CS215423B1

CS215423B1 - Quick-clamper of the tool

Info

Publication number: CS215423B1
Application number: CS910679A
Authority: CS
Inventors: Milan Dobrota
Original assignee: Milan Dobrota
Priority date: 1979-12-20
Filing date: 1979-12-20
Publication date: 1982-08-27

Description

Predmetom vynálezu je zariadenie na rýchle, jednoduché a spolehlivé upnutie nástroja, vhodné obzvlášť u obrábacích strojov s malými osovými vzdialenosťami vretien.The object of the invention is a device for fast, simple and reliable tool clamping, particularly suitable for machine tools with small spindle axial distances.

Doteraz sa používá viac druhov rýchloupínačov nástrojov, z ktorých vačšina upíná nástroje pomocou guličkového uzamykacieho mechanizmu. Najvyspelejšie druhy týchto mechanizmov majú kuželová alebo špirálovú uzamykaciu plochu, pričom uzamykací mechanizmus je nasunutý alebo naskrutkovaný na vřeteno, takže rozměry vřetena sa rýchloupínačom nástroja příliš zváčšia a preto sú takéto rýchloupínače nepoužitelné u strojov s malými osovými vzdialenosťami vretien. Konštrukčne vychádzajú tieto rýchloupínače nástrojov zložité a technologicky náročné, preto ich výrobná cena je vysoká.Up to now, several kinds of tool quick-release devices have been used, most of which clamp the tools using a ball-lock mechanism. The most advanced types of these mechanisms have a conical or spiral locking surface, the locking mechanism being slid or screwed onto the spindle, so that the spindle dimensions become too large with the tool quick-release and therefore such quick-release devices are unusable on machines with small spindle axial distances. By design, these quick-release tool clamps are complex and technologically demanding, therefore their production cost is high.

Uvedené nedostatky odstraňuje rýchloupínač nástroja navázujúci na čs. AO 186 909, podstatou ktorého je uzamykacia doštička, suvne uložená spolu s vratnou pružinou v pérovej drážke vřetena a rozoberatelne spojená s ovládacou objímkou, opatřená úkosovou uzamykacou plochou pre dotlačenie uzamykacej guličky na kuželová plochu hlavy zádržného mechanizmu, tvořeného hlavou predlžovacej skrutky vložky nástroja, poistenej v nastavenej polohe vonkajšou maticou, pričom medzi čelo hlavy a dno dutiny vřetena je vložená výsuvná opierka s otvorom pre tlačná pružinu a s drážkou pre čap vodiacej skrutky.These shortcomings are eliminated by the quick-release tool connected to the Czechoslovak. AO 186 909, which is based on a locking plate, slidably mounted together with a return spring in a spindle spring groove and detachably connected to a control sleeve, provided with a bevel locking surface to press the locking ball onto the tapered face of the retaining mechanism head, in an adjusted position by an external nut, with a slide-out support with a bore for the compression spring and a groove for the lead screw pin is inserted between the head face and the bottom of the spindle cavity.

Určitou nevýhodou tohto riešenia je to, že vlacová opierka hlavy zádržného mechanizmu vykonává funkciu vysúvača vložky nástroja, preto je jej tvar ako aj tvar poistnej skrutky dost členitý a teda technologicky náročný. Taktiež uloženie poistnej skrutky je pracné.A certain disadvantage of this solution is that the head restraint of the head of the retention mechanism performs the function of a tool insert ejector, therefore its shape as well as the shape of the locking screw is quite rugged and therefore technologically demanding. The locking screw is also laborious.

Tieto nedostatky sú odstránené rýchloupínačom nástroja podía vynálezu, u ktorého podstatou změny rýchloupínača nástroja podía AO 186 909 je to, že medzi čelo hlavy predlžovacej skrutky vložky nástroja a dno dutiny vřetena je vložená neposúvatelná opierka s vonkajším závitom, do ktorého je zasunutý hrot poistnej skrutky a v osadenom otvore válcovej opierky je uložený spolu s pružinou výtlačný piestik vložky nástroja.These drawbacks are overcome by the tool quick-change device of the invention, which is based on the change of the tool quick-change device according to AO 186 909, that a non-movable external threaded support is inserted between the tool head extension screw head and the bottom of the spindle cavity. A pressure insert piston of the tool insert is mounted together with the spring in the bore of the cylindrical support.

Vytvořením a usporiadaním týchto nových elementov rýchloupínača nástroja podlá vynálezu sa dosiahlo to, že neposúvatelná opierka sa mohla výrobně zjednodušit a axiálně fixovat’ poistnou skrutkou jednoduchej konštrukcie, čo prináša výhodu presnejšieho axiálneho ustavenia nástroja, pričom funkciu vysúvača vložky nástroja převzal výtlačný piestik. Technologickým zjednodušením je aj priebežný závit pre poistnú skrutku v telese vřetena.By designing and arranging these new elements of the tool quick-release device according to the invention, it has been achieved that the non-movable support could be simplified and axially fixed by a safety screw of simple construction, which gives the advantage of more precise axial alignment of the tool. Technological simplification is also the continuous thread for the locking screw in the spindle body.

Příklad riešenia rýchloupínača nástroja podlá vynálezu je znázorněný v pozdížnom řeze na pripojenom obrázku.An example of a quick-change tool solution according to the invention is shown in longitudinal section in the attached figure.

Rýchloupínač nástroja podía vynálezu je riešený tak, že v centrálnej dutině 8, vřetena 19 je uložená válcová opierka 3, axiálně istená poistnou skrutkou vo vonkajšom závite 4 opierky 3. V osadenom otvore 2 opierky 3 je uložená pružina 1 s výtlačným piestikom 13. V zúženej časti otvoru opierky 3 je vnútorný závit. O čelo 6 opierky 3 sa opiera hlava 7 zádržného mechanizmu, ktorá je tvořená hlavou predlžovacej skrutky 20 vložky nástroja 21.0 kuželová plochu hlavy 7 je opretá uzamykacia gulička 16, uložená vo valcovom otvore 9, ktorý je smerom k centrálnej dutině 8 vřetena 19 kuželovité zúžený proti vypadnutiu guličky 16 do dutiny 8 vřetena 19. Uzamykacia gulička 16 je z druhej strany dotlačovaná skosenou plochou uzamykacej doštičky 15, ktorá je spolu s vratnou pružinou 11, suvne uložená v pérovej drážke 17 vřetena 19 a skrutkami 14 spojená s ovládacou objímkou 12. Poloha predlžovacej skrutky 20 vložky nástroja 21 je istená maticou 18. Do vložky nástroja 21 je nalisované unášacie pero 10.The tool quick coupler according to the invention is designed such that a cylindrical support 3, axially secured by a locking screw in the external thread 4 of the support 3, is mounted in the central cavity 8, the spindle 19. part of the opening of the armrest 3 is an internal thread. The head 7 of the restraint 3 is supported by the head 7 of the restraint mechanism formed by the head of the extension screw 20 of the tool insert 21.0 the tapered surface of the head 7 is supported by a locking ball 16 mounted in a cylindrical bore 9 the ball 16 is pushed from the other side by the beveled surface of the locking plate 15, which, together with the return spring 11, is slidably mounted in the spring groove 17 of the spindle 19 and the screws 14 connected to the control sleeve 12. the bolts 20 of the tool insert 21 are secured with a nut 18. A driver tongue 10 is pressed into the tool insert 21.

Nástroj narazený do vložky nástroja 21 sa upne rýchloupínačom nástroja podía vynálezu tak, že sa zasunie do centrálnej dutiny 8 vřetena 19 a po uvolnění uzamykacieho mechanizmu posunutím ovládacej objímky 12 vo smere šípky, sa dotlačí proti tlaku pružiny 1 na výtlačný piestik 13 až po doraz hlavy 7 predlžovacej skrutky 20 na čelo valcovej opierky 3. Uvolněním ovládacej objímky 12, sa uzamykacia doštička 15 pósobením tlaku vratnej pružiny 11, posunie proti směru šípky a svojou skosenou plochou dotlačí uzamykaciu guličku 16 na kuželovú plochu hlavy 7 zádržnéhoThe tool impacted by the tool insert 21 is clamped by the tool quick-release device according to the invention by inserting it into the central cavity 8 of the spindle 19 and after releasing the locking mechanism by sliding the control sleeve 12 in the arrow direction. By releasing the control sleeve 12, the locking plate 15, by applying the pressure of the return spring 11, is moved against the direction of the arrow and by its bevelled surface pushes the locking ball 16 onto the tapered surface of the head 7 of the retainer.

Claims

2 of the invention is shown in a sectional view of the connected figure. The quick-release tool according to the invention is designed so that in the central cavity 8, the spindle 19 is supported by a cylindrical support 3 axially secured by a locking screw 5 in the outer thread 4 of the support 3. In the shoulder 2 of the support 3 there is a spring 1 with a displacement nozzle 13. In the tapered part of the opening of the support 3 twisted thread. The head 6 of the restraining mechanism is supported by the head 6 of the restraint 3, which is formed by the head extension screw 20 of the tool insert 21.0 the tapered surface of the head 7 is a locking ball 16 supported in the cylindrical bore 9 which is directed towards the central cavity 8 of the spindle 19 tapered against the dropout of the ball 16 to the spindle cavity 8. The locking ball 16 is pressed from the other side by the tapered surface of the locking plate 15, which, together with the return spring 11, is slidably supported by the spring groove 17 of the spindle 19 and by the screws 14 connected to the actuating sleeve 12. Position of the extension screw The tool insert is inserted into the tool insert 21 with a pressed-in tongue 10. The tool is inserted into the tool insert 21 with the tool clamp according to the invention so as to insert into the central cavity 8 of the spindle 19 and release the locking mechanism of the actuating sleeve 12 in the direction of the arrow. it pushes against the spring pressure y 1 on the dispensing piston 13 through the head 7 of the extension screw 20 on the face 6 of the cylindrical support 3. By releasing the actuating sleeve 12, the locking plate 15 is moved by the pressure spring 11 against the direction of the arrow and its tapered surface presses the locking ball 16 onto the tapered surface of the head 7 restraint object

A tool clamp mounted with a tool insert and a retention mechanism in a spindle central cavity provided with a ball locking mechanism actuator sleeve, a ball mounted in a spindle wall opening, a bevel locking plate slidably supported with a return spring in a spindle spring groove detachably coupled to the actuator sleeve, s. a retaining mechanism formed by a conical head of a tool insert extension bolt, a mechanism. Thereby the locking mechanism is locked and the tool with the insert is clamped. Possible non-pressing of the retention mechanism head 7 to the stop 6 of the counter-pressure spring support 3 by means of a piston 13, a tool pusher of the invention, according to the invention, when the tool is retracted by the cutting resistance, when the axial dome between the head 7 and the headrest 6 is completely defined and then fixed to to release the tool insert 21, the actuator sleeve 12 is displaced immediately in the direction of the arrow, while the compression spring 1 pushes the head 13 through the head 13 in the direction of the arrow. 7 of the retention mechanism of the non-functional area of the locking ball 16. The tool with the insert 21 is pushed out of the spindle 19 and can be freely removed from the spindle cavity 19. [0025] FIG. Setting the tabs 6 of the tabs 3 to the desired level in the multi-spindle heads is accomplished by adjusting the shafts of the cylindrical supports 3. It is advantageous to pre-align the faces 22 of all the spindles 19 by co-grinding into one plane. In the alignment of the backrests 6, the compression springs 1 are not occupied by the removal of the backrests 3 is facilitated by the inner thread in the backrest 3. The tool quick coupler according to the invention can be used in the machine industry and wherever it requires fast, simple and reliable fastening of the machine or other element with its reconditioning, especially for machines and equipment with small | space around the clamped element. BACKGROUND OF THE INVENTION, characterized in that between the face (6) of the head (7) of the extension screw (20) of the tool insert (21) and the bottom of the cavity (8) of the spindle (19) there is an outer thread (4) into which retracted locking screw tip (5).

2. A tool clamp according to claim 1, characterized in that a displacement nozzle (13) of the tool insert (21) is mounted together with the spring (1) in the recessed opening (2) of the roller support (3). 1 drawing