1、ICS 25.100.20Walzenstirnfrser mit Quernut und Lngsnut Teil 2: TechnischeLieferbedingungenIn keeping with current practice in standards published by the International Organization for Standardization(ISO), a comma has been used throughout as the decimal marker.Ref. No. DIN 1880-2 : 2003-09English pri
2、ce group 08 Sales No. 010805.04DEUTSCHE NORM September 20031880-2Continued on pages 2 to 7. No part of this translation may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e.V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German
3、 Standards (DIN-Normen).Shell end mills with tenon and key drivePart 2: Technical delivery conditionsTranslation by DIN-Sprachendienst.In case of doubt, the German-language original should be consulted as the authoritative text.SupersedesMay 1995 edition.ForewordThis standard has been prepared by Te
4、chnical Committee Frswerkzeuge mit unlsbaren Schneiden of theNormenausschuss Werkzeuge und Spannzeuge (Tools and Clamping Devices Standards Committee).The geometrical tolerances established in this standard are the results of extensive measurements carriedout on milling cutters taken from current pr
5、oduction.AmendmentsThis standard differs from the May 1995 edition in that it has been editorially revised and hardness detailsfor alloy group HSS-E have been corrected.Previous editionsDIN 883: 1943-07; DIN 1880: 1955-08, 1976-08; DIN 1880-2: 1981-06, 1981-12, 1990-04, 1995-05.All dimensions are in
6、 millimetres.1 ScopeThis standard specifies technical delivery conditions for shell end mills with tenon and key drive (end mills,for short) as specified in DIN 1880-1.For end mills not covered in this standard (e.g. end mills to be produced to specified drawings), theapplication of one or more of t
7、he delivery conditions specified here may be the subject of agreement.2 Normative referencesThis standard incorporates, by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the titles of the publications are
8、listed below. For dated references, subsequent amendments to or revisions of any of these publicationsapply to this standard only when incorporated in it by amendment or revision. For undated references, thelatest edition of the publication referred to applies.DIN 138 Metal-cutting tools Bores, keyw
9、ays and driving features for tools with parallel bore and with1:30 taper boreDIN 1836 Cutting tool application groupsDIN 1880-1 Shell end mills with tenon and key drive DimensionsDIN 4000-22 Tabular layouts of article characteristics for cutting tools with a specified cutting edgegeometryDIN 6581 Co
10、ncepts associated with chip removal Reference systems and angles on the cuttingportion of toolsDIN 50150 Testing of steel and cast steel Conversion table for Vickers hardness, Brinell hardness,Rockwell hardness and tensile strengthPage 2DIN 1880-2 : 2003-09End mill DIN 1880 63 N HSSName and DIN numb
11、erCutter diameter, d1Tool application groupMaterial (alloy group)DIN EN ISO 4957 Tool steels (ISO 4957:1999)ISO 1101 : 1983 Technical drawings Geometrical tolerancing Tolerancing of form, orientation, locationand run-out Generalities, definitions, symbols and indications on drawings3 Quantities and
12、symbolsb1cutter widthd1cutter diameterd1Mdiameter in gauge plane Md1Ndiameter in gauge plane Ndmdiameter of circle on which measurement of axial run-out of bearing surface is basedm distance between gauge planes and mill end facesRz maximum height of profiletptolerance on axial run-out of minor cutt
13、ing edgestrtolerance on radial run-out of major cutting edgesz number of cutting edgesaqoorthogonal clearance of minor cutting edgesapback clearance of major cutting edgesgqoorthogonal rake of minor cutting edgesgpback rake of major cutting edges21dmean difference of diameters d1Mand d1Nmax21dmaximu
14、m mean difference of diameters d1Mand d1Nlscutting edge inclination4 DesignationThe standard designation of end mills shall give, in the following order:a) name and DIN number, followed by a dash;b) cutter diameter, d1, in mm;c) symbol to denote cutting direction and hand of helix, followed by a das
15、h (only for non-standard designs;cf. subclause 7.3);d) symbol(s) to denote tool application group (cf. subclause 7.1), followed by a dash;e) symbol Z and number of cutting edges (only to be given if end mill is to be supplied with a specifiednumber of cutting edges; cf. subclause 7.5), separated by
16、a dash fromf) symbol HSS or HSS-E, to indicate material (alloy group) of cutting part.EXAMPLE 1:EXAMPLE 2:End mill DIN 1880 63 LL NR Z10 HSSName and DIN numberCutter diameter, d1Cutting direction and hand of helix(left-hand cutting, left-hand helix)Tool application groupNumber of cutting edgesMateri
17、al (alloy group)Page 3DIN 1880-2 : 2003-09NOTE 1: To illustrate their proper sequence, all characteristics listed in clause 4 have been included in thedesignation. Such a large number of characteristics deviating from the standard design will, however, notbe required in practice.NOTE 2: The DIN 4000
18、-22 tabular layout of article characteristics (No. 4) applies to end mills as covered here.5 Dimensions and tolerances5.1 Dimensions and dimensional tolerancesThe end mill dimensions shall be as specified in DIN 1880-1 and DIN 138.5.2 Geometrical tolerances5.2.1 RequirementsEnd mills shall be produc
19、ed to the dimensions and tolerances specified in table 1 (cf. figure 1 for notation).Tolerance tprelates to a circle with a diameter equal to 0,9 d1, tolerance trto a circle with diameter d1Mor d1N,and the tolerance on the axial run-out of the cutter bearing surface applies to a circle of diameter d
20、m.NOTE 1: See ISO 1101 for definition of geometrical tolerances.22111NMddd=relates to planes M and N (cf. figure 1).The following condition shall be satisfied:02211dd maxi.e., diameter d1Mshall not be smaller than diameter d1N(or, in other words, the cutting part may only tapertowards the shank).NOT
21、E 2: Checking of 21dhas been substituted for verification of the cylindricity tolerance as the latter involvescomplex procedures.Figure 1: End mill dimensions (notation)Page 4DIN 1880-2 : 2003-09Table 1: Geometrical tolerances (cf. figure 1)5.2.2 Checking of run-outChecking of run-out shall be carri
22、ed out with the end mill fitted on a mandrel held between two cone points,as shown in figure 2. The mandrel shall have a maximum radial run-out relative to its axis of 0,003 mm (cf.figure 3).Figure 2: Arrangement for checking run-out of end millFigure 3: Arrangement for checking run-out of mandreltr
23、2), 4)max21d3)d1dmm tp1),4)for tool application groups for tool application groups+10N, H, and WNF, NR, HF, and HR N, H, and WNF, NR, HF, and HR 40 27 3,5 50 35 0,025 0,039 0,039 63 4 80 45 0,030 0,046 0,046 100 50 4,5 0,035 0,054 0,054 0,025 0,039 125 65 160 85 5 0,040 0,063 0,063 0,030 0,046 1)tpc
24、orresponds to IT 7 for d1. 2)trcorresponds to IT 8 for d1. 3)max21dfor tool application groups N, H, and W corresponds to IT 7 for b1, and for tool application groups NF, NR, HF, and HR, to IT 8 for b1. 4)For two neighbouring cutting edges, the tolerance on radial run-out shall be equal to 0,33 tran
25、d that on axial run-out, equal to 0,33 tp. Page 5DIN 1880-2 : 2003-096 Material and hardness6.1 MaterialThe cutting part of end mills shall be made of high-speed steel as specified in DIN EN ISO 4957. The steel grade,which is to comply with table 2, shall be at the manufacturers discretion or be sub
26、ject to agreement. In the lattercase, material designation or material number of the steel shall be indicated when ordering.The alloy group required, HSS or HSS-E, shall be indicated in the designation.Table 2: MaterialAlloy group Cobalt or vanadium content Steel gradeHSSLess than 4,5 % of cobalt S
27、6-5-2, or similar gradeand 2,6 % of vanadiumHSS-ENot less than 4,5 % of cobalt S 6-5-2-5, S 10-4-3-10,or 2,6 % of vanadium or similar grade6.2 Hardness of cutting partWhere the cutting edges are of group HSS alloy, their hardness shall be 64 +2/0 HRC or 850 +70/0 HV, and65 +2/0 or 885 +70/0 HV when
28、of group HSS-E alloy.For Vickers hardness testing, the minimum proof load shall be 5 kg.NOTE: DIN 50150 should not be used to convert Rockwell hardness into Vickers hardness since the standarddoes not cover high-speed steel.7 Design7.1 Tool application groupEnd mills shall comply with the specificat
29、ions of DIN 1836 for tool application group N, NF, NR, H, HF, HR or W.7.2 BoreThe bore with tenon and key drive shall comply with DIN 138.7.3 Cutting direction and hand of helixThe standard cutting direction of end mills shall be to the right, with a right-hand helix. If end mills are to havea left-
30、hand helix, this shall be indicated in the designation by symbol LL.7.4 Surfaces7.4.1 Surface roughnessThe cutting edge flanks shall have a maximum height of the profile, Rz, as given in table 3.Table 3: Surface roughness (values given in m)Type of surfaceMaximum heightof profile, RzMajor cutting ed
31、ge face 10Major cutting edge flankGroups N, H, and W 6,3Groups NF, NR, HF, and HR 10Minor cutting edge flank 107.4.2 Surface finishThe method of surface treatment (e.g nitriding) is at the manufacturers discretion or subject to agreement.7.5 Number of cutting edges and tool anglesThe number of cutti
32、ng edges, z, and the tool angles shall be as specified in tables 4 and 5 (cf. figure 4). Withinthe ranges given, z is at the manufacturers discretion. Where an end mill is to have a given number of cuttingedges, this shall be indicated in the designation by symbol Z.Page 6DIN 1880-2 : 2003-09The hel
33、ix shall be manufactured to tolerance js 15, the pitch being selected on the basis of the preferred numberseries R 20.NOTE: For end mills of tool application groups HF, HR, NF and NR, apis produced by relieving.Figure 4: Cutting facesTable 4: Number of cutting edgesNumber of cutting edges, z, for to
34、ol application groupsd1N, NF, NR, HF,HWand HR4016 to 1810 to 125012 to 144 to 166318 to 1080 14 to 166 to 18100 10 to 12 18 to 20125 12 to 14 20 to 228 to 10160 14 to 16 22 to 24Table 5: Tool anglesTool applicationaqoapgqogplsgroupN 10 to 16NF 5 to 712 to 1818 to 12 10 to 15 25 to 32NRH 4 to 6 18 to
35、 15 18 to 10 15 to 18 15 to 22W 6 to 8 16 to 12 10 to 15 22 to 28 30 to 40HF, HR 4 to 6 12 to 18 18 to 10 15 to 18 25 to 32Page 7DIN 1880-2 : 2003-098 MarkingEnd mills shall be marked with the following details:a) diameter, d1;b) tool application group;c) pitch of helix, in mm;d) alloy group (HSS or
36、 HSS-E);e) manufacturers name or symbol.Any additional marking shall be at the manufacturers discretion or the subject of agreement (as shall markingto be used instead of that specified here).The marking shall remain visibile when the tool is packed. It may be embossed, etched or applied electrically,but shall not interfere with clamping nor adversely affect tool performance.
