CS266294B1

CS266294B1 - Clamping device for rotating workpieces

Info

Publication number: CS266294B1
Application number: CS883830A
Authority: CS
Inventors: Vojtech Ing Jakab; Zoltan Ing Zsigo; Dusan Ing Kollarik
Original assignee: Jakab Vojtech; Zsigo Zoltan; Kollarik Dusan
Priority date: 1988-06-03
Filing date: 1988-06-03
Publication date: 1989-12-13
Also published as: CS383088A1

Abstract

Riešenie sa týká upínacieho zariadenia rotujúcich obrobkov a je zamerané na vytvorenie premazávacieho zariadenia klzných plóch prvkov kinematického mechanizmu. Jeho podstatou je, že aspoň v jednom prvku kinematického mechanizmu upínacieho zariadenia je usporiadané·premazávacie zariadenie tvořené akumulátorom maziva a aspoň jedným aktívnym členom, ktorý má aspoň jeden stupeň volnosti pohybu, pričom akumulátor maziva je přepojený rozvodnými kanálmi s klznými plochami prvkov kinematického mechanizmu a plniacim kanálom s mazničkou. Předmětným riešením je vylepšené premazávanie všetkých klzných ploch, je možné predížit intervaly doplňovania maziva, zrovnomerňuje sa vysoká účinnost upínacieho zariadenia v intervale medzi dvomi plneniami maziva a s výhodou je možné ho aplikovat v prevádzkach s automatickým doplňováním maziva.The solution relates to a clamping device for rotating workpieces and is aimed at creating a lubrication device for the sliding surfaces of the elements of a kinematic mechanism. Its essence is that at least in one element of the kinematic mechanism of the clamping device, a lubrication device is arranged consisting of a lubricant accumulator and at least one active member having at least one degree of freedom of movement, while the lubricant accumulator is interconnected by distribution channels with the sliding surfaces of the elements of the kinematic mechanism and a filling channel with a lubricator. The subject solution is improved lubrication of all sliding surfaces, it is possible to extend the intervals of lubricant replenishment, the high efficiency of the clamping device is evened out in the interval between two lubricant refills and it is advantageously possible to apply it in operations with automatic lubricant replenishment.

Description

Vynález sa týká upínacieho zariadenia rotujúcich obrobkov, u ktorého sa rieŠi premazávanie funkčných klzných ploch prvkov jeho kinematického mechanizmu.The invention relates to a clamping device for rotating workpieces, in which the lubrication of the functional sliding surfaces of the elements of its kinematic mechanism is solved.

V súčasnosti sa u upínačov rotujúcich obrobkov mazanie klzných plóch vykonává v Statickom stave upínacieho zariadenia. Používajú sa rózne druhy mazničiek, ktoré sú rozvodnými kanálmi přepojené priamo s klznými plochami niektorých prvkov kinematického mechanizmu. VžíčŠinou ::u tna z huč vímIÍ.hm· plochy základných čotunfí u nkTuČovadiol, vedeni a šmýkadiel, čapy ovládacích pák a pod. Premazávanie upínacieho zariadenia vykonává obsluha ručně mazacím Jlsom v určitých intervalech. Tlak vyvodený mazacím lisom nie je dostatočne velký k tomu, aby mazivo spolahlivo preniklo spletou rozvodných kanálov do každej klznej plochy. Navýše tento spósob mazania nezaručuje dlhodobú vysokú účinnost upínacieho zariadenia a preto je nutné mazat upínacie zariadenie v poměrně krátkých časových intervalech a uskutečnit pravidelné demontáž upínacieho zariadenia zo stroja a demontáž i samotného upínacieho zariadenia a dókladné prečistenie a premazanie všetkých klzných plóch prvkov kinematického mechanizmu.At present, in the case of rotating workpiece clamps, the lubrication of the sliding surfaces is carried out in the static state of the clamping device. Various types of lubricators are used, which are connected directly to the sliding surfaces of some elements of the kinematic mechanism by distribution channels. Usually: u tna z huč vímIÍ.hm · areas of basic chunks for nkTuČovadiol, guides and sliders, pins of control levers, etc. Lubrication of the clamping device is performed manually by the operator with lubrication jls at certain intervals. The pressure exerted by the lubrication press is not large enough for the lubricant to reliably penetrate the tangle of distribution channels into each sliding surface. In addition, this method of lubrication does not guarantee long-term high efficiency of the clamping device and therefore it is necessary to lubricate the clamping device in relatively short time intervals and perform regular disassembly of the clamping device from the machine and disassembly of the clamping device itself and thorough cleaning and lubrication of all sliding surfaces.

Ďalej je známe riešenie automatického premazávania funkčných plóch sklučovadla podlá CS AO č. 264 845, kde akumulátor maziva je vytvořený v základnom telese formou radiálneho otvoru a z obvodu telesa uzatvoreného zátkou s mazničkou, pričom mazivo je vytláčané len odstředivou silou piestika usporiadaného v akumulátore posuvné. Pri tomto riešení sa uskutoč- . ňuje premazávanie sklučovadla len za jeho rotácie a je účinné len pri dosiahnutí určitých otáčok a to znamená, že nie je zabezpečené dostatočné premazávanie funkčných plóch sklučovadla před jeho roztočením.Furthermore, a solution of automatic lubrication of the functional surfaces of the chuck according to CS AO no. 264,845, where the lubricant accumulator is formed in the base body in the form of a radial hole and from the circumference of the body closed by a plug with a lubricator, the lubricant being extruded only by the centrifugal force of a piston arranged slidably in the accumulator. In this solution, the. lubrication of the chuck only during its rotation and is effective only when a certain speed is reached, which means that sufficient lubrication of the functional surfaces of the chuck before its rotation is not ensured.

Uvedené nevýhody zmierftuje upínacie zariadenie rotujúcich obrobkov podlá vynálezu, ktorého podstatou je, že aspoň v jednom prvku kinematického mechanizmu upínacieho zariadenia je usporiadané premazávacie členom, ktorý má aspoň jeden zariadenie tvořené akumulátorem maziva a aspoň jedným aktívnym // stupeň volnosti pohybu, pričom akumulátor maziva je přepojený rozvodnými kanálmi s klznými plochami prvkov kinematického mechanizmu a plniacim kanálom s mazničkou.Said disadvantages are alleviated by the clamping device of rotating workpieces according to the invention, the essence of which is that a lubricating member is arranged in at least one element of the kinematic mechanism of the clamping device, which has at least one device consisting of a lubricant accumulator and at least one active // degree of freedom of movement; connected by distribution channels with sliding surfaces of the elements of the kinematic mechanism and a filling channel with a lubricator.

Riešením upínacieho zariadenia rotujúcich obrobkov podlá vynálezu je vylepšené premazávanie všetkých klzných plóch. Rovnoměrné rozdelenie maziva na jednotlivých klzných plochách zabezpečuje kinematický mechanizmus upínacieho zariadenia svojím zdvihom, pričom sa dosahuji! podstatné vyššie tlaky v rozvode maziva, ktoré spolahlivo doprav ia mazivo ha všetky klzné plochy. Ďalšou výhodou je pri použití akumulátora maziva možnost postupného premazávania klzných plóch po dávkách, čím je umožněné predlžiť časové intervaly doplňovania maziva a zároveň i priebeh účinnosti upínacieho zariadenia v intervale medzi dvomi plneniami je rovnoměrnější ako u stávajúcich spósobov mazania.The solution of the rotating workpiece clamping device according to the invention is to improve the lubrication of all sliding surfaces. The kinematic mechanism of the clamping device ensures an even distribution of the lubricant on the individual sliding surfaces with its stroke, while achieving! Significantly higher pressures in the lubricant distribution, which reliably transport the lubricant to all sliding surfaces. Another advantage of using a lubricant accumulator is the possibility of gradually lubricating the sliding surfaces in batches, which makes it possible to prolong the time intervals of lubricant replenishment and at the same time the efficiency of the clamping device in the interval between two fillings is more uniform

Upínacie zariadenie rotačných obrobkov podlá vynálezu je znázorněné na připojených výkresoch, kde na obr. 1 je příklad vytvorenia premazávacieho zariadenia v ozubenom kameni sklučovadla v čiastočnom pohlade a řeze, na obr. 2 je vidieť obdobné vytvorenie premazávacieho zariadenia s dávkovačom maziva v pohlade a řeze, na obr. 3 je to isté premazávacie zariadenie s iným príkladom riešenia dávkovača v čiastočnom řeze, na obr. 4 je příklad vytvorenia premazávacieho zariadenia v upínacej čelusti sklučovadla v čiastočnom pohlade a řeze a na obr. 5 je vidieť alternatívny příklad vytvorenia premazávacieho zariadenia v čiastočnom pohlade a řeze.The clamping device of rotating workpieces according to the invention is shown in the accompanying drawings, where in fig. 1 is an example of an embodiment of a lubricating device in a chuck stone in a partial view and section, FIG. 2 shows a similar embodiment of a lubricating device with a lubricant dispenser in a view and a section, FIG. 3 is the same lubricating device with another example of a dispenser solution in partial section, FIG. 4 is an example of the design of the lubricating device in the chuck clamping jaw in a partial view and section, and FIG. 5 shows an alternative example of the design of the lubricating device in a partial view and section.

Upínacie zariadenie 100 rotujúcich obrobkov pozostáva zo základného telesa 110, v ňom usporiadaného kinematického mechanizmu 120 a premazávacieho zariadenia 130 vytvořeného v niektorom z prvkov jJA kinematického mechanizmu 120 Na obr. 1 je příklad vytvorenia premazávacieho zariadenia 130 v ozubenom kameni 121b. Samotné premazávacie zariadenie 130 pozostáva z akumulátora 131 maziva 200, aktívneho člena 132 a aretačnej pružiny 132a. Akumulátor 131 maziva 200 je dutina kruhového prierezu z jednej strany ohraničená aktívnym členom 132 a z druhej strany uzatvorená zaslepovacou zátkou 135. Akumulátor 131 je přepojený s mazničkou 111 umiestnenou v základnom telese 110 plniacim kanálom 112 prechádzajúcim základným telesomThe rotating workpiece clamping device 100 consists of a base body 110, a kinematic mechanism 120 arranged therein, and a lubricating device 130 formed in one of the elements jA of the kinematic mechanism 120. FIG. 1 is an example of an embodiment of a lubrication device 130 in a rack stone 121b. The lubrication device 130 itself consists of an accumulator 131 of lubricant 200, an active member 132 and a locking spring 132a. The accumulator 131 of the lubricant 200 is a cavity of circular cross-section bounded on one side by the active member 132 and closed on the other side by a blanking plug 135. The accumulator 131 is connected to the lubricator 111 located in the base body 110 by a filling channel 112 passing through the base body.

CS 266 294 Bl 3CS 266 294 Bl 3

110 i ozubeným kameňom 121b. Z akumulátorů 131 je mazivo 200 vedené rozvodnými kanálmi 133 ku klzným plochám 124 prvkov 121 kinematického mechanizmu 120, v tomto případe ku klzným plochám 124 ozubeného kameňa 121b a klzným plochám 124 zubu 122 šmýkadla 121a, ktorý je vedený v šikmej drážke j_23 ozubeného kameňa 121b, pričom účinnost mazania je zvýšená mazacími drážkami 136 v klzných plochách 124.110 and a toothed stone 121b. From the accumulators 131, the lubricant 200 is guided through the distribution channels 133 to the sliding surfaces 124 of the elements 121 of the kinematic mechanism 120, in this case to the sliding surfaces 124 of the tartar 121b and the sliding surfaces 124 of the tooth 122 of the slider 121a. wherein the lubrication efficiency is increased by the lubrication grooves 136 in the sliding surfaces 124.

V definovanej poloho prvkov 121 kinematického mechanizmu 120 napr. v hornej úvrati čelustí 121c je plniaci kanál 112 otvorený a je umožněné naplnenie akumulátora 131 mazivom 200 cez mazničku 111 napr. ručným lisom. Pri plnění akumulátora 131 sa aktívny člen j_32 vysúva z dutiny akumulátora 131 a zvačšuje jeho objem až kým sa jeho dorazový kolík 132b oprie o základné teleso 110 a jeho aretačná pružina 132a je stlačená. Následné sa vykoná zdvih z prvku 121 kinematického mechanizmu 120. objem maziva 200 odpovedajúci zdvihu z je z akumulátora 131 vytlačený rozvodnými kanálmi 133 k mazaným klným plochám 124. Pri vykonaní zdvihu z je plniaci kanál 112 postupné uzatvorený, čím je chráněná maznička 111 proti velkým tlakom maziva 200 z premazávacieho zariadenia 130. Po vykonaní zdvihu z” polohu je aretačná pružina 132a aktívny člen 132 v dosadnutej polohe, čo je dóležité najma pri vyšších otáčkách sklučovadla z hladiska jeho dynamickéj vyváženosti.In the defined position of the elements 121 of the kinematic mechanism 120 e.g. at the top dead center of the jaws 121c, the filling channel 112 is open and it is possible to fill the accumulator 131 with lubricant 200 through a lubricator 111 e.g. hand press. When filling the accumulator 131, the active member 32 slides out of the cavity of the accumulator 131 and increases its volume until its stop pin 132b rests on the base body 110 and its locking spring 132a is compressed. Subsequently, a stroke is made from the element 121 of the kinematic mechanism 120. The volume of lubricant 200 corresponding to the stroke z is pushed out of the accumulator 131 through the distribution channels 133 to the lubricated surfaces 124. When the stroke z is performed, the filling channel 112 is gradually closed, lubricant 200 from the lubricating device 130. After performing the stroke from the "position", the locking spring 132a is the active member 132 in the seated position, which is important especially at higher speeds of the chuck from the point of view of its dynamic balance.

Je výhodné premazávacie zariadenie 130 doplnit dávkovačom 134 (obr. 2, obr. 3), ktorý pozostáva například z piestika 134a a dávkovacej pružiny 134b, ktoré sú zaradené s aktívnym členom 1_32 a mazivom 200 do série. Vplyvom tohto usporiadania sa ku klzným plochám 124 vytlačí. len část objemu maziva 200 a jeho vSčšia část zostáva v akumulátore 131, nakolko dávkovacia pružina 134b správné dimenzovaná umožňuje po přeplnění rozvodných kanálov 133 a mazacích drážok 136 posunutie piestika 134a v smere zvačšenia objemu akumulátora 131. Ďalšia dávka objemu maziva 200 z akumulátora 131 sa vytlačí až po úbytku maziva 200 z mazacích drážok 136. Tento proces sa opakuje až do vyprázdnenia akumulátora 131. Usporiadanie dávkovače 134 na obr. 3 zaručuje aretáciu aktívneho člena 132 v zadnej polohe, čím nie je nutné použit samostatné aretačnú pružinu 132a na tento účel.It is advantageous to supplement the lubrication device 130 with a dispenser 134 (Fig. 2, Fig. 3), which consists, for example, of a piston 134a and a dispensing spring 134b, which are arranged in series with the active member 132 and the lubricant 200. As a result of this arrangement, it is pushed towards the sliding surfaces 124. only a portion of the volume of lubricant 200 and a larger portion thereof remains in the accumulator 131, as the metering spring 134b properly sized allows the piston 134a to move in the direction of increasing the volume of the accumulator 131 after overflowing the distribution channels 133 and lubrication grooves 136. only after the lubricant 200 has disappeared from the lubrication grooves 136. This process is repeated until the accumulator 131 is emptied. The dispenser arrangement 134 in FIG. 3 ensures that the active member 132 is locked in the rear position, so that it is not necessary to use a separate locking spring 132a for this purpose.

Je možné premazávacie zariadenie 130 vytvořit tak, aby zdrojom tlaku maziva 200 pri jeho premiestnení ku klzným plochám 124 bola odstředivá sila aktívneho člena 132, připadne piestika 134a dávkovača 134 (obr. 4),It is possible to design the lubricating device 130 so that the source of pressure of the lubricant 200 when it is moved to the sliding surfaces 124 is the centrifugal force of the active member 132 or the piston 134a of the dispenser 134 (Fig. 4).

Intenzita premazávania je priamo úměrná otáčkám upínacieho zariadenia 100. Dokonalejšie premazanie klzných plčch 124 je možné občas prevádzat krátkodobým zvýšením otáčok.The intensity of lubrication is directly proportional to the speed of the clamping device 100. Improved lubrication of the sliding plates 124 can sometimes be performed by a short-term increase in speed.

Uvedené riešenie upínacieho zariadenia rotujúcich obrobkov je možné s výhodou aplikovat v prevádzkových režimoch s vyriešeným automatickým doplňováním maziva.Said solution of the clamping device of rotating workpieces can be advantageously applied in operating modes with solved automatic lubricant replenishment.

Claims

With a toothed stone 121b. From the accumulators 131, the lubricant 200 is guided through the distribution channels 133 to the sliding surfaces 124 of the elements 121 of the kinematic mechanism 120, in this case the sliding surfaces 124 of the toothed stone 121b and the sliding surfaces 124 of the tooth 122 of the slide 121a, which is guided in the inclined groove 123 of the tooth stone 121b, is increased by the lubricating grooves 136 in the sliding surfaces 124. In a defined position of the elements 121 of the kinematic mechanism 120, e.g., in the top dead center 121c, the filling channel 112 is open and the accumulator 131 is lubricated by the lubricant 200 through a lubricator 111, e.g. When the accumulator 131 is filled, the active member 132 extends from the cavity of the accumulator 131 and increases its volume until its stop pin 132b is applied to the base body 110 and its detent spring 132a is compressed. Subsequently, the stroke "of" the element 121 of the kinematic mechanism 120 is carried out. The stroke volume 200 corresponding to the stroke "z" from the accumulator 131 is displaced by the distribution channels 133 to the lubricated gripping surfaces 124. When the stroke "z" is executed, the filling channel 112 is gradually closed, thereby the lubricator 111 is opposed to the high pressure of the lubricant 200 from the lubrication device 130. After the stroke " z " has been performed, the locking spring 132a is the active member 132 in a position that is critical to the dynamic balance of the chuck. Fig. 130 is supplemented with dispenser 134 (Fig. 2, Fig. 3), which consists, for example, of piston 134a and dispensing spring 134b, which are engaged with active member 132 and lubricant 200 in series. the volume of lubricant 200 and its larger part remains in the accumulator 131, as the dosing spring 134b spr. The current dimension allows the displacement of the piston 134a in the upward-facing direction of the accumulator volume 131 after overfilling the distribution channels 133 and the lubricating grooves 136. A further dose of the lubricant volume 200 from the accumulator 131 is expelled after the loss of lubricant 200 from the lubricating grooves136. This process is repeated until the accumulator 131 is emptied. The arrangement of the dispenser 134 in Fig. 3 ensures the locking of the active member 132 in the rear position, whereby a separate detent spring 132a is not required for this purpose. It is possible to form the lubrication device 130 such that the source of the lubricant pressure 200 receiving the displacement to the sliding surfaces 124 is the centrifugal force of the active member 132 or the dispenser 134a 134a (FIG. 4). The lubrication intensity is directly proportional to the speed of the clamping device 100. it is possible to operate from time to time by increasing the speed. Said solution of the clamping device of rotating workpieces can be advantageously applied in operating modes with solved automatic refilling of lubricant. SUBJECT OF THE INVENTION

Clamping device of rotating workpieces consisting of a base body and a force kinematics mechanism, characterized in that at least one board (121) of the kinematic mechanism (120) is provided with a lubrication device (130) formed by a lubricant accumulator (131) and at least one active member (132) having at least one degree of freedom of movement, wherein the lubricant accumulator (131) is connected by distribution channels (133) to the sliding surfaces (124) of the elements (121) of the kinematic mechanism (120) and the filling channel ( 112) with a nipple (111).

A rotating workpiece holding device according to claim 1, characterized in that the active member (132) of the lubrication device (130) is engaged with the base body (110) and / or the element (121) of the kinematic mechanism (120) of the clamping device (100) and is movable by the cinematic mechanism (120) relative to the element (121) in which it is stored.

The clamping device of the rotating workpieces according to claim 1 or 2, characterized in that the active CS 266 294 B1 lubricant device member (132) is movable by its centrifugal force.

4. The clamping device of the rotating workpieces according to claim 1, wherein a lubricant dispenser (200) in series with the active substance (132) and lubricant (200) is disposed in the lubricating device (130). 11 | Wherein the lubricant dispenser (134) is composed of a piston (134a), and the lubricant dispenser (200) is composed of a piston (134a). and a dosing spring (134b).

Clamping device of rotating workpieces according to claims 1 to 5, characterized in that a locking spring (132a) is arranged in the intermediate member (132) and in the element (121) of the kinematic mechanism (120).

7. The clamping device of rotating workpieces according to claim 1, wherein the piston (134a) of the dispenser (134) is movable by its centrifugal force. 3 drawings