CS250816B1

CS250816B1 - Skíučovadlo

Info

Publication number: CS250816B1
Application number: CS85775A
Authority: CS
Inventors: Imrich Toth
Original assignee: Imrich Toth
Priority date: 1985-02-05
Filing date: 1985-02-05
Publication date: 1987-05-14
Also published as: CS77585A1

Abstract

Riesenie sa týká sklučovadla u ktorého sa. rieši usporiadanie klopného vedenia čelustí. Podstata riešenia spočívá v tom, že do vodiaceho vybrania základného telesa sklučovadla bočné vyčnievajú symetricky k ose čeluste jej klopné výstupky, medzi ktorými je spevňovací výstupok základného telesa sklučovadla, pričom vo vodiacom vybraní je vodiaca klopná plocha a čelná klopná plocha, s ktorými sú v styku prislúchajúca predná klopná plocha a zadná klopná plocha čeluste. Sklučovadlom podlá riešenia sa spevní najviac namáhaný prierez telesa sklučovadla, zjednoduší sa výroba klopného vedenia a umožní sa přenos vyšších upínacích sil.The solution concerns a chuck in which the arrangement of the tilting guide of the jaws is solved. The essence of the solution lies in the fact that the tilting projections of the chuck's basic body protrude laterally into the guide recess symmetrically to the jaw axis, between which is the reinforcing projection of the chuck's basic body, while in the guide recess there is a guiding tilting surface and a front tilting surface, with which the corresponding front tilting surface and the rear tilting surface of the jaw are in contact. The chuck according to the solution strengthens the most stressed cross-section of the chuck's body, simplifies the production of the tilting guide and enables the transmission of higher clamping forces.

Description

250816 2250816 2

Predmetcsn vynálezu je sklučovadlo, kde sa rieši usporiadanie klopného vedenia čelustev telese sklučovadla.The subject of the invention is a chuck where the arrangement of the tilting guide of the chuck body is solved.

Obdobné doteraz známe sklučovadlá máju radiálně vybrania telesa sklučovadla usporiadanétak, že jeho šířka je daná sirkou čelustí a klopné vedenie je obyčajne tvaru T. Pre realizá-ciu požadovaného silového zdvihu je toto vybranie predlžené v plnej šírke čeluste smeromdozadu od tohto klopného vedenia, nakolko si to vyžaduje záběr čeluste s klínovým šmýkad-lom. Tieto riešenia však značné zoslabujú teleso sklučovadla hlbokýrni výrezmi a to v mies-tach najviac zatažených klopnými momentami a odstředivými silami.Similar hitherto known chucks have a radial recess of the chuck body such that its width is given by the width of the jaw and the tilting guide is usually T-shaped. To realize the required power stroke, this recess is extended in full width of the jaw towards the back of this tilting guide, requires a jaw with a wedge slide. However, these solutions greatly weaken the chuck body by deep cuts in the most heavily tilted moments and centrifugal forces.

Vytvorenie velkých vrtaní v týchto skíučovadlách značné skracuje dížku klopného vedeniačeluste na jednej straně a na straně druhej znižuje tuhost samotného sklučovadla, čo nepriaz-nivo vplýva na hysterézu najma pri skíučovadlách s vyvažováním odstředivých sil čelustí.Výroba klopných vedení tvaru T je pracná a nie je umožněná ich regenerácia po strate přes-nosti, například opotřebením. Sú známe riešenia klopného vedenia, ktoré však neriešia spevne-nie telesa sklučovadla, připadne výhodnější záběr klínového šmýkadla s čelustou.The formation of large bores in these chucks greatly shortens the length of the tilting guide on the one hand, and on the other hand reduces the stiffness of the chuck itself, which adversely affects hysteresis in particular for chucks with balancing centrifugal forces of the jaws. their regeneration after loss of precision, for example by wear. Flip-flop solutions are known, but they do not address the strengthening of the chuck body, or the wedge slide with a jaw may be more advantageous.

Uvedené nevýhody sú zmiernené sklučovadlom podlá vynálezu, ktorého podstatou je, že dovodiaceho vybrania základného telesa sklučovadla bočné vyčnievajú symetricky k ose čelustejej klopné výstupky, medzi ktorými je spevňovací výstupok základného telesa sklučovadla,pričom vo vodiacom vybraní je vodiaca klopná plocha a čelná klopná plocha, s ktorými sú v styku prislúchajúca predná klopná plocha a zadná klopná plocha čeluste.The above-mentioned disadvantages are alleviated by the chuck according to the invention, the principle of which is that the inward recess of the base body of the chuck extends symmetrically to the axis of the jaw protrusion, between which is the reinforcement projection of the chuck base body, with the guide recess and the tilting face in the guide recess. which are in contact with the respective front flip-flop and the rear flip-flop surface.

Sklučovadlom podlá vynálezu sa bočným rozšířením čeluste predlži klopné vedenie a pre-tože do vodiaceho vybrania Čeluste zo zadu zasahuje spevňovací výstupok základného telesa,hmotnost čeluste nerastie. Na druhej straně je teleso sklučovadla spevňovacím výstupkomv miestach najvačšieho zataženia spevnené a vytvořené podopretie klinovej T hlavy šmýkadlatelesom sklučovadla, čo prispieva k zvýšeniu upínacích sil sklučovadla.With the chuck according to the invention, the lateral widening of the jaw extends the tilting guide and, since the reinforcing projection of the base body extends into the guide recess of the jaw, the weight of the jaw does not increase. On the other hand, the chuck body is reinforced by the reinforcement projection at the point of highest retraction and the support of the wedge head is formed by the chuck slider, which increases the chucking forces of the chuck.

Usporiadaním klopných ploch do jednej roviny sa priaznivo ovplyvní priečenie čelustevo vedení, pri súčasnom znížení pracnosti, nakolko na čelusti sú len tri funkčné klopné plo-chy a na telese sklučovadla klopné plochy sú vyrobitelné naraz čelným brúsením.By arranging the tilting surfaces in one plane, the cross-section of the jaws of the guide is favorably influenced, while at the same time the effort is reduced, as there are only three functional tilting surfaces on the jaw and the tilting surfaces can be produced simultaneously by the front grinding on the chuck body.

Na pripojenom výkrese je znázorněný příklad sklučovadla podlá vynálezu, kde na obr. 1je pohlad na část telesa sklučovadla zo strany obvodu v mieste klopného vedenia, na obr. 2priečny tvar čeluste, na obr, 3 čiastočný rez sklučovadlom rovinou kolmou na jeho os a naobr. 4 příklad zabudovania vyvažovacieho mechanizmu čeluste a na obr. 5 rez telesom sklučo-vadla z obr. 1 rovinou I-I s vbudovaným klínovým šmýkadlom a čelustou. V základnom telese 120 sklučovadla 100 je vytvořené radiálně vodiace vybranie 124 preČelust 200 tak, že medzi jej klopnými výstupkami 220 je vytvořené rozširujúce vybranie 223do ktorého zasahuje spevňovací výstupok 123 základného telesa 120 smerom k čelu 130 sklučo-vadla 100 tak, že jeho čelná plocha 122" je v jednej rovině s vodiacou klopnou plochou 122.Spevňovací výstupok 123 v smere šířky čeluste 200 vzdaluje od seba jej klopné výstupky 220,čím sa na jednej straně zváčší dlžka klopného vedenia z čelného pohladu na sklučovadlo100 a na straně druhej zvSčší klopný prierez ”d” základného telesa 120 v miestach pósobe-nia najvačších sil a momentov sil.In the accompanying drawing, an example of a chuck according to the invention is shown, wherein in Fig. 1 the part of the chuck body is viewed from the circumferential side of the tilting guide, in Fig. 2 the cross-section of the jaw, in Fig. 3 is a partial cross-section of the chuck plane perpendicular to its axis and FIG. 4 shows an example of the installation of the balancing mechanism of the jaw and FIG. 5 shows a section through the chuck body of FIG. In the base body 120 of the chuck 100, a radially guiding recess 124 is formed for the relief 200 such that an extension recess 223 is formed between its tilting projections 220 to which the reinforcement projection 123 of the base body 120 extends towards the face 130 of the chute 100 such that its front surface 122 "is flush with the flip-flop surface 122. The flip-up protrusion 123 in the direction of the width of the gripper 200 spans its flip-flops 220, thereby increasing the length of the flip-flop from the front view of the chuck 100 on one side and the larger flip-flop on the other side" d ”Of the base body 120 at the locations of the most powerful forces and torques.

Na konci čeluste 200 bližšej k středu sklučovadla 100 ako je to vidiet na obr. 3 súvytvořené na nej klinové výstupky 224 tak, že směrujú k sebe a sú v zábere s T-hlavou 420známého klínového Šmýkadla 400. Vzhladom k tomu, že bočná vzdialenost 3^ klínových výstupkov224 Čeluste 200 je menŠia ako šířka 3^ spevňovacieho výstupku 123 základného telesa 120respektive T-hlavy 420 klínového šmýkadla 400, je T-hlava 420 klínového šmýkadla 400 svojimvonkajším povrchom 11 a", například válcovým, podopreté pri silovom upínaní vnútorným prilahlýmpovrchem b spevňovacieho výstupku 123 základného telesa 120 v celej šírke 3^, ako je to zná-zorněné na obr, l šípkami.At the end of the jaw 200 closer to the center of the chuck 100 as shown in FIG. 3, wedge-shaped projections 224 are formed thereon, facing each other and engaged with the T-head of the known wedge slide 400. Since the lateral spacing 3 The wedge-shaped protrusions 123 of the wedge-shaped slide 400 are smaller than the width 3 of the strengthening projection 123 of the base body 120 of the wedge-shaped slide 400's T-head 400 by its outermost surface 11a ", for example, cylindrical, supported by force-tightening the inner adjacent surface b of the strengthening wedge. the projection 123 of the base body 120 at full width 3 as shown in Fig. 1 by arrows.

Claims

This makes it possible to reduce the dangerous cross-section h of the T-head 420 of the slide 400 and to increase the drawing of the cross-sectional projections 224 of the jaw 200 and hence the unchanged other design dimensions of the chuck 100, usually the drilling and outer diameter of the base body 120, of the transmitting radial force. transforming into clamping forces on the workpiece. The engagement of the wedge slide 400 with the jaw 200 is shown in more detail in FIG. 5, which is a partial cross-sectional view of FIG. 1 with the wedge slide 400 and the wedge slide 400 in the chuck body 120. The wedge slide 400 in this example is in the shape of a known roller rod located between Because the wedge-shaped protrusions 224 of the jaw protrusions 220 are facing each other, i.e., the known radial axis of the jaw 200, they can extend into the known wedge T-head 420 of the slide 400. However, conditions are provided for supporting the outer surface " the head of the wedge slide 400 by the inner adjacent surface "b" of the reinforcement protrusion 123 in which the wedge slide 400 is disposed axially slidable, dividing the base body 120 into the rear portion 125 and the front portion 126 by a plane passing through its guide surfaces 122 'and its front surface 122' strengthening stiffness At the same time, the front portion 126 can be made of superior materials and the guide surfaces 122 surface hardened and the rear portion 125 made, for example, aluminum, optionally cast iron. In these cases, it will also be advantageous to provide the front tilting surface 122 " of the reinforcing protrusion 123 " on the low intermediate layer 123 " with higher quality materials which are attached to the reinforcing protrusion by any of the known methods. The positioning of the known centrifugal force balancing mechanism 500 by the jaws 200, for example with the two-arm lever 502 and the weight 501, in the points of the reinforcing projection 123 of the base body 120 on one side, the substantial uneven width of the base body 120 itself and on the other hand the jaw 200 will cause a balancing force. F between the clamping force and the front flip-flop 222 and no flip-flop 222 "of the gripper 200 and thereby the jaw 200 will lean over to the workpiece.

1. Chuck, consisting of a base body with tilting recesses for chucks engaged with their movement mechanism, e.g. a wedge slide, equipped with a balancing mechanism of centrifugal forces of the jaw consisting, for example, of a two-arm lever that is one end in engagement with the weight and the other with the jaw characterized in that, in the guide recess (124) of the base body (120) of the chuck (100), laterally protruding protrusions (220), between which the reinforcing projection (123) of the base body (120) of the chuck is protruding, extend symmetrically to the axis of the jaw (200) (100), wherein in the guide recess (124) there is a guiding surface (122) and a frontal tilting surface (122 ") with which the adjacent front tilting surface (222) and the rear tilting surface (222" / jaw / 200 / .

2. Chuck according to claim 1, characterized in that the front flip surface (222) and the rear flip surface (222 ') of the jaw (200) are substantially flush (f / ·).

3. Chuck according to claim 1, characterized in that at least the base body (120) is divided in the plane (s) into the rear part (125) and the front part (126).

4. Chuck according to claims 1 to 3, characterized in that the jaw (200) is in engagement with the center of the chuck (100) in engagement with its wedge-shaped projections (224), with the T-head (420) of the wedge slide (400) / slidingly guided in the base body (120) of the chuck (100), wherein the outer surface (α) of the T-head (420) of the wedge slide (400) is in contact with the inner adjacent surface (b) of the transfer tab (123) of the base body (120) / 250816 4 the lateral distance. There is less than the width of the reinforcement projection (123) of the base body (120) between the wedge protrusions (224) of the jaw (200).

5. Chuck according to Claims 1 to 4, characterized in that at the point of the reinforcing projection (123) of the base body (120) of the chuck (100) the double-arm lever (502) of the balancing mechanism (500) crosses the rear tilting surface (222 ') of the jaw (200).

A chuck according to any one of claims 1 to 5, characterized in that the front tilt surface (122 ') is formed on an intermediate sleeve (123') connected to the stiffening projection (123) of the base body (120). 1 drawing