1、High-speed steel broaching tools Technical delivery conditions ICs 25.1 00.30 DIN 1409 - Supersedes July 1997 edition Rumwerkzeug aus Schnellarbeitsstahl - Technische Lieferbedingungen In keeping with current practice in standards published by the International Organization for Standardization (ISO)
2、, a comma has been used throughout as the decimal marker. Foreword This standard has been prepared by Technical Committee Raumwerkzeuge of the Normenausschuss Werkzeuge und Spannzeuge (Tools and Clamping Devices Standards Committee). Amendments This standard differs form the July 1997 edition in tha
3、t some figures have been modified and some marking details have been amended. Previous edition DIN 1409: 1997-07. All dimensions are in millimetres. 1 Scope This standard specifies dimensions and other requirements for high-speed steel broaching tools for accept- ance purposes. 2 Normative reference
4、s This standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and titles of the publications are listed below. For dated references, subsequent amendments to or revisions of any of these pub
5、lications apply to this standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. DIN 332-1 DIN 141 5-1 DIN 141 6 Centre holes - Indications on drawings Broaching tools - Classification, nomenclature and designs
6、 Broaching tools - Design of teeth and chip spaces Continued on pages 2 to 7. Translation by DIN-Sprachendienst. In case of doubt, the German-language original should be consulted as the authoritative text. Q No pari of this translation may be reproduced without the prior permission of DIN Deutsches
7、 Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, hac the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN 1409 : 2000-07 Sales No. 0108 12.00 English price group 08 Page 2 DIN 1409 : 2000-07 DIN 1417-1 DIN 1417-2 DIN 1417-3 DIN 1417-4 DIN 1417-5 DI
8、N 1417-6 DIN EN IS0 4287 Broaching tools - Types J and K round shanks with inclined driving plane Broaching tools -Types L and M round tail ends Broaching tools - Type N rectangular shank with inclined driving plane (not for internal splines) Broaching tools -Type P rectangular tail ends (not for in
9、ternal splines) Broaching tools -Type R rectangular shanks with inclined driving plane (for internal splines) Broaching tools - Type S rectangular tail ends (for internal splines) GPS - Surface texture: Profile method -Terms, definitions and surface texture parameters (IS0 4287 : 1997) 3 Acceptance
10、inspection Acceptance inspection of broaching tools shall be based on this standard. Tools may be rejected in the case of non-compliance. 4 Material and hardness 4.1 Material Broaching tools shall be made of high-speed steel, the grade being subject to agreement or at the manufacturers discretion. 4
11、.2 Hardness Broaching tools shall conform to the hardness requirements given in the figures below. 5 Workmanship Broaching tools shall be free from all surface irregularities resulting from manufacturing or improper handling (e.g. deformation, surface discontinuities, abrasive residues, chatter mark
12、s, scratches, flash, alterations to material structure due to localized overheating during grinding). Tail ends (cf. DIN 141 7-2 to DIN 141 7-4, and DIN 141 7-6) shall not be provided with guiding (locating) marks. 6 Requirements 6.1 Toothing characteristics 6.1.1 Form of teeth The form of teeth and
13、 chip spaces (tooth gullets) shall be as specified in DIN 141 6. 6.1.2 Face angle The face angle, y, for flat (.e. square or rectangular) broaches is subject to limit deviations of I1 O, and that for round broaches to limit deviations of I2“. Figure 1: Tooth dimensions (notation) Particular attentio
14、n shall be paid to the radii at the transition between the gullet and the root radius (cf. figure 1). 6.1.3 Backoff angle The backoff angle, a, shall be subject to the limit deviations specified in table 1. Page 3 DIN 1409 : 2000-07 0,03 Table 1 0,03 1/3 x h 0,05 0,Ol 111 Backoff angle, a Limit devi
15、ations 0,05 I 1“ 1/5 x h +30 -30 2“ 3: 6.1.4 Width of land on the flank The width of land on the flank, b, shall be subject to limit deviations of I0,2 mm. 6.1.5 Cutting teeth The tolerance on the rise per tooth, h (cf. DIN 141 5-1) shall be as specified in table 2 (with h measured on the tooth circ
16、umference in the case of internal broaches). Table 2 Tooth rise, h To I eran ce 6.1.6 Spare teeth The permissible differences in cutting edge radii between spare teeth shall be 0,005 mm (this being measured on the tool circumference in the case of internal broaches). 6.2 Centre holes Centre holes sh
17、all be of type B (or C ) as in DIN 332-1 and shall show no discontinuities. Centre holes with a diameter of 2 mm or greater shall be ground. 6.3 Surface roughness The surface roughness shall be as shown in figure 2. 6.3.1 Toothing Figure 2: Surface roughness of teeth The surface roughness of the lan
18、d, Rzi), of internal broaches (e.g. keyway broaches) shall be 2,5 pm. I) Maximum height of the profile, as defined in DIN EN IS0 4287. Page 4 DIN 1409 : 2000-07 6.3.2 Internal broaches a Applies to pull broaches. Applies to push broaches. Figure3: Broach with shank for chuck with four pulling pins a
19、nd tail ends a Locating face Figure 4: Shank for chuck with two pulling pins Figure 5: Screwed-on shankltail end 6.3.3 External broaches n 1 End face 2 Bearing face 3 Locating face a Direction of broach travel L 2 Figure 6: Surface roughness of external broaches Page 5 DIN 1409 : 2000-07 Overall len
20、gth of broach 6.4 Steady spot (broach location flat) For tolerances, see subclause 6.5.2. Over 400 630 1 O00 1 600 2 500 up to 400 630 1 O00 1 600 2 500 b 10 a This dimension exists only where the tool profile (.e. the tool diameter) along the tool axis is at no point smaller than the depth of the g
21、ullet. Steady spot Transition to be radiused Tool diameter at steady spot Figure 7: Gullet design 10 0,06 0,12 0,16 25 0,03 0,06 0,06 0,12 0,14 6.5 Form tolerances 6.5.1 Before checking broaches for compliance with the tolerances on radial runout specified in figures 8 to 1 O, their straightness sha
22、ll be checked, with the broach unsupported, for compliance with the values specified in table 3. If they do not comply, broaches shall be straightened. Straightness tolerances for internal broaches 25 I 63 I 0,02 Table 3 0,03 I 0,03 I 0,06 1 0,08 I 0,12 63 1 O0 250 1 O0 0,03 0,03 0,04 0,08 0,lO 250
23、0,03 0,04 0,08 0,l o 0,03 0,04 0,08 0,lO 6.5.2 Radial runout tolerances shall be checked afterthe broach has been used, with the broach still fitted in the chuck and the workpiece in broaching position. If required, broaches shall be straightened beforehand (see sub- clause 6.5.1). Radial runout tol
24、erances for one-piece internal broaches (standard design) Page 6 DIN 1409 : 2000-07 1 Shank 2 Front pilot 3 Tail end a For pressure angles smaller than 37“30 For pressure angles of 37“30 or greater Steady spot d Roughing teeth e Finishing teeth Spare teeth Figure 8: Radial runout tolerances for sing
25、le-piece broaches 1 Y mp 2 a 1 Centre hole 2 Front pilot a Steady spot Figure 9: Radial runout tolerances for broaches with screwed-on shanks/tail ends 1 1 Tail end face a Steady spot Figure 1 O: Radial runout tolerances for push broaches Page 7 DIN 1409 : 2000-07 6.5.3 External broaches shall be ma
26、nufactured to the perpendicularity tolerances shown in figure 1 1. Perpendicularity tolerances for external broaches -a End face Bearing face Locating face Direction of broach travel Figure 1 1 : Perpendicularity tolerances for external broaches Marking Broaches shall be legibly and permanently mark
27、ed with the following information. 7.1 Mandatory marking: a) manufacturers or suppliers trademark; b) steel grade; c) manufacturers order number. 7.2 Optional marking: a) date of manufacture; b) customers order number; c) customers tool code. Other marking details shall be agreed. 8 Packaging Broach
28、es shall be lubricated by means of a suitable broaching oil and packaged so that they are protected against damage in transit. Broaches supplied in a common container shall be packaged individually. Containers shall bear the following information: a) manufacturers trademark; b) customers and supplie
29、rs order numbers; c) mass of tool. Other relevant standards DIN 17350 IS0 11 O1 : 1983 IS0 1302 : 1992 Tool steel - Technical delivery conditions Technical drawings - Geometrical tolerancing - Tolerancing of form, orientation, location and runout - Generalities, definitions, symbols, indications on drawings Technical drawings - Method of indicating surface texture
