US1703007A - Fixed-knife drawer for planing machines - Google Patents

Fixed-knife drawer for planing machines Download PDF

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Publication number
US1703007A
US1703007A US200210A US20021027A US1703007A US 1703007 A US1703007 A US 1703007A US 200210 A US200210 A US 200210A US 20021027 A US20021027 A US 20021027A US 1703007 A US1703007 A US 1703007A
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US
United States
Prior art keywords
knife
drawer
holder
planing
fixed
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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
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US200210A
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English (en)
Inventor
Johnson Carl Johan Axel
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.)
J & Cg Bolinders Mek Verkst AB
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J & Cg Bolinders Mek Verkst AB
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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
    • B27C1/002—Machines for producing flat surfaces, e.g. by rotary cutters; Equipment therefor with non-rotating tools

Definitions

  • the present invention refersto. an arrange cuttings of a greater or smaller thickness.
  • the adjustment generally yhas been effected ⁇ ,by'impartingblows to the knife :at rear edge, that is toI say at the; edge opposite to the cuttingA edge, so that the knife would be moved.inr.its'own plane andalongl its support..
  • This methodof procedure'1 has required greaty skilly and practice, particu# larly as the adjustments: arefor'such small measures as..0,03 ⁇ to 0,2 millimeters. Great importance is ⁇ also. .tobe attached .to the euttingedge ofk the vknife.eide/nding.1in parallel to the working'plane after.
  • r he-arrangement Y isprincipa;lly character.- ized by. the provision of; a knife ,holder for the'plaing knife, .which holder isA movable and guided inthewdrawer infsuch amanner that, .when theknifeholder is displaced in; the' drawer, the cutting'fedge of the knife is raised or lowered relatively to thatportion of the drawer in front of the knife which Coineides with the working. plane.
  • the arrangement is preferably devised zin such mannerthat the'knife holder is adapted vto be displaced to and fro in the longitudinal direction. of ⁇ he cutting edge -of the knife along, a .gi-iidev which is not parallel to thel working plane of the. drawenso that; the
  • the' knife holder may be rotatable inthe drawer, the axis of .rotation.entendi-ng,y parallel to thecutting edge. of.; the knife, which will thus be raised or lowered when the knife holder: is turned.
  • the rotary move-y ment mayzbe brought about bythe provisionof a thread orlhejlicalslotin the' holder, said slot or thread haring agreat pitch, astudzor thelikefxed in .the'drawerbeifng adapted. to engage said-thread lorgslot..
  • thek'nite holder Whenthek'nite holder is displaced in ,the longitudinal direction, itis turnedat thefsanietine through the action ofthe stud inthehelical slot.y
  • ' l is an elevation. of a;l iife-.,drawer.devised according to theinventiom the knife holder being displaceable to and froin the drawer. f
  • Fig.V 4. also shows across section: of vtheknife .drawer inserted in its place in the planing' machlne Fig. G'shows the/sam'e-knife drai'verviewed from above..
  • Fig. 7 shows across section; of the' knife vdrawer accordingtolligs. .5 andltl 1 designates the part formingl the knife drawer, said partbeing, adapted to be' los'ely vinsertedfinlo apocket shaped in ageorrespondling inannerand .provided in the; fraineof the maehine, as shown in Eig.y et, said pocket belng provided with guideraijls Zadapted to support.thedrawen. According-to Fig.- 4, a l
  • 3 denotes a work piece actuated by pressure rollers l.
  • 5 is the knife holder adapted to be 'displaced to and fro in the knife drawer l, said knife holder having a. lil-shaped cross section, as shown in Figs. 3 and il, enclosing a correspondingly shaped part of the drawer, said latter part with its sliding surfaces 6 and 7 forming an oblique angle with the working plane 8 of the drawer, as illustrated in 1.
  • the screw 9 which is adapted with its inner threaded end to be screwed in the knife holder 5, said screw serving for displacement of the knife holder.
  • the planer knife 19 proper consists of a thin lamina of a small width, said lamina. bearing rigidly against a. support in the knife holder where it is retained by the break iron 11 adapted to be fixed by a. nut 12 threaded onto a lined. screw 13 attached in the knife holder 5 and extending through the break iron 11.
  • the break iron 11 adapted to be fixed by a. nut 12 threaded onto a lined. screw 13 attached in the knife holder 5 and extending through the break iron 11.
  • Fig. 3 one or merescrews 14 at the rear edge Cil ofthe break iron, said screws being adapted to be screwed in the break iron and to be turned in the knife holder 5 by means of flanges 15 engaging the knife holder through a rotary movement.
  • the knife 10 may be adj usted per se, that is to say independently of the break iron, in that it bears against special screws 16 adapted to be screwed in members 17 sunk into the knife holder 5.
  • planing knife need never, pointed out hereinbefore, be actuated per se, a further conditionr of the greatest importance will be available for obtaining an entirely plane and smooth surface on the wood material planed.
  • the opening 18 will he larger, i. e. corresponding to the .coarser shavings. ln earlier arrangements where the knife and the break iron attached thereto are displaced in their own plane, the opening ⁇ will again be larger for thinshavi' gs and smaller for coarse shavings, which obviously an incorrect state of things.
  • the knife holder 5 is rotatable, as already pointed out hereinbefore, the axis of rotation extending in parallel to the cutting edO'e of the knife 10.
  • the holder is steadily guided in that 'he cylindrical surface thereof is tightly enclosed by the drawer 1 which, correspondingly, is cylindrically shaped on its inside.
  • the one end of the holder is formed into a pivot 19 mounted in the'one head piece of the drawer.
  • Mounted in the opposite head piece is the screw 9 adapted to be screwed in the holder.
  • This holder is provided with a longitudinal slot 20 having a great pitch, an abutment 21 provided on the inside of the drawer engaging into said slot.- l/Vhen the screw 9 is turned, the knife holder 5 is displaced in its longitudinal direction, the abutment 21 sliding in the slot 20 and exerting a turning action on the holder, so that the cutting edge of theknife 10 is raised or lowered relativelyto the working plane of the drawer.'
  • each knife drawer issituated obliqnelyV with ref spect to the feeding direction ofV the wood material., that is to say, in such a manner that the edges of the knife drawer and the corre ⁇ spending edges of the pocket, into which the drawer is inserted, forman oblique angle with the feeding direction.
  • the advantageous eondition is obtained, that the force which durwork acts upon the drawerl in the said direction will be divided in such a manner 1 that one of its l,components will powerfully counteract displacement ofthe dra-wer out of the pocket.
  • the obliquel position is suitably adapted, the said force will therefore, in connection with the friction between the CII different positions ⁇ that the boards may as@ suine during the feeding thereof.
  • the knife drawer is inserted in its pocket, it is displaeeable in the longitudinal direction of the cutting edge of the knife.
  • This arrangement entails the Very important advantage that the drawer may be displaced, without altering the distance between the cutting edge and the pressure rollerssl shown in Fig. 4l.
  • cooperation between the rollers and the Adrawer is maintained quite independently of the positions of displace nient occupied by the drawer. Consequently, if only a portion of the length of the cutting edge ofthe knife is utilized on a certain oc casion for the planing operation .and is thus worn', another portion of the edge, which is not worn, may come to use on some other occasion, simply by the. .drawer being displaced so that the unworn portion ofthe edge is brought into working position.
  • a frame having a plane upper surface provided with an opening therein, guides on the underside ofthe n fi'an'ie below said opening, ardrawer supported on said guides below said opening having v its upper surface in the plane of said frame surface, aY knife holder supported by said drawer, a guide onl said drawer engaging said knife holder and extending obliquely ⁇ to the cutting edge of said knifeand tothe upper surface of said drawer, and means secured to said drawer and engaging said knife holder vto move the knife holder On said guide, .whereby the knife is moved upwardly -and forwardly through the opening in the frame member.
  • the knife adjusting means comprises a screw mounted in an end of the drawer and whicliengages an end of the knife holder to move the knife holder transversely of the drawer.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacture Of Wood Veneers (AREA)
US200210A 1927-03-23 1927-06-20 Fixed-knife drawer for planing machines Expired - Lifetime US1703007A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1703007X 1927-03-23

Publications (1)

Publication Number Publication Date
US1703007A true US1703007A (en) 1929-02-19

Family

ID=20423333

Family Applications (1)

Application Number Title Priority Date Filing Date
US200210A Expired - Lifetime US1703007A (en) 1927-03-23 1927-06-20 Fixed-knife drawer for planing machines

Country Status (2)

Country Link
US (1) US1703007A (enrdf_load_stackoverflow)
FR (1) FR636784A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195675A (en) * 1976-04-02 1980-04-01 Hendrik Hupkes Shaving wood

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195675A (en) * 1976-04-02 1980-04-01 Hendrik Hupkes Shaving wood

Also Published As

Publication number Publication date
FR636784A (enrdf_load_stackoverflow) 1928-04-16

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