US20190374997A1 - Setting device - Google Patents

Setting device Download PDF

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Publication number
US20190374997A1
US20190374997A1 US16/436,214 US201916436214A US2019374997A1 US 20190374997 A1 US20190374997 A1 US 20190374997A1 US 201916436214 A US201916436214 A US 201916436214A US 2019374997 A1 US2019374997 A1 US 2019374997A1
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US
United States
Prior art keywords
guide
accordance
setting
setting device
detection device
Prior art date
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Abandoned
Application number
US16/436,214
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English (en)
Inventor
Andreas Lebeau
Klaus Irmler
Benjamin Lesky
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.)
Profil Verbindungstechnik GmbH and Co KG
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Profil Verbindungstechnik GmbH and Co KG
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Filing date
Publication date
Application filed by Profil Verbindungstechnik GmbH and Co KG filed Critical Profil Verbindungstechnik GmbH and Co KG
Publication of US20190374997A1 publication Critical patent/US20190374997A1/en
Abandoned legal-status Critical Current

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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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/28—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/025—Setting self-piercing rivets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/30—Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
    • B21J15/32—Devices for inserting or holding rivets in position with or without feeding arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/10—Drives for forging presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06—Screw or nut setting or loosening machines
    • B23P19/062—Pierce nut setting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
    • B21J15/42—Special clamping devices for workpieces to be riveted together, e.g. operating through the rivet holes

Definitions

  • the present invention relates to a setting device for fastening an element to a workpiece.
  • Setting devices are frequently used in the mass production of workpieces to fasten elements thereto that provide specific functions.
  • Such elements can, for example, be nut element or pin elements that serve as fastening points for further components.
  • Such elements can, for example, be used when fastening elements are to be applied to sheet metal parts.
  • a typical area of use of such setting devices is automotive manufacture. However, setting devices are also widely used in other sectors.
  • the setting device is provided with a guide device that reliably guides the element in a positionally faithful manner during the delivery and the pressing.
  • the guide device has an axial hollow space through which the element is guided in a setting direction—that is toward the workpiece—by means of the axially movable ram.
  • the guide device has at least two guide elements that define the hollow space or bound it in a radial direction.
  • the guide elements are preloaded by means of a preloading device that generates a preloading force that acts radially inwardly on at least one of the guide elements—that is on a longitudinal axis of the hollow space. This preload provides that the element can be guided through the hollow space without any lateral play, which minimizes the risk of a canting of the element.
  • the at least two guide elements are at least sectionally movable relative to one another. They are preferably separately formed. It is, however, also possible in specific cases to configure the guide elements in one piece with one another, with an (elastic) bendability of the elements relative to one another being permitted. Two half-shells can, for example, be thought of in this connection that are connected to one another (e.g.
  • a section of a component of the setting device receiving the guide device as a guide element and to provide at least one second guide element inwardly preloaded in the radial direction.
  • the preloaded guide element On its movement through the hollow space, the preloaded guide element, for example, presses the fastening element to be set against a section of an inner surface of a housing component that receives the guide element.
  • a detection device is associated with the guide device and a presence, a position and/or a location of an element in the region of the guide device can be detected by it.
  • the detection device enables the delivery of the element to be monitored and to determine whether and where applicable how the element is supplied to the workpiece.
  • warning signals can be output at an early time and/or counter-measures can be initiated (e.g. an emergency stop or a prevention of a restarting of the setting process).
  • the detection device has an electrical principle of operation, in particular a capacitive, inductive and/or resistive principle of operation and/or an optical and/or magnetic and/or acoustic principle of operation and/or comprises a force sensor and/or a pressure sensor.
  • an electrical principle of operation in particular a capacitive, inductive and/or resistive principle of operation and/or an optical and/or magnetic and/or acoustic principle of operation and/or comprises a force sensor and/or a pressure sensor.
  • Different sensor types and/or detectors can be combined to optimize the detection of the element.
  • the detection device is, for example, at least partly integrated in at least one of the guide elements. Additionally or alternatively at least one measurement tap or sensor of the detection device is arranged in a region of operation of the guide device viewed in the direction of setting. This enables a direct or indirect observation of the element in the region of the guide device.
  • the detection device in particular comprises a first contact element that is provided at an inner side of the first guide element and a second contact element that is provided at an inner side of the second guide element, wherein the contact elements can be brought at least sectionally into contact with the element on the movement of the element through the hollow space or are in contact therewith at least at times, and wherein an electrical voltage and/or an electrical current can be applied between the contact elements by means of the detection device.
  • a measurement of the current, of the voltage, or of the resistance between the contact elements makes it possible to detect the presence—and also the position or location with a corresponding configuration of the contact elements—in a simple manner.
  • contact elements for example two or more contact elements per guide element, in particular with the contact elements being arranged in sections axially offset in the setting direction and being separately controllable to detect an axial position, location and/or an axial movement of the element.
  • the guide elements themselves can form the contact elements, i.e. an inner surface of the guide elements forms the contact elements.
  • the detection device can comprise at least one magnetic field sensor, in particular a Hall sensor. This enables the detection of an element having paramagnetic or permanent magnetic properties. It is also conceivable to provide at least one magnetic field source (e.g. one or more coils and/or permanent magnets) and to detect and evaluate the changes of the generated magnetic field by the presence and/or movement of the element by one or more magnetic field sensors. With a suitable embodiment of the generated magnetic field and with a corresponding arrangement of the sensor or sensors, it is possible to detect an axial position, location and/or an axial movement of the element. This principle can generally also be implemented with electrical fields and corresponding sensors.
  • at least one magnetic field sensor e.g. one or more coils and/or permanent magnets
  • the detection device comprises at least one measurement coil, in particular with the measurement coil being arranged coaxially to the hollow space.
  • the presence of an element changes the inductance of the measurement coil, which can be easily recognized by known measurement methods.
  • a time change of the inductance also provides information on the movement of the element.
  • the detection device comprises at least one piezo receiver and/or at least one strain gauge by means of which a force can be detected that acts on at least one of the guide elements and/or that acts between the guide elements.
  • the detection device can comprise at least one movement sensor or distance sensor by which a movement of the guide device and/or at least one of the guide elements can be detected, in particular wherein a movement and/or a distance change of the at least one of the guide elements relative to a different component of the setting device and/or a movement and/or a distance change of the guide elements relative to one another can be detected.
  • a movement sensor to detect the change of an eigen frequency of the guide device by the presence of the element.
  • An excited vibration that is deliberately generated by means of a corresponding vibration source can be provided to implement this measurement principle. It is, however, also possible to analyze the oscillations/vibrations occurring in normal operation of the setting device.
  • the detection device can comprise at least one sound source and at least one sound sensor.
  • the presence or location of the sensor can be determined by the detection of a change of the sound pattern and/or by the detection of sound waves reflected at the element and/or transmitted by the element.
  • the detection device comprises at least one compressed air source and at least one pressure sensor.
  • Compressed air is, for example, introduced into the hollow space and a pressure in the region of the hollow space is determined by means of a pressure sensor. The measured pressure depends on whether and where applicable where the element is located in the hollow space. The detection of the element thus ultimately takes place via a pressure measurement or via an analysis of the development of the pressure over time.
  • the guide elements are at least partly, in particular completely, produced from an electrically conductive material, preferably from metal.
  • Guide elements that are adjacent in the peripheral direction are in particular separated from one another by an interval, for example by a slit.
  • the guide elements can be connected to one another by at least one connection element bridging the interval, in particular with the connection element comprising an electrical conductor and/or a pressure sensor, force sensor and/or distance sensor. If the guide elements are pressed apart by the presence of the element, an increase in size of the interval can occur that in turn has an influence on the connection element. This influence represents a measurement variable whose evaluation enables statements on the state of the setting device or on the presence and/or location of the element.
  • the guide elements can be electrically insulated from one another. This is in particular of advantage when the guide elements (or parts thereof) themselves act as electrical contacts.
  • a respective at least one insulation element can be arranged in the interval, in particular with the insulation element comprising or being completely produced from an electrically insulating and/or elastic material.
  • the detection device can be at least partly arranged in the interval and/or can be integrated in the insulation element—if present.
  • the preloading device comprises at least one (at least sectionally) elastic preloading element (e.g. a preloading element at least partly, in particular completely, comprising an elastomer) that surrounds the guide elements at their radial outer sides in the peripheral direction (in a directly contacting manner or indirectly).
  • a preloading element e.g. a preloading element at least partly, in particular completely, comprising an elastomer
  • the preloading element can be connected to at least one of the insulation elements. It is preferably configured in one piece therewith or is molded thereto (or vice versa).
  • the preloading element and/or the insulation element can comprise an elastomer arranged at at least one of the guide elements.
  • Such an embodiment can be manufactured inexpensively and surprisingly delivers a reproducible and sufficiently large preloading force.
  • the preloading device can have a contact section that is arranged at, in particular fastened or molded to, the guide device and that projects in at least one section of the guide device in the radial direction beyond an outer contour of the guide elements to form a support point for the radial support of the guide device.
  • a component of the setting device receiving the guide device in particular a housing section, can have at least one inwardly projecting contact section that is arranged at, in particular fastened or molded to, the component, with the contact section forming at least one support point for the radial support of the guide device.
  • at least one elastic contact section is provided that is arranged in the radial direction between the guide device and a component receiving the guide device, e.g. between a guide element and a housing section. The contact section thus provides a radial support of the guide device. It can also be provided at a preloading element surrounding the guide elements in the peripheral direction or can itself be formed by them or can be an independent functional component.
  • the contact section When the contact section is at least sectionally formed as elastic, for example comprises an elastomer, it can also provide the inwardly acting preloading force by a support to the outside. Each guide element would then preferably be provided with such an elastic contact section.
  • the contact section can also be provided at the insulation element(s).
  • the contact section can also—additionally or alternatively—comprise or be completely produced from an electrically insulating and/or elastic material.
  • the detection device can have at least two detection sections that are arranged offset from one another in the setting direction and/or in the peripheral direction.
  • a conclusion can be drawn on an axial position and/or location (e.g. tilt) of the element in the guide device by a suitable control of the sections.
  • the spatial resolution of the detection device here depends on the number and positioning of the detection sections and can be selected according to requirements.
  • a control device is associated with the detection device.
  • the detection device can also be connected to a (higher ranking) control device by which signals of the detection device can be detected and/or evaluated to determine the presence, position and/or location of the element in the region of the guide device. To obtain more exact information on the progress of the setting of the element, the time progression or changes of the detected measurement variables can be analyzed.
  • FIG. 1 a setting device in a perspective view
  • FIGS. 2 to 6 a cross-section through the setting device in accordance with FIG. 1 in different operating states
  • FIG. 7 a cross-section through the setting device in accordance with FIG. 1 on a malfunction
  • FIG. 8 a cross-section through a base plate of the setting device with an embodiment of a guide device
  • FIG. 9 the components of the guide device in accordance with FIG. 8 in an exploded representation
  • FIGS. 10A to 10D a further embodiment of the guide device in a perspective view, in a cross-section, or in two longitudinal sections;
  • FIG. 11 a further embodiment of the guide device in a perspective view
  • FIG. 12 an embodiment of the base plate in a perspective view
  • FIG. 13 a cross-section through the base plate in accordance with FIG. 12 .
  • FIGS. 14A to 14D a further embodiment of the guide device in a perspective view, in a cross-section, or in two longitudinal sections;
  • FIGS. 15A to 15D a further embodiment of the guide device in a perspective view, in a cross-section, or in two longitudinal sections;
  • FIGS. 16 to 18 further embodiments of the guide device
  • FIG. 19 an embodiment of the guide element
  • FIGS. 20 to 22 further embodiments of the guide device.
  • FIG. 1 shows a setting device 10 in a perspective view. It comprises a guide housing 12 and a guide plate 14 .
  • the setting device 10 has a sensor 16 by which it can be monitored whether the setting device 10 is in a closed state or in an open state.
  • a base plate 18 is arranged at the guide plate 14 and can be brought into contact with a workpiece to fasten a fastening element to it.
  • FIG. 2 shows a cross-section through a part of the guide plate 14 and through the base plate 18 .
  • the guide plate 14 has a supply passage 20 by which the fastening element 22 to be fastened to the workpiece can be brought into a position from where it can be pressed toward and into the workpiece by a ram or plunger 24 movable in a setting direction S.
  • a starting situation/position is shown in FIG. 2 in which the element 22 is clamped by means of holding fingers.
  • the setting device 10 is open and the element 22 can be processed.
  • the base plate 18 has already been brought into contact with a surface of a workpiece 36 to which the element 22 should be fastened. It is understood that the workpiece 36 that is shown as a sheet metal part by way of example can also be differently configured. The same applies to the element 22 .
  • the element 22 is pressed by the ram 24 into a passage-like axial hollow space 26 of a guide device 28 of the base plate 18 .
  • the holding fingers are pressed back in this process.
  • the guide device 28 comprises a plurality of guide segments 30 A, 30 B.
  • the segments 30 A, 30 B are separate components that are divided from one another by a slit 39 , that each have a cross-section like a segment of a circle, and that are arranged such that they bound the hollow space 26 in the peripheral direction. They are preloaded by a preloading device not shown in detail in a direction toward a longitudinal axis 32 H of the hollow space 26 that is arranged coaxially with a longitudinal axis 32 S of the ram 24 , that is radially inwardly. As soon as the element 22 enters into the hollow space 26 , the segments 30 A, 30 B are urged outwardly against the preloading force generated by the preloading device.
  • FIG. 4 shows how the element 22 is pushed through the hollow space 26 of the guide device 28 .
  • a peripheral surface 34 of the element 22 cooperates with the segments 30 A, 30 B.
  • a reliable guidance of the element 22 is ensured by the preloading force since the risk of a tilting or canting of the element 22 is minimized.
  • FIG. 5 shows how the element 22 is pressed into the only indicated workpiece 36 .
  • the element 22 is a self-piercing element.
  • a shaping of a rivet section 38 of the element 22 is not shown that can be effected by the action of a die, not shown.
  • the shaped rivet section 38 engages behind the workpiece 38 at its rear side.
  • a slug, not shown, has been removed. It is pointed out for reasons of completeness that the setting device 10 can generally also be used with non-self-piercing elements 22 .
  • the workpiece 36 is then prepunched in a suitable manner.
  • FIG. 6 shows the “normal case”.
  • the setting device 10 is removed from it and brought into a new setting position. This can be done by a movement of the setting device 10 or by a movement of the workpiece 36 . Both the setting device 10 and the workpiece 36 can also be moved or a new workpiece 36 can be delivered. A new element 22 has already been brought into the starting position that has also already been shown in FIG. 2 .
  • FIG. 7 shows a malfunction of the setting device 10 .
  • the first element 22 is still in the region of the guide device 28 , for example because it has canted there, and blocks the hollow space provided to guide the element 22 .
  • the second element 22 already brought into the starting position would now be pressed against the first element 22 by the ram 24 , which would very likely have the consequence of damage to the setting device 10 , in particular to the guide device 28 .
  • a detection device is provided by means of which the presence of an element 22 in the hollow space 26 can be detected.
  • An embodiment of such a detection device is shown in FIG. 8 . It is integrated in the guide device 28 whose components are shown in an exploded representation in FIG. 9 .
  • the guide device 28 comprises four guide segments 30 A, 30 B, 30 C, 30 D (preferably composed of metal) that each form a peripheral section of the hollow space 26 . They are separated from one another by insulating pins 40 that are arranged in slits 39 provided between adjacent guide segments 30 A, 30 B, 30 C, 30 C (see e.g. FIGS. 3, 10A, 10B ).
  • the insulating pins 40 can comprise an elastomer. They electrically insulate adjacent segments 30 A, 30 B, 30 C, 30 D and enable a relative movement of the segments 30 A, 30 B, 30 C, 30 D due to their elastic properties.
  • Elastic rings 42 A, 42 B, 42 C e.g.
  • 0 rings are provided to generate the initially described preload of the segments 30 A, 30 B, 30 C, 30 D. They are disposed in correspondingly dimensioned grooves 44 .
  • the segments 30 A, 30 B, 30 C, 30 D are radially inwardly preloaded toward the elastic insulating pins 40 by the rings 42 A, 42 B, 42 C.
  • the rings 42 A, 42 B, 42 C are stretched by an introduction of an element 22 into the hollow space 26 . A force acting in a radial direction on the element 22 is ultimately thereby generated that stabilizes the location of the element 22 .
  • the electrically conductive segments 30 A and 30 B are connected to electrical conductors 46 A, 46 B. They permit a voltage to be applied between the elements 30 A, 30 B by means of a control device. If the element 22 is electrically conductive, it short circuits the segments 30 A, 30 B as soon as it enters into the hollow space 26 so that a current can flow, which is detected by the control device. It is generally also possible to determine the presence of the element 22 in an analog manner via a resistance measurement or via other electrical parameters.
  • segments 30 A, 30 B, 30 C, 30 D are provided in the embodiment shown in FIGS. 8 and 9 and two of them ( 30 A and 30 B) act as electrical contacts. It is understood that the number of guide segments provided and the kind of contacting (e.g. contact pairing) can be selected as required. It is furthermore possible not to use individual guide segments themselves as electrical contacts, but rather only to provide sections of one of the segments or a plurality of segments with electrical contacts.
  • An axial support of the guide device 28 or of the segments 30 A, 30 B, 30 C, 30 D in a housing 18 A of the plate 18 takes place via an electrically insulating support ring 45 .
  • a radial support can take place via the rings 42 A, 42 C since they project out of the grooves 44 in part and thus project over the segments 30 A, 30 B, 30 C, 30 D in the radial direction.
  • FIGS. 10A to 10D show a further embodiment of the guide device 28 , wherein FIG. 10A is a perspective view and FIGS. 10B to 10D are transverse sections or longitudinal sections.
  • the rings 42 A, 42 B, 42 C and in the insulating pins 40 are formed in one piece. They can also only be connected to one another or can be separate components.
  • the above-named components are molded to the segments 30 A, 30 B, 30 C, 30 D.
  • Preferred materials from which said components can be formed are elastically deformable plastics, in particular elastomers. They are, for example, obtained by vulcanization of a thermoplastic natural rubber or of a synthetic rubber.
  • the segments 30 A, 30 B, 30 C, 30 D are provided at their respective upper sides with recesses 48 A or 48 B that enable an axial fixing of the segments 30 A, 30 B, 30 C, 30 D, which will be explained in more detail in the following.
  • FIG. 11 shows an alternative embodiment of the guide device 28 .
  • Insulating pins 40 are provided here that extend between the rings 42 A, 42 C in the axial direction, but do not project beyond them in the axial direction.
  • the slits 39 are therefore only partly filled. Unlike what is shown, these components can be configured in one piece.
  • the ring 42 B disposed between the rings 42 A, 42 C in the axial direction has a substantially square basic shape and engages around the insulating pins 40 from the outside to generate an additional preload.
  • FIG. 12 shows the guide device 28 of FIG. 11 in a state assembled in the base plate 18 .
  • the conductors 46 A, 46 B are connected to a control device not shown in any more detail via a multipoint plug 50 .
  • An electrical connection to the guide plate 14 (see conductor 46 C) is also established via the plug 50 .
  • the segments 30 A, 30 B, 30 C, 30 D are fixed in the housing 18 A of the base plate 18 from above by a fixing element 52 and a supply rail 54 .
  • the supply rail 54 forms a part of the passage 20 (see FIG. 2 ).
  • FIG. 13 shows the base plate 18 in a sectional view.
  • the axial fixing of the guide device 28 by the fixing element 52 and by the supply rail 54 can be recognized.
  • the fixing element 52 is produced from insulating material and can therefore be in direct contact with the segment 30 A. It is screwed to the housing 18 A by means of a screw 56 .
  • the supply rail 54 that plays a role in the delivering of the element 22 into the starting position is, in contrast, insulated with respect to the segment 30 B by means of an insulating plate 58 .
  • the fixing element 52 and the supply rail 54 engage into the recesses 48 A and 48 B respectively.
  • the components 52 , 54 can be composed of plastic.
  • FIGS. 14A to 14D show a further embodiment of the guide device 28 , wherein FIG. 14A is a perspective view and FIGS. 14B to 14D are transverse sections or longitudinal sections.
  • insulating pins 40 of the embodiments in accordance with FIGS. 8, 9, and 10A to 10D having a substantially circular cross-section insulating pins 40 having an approximately trapezoid cross-section are arranged in the slits 39 between adjacent segments 30 A, 30 B, 30 C, 30 D.
  • the insulating pins 40 project in the radial direction outwardly beyond the segments 30 A, 30 B, 30 C, 30 D so that they enable a support of the guide device 28 in the housing 18 A.
  • the insulating pins 40 not only serve for the electrical insulation of the segments 30 A, 30 B, 30 C, 30 D with respect to one another, but also for their radial support.
  • the elastic properties of the insulating pins 40 provide—with a suitable dimensioning of the radial overhang—the desired preload on the segments 30 A, 30 B, 30 C, 30 D.
  • the radial inner sides of the insulating pins 40 are set back with respect to the inner sides of the segments 30 A, 30 B, 30 C, 30 D in order not to impede the movement of the element 22 through the hollow space 26 .
  • the insulating pins 40 can be separate components or can be molded to the segments 30 A, 30 B, 30 C, 30 D. They preferably comprise elastomer.
  • the concept of providing a preloading device by elements projecting outwardly in the radial direction and having elastic properties can generally also be implemented in isolation from the insulating pins 40 . It is, for example—additionally or alternatively—possible to provide or mold elastic abutment sections that are supported in the housing 18 A at the outer sides of the segments 30 A, 30 B, 30 C, 30 D. Conversely—additionally or alternatively—elastic contact sections that project radially inwardly can also be provided at the housing 18 A and serve for the radial support of the guide device 28 . The contact sections can be fastened to the guide device 28 and/or to the housing 18 A or can molded thereto or can be separate components.
  • FIGS. 15A to 15D show a further embodiment of the guide device 28 , wherein FIG. 15A is a perspective view and FIGS. 15B to 15D are transverse sections or longitudinal sections.
  • segments 30 A, 30 B, 30 C, 30 D segments 30 A, 30 B, 30 C, 30 C′, 300 ′′, 30 D, 30 D′, 30 D′′ are provided between which an insulating pin 40 is respectively arranged in a corresponding slit 39 .
  • FIG. 16 shows an embodiment of the guide device 26 in which the segment 30 B (as in the above-described embodiments) is directly connected to a conductor 46 B.
  • an element 22 If an element 22 is introduced into the hollow space 26 , it presses the segments 30 A, 30 B apart against the preload generated by the rings 42 .
  • a contact point 59 A that is provided at the segment 30 A thereby comes into contact with a contact point 59 B that is provided at the housing 18 A.
  • the housing 18 A is in turn connected to the conductor 46 A.
  • a circuit is thus also closed by the element 22 in this case, but with a minimal relative movement of the segments 30 A, 30 B fixed by a spacing of the contact points 59 A, 59 B in a base state having to be added to finally effect the closing of the circuit.
  • FIG. 17 shows a detection device in which the segment 30 A has a plurality of detector elements 60 —for example contact surfaces—that are each connected to one another pairwise. If the element 22 is in a position in which the two contact surfaces 60 of a connected pair are in contact with it, a circuit is again closed, which enables a determination of the position of the element 22 in the hollow space 26 .
  • This situation is illustrated in FIG. 17 by way of example with reference to the location of the element 22 by which the two topmost detector elements 60 are short circuited.
  • the detector elements 60 can also be movement sensors or vibration sensors to detect changes of the oscillation/vibration pattern or of the eigen vibration of the guide device 28 or of the base plate 18 (the elements 60 —or at least one element 60 —can then also be attached to the housing 18 A inwardly or outwardly) that is caused by the presence/location/position of an element 22 in the hollow space.
  • the detector elements 60 can also be optical or magnetic sensors or pressure sensors or sensors of a different type (e.g. embedded measurement coils).
  • FIG. 18 shows a further embodiment of the guide device 28 .
  • Detector elements 60 are here provided both at the segment 30 A and at the segment 30 B. They can, for example, be coupled to one another such that oppositely disposed detector elements 60 form a pair that serves for the generation of a signal (e.g. a contact surface pair or a transmitter/receiver pair). It is, however, also possible to control and/or to monitor the individual elements 60 individually or in groups to obtain a more exact image of the position of the element 22 and/or of its location in space.
  • a tilted element 22 was drawn by way of example in FIG. 18 that contacts two detector elements/contact surfaces 60 that are not disposed opposite one another due to the location of said element 22 and thus closes a circuit between these elements 60 , which is recognized by the control device and is interpreted as a malfunction.
  • FIG. 19 shows a plan view of a guide segment 30 A having a plurality of detector elements 60 that are not only arranged distributed in an axial direction (cf. setting direction S), but also in a peripheral direction.
  • detector elements 60 can be selected absolutely as required (in particular with respect to the desired spatial resolution of the element detection).
  • the type of detector elements used (inter alia electrical measurement—e.g. voltage, current, resistance—measurement of acoustic signals, measurement of vibrations and/or movements and/or of spacings, measurement of optical signals, measurement of mechanical parameters—e.g. pressure and/or strain) is also generally freely selectable. Different detector types can also be combined to provide a detection device suitable for the respective application.
  • FIG. 20 shows an embodiment of a detection device that is based on the measurement of a spacing change between the segments 30 A, 30 B.
  • a connection element 61 is provided that serves as a measurement device, that bridges the slit 39 , and that connects the two segments 30 A, 30 B to one another. It can, for example, be an electrical conductor whose electrical properties are influenced by a length change or it can be a strain gauge.
  • distance sensors 62 e.g. capacitive sensors
  • strain gauges or piezo receivers can also be provided.
  • FIG. 22 shows a detection device that is based on the measurement of a pressure in the region of the guide device 28 .
  • Compressed air is introduced into the hollow space 26 for this purpose (see arrow D).
  • the pressure adopted is measured at one or more points in the housing 18 A, in particular in or adjacent to the hollow space 26 , by means of corresponding pressure sensors 64 .
  • the pressure adopted at the one measurement point or at the plurality of measurement points inter alia depends on whether and where applicable where an element 22 is located in the hollow space 26 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Knitting Machines (AREA)
US16/436,214 2018-06-11 2019-06-10 Setting device Abandoned US20190374997A1 (en)

Applications Claiming Priority (2)

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DE102018113870.9A DE102018113870A1 (de) 2018-06-11 2018-06-11 Setzeinrichtung
DE102018113870.9 2018-06-11

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US (1) US20190374997A1 (fr)
EP (1) EP3581336B1 (fr)
CN (1) CN110576306A (fr)
DE (1) DE102018113870A1 (fr)
ES (1) ES2964170T3 (fr)

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DE925745C (de) * 1951-12-16 1955-03-28 Ernst Heinkel Motorenbau Ges M Vorrichtung zum UEberwachen der Nietzufuhr fuer automatische Nietmaschinen
JP3529778B2 (ja) * 1993-01-07 2004-05-24 ヘンロブ・リミテッド 改良型の締結器具
DE102008051488A1 (de) * 2008-10-13 2010-04-15 Böllhoff Verbindungstechnik GmbH Kopfstück für ein Setzgerät
US20130263433A1 (en) * 2012-03-26 2013-10-10 Newfrey Llc Automated Fastener Setting Tool
DE102013019519A1 (de) * 2013-11-22 2015-05-28 Tox Pressotechnik Gmbh & Co. Kg "Vorrichtung zum Anbringen eines Fügeelements an einem Bauteilabschnitt und Werkzeug"
US11000940B2 (en) * 2014-10-07 2021-05-11 Arvind Kumar Tirchirapolly PARAMASIVAN Automated fastener assembly
DE102016224174A1 (de) * 2016-12-06 2018-06-07 Robert Bosch Gmbh Verfahren und Anordnung zum Überwachen einer Stanznietvorrichtung

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ES2964170T3 (es) 2024-04-04
EP3581336A1 (fr) 2019-12-18
DE102018113870A1 (de) 2019-12-12
EP3581336B1 (fr) 2023-09-27
CN110576306A (zh) 2019-12-17

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