EP3589432A1 - Stanzstempel - Google Patents
StanzstempelInfo
- Publication number
- EP3589432A1 EP3589432A1 EP18700339.7A EP18700339A EP3589432A1 EP 3589432 A1 EP3589432 A1 EP 3589432A1 EP 18700339 A EP18700339 A EP 18700339A EP 3589432 A1 EP3589432 A1 EP 3589432A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- punch
- punching
- workpiece
- tool
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 14
- 238000004080 punching Methods 0.000 claims description 65
- 238000000034 method Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
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
- 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
- B21D35/007—Layered blanks
-
- 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
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/003—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools
Definitions
- the present invention relates to a punch, a punch, a punching tool, a punching set and a method of punching.
- a punch extends from a first section to a second section along a punching direction, wherein the second portion having a cutting edge, and wherein between the first portion and the second portion, an engagement portion is provided or formed, which allows removal of the punch from a workpiece against the punching direction.
- the engagement portion directly on the punch by the engagement portion given a way to extract the punch after punching from the workpiece or push or remove, for which purpose a suitable tool is used and not the punch itself.
- the engaging portion is preferably circumferential and, looking at an overall length of the punch, also arranged approximately centrally, which benefits the stability of the punch.
- the punch is short in relation to its diameter, which effectively can be avoided tearing off alone by the basic shape of the punch.
- the second section which forms or comprises the cutting edge, is round, in particular circular, or also oval, triangular, quadrangular, or generally polygonal, etc.
- the first portion is round or in particular circular, but may also have different geometries.
- Typical diameters of the second portion and a circular cutting edge are in a range of about 2-12 mm, preferably in a range of about 4-10 mm.
- a length of the punch is about 10-40 mm, preferably about 15-20 mm.
- a diameter or a diagonal of the cutting edge is feasible.
- a ratio of a length of the punch to its diameter in a range of about 1 to 10, more preferably in a range of about 1 to 6 or even in a range of about 1 to 4.
- the diameter is in particular the diameter of the second From- Section or the cutting edge meant or the corresponding diagonal, if the cross section is not circular.
- typical cutting materials for example of metal and / or ceramic
- metal such as.
- steel or carbide e.g., steel or carbide.
- Hardened tool steel is particularly preferred because of its ease of manufacture, low tendency to break, and acceptable wear resistance.
- High speed steel, such as HSS, is also suitable, especially since the wear resistance is higher than with tempered tool steel, but the tendency to break is higher and the production more expensive.
- the engagement portion is round in cross-section, in particular circular, wherein the engagement portion has at least one circumferentially arranged engagement element, which is oriented inclined along the longitudinal axis of the punch.
- the engagement element may be formed as a front and / or recess, which extends substantially obliquely to the longitudinal axis.
- the engagement element as a groove or slot or as a web, etc. is formed.
- the engagement section or the at least one engagement element is designed or constructed in such a way that a circumferential force applied to the engagement section by a tool, which acts on the engagement section or on the at least one engagement element substantially tangentially and transversely to the longitudinal axis, into a force is converted or deflected, which counteracts the punching direction acts on the punch, whereby ultimately a pushing out or pushing out of the punch is made possible from the workpiece after punching.
- the force which acts circumferentially on the engagement section does not have a punctiform effect on its geometry, but rather preferably peripherally, which in particular results in a very exact withdrawal or pressing along the longitudinal axis, without jamming or the like.
- the engagement portion is formed as a thread.
- the thread is a metric thread, for example an M8 thread.
- a diameter of the first portion is smaller than an outer diameter of the engagement portion.
- This configuration facilitates the arrangement of a stamp receiving device as described below or a (peeling) tool, which is to be applied to the engagement portion, in particular on the thread, for removing the punch from a workpiece.
- the tool or the punch holder
- the tool can be easily slid over the first section, then screwed it, for example, in the case of a thread.
- a diameter of the second portion is smaller than an outer diameter of the engagement portion. This advantageously makes it possible to use a simply constructed removal tool, which will be described in more detail below.
- the first portion for example, frontally and / or circumferentially on an engagement region for the arrangement of a tool.
- a slot, a cross slot or a hexagon socket is arranged frontally, which serves for the arrangement of a corresponding tool.
- the first section can also be shaped in such a way that, for example, a nut can be attached.
- the engagement area serves to unscrew the punch, for example, from a puller or, depending on the configuration of a corresponding punch receptacle for arrangement in the same.
- the punch is designed such that the first section also has a cutting edge.
- the first and the second section optionally have a different diameter or a different geometry, so that different contours can be punched with a punch.
- the two cutting edges are also formed the same, wherein the punch can be reversed when one of the edges is worn etc.
- the invention is also directed to a punch mandrel comprising a punch according to the invention and a punch holder, in which the punch is arranged or can be arranged.
- an extension in particular in the form of a tip or a cone, is arranged or provided on the front side on the second section.
- the punching forces can advantageously be reduced.
- Other advantages of the tip are the centering effect between punch and die and the centering / positioning when attaching to the
- the punch can be arranged positively and / or non-positively in the punch holder.
- a possibly circumferential groove is provided, which cooperates with a spring-loaded ball or a snap ring, which is provided in the punch holder.
- the punch is arranged or can be arranged in the punch receptacle via the engagement section, in particular therefore via the thread.
- the punch is screwed into the punch holder.
- the punch holder is expediently designed such that the second portion of the punch completely or at least partially protrudes from the punch holder along the punching direction.
- the stamp receiver comprises or forms a pressure shoulder, wherein the pressure shoulder essentially forms or comprises a support surface which extends perpendicularly or substantially perpendicularly or transversely to the longitudinal axis and is designed to transmit the punching force, completely or at least partially, from the punch holder on the punch, in particular on the first section to ensure.
- the invention is also directed to a punching tool comprising a punch mandrel according to the invention.
- the punching tool is a hand-held device, as used for example in workshops for vehicle or body repair of motor vehicles.
- the basic structure of such a tool, comprising a die, etc., is known in the art and therefore will not be further described herein.
- the invention is further directed to a punching set comprising a punching tool according to the invention and a removal tool, wherein the removal tool has an arrangement section corresponding to the engagement section of the punch and a stop.
- the arrangement section is expediently designed as a thread corresponding to the engagement section.
- the puller tool is adapted to effect by rotation a withdrawal or pressing of the punch from a workpiece.
- This extraction or pressing is effected, in particular, by the fact that the removal tool projects beyond the stop, in particular special on the workpiece or the workpiece surface itself, which is punched, can support.
- the tangential or circumferentially acting force which is acted upon by the rotation of the Abziehwerkmaschines and which would generally cause the Abziehwerkmaschine moves in the direction of the workpiece surface, converted / deflected in a force which counter to the punching direction Punch out.
- the removal tool is at least partially sleeve-shaped or substantially sleeve-shaped, wherein the stop is formed as a stop surface end on the sleeve.
- the stop surface is annular and oriented substantially perpendicular to the longitudinal axis.
- the arrangement section is, as already mentioned, designed as a threaded section, wherein the arrangement section is preferably at least as long, for example 1, 5 or 2 times as long as the engagement section.
- the invention is further directed to a method for punching, in particular for punching sheets, in particular multi-layer and possibly also high-strength sheets, wherein a punch is used, which initially remains in the workpiece after punching, wherein the punch has circumferentially an engaging portion, and wherein the punch is removed by means of the engagement portion after punching out of the workpiece counter to a punching direction.
- the method comprises the step that, after the actual punching operation, a punch holder, which serves for the arrangement of the punch during punching, is removed, in particular, unscrewed in the case of a threaded engaging portion. In the workpiece or in the punched hole is then only the punch.
- the method expediently comprises the steps:
- the removal of the stamping punch against the punching direction is thus effected by the geometry or the interaction of the stamping punch with the removal tool. It is particularly advantageous here that a force is generated by the use of the Abziehtechnikmaschines or the interaction of the arrangement portion with the engaging portion of the punch, which acts exactly or substantially exactly along the longitudinal axis. In this respect, no tilting or the like of the punch occurs, which on the one hand, the quality of the punched hole is good and on the other hand, the forces necessary for removing low holds.
- the punching tool according to the invention for the punch mandrel according to the invention, the punching set according to the invention as well as for the inventive Procedures apply the advantages mentioned in connection with the punch and features analogous and corresponding as well as vice versa and with each other. Further advantages and features will become apparent from the following description of a punch or a punch mandrel or a punching tool or a method with reference to the accompanying figures.
- FIG. 2 shows the configuration from FIG. 1 after the punching process
- Fig. 3 the known from Figures 1 and 2 punch, as it is arranged in the workpiece after punching;
- Fig. 4 the interaction of a puller with that of the
- FIG. 5 shows the removal tool known from FIG. 4 with the punch completely removed from the workpiece
- Fig. 6 another embodiment of a punch.
- Fig. 1 shows in a perspective view, and shown partially in section, a punch mandrel, comprising a punch holder 20, in which a punch 10 is arranged.
- the entire arrangement extends along a longitudinal axis L, wherein a punching direction is sketched by the reference symbol S and the corresponding arrow.
- the punching mandrel is attached to a workpiece 50, for example on a (multilayer) sheet metal. assigns, wherein opposite the punching mandrel a die 60 on the workpiece or sheet 50 rests.
- the punch 10 comprises a first portion 1 1 and a second portion 12, wherein an engagement portion 16 is disposed therebetween.
- this has an external thread or is formed as a thread, which, however, is not shown in the illustration sketched here for reasons of clarity.
- the second section 12 comprises a round, in particular circular, cutting edge 14, while the first section 11 has an engagement region 40, which can be seen in FIG. 1 as a small slot.
- the reference numeral 22 is further outlined a pressure shoulder of the punch holder 20, which serves to distribute the punching force, which is finally transmitted via the punch holder 20 in or on the punch 10, evenly distributed (and for example not only on the engaging portion 16 of the punch 10).
- FIG. 2 essentially shows the configuration known from FIG. 1 after the punching process.
- the punch 10 has penetrated the workpiece 50 in this view and formed a punched block 52, which is trapped by the die 60, for example, or can be.
- the punch holder 20 can now be removed from the punch 10, which is inserted in the workpiece 50, in particular be unscrewed.
- Fig. 3 shows the punch 10 after removal of the punch receiving 20.
- the engaging portion 16 which is preferably designed as a thread or includes a thread, a removal of the punch 10 against the punching direction S.
- a removal tool 30 is now arranged on the punch 10.
- the removal tool 30 is screwed on, wherein for this purpose it has an arrangement section 32, which has a geometry corresponding to the engagement section 16, in the present case, therefore, preferably designed as an internal thread.
- the removal tool 30 has in the sentlichen a sleeve shape, wherein it ends along the punching direction S frontally in a stop or a stop surface 34 which rests against a surface of the workpiece 50. This forms, so to speak, the opposite stop. If the punch holder 30 is further rotated in this configuration, the punch 10 is moved out of the workpiece 50 counter to the punching direction S.
- this advantageously has an engagement region 40 'which serves, for example, for the arrangement of an open-end wrench. While the threads of the engaging portion 16 and the arrangement portion 32 according to preferred embodiments, for. B. is an M8 thread, is a wrench size of the engagement portion 40 'z. B. 27 mm.
- FIG. 5 shows how the punch 10 is now removed from the workpiece 50 counter to the punching direction S, it being well understood that, in particular by the arrangement or support of the removal tool 30 via the stop surface 34 on the workpiece 50, an exact moving out along the longitudinal axis L is possible without jamming or the like. About an engaging portion 40 in the punch 10 this can now be easily unscrewed from the punch holder 30. It can also be seen in this view, in particular in comparison to FIG. 4, that the arrangement section 32 is significantly longer than the engagement section 16, thereby ensuring that the punch 10 is held securely in the punch seat 30 even after removal from the workpiece 50 is.
- Fig. 6 shows another embodiment of a punch 10, comprising a first portion 1 1, an engagement portion 16 and a second portion 12.
- the end face of the second portion 12, which forms a cutting edge 14, a tip 15 is provided or arranged, whereby the Stamping forces can be reduced, since the flow properties of the workpiece are thereby positively influenced.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017203231.6A DE102017203231A1 (de) | 2017-02-28 | 2017-02-28 | Stanzstempel |
PCT/EP2018/050651 WO2018157983A1 (de) | 2017-02-28 | 2018-01-11 | Stanzstempel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3589432A1 true EP3589432A1 (de) | 2020-01-08 |
EP3589432B1 EP3589432B1 (de) | 2023-03-01 |
Family
ID=60957320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18700339.7A Active EP3589432B1 (de) | 2017-02-28 | 2018-01-11 | Stanzstempel |
Country Status (4)
Country | Link |
---|---|
US (1) | US11192166B2 (de) |
EP (1) | EP3589432B1 (de) |
DE (1) | DE102017203231A1 (de) |
WO (1) | WO2018157983A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3112092B1 (fr) * | 2020-07-03 | 2023-01-13 | Gys | Outil de poinconnage d’une tole ou d’un assemblage multi-couches de toles et procede de poinconnage correspondant. |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1093338A (de) * | 1955-05-03 | |||
FR1093388A (de) | 1955-05-03 | |||
IT1289814B1 (it) * | 1996-12-27 | 1998-10-16 | Rainer Srl | Macchina per la punzonatura di lamiere. |
US1784911A (en) | 1927-05-06 | 1930-12-16 | Jr Michael J Schlitters | Tool-retaining device |
US1969426A (en) * | 1933-05-25 | 1934-08-07 | Ross Frank Joseph | Tool and extractor |
US2221904A (en) * | 1938-01-24 | 1940-11-19 | Greenlee Bros & Co | Metal punch |
DE1993915U (de) | 1968-07-03 | 1968-09-19 | Muhr Und Bender | Schnellwechselfutter, insbesondere fuer stanzstempel. |
GB2084066A (en) * | 1980-09-25 | 1982-04-07 | Warner Michael John | Improvements in or relating to punches |
US4380871A (en) * | 1981-06-11 | 1983-04-26 | Ex-Cell-O Corporation | Mechanical punch driver |
US4487566A (en) * | 1983-07-11 | 1984-12-11 | Barna Alex J | Punching tool having interchangeable punches |
CN202224532U (zh) * | 2011-09-29 | 2012-05-23 | 广州市启泰模具工业有限公司 | 数控冲床模具上模装置 |
US9138799B2 (en) * | 2011-10-17 | 2015-09-22 | Standard Lifters, Inc. | Modular pilot assembly with self-contained stripper and method for metal forming dies |
ITMI20120406A1 (it) * | 2012-03-15 | 2013-09-16 | Cembre Spa | Contatto elettrico permanente applicabile sull'anima di rotaie e simili |
JP6458655B2 (ja) * | 2015-06-11 | 2019-01-30 | 新日鐵住金株式会社 | 穴抜きパンチの刃先の観察方法 |
CN105363894A (zh) * | 2015-12-07 | 2016-03-02 | 吴中区光福良盛机械厂 | 一种易拆卸的冲孔凸模及起拔器 |
-
2017
- 2017-02-28 DE DE102017203231.6A patent/DE102017203231A1/de not_active Withdrawn
-
2018
- 2018-01-11 EP EP18700339.7A patent/EP3589432B1/de active Active
- 2018-01-11 WO PCT/EP2018/050651 patent/WO2018157983A1/de unknown
-
2019
- 2019-08-27 US US16/551,939 patent/US11192166B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US11192166B2 (en) | 2021-12-07 |
WO2018157983A1 (de) | 2018-09-07 |
EP3589432B1 (de) | 2023-03-01 |
US20190381554A1 (en) | 2019-12-19 |
DE102017203231A1 (de) | 2018-08-30 |
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