CS272733B1

CS272733B1 - Chamfering device

Info

Publication number: CS272733B1
Application number: CS172488A
Authority: CS
Inventors: Pavel Ing Kastel; Jozef Ing Cejp; Juraj Ing Petrik; Marian Charvat
Original assignee: Kastel Pavel; Cejp Jozef; Petrik Juraj; Marian Charvat
Priority date: 1988-03-17
Filing date: 1988-03-17
Publication date: 1991-02-12
Also published as: CS172488A1

Abstract

The device for bevelling the edges of holes on work pieces (17) is designed mainly for multi-spindle operational heads of single-purpose working machines that are equipped with telescopically carried jig plate (7). The device consists of a spindle (1) with tool (2), which is arranged in a hollow cylindrical body (5) with flange (6) for attaching to the jig plate (7) and it is characteristic by the fact that in the rear part of the spindle (1) there is a helically formed toothing (4) and the hollow space in the body (5) has two graduated holes (8, 9), where in the bigger hole (8) there is a sliding guiding disc (10) and in the point of hole (8, 9) cross-over there is a front surface (19) created in the body (5). The front surface is close connected with toothed ring (11) with inner toothing (16). On the spindle (1) there is a wiper ring (12) equipped with a sealing element.<IMAGE>

Description

Vynález sa týká zrážacieho zariadenia pre zrážania hrán otvorov na obrobkooh po vrtacích operáciách, pre viacvreteno''é operačně hlavy, opatřené teleskopicky nesenou vrtacou deskou, inšta¹ováné na jednoúčelových obrábacích strojoch.The invention relates to a precipitation process for chamfering the hole obrobkooh the drilling operations, the operational head viacvreteno''é fitted telescopically carried by a drilling plate, Inst ¹ to alkylated single-purpose machine tools.

Zrážanis hrán otvorov alsbo odihlanie otvorov na obrobkoch po ich vyhotoveni vrtacím··. operáciami sa v súčasnosti vykonává pracovným nástrojom, uchytaným v samoctatnom vrateni so samostatným náhonom. V případe, že sú všatky pracovně stanice stroja vytažené a nie je možnost umiestniť zrážacie vřeteno na stroji, vykonává sa zražsnis alsbo odíhlenis mimo stroja manuálně, resp. na pomocnom jednovratenovom vrtacom zariadení s manuálnym alebo strojovým ovládáním posuvu nástroja. Zrážanis alebo odihlenie pomocou vlastného vřetena ja sice přesné a spolehlivé, ale na úkor vyššiaho nároku na počet precovných poloh a vyššej ceny stroja. Manuálně zrážanie hrán alebo odihlenie otvorov představuje pre obsluhu stroja zvýšená fyzická námahu pri manipulácii s obrobkem.Drilling holes or drilling holes on workpieces after drilling. operations are currently carried out by means of a working tool mounted in a self-return with a separate drive. In the event that all the machine workstations are pulled out and there is no possibility to place the shrinking spindle on the machine, the cutting or alignment of the machine is carried out manually, respectively. on auxiliary single-reversible drilling equipment with manual or machine tool feed control. Precipitating or deburring with its own spindle is accurate and reliable, but at the expense of higher demands on the number of precision positions and higher machine costs. Manually chamfering edges or deburring holes creates increased physical effort for the machine operator when handling the workpiece.

Pri zrážani hrán otvorov alebo ich odihleni vzniká nepatrný razný odpor a z toho titulu sú zariadenia s rotujúcim vretenom zbytočna předimenzovaná, vřeteno s nástrojom rotuje vzhladom na extrémně krátký čas operácie zrážania alabo odihlenia převážný čas práce stroja naprázdno, pričom sa spotřebuje energia bez užitku.When burring or deburring the edges, there is a slight resistivity, and therefore rotating spindle devices are unnecessarily oversized, the tool spindle rotating due to the extremely short chamfering or deburring operation, the bulk of the machine's idle time, while consuming unnecessary energy.

Uvedené nevýhody odstraňuje zrážacie zariadenie hrán otvorov, ktorého vřeteno s nástrojom je uložené v dutom valcovom telese, uzavretom dnom s otvorom pre přívod tlakového média, opatrenom na opačnom konci přírubou pre uchytenie telesa k vrtacej doske viacvratenovsj opsračnej hlavy, ktorého podstata spočiva v tom,' že v zadnej časti vřetena je vytvořené skrutkovicové ozubenie a drážka pre tasnenie, dutina talesa zrážacieho zariadenia má dva odstupňované otvory, pričom vo vačšom otvore telesa, orisntovanom bližšie k vrtacej doske, je posuvna uložený vodiaci kotúč, spojený s vretenom, v otvore telesa bližšom ku dnu Je posuvné uložená časf vřetena s ozubením a těsněním, a v mieste přechodu odstupňovaných otvorov dutiny telesa je vytvořená čelná plocha s ktorou je pevne spojený ozubený krúžok s vnútorným ozubením, ktoré je v styku s ozubením vřetena.These drawbacks are eliminated by the chamfering device, the tool spindle of which is housed in a hollow cylindrical body closed by a bottom with a pressurized fluid supply opening provided with a flange at the opposite end for attaching the body to the drilling plate of a multi-return opaque head. that in the rear part of the spindle there is a helical toothing and a drawing groove, the tall cavity of the chamfering device has two graduated holes, wherein in the larger body opening oriented closer to the drilling plate there is a slidingly mounted guide disc connected to the spindle. A spindle portion with a toothing and seal is displaceably mounted, and at the point of transition of the stepped holes of the body cavity, a face is formed with which a toothed ring with an internal toothing is in contact with the spindle toothing.

Ďalej vynález spočívá v tom, že medzi vodiacim kotúčom a ozubením vřetena je na vřetení uložený stieraci krúžok, opatřený tesniacim prvkom.Furthermore, the invention consists in providing a wiper ring provided with a sealing element between the guide disk and the spindle toothing.

Vyššim účinkom vynálezu je, že pri popisanom usporiadaní na viacvretenovej operačnaj hlavě obrábacieho stroja vznikajú priestorové a nákladové úspory a úspory energie v porovnaní s doterajšim stavom techniky. Pre vyvodenie rotačného pohybu nástroja sa v zariadani podía vynálezu využívá posuv operačnej hlavy a jej vrtacej došky, pričom stály přítlak nástroja k obrobku zabezpečuje tlakové médium. Miesto tlakového média može byť k zabezpečeniu pritlaku použitá tlačná pružina. 'A higher effect of the invention is that in the described arrangement on a multi-spindle operating head of a machine tool, space and cost savings and energy savings are achieved compared to the prior art. In order to derive the rotational movement of the tool, the device according to the invention uses the displacement of the operating head and its drill bit, while a constant pressure of the tool against the workpiece is provided by the pressure medium. A compression spring may be used instead of the pressure medium to provide pressure. '

Přiklad prevedenia vynálezu je znázorněný v osovom řeze na obr. 1 a na obr. 2 ja znázorněná alternativa s použitím tlačnaj pružiny.An exemplary embodiment of the invention is shown in axial section in FIG. 1 and FIG. 2 shows an alternative using a compression spring.

Zrážacie zariadenie podlá vynálezu Je tvořené telesom 5, prichytenom skrutkami pomocou príruby 6 k teleskopicky nesensj vrtacej doske 7 a vretenom JL uloženým v telese 5 v jeho otvore 9 o menšom priemere. Vřeteno JL je opatřené dutinou pre uchytenie stopky zrážacieho nástroja 2, pričom je v zadnej časti na vonkajšom valcovom povrchu opatřené skrutkovicovo usporiadaným ozubením 4 a drážkou pra tasnenia 3. Dno 14 talasa 5 ja opatřené privodom 15 tlakového média. V prednej časti vřetena 1 je pevne uchytený vodiaci kotúč JLO, ktorý vonkajšim povrchom vedla vřeteno JL vo Vačšom otvore 8 telesa 5. Na přechode oboch otvorov .8, 9 telesa 5 je k čelnej ploché 19 vo vnútri telesa 5 prichytsný ozubený krúžok 11 s vnútorným ozubením JB, do ktorého zubových medzier zapadá ozubanie 4 vřetena JL, ktoré medzi vodiacim kotúčom 10 a začiatkom ozubenia 4 nesie stieraci krúžok 12, opatřený tesniacim prvkom 13.The chamfering device according to the invention consists of a body 5, fastened by screws by means of a flange 6 to a telescopically unsupported drilling plate 7, and spindle 11 housed in the body 5 in its opening 9 of smaller diameter. The spindle 11 is provided with a cavity for receiving the shank of the shrinking tool 2, provided with a helical toothing 4 and a flute groove 3 at the rear of the outer cylindrical surface. The bottom 14 of the thalass 5 is provided with a pressure medium supply 15. In the front part of the spindle 1 is fixedly fixed a guide disc JLO, which guided the outer surface of the spindle J1 in the larger hole 8 of the body 5. At the transition of the two holes 8, 9 of the body 5 there is a toothed ring 11 with inner a toothing JB into which the tooth gaps fit the spindle toothing 4, which carries a scraper ring 12 provided with a sealing element 13 between the guide disc 10 and the beginning of the toothing 4.

Počas pracovného cyklu stroja vřtacia doska 7 viacvretenovej operačnej hlavy koná translačný pohyb, ktorý možno rozčlenit na přisuv k obrobku 17, pracovný posuv k obrobku 17 a rýchloposuv spať do počiatočnaj polohy. Vo fáze pracovného posuvu sa nástroj 2 ffDuring the machine cycle, the drilling plate 7 of the multi-spindle operating head performs a translational movement that can be divided into a feed to the workpiece 17, a work feed to the workpiece 17 and a rapid traverse to the starting position. In the feedrate phase, the tool 2 ff

CS 272 733 Bl približi k obrobku 17 a oprie o hranu otvoru, ktorý sa má opracovat, Počas Salšieho pohybu vrtacej došky 7 sa vratano 1 s nástrojom 2 v dosledku vazby ozubenia 4 vřetena JL s vnútorným ozubením 16 ozubeného krúžka 11 natáča, pričom nástroj 2 koná technologická operáciu a je k obrobku 17 pritláčaný konštantným tlakom tlakového média, predom nastaveným na správnu hodnotu. zároveň pracujú ostatně nezakreslené vretená viacvretenovej operačnej hlavy. Pri spatnom rýchloposuve do počiatočnej polohy sa nástroj 2 3 vretsnom JL automaticky přestaví do východzej polohy.CS 272 733 B1 approaches the workpiece 17 and leans against the edge of the hole to be machined. During the lateral movement of the drilling thatch 7, the tool 1 is returned as a result of the toothing 4 of the spindle 16 with the internal toothing 16 of the toothed ring 11. It performs a technological operation and is pressed against the workpiece 17 by a constant pressure of the pressure medium preset to the correct value. at the same time the spindles of the multi-spindle operating head are not drawn. In the case of a poor rapid traverse to the starting position, the tool 2 3 automatically returns to the starting position.

Alternativně možno použit, ako naznačuje obr. 2, tlačnú pružinu 18, opierajúcu sa jedným koncom o dno 14 telesa 5 a druhým koncom o dno dutiny vřetena JL, vytvoranaj pra uloženia danej tlačnej pružiny 18.Alternatively, as shown in FIG. 2, a compression spring 18 supported by one end against the bottom 14 of the body 5 and the other end against the bottom of the cavity of the spindle 11 formed to receive the compression spring 18.

Vynález ja možné využit aj pri priamom umiastneni na teleso viacvretenovej operačnej hlavy v případe, ža táto nie je opatřená nesenou vrtacou doskou 7.The invention can also be used for direct placement on the body of a multi-spindle operating head in case the latter is not provided with a supported drill plate 7.

Claims

OBJECT OF THE INVENTION

Chamfering device for drilling holes on workpieces, in particular on multi-spindle operating heads with a telescopically mounted drilling plate, the tool spindle of which is housed in a hollow cylindrical body, a one-sided closed bottom with an opening for supplying pressurized medium. . for fastening the body to the drilling plate, characterized in that a toothing (4) is helically formed on the rear part of the spindle (1), the sealing groove (3) and the cavity in the body (5) has two graduated holes (8, 9), wherein in the larger bore (3) in the cavity of the body (5), oriented closer to the drill plate (7), there is a slidingly mounted guide disc (10) coupled with its stored spindle (1) at a location outside the toothing (4) and 9) of the body (5), adjacent to its bottom (14), is a slidingly mounted part of the spindle (1) with the toothing (4) as well as the seal (3) and at the transition point of the holes (8, 9) in the body (5) an end face (19) is formed to which the toothed ring (11) is fixedly connected to the internal toothing (16), which engages the toothing (4) of the spindle (1) and between the guide disc (10) and the toothing (4) of the spindle (1) is placed on the spindle (1) a wiper ring (12), provided with a sealing element