SE186309C1

SE186309C1 -

Info

Publication number: SE186309C1
Authority: SE
Publication date: 1963-01-01

Description

Uppfinnare: H Persson Foreliggande u.ppfinning hanfor sig till forbattringar vid en fastspanningsanordning av skruvstyckstyp for fastspanning av arbetsstycken sarskilt i verktygsmaskiner. Jet nya i uppfinningen hanfOr sig till ett skruvstycke av den typ, som visas i den amerikanska patentskriften 2 552 580. Forbittringarna besta i en anordning for snabbinstallning av den ena spdnnbacken och en skruvfininstallningsanordning fOr den andra backen. Inventor: H Persson The present invention relates to improvements in a screw-type type clamping device for clamping workpieces, especially in machine tools. The novelty of the invention relates to a vice of the type shown in U.S. Pat. No. 2,552,580. The resilience consists in a device for quick installation of one spindle jaw and a screw fine mounting device for the other jaw.

Ett andamal med uppfinningen är att astadkomma en sadan snabbinstallning for den ena av spannbackarna utan att backen behover skjutas in for frigdring. Uppfinningen anger icke blott medel for snabbinstAllning av spannbackarna till arbetsstyckets storlek utan den speciella typ av fly sparranordning, som anvandes, talker dessutom den snabbrorliga spannbacken att ions bort fran arbetsstycket, sa snart som trycket pa arbetsstycket upphor genom fininstallningsbackens rorelse, dvs. spArranordningen liar icke nagon bakatfiddring eller clodgang och den rorliga backen be-hover icke Rims i riktning framat for att frigoras for rorelse bakat. An object of the invention is to provide such a quick installation for one of the bucket jaws without the jaw having to be pushed in for release. The invention not only provides means for quick adjustment of the clamping jaws to the size of the workpiece, but the special type of fly saving device used also talks the quick-release clamping jaw to be removed from the workpiece as soon as the pressure on the workpiece ceases due to fine installation jaw movement. the locking device does not allow any rearward feeding or clodgang and the movable hill does not need Rims in the forward direction to be released for moving backwards.

Ett ytterligare andamal med uppfinningen ãr att astadkomma ett forbdttrat fastspanningsorgan f5r fastspanning av skruvstycket vid bordet i en pelarborrmaskin. Detta fastspdnningsorgan liar fOrbattrats• sã, att det ger en effektivare och starkare lasverkan mot arbetsbordets yta. A further object of the invention is to provide an improved clamping means for clamping the vice at the table in a column drilling machine. This clamping member can be improved so that it gives a more efficient and stronger welding effect to the surface of the work table.

Uppfinningen shall nu narmare beskrivas med hanvisning till en pa bifogade ritning vi-sad utforingsform. Fig. 1 visar en planvy av skruvstycket. Fig. 2 visar en sidovy av skruvstycket I arbetslage med den ett nedatriktat tryck pa skruvstyckets backande astadkommande lutningen i klamman C inritad nagot Overdriven. Fig. 3 visar en sektion genom spannbackarna tagen ldngs linjen 3-3 i fig. The invention will now be described in more detail with reference to an embodiment shown in the accompanying drawing. Fig. 1 shows a plan view of the vice. Fig. 2 shows a side view of the vice in the working position with a downward pressure on the backward inclining of the vice in the clamp C drawn slightly overdriven. Fig. 3 shows a section through the jaws taken along line 3-3 in fig.

Dupl. kl. 87 a: 1/02 2 for askadliggorande av konstruktionen av snabbinstallningsbacken och fininstallningsbacken. Fig. 4 är en sektion 'dugs linjen 4 4 i fig. 3. Fig. 5 visar en sektion langs linjen 5-5 1 fig. 3 och fig. B slutligen en partiell vy av kilsparet och tandsthngen sedd fran linjen 6-6 i fig. 1 i Tiktning av pilarna. Dupl. at 87 a: 1/02 2 for ash damage to the construction of the quick-installation jaw and the fine-installation jaw. Fig. 4 is a sectional view of line 4 4 of Fig. 3. Fig. 5 shows a section along line 5-5 of Fig. 3 and Fig. B finally a partial view of the wedge pair and rack seen from line 6-6 of Fig. 3. Fig. 1 in Sealing of the arrows.

Med. 2 betecknas ett barorgan, som kan utgras av bordet eller badden i en verktygsmaskin, sasom en pelarborrmaskin, en arborrmaskin eller liknande. Klamman C är monterad ph lahrorganet 2 medelst en spdnnbult 4, vilken kan stracka sig genom ett hal i barorganet 2 eller kan vara infOrd i ett T-spar i detta och är forsedd med en stang 6 for manuell vridning av bulten. En bricka 8 och mutter 10 kunna vara anordnade pa den andra Auden av bulten, ehuru i stallet en gdnga kan finnas i halet 3, i vilket bulten 4 skruvas in. With. 2 denotes a bar member which can be dug out of the table or bath in a machine tool, such as a column drilling machine, a drilling machine or the like. The clamp C is mounted on the locking member 2 by means of a clamping bolt 4, which can extend through a hall in the bar member 2 or can be inserted into a T-slot therein and is provided with a rod 6 for manual rotation of the bolt. A washer 8 and nut 10 can be arranged on the other Auden of the bolt, although instead a thread may be present in the tail 3, into which the bolt 4 is screwed.

Undre och owe klamstycken 12 Tesp. 11 dro svangbart monterade pa bulten 4, ,och en spinclel eller slang 16 hr vridbart och f6rskjuthart anordnad naellan dessa klamstycken. SO.- som visas i fig. 2 bilda klamstyckena i verksaint lage ett hal 15, i vilket stangen 16 Or in-ford. Detta hal 15 lutar frail how till vdnster nagot mot barorganet 2, sasom visas i fig. 2. I ett verkligt utfarande liar den vanstra an-den (at spannbackarna till) gjorts 0,005 mm ldgre an den hiligra andel' ph hale. NOr kldmman dras at tvingas harigenom stangen 16 neat, varvid spannbackarna tillsammans pressas ned mot barorganet 2 for erhallande av st8rre stabilitet. Vid en liten kldmma her detta tryck uppskattats anda till 2 ton. Lower and owe clamp pieces 12 Tesp. 11 pull pivotally mounted on the bolt 4,, and a spindle or hose 16 hr rotatably and displaceably arranged near these clamp pieces. SO .- as shown in Fig. 2 form the clamping pieces in the working structure of a hall 15, in which the rod 16 is inserted. This hal 15 slopes frail how to the left slightly towards the bar member 2, as shown in Fig. 2. In a real embodiment the left second (to the bucket jaws to) is made 0.005 mm lower than the holier part 'ph hale. When the clamp is pulled, it is forced through the rod 16 neatly, whereby the clamping jaws are pressed together against the bar member 2 to obtain greater stability. At a small cold here this pressure is estimated to be 2 tons.

Delarna dro sa anordnade, att klamman och sUngen kunna svangas fram och tillbaka, sasom antydes med pilen A (fig. 1), samticligt somIstangen 16 kan forskjutas fram och tillbaka relativt klamman, sasom antydes med 2— — pilen B och vridas, sasom antydes med pilen D. The parts are arranged so that the clamp and the song can be swung back and forth, as indicated by the arrow A (Fig. 1), at the same time as the rod 16 can be displaced back and forth relative to the clamp, as indicated by the arrow B and rotated, as indicated with the arrow D.

Den fininstallbara yttre spannbacken 18 är glidbart lagrad pa stangen 16. anden pa stangen 16 är nedsvarvad, sa att den bildar en gangad tapp 20, sasom. visas i fig. 3. Pa denna tapp ãr anbragt en mutter 24 med en handmanoverspak 26. En lageryta 28 pa denna mutter vilar via en lamplig bricka 30 mot spannbacken 18 och vid vridning ay muttern t-vingas denna spannback mot spannbacken 22. The fine-adjustable outer jaw 18 is slidably mounted on the rod 16. the spirit on the rod 16 is turned down so as to form a threaded pin 20, such as. is shown in Fig. 3. On this pin a nut 24 is arranged with a hand control lever 26. A bearing surface 28 on this nut rests via a suitable washer 30 against the clamping jaw 18 and when turning the nut this clamping jaw is forced against the clamping jaw 22.

Sasom framgar ay fig. 3 och 4, är en pinne 32 anbragt i ett transyersellt hal i backen 18, sa att den ingriper i ett ringformigt spar 34 i mutter. 24. Ay fig. 3 och 5 framgar, att en. pinne 36 är anordnad i ett transversellt hal i backen 18, O. att den ingriper i en langsgaende urtagning 38 i stangen 16. Den.na pinne har den dubbla uppgiften att begransa backens 18 langsrorelse utmed stangen 16 och att forhindra vridning ay backen kring stangen. As shown in Figs. 3 and 4, a pin 32 is placed in a transversely slid in the jaw 18 so as to engage an annular groove 34 in the nut. 24. Figs. 3 and 5 show that a. pin 36 is arranged in a transverse hall in the jaw 18, 0. that it engages in a longitudinal recess 38 in the rod 16. This pin has the dual task of limiting the longitudinal movement of the jaw 18 along the rod 16 and to prevent rotation of the jaw around the rod. .

Den langt rorliga eller inre snabbspanningsbacken 22 ãr forsedd med ett hal 23, medelst -vilket den är fOrskjutbart lagrad pa stangen 16. Stangen 16 ãr forsedd med ett kilspar 40. The highly movable or internal fast-tension jaw 22 is provided with a halter 23, by means of which it is slidably mounted on the rod 16. The rod 16 is provided with a pair of wedges 40.

I botten pa kilsparet är en rad vinklade hack 42 utformade. Sasom framgar av fig. 3, stracker sig en i backen 22 forskjutbart lagrad fja.- derbelastad pinne 44 in i kilspa'ret 40 och tandningen 42. Genom pinnens 44 ingrepp i kilsparet 40 hindras backens yridning kring stangen. 16. At the bottom of the wedge pair, a series of angled notches 42 are formed. As can be seen from Fig. 3, a spring-loaded pin 44 displaceably mounted in the jaw 22 extends into the wedge groove 40 and the toothing 42. The engagement of the pin 44 in the wedge pair 40 prevents the jaw from sliding around the rod. 16.

AV fig. 3 framga'r yidare att pinnen 44 in-griper i hacken 12 pa ett sparrhakartat satt. Den kan for hand frigoras Iran hacken 42 med hjalp air bygeln 46. Genom den mellan ansatsen 43 och stoppskruven 47 inlagda fjadern 45 hindras pinnen fran att gâ ur sparet 40. Det torde ,observeras, att pinnen 44 pa grund ay sin yinkelstallning kan dragas ut, utan att backen 22 behover forskjutas, curs. det finns lake flagon d5dgang I denna spanmekanism. Vidare kan backen 22 for hand forskjutas mot backen 18, enar pinnen 44 kan tvingas ut mot verkan av sin Udder, sa att den glider in i nasta hack 42. Pinnen ger givetvis lake vika for krafter, som soka skil- j a backarna at. Fig. 3 further shows that the pin 44 engages the notch 12 on a ratchet-like set. It can be manually released from the notch 42 with the aid of the stirrup 46. The spring 45 inserted between the shoulder 43 and the stop screw 47 prevents the pin from coming out of the recess 40. It should be noted that the pin 44 can be pulled out due to its angular position. , without the hill 22 having to be displaced, curs. there is lake flagon d5dgang In this span mechanism. Furthermore, the hill 22 can be displaced by hand towards the hill 18, the pin 44 can be forced out against the action of its Udder, so that it slides into the next notch 42. The stick of course gives the lake a yield for forces which seek to separate the slopes.

Vid insidan pa backarna 18 och 22 aro lister 48 utformade for uppbarande av arbetsstycket W. Atminstorte den ena av backarna, exempel-vis 18, a" forsedd med urtagningar 50 och 51 for gripande ay cirkulara arbetsstycken. At the inside of the jaws 18 and 22, strips 48 are formed to support the workpiece W. Atminstorte one of the jaws, for example 18, is provided with recesses 50 and 51 for gripping the circular workpieces.

Vid anyandningen skruvas backen 18 tillbaka pa stangen, sâ langt pinnen 36 tillater. Arbetsstycket W placeras darefter mellan backarna oak backen 22 Mires genom snabbforskjutning fram till approximatiy gripkontakt. Genom vridning av ispaken 26 ett vary eller sa forskjutes sedan backen 18 till stadigt ingrepp med arbetsstycket W. Backarna med daremellan liggande arbetsstycke place ras sedan i onskat lage och kla.mman C drages at genom vridning av stangen 6 ungefar ett vary. Harigenom pressas sidoytorna eller andytan pa backarna hart emot barorganet 2, sá att skruystycket halles i sitt 1-age genom friktion. Den svaga lutningen hos Valet 15 i klamanan C okar i hog grad backarnas friktionsingrepp med barorganet 2. arbetsstycket skall frigoras lossas klamman. C oak backen 18 skruvas bort 'frail arbetsstycket, varefter pinnen 41 kan dragas ut och backen 22 fritt skjutas bort fran arbetsstycket. When breathing, the jaw 18 is screwed back onto the rod as far as the pin 36 allows. The workpiece W is then placed between the jaws and the jaw 22 Mires by rapid displacement up to the approximate grip contact. By turning the ice lever 26 a vary or so, the jaw 18 is then displaced into firm engagement with the workpiece W. The jaws with the intermediate workpiece therebetween are then placed in the desired position and the clamp C is pulled by turning the rod 6 approximately a vary. As a result, the side surfaces or the end surface of the jaws are pressed hard against the bar member 2, so that the screw piece is held in its 1-age by friction. The slight slope of the Valet 15 in the clamp C increases to a large extent the frictional engagement of the jaws with the bar member 2. the workpiece must be released, loosen the clamp. The jaw 18 is unscrewed from the workpiece, after which the pin 41 can be pulled out and the jaw 22 is freely pushed away from the workpiece.

Uppfinningen kan tillampas rid andra specifika skruystycksforxner utan att dess yasentliga kannetecken frangas. Exempelvis kan vilka som heist lampliga kilorgan anvandas for att forhindra vridning av backarna pa stangen eller kan stangen ha annan tvarsektion an cirkular, dar den ,uppbar backarna eller vice versa kunna backarna yara yridbara pa stangen och stangen ovridbar i klamman, enar vridning av backarna begransas av den plana ytan, da klamman C Or i klamlage. The invention can be applied to other specific veneer shapes without compromising its essential features. For example, the most suitable wedge means can be used to prevent rotation of the jaws on the bar or the bar can have a different cross section than circular, where it, supported the jaws or vice versa, the jaws can be rotatable on the bar and the bar non-rotatable in the clamp. of the flat surface, then clamp C Or in clamp layer.

Claims

Patent claim:

A screw piece, especially for holding workpieces in machine tools, containing a bar rod (16) arranged to be slidably supported on a stationary stand (2), such as the table in a machine tool, and to extend through a first jaw (22) and slidably support a second clamping jaw (18), which can be finely installed along the bar rod (16), saint clamping means (12, 14) for clamping on the jaws in relation to the stand (2), can be characterized in that the first clamping jaw (22) the bar rod (16) is also gradually displaceable by displacement in relation to this Wang, each of the stitches (16) and the tapered jaws (18, 22) being installable as a unit to a desired position in relation to the clamping means (12). , 14).

2. A screw piece according to claim 1, which has the bar rod (16) provided with a ratchet notch (42) and the first clamping jaw (22) with one. spring-loaded welding pin (44) arranged to be able to intervene in the said notch, can be drawn daray, that the notch (42) Aro arranged in the bottom ph. , a wedge pair (40) in the bar rod (16), so that the welding pin (44) through sieve engagement in the wedge pair prevents rotation of the first clamping jaw (22) around the bar rod (16).

A screw piece according to claim 2, characterized in that the longitudinal axis Or of the welding pin (44) is arranged at an oblique angle to the longitudinal axis of the bar rod (16) and that the spirit engaging in the ratchet notch on this pin points in the direction of the second jaw (18).

4. A vise according to claim 3, - 3 may be characterized in that the welding pin (44) has a right-angled surface engaging in the ratchet notch and that the ratchet notch (42) in the wedge pair (40) has surfaces which arc arranged to engage directly in front of said surface of the pin and tilt in relation to the resin shaft (16) Mug shaft.

A vice according to any one of the preceding patent claims, characterized in that the bar rod (16) is cylindrical and slidably and rotatably received in an opening (15) formed by the clamping means (12, 14), so that the rod (16) and the darpa arranged the clamping jaws (18, 22) arc rotating installation hara around the longitudinal axis of the brush finger (16). Request publications: U.S. Patent Nos. 711,948, 1,411,578, 2,552,580.