CS269512B1

CS269512B1 - Toolholder clamping head, threaded

Info

Publication number: CS269512B1
Application number: CS872705A
Authority: CS
Inventors: Martin Polak
Original assignee: Martin Polak
Priority date: 1987-04-16
Filing date: 1987-04-16
Publication date: 1990-04-11
Also published as: CS270587A1

Abstract

Upínacia hlava držiaka nástroja, pozostáva z telesa. opatřeného axiálnym upínacím otvorom, členěným na válcová vodiacu časl a na záberovo profilovaná unášaclu časl. Teleso je členené na základný dlel a přídavný dlel a je opatřené kotviacou zámkou držiaka. Vodiaca časl upínacieho otvoru je usporiadaná v prí- davnom dleli telesa hlavy, zatial čo unášacia část upínacieho otvoru je v základnom dleli. Přídavný dlel je svojím pripevňovacím otvorom uložený na valcovom čele základného dielu telesa hlavy. RieSeným problémom je konštrukčné zjednoduSenie upínacej hlavy, čo sa dosahuje tým, že kotviaca zámka je usporiadaná na rozhraní vodiacej časti upínacieho otvoru a k nej přilehlého konca pripevňovacieho otvoru přídavného dielu telesa hlavy.The clamping head of the tool holder consists of a body provided with an axial clamping hole, divided into a cylindrical guide part and an engagement-profiled driving part. The body is divided into a basic part and an additional part and is provided with an anchoring lock of the holder. The guide part of the clamping hole is arranged in the additional part of the head body, while the driving part of the clamping hole is in the basic part. The additional part is placed with its fastening hole on the cylindrical face of the basic part of the head body. The problem solved is the structural simplification of the clamping head, which is achieved by the anchoring lock being arranged at the interface of the guide part of the clamping hole and the adjacent end of the fastening hole of the additional part of the head body.

Description

Vynález sa týká upínacej hlavy držiaka nástroja, najmS závitovacleho, pozostávajúcej z telesa, členěného na základný dlel a přídavný dlel, opatřeného axiálnym upínacím otvorom, členěným na válcové vodiacu část a na záberovo profilované unášaciu část, ako aj kotviacou zámkou držiaka, kde vodlaca část upínacíeho otvoru je usporiadané v prídavnom dleli telesa hlavy, zatlal čo unášacla část upínacleho otvoru Je v základnom dleli a kde přídavný dlel je svojim'prlpevfiovacim otvorem uložený na valcovom čele základného dielu telesa hlavy.The invention relates to a clamping head of a tool holder, in particular a threading one, consisting of a body divided into a basic part and an additional part, provided with an axial clamping hole, divided into a cylindrical guiding part and an engagement-profiled driving part, as well as an anchoring lock of the holder, where the guiding part of the clamping hole is arranged in the additional part of the head body, while the driving part of the clamping hole is in the basic part and where the additional part is placed with its fastening hole on the cylindrical face of the basic part of the head body.

Podía známého stavu techniky bývá teleso upínacej hlavy vytvořené ako celistvý, jednodielny kus. Takto je rlešená například aj upínacia hlava podía PV 1560-71, Λ0 č. 150 052. Válcová vodlaca část upínacleho otvoru bezprostredne nadvSzuje v tom istom dlelcl na záberovo profilované, najčastejšie štvorhrannú unášaciu část, prlčom na rozhraní oboch tjfciito častí je z technologických dovodov vytvořený vnétorný obvodový zápich. Na konci upínacieho otvoru bývá ešte čalší prlestor, do ktorého prečnieva nastavitelná dorazová skrutka, ktorá je svojou hlavou zachytená o vnétorný konlec radiálně orientovanej kotviacej zámky. Nevýhodou takéhoto rlešenia Je Jednak velký axiálny rozměr upínacej hlavy a Jednak jej velká náročnost na spotřebu materiálu. Okrem toho je známa taká upínacia hlava, ktorá je vytvořená priamo v čelnej časti závitovacej patrony. Jej tvar je zřejmý například z obrázkovej^dokumentácie k dvojdielnemu držiaku závitovacleho nástroja podía PV 8798-84, AO č. 248 489. Aj takáto upínacia hlava má povedla výhod aj svoje nevýhody. Jednou z týchto nevýhod je značný vonkajší priemer závitovacej patrony v tom prlereze, kde sa nachádza vratná pružina rýchlouvolňovacej kotviacej zámky. Tým je daný aj relativné velký priemer východiskového materiálu závitovacej patrony, a preto ani v tomto případe nle sé celkové materiálové náklady podstatné nižšle. Určitou nevýhodou je aj komplikovaně jšie utesnenie hlavy proti prenikaniu nečistot a triesok do jej funkčných častí. U novšieho rlešenia podía PV 1924-87 je teleso upínacej hlavy rozdělené na základný diel a přídavný dlel, prlčom unášacia část upínacleho otvoru sa nachádza v základnom dleli a vodlaca část v prídavnom dleli. Tým sa dosiahlo výrazné zdokonalenie upínacej hlavy, avšak aj v tomto případe sé ešte nutné vSčšie zásahy do základného dielu telesa hlavy, resp. čelnej časti závitovacej patrony.According to the known state of the art, the body of the clamping head is formed as a solid, one-piece piece. This is how the clamping head according to PV 1560-71, Λ0 No. 150 052 is designed, for example. The cylindrical guide part of the clamping hole immediately continues in the same part to the engagement-profiled, most often square driving part, while an internal circumferential groove is formed at the interface of both parts for technological reasons. At the end of the clamping hole there is still another space into which an adjustable stop screw protrudes, which is caught by its head on the internal end of the radially oriented anchor lock. The disadvantage of such a solution is both the large axial dimension of the clamping head and its high material consumption. In addition, a clamping head is known which is formed directly in the front part of the threading cartridge. Its shape is clear, for example, from the pictorial documentation for the two-part threading tool holder according to PV 8798-84, AO No. 248 489. Such a clamping head also has its advantages and disadvantages. One of these disadvantages is the considerable outer diameter of the threading cartridge in the section where the return spring of the quick-release anchor lock is located. This also gives rise to a relatively large diameter of the starting material of the threading cartridge, and therefore even in this case the total material costs are not significantly lower. A certain disadvantage is also the more complicated sealing of the head against the penetration of dirt and chips into its functional parts. In the newer version according to PV 1924-87, the body of the clamping head is divided into a basic part and an additional part, while the driving part of the clamping hole is located in the basic part and the driving part in the additional part. This has achieved a significant improvement of the clamping head, but even in this case, more interventions are still necessary in the basic part of the head body, or. the front part of the threading cartridge.

Uvedené nevýhody odstrfiuje upínacia hlava držiaka nástroja podlá vynálezu, ktorého podstata spočívá v tom, že kotviaca zámka sa nachádza na rozhraní vodiacej časti upínacleho otvoru a k nej přilehlého konca pripevňovacieho otvoru přídavného dielu telesa hlavy.The above disadvantages are eliminated by the clamping head of the tool holder according to the invention, the essence of which lies in the fact that the anchoring lock is located at the interface of the guide part of the clamping hole and the adjacent end of the attachment hole of the additional part of the head body.

Výhodou upínacej hlavy podía vynálezu, popři jej kratšom axiálnom rozmere, menšej materiálovej náročnosti, ako aj rýchlom a jednoduchou; uvolňování a lepšej utesnitelnosti proti nečistotám a trieskam, je aj značné zníženle trieskovo-obrábacích ékonov na základnom dleli telesa, resp. na čelnej časti závitovacej patrony. Okrem toho možno bez podstatných úprav presúvat přídavný diel voči základnému dielu telesa v axiálnom smere, čo je výhodné z hlediska možnosti upínania nástrojov rozličných dlžok. Dalej je výhodné, ked je kotviaca zámka vyhotovená ako medzistena na prídavnom dleli telesa hlavy a je opatřená přechodovým otvorom súosovým s upínacím otvorem, prlčom prlerez přechodového otvoru je obdobný prierezu unášacej časti upínacleho otvoru, voči ktorej Je v základnej uzamknutej polohe hlavy uhlovo presadený. V takomto případe sa zníži celkový počet súčiastok na minimálnu mieru a dosiahne sa relativné velká styčná plocha kotviacej zámky so styčnými častaml držiaka, čo spolu ešte výraznejšle zvyšuje funkčnú spolehlivost upínecej hlavy. Tieto přednosti sú obzvlášt výrazné pri menších dimenziách držiakov, kde aj plytké zapustenie medzisteny do drážky na obvode držiaka vytvára spolehlivý a viacnásobný záchytný prostrledok.The advantage of the clamping head according to the invention, in addition to its shorter axial dimension, lower material requirements, as well as quick and easy; release and better sealing against dirt and chips, is also a significant reduction in chip-cutting effects on the basic part of the body, or. on the front part of the threading cartridge. In addition, the additional part can be moved in relation to the basic part of the body in the axial direction without significant modifications, which is advantageous from the point of view of the possibility of clamping tools of different lengths. It is further advantageous if the anchor lock is designed as a partition on the additional part of the head body and is provided with a transition hole coaxial with the clamping hole, the cross-section of the transition hole being similar to the cross-section of the driving part of the clamping hole, to which it is angularly offset in the basic locked position of the head. In this case, the total number of components is reduced to a minimum and a relatively large contact area of the anchor lock with the contact parts of the holder is achieved, which together significantly increases the functional reliability of the clamping head. These advantages are particularly pronounced with smaller dimensions of the holders, where even the shallow recessing of the intermediate wall into the groove on the circumference of the holder creates a reliable and multiple gripping means.

Příklad vyhotovenia upínacej hlavy podía vynálezu je znázorněný na výkrese, na ktorom obr. 1 představuje nárysný rez upínacej hlavy v uzamknutej polohe nástroja, obr. 2 bokorysný rez hlavou bez držiaka v rovině A-A z obr. 1.An example of a clamping head according to the invention is shown in the drawing, in which Fig. 1 is a front section of the clamping head in the locked position of the tool, Fig. 2 is a side section of the head without the holder in the plane A-A of Fig. 1.

Upínacia hlava držiaka pozostáva z telesa χ, opatřeného axiálnym upínacím otvorom 2, členěným po dlžke na valcovú vodiacu část 3 a na záberovo, v danom případe štvorcovoThe clamping head of the holder consists of a body χ, equipped with an axial clamping hole 2, divided lengthwise into a cylindrical guide part 3 and an engagement part, in this case square.

CS 269 512 Bl profilovaná unášaciu 8aal £, v abode a příslušnými prierez·! držiaka 5 nástroja. Nástrojod je závitník 6, Těleso £ hlavy je členené na základný dlel £ a přídavný dlel S_t opatřený kotviacou zánkou 9 držiaka £. Upínací otvor 2 je členený tak, že jeho válcová, vodiaca část 3 aa naohádza v prídavnom dleli 8, zatlal 8o je záberovo profilovaná, unášaoia Sasi 4 je v základnom dleli 7 telesa £ hlavy. Kotviaca zámka £ sa naohádza v radiálnej rovině 10 na rozhraní vodiaoej časti 3 upínaoieho otvoru 2 a k nej přilehlého konoa prlpevňovacieho otvoru 11 přídavného dlelu 8 telesa 1 hlavy. V pripevňovaoom otvore 11 je otoSne uložená válcové Selo 12 základného dlelu 7, telesa £ hlavy. Kotviaca zámka £ Je vytvořená ako medzistena na prídavnom dleli 8 telesa £ a je opatřená přechodovým otvorem 13 súosovým s upínacím otvorom 2. Prierez přechodového otvoru 13 je obdobný prierezu unášacej časti 4 upínaoieho otvoru 2, voči ktorému je presadený o uhol X « 45°. Přechodový otvor £3 Je o niečo volnější ako je táto unášacia část 14, aby ním mohol volné prechádzat unášaný štvorhran 14 držiaka £. V čelnej časti přídavného dlelu 8 je tesniaci krúžok 15. V základném dleli 7 telesa £ je vytvořená plytká segmentová drážka 16. ktorá vymedzuje výkyv přídavného dlelu 8 na základnom dleli 7 pri uvolňovaní držiaka 5 o uhol gf. Takéto segmentové drážky 16 sú dve a do každej z nioh zapadá koniec pripevňovaoej skrutky 17. pře ktorú sú v prídavnom dieli 8 vytvořené dva závitové otvory £8, takže je možné přídavný dlel 2 voči základnému dlelu 7 přestavovat o axiálnu vzdialenost 19.CS 269 512 Bl profiled driving 8aal £, in the body and the respective cross-sections! of the tool holder 5. The tool is a tap 6, The body £ of the head is divided into a basic part £ and an additional part S _t provided with an anchoring eye 9 of the holder £. The clamping hole 2 is divided so that its cylindrical, guiding part 3 aa is located in the additional part 8, the pressure 8o is engagingly profiled, the driving part Sasi 4 is in the basic part 7 of the body £ of the head. The anchoring lock £ is located in the radial plane 10 at the interface of the guiding part 3 of the clamping hole 2 and the adjacent end of the fastening hole 11 of the additional part 8 of the body 1 of the head. In the fastening hole 11, a cylindrical shaft 12 of the base part 7, the body £ of the head, is rotatably mounted. The anchor lock £ is formed as a partition on the additional part 8 of the body £ and is provided with a transition hole 13 coaxial with the clamping hole 2. The cross-section of the transition hole 13 is similar to the cross-section of the driving part 4 of the clamping hole 2, with respect to which it is offset by an angle X ≤ 45°. The transition hole £3 is somewhat looser than this driving part 14, so that the driven square 14 of the holder £ can freely pass through it. In the front part of the additional part 8 there is a sealing ring 15. In the base part 7 of the body £ a shallow segment groove 16 is formed, which limits the swing of the additional part 8 on the base part 7 when releasing the holder 5 by an angle gf. There are two such segment grooves 16 and the end of the fastening screw 17 fits into each of them. For which two threaded holes £8 are formed in the additional part 8, so that the additional part 2 can be adjusted relative to the base part 7 by an axial distance 19.

Kotviaca zámka £ u upinacej hlavy podlá vynálezu je vždy súčastou přídavného dlelu 8 telesa 1, a to bud pevnou, ako je to v danom případe, alebo može byť vytvořená ako vkladací kotúč vybavený přechodovým otvorom 13, připadne može byť vytvořená ako sústava radiálně orientovaných kolíkov v radiálnej rovině 10, západiek, 81 iných podobných prostrledkov.The anchor lock £ in the clamping head according to the invention is always a part of the additional part 8 of the body 1, either fixed, as in the given case, or it can be formed as an insert disc equipped with a transition hole 13, or it can be formed as a system of radially oriented pins in the radial plane 10, latches, 81 or other similar means.

Claims

2 CS 269 512 Bl profiled entrainment seat 4, in accordance with the respective tool cross section 5. ToolOne tap 6. The χ head body is subdivided into a base length χ and an additional length & " The chucking opening 2 is structured such that its cylindrical, waterproofing 3aa is retracted in an additional length 8, while the gripping profile is a part 4 of the base 7 of the body. The anchoring lock 6a and a in the plane plane 10 at the boundary of the water portion 3 of the clamping hole 2 and to the adjacent end of the fixing-hole 11 of the additional body 8 of the head. In the attachment hole 11, a cylindrical Cello 12 base plate of χ teleaa χ head is mounted. The anchoring lock 9 is formed as a partition at the additional length 8 of the body 1 and is provided with a transition hole 13 with an acoustic bore hole 2. The aperture of the transition hole 13 is similar to the cross section of the entrainment hole 4 of the clamping hole 2 which is offset by the angle X 45 °. The passage opening 13 is freer than that of the entrainment 14 so that the carriage 14 can be passed freely through it. In the front part of the additional section 8 there is a sealing groove 15. Basically, the body 7 is a shallow segmented groove 16 which defines the extensions 8 at the base length when the handle 5 is released by the angle gf. Such segmented grooves 16 are two and each of them has the end of the fixing screw 17 for which two threaded holes 18 are formed in the additional length 8 so that the additional length x can be adjusted by the axial distance 19 to the base length. the lock 8 of the clamping head according to the invention is always part of the additional housing 8, either fixed, as in the present case, or may be formed as an insertion disk provided with a transition hole 13, or may be formed radially ored pins in the radial plane 10, latches, sheet-like surfaces. BEFORE THE INVENTION METHOD

1. A toolholder clamping head, in particular a threading head, comprising a body, divided into a base member and an additional length, and provided with an axial clamping opening, an articulated cylindrical guide portion, and an engaging engagement portion, as well as an anchoring lock, where the clamping portion is the opening is clamped in the additional length of the head body, while the carrier portion of the clamping hole is in the base length and wherein the additional length of the fastening hole is supported on the cylindrical base of the base of the head body, wherein the anchoring lock (9) is arranged on an interface portion (3) of the chucking opening (2) and an adjacent end of the attachment opening (11) of the additional die (8) of the head body (1).

The toolholder clamping head according to claim 1, characterized in that the anchorage latch (9) is formed as a partition on an additional length (8) of the head body (1) and is obscured by an acoustic opening (13) with a clamping hole (2). ), wherein the aperture of the transition opening (13) is similar to the cross-section of the entrainment portion (4) of the clamping hole (2) in which it is angularly offset. 1 výkree