EP0269619B1 - Machines de rabotage du bois - Google Patents

Machines de rabotage du bois Download PDF

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Publication number
EP0269619B1
EP0269619B1 EP86904318A EP86904318A EP0269619B1 EP 0269619 B1 EP0269619 B1 EP 0269619B1 EP 86904318 A EP86904318 A EP 86904318A EP 86904318 A EP86904318 A EP 86904318A EP 0269619 B1 EP0269619 B1 EP 0269619B1
Authority
EP
European Patent Office
Prior art keywords
bed
workpiece
machine
cutter
thicknessing
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
Application number
EP86904318A
Other languages
German (de)
English (en)
Other versions
EP0269619A1 (fr
Inventor
Thomas 13 Moorsfield Fencehouse Robson
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.)
Wadkin PLC
Original Assignee
Wadkin PLC
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 GB858520563A external-priority patent/GB8520563D0/en
Priority claimed from GB868600488A external-priority patent/GB8600488D0/en
Application filed by Wadkin PLC filed Critical Wadkin PLC
Priority to AT86904318T priority Critical patent/ATE65733T1/de
Publication of EP0269619A1 publication Critical patent/EP0269619A1/fr
Application granted granted Critical
Publication of EP0269619B1 publication Critical patent/EP0269619B1/fr
Expired 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
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C1/00—Machines for producing flat surfaces, e.g. by rotary cutters; Equipment therefor
    • B27C1/08—Machines for working several sides of work simultaneously

Definitions

  • the invention relates to machines for planing and straightening lengths of timber.
  • rough square-sawn timber is surface planed and cut to a predetermined thickness at an early stage in its use in manufacture.
  • Such machines can similarly be used on a limited range of plastics and composite materials.
  • Timber planing machines comprise a bed and a fence providing a datum line along which a piece of timber is passed for planing.
  • Several cutters are generally provided for removing a large amount of wood from a single face of a piece of timber which is bowed or twisted, and/or for planing mutually perpendicular faces.
  • the need to force a workpiece into contact with a cutter makes it very difficult in practice to plane mutually parallel faces of a workpiece on a single pass through the machine.
  • At least three passes are generally required for a workpiece to be planed all round on a conventional single purpose planing machine, and this makes it necessary for the workpiece to be carried back to the input end of the machine after the second pass.
  • GB 1020571 illustrates in its Figures 5 to 7 a four sided planing and moulding machine.
  • Four or five cutter heads operate successively on a workpiece as it passes along a bed or table from right to left starting at driven presser rollers.
  • a first cutter trues the bottom of the workpiece and also the lower part of its edge, producing two datum faces by which the workpiece can be properly guided for later facing operations.
  • the table and fence are longitudinally divided to allow for adjustment of the depth of cut.
  • This machine is expensive to produce, and time-consuming to adjust, but satisfactory for producing large quantities of timber of the same cross section. In practice, it has proved limited to a maximum product cross section of 4 inches by 3 inches (about 100 mm by 75 mm).
  • GB 668988 relates to moulding planes which work the four sides of a plank with cutters arranged on crossed shafts, two sides being worked on each of two passes through the machine in opposite directions and at different levels.
  • This plane is suitable for profiling or shaping a plank, particularly for cutting tongues and grooves, but cannot be used for straightening because it does not include a bed for supporting a workpiece. It has feed rollers at the side from which the workpiece is fed, and does not include an extractor as is necessary for the large quantity of chips produced in straightening.
  • the invention comprises a machine for planing and straightening lengths of timber comprising a bed, an infeed face on the bed, a thicknessing table at a level below the bed, an outfeed face on the thicknessing table, mutually perpendicular spindles for cutter blocks adjacent the bed and the thicknessing table, a first one of the spindles extending below the bed, a second one of the spindles extending across the bed from one side of the first spindle to the other, a feed mechanism for conveying a workpiece along the bed where two mutually perpendicular straight faces of the workpiece are cut by the blocks, the feed mechanism being beyond the first spindle with respect to the passage of the workpiece along the bed, means for conveying the workpiece along the thicknessing table so that the workpiece is thicknessed by the cutting blocks, and an extractor for removing chips produced during the straightening and thicknessing of the workpiece.
  • the workpiece In operation, on a first pass through the machine, the workpiece is planed on two mutually perpendicular faces by parts of cutter blocks adjacent to and extending over the bed. On a second pass back through the machine at the lower level, the other two faces are planed by parts of the cutter blocks below the bed and extending to the side of the first cutter block remote from the first pass.
  • Two operators one at each end of the machine, can maintain a high level of activity passing workpieces through the machine once in each direction for planing on all four faces.
  • the sensor of rotation of the cutters if correct for the first pass, is automatically correct for the second.
  • the means for feeding the workpiece past the cutter blocks at the lower level is preferably a conveyor belt. This is suitable for maintaining the necessary pressure to keep the workpiece in contact with the second cutter block which extends across the bed.
  • the conveyor belt makes it possible to use idler rollers to maintain the pressure to feed the workpiece, and consequently to do without driven rollers in this part of the machine.
  • driven rollers could be used to feed the workpiece over a thicknessing table at the lower level.
  • the machine may be provided with spindles for more than one cutter block to plane any face of a workpiece.
  • a moulding attachment may be provided at either end of the machine, and is preferably adjustable in all directions in order to mould the workpiece as required. The proximity of the essential two cutter blocks to each other facilitates the extraction from the machine of the chips produced in operation.
  • the spindles do not themselves actually each carry two cutter blocks; that is one above and one below the machine bed and one to each side of the other spindle.
  • Either or both of the mutually perpendicular spindles drives a cutter block which is offset from the spindle itself. Any combination of such arrangements on either or both of the spindles may be provided according to customer requirements.
  • the machine comprises a bed or infeed table 1, and a fence 2 along which a workpiece is passed for planing.
  • the workpiece passes to an outfeed table 3 and an outfeed fence 4.
  • the workpiece is then placed on a lower or thicknessing table 5 against a fence 6 where it is passed back through the machine and planed on the remaining two sides.
  • a main cutter block 7 extends across the infeed table 1 and over the thicknessing table 5.
  • a side cutter block 8, perpendicular to the main cutter block 7 and adjacent the infeed table 1, extends below the table 1 for planing the side of the workpiece in the thicknessing or second pass through the machine.
  • the workpiece is generally introduced onto the table 1 by an operator to the left of Figure 1, and conveyed through the machine on a first pass by a feed mechanism 11 beyond the main cutter block 7.
  • the workpiece planed on the first two sides is then removed from the outfeed table 3, generally by a second operator. standing to the right of Figure 1.
  • the second operator then places the workpiece on the thicknessing table 5, which comprises a conveyor belt on which the workpiece is held in contact by the pressure of idler rollers 43 ( Figure 5).
  • the workpiece is conveyed along the fence 6 to the left in Figure 1 as it is thicknessed or planed on the remaining two sides by the parts of the cutter block 7 extending across the table 1 beyond the side cutter block 8, and of the block 8 extending below the table 1.
  • the cutter blocks 7, 8 are driven respectively through belts 17, 18 from electric motors 27, 28.
  • the thicknessing table conveyor 5 is driven by an electric motor 29.
  • the machine comprises a structurally rigid plinth 30 mounted on a box base 31.
  • the infeed table 1 is mounted on a frame member 32 by swing links 33 for varying the depth of cut taken by the main cutter block 7.
  • the fence 2 is adjustable on swing links to vary the depth of cut taken by the side cutter block 8.
  • the outfeed table 3 is equipped with a fine adjustment handle 34 for levelling the table to the main cutter block 7, for example on re-setting after changing cutter knives.
  • the second sectional view from the thicknessing side in Figure 5 shows how the frame member 32 is supported on the plinth 30 by four screws 38, one at each corner, and only two of which appear in Figure 5, one in section and the other covered by a protective bellows 39.
  • the screws 38 are linked by a, chain 40 so that the frame 32 can be raised or lowered at one time by adjustment of the screw 38 through the chain 40 and a handle 41 to give the required finished thickness of the timber.
  • the fence 6 is adjusted along a fence bar to give the required finished width.
  • FIG. 4a there is no planer side cutter block 8 above the table 1 to the right of the centre of the machine.
  • the thicknesser side cutter block 8 can however still be seen below the table 1. More detail is visible in Figure 5a, where it can be seen that the spindle on which the cutter block 8 is mounted extends upward by the side of the extractor 16 and has a pulley wheel 50 keyed thereon.
  • the pulley wheel 50 drives a belt 52 to rotate a further spindle 54 which carries a planar side cutter block 9.
  • the planer side cutter block 9 is to the outfeed side of the main cutter block 7, while in the former embodiment of Figure 4 the planer side cutter block 8 was to the infeed side of the main cutter block 7.
  • a lower face of a workpiece is planed first to provide a flat datum surface.
  • the spindle driving the main cutter block 7 may similarly drive a subsidiary spindle parallel to but offset from itself, and the subsidiary spindle may carry a cutter block for planing a part of a surface different from that planed by the block 7.
  • the spindles carrying the cutter blocks 7, 8 may be provided with a subsidiary offset spindle.

Claims (5)

1. Machine pour raboter et dégauchir des longueurs de pièces de bois, comprenant un banc (1), une règle d'arrivée (2) sur le banc (1), une table de mise à épaisseur (5) située à un niveau inférieur au banc (1), une règle de sortie (6) sur la table de mise à épaisseur (5), des broches perpendiculaires l'une à l'autre pour des blocs de coupe (7, 8) adjacents au banc (1) et à la table de mise à épaisseur (5), une première broche s'étendant en dessous du banc (1), une deuxième broche s'étendant en travers du banc (1) depuis un côté de la première broche jusqu'à l'autre côté, un mécanisme d'avance (11) pour transporter une pièce à usiner le long du banc (1) où deux faces rectilignes perpendiculaires l'une à l'autre de la pièce sont usinées par les blocs (7, 8), le mécanisme d'avance (11) se trouvant au-delà de la première broche par rapport au passage de la pièce le long du banc (1), des moyens pour transporter la pièce le long de la table de mise à épaisseur (5), de telle sorte que la pièce est mise à épaisseur par les blocs de coupe (7, 8), et un extracteur (16) pour enlever les copeaux produits lors du dégauchissage et de la mise à épaisseur de la pièce.
2. Machine selon la revendication 1, dans laquelle les moyens sont une bande transporteuse.
3. Machine selon la revendication 2, dans laquelle il y a un rouleau fou (43) pour maintenir la pression pour faire avancer la pièce le long de la bande transporteuse (5).
4. Machine selon l'une des revendications précédentes, dans laquelle l'extracteur (16) enlève les copeaux produits par les deux blocs de coupe (7, 8).
5. Machine selon l'une des revendications précédentes, dans laquelle l'une ou l'autre des broches perpendiculaires l'une à l'autre, ou les deux broches, entraînent un bloc de coupe (9) qui est décalé par rapport à la broche elle-même.
EP86904318A 1985-08-16 1986-07-22 Machines de rabotage du bois Expired EP0269619B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86904318T ATE65733T1 (de) 1985-08-16 1986-07-22 Hobelmaschinen fuer holz.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB858520563A GB8520563D0 (en) 1985-08-16 1985-08-16 Timber planing machines
GB8520563 1985-08-16
GB8600488 1986-01-09
GB868600488A GB8600488D0 (en) 1986-01-09 1986-01-09 Timber planing machines

Publications (2)

Publication Number Publication Date
EP0269619A1 EP0269619A1 (fr) 1988-06-08
EP0269619B1 true EP0269619B1 (fr) 1991-07-31

Family

ID=26289670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86904318A Expired EP0269619B1 (fr) 1985-08-16 1986-07-22 Machines de rabotage du bois

Country Status (6)

Country Link
EP (1) EP0269619B1 (fr)
AT (1) ATE65733T1 (fr)
AU (1) AU593272B2 (fr)
CA (1) CA1265025A (fr)
DE (1) DE3680673D1 (fr)
WO (1) WO1987001067A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5041288A (en) * 1986-05-15 1991-08-20 Emory University Method of treating tissue damaged by reperfusion injury
US5030448A (en) * 1986-05-15 1991-07-09 Emory University Method of delivering drugs to damaged or diseased tissue
US5032394A (en) * 1986-05-15 1991-07-16 Emory University Method of treating burns
US5071649A (en) * 1986-05-15 1991-12-10 Emory University Method of preventing blockage in catheters
FR2659590B1 (fr) * 1990-02-05 1993-09-10 Somafin Cmd Sarl Machine pour la decoupe en continu de chevrons.
DE102006009421A1 (de) 2006-02-23 2007-09-06 Michael Weinig Ag Kehlmaschine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE146984C (fr) *
FR570916A (fr) * 1923-09-20 1924-05-09
GB668988A (en) * 1950-04-28 1952-03-26 Lauri Johannes Aittomaki Improvements in or relating to moulding planes
GB809670A (en) * 1955-08-03 1959-02-25 Stenbergs Maskinbyra Ab Wood planing machine
DE1017361B (de) * 1956-03-14 1957-10-10 Maschb Scholz Komm Ges Dicktenhobelmaschine mit einer in unmittelbarer Naehe der Messerwelle auf der gleichen Seite des Werkstuecks gegen das Werkstueck wirkenden Druckrolle
DE1227635B (de) * 1960-03-23 1966-10-27 Festo Maschf Stoll G Stabfraesmaschine fuer die Holzbearbeitung
GB1020571A (en) * 1961-01-30 1966-02-23 Wadkin Ltd Woodworking machinery
US4440204A (en) * 1982-08-16 1984-04-03 Shopsmith, Inc. Planer mounting system
IT1212927B (it) * 1983-06-09 1989-12-07 Scm Finanz Piallatrice a spessore perfezionata

Also Published As

Publication number Publication date
CA1265025A (fr) 1990-01-30
AU6149086A (en) 1987-03-10
AU593272B2 (en) 1990-02-08
EP0269619A1 (fr) 1988-06-08
WO1987001067A1 (fr) 1987-02-26
DE3680673D1 (de) 1991-09-05
ATE65733T1 (de) 1991-08-15

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