SI21993A - Milling tool - Google Patents
Milling tool Download PDFInfo
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- SI21993A SI21993A SI200500075A SI200500075A SI21993A SI 21993 A SI21993 A SI 21993A SI 200500075 A SI200500075 A SI 200500075A SI 200500075 A SI200500075 A SI 200500075A SI 21993 A SI21993 A SI 21993A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/24—Overall form of the milling cutter
- B23C2210/242—Form tools, i.e. cutting edges profiles to generate a particular form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/54—Configuration of the cutting part
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
Description
FrezaloCutter
Predmetni izum v okviru obdelave spada na področje frezanja, namreč k frezalom, ki so značilna po svoji obliki, zlasti k steblastim frezalom za čelno in bočno frezanje z neizmenljivimi rezili, v splošnem pa se tudi nanaša na konstrukcijske značilnosti frezal.The present invention in the context of machining belongs to the field of milling, namely milling machines, which are characterized by their shape, in particular to stem and lateral milling cutters with non-replaceable blades, and generally relates to the design characteristics of milling cutters.
Pri tem je izum osnovan na problemu, kako zasnovati frezalo za čelno in bočno frezanje, še zlasti steblasto frezalo, ki naj bi bilo dovolj togo in žilavo, obenem pa naj bi še tudi po večkratnem ostrenju bočnih rezil na obodu omogočalo frezanje pri razmeroma velikih vrtilnih hitrostih in razen tega tudi na globini, ki presega dolžino običajnega delovnega območja frezala, pri čemer naj bi bilo zmožno prenašati visoke dinamične upogibne in torzij ske obremenitve, katerim je med regularno uporabo v tovrstnem režimu izpostavljeno.The invention is based on the problem of how to design a milling cutter for frontal and lateral milling, in particular a stem milling cutter, which should be sufficiently rigid and tough, and at the same time, even after repeated sharpening of the side blades on the circumference, enables milling at relatively large rotary speeds and, in addition, at a depth beyond the length of the normal working range of the milling cutter, capable of withstanding the high dynamic bending and torsional loads to which it is subjected during regular use in this mode.
Steblasta frezala so rotacijska orodja za mehansko obdelavo materialov z odreza vanjem, ki so prirejena za vpetje v ustrezno vpenjalno pripravo, ki je gnana in vrtljiva okoli svoje vzdolžne osi. V ta namen steblasto frezalo obsega gladko cilindrično ali konusno vpenjalno steblo, h kateremu je v aksialni smeri priključeno delovno območje, ki obsega določeno število po obodu med seboj enakomerno razmaknjenih bočnih rezil, od katerih vsako poteka po vijačnici, pri tem pa je vsakemu od omenjenih bočnih rezil na čelni ploskvi frezala prirejeno še po eno čelno rezilo. Na tovrstnem frezalu je torej v osnovi možno opredeliti dve območji, in sicer vpenjalno območje oz. vpenjalno steblo in delovno območje, v katerem se nahajajo omenjena rezila. Pri tem steblo skupaj s sredico delovnega območja tvori žilavo in karseda togo nosilno jedro frezala, medtem ko so rezila in še zlasti rezilni robovi termično ali tudi drugače obdelani, kar jim zagotavlja potrebno trdoto in odpornost proti obrabi, temu ustrezno pa tudi dokajšnjo krhkost.Milling cutters are rotary tools for machining cutting materials that are adapted to be fastened to a suitable clamping device which is driven and rotatable about its longitudinal axis. For this purpose, the milling cutter comprises a smooth cylindrical or conical clamping stem, to which an axial direction is connected in an axial direction, comprising a number of circumferentially spaced side blades spaced at each circumference, each passing through a helix, each of said lateral blades on the face of the milling cutter. Therefore, in this type of milling cutter, it is basically possible to define two areas, namely the clamping zone or. clamping stem and working area in which said blades are located. The stem, together with the center of the working area, forms a tough and as rigid as possible the core of the milling cutter, while the blades, and in particular the cutting edges, are thermally or otherwise machined, which provides them with the necessary hardness and abrasion resistance and, consequently, a degree of brittleness.
Tovrstno frezalo je opisano v JP 03073210A, pri čemer gre za rezalno orodje, pri katerem sta obe območji, namreč vpenjalno in delovno, cilindrični, razen tega pa je premer vpenjalnega območja večji od premera delovnega območja, med vpenjalnim in delovnim območjem pa je na voljo karseda blago zaokrožen stopničast prehod. Tovrstno frezalo se odlikuje po svoji togosti in je ob primerni izbiri materiala, iz katerega sestoji, in/ali površinskih in/ali termičnih obdelav lahko primemo tudi za obdelavo pri visokih rezalnih hitrostih /tkzv. high-speed cutting/. Vendar pa je pri tem globina obdelave vselej omejena z dolžino delovnega območja, medtem ko obdelavo z bočnimi rezili na globini, ki bi bila večja od dolžine delovnega območja, onemogoča prisotnost debelejšega vpenjalnega območja. Kot enega od možnih ukrepov s tem v zvezi gre omeniti vpetje frezala v takem položaju, da se delovno območje nahaja karseda izven vpenjalne naprave, vendar pa tak ukrep znatno poslabša zanesljivost vpetja in tudi togost frezala, kar se odraža v možnosti pojava vibracij in poslabšanja točnosti obdelave, obenem pa v znatno manj ugodnem obremenitvenem stanju v samem frezalu. Temu v izogib proizvajalci orodij v ta namen nudijo frezala ali celo skupine frezal določenega premera stebla in premera delovnega območja z različnimi dolžinami vpenjalnega območja in delovnega območja, vendar pa je nabava in posest celotnih asortimentov frezal za uporabnike ekonomsko lahko nedvomno zelo obremenjujoča. V zvezi z omenjenim stopničastim prehodom, kije pri tovrstni rešitvi neizogibno prisoten, gre opozoriti tudi na problem takoimenovanega zareznega učinka, namreč dejstva, da v tovrstnih prehodih v obremenjenem stanju pride do izrazitih koncentracij obremenitev, kar v primeru dinamičnega obremenitvenega stanja vodi do pojava razpok in sčasoma do hudih mehanskih poškodb. Še zlasti je ta problem pereč pri steblastem frezalu, kjer gre običajno za kompleksno obremenitveno stanje, ki izhaja iz kombinacije normalne obremenitve, t.j. upogiba, in tangencialne obremenitve t.j. torzije, zato je med drugim tudi v izogib nepotrebni predimenzioniranosti nosilnih delov frezala, vključno stebla, pri steblastem frezalu zelo smiselno, če bi se bilo temu mogoče v kar največji meri izogniti. Pri tem je treba upoštevati tudi praktične izkušnje, iz katerih izhaja, da so posledice termične ali druge obdelave za zagotavljanje trdote in odpornosti proti obrabi v območju rezil zaznavne ne zgolj na rezilih samih, marveč tudi v bližini teh rezil, kjer so vsaj v določeni meri tudi prisotne strukturne spremembe v gradivu frezala. To, seveda v praksi pogosto pomeni, da po tovrstnih obdelavah bočnih rezil razmeroma krhko oz. bistveno manj žilavo postane tudi območje stopničastega prehoda, kjer potem še toliko bolj pride do izraza omenjeni zarezni učinek.This type of milling cutter is described in JP 03073210A, which is a cutting tool in which both areas, namely clamping and working, are cylindrical, except that the diameter of the clamping area is larger than the diameter of the working area and between the clamping and working areas is available as slightly as possible rounded stairway. Such a milling cutter is distinguished by its rigidity and, with the proper choice of the material of which it consists, and / or surface and / or thermal treatments can also be used for high-speed / so-called machining. high-speed cutting /. However, the depth of machining is always limited by the length of the working area, while machining with lateral blades at a depth greater than the length of the working area prevents the presence of a thicker clamping area. One of the possible measures in this regard is to mention the clamping of the milling cutter in such a position that the working area is located as far as possible outside the clamping device, but such a measure significantly reduces the reliability of the clamping and also the rigidity of the milling cutter, which is reflected in the possibility of vibrations and deterioration of accuracy. machining, while at a significantly less favorable loading condition in the milling cutter itself. To avoid this, tool makers offer milling cutters or even groups of milling cutters of a specific stem diameter and work area diameter with different lengths of clamping area and work area for this purpose, but purchasing and owning a complete range of milling cutters for users can be economically very burdensome. In connection with the aforementioned stepped passage, which is inevitably present in such a solution, the problem of the so-called notched effect is also pointed out, namely, the fact that in such transitions in the stressed state there is a pronounced concentration of loads, which in the case of a dynamic loading state leads to the appearance of cracks and eventually to severe mechanical damage. In particular, this problem is more acute in stem milling machines, where it is usually a complex loading condition resulting from a combination of normal loading, i.e. bending, and tangential loads i.e. torsion, therefore, in order to avoid unnecessary over-dimensioning of the supporting parts of the milling cutter, including the stem, among other things, in the case of the milling cutter, it makes sense to avoid this as much as possible. Practical experience must also be taken into account, which shows that the effects of thermal or other treatment to ensure hardness and wear resistance in the blade area can be detected not only on the blades themselves, but also in the vicinity of these blades, where they are at least to some extent structural changes in the milling material are also present. This, of course, often means in practice that after such machining of the lateral blades, they are relatively fragile. The area of the stepped passage becomes much less tough, where the notched effect then becomes even more pronounced.
US 5,807,032 opisuje steblasto frezalo, pri katerem je premer delovnega območja praktično enak premeru vpenjalnega območja. Rešitev je sicer resda osredotočena na površinsko obdelavo bočnih rezil, vendar sama zasnova frezala oz. orodja kot takega lahko predstavlja predmet diskusije v zvezi s stanjem tehnike tudi v zvezi s pričujočim izumom. V kontekstu uvodoma zastavljenega problema je namreč tovrstna izvedba frezala namreč povsem ustrezna vse dotlej, dokler ne pride do obrabe ali drugih poškodb bočnih rezil. V tem primeru je nujno ostrenje oz. brušenje, ker bi bilo sicer frezalo neuporabno in bi ga bilo potrebno zavreči. Brušenje pa neizogibno vodi do zmanjšanja premera delovnega območja, ki s tem postane manjši od premera vpenjalnega območja, obenem pa se med omenjenima območjema pojavi stopničast prehod, ki je sicer ob skrbni uporabi brusilnega sredstva lahko zaokrožen, kar pa posledice zgolj do neke mere ublaži, ni pa se jim mogoče v celoti izogniti. Tako dobljeno frezalo je pravzaprav opisano tudi v EP 0 225 052 BI. Vsako nadaljnje ostrenje bočnih rezil frezala potem pomeni zgolj še stopnjevanje tega problema, ki je bil tako v pogledu možnosti obdelave na želeni globini kot tudi v pogledu zareznega učinka že podrobno analiziran v zvezi z omenjenim JP 03073210A.US 5,807,032 describes a stem milling machine in which the diameter of the working area is substantially equal to the diameter of the clamping area. Although the solution is focused on the surface treatment of the side blades, the design of the milling cutter or the blade itself. the tool as such may be the subject of discussion regarding the state of the art also in connection with the present invention. In the context of the problem raised earlier, this type of milling cutter is perfectly appropriate as long as there is no wear or other damage to the side blades. In this case, sharpening or sharpening is necessary. grinding because otherwise the cutter would be unusable and should be discarded. Grinding inevitably leads to a reduction in the diameter of the working area, which in turn becomes smaller than the diameter of the clamping area, while at the same time a stepped passage occurs between the two areas, which, with careful use of the abrasive agent, can be rounded, which in turn only mitigates the consequences. however, they cannot be completely avoided. The milling cutter thus obtained is also described in EP 0 225 052 BI. Any further sharpening of the lateral blades of the milling cutter then only means an escalation of this problem, which has already been analyzed in detail with respect to the aforementioned JP 03073210A in terms of processing options at the desired depth and notch effect.
Nadalje je v CH 597 961 opisano steblasto frezalo, pri katerem je med delovnim območjem in vpenjalnim območjem predvideno gladko cilindrično območje. Tovrstna rešitev sicer nudi veliko možnosti kombiniranja vpenjalnih območij in delovnih območjih različnih oblik in izmer, vendar pa po drugi strani vključuje kar dva stopničasta prehoda, v katerih obstoji možnost zareznega učinka zaradi koncentracije napetosti. Kot rečeno so tovrstna orodja potem bodisi predimenzionirana ali pa primerna zgolj za manjše obremenitve, npr. za frezanje zgolj lesa ali nekaterih lahkih kovin, ki jih je lažje obdelovati.Further, CH 597 961 describes a stem milling machine which provides a smooth cylindrical area between the working area and the clamping area. Such a solution offers many possibilities for combining clamping areas and working areas of different shapes and dimensions, but on the other hand it includes as many as two stepped passages in which there is a possibility of a notched effect due to stress concentration. As said, such tools are then either oversized or only suitable for smaller loads, e.g. for milling only wood or some light metals that are easier to process.
Pričujoči izum se ukvarja s frezalom, namreč rotacijskim orodjem za izvajanje mehanske obdelave materialov z odrezavanjem. Tovrstno frezalo je predvideno za vpetje v ustrezno vpenjalno pripravo vsakokrat razpoložljivega obdelovalnega stroja, pri čemer gre še zlasti steblasto frezalo, ki obsega vpenjalno območje z določenim premerom in delovno območje s prav tako vnaprej določenim premerom. V omenjenem delovnem območju je na voljo ustrezno število po obodu enakomerno razporejenih bočnih rezil, od katerih vsako vzdolž frezala v poteka po vijačnici, na čelni površini pa so razporejena čelna rezila, ki se na obodu frezala stekajo z omenjenimi bočnimi rezili. Za tovrstno frezalo je nadalje značilno, daje premer delovnega območja večji od premera vpenjalnega območja, kar omogoča obdelavo na globini, ki presega dolžino delovnega območja.The present invention is concerned with a milling cutter, namely a rotary tool for performing mechanical treatment of materials by cutting. Such a milling cutter is intended to be engaged in a suitable clamping device of the machine tool available at all times, in particular a stem milling cutter comprising a clamping area of a certain diameter and a work area of a predetermined diameter. In the aforementioned working area, an appropriate number of circumferentially spaced side blades are available in the circumferential circumference, each of which runs along the helix along the milling cutter, and on the front surface there are arranged front blades which flow at said circumference of the milling cutter with said lateral blades. This type of milling cutter is further characterized by the fact that the diameter of the working area is larger than the diameter of the clamping area, allowing processing at a depth beyond the length of the working area.
Po izumu pa delovno območje frezala obsega vsaj v bistvu cilindričen efektivni delovni odsek in k slednjemu v smeri proti vpenjalnemu delu soosno priključen dodatni, vsaj v bistvu konusen odsek, pri čemer bočna rezila frezala potekajo preko celotnega efektivnega odseka in tudi preko vsaj pretežnega dela omenjenega dodatnega, vsaj v bistvu konusnega odseka. Premer omenjenega dodatnega odseka na njegovem proti efektivnemu odseku obrnjenem koncu ustreza premeru efektivnega odseka, premer omenjenega dodatnega območja na njegovem proti vpenjalnemu območju obrnjenem koncu pa ustreza premeru vpenjalnega območja na proti delovnemu območju obrnjenem koncu. Na tej osnovi je prehod med omenjenim dodatnim odsekom in siceršnjim efektivnim delovnim odsekom po eni strani, hkrati pa tudi prehod med omenjenim dodatnim območjem in vpenjalnim območjem po drugi strani, izveden brez stopnic in temu ustreznih zareznih učinkov. Omenjena bočna rezila lahko potekajo bodisi po celotni dolžini omenjenega dodatnega odseka ali vsaj preko polovice njegove dolžine. Pri prednostni izvedbi izuma je efektivni odsek delovnega območja cilindričen, medtem ko je dodatni omenjeni odsek delovnega območja zasnovan kot konus, namreč prisekan stožec. Nadalje so pri frezalu po izumu dopuščene široke možnosti izvedbe bočnih in čelnih rezil, ki so bodisi prekinjena ali neprekinjena, po izbiri pa tudi prevlečena vsaj z eno neodstranljivo oblogo, ki dopušča naknadno ostrenje rezil z brušenjem.According to the invention, the work area of the milling cutter comprises at least substantially cylindrical effective work section and an additional, at least substantially conical section, coaxially connected to the latter in the direction of the clamping part, the lateral blades of the milling cutter extending over the entire effective section and also through at least a substantial part of said additional workpiece. , at least essentially a tapered section. The diameter of said additional section at its end-facing portion corresponds to the diameter of the effective portion, and the diameter of said additional area at its end-facing area corresponds to the diameter of the end-facing area. On this basis, the transition between said additional section and the effective effective working section on the one hand, and at the same time the transition between said additional area and the clamping area on the other, is made without steps and corresponding notch effects. Said side blades may extend either along the entire length of said additional section or at least over half its length. In a preferred embodiment of the invention, the effective section of the working area is cylindrical, while the additional said section of the working area is designed as a cone, namely a truncated cone. Furthermore, the milling cutter according to the invention allows for wide variants of lateral and frontal blades, which are either interrupted or continuous, and optionally coated with at least one non-removable lining which permits subsequent sharpening of the blades by grinding.
Izum bo v nadaljevanju podrobneje obrazložen na osnovi primera izvedbe, ki je prikazan na priloženi skici, kjer kažejo sl. 1 frezalo po izumu v narisu; sl. 2 frezalo med uporabo;The invention will now be explained in more detail on the basis of the embodiment shown in the accompanying drawing, where FIG. 1 is a cutter according to the invention in the outline; FIG. 2 milling cutter during use;
sl. 3 frezalo med uporabo v primeru, ko globina frezanja presega dolžino efektivnega odseka delovnega območja frezala.FIG. 3 The milling cutter during use when the milling depth exceeds the length of the effective section of the milling work area.
Prikazani primer izvedbe se nanaša na steblasto frezalo, ki v osnovi sestoji iz delovnega območja 1 in vpenjalnega območja 2. Pri tem velja poudariti, da geometrijski pojmi, ki se nanašajo na obliko določenih območij, označujejo obliko zunanje konture geometrijskih rotacijskih teles, ki jih ta območja opisujejo med rotacijo okoli vzdolžne osi frezala, torej obliko, ki jo orodje ustvari med uporabo.The exemplary embodiment shown relates to a columnar milling cutter consisting essentially of a working area 1 and a clamping area 2. It should be noted that geometric terms referring to the shape of certain areas indicate the shape of the outer contour of the geometric rotating bodies, which describe the areas during the rotation about the longitudinal axis of the milling cutter, that is, the shape the tool creates during use.
Vpenjalno območje 2 frezala je v danem primeru cilindrično in gladko ter prirejeno za vpetje v ustrezno vpenjalno pripravo 3, ki je na sl. 2 in 3 shematično ponazorjena.The clamping area 2 of the milling cutter is optionally cylindrical and smooth and adapted to be clamped to the corresponding clamping device 3, which in FIG. 2 and 3 are schematically illustrated.
Delovno območje 1 frezala po izumu sestoji iz valjastega efektivnega delovnega odseka 11 in dodatnega, vsaj v bistvu konusnega odseka 12. Delovno območje 1 je kot običajno opremljeno s čelnimi rezili 13, ki so razporejena na čelni ploskvi 130 delovnega območja 1, in bočnimi rezili 14, ki so razporejena na pripadajočih vijačnicah 140, ki potekajo preko celotnega delovnega območja 1, namreč tako preko valjastega efektivnega odseka 11 kot tudi preko dodatnega vsaj v bistvu konusnega odseka 12. Omenjena vzdolžna rezila 14 so lahko bodisi neprekinjena ali prekinjena, taisto pa v splošnem lahko velja tudi za čelna rezila 13.The work area 1 of the milling cutter according to the invention consists of a cylindrical effective work section 11 and an additional, at least substantially conical section 12. The work area 1 is, as usual, provided with frontal blades 13 disposed on the front surface 130 of work area 1, and lateral blades 14 , which are arranged on the corresponding screws 140 extending over the entire working area 1, namely through the cylindrical effective section 11 and through the additional at least substantially conical section 12. Said longitudinal blades 14 may be either continuous or discontinuous, and in general may also apply to frontal blades 13.
Premer D delovnega območja 11 ustreza vsakokratnemu premeru valjastega efektivnega območja 11, in sicer tako pri novem oz. izvornem frezalu ali tudi pri rabljenem frezalu, ki je bilo že enkrat ali večkrat ponovno naostreno z brušenjem. Ta premer D je v vsakem primeru večji od premera d vpenjalnega območja 2, katerega dolžina je na sl. 1 označena z L. Med omenjenim efektivnim valjastim odsekom 11 premera D in dolžine B in vpenjalnim območjem 2 je po izumu torej predviden dodaten konusen ali vsaj v bistvu konusen odsek 12, katerega dolžina je na sl. 1 označena s C in ki omogoča blag, predvsem pa absolutno nestopničast prehod med omenjenim efektivnim delovnim območjem 11 in vpenjalnim območjem 2.The diameter D of the working area 11 corresponds to the respective diameter of the cylindrical effective area 11, both for the new or the original milling cutter, or even a used milling cutter that has been sharpened once or more by grinding. In any case, this diameter D is larger than the diameter d of the clamping region 2, the length of which is in FIG. 1 denotes L. Between said effective cylindrical section 11 of diameter D and length B and the clamping region 2, an additional tapered or at least substantially tapered section 12, the length of which in FIG. 1 is marked with a C which permits a slight, and in particular, absolutely non-step, transition between said effective working area 11 and the clamping area 2.
Omenjeni dodatni odsek 12 je tako zasnovan, da njegov manjši premer ustreza premeru d vpenjalnega območja 2, njegov večji premer pa vsakokrat razpoložljivemu premeru D valjastega odseka 11 delovnega območja 1 frezala, ki pa je v vsakem primeru večji od premera d vpenjalnega območja 2. Kot rečeno vsakokratna vijačnica 140 z bočnim rezilom 14 poteka po celotni dolžini B valjastega odseka 11, hkrati pa tudi preko vsaj pretežnega dela omenjenega dodatnega, vsaj v bistvu konusnega odseka 12.Said additional section 12 is designed such that its smaller diameter corresponds to the diameter d of the clamping area 2 and its larger diameter to the available diameter D of the cylindrical section 11 of the working area 1 of the milling cutter, which in any case is larger than the diameter d of the clamping area 2. in other words, each helix 140 with a lateral blade 14 extends along the entire length B of the cylindrical section 11, but also through at least a major portion of said additional, at least substantially conical section 12.
Zahvaljujoč tovrstni zasnovi frezala je kljub dejstvu, daje premer D med uporabo (sl. 2 in 3) aktivnega valjastega odseka 11 delovnega območja 1 večji od premera vpenjalnega območja 2, brez vsakršnih stopničastih prehodov vseskozi zagotovljena diferenca med premeroma D delovnega območja 1 in premerom d vpenjalnega območja 2 v radialni smeri, ki je smotrno še tudi po večkratnem ostrenju bočnih rezil 14 zadostna oz. vsaj tolikšna, daje s pomočjo frezala možna obdelava na globini, ki znatno presega dolžino B valjastega odseka 11, v splošnem pa dolžino (B + C) celotnega delovnega območja 1. Obdelavo na različnih globinah (sl. 2 in 3) je v praksi možno realizirati s taistim frezalom. Pri obdelavi na večji globini je sicer treba upoštevati spremembo togosti, ki pa je pri frezalu po izumu že zaradi same geometrije bistveno manj izrazita kot pri tistih po stanju tehnike, še zlasti pa so zahvaljujoč frezalu po izumu v znatni meri reducirane posledice tovrstnih sprememb, pri čemer je praktično v celoti eliminiran takoimenovani zarezni učinek.Thanks to this design of the milling cutter, despite the fact that the diameter D during use (Figs. 2 and 3) of the active cylindrical section 11 of the working area 1 is greater than the diameter of the clamping area 2, without any stair crossings, there is always a difference between the diameters D of the working area 1 and the diameter d of the clamping region 2 in the radial direction, which, even after multiple sharpening of the side blades 14, is sufficient or sufficient. at least to the extent that the milling cutter allows machining at a depth substantially exceeding the length B of the cylindrical section 11, and in general, the length (B + C) of the entire working area 1. Treatment at different depths (Figures 2 and 3) is possible in practice realized with the same milling cutter. When machining at greater depth, the change in stiffness must be taken into account, which, due to the geometry of the invention itself, is significantly less pronounced due to the geometry itself than in the prior art, and, in particular, due to the milling according to the invention, the consequences of such changes are substantially reduced. thus virtually eliminating the so-called notch effect.
Nadalje je tudi očitno, da ostrenje bočnih rezil 14 z ničemer ne posega v kontinuiteto in nosilnost frezala v vitalnih območjih, tako da se dinamične trdnostne lastnosti frezala tudi v tem primeru v celoti ohranijo. Se nadalje se ohranijo tudi razmere v kontekstu odvajanja odrezkov oz. ostružkov, ker ostrenje bočnih rezil 14 tudi v območju konusnega odseka nima nikakršnega omembe vrednega vpliva na samo geometrijo frezala izven omenjenih bočnih rezil 14.Furthermore, it is also apparent that the sharpening of the side blades 14 in no way interferes with the continuity and load-bearing capacity of the milling cutter in the vital areas, so that the dynamic strength properties of the milling cutter are also fully preserved in this case. In addition, the situation in the context of the separation of the cuts and / or sections is also maintained. because the sharpening of the side blades 14, even in the area of the conical section, does not have any significant effect on the milling geometry itself beyond the said side blades 14.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI200500075A SI21993A (en) | 2005-03-23 | 2005-03-23 | Milling tool |
| PCT/SI2006/000007 WO2006101461A1 (en) | 2005-03-23 | 2006-03-14 | Milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI200500075A SI21993A (en) | 2005-03-23 | 2005-03-23 | Milling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SI21993A true SI21993A (en) | 2006-10-31 |
Family
ID=36660144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SI200500075A SI21993A (en) | 2005-03-23 | 2005-03-23 | Milling tool |
Country Status (2)
| Country | Link |
|---|---|
| SI (1) | SI21993A (en) |
| WO (1) | WO2006101461A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ302095B6 (en) * | 2009-07-24 | 2010-10-06 | Diviš@Václav | Shank-type cutter |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2039427A (en) * | 1933-10-31 | 1936-05-05 | Kinzbach Frank | Milling cutter |
| GB753233A (en) * | 1953-10-03 | 1956-07-18 | Charles Benjamin Hoole | Improvements in rotary burrs |
| US3344497A (en) * | 1966-03-23 | 1967-10-03 | Osborne William Albert | Self-cleaning router |
| US4285618A (en) * | 1979-10-12 | 1981-08-25 | Shanley Stephen E Jr | Rotary milling cutter |
| DE8609688U1 (en) * | 1986-04-09 | 1986-09-04 | Lothar Frost Präzisionswerkzeuge Schleifmittel, 7200 Tuttlingen | Milling tool |
| JPH0453615A (en) * | 1990-06-19 | 1992-02-21 | Hitachi Tool Eng Ltd | End mill |
| US5209612A (en) * | 1992-03-27 | 1993-05-11 | The Budd Company | Cutting tool |
| US5701578A (en) * | 1996-11-20 | 1997-12-23 | Kennametal Inc. | Method for making a diamond-coated member |
-
2005
- 2005-03-23 SI SI200500075A patent/SI21993A/en not_active IP Right Cessation
-
2006
- 2006-03-14 WO PCT/SI2006/000007 patent/WO2006101461A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006101461A1 (en) | 2006-09-28 |
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| OO00 | Grant of patent |
Effective date: 20050419 |
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| KO00 | Lapse of patent |
Effective date: 20091216 |