EP0378601A1 - Outil composite - Google Patents

Outil composite

Info

Publication number
EP0378601A1
EP0378601A1 EP19890905611 EP89905611A EP0378601A1 EP 0378601 A1 EP0378601 A1 EP 0378601A1 EP 19890905611 EP19890905611 EP 19890905611 EP 89905611 A EP89905611 A EP 89905611A EP 0378601 A1 EP0378601 A1 EP 0378601A1
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting part
clamping
guide
polygon
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.)
Withdrawn
Application number
EP19890905611
Other languages
German (de)
English (en)
Inventor
Markus Stauffer
Martin Lemp
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.)
G Stauffer & Co AG Werkzeug-Und Vorrichtungsbau
Original Assignee
G Stauffer & Co AG Werkzeug-Und Vorrichtungsbau
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
Priority claimed from CH210088A external-priority patent/CH676102A5/de
Application filed by G Stauffer & Co AG Werkzeug-Und Vorrichtungsbau filed Critical G Stauffer & Co AG Werkzeug-Und Vorrichtungsbau
Publication of EP0378601A1 publication Critical patent/EP0378601A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/14—Punching tools; Punching dies

Definitions

  • the invention relates to a tool, in particular a punching tool according to the preamble of claim 1.
  • Metalworking tools are generally exposed to processing-specific loads, cutting tools other than punching tools, cutting tools other than striking tools and so on. As a result, the various tool manufacturers are located in narrow specialist areas and usually do not overlap.
  • stamping tools which area is the subject of the discussion here, l ⁇ further divisions into special areas have resulted.
  • the system tools are an example.
  • This type of punching tool is used exclusively on manual or numerically controlled punching and nibbling machines in which the tools are brought into the punching position by hand, by means of a revolver, chain magazine or similar conveyor systems. To do this, the tools used had to be adapted to such machines. Typically, this was done by chucking one conventional tool was adapted to the clamping device of such a machine.
  • System tools thus differ from the classic tools from which they originate, in many cases only in the position of the mounting diameter, which is precisely defined for the cutting shape, in the punch of the clamping shaft, in the die, in the outside diameter, and, if necessary, by additional adjustment notches or - cams and / or by handle or manipulation points at which such tools for automated changeover can be tackled and used with mechanical means.
  • the clamping shank within the grid is always the same size for different dimensions of the cutting part, which is directly related to a poor ratio between the volume of the cutting part and the total volume of the entire tool (for example 5% -15 %) leads.
  • Tools with small cutting dimensions therefore have a disproportionately large proportion of the shank, which, since the tool is in one piece, is also involved in the tool wear. Try to close the chuck from the cutting part Solving and making the latter interchangeable led to unsatisfactory results, so that one-piece punching tools are still the rule today. This applies above all to the tools in the lower punching area.
  • a tool system for a punching machine can be provided with interchangeable wear parts in all size gradations, with these interchangeable wear parts, the actual tool, being able to implement the cutting edge alignment in different radial positions without having to change the clamping position of the punch.
  • 1 shows part of a system tool (stamp) according to the prior art
  • 2 shows part of a system tool (stamp) according to the invention, with the same external dimensions, but with a detachable cutting part
  • FIG. 4 shows a schematic representation of the cutting part from above to make the angle adjustment possibility more visible
  • FIG. 5 shows a stamp with a releasable cutting part, which is designed for larger tool dimensions; in relation to length to width, it is square,
  • FIG. 6 shows, analogously to FIG. 3, part of the separable stamp according to the invention without the guide part
  • FIG. 7 shows, analogously to FIG. 4, the cutting part of a stamp, as shown in FIG. 5, seen from above,
  • FIG. 8 shows, as a further embodiment, a transition part or polygon part for implementing the cutting angle positioning
  • 11 shows the example of a cutting part according to the invention as it is offered to the buyer as a replacement part.
  • the invention is based on the following consideration. Tools, in particular punching tools, are exposed to enormous workers when high accuracy is required. Basically, these two demands run against each other. The interchangeability of the cutting edges that wear out is obvious to everyone, since the desired interchangeability requires a detachable connection that results in a weakening of the tool.
  • any measure of this type on the punch for attaching a holding device for the cutting part must either weaken the tool or impair its working accuracy or both. This also applies to measures for adjusting the cutting edge angle of the die, which impair the cross-section. If the punch can now be dismantled in such a way that the force flow during a punching process does not pass through a critical zone caused by the disassembly, so the dismantled (and detachably reassembled) stamp behaved almost the same as an undismantled stamp. It was therefore a challenge at the time of the invention to find a decomposition that met this criterion. If the design is also selected The fact that the orientation of the cutting tool can also be fixed in the desired direction when the cutting tool is inserted, and that the cutting part can be easily removed from its holder despite the numerous punching processes when changing the cutting edge, is the goal achieved.
  • the stamp shown in FIG. 1 is a one-piece stamp with a cutting part 1, a guide part 2 and a shaft part 3.
  • the guide part 2 has, in addition to a positioning pin 18, one, two or more circumferential grooves, lubricant chambers on the circumference 4, in which a lubricant depot is created.
  • the stamp runs with its guide part 2 in a stamp guide 6, only half of which is drawn, and it is clamped on a clamping thread 10 in a clamping nut 7.
  • the punch guide 6 is extended into a scraper 8 and between the clamping nut and the punch guide a scraper spring 9 is effective, which is compressed in FIG. 1 against its compressive force.
  • the cutting part 1 has just penetrated a workpiece 11 in this image and pushed a waste part 12 out of the workpiece. In the following moment the stamp will be withdrawn and the stripper will hold the clamped workpiece 11 in place so that it cannot be pulled up.
  • the force curve P from the clamping nut 7 to the cutting edge 1 runs at a stamp pressure in the same way as with a loaded column.
  • ⁇ system tools are tied to certain dimensions in their gradual coordination (the grid) in order to be able to systems can be clamped.
  • the guide part 2 In FIG. 1, it is the guide part 2 that is too large for the cutting part 1.
  • the angle adjustment of the cutting edge is particularly addressed here.
  • Figure 2 shows the exemplary embodiment of the stamp according to the invention. It essentially consists of three parts that can be separated from one another, a cutting part 1, a guide part 2 and a shaft part 3.
  • the shaft part 3 has an elongated clamping shaft 3 ', the clamping thread 10 is arranged at the upper end for clamping the tool and at the lower end A clamping thread 10 'is arranged at the end for clamping the cutting part 1'.
  • the shaft part 3 is shown again in FIG. 3, here screwed into a cutting part 1. If one now looks at the shaft part with the cutting part in FIG. 3, it can be seen that the shaft part mainly serves to connect the cutting part to the guide part.
  • the compressive forces (impact) are absorbed by the guide part and the tensile forces (retraction) by the shaft part.
  • the significantly lower transverse and torsional forces are exerted by the cutting edge via a polygon pin 16, here with the threaded hole for the clamping thread 10 '. passed on the guide part and intercepted by the locking pin 18.
  • the dimensioning of the locking pin already shows that these forces are small to very small in relation to the two axial punch forces.
  • the guide part 2 now has a central bore 13 through which the elongated clamping shaft 3 'is guided in order to hold the cutting part 1, which can now be released.
  • the guide part 2 can also provide a compressive force to the cutting part, it is provided, for example, with a conical shoulder 15 in which the clamping shaft 3, 3 'can be supported. This measure also protects the thread 10 'for fastening the cutting part 1 from excessive force.
  • the cutting part 1, 1 'itself is additionally supported on the guide part 2.
  • the flow of force through the guide part 2 will have a greater or lesser proportion. In this way, the guide part with its fixed diameter is used appropriately for the transmission of compressive forces, so that the disassembly brings additional advantages.
  • the - cutting part 1 with the cutting edge 1 ' is additionally supported on the guide part 2.
  • the tendon part 1 has a pin 16 which is designed as an n-corner, here, for example, as an octagon, see FIG. 4. It serves for centering and at the same time for adjusting the angle of the cutting edge.
  • FIG. 3 shows with the arrow a the angular adjustability of the cutting part by means of the polygon of the stamp, which as a rule is axially non-rotatable. This option saves the storage of several expensive tools.
  • the cutting part 1 can be seen from the polygon pin 16, that is to say from above.
  • the cutting edge 1 'of the cutting part 1 can be seen, which in the direction of the arrow a is in different positions of the octagonal pin, which in the guide tion part 2 find, can be positioned.
  • the positions ⁇ (0 °, 45 °, 90 ° etc.) can be realized and the resolution (smallest angle) is 45 °.
  • the resolution smallest angle
  • other angles and also a higher resolution small angle steps
  • a variety of angle settings can be achieved with the positive connection shown here. With this measure, a centering and angle adjustment mechanism "within" the stamp has been created.
  • the interchangeability of the cutting edges is brought about by disassembly, as shown in FIG. 5 and FIG. 6.
  • the interchangeability of the wear part and the angular distributability of the cutting part is also very desirable for tools of this size.
  • Figure 5 shows such a tool according to the invention with a cutting part 1 with an angle adjustment pin 16 (without a threaded hole), with a guide part 2, through which two clamping shaft extensions 3 'are guided for fastening the cutting part 1 and finally with the clamping shaft 3, which is in the guide part 2 is integrated in such a way that the clamping thread 10 for clamping the tool in the foot tion part is arranged.
  • the decomposition does not weaken the static properties.
  • a larger-sized angle adjustment pin 16 and two clamping shaft extensions 3 ' are advantageous, the latter being two screws in this example.
  • the angular adjustability, see FIG. 7, is likewise similar to that shown in FIG. 4, except that the pin 16 is arranged between threaded holes for the screws 10 ′ arranged in pairs opposite one another.
  • FIG. 5 shows with the arrow a the angular adjustability of the cutting part of the tool, which is inherently non-rotatable. This option also saves the storage of several expensive tools.
  • 7 shows the cutting part 1 from the polygon pin 16, that is to say from above.
  • This means that the positions ⁇ (0 °, 45 °, 90 ° etc., for the octagon) can be realized.
  • other angles can also be provided and, finally, a higher resolution of the angle setting can also be achieved by a different type of positive locking than shown here.
  • FIG. 8 shows such an embodiment for centering and angular adjustment of a cutting part with a higher resolution.
  • a polygon piece 16 ′ is additionally arranged above the polygon pin 16 and has an outer polygon on the outer circumference that deviates from the inner polygon.
  • Figures 9A, 9B, 9C show some of these possibilities.
  • FIG. 11 shows an example of a tendon part designed according to the first embodiment in a perspective view.
  • the polygon pin is designed as an octagon, the cutting edge as a rectangle.
  • the material volume ratio of the polygon pin 16 to the cutting part 1 ' is visibly favorable. If one considers that the material is a very hard and tough special alloy, one recognizes immediately the possibility of saving only through the relatively expensive tool material, of which much less has to be used now.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Earth Drilling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)

Abstract

L'outil est démontable, mais il est aussi résistant que l'outil d'une seule pièce. Grâce à cette possibilité de démonter l'outil, la partie soumise à usure, c'est-à-dire le couteau, peut être échangée. En outre, la partie coupante peut être placée dans une position angulaire déterminée, de sorte que pour différentes positions angulaires, un seul outil suffit, alors que jusqu'ici il fallait un outil pour chaque position angulaire. L'outil comprend une partie coupante (1), une partie de guidage (2) et une tige (3, 3'), ces différentes parties étant séparables les unes des autres. La partie coupante (1) présente une extrémité (16, 16') de forme adaptée à un logement correspondant pratiqué dans la partie de guidage (2). On peut ainsi centrer la partie coupante (1) et placer le couteau (1') dans une position angulaire déterminée (alpha).
EP19890905611 1988-06-02 1989-05-30 Outil composite Withdrawn EP0378601A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH2100/88 1988-06-02
CH210088A CH676102A5 (en) 1988-06-02 1988-06-02 Composite punching and stamping tool
CH30389 1989-01-30
CH303/89 1989-01-30

Publications (1)

Publication Number Publication Date
EP0378601A1 true EP0378601A1 (fr) 1990-07-25

Family

ID=25684167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890905611 Withdrawn EP0378601A1 (fr) 1988-06-02 1989-05-30 Outil composite

Country Status (4)

Country Link
EP (1) EP0378601A1 (fr)
JP (1) JPH02504490A (fr)
GB (1) GB2239830A (fr)
WO (1) WO1989011932A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04253528A (ja) * 1991-02-04 1992-09-09 Hoden Seimitsu Kako Kenkyusho Ltd パンチダイセット
DE19949554A1 (de) * 1999-10-14 2001-05-10 Mate Prec Tooling Gmbh Stanzstempel und Verfahren zu dessen Montage
DE10246591A1 (de) * 2002-10-05 2004-04-22 Daimlerchrysler Ag Stempelwerkzeug
US10265756B2 (en) 2012-02-06 2019-04-23 Mate Precision Tooling, Inc. Punch assembly with steel punch point insert removably secured therein
US8997617B2 (en) 2012-03-14 2015-04-07 Mate Precision Tooling, Inc. Punch assembly with quick attach punch point and stripper plate removably secure thereon

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086419A (en) * 1959-12-08 1963-04-23 Wiedemann Machine Company Adapter for punch tools
GB920672A (en) * 1961-01-09 1963-03-13 Saro Anglesey Ltd Improvements relating to punches
US3548700A (en) * 1968-03-21 1970-12-22 Houdaille Industries Inc Punch holder and drive assembly
CA996024A (en) * 1973-10-29 1976-08-31 Gerard G.F. Smeets Angularly adjustable punch adaptor
US3866459A (en) * 1974-02-08 1975-02-18 Hoover Co Top die shoe auxiliary restraint
CA1082097A (fr) * 1977-08-11 1980-07-22 Gerard G. F. Smeets Poincon et matrice reglables a divers angles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8911932A1 *

Also Published As

Publication number Publication date
WO1989011932A1 (fr) 1989-12-14
JPH02504490A (ja) 1990-12-20
GB2239830A (en) 1991-07-17
GB9002535D0 (en) 1990-08-22

Similar Documents

Publication Publication Date Title
EP0674560B1 (fr) Outil de forage a piece de coupe rapportee interchangeable
DE3108439C1 (de) Bohrwerkzeug, insbesondere Bohrstange
EP1321210B1 (fr) Outil de chanfreinage
DE10261748B4 (de) Stanzwerkzeug
DE828787C (de) Schneidwerkzeug
DE10219599B4 (de) Werkzeugspanneinrichtung
EP3741483A1 (fr) Plaquette de coupe, porte-plaquette et dispositif de coupe
EP1262266A1 (fr) Dispositif de fixation
DE4330174A1 (de) Drehbares Schneidwerkzeug
EP0378601A1 (fr) Outil composite
DE2112092A1 (de) Werkzeughalter
EP0229309A1 (fr) Dispositif de fixation intérieur de mandrin de serrage mou pour tour
DE3220363C2 (de) Fräsmesserkopf für Schruppbearbeitung
EP1124670A1 (fr) Massicot destine a couper des livres ou analogue
DE1502083A1 (de) Verbesserungen an Fraesern
DE3327676A1 (de) Vorrichtung zur befestigung einer matrize an einer werkzeugmaschine
CH676102A5 (en) Composite punching and stamping tool
DE3248202C2 (fr)
DE3805883C2 (fr)
EP0390096A2 (fr) Dispositif pour le bridage de pièces d'ouvrage
DE52100C (de) Verstellbare Reibahle
DE3929006C2 (fr)
DE3340320A1 (de) Modular-spannzeug und verfahren zum einspannen eines werkzeuges
DE20308159U1 (de) Drehstahlhalteschaft mit Wendeschneidplatte
DE2332019C3 (de) Schaltbarer Mehrfachwerkzeughalter

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900115

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19910610

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19920721