EP0360928A2 - Vorrichtung zum Schneiden eines Objektes entlang einer bogenförmigen Oberfläche - Google Patents

Vorrichtung zum Schneiden eines Objektes entlang einer bogenförmigen Oberfläche Download PDF

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Publication number
EP0360928A2
EP0360928A2 EP88202149A EP88202149A EP0360928A2 EP 0360928 A2 EP0360928 A2 EP 0360928A2 EP 88202149 A EP88202149 A EP 88202149A EP 88202149 A EP88202149 A EP 88202149A EP 0360928 A2 EP0360928 A2 EP 0360928A2
Authority
EP
European Patent Office
Prior art keywords
cutting means
carriers
blade
pivots
shaped
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Withdrawn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
EP88202149A
Other languages
English (en)
French (fr)
Other versions
EP0360928A3 (de
Inventor
Matheus Wilhelmus Vleeshouwers
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
Priority to NL8700594A priority Critical patent/NL8700594A/nl
Application filed by Individual filed Critical Individual
Priority to EP88202149A priority patent/EP0360928A3/de
Publication of EP0360928A2 publication Critical patent/EP0360928A2/de
Publication of EP0360928A3 publication Critical patent/EP0360928A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B19/00—Other reciprocating saws with power drive; Fret-saws
    • B27B19/006—Other reciprocating saws with power drive; Fret-saws with oscillating saw blades; Hand saws with oscillating saw blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/10—Making cuts of other than simple rectilinear form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/18—Toggle-link means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B19/00—Other reciprocating saws with power drive; Fret-saws
    • B27B19/006—Other reciprocating saws with power drive; Fret-saws with oscillating saw blades; Hand saws with oscillating saw blades
    • B27B19/008—Other reciprocating saws with power drive; Fret-saws with oscillating saw blades; Hand saws with oscillating saw blades having a plurality of saw blades or saw blades having plural cutting zones

Definitions

  • the invention relates to a device for cutting an object along an arc-shaped plane.
  • the purpose of the invention is therefore to obtain a device of the above kind wherein the passage of an object to be processed is not restricted to the distance between the arc-shaped cutting means and the centre of said circular arc.
  • the device is provided with a blade-shaped cutting means bent in the shape of a circular arc, which cutting means is connected at both its ends to a pair of carriers which can move forwards and backwards parallel and opposed to each other, in such a manner that as a result of the reciprocating movement of the carriers the blade-shaped cutting means oscillates about the centre of the circular arc formed by the cutting means.
  • the possibility for passing through an object which is to be processed by means of the arc-shaped cutting means is mainly determined by the distance between the carriers and the supporting means for said carriers, which can be arranged at a desired distance form the blade-­shaped cutting means, so that in this manner a considerable increase of the applications of a device provided with an arc-shaped cutting means can be obtained.
  • the device illustrated in fig 1 comprises a blade-shaped cutting means 1 which is bent in the shape of a circular arc having a radius r about a centre line which extends perpendicularly to the plane of the drawing, said centre line extending through the centre of curvature 2.
  • the ends of the cutting means 1, which may be formed by a knife or a saw, are coupled to the ends of rods 5 and 6 forming carriers by means of pivots 3 and 4.
  • the construction is thereby such that the pivots 3 and 4 form axes of rotation which extend parallel to the centre line of the arc-shaped cutting means 1 extending through the centre of curvature 2 and perpendicular to the plane of the drawing.
  • the ends of the rods 5 and 6 remote from the cutting means 1 are coupled by means of a pair of rods 7 and 8 extending parallel to each other, said rods 7 and 8 being pivotally coupled to the rods 5 and 6 in pivots 9, 10 and 11, 12 respectively.
  • Said pivots 9 - 12 form pivot pins which extend parallel to the pivot pins formed by the pivots 3 and 4.
  • the pivots 9 - 12, as well as the pivots 3, 4, 11 and 12, are thereby located in the corner points of a parallellogram.
  • the two rods 7 and 8 are each pivotally coupled to the frame of the device (not shown) in a point 13, 14 respectively, which is located centrally between the pivots 9, 10 and 11, 12 respectively, such that the coupling rods 7 and 8 can pivot in said points 13 and 14 about pivot pins which extend parallel to the pivot pins formed by the pivots 3 and 4.
  • the rod mechanism formed by the rods 5 - 8 can be set in motion about the pivots 13 and 14 by means of a driving mechanism (not shown), such that the rods 7 and 8 will pivot to and fro about the pivots 13 and 14, as indicated by means of the arrows A and B. It will be apparent that as a result of this movement of the rods 7 and 8 the rods 5 and 6 will be moved to and fro parallel to each other, which will result in a reciprocating movement according to arrow C of the arc-shaped cutting means 1 about the centre of curvature 2.
  • Said guide rods 15 and 16 are pivotally coupled to extensions of the coupling rods 7 and 8 in pivots 17, 18 and 19, 20 respectively, whereby also said pivots 17 - 20 form pivot pins which extend parallel to the pivot pins formed by the pivots 3 and 4. Furthermore the pivots 9, 11, 17 and 18, as well as the pivots 10, 12, 19 and 20, are again located in the corner points of a parallellogram thereby.
  • the ends of the guide rods 15 and 16 remote from the pivots 17, 18 and 19, 20 respectively are connected, by means of pivots 20 and 21 respectively, to coupling pieces 23 and 24, which couple the ends of the blade-shaped cutting means 1 to the guide rods 15 and 16 via the pivots 3 and 4.
  • the pivots 20 and 21 form pivot pins which extend parallel to the pivot pins formed by the pivots 3 and 4.
  • Another possibility is to provide a cutting means 1′, corresponding with the cutting means 1, between the carriers 5 and 6 in the manner illustrated in fig 3, said cutting means 1′ being connected to the carriers 5 and 6 and the guide rods 15 and 16 in a similar manner as the cutting means 1, using pivots 3′, 4′ and 20′, 21′.
  • the arrangement is thereby such that the centres of curvature 2 and 2′ of the two cutting means 1 and 1′ are located between the cutting means.
  • the device can be used particularly efficiently for producing objects made of expanded plastic material, such as shoulder pads.
  • a rectangular block of expanded plastic material can e.g. first be processed by means of the device diagrammatically illustrated in fig 3, whereby the block of expanded plastic material is passed between the carriers 5 and 6 perpendicularly to the plane of the drawing, so that two opposite sides of the block are provided with arc-shaped boundary edges.
  • the block is processed by means of a device as illustrated in fig 2, whereby not only the knife 1 can move to and fro in the direction according to arrow C, but whereby the knife with the carriers 5 and 6 and the rods coupled thereto can also pivot to and fro about a pivot pin 25 having a vertical arrangement, seen in fig 2, which pivot pin 25 perpendicularly crosses the centre line extending through the centre of curvature 2, around which centre line the knife 1 is bent in the shape of a circular arc.
  • the block provided with two rounded sides in the above manner is then moved mainly in a direction according to arrow D (fig 2), i.e.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Control Of Cutting Processes (AREA)
  • Nonmetal Cutting Devices (AREA)
EP88202149A 1987-03-12 1988-09-30 Vorrichtung zum Schneiden eines Objektes entlang einer bogenförmigen Oberfläche Withdrawn EP0360928A3 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL8700594A NL8700594A (nl) 1987-03-12 1987-03-12 Inrichting voor het langs een cirkelboogvormig vlak doorsnijden van een voorwerp.
EP88202149A EP0360928A3 (de) 1988-09-30 1988-09-30 Vorrichtung zum Schneiden eines Objektes entlang einer bogenförmigen Oberfläche

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88202149A EP0360928A3 (de) 1988-09-30 1988-09-30 Vorrichtung zum Schneiden eines Objektes entlang einer bogenförmigen Oberfläche

Publications (2)

Publication Number Publication Date
EP0360928A2 true EP0360928A2 (de) 1990-04-04
EP0360928A3 EP0360928A3 (de) 1990-06-20

Family

ID=8199862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88202149A Withdrawn EP0360928A3 (de) 1987-03-12 1988-09-30 Vorrichtung zum Schneiden eines Objektes entlang einer bogenförmigen Oberfläche

Country Status (1)

Country Link
EP (1) EP0360928A3 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE211647C (de) *
DE354343C (de) * 1922-06-08 Max Friedrich Vorrichtung zur Herstellung muldenartiger Ausnehmungen in Holz und aehnlichen Stoffen
DE738545C (de) * 1937-12-14 1943-09-25 Johann Seiwald Vorrichtung zum Herstellen von Fassdauben o. dgl.
US3060779A (en) * 1960-05-31 1962-10-30 Patrick M Taft Cutting apparatus
DE1175420B (de) * 1955-04-14 1964-08-06 W Scheermesser & Co K G Dr Maschine zum Schneiden von Formteilen aus weichem Material, z. B. Schaumstoff
FR1373374A (fr) * 1963-10-22 1964-09-25 Mec F Lli Zambon S N C Off Scie à mouvement alternatif notamment pour le sciage de marbres
US3491631A (en) * 1967-07-20 1970-01-27 Independent General Inc Foam material cutter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE211647C (de) *
DE354343C (de) * 1922-06-08 Max Friedrich Vorrichtung zur Herstellung muldenartiger Ausnehmungen in Holz und aehnlichen Stoffen
DE738545C (de) * 1937-12-14 1943-09-25 Johann Seiwald Vorrichtung zum Herstellen von Fassdauben o. dgl.
DE1175420B (de) * 1955-04-14 1964-08-06 W Scheermesser & Co K G Dr Maschine zum Schneiden von Formteilen aus weichem Material, z. B. Schaumstoff
US3060779A (en) * 1960-05-31 1962-10-30 Patrick M Taft Cutting apparatus
FR1373374A (fr) * 1963-10-22 1964-09-25 Mec F Lli Zambon S N C Off Scie à mouvement alternatif notamment pour le sciage de marbres
US3491631A (en) * 1967-07-20 1970-01-27 Independent General Inc Foam material cutter

Also Published As

Publication number Publication date
EP0360928A3 (de) 1990-06-20

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