EP0266623B1 - Oberer Werkzeugträger für eine Stanze od. dgl. - Google Patents

Oberer Werkzeugträger für eine Stanze od. dgl. Download PDF

Info

Publication number
EP0266623B1
EP0266623B1 EP87115366A EP87115366A EP0266623B1 EP 0266623 B1 EP0266623 B1 EP 0266623B1 EP 87115366 A EP87115366 A EP 87115366A EP 87115366 A EP87115366 A EP 87115366A EP 0266623 B1 EP0266623 B1 EP 0266623B1
Authority
EP
European Patent Office
Prior art keywords
punching tool
cap
tool
punch
pot
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.)
Expired - Lifetime
Application number
EP87115366A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0266623A3 (en
EP0266623A2 (de
Inventor
Wilhelm Dipl.-Ing. Jung
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.)
Muhr und Bender KG
Original Assignee
Muhr und Bender 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 Muhr und Bender KG filed Critical Muhr und Bender KG
Priority to AT87115366T priority Critical patent/ATE66838T1/de
Publication of EP0266623A2 publication Critical patent/EP0266623A2/de
Publication of EP0266623A3 publication Critical patent/EP0266623A3/de
Application granted granted Critical
Publication of EP0266623B1 publication Critical patent/EP0266623B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/04—Movable or exchangeable mountings for tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders

Definitions

  • the invention relates to an upper tool carrier for a punch or the like. According to the preamble of claim 1.
  • the punching tool ie punch, punch holder and union nut
  • the punch can be released from the punch holder with the punch removed or the punch can even be exchanged for another punch for a short time, with the punch then being replaced at a different location, for example in a spare parts store.
  • the closing pot available for opening and closing the tool holder can be opened or closed by rotating the outer pot around the inner pot.
  • the sealing pot is opened when the insertion slots of the inner pot and the outer pot are aligned with one another, in particular are directed towards the end face of the carrier body.
  • the sealing pot is closed by rotating the insertion slot in the outer pot from the front.
  • the longitudinal axis of the punch tool coincides with the known, previously explained tool carrier with the longitudinal axis of the inner pot of the sealing pot, the outer pot and the inner pot are thus arranged coaxially to one another.
  • the guide surfaces on the inner pot and on the outer pot form a play seat or play seats with the punching tool here, so that the punching tool is securely held and guided in the sealing pot, but cannot jam. It has now been shown, however, that difficulties sometimes arise in operation due to the fact that the outer pot rotates unintentionally relative to the inner pot, and that the sealing pot even opens in very rare cases unintentionally. It is obvious that this is an unsatisfactory property of the known upper tool carrier.
  • the invention is based on the object of designing and developing the known, previously explained upper tool carrier for a punch or the like in such a way that particularly secure mounting and guidance of the punching tool in the sealing pot is ensured.
  • the upper tool carrier according to the invention for a punch or the like, in which the above-mentioned object is achieved, is described by the features of claim 1.
  • a slight eccentricity is realized between the outer pot and the inner pot of the sealing pot, which has an effect at least on the opposite guide surfaces on the inner pot and on the outer pot.
  • FIG. 1 shows a schematic representation, in sections, in a perspective view of an area of a machine tool, here a hole punch, an upper tool holder 1 and a lower tool holder 2 assigned to the upper tool holder 1 being clearly visible here. It is also possible to see a punch 3 which has just been pulled out of the upper tool carrier 1 and which, in the exemplary embodiment shown and preferred here, consists of a punch 4, a punch holder 5 and a union nut 6 connecting the punch 4 to the punch holder 5. A carrier body 7 of the upper tool carrier 1 and a closure pot 8 fastened to the carrier body 7 can be seen, which, as can be clearly seen in the upper region in FIG.
  • the exemplary embodiment of an upper tool carrier 1 shown here which corresponds to the state of the art, shows a punching tool 3 which is essentially circular or circular in cross section.
  • Fig. 2 shows that the punch holder 5 of the punch 3, which is shown here, has a diameter of approximately 46 mm at the lower end and a diameter at the upper end 60 mm. 2 also shows that the punch 3 used here, by way of example only, has a one-sided extension 9 at the upper end, that is to say at the upper end of the punch holder 5.
  • the punch 3 is not only circular or annular at the upper end in the exemplary embodiment shown here, but is provided with an asymmetrical extension 9, which can be seen particularly well in FIG. 3, and which serves to prevent the punch 3 from rotating unintentionally in the sealing pot 8 to prevent.
  • the radii of curvature of the punch 3 in this area are larger on the outside of the extension 9 than on the opposite outside.
  • the sealing pot 8 shown in a side view in FIG. 4 and in a top view in FIG. 5 surrounds the upper part of the punch 3 or the upper part of the punch holder 5 and has a fixed inner pot 10, fixed relative to the carrier body 7, and one the longitudinal axis of the punch 3 rotates with respect to the inner pot 10 and the inner pot 10 includes the outer pot 11.
  • the inner pot 10 has a lateral insertion slot 12 for the punch 3, surrounds the inserted punch 3 in a plane transverse to the longitudinal axis of the punch 3 on three sides and thus forms a three-sided guide for the punch 3. This is from a comparison of Fig. 5 and Fig. 3 clearly.
  • the extension 9 of the punch 3 engages in the slot 12 in the inner pot 10 in any case at the upper end and the outer circumference of the inner pot 10 is practically closed by the outer surface of the extension 9 of the punch 3.
  • the outer pot 11 also has a lateral insertion slot 13 for the punching tool 3 and, after rotation relative to the inner pot 10, comprises the inserted punching tool 3 in the plane transverse to the longitudinal axis on the fourth side, so that the guide of the punching tool 3 after rotation of the outer pot 11 is opposite the inner pot 10 is closed.
  • at least the guide surface 14 on the inner pot 10 opposite the open side and the guide surface 15 on the outer pot 11 closing the open side on the inner pot 10 are formed in a circular arc, in coordination with the circular arc-shaped design of the corresponding outer surfaces at the upper end of the punching tool 3.
  • Fig. 5 is now exaggerated that the circular arc centers 16, 17 of the guide surfaces 14, 15 on the inner pot 10 and on the outer pot 11 do not coincide, but are apart by a certain amount - eccentricity - that is, the circular arc center 17 of the guide surface 15 on the outer pot 11 lies on the side of the circular arc center 16 of the guide surface 14 on the inner pot 10 facing away from the open side on the inner pot 10. It is thereby achieved that by rotating the outer pot 11 relative to the inner pot 10, the guide surface 15 on the outer pot 11 comes to rest on the outer surface of the extension 9 of the punch 3 or directly on the punch 3 and presses the punch 3 into the guide formed by the inner pot 10 . As a result, the punching tool 3 is held and guided firmly and securely in the sealing pot 8, in particular the outer pot 11 cannot rotate unintentionally with respect to the inner pot 10.
  • Fig. 5 makes it clear that in the preferred embodiment shown here, the arc center 17 of the guide surface 15 on the outer pot 11 is centered on the open side of the inner pot 10.
  • spring-loaded pressure pieces can be provided between the outer pot 11 and the inner pot 10, and that the eccentricity of the centers of the circular arcs 16, 17 is maintained by the pressure pieces without a punch 3 inserted.
  • the outer pot 11 is thus biased by the pressure pieces relative to the inner pot 10 into the position predetermined by the eccentricity of the circular arc centers 16, 17.
  • the punch 3 When the outer pot 11 rotates with respect to the inner pot 10, the punch 3 does not become with its upper end only pressed by the inherent elasticity of the outer pot 11 or between the outer pot 11 and the inner pot 10 into the guide formed on the inner pot 10, but this pushing into the guide on the inner pot 10 occurs resiliently, namely by means of the action of the spring-loaded pressure pieces.
  • the measure of the eccentricity of the centers of the arcs 16, 17 must of course be determined as precisely as possible. It has proven to be particularly expedient that the eccentricity is 0.05 mm to 0.2 mm, preferably and in the exemplary embodiment shown here is approximately 0.1 mm. That is sufficient considering the given tolerances.
  • the guide surfaces 14, 15 on the inner pot 10 and outer pot 11 of the sealing pot 8 form a guide for the upper end of the punch 3 or the punch holder 5.
  • the guide formed for the punch 3 can extend relatively far downward from the upper end of the punch 3.
  • these guide surfaces 14, 15 can then only extend in the region of the extension 9 at the upper end of the stamp holder 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Forging (AREA)
EP87115366A 1986-11-04 1987-10-21 Oberer Werkzeugträger für eine Stanze od. dgl. Expired - Lifetime EP0266623B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87115366T ATE66838T1 (de) 1986-11-04 1987-10-21 Oberer werkzeugtraeger fuer eine stanze od. dgl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863637487 DE3637487A1 (de) 1986-11-04 1986-11-04 Oberer werkzeugtraeger fuer eine stanze od. dgl.
DE3637487 1986-11-04

Publications (3)

Publication Number Publication Date
EP0266623A2 EP0266623A2 (de) 1988-05-11
EP0266623A3 EP0266623A3 (en) 1990-01-31
EP0266623B1 true EP0266623B1 (de) 1991-09-04

Family

ID=6313104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115366A Expired - Lifetime EP0266623B1 (de) 1986-11-04 1987-10-21 Oberer Werkzeugträger für eine Stanze od. dgl.

Country Status (4)

Country Link
EP (1) EP0266623B1 (es)
AT (1) ATE66838T1 (es)
DE (2) DE3637487A1 (es)
GR (1) GR3002644T3 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104148509B (zh) * 2014-08-28 2016-08-17 航天精工股份有限公司 一种偏心紧固件的成形模具及成形方法
DE102015116562A1 (de) 2015-09-30 2017-03-30 Tkr Spezialwerkzeuge Gmbh Hydraulisches Stanzgerät sowie Stanzstempelträger für Stanzgerät

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7227912U (de) * 1972-12-14 W Whitney Corp Stanzwerkzeughalter an Stanzpressen
DE7121633U (de) * 1971-08-26 Peddinghaus P Spannvorrichtung fur Stanzen
GB191209274A (en) * 1912-04-19 1913-04-17 William Thomas Phillips An Improved Nut Lock.
FR1217394A (fr) * 1959-02-19 1960-05-03 Dispositif de serrage
DE1552102A1 (de) * 1966-04-29 1969-11-20 Trumpf & Co Schneid- und/oder Stanzmaschine mit in einem Werkzeugstoessel angeordneten auswechselbaren Stanz- oder Schneidwerkzeug
SE339643B (es) * 1970-03-09 1971-10-11 Bofors Ab
US4419026A (en) * 1980-08-28 1983-12-06 Alfonso Leto Internal locking device for telescopic elements and method of making the same
DE3441457A1 (de) * 1984-11-13 1986-05-15 Kraftwerk Union AG, 4330 Mülheim Einrichtung zur verdrehsicherung an auf wellen aufgeschrumpften radscheiben und verfahren zu ihrer herstellung

Also Published As

Publication number Publication date
EP0266623A3 (en) 1990-01-31
DE3637487C2 (es) 1988-08-18
ATE66838T1 (de) 1991-09-15
DE3772712D1 (de) 1991-10-10
EP0266623A2 (de) 1988-05-11
DE3637487A1 (de) 1988-05-19
GR3002644T3 (en) 1993-01-25

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