SE177903C1

SE177903C1 -

Info

Publication number: SE177903C1
Authority: SE
Publication date: 1961-01-01

Description

Uppfinnare: T M S Liljeqvist Foreliggande uppfinning hanfor sig till en medbringaranordning for fasthallning och kringvridning .av fanerkubben i fanersvarvar. Medbringarna enligt kanda utforingsformer aro forsedda med spetsar, upphojningar eller dyl. klor, som pressas in i svarvkubbens ande vid dennes fastgoring i svarven. For svarvning av mycket liinga eller stora kubbar har man hittills anvant medbringare, vars klor statt i ingrepp med fanerkubbens ande utmed cirkellinjer av betydande diameter. Foljden Minx har varit, att man for att svarva den innersta delen resp. karnan av fanerkubben varit tvungen anvanda skilda smalare medbringare. Inventor: T M S Liljeqvist The present invention relates to a carrier device for holding and rotating the veneer block in veneer lathes. The carriers according to known embodiments are provided with tips, elevations or the like. chlorine, which is pressed into the spirit of the lathe block when it is attached to the lathe. For turning very small or large blocks, carriers have hitherto been used, the claws of which have been in engagement with the spirit of the veneer block along circular lines of considerable diameter. The consequence Minx has been, that to turn the innermost part resp. the core of the veneer block had to use different narrower carriers.

Del har Oven foreslagits for svarvning av svarvkubbar med star diameter att anvanda dubbla medbringarklor, anordnade innanfor varandra relativt fanerkubbens axel, varvid klorna anordnats att successivt dragas ur ingrepp med svarvkubbens ande alit eftersom nedsvarvningen fortskiider, dvs. sä, att de yttre klorna forst avlagsnas fran ingreppet med kubbanden. Detta svarvningssatt forutsalter emellertid en tamligen invecklad svaryoch medbringarkonstruktion. Dessutom kunna storningar Mit uppsta ,ona de dubbla medhringarklornas relativt varandra rorliga delar icke aro ratt smorda. It has also been proposed for the turning of turning diameters of rigid diameter to use double carrier claws, arranged within each other relative to the axis of the veneer block, the claws being arranged to be gradually pulled out of engagement with the spirit of the turning block as the turning continues, ie. so that the outer claws are first removed from the engagement with the cube bands. This turning method, however, presupposes a rather complicated answering machine and carrier construction. In addition, disturbances can occur when the relatively movable parts of the double co-ring claws are not properly lubricated.

Foreliggande uppfinning hanfor sig till en medbringare, som undanrojer de ovanniimnda nackdelarna. Den medger stadse ett effektivt grepp i svarvkubbens lade, är enkel till konstruktionen och Or kombinerbar med element, som maskinellt loser medbringaren fran ingreppet med svarvkubben. The present invention relates to a carrier which obviates the above-mentioned disadvantages. It still allows an effective grip in the turning of the turning block, is simple in construction and can be combined with elements which mechanically release the carrier from the engagement with the turning block.

Medbringaren kannetecknas i sin allmannaste form darav, att den hestar av en enkel hylsformig stomme, utmed vars yttre eller inre yta är anordnat axiellt forlopande klor i form av asar eller ribbor samt att den är kombinerad med ett i hylsan axiellt rorligt ufskjutarelement, som 5.r avsett for losgOring 'av medbringaren fran svarvkubben, men icke deltager i svarvkubbens fasthallning eller kringvridning. The carrier can be characterized in its most general form by the fact that it is made of a simple sleeve-shaped body, along the outer or inner surface of which is arranged axially extending claws in the form of axes or ribs and that it is combined with a movable pushing element in the sleeve, as 5. is intended for detachment of the carrier from the turning block, but does not participate in the holding or turning of the turning block.

Enligt en sarskild utforingsform ar medbringareris hylsformiga stommes ande vas-sad att bilda en skarp kant. Enligt ett annat kannetecken fOr uppfinningen ar halet i rnedbringarens hylsstomme format sa, att del bildar en konisk fortrangning Iran hylsanden mat. According to a particular embodiment, the sleeve-shaped body of the carrier frame is sharpened to form a sharp edge. According to another feature of the invention, the tail in the sleeve body of the reducer is shaped so that part forms a conical displacement in the sleeve of the food.

Som ytferligare ett kannetecken for medbringaren ma anforas, .att de pa insidan av medbringarhylsan anordnade axiellt forlopande klorna Oro sa. utformade, att deras radiellt sett innersta kant Or parallell med hylsans geometriska mittaxel, varvid, da hylsvaggen till foljd av hylshalets koniska utformning i hylsanden minskar i tjocklek i Overensstammelse med sagda konicitet, avstandet mellan klornas innerkant och hylsinnervaggen okar mot hylsanden. As a further sign a marker for the carrier must be stated, that the axially extending claws arranged on the inside of the carrier sleeve Oro so. designed, that their radially innermost edge Or parallel to the geometric center axis of the sleeve, whereby, as the sleeve cradle due to the conical shape of the sleeve neck in the sleeve sand decreases in thickness in accordance with said conicity, the distance between the inner edge of the claws and the sleeve inner rock increases.

Gen,om att anordna medbringarklorna som axiellt forlopande, asliknande upphojningar utmed hylsstommens yttre och/eller inre ytor astadkommes, da medbringaren tryckes in i fanerkubbens ande, ett synnerligen effektivt grepp i densamma. En foljd harav är, att fastan medbringaren utformas med relativt liten diameter, ken man kringvrida svarvkubben, Oven am dennes diameter Or stor. Nedsvarvningen av kubben_ kan Oven utforas anda till liten karndimension med samma medbringare tack vare dennes ringa diameter. Gene, of arranging the carrier claws as axially extending, axle-like elevations along the outer and / or inner surfaces of the sleeve body, when the carrier is pressed into the spirit of the veneer cube, a particularly effective grip therein is provided. A consequence of this is that the fastener carrier is formed with a relatively small diameter, which can be turned around the turning block. The lowering of the block_ can Oven be performed spirit to small vessel dimension with the same carrier thanks to its small diameter.

Viii den utforingsform av uppfinningen dar medbringarhylsans inre borrning gores del- irisavsmalnande fran anden Mat, var- vid de inre klorna Oro formade p0 motsvarigt satt med avtagande hojd, minskas risken for sprickbildning i svarvkubben, da medbringaren presses in i kubbanden. Talrika fors& ha bekraftat, att man med en medbringare enligt uppfinningen i en arbetsgang och utan rnedbringarbyte kunnat nedsvarva svarvkubben till sa sraa diameterdimensioner, att ytterligare nedsvarvning av svarvkubben Or ,onodig. Det Or klart, att man vid nedsvarvning av sarskilt langa svarvkubbar ken tvingas anvanda tryckvalsar eller dyl. for att stoda svarvkubben och hindra den att btija 2— — sig undan det skarande verktyget under svarvningens slutskede. In the embodiment of the invention where the inner bore of the carrier sleeve is made partially iris tapered from the other Mat, whereby the inner claws Oro formed at a corresponding set with decreasing height, the risk of cracking in the turning block is reduced when the carrier is pressed into the cube belts. Numerous experiments have confirmed that with a carrier according to the invention it has been possible in one operation and without a reduction of the reducer to turn the turning block to such a large diameter dimensions that further turning of the turning block Or, is unnecessary. It is clear that when turning down particularly long turning blocks, one is forced to use pressure rollers or the like. to stop the turning block and prevent it from bending away from the cutting tool during the final stage of the turning.

Bifogade ritning antyder schematiskt ett utforingsexempel pa en konstruktion av en medbringare enligt uppfinningen. The accompanying drawing schematically indicates an exemplary embodiment of a construction of a carrier according to the invention.

Fig. 1 visar medbringaren sedd Iran anden, fig. 2 visar ett axiellt snitt av densamma och fig. 3 visar en sidovy av medbringaren. Fig. 1 shows the carrier seen Iran spirit, Fig. 2 shows an axial section of the same and Fig. 3 shows a side view of the carrier.

Medbringarens hylsformiga stomme är betecknad 1, dess yttre axiellt riktade medbringarklor 2, dess inre axiellt riktade medbringarklor 3 och det inuti medbringarhylsan i axiell led rorliga utskjutarelementet 4. The sleeve-shaped body of the carrier is designated 1, its outer axially directed carrier claw 2, its inner axially directed carrier claw 3 and the axially movable ejector element 4 inside the carrier sleeve.

Som av ritningen framgar är medbringarens hylsformiga stomme 1 vid sin yttre ande sh formad, att dess vagg vid 5 tilltar i tjocklek frau anden mat, m. a. o. sa, att borrningen i hylsan liar avsmalnar koniskt frau anden mat. En foljd hthuv ar, att de inre axiella medbringarkloma 3 i forhallande till medbringarhylsstommen aro hogre vid anden an. langre lane. As can be seen from the drawing, the sleeve-shaped body 1 of the carrier is shaped at its outer spirit sh, that its cradle at 5 increases in thickness from the spirit food, i.e. that the bore in the sleeve tapers conically from the spirit food. A consequence is that the inner axial carrier claws 3 in relation to the carrier sleeve body are higher than the other. langre lane.

En pa detta salt vad vaggtjockleken betraffar mot andk.anterna spetsig hylsstomme tranger 'at in i anden pa en svarvkubb, sa att risken for att den sistnamnda harvid skall spricka undvikes. De langstrackta asliknande kloupphojningarna 2, 3 itstadkomma ett synmerligen effektivt grepp i svarvkubbmaterialet och sakerstaller en effektiv kringvridning av kubben, aven ,om dennes dimensioner aro stora. A andra sidan kan medbringaren spiv utformas med sa Men diameter, att man med densamma kan svarva aven ytterst klena svarvkabbskarnor. Utskjutarelementet 4 a" lampligen sa avpassat och anordnat, att an-den av detsamma, da medbringaren pressas in i svarvkuhhen, kommer att anligga mot eller intill svarvkubbsanden. Dd man onskar losgora medbringaren Iran svarvkubben pressas utskjutaren 4 mot svarvkubbsanden, alltsd enligt fig. 2 och 3 at hoger relatikvt hylsan 1, varvid hylsan 1 kommer att pressas ut ur och losgoras frail svarvkubben. On this salt, as far as the rock thickness is concerned, the pointed sleeve body penetrates into the duct on a turning block, so that the risk of the latter cracking is avoided. The elongate shaft-like claw elevations 2, 3 provide a particularly effective grip in the turning block material and ensure an efficient rotation of the block, even if its dimensions are large. On the other hand, the carrier spike can be designed with such a diameter that it can be used to turn even extremely small turning cable cores. The ejector element 4 a "is suitably so adapted and arranged that the second of the same, when the carrier is pressed into the lathe cow, will abut against or next to the lathe block sand. and 3 that is relatively higher than the sleeve 1, wherein the sleeve 1 will be pressed out and released from the lathe.

Naturligtvis kunna smarre dimensionella avensom andra formforandringar vidtagas med hansyn till medbringarens konstruktion ntan att ramen for upplinningen overskrides. Man kan i en fanersvarv, beroende pA dintensionerna hos den for svarvning avsedda kuhben, anvanda antingen en medbringare vid kubbens .ena dude eller ocksa tva medbringare, dvs. en. for kubbens vardera ande. Man kan aven ,an-vanda de axeillt stallda klorna alternativt antingen pa hylsstommens yttre eller inre sida. Of course, smaller dimensional as well as other shape changes can be made with regard to the construction of the carrier without the frame of the winding being exceeded. In a veneer lathe, depending on the dimensions of the cube intended for turning, one can use either a carrier for the cube's one dude or also two carriers, ie. one. for each spirit of the log. It is also possible to use the axially set claws or alternatively either on the outer or inner side of the sleeve body.

Claims

Patent claim:

Carrier for veneer lathes, characterized in that it consists of a simple sleeve-shaped body, along the outer and / or inner surface of the tar are arranged axially extending claws in the form of axes or ribs and that it is combined with an axially movable ejector element in the sleeve. , which is intended for the release of the carrier Iran the turning block, but joke participates in the turning or twisting of the turning block.

Carrier according to claim 1, characterized in that the sleeve-shaped body of the carrier is sharpened to form a sharp edge.

Carrier according to patent claims 1 and 2, characterized in that the tail in the carrier body of the carrier is shaped to taper conically inwards from the sleeve sand.

Carrier according to claim 3, characterized in that the inner edge of the axially extending claw of the carrier on the inside of the sleeve extends parallel to the geometric center axis of the carrier, wherein, in accordance with the conical extension of the sleeve neck towards the sleeve sand resp. the decrease in the thickness of the sleeve cradle, the distance between the inner edge of the claws and the sleeve inner cradle will increase towards the sleeve sand. Cited publications: Patents frcin U. S. A. 66490

5.