EP1762315B1 - Fügevorrichtung zum umformtechnischen Fügen - Google Patents

Fügevorrichtung zum umformtechnischen Fügen Download PDF

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Publication number
EP1762315B1
EP1762315B1 EP06120237A EP06120237A EP1762315B1 EP 1762315 B1 EP1762315 B1 EP 1762315B1 EP 06120237 A EP06120237 A EP 06120237A EP 06120237 A EP06120237 A EP 06120237A EP 1762315 B1 EP1762315 B1 EP 1762315B1
Authority
EP
European Patent Office
Prior art keywords
tool
joining
tool holder
frame
punch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP06120237A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1762315A1 (de
Inventor
Reinhold Opper
Ruben Gutierrez Romero
Joachim Möser
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.)
Newfrey LLC
Original Assignee
Newfrey LLC
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 Newfrey LLC filed Critical Newfrey LLC
Publication of EP1762315A1 publication Critical patent/EP1762315A1/de
Application granted granted Critical
Publication of EP1762315B1 publication Critical patent/EP1762315B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/047—C-shaped frames
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49833—Punching, piercing or reaming part by surface of second part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49833—Punching, piercing or reaming part by surface of second part
    • Y10T29/49835—Punching, piercing or reaming part by surface of second part with shaping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/49943—Riveting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49947—Assembling or joining by applying separate fastener
    • Y10T29/49954—Fastener deformed after application
    • Y10T29/49956—Riveting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53039—Means to assemble or disassemble with control means energized in response to activator stimulated by condition sensor
    • Y10T29/53061—Responsive to work or work-related machine element
    • Y10T29/53065—Responsive to work or work-related machine element with means to fasten by deformation
    • Y10T29/5307—Self-piercing work part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5343—Means to drive self-piercing work part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/5377—Riveter

Definitions

  • the invention relates to a joining device for forming-technical joining with a frame open on one side, a drive arranged on the frame with a movable punch and a tool holder, which supports a die lying opposite the punch on the frame according to the preamble of claim 1.
  • the invention further relates to such Joining device with a tool holder set comprising at least two tool holders of different lengths, which are interchangeable with each other and hold and support a tool lying opposite the punch on the frame.
  • Joining devices of the specified type are primarily used for joining workpieces made of sheet metal, for example by riveting, punch riveting or clinching.
  • Joining devices for example in automotive applications, there is the problem that the shape of the components to be joined requires different positions of the punch-opposed tool within the frame. Also, a change in the maximum opening width between the punch and the tool is often required for optimal adaptation of the joining device to different joining tasks.
  • the angular deviations in the reasonable order of magnitude are as equal as possible and do not depend on the position of the joint within the joining device, so that this can be taken into account in the design of the joining tools and the interpretation of the joining process.
  • Various angular deviations at different positions of the joint in the joining tool are considered disadvantageous.
  • the stress on the joining device during joining also results in an offset of the joint relative to the frame transversely to the longitudinal axes of punch and tool. This offset leads to an additional stress on the parts to be joined and of the devices carrying the joining device, for example of a robot, and should therefore also be as small as possible in every position of the joint.
  • the invention has for its object to provide a joining device of the type specified, in which the load occurring during joining angle deviation between the longitudinal axes of the punch and tool is small. Furthermore, there is the task of keeping the offset of the joint relative to the frame as small as possible.
  • the tool holder is formed so that it undergoes an elastic deformation due to buckling with progressive load when joining, which at least partially compensates for the load-dependent spreading of the legs of the frame.
  • the invention is based on the finding that the angle deviation occurring during the joining between the longitudinal axis of the punch and the longitudinal axis of the tool can be influenced by the deformation behavior of the tool holder under load in such a way that the tool holder bends under load in a direction that the Bending direction of the leg of the frame is opposite, without the stability and support function of the tool holder is affected.
  • the invention has the advantage that can be achieved with little effort, a smaller angular deviation and thus better joining results.
  • the load of the joining device by lateral forces is reduced and the service life of the joining device and the tools is improved.
  • a joining device with a tool holder set comprising at least two tool holder of different length, which are interchangeable and support a tool lying opposite the punch on the frame and support, to achieve that occurring due to stress during joining angle deviation between the longitudinal axes of stamp and tool of the Position of the tool in the joining device is largely independent, is further provided according to the invention that the various tool holder of the tool holder set are designed so that their respective elastic deformation under the load applied during joining a lying within a predetermined narrow range, maximum angular deviation between causes the longitudinal axis of the punch and the longitudinal axis of the tool.
  • the different tool holders can be adapted to the load situation resulting from their length in such a way that given the same process conditions for each tool holder during joining, essentially the same maximum angular deviations result.
  • the necessary Knowledge and methods to influence the deformation behavior of the tool holder in the sense of the invention are available to the person skilled in the art and can be supported by empirical measures.
  • the bending tendency of a longer tool holder can be promoted by suitable weakening of its cross section to cause under load a tool holder slightly curving shape change, which partially compensates for the change in shape of the frame and thereby allows compliance with a predetermined angular deviation.
  • the size of the angular deviations to be maintained with the various tool holders will be selected so that the predetermined narrow angular range can be maintained well with all tool holders.
  • the different tool holder of the tool holder set are formed with respect to their elastic deformation under the load during joining so that the offset of the joint relative to the frame transversely to the direction of the joining force a predetermined maximum value, in particular a maximum value of Does not exceed 1 mm.
  • the inventive design of the various tool holders is favored by a design in which the tool holder have a single foot and a uniform head, the head and foot are connected by a tapered portion whose shape change is optimized under load to maintain the predetermined angular deviation.
  • the tapered portion is in the shape of a circular cylinder.
  • parts of the area may be conical be executed and instead of a circular cross-section elliptical or polygonal cross-sections may be provided.
  • measures for changing the strength properties of the material are also possible.
  • zonewise change in the material properties for example by strain hardening, hardening, tempering the desired shape change property can be effected.
  • FIG. 1 shows a joining device which determines the joining of sheet metal parts by means of punch rivets.
  • the joining device comprises a C-shaped frame 1, which is usually attached to the articulated arm of an industrial robot, by means of which the joining device can be moved into the respective working position.
  • a holder 3 At the upper leg 2 of the frame 1 in the drawing a holder 3 is fixed, which carries in a receiving bore a drive 4 with a longitudinally movable through this punch 5.
  • the punch 5 is located inside the drive 4 and has an end face perpendicular to its longitudinal axis 6, which acts on the punch rivet to be set in each case.
  • a loading device 8 which loads a feed tube 9 individually supplied punch rivets in a setting sleeve 10, in which they are in front of the end face of the punch 5 for the next joining operation be kept ready.
  • a tool holder 12 On the leg 7 of the frame 1, the drive 4 opposite a tool holder 12 is arranged, which carries at its free end a tool 13, on which the workpieces are supported during the joining and acting on the workpieces reshaping.
  • the tool holder 12 ensures by its axial length that the tool 13 is located at a distance from the leg 7 and thereby allows the joining of workpieces, in which the contact point for the tool 13 is arranged sunk.
  • the tool 13 has a longitudinal axis 14, which coincides with unloaded frame with the longitudinal axis 6 of the punch 5.
  • the surface of the tool 13 coming into contact with the workpiece during joining is designed as a surface of revolution about the longitudinal axis 14.
  • FIG. 1 the unloaded state of the frame 1 is indicated by dashed lines.
  • the solid lines show, for clarity greatly exaggerated, the joining device under heavy load, as occurs in the final phase when setting punch rivets.
  • both legs bend 37 of the frame 1 apart and thereby cause a change in position of the drive 4 and the tool 13 such that the longitudinal axes 6, 14 no longer coincide, but differ in their angular position of each other and form an angle ⁇ with each other, the Sum of the angular deviations of both longitudinal axes corresponds.
  • the angle ⁇ is also the angle that the faces of the punch 5 and tool 13 in this Form load condition with each other. It is therefore also called spread angle, since it indicates the extent to which the faces of the punch and tool are spread apart.
  • the tool holder is designed so that it undergoes an elastic deformation due to the load during joining, which at least partially compensates for the spreading of the legs of the frame.
  • the tool holder is provided in its center with a tapered region of lesser rigidity, which is designed so that the tool holder deforms under load in the manner of a buckling in a direction which reduces the spread on the end faces of Stamp and tool causes.
  • FIG. 1 Furthermore, it can be seen that the elastic deformation of the frame 1 due to the load during the joining leads to an offset x of the joint transversely to the direction of the joining force.
  • the offset x causes a load on the drive 4 and the brackets of the frame 1 by lateral forces and must therefore remain as small as possible.
  • forming the elastic deformation behavior of the tool holder under load and the offset x can be limited to an advantageously small value.
  • the tool holder 20 has a suitable elastic deformation behavior.
  • the tool holder 20 has a plate-shaped base 21 with a flat bottom surface 22 which serves to support on the leg of the frame.
  • the foot 21 has a rear, flatter portion 23 with a mounting hole 24 and a front, higher portion 25, a head 26th wearing.
  • the flatter section 23 merges steadily into the higher section 25.
  • a constricted portion 27 which is dimensioned so that the head 26 tends with increasing load in the joining device in the direction of the flatter portion 23 and thereby caused by spreading of the frame angle deviation of reduced by the head 26 tool.
  • the tool holder 20 has a bore 28 which penetrates the head 26, the region 27 and the portion 25 perpendicular to the bottom surface 22.
  • the bore 28 serves to receive a retaining pin of a mounted on the head joining tool.
  • the located in the foot 21 part of the bore 28 receives a centering pin, with which the tool holder 20 is centered on the leg of the frame coaxial with the punch of the drive.
  • a lateral threaded bore 29 in the head 26 is intended to receive a clamping screw, with which the pin of the tool is clamped in the bore 28.
  • In the bore 28 further opens a helical bore 30 through which a release tool for releasing the joining tool can be introduced.
  • FIG. 4 shows a tool holder 40 of compared to the tool holder 20 and the in FIG. 5 shown tool holder 50 medium length.
  • the tool holder 40 has a foot 41 and a head 46.
  • the foot 41 is in shape and size with the foot 21 and the head 46 in shape and size with the head 26 match.
  • the greater axial length of the tool holder 40 is based solely on the greater length of an extending between foot 41 and head 46 tapered cylindrical portion 47.
  • the stiffness of the region 47 is in this case matched to the axial length of the tool holder 40, that under the in the joining tool on the tool holder 40 acting load the head 46 undergoes a change in position, which partially compensates for the angular deviation caused by the spread of the frame.
  • the tool holder 50 in FIG. 5 also agrees with the tool holders 20 and 40 with respect to his foot 51 and his head 56. Its central, tapered region 57 is approximately twice as long as the region 47 of the tool holder 40 and adapted in its shape change behavior to the requirements arising at this axial length of the tool holder requirements.
  • the tool holders 20, 40, 50 together form a tool holder replacement which is designed for use in a specific joining device.
  • the design is carried out so that all three tool holder 20, 40, 50 in the joining tool at the same stress the same angular deviation between the longitudinal axes of the punch and tool, i. generate the same spread angle ⁇ .
  • FIGS. 6 to 8 The use of the tool holder set is based on the FIGS. 6 to 8 briefly explained. All three figures show the frame 1 of the basis of FIG. 1 described joining device in unloaded condition.
  • FIG. 6 is attached to the leg 7 of the frame 1 of the short tool holder 20.
  • the connected to the leg 2 holder 3, which can be mounted on the envelope, is in a first position in which the drive receiving portion has a smaller distance from the leg 7.
  • a distance L 1 is present between the head of the tool holder 20 and the holder 3.
  • the tool holder 20 is replaced by the tool holder 40. This reduces the distance between the head of the tool holder 20 and the holder 3 to the smaller distance L2.
  • FIG. 8 shows an embodiment in which the holder 3 is mounted in the second position in which its receiving portion has a greater distance from the leg 7 of the frame 1.
  • FIGS. 6 to 8 shown examples are intended for another application and optimal.
  • the three tool holders 20, 40, 50 in conjunction with the two mounting positions of the holder 3 allow six design variations.
  • With the help of the inventive design of the deformation behavior of three tool holders can be brought to a small value for all six design variations of the spread angle, which varies only slightly from variation to variation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
EP06120237A 2005-09-09 2006-09-06 Fügevorrichtung zum umformtechnischen Fügen Active EP1762315B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005043211A DE102005043211A1 (de) 2005-09-09 2005-09-09 Fügevorrichtung zum umformtechnischen Fügen

Publications (2)

Publication Number Publication Date
EP1762315A1 EP1762315A1 (de) 2007-03-14
EP1762315B1 true EP1762315B1 (de) 2010-03-03

Family

ID=37307325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06120237A Active EP1762315B1 (de) 2005-09-09 2006-09-06 Fügevorrichtung zum umformtechnischen Fügen

Country Status (5)

Country Link
US (1) US7971335B2 (ja)
EP (1) EP1762315B1 (ja)
JP (1) JP5048289B2 (ja)
DE (2) DE102005043211A1 (ja)
ES (1) ES2339585T3 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005095019A1 (en) * 2004-03-24 2005-10-13 Newfrey Llc Riveting system and process for forming a riveted joint
US8434215B2 (en) * 2008-08-05 2013-05-07 Newfrey Llc Self-piercing rivet setting machine
WO2015107350A1 (en) * 2014-01-16 2015-07-23 Henrob Limited Method of riveting
JP6380708B1 (ja) * 2017-02-06 2018-08-29 日本精工株式会社 フレーム構造、加工装置、部品の製造方法、転がり軸受の製造方法、車両の製造方法、機械の製造方法及びプレス装置

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Also Published As

Publication number Publication date
US7971335B2 (en) 2011-07-05
DE502006006316D1 (de) 2010-04-15
JP5048289B2 (ja) 2012-10-17
DE102005043211A1 (de) 2007-03-15
US20070056153A1 (en) 2007-03-15
ES2339585T3 (es) 2010-05-21
JP2007075894A (ja) 2007-03-29
EP1762315A1 (de) 2007-03-14

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