EP0045956A2 - Dispositif de poinçonnage - Google Patents

Dispositif de poinçonnage Download PDF

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Publication number
EP0045956A2
EP0045956A2 EP81106193A EP81106193A EP0045956A2 EP 0045956 A2 EP0045956 A2 EP 0045956A2 EP 81106193 A EP81106193 A EP 81106193A EP 81106193 A EP81106193 A EP 81106193A EP 0045956 A2 EP0045956 A2 EP 0045956A2
Authority
EP
European Patent Office
Prior art keywords
opening
stripper
oil
chamber
scraper
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Withdrawn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
EP81106193A
Other languages
German (de)
English (en)
Other versions
EP0045956A3 (fr
Inventor
Ferdinand Dietz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0045956A2 publication Critical patent/EP0045956A2/fr
Publication of EP0045956A3 publication Critical patent/EP0045956A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • B21D45/006—Stripping-off devices

Definitions

  • the invention relates to a punching tool according to the preamble of the main claim.
  • Punching tools this. Type are known (DE-PS 26 37 085 and US-PS 3 670 613).
  • the punch waste or is supplied via the compressed air supplied to the chamber above the stripper opening, which, when the punch is withdrawn, passes through the channel opening into the wall of the stripper opening into the space between the punch face and punch hole the stamped part ejected.
  • the channel opening into the chamber can be, for example, a bore formed in the wall of the wiper or can be formed by at least one groove which is open towards the wiper opening and formed in the wall of this wiper opening.
  • the channel could also be formed by the fact that there is not a close fit between the punch and the scraper, but rather a relatively large clearance and that the compressed air is supplied to the end face of the scraper through this annular gap.
  • the compressed air is supplied to the chamber, for example, via channels in the stamp.
  • the type of channel guide in this known punching tool ensures that the compressed air can only be effective when the part to be ejected is punched out. So a kind of valve effect is achieved and it automatically becomes un indirectly after completion of the punching process and the beginning of the retraction of the stamp, compressed air is brought into effect on the punching waste or the punched part and thereby the punched waste or the punched part is expelled from the die arranged below the punching tool by the compressed air.
  • By enriching the compressed air with oil in this known punching tool the parts that are particularly subject to wear can be cooled and lubricated at the same time.
  • the principle according to the invention can be applied per se to all punching tools with a scraper, but it is particularly advantageous in combination with a punching tool of the type mentioned at the outset, in which a compressed air supply via channels in the scraper is provided for expelling the punching waste and in the case of the appropriate design of these compressed air ducts, the valve effect mentioned occurs, because if these ducts, which are intended for the supply of compressed air, are also used to supply the oil to the oil collection pocket, this valve effect can also be used for the oil inflow and oil can only flow to the oil collection pocket if it is Channels are open when the stamp is withdrawn.
  • Fig. 1 shows a punch 1 with a scraper 7, the punch 4 cooperates with a die 3.
  • the punch 1 is arranged, for example, together with other similar punch on a turntable of a numerically controlled punching machine.
  • the scraper 7 has in its end face 8, which is flat and rests on the surface of the workpiece 5, an opening 9 in which the punch 4 is slidably guided with tight play.
  • a channel 16 is formed, which is connected to a compressed air source 14 and opens via its channel section 18 into a chamber 19 between the stamp guide section 6 and the lower closed end of the scraper 7.
  • additional compressed air channels are guided, which open into or above the end face 8 from the wall of the wiper opening 9 in this wiper opening 9.
  • these compressed air channels are designed as grooves 20 formed in the wall of the wiper opening 9, which on the one hand open into the chamber 19 and on the other hand into the end face of the wiper 7 .
  • These compressed air ducts can also be designed in the sense of the exemplary embodiment: according to FIGS. 3 and 4 as bores 22 which open openings 23 in the end face 8 of the scraper 7.
  • These compressed air channels do not necessarily have to open into the end face 8 of the scraper, they can also only be guided up to shortly before the end face 8, so that the compressed air supply is only possible after the plunger 4 has been pulled back past these openings.
  • the compressed air is supplied from the source 14 enriched with oil. It is sufficient to enrich the compressed air with oil at certain time intervals, for example to inject some oil into the channel 16 after every tenth punching stroke. This oil drop then reaches the space 19 atomized via the channel 16 and from there via the compressed air channels to the moving tool parts.
  • At least one oil collecting pocket extending over the entire circumference of the stamp 4 is formed in the wall of the wiper opening 9 which guides the stamp 4.
  • this oil collecting pocket is formed by an annular groove 15 in the wall of the wiper opening 9, which extends over the entire circumference of the stamp 4.
  • this annular groove 15 is connected to the space 19 via the grooves 20 and the oil-air mixture is thereby supplied to it.
  • oil collects in this annular groove 15, which produces and maintains an oil film on the circumference of the stamp 4.
  • the stamp is therefore sufficiently lubricated and cooled by the oil.
  • several such ring grooves 15 can also be arranged one above the other along the stamp path in order to improve the lubricating effect thereby.
  • This design of the oil collection pockets as ring grooves is particularly suitable for rectangular stamp cross sections.
  • a spiral groove can be formed in the wall of the stripper opening 9, which extends like a thread between the space 19 and the end face 8 of the stripper and in this case can also serve as a supply channel for the compressed air for ejecting the punching waste .
  • several such spiral grooves can of course also be formed in the wall of the wiper opening in the manner of a multi-start thread. If, in the sense of the exemplary embodiment according to FIG.
  • the compressed air channels are designed as additional bores 22 in a punching tool, which only open in the end face 8 of the wiper into grooves 23 leading to the wiper opening 9, additional connecting channels must be between These oil collecting pockets 15 and the chamber 19 can be provided, via which oil can get into the pockets 15.
  • an additional connecting channel 16 ' is provided according to FIG. 3, but preferably either additional through bores 16' according to FIG. 4 opening into the chamber 19 are provided, or the channels 22 according to FIGS. 3 and 4 are so wide offset inwards that they cut the oil collection pockets 15, that is to say for the compressed air supply.
  • provided channels 22 also serve to supply oil at the same time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Punching Or Piercing (AREA)
  • Details Of Cutting Devices (AREA)
EP81106193A 1980-08-09 1981-08-07 Dispositif de poinçonnage Withdrawn EP0045956A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803030231 DE3030231A1 (de) 1980-08-09 1980-08-09 Stanzwerkzeug
DE3030231 1980-08-09

Publications (2)

Publication Number Publication Date
EP0045956A2 true EP0045956A2 (fr) 1982-02-17
EP0045956A3 EP0045956A3 (fr) 1982-09-22

Family

ID=6109293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106193A Withdrawn EP0045956A3 (fr) 1980-08-09 1981-08-07 Dispositif de poinçonnage

Country Status (2)

Country Link
EP (1) EP0045956A3 (fr)
DE (1) DE3030231A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619522A1 (fr) * 1987-08-20 1989-02-24 Weber Ernest Outil de poinconnage a lubrification integree
FR2627710A1 (fr) * 1988-02-05 1989-09-01 Amada Co Ltd Poinconneuse a poincon lubrifie
GB2361453A (en) * 2000-01-27 2001-10-24 Victor Ken Seng Wu Lubrication device adapted to be used in a punching machine
EP2158983A2 (fr) * 2008-09-02 2010-03-03 ThyssenKrupp Drauz Nothelfer GmbH Procédé et dispositif destinés au lubrifier un dispositif de pliage
US20100199819A1 (en) * 2007-05-22 2010-08-12 Amada Company, Limited Slug float-up preventing method and punch tool
CN104797356A (zh) * 2012-11-19 2015-07-22 株式会社Uacj 扩管插塞及金属管的扩管方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020003605A1 (de) 2020-06-17 2021-12-23 Alfons Anton Klabes Schnittstempel mit umlaufenden ständig schmierenden Öltaschen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB688365A (en) * 1951-11-05 1953-03-04 Clarke Built Ltd Improvements in or relating to press tools
US2789922A (en) * 1952-05-24 1957-04-23 Stewart Warner Corp Method and apparatus for applying a thin film of liquid
US2821156A (en) * 1951-12-05 1958-01-28 Lyon George Albert Die
DE2637085A1 (de) * 1976-08-18 1978-02-23 Rohde & Schwarz Vorrichtung zum ausstossen des stanzabfalles oder stanzteils bei einem stanzwerkzeug mit abstreifer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB688365A (en) * 1951-11-05 1953-03-04 Clarke Built Ltd Improvements in or relating to press tools
US2821156A (en) * 1951-12-05 1958-01-28 Lyon George Albert Die
US2789922A (en) * 1952-05-24 1957-04-23 Stewart Warner Corp Method and apparatus for applying a thin film of liquid
DE2637085A1 (de) * 1976-08-18 1978-02-23 Rohde & Schwarz Vorrichtung zum ausstossen des stanzabfalles oder stanzteils bei einem stanzwerkzeug mit abstreifer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619522A1 (fr) * 1987-08-20 1989-02-24 Weber Ernest Outil de poinconnage a lubrification integree
FR2627710A1 (fr) * 1988-02-05 1989-09-01 Amada Co Ltd Poinconneuse a poincon lubrifie
GB2361453A (en) * 2000-01-27 2001-10-24 Victor Ken Seng Wu Lubrication device adapted to be used in a punching machine
GB2361453B (en) * 2000-01-27 2003-10-15 Victor Ken Seng Wu Lubrication device adapted to be used in a punching machine
US20100199819A1 (en) * 2007-05-22 2010-08-12 Amada Company, Limited Slug float-up preventing method and punch tool
EP2158983A2 (fr) * 2008-09-02 2010-03-03 ThyssenKrupp Drauz Nothelfer GmbH Procédé et dispositif destinés au lubrifier un dispositif de pliage
EP2158983A3 (fr) * 2008-09-02 2010-03-24 ThyssenKrupp Drauz Nothelfer GmbH Procédé et dispositif destinés au lubrifier un dispositif de pliage
CN104797356A (zh) * 2012-11-19 2015-07-22 株式会社Uacj 扩管插塞及金属管的扩管方法

Also Published As

Publication number Publication date
DE3030231A1 (de) 1982-02-18
EP0045956A3 (fr) 1982-09-22

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