Cassette for a milling cutter

专利摘要:
The invention relates to a cassette for a milling cutter having a cutter carrier and a clamping part, which together constitute a generally rectangular cassette, the cutter carrier and the clamping part being loosely placed on each other and together delimiting a fastening opening for a fastening screw by means of which the cassette can be fastened in a receiver of a milling cutter, the cutter carrier having a seat for a cutting insert. The invention additionally relates to a milling cutter having at least one receiver for a cassette and having at least one such cassette. A gap, S, between the cutter carrier and the clamping part is located below the cutting tip of the cutting insert to prevent chips from being lodged in the gap, S.
公开号:SE1451021A1
申请号:SE1451021
申请日:2014-09-03
公开日:2015-03-04
发明作者:Jeffrey Kovac；Armin Zimmermann；Xaver Spichtinger；Johann Schneider；Thomas Lehmann
申请人:Kennametal Inc；
IPC主号:

专利说明:

[1] [0001] The invention relates to a cassette for a milling cutter, by means of whicha cutting insert can be adjustably attached to the milling cutter. The invention additionally relates to a milling cutter having such a cassette.
[2] [0002] Such a milling cutter having a cassette is known in principle from EP 1 753 577 Bl. The cassette can be adjustably mounted in a receiveron the milling cutter by means of a fastening screw and an adjustingscrew. When the cutting insert of the cassette has become wom, the cutting insert can be remachined, or the entire cassette has to be replaced.
[3] [0003] The object of the invention consists in developing the known cassette insuch a way that the economic efficiency of the milling cutter system usedis increased.
[4] [0004] To achieve this object, there is provided according to the invention a cassette for a milling cutter, having a cutter carrier and a clamping part,which together constitute a generally rectangular cassette, the cuttercarrier and the clamping part being loosely placed on each other andtogether delimiting a fastening opening for a fastening screw by means ofwhich the cassette can be fastened in a receiver of a milling cutter, thecutter carrier having a seat for a cutting insert. The invention is based onthe fundamental concept of dividing the hitherto known cassette into twoparts that are placed loosely on each other, of which one carries the cutting insert and the other effects clamping and support. Both parts
[5] [0005]
[6] [0006]
[7] [0007]
[8] [0008]
[9] [0009]
[10] [00010]
[11] [00011] together, as a Whole, constitute the cassette, which, in respect of itsdimensions, corresponds to the hitherto known cassette. Consequentlythe cassettes used hitherto can be replaced by the new cassettes. Theparticular advantage of the new, divided cassettes consists in that, in thecase of wear, only a part of the cassette need be replaced, namely thecutter carrier, while the other part, i.e. the clamping part, can continue tobe used. As a result, the operating costs are reduced.
[12] [00012]
[13] [00013]
[14] [00014] support portion, and that is supported on the cutter carrier in the region ofthe seat, or close to the latter. The clamping surface can be used, on theone hand, to transfer the exerted clamping force on to the cutter carrier.If a separate cutting insert, inserted in the seat, is used, the clampingsurface can be used, on the other hand, to clamp the cutting insert in theseat.
[15] [00015]
[16] [00016]
[17] [00017][00018][00019][00020][00021][00022] The invention is described in the following on the basis of variousembodiments, which are represented in the appended drawings. In thedrawings: Figure l shows a schematic bottom view of a milling cutter according tothe invention, having cassettes according to the invention; Figure 2 shows the milling cutter from Figure l, in a side view; Figure 3 shows the milling cutter from Figure l, in a perspective view;Figure 4 shows a side view of a cassette according to the invention;Figure 5 shows a top view of the cassette from Figure 4; Figure 6 shows a front view of the cassette from Figure 4; Figure 7 shows a first perspective view of a cassette according to a first embodiment of the invention;
[23] [00023]
[24] [00024]
[25] [00025]
[26] [00026]
[27] [00027]
[28] [00028]
[29] [00029]
[30] [00030][00031] Figure 8 shows a second perspective view of the cassette according to thefirst enibodinient; Figure 9 shows the cutter carrier of the cassette according to the firstenibodinient, in a perspective view; Figure 10 shows the clan1ping part of the cassette according to the firstenibodinient, in a perspective view; Figure 11 shows a perspective view of a cassette according to a secondenibodinient; Figure 12 shows a perspective view of a cassette according to a thirdenibodinient; Figure 13 shows a broken top view of a cutter carrier with a cutting insertfor a cassette, according to a fourth enibodinient; Figure 14 shows a side view of a cassette according to a fourthenibodinient; Figure 15 shows a top view of the cassette froni Figure 14; and Figure 16 shows a front view of the cassette from Figure 14.
[32] [00032]
[33] [00033] Figures 1 to 3 show a n1illing cutter 1, which has a tool basic body 2having the general shape of a cylinder, or hollow cylinder. The toolbasic body can be con1posed of aluniinuni, titaniuni, steel or anothersuitable material. On its lateral circun1ferential surface 3, the tool basicbody 2 carries a niultiplicity of cassettes 4, which are disposed in auniforrnly distributed manner on the outer circuniference of the tool basicbody 2. Alternatively, it is possible for the cassettes 4 to be disposedwith an irregular spacing on the outer circuniference of the tool basicbody 2. Provided between the cassettes 4 in the tool basic body 2, in theregion of the circun1ferential surface 3, there are chip guide flutes 6. Thelatter directly adjoin chip guide surfaces 7, which are integrated into eachcassette 4.
[34] [00034]
[35] [00035]
[36] [00036]
[37] [00037]
[38] [00038]
[39] [00039]
[40] [00040] In respect of further details of the mounting of the cassettes 4 and theiradjustment on the milling cutter 1, reference is made to EP 1 753 577.Figures 4 to 10 show a first embodiment of the cassettes 4. Each cassetteconsists of a cutter carrier 40 and a clamping part 70, which are realizedas discrete, separate components and, when put together, result in thegenerally rectangular cassette (see Figure 4), through which there extendsa fastening opening 72.
[41] [00041]
[42] [00042]
[43] [00043]
[44] [00044]
[45] [00045] Furthermore, in the clamping part 70, the "rest" of the fastening opening72 is provided in the forrn of a recess.
[46] [00046]
[47] [00047]
[48] [00048]
[49] [00049]
[50] [00050] Figure 12 shows a third embodiment, Which differs from the secondembodiment in the disposition of the coolant channel 80. In the case ofthe third embodiment, the coolant channel 80 terrninates on a side surfaceof the cassette 4, such that the coolant can be directed to the cutting insert42 or, more precisely, to the cutting edge thereof, via a coolant supplyopening provided on the bottom of the receiver 21 in the milling cutter 1.Figure 13 shows a fourth embodiment, Which differs from the first threeembodiments in respect of the cutting insert 42. In the case of the fourthembodiment, the cutting insert 42 is not fixedly soldered-in, but isrealized as an indexable cutting insert, Which is inserted in the seat 44.There, it is fixed by means of the clamping action exerted by theclamping part 70 and, in particular, by the clamping surface 74 thereof.In addition, the cutting insert 42 is locked positively in the seat 44. Forthis purpose, retaining proj ections 50 are provided on the seat, Whichprojections engage in appropriate recesses 52 on the cutting insert 42.
In the case of the fourth embodiment, likeWise, coolant channels can beprovided in the clamping part 70.
Figures 14 to 16 shoW a f1fth embodiment, Which differs from the firstfour embodiments in respect to the relative location of the gap, S,between the cutter carrier 40 and the clamping part 70, and the cutting tip82 of the cutting insert 42. In particular, the gap, S, is located beloW thecutting tip 82 of the cutting insert 42 as shown in Figures 14 and 16. Asa result, chips forrned during a cutting operation are prevented frombeing lodged Within the gap, S.

权利要求:
Claims (3)
[1] 1. A cassette for a milling cutter, having a cutter carrier and a clamping part, Which together constitute a generally rectangular cassette, the cutter carrier and theclamping part being loosely placed on each other and together delimiting a fasteningopening for a fastening screw by means of which the cassette can be fastened in areceiver of a milling cutter, the cutter carrier having a seat for a cutting insert havinga cutting tip, wherein a gap, S, between the cutter carrier and the clamping part islocated below a cutting tip of the cutting insert. . The cassette as claimed in claim 1, wherein the cutting insert is fixedly mounted on the cutter carrier. . The cassette as claimed in claim 1, wherein the cutting insert is inserted in the seat on the cutter carrier. . The cassette as claimed in claim 3, wherein the cutting insert is locked positively in the seat against displacement in at least one direction. . The cassette as claimed in claim 1, wherein the clamping part has a support portion, which def1nes an outside face of the cassette that faces away from the seat for thecutting insert. . The cassette as claimed in claim 5, wherein the support portion terrninates just above the bottom surface of the cutter carrier. . The cassette as claimed in claim 1, wherein the parting line between the cutter carrier and the clamping part, in relation to a center line of the fastening opening, runs closerto the clamping part than to the cutter carrier. . The cassette as claimed in claim 1, wherein the clamping part has a clamping surface that is located at the end of the clamping part facing away from the support portion,and that is supported on the cutter carrier in the region of the seat, or close to thelatter. 10. 11. 1
[2] 2. 1
[3] 3. The cassette as claimed in claim 1, Wherein there is a slot between the cutter carrierand the clamping part, Which slot extends, starting from the clamping surface beyond the region of the fastening opening to the support portion. The cassette as claimed in claim 1, Wherein at least one coolant channel is provided in the clamping part. The cassette as claimed in claim 10, Wherein the coolant channel extends from aside surface of the clamping part to an outer surface of the clamping part that is disposed above the seat for the cutting insert. The cassette as claimed in claim 10, Wherein the coolant channel extends from a topside of the clamping part to an outer surface of the clamping part that is disposed above the seat for the cutting insert. A milling cutter having at least one receiver for a cassette and having at least one cassette according to claim 1.

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同族专利:

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公开号 | 公开日

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CN104416211A|2015-03-18|

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DE102014111637A1|2015-03-05|

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KR20150026885A|2015-03-11|

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JP2015047693A|2015-03-16|

引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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DE202004008642U1|2004-05-27|2005-09-29|Kennametal Inc.|milling tool|

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DE102012009739A1|2012-05-16|2013-11-21|Kennametal Inc.|Cassette for a router|CN108115187A|2016-11-28|2018-06-05|天津金源滕博财务咨询有限公司|A kind of cutter blade fixing device|

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EP3603862A4|2017-03-24|2020-12-23|Sumitomo Electric Hardmetal Corp.|Milling tool|

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JP6621044B1|2018-05-15|2019-12-18|住友電工ハードメタル株式会社|Cutting inserts and milling tools|

法律状态:
2015-09-22| NAV| Patent application has lapsed|

优先权:

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申请号 | 申请日 | 专利标题

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US14/016,267|US20140003872A1|2012-05-16|2013-09-03|Cassette for a milling cutter|

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