EP0315281B1 - A device for working on work-pieces by means of pressure - Google Patents

A device for working on work-pieces by means of pressure Download PDF

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Publication number
EP0315281B1
EP0315281B1 EP88202451A EP88202451A EP0315281B1 EP 0315281 B1 EP0315281 B1 EP 0315281B1 EP 88202451 A EP88202451 A EP 88202451A EP 88202451 A EP88202451 A EP 88202451A EP 0315281 B1 EP0315281 B1 EP 0315281B1
Authority
EP
European Patent Office
Prior art keywords
pressure
fixing
distance
axis
pivot
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
EP88202451A
Other languages
German (de)
French (fr)
Other versions
EP0315281A3 (en
EP0315281A2 (en
Inventor
Petrus Armin Michiel Marie Cooymans
Original Assignee
Petrus Armin Michiel Marie Cooymans
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 to NL8702647A priority Critical patent/NL8702647A/en
Priority to NL8702647 priority
Application filed by Petrus Armin Michiel Marie Cooymans filed Critical Petrus Armin Michiel Marie Cooymans
Publication of EP0315281A2 publication Critical patent/EP0315281A2/en
Publication of EP0315281A3 publication Critical patent/EP0315281A3/en
Application granted granted Critical
Publication of EP0315281B1 publication Critical patent/EP0315281B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/06Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/002Drive of the tools

Description

  • The invention is related to an apparatus as for example known from EP-A-0 088 152 for manufacturing work pieces using pressure, such as bending, punching etc, said apparatus comprising principally a fixing surface and a carrier with respect to the table, for a thereon affixed pressure device such as a hydraulic cylinder.
  • An apparatus of the type described in the preamble is usually used for a single pressure stroke, for example the punching of work pieces, where the direction of the stroke is not suitable for pipe bending. The invention aims at providing a similar apparatus which is universal but nevertheless constructionally simple.
  • Thereto the invention provides an apparatus wherein the carrier is adapted to an axis parallel to the table, crossing the pressure axis of the pressure device.
  • Thanks to the pivoting, the pressure device can be brought under any desired angle regarding the table. Especially in the first position wherein the pressure line falls vertically on the table, and in the second position wherein it runs parallel thereto.
  • Other features and advantages of the invention will be evident from the detailed description of an embodiment herebelow.
  • In the drawing is:
    • Fig. 1: A plan view in perspective of the apparatus according to the invention wherein the pressure axis of the pressure device is vertical to the table.
    • Fig. 2: A similar perspective plan view to fig. 1 whereby the pressure axis of the pressure device runs parallel to the table.
  • In the figures a support table is indicated with the number 1, which can be mounted on any frame in any way desired.
  • The surface of the table 1 serves as a fixing surface 2, for the work piece to be machined. An example of which will be illustrated later hereunder.
  • A pivoting support 3 in the shape of a U shaped yoke straddles the table 1, so that the vertical cheeks or arms 4, of the yoke 3, are situated on either side of the table 1.
  • The free end of each arm posesses two through holes, 5, 6, through which a pivot pin 7 extends into the side of the table 1, and a locking pin 8 respectively. The two pivot pins 7 on both sides of the table form a hinge or pivot line A-A which runs parallel to the fixing surface 2 of the table 1. In the indicated construction the line A-A runs at a determined distance below the fixing surface 2, which distance is equal to the distance D between the front edge of the pivot arm 4, and the pivot line A-A. In the indicated construction each arm is also S or Z shape constructed, such that the body 9 of the yoke 3 springs out above the fixing table 1 with regard to the axis A-A.
  • This body plate 9 carries a pressure unit 10, in the form of a hydraulic cylinder which is operated via a pressure source 11, and a two way valve 12. The cylinder ram 13 moves up and down on a line B-B in figure 1.
  • According to a feature of the invention the pressure line B-B crosses the pressure line A-A, whereby the distance between these two lines is at least equal to distance D.
  • In the indicated construction it is greater than D.
  • This gives the advantage that the workpiece W on the fixing table can project on both sides of the table beyond the arms 4, whereby a movement of the workpiece is possible in the direction P1.
  • If the ram 13 of the cylinder 10 is fitted with a punch tool, and the fixing surface of 2 of the fixing table 1 is fitted with an anvil, then a punch unit is created very simply with the arrangement shown in fig. 1.
  • It will be noticed that the punch tool can be simply and easily fastened to the fixing table 2 using dowels 15 and the pre-drilled holes 16 in the table.
  • Naturally other punch units can be fitted to the fixing table 2 at suitable positions.
  • In the shown position of the apparatus the ram 13 of the cylinder 10 can naturally be fitted at will with any pressure tool for the thereon appropriate position.
  • Fig. 2 shows the apparatus in fig. 1 in an other position whereby the yoke 3 is pivoted counter clockwise following the arrow P2. This pivoting can be achieved by removing the locking pin 8 from the hole 6, lowering the yoke thereafter, and replacing locking pin 6 in the arm 4 in a second hole 17, in the side of the table 1.
  • In this position the cylinder 10 with ram 13 lies in such a way, that the pressure line B-B runs parallel to the fixing surface 2 of the table 1. Seeing that the distance between the pivot line A-A and the fixing surface of the table 1 is equal to distance D, the front of arm 4 lies level with or under the fixing surface of the table 1, so that the workpiece can project beyond the yoke arms 4.
  • This is indicated by a tubular workpiece W that is supported by two blocks 19, mounted at a distance from each other.
  • The ram 13 can push against the side of the workpiece W along a line B-B, whereby a bending action takes place.
  • It is clear that other support blocks 19 can be mounted on the fixing surface 2, making use of bolts and the tapped holes. Naturally, any suitable fixing method is possible.
  • The invention is not limited to the embodiment described above. Within the scope of the invention it is possible to give the yoke 3 another form, for example, as a projecting yoke with single arm, or an arm shaped other than the indicated S or Z shapes.

Claims (3)

  1. An apparatus for the manufacturing of workpieces using pressure, such as bending, punching etc, said apparatus comprising principally a fixing surface (2), a carrier (3) having a pressure unit (10) fitted thereon such as a hydraulic cylinder, and adjustable in relation to the fixing surface (2), characterized in that the carrier (3) is adapted to be pivoted about an axis (A-A), parallel to the fixing surface (2) and crossing the pressure axis (B-B) of the pressure unit (10).
  2. An apparatus according to claim 1, characterized in that the carrier (3) is provided with one or two pivot arms (4), the side edge thereof nearest to the pressure axis (B-B) is located at a certain distance from the pivot axis (A-A), said pivot axis (A-A) extending for a least one half of said distance underneath the table surface.
  3. An apparatus according to claim 1 or 2 characterized in that the distance between the offset crossing pressure and pivot axes (A-A) is at least equal to half said distance.
EP88202451A 1987-11-05 1988-11-03 A device for working on work-pieces by means of pressure Expired - Lifetime EP0315281B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL8702647A NL8702647A (en) 1987-11-05 1987-11-05 Device for pressure working of workpieces.
NL8702647 1987-11-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT88202451T AT79311T (en) 1987-11-05 1988-11-03 Device for workpiece processing by pressure.

Publications (3)

Publication Number Publication Date
EP0315281A2 EP0315281A2 (en) 1989-05-10
EP0315281A3 EP0315281A3 (en) 1990-07-11
EP0315281B1 true EP0315281B1 (en) 1992-08-12

Family

ID=19850873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88202451A Expired - Lifetime EP0315281B1 (en) 1987-11-05 1988-11-03 A device for working on work-pieces by means of pressure

Country Status (6)

Country Link
EP (1) EP0315281B1 (en)
AT (1) AT79311T (en)
DE (1) DE3873693T2 (en)
ES (1) ES2034171T3 (en)
GR (1) GR3005488T3 (en)
NL (1) NL8702647A (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191504109A (en) * 1915-03-16 1916-03-02 William Waller Improvements in Stamping Presses.
CH384501A (en) * 1959-09-26 1964-11-15 Hydrodyn Ag Multipurpose device
GB887160A (en) * 1960-03-03 1962-01-17 Lucien Dard Improvements in or relating to apparatus for bending tubes, bars and metal sections
FR1348147A (en) * 1963-02-14 1964-01-04 Cold bending device
US3724256A (en) * 1970-08-20 1973-04-03 A Kroetch Tube bender and cutter
DE2620016A1 (en) * 1976-05-06 1977-11-17 Daniel Pierre Gargaillo Punching stamping and rivetting appts. - has link which moves blank holder, holding blank against die during working stroke
IT1198357B (en) * 1982-03-08 1988-12-21 Doret Bernard Matthey Pipe punching and / or bending unit, particularly suitable for allowing the punching of holes with transversal axes and / or bending with curvatures that are not coplanar with each other

Also Published As

Publication number Publication date
DE3873693T2 (en) 1993-03-18
DE3873693D1 (en) 1992-09-17
EP0315281A3 (en) 1990-07-11
NL8702647A (en) 1989-06-01
EP0315281A2 (en) 1989-05-10
AT79311T (en) 1992-08-15
GR3005488T3 (en) 1993-05-24
ES2034171T3 (en) 1993-04-01

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