with the recess of the other jaw element.
  • the securing element preferably has a particularly flat contact surface in its end facing the other jaw element.
  • An end face designed as a flat contact surface can rest on a corresponding counter surface, for example the bottom of the recess or another element.
  • one jaw element is the support jaw and the other jaw element is the interchangeable jaw forms.
  • the securing element is preferably movably arranged on the carrier jaw, whereas the interchangeable jaw is provided with a recess so that an end section of the securing element comes into engagement or can be brought into engagement with this recess.
  • the actuating means preferably further comprise a coupling element which is mounted in the interchangeable jaw so as to be displaceable transversely, in particular perpendicular to the guide bore, and which is operatively connected to the actuating element in such a way that a movement of the actuating element into the release position into a Movement of the coupling element is implemented.
  • a coupling element that can be displaced transversely to the guide bore is provided in the interchangeable jaw, which coupling element serves in particular to convert a movement of the actuating element in the direction of the guide bore into a movement of another element transversely, in particular perpendicular to the guide bore.
  • the actuating element and / or the coupling element can have a conically converging end section in order to convert a movement of the actuating element into its release position into a movement of the coupling element. Because at least one of the two elements has a conically converging end section, there is a plunger mechanism through which a translational movement of an element in a direction is converted into a translational movement of the other element in a transverse, in particular perpendicular to this direction. In addition to such a pusher mechanism, it would also be conceivable, for example, to achieve such a conversion of the direction of movement by means of a hydraulic coupling.
  • the coupling element is preferably designed in the shape of a bolt. This enables simple production of the coupling element as a turned part.
  • the coupling element is arranged displaceably in the recess of the interchangeable jaw.
  • the coupling element can thus be positioned directly above the securing element arranged in the carrier jaw, the coupling element being displaceable in particular in the direction of the recess, in particular the recess for the securing element designed as a receiving bore.
  • the coupling element can be displaced coaxially or parallel to the securing element. If the coupling element is designed as a rotating part, the recess can easily be designed as a bore.
  • stop means can be provided in the interchangeable jaw in order to limit the displacement path of the coupling element.
  • the stop means can comprise a projection formed in the recess or a stop element inserted into the recess, which engages in a recess formed in the coupling element, in particular in an annular circumferential recess or in a longitudinal groove.
  • the limitation of the displacement path of the coupling element is also necessary because it is arranged in the recess of the interchangeable jaw, which is open at the bottom, and otherwise during removal the interchangeable jaw could fall out of the carrier jaw as a result of gravity.
  • the coupling element can have a particularly flat pressure surface at its end pointing downwards, which, when the interchangeable jaw is mounted, rests against the contact surface of the securing element, so that the coupling element presses the securing element into its release position when the actuating element is moved into its release position .
  • This embodiment is based on the consideration that the coupling element exerts a downward pressure force directed towards the carrier jaw, by means of which the securing element is moved into the recess of the carrier jaw against the restoring force of the elastic clamping means until it is sunk into the carrier jaw. As soon as the securing element is sunk into the carrier jaw, the interchangeable jaw can be removed from the carrier jaw, since the securing element is no longer in engagement with the recess of the interchangeable jaw.
  • the carrier jaw can have an engagement contour on its upper side and the interchangeable jaw can have a counter-contour corresponding to this.
  • the main task of the engagement contour and the mating contour is to transmit the clamping forces that occur when a component is clamped.
  • the engagement contour can define at least two stop surfaces for abutment for two corresponding opposing surfaces of the opposing contour.
  • exactly two stop surfaces can be arranged in a V-shape relative to one another, with a stop surface forming a leg extending in particular horizontally.
  • the interchangeable jaw becomes Braced against the engagement contour of the support jaw via the stop surfaces when the securing element is moved into its securing position.
  • the interaction of the engagement contour of the carrier jaw with the mating contour of the interchangeable jaw prevents the interchangeable jaw from loosening upwards during clamping. Furthermore, a backlash-free connection of the interchangeable jaw with the carrier jaw is realized.
  • the interchangeable jaw can have at least two gripping recesses, which are preferably formed on the end face opposite the guide bore, in order to enable a gripping device to engage in order to change the jaw.
  • a gripping device for changing jaws can thus grip the exchangeable jaw from both lateral end faces.
  • Two gripping recesses arranged next to one another prevent the interchangeable jaw from tilting during transport with the gripping device, making it difficult or even impossible to automatically place it on the carrier jaw.
  • a symmetrical introduction of force during gripping can thereby be realized if the two gripping recesses formed on the end face opposite the guide hole are arranged symmetrically to the guide hole.
  • the gripping into the gripping recesses can be carried out with suitable engagement means, preferably likewise with gripping fingers.
  • the securing element can be arranged both in the interchangeable jaw and in the carrier jaw. If it is arranged in the interchangeable jaw, it can be brought into engagement with a corresponding recess in a carrier jaw. In the opposite case, the interchangeable jaw has a corresponding recess on its underside which is provided for engagement for a securing element on the carrier jaw side.
  • the actuating means comprise an actuating element, preferably designed as an actuating pin, which is arranged displaceably between a passive end position and a release position in a guide bore of the interchangeable jaw, wherein it is preferably mounted so that it can be displaced in the guide bore of the interchangeable jaw in such a way that it cannot be displaced in any Position protrudes from the interchangeable jaw.
  • the interchangeable jaw has a recess on its underside, which is provided for engagement for a securing element on the carrier jaw side, the actuating means further comprising a coupling element which is mounted in the recess of the interchangeable jaw so as to be displaceable transversely, in particular perpendicular to the guide bore, and with the actuating element is operatively connected in such a way that a movement of the actuating element in the release position is converted into a movement of the coupling element.
  • the actuation element and / or the coupling element have a conically converging end section in order to convert a movement of the actuation element into the release position into a movement of the coupling element.
  • the actuating element and the coupling element thus form a plunger mechanism which allows a translational movement of the actuating element in the direction of the guide hole to be converted into a translational movement of the coupling element transversely, preferably perpendicular to the direction of the guide hole.
  • the recess formed in the interchangeable jaw preferably extends perpendicular to the underside of the interchangeable jaw, whereby a coaxial or parallel movement of the coupling element can be realized that is directed in the same direction as the securing element on the carrier jaw side.
  • the coupling element can have an especially flat pressure surface at its downwardly pointing end, which, when the interchangeable jaw is mounted, rests against a corresponding contact surface of a securing element.
  • the clamping jaw arrangement is designed in such a way that the actuating means have an actuating element which is inserted in a guide bore of the interchangeable jaw.
  • the engagement means of the gripping device preferably comprise at least one engagement finger which is introduced into the guide bore when the interchangeable jaw is gripped in order to move the actuating element into its release position so that the securing element is moved into its release position in order to release the interchangeable jaw.
  • the interchangeable jaw preferably has at least two gripping recesses and the gripping device at least two gripping fingers which, when gripping, are brought into engagement in the corresponding gripping recesses of the interchangeable jaw. This ensures a clean, defined gripping of the interchangeable jaw without the risk of the interchangeable jaw tilting.
  • FIGS. 1 to 4 show a chuck 1, which has a dimensionally stable chuck body 2, in the upper end face of which two mutually opposite guide grooves 3 for receiving clamping jaws are formed.
  • a clamping jaw arrangement 4 according to the present invention is arranged in each of the two guide grooves 3, the clamping jaw arrangements 4 being supported in the guide grooves 3 such that they can be moved towards and away from one another.
  • the clamping jaw arrangements 4 each have two jaw elements, the lower jaw element engaging in the guide groove 3 being designed as a carrier jaw 5 and the upper jaw element as an interchangeable jaw 6.
  • the interchangeable jaw 5 is replaceably mounted on the top of the carrier jaw 5.
  • the support jaw 5 has an engagement contour 7a, which is provided for engagement in a corresponding mating contour 7b of the clamping jaw in order to transmit the clamping forces between the interchangeable jaw 6 and the support jaw 5 when a workpiece is clamped.
  • the engagement contour 7a extends as a profile in a transverse direction X and defines two stop surfaces 8a, 8b which are arranged in a V-shape relative to one another and against which the interchangeable jaw 6 is clamped in the assembled state.
  • a stop surface 8a forming the lower leg extends horizontally.
  • the clamping jaw arrangement 4 further comprises securing means in order to secure the jaw elements in a defined position relative to one another.
  • these have a securing element 9, which is movably arranged on the carrier jaw 5 and can be moved between a securing position and a release position.
  • a securing element 9 In the securing position, an end section 10 of the securing element 9 protrudes over the top of the carrier jaw 5 so that it comes into engagement or can be brought into engagement with a corresponding recess 11 of the interchangeable jaw 6.
  • the release position the securing element 9 is sunk into the carrier jaw 5 in order to release the interchangeable jaw 6 from the carrier jaw 5.
  • the securing element 9 is designed in the form of a securing pin which is guided displaceably with radial play in a recess 12 in the support jaw 5 designed as a receiving bore.
  • the mounting hole extends perpendicularly from an upper end face of the support jaw 5 into this and is designed as a blind hole.
  • elastic tensioning means in the form of a helical compression spring 13 are provided in the recess 12, which is supported between the securing element 9 and the bottom of the recess 12.
  • the securing element 9 is pretensioned in the direction of its securing position by the helical compression spring 13.
  • the end section 10 which is in engagement or can be brought into engagement with the recess 11 of the interchangeable jaw 6, like the recess 11 of the interchangeable jaw 6, has conically shaped inclined surfaces 14, 15.
  • the end section 10 of the securing element 9 facing the interchangeable jaw 6 and the wall of the recess 11 in the interchangeable jaw 6 cooperate in order to align the interchangeable jaw 6 relative to the carrier jaw 5.
  • the inclined surfaces 14, 15 the interchangeable jaw 6 can be clamped to the carrier jaw 5 via the stop surfaces 8a, 8b.
  • the securing element 9 On its upper end facing the interchangeable jaw 6, the securing element 9 has a flat, end-face contact surface 16, which lies flat against a corresponding flat pressure surface 17 of a coupling element 18 that is slidably mounted in the recess 11.
  • the coupling element 18 is designed in the shape of a bolt and, when the interchangeable jaw 6 is mounted, can be moved parallel to the securing element 9.
  • Stop means are provided in the interchangeable jaw 6 in order to limit the displacement path of the coupling element 18 and in particular to prevent it from falling out when the interchangeable jaw 6 is dismantled.
  • the stop means comprise a stop element 19 formed in the recess 11 of the interchangeable jaw 6, which is inserted into a in the coupling element 18 formed groove 20 engages. This prevents the coupling element 18 from accidentally falling out of the recess 11 when the interchangeable jaw 6 is dismantled.
  • the coupling element 18 has a conically converging end section 21 which rests against a likewise conically converging end section 22 of an actuating element 23, which in the present case is designed as an actuating pin.
  • the actuating element 23 is mounted displaceably in the interchangeable jaw 6 in a guide bore 24 which is open on one side of the interchangeable jaw 6 and which runs perpendicular to the direction of extension of the recess 11.
  • the actuating element 23 is between a passive end position, as in FIG Figure 2 shown, and a release position as in Figure 3 shown, displaceable in the guide bore 24, whereby it does not protrude laterally from the interchangeable jaw 6 in any position.
  • the actuating element 23 is operatively connected to the coupling element 18 via the abutting, conically converging end sections 21, 22 in such a way that a movement of the actuating element 23 in its release position is converted into a downward movement of the coupling element 18.
  • prestressing means are provided in order to prestress the actuating element 23 in the direction of its passive end position.
  • these comprise a helical compression spring 25 which is supported between the actuating element 23 and a projection 26 formed in the guide bore 24.
  • limiting means are also provided with regard to the actuating element 23 in the interchangeable jaw 6 in order to limit its displacement path.
  • the limiting means comprise one with a thread provided pin 27, which is screwed into a vertical bore 28 of the interchangeable jaw 6.
  • the pin 27 covers part of the cross-sectional area of the guide bore 24 and engages in a groove 29 formed in the actuating element 23 and extending in its longitudinal direction. By resting the pin 27 on the ends of the groove 29, the displacement path of the actuating element 23 is limited.
  • the actuating element 23 In its outwardly facing end face, the actuating element 23 has a centering recess 30 for introducing an engaging means.
  • the centering recess 30 has a circular cross section and is conical in its outer end region.
  • a gripping device 31 is shown, by means of which the interchangeable jaw 6 can be exchanged.
  • the gripping device 31 has a base body 32 arranged at the top, on which two opposing gripping arms 33 with a C-shaped basic shape are arranged such that they can be moved towards and away from one another.
  • the gripping arms 33 have a C-shaped basic shape.
  • the one in the Figures 5 to 9 Gripping arm 33 arranged on the left side has a gripping finger 34 at its lower end, which protrudes in the form of a pin from the gripping arm 33 and is adapted to the diameter of the guide bore 24 of the interchangeable jaw 6.
  • two further gripping fingers 34 are arranged side by side in its lower end area, facing inward, which are provided for engaging in two corresponding gripping recesses 35 of the interchangeable jaw 6. These are formed on the end face of the interchangeable jaw 6 opposite the guide bore 24.
  • the interchangeable jaw 6 is mounted on the carrier jaw 5.
  • the securing element 9 is in its securing position, which means that the top end section 10 engages in the recess 11 of the interchangeable jaw 6 and positions and secures it in a defined manner.
  • the securing element 9 protrudes with its upper end section 10 over the upper side of the carrier jaw 5.
  • the actuating element 23 mounted in the horizontal guide bore 24 is in its passive end position.
  • the securing element 9 braces the interchangeable jaw 6 via the stop surfaces 8a, 8b against the carrier jaw 5 through the cooperating inclined surfaces 14, 15. Only the in Figure 10 section of the inclined surface 14 of the securing element 9 lying on the right-hand side on the corresponding inclined surface 15 of the recess 11.
  • the gripping arms 33 of the gripping device 31 are positioned in such a way that the gripping fingers 34 are positioned concentrically with the guide bore 24 or the gripping recesses 35. Then, as in the Figures 7 , 9 and 11 shown, the gripping arms 33 of the gripping device 31 moved together so that the two at the in the Figure 7 Gripping fingers 34 attached to the gripping arm 33 shown on the right come into engagement in the gripping recesses 35 of the interchangeable jaw 6 and the gripping finger 34 arranged on the opposite gripping arm 33 comes into engagement in the guide bore 24.
  • FIG Figure 12 The removal of the interchangeable jaw 6 from the carrier jaw 5 by means of the gripping device 31 is shown in detail in FIG Figure 12 shown.
  • the gripping device 31 By the gripping device 31 in engagement with the interchangeable jaw 6, the interchangeable jaw 6 has been moved in relation to the in Figure 11
  • the illustrated state is pushed to the left, so that the mating contour 7b of the interchangeable jaw 6 no longer rests on the stop surfaces 8a, 8b of the carrier jaw 5.
  • the coupling element 18 is dimensioned in such a way and in particular has a sufficiently large diameter so that even after a horizontal movement of the interchangeable jaw 6 relative to the carrier jaw 5 - as in FIG Figure 12 shown - the coupling element 18 rests on the securing element 9 and pushes it down into its release position.
  • an exchange interchangeable jaw is then to be mounted on the carrier jaw 5, it is gripped with the gripping device 31 and, as in FIG Figures 7 , 9 and 11 shown, placed on the support jaw 5.
  • the gripping arms 33 apart comes into the Figures 7 and 9 left-hand gripping fingers 34 out of engagement from the guide bore 24, such as this in the Figures 5 , 6th and 8th is shown.
  • the actuating element 23 moves to its passive end position to the left, which is accompanied by an upward movement of the coupling element 18 and the securing element 9 as a result of the restoring force generated by the helical compression spring 13.
  • the upper end section 10 of the securing element 9 comes into engagement in the recess 11 of the interchangeable jaw 6.
  • actuating means in this case in particular the actuating element 23 and the coupling element 18, are arranged in the interchangeable jaw 6 ensures that the securing element 9 is automatically moved into its release position directly when gripping by means of the gripping device 31, without a separate work step or a separate control mechanism is required for this.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
EP20186373.5A 2019-07-17 2020-07-17 Agencement des mâchoires de serrage Active EP3815844B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019119398.2A DE102019119398B3 (de) 2019-07-17 2019-07-17 Spannbackenanordnung und Wechselbacke

Publications (3)

Publication Number Publication Date
EP3815844A1 true EP3815844A1 (fr) 2021-05-05
EP3815844B1 EP3815844B1 (fr) 2024-07-03
EP3815844C0 EP3815844C0 (fr) 2024-07-03

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EP20186373.5A Active EP3815844B1 (fr) 2019-07-17 2020-07-17 Agencement des mâchoires de serrage

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EP (1) EP3815844B1 (fr)
DE (1) DE102019119398B3 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3512929C2 (de) 1985-04-11 1987-03-12 Rudi 4018 Langenfeld Kirst Spannbacke
DE102004054177B3 (de) * 2004-11-10 2006-04-27 Schunk Gmbh & Co. Kg Fabrik Für Spann- Und Greifwerkzeuge Spann- oder Greifvorrichtung, insbesondere Linear- oder Zentrischgreifer
DE202013105480U1 (de) 2013-12-02 2015-03-03 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Spannbackenanordnung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050218608A1 (en) * 2002-05-02 2005-10-06 Johann Taglang Clamping chuck

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3512929C2 (de) 1985-04-11 1987-03-12 Rudi 4018 Langenfeld Kirst Spannbacke
DE102004054177B3 (de) * 2004-11-10 2006-04-27 Schunk Gmbh & Co. Kg Fabrik Für Spann- Und Greifwerkzeuge Spann- oder Greifvorrichtung, insbesondere Linear- oder Zentrischgreifer
DE202013105480U1 (de) 2013-12-02 2015-03-03 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Spannbackenanordnung

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EP3815844B1 (fr) 2024-07-03
DE102019119398B3 (de) 2020-08-13
EP3815844C0 (fr) 2024-07-03

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