1、UDC 621.934.023-034.14 : 674.053 DEUTSCHE NORMEN Auaust 197 Circular Saw Blades of Tool Steel for Woodworking - DIN - 8809 Kreissgebltter fr Holz aus Werkzeugstahl For connection with the International Standard IS0 2935-1 974, published by the International Organization for Standardization (ISO), se
2、e Explanations. Dimensions in mm Figure 1. Designation of a circular saw blade for woodworking of diameter d, = 315 mm, thickness s = 1.6 mm, drill hole d, = 30 mm, of alloyed tool steel (SP): Saw blade 315 X 1.6 X 30 DIN 8809 -SP Table 1. Main dimensions Avoid sizes in brackets where possible. (355
3、) Continued on page 2 Explanations on page 3 DIN 8809 engl. Preisgr. 4 lesale rights of German Standards (DIN-Normen) are witheuth Verlag GmbH. Berlin30and Kln 1 Verir.-Nr. O104 12.80 Page 2 DIN 8809 Material: According to the technical conditions of delivery in DIN 5134 Part 4 and according to the
4、safety requirements in DIN 8085 Construction: Normal construction of the mounting as in Fig. 1 (without keyways or registration hole) Circular saw blades for multi-blade circular sawing machines driven by featherkeys according to DIN 6885 Part 1 are made with two featherkeyways (M) as in Fig. 2 and
5、Table 2. The designation for, e. g., a circular saw blade for woodworking of diameter d, = 31 5 mm, thickness s = 1.6 mm, drill holed, = 30 mm, with two featherkeyways (M), surface ground (pi), of alloyed tool steel (SP) is then: Saw blade 315 X 1.6 X 30 M pl DIN 8809 -SP Circular saw blades with a
6、registration hole (J) as in Fig. 3 and Table 3 are made for regrinding on saw-sharpen- ing machines with index wheels (e. g. in the case of grouped tooth patterns, scoring saws and other high- accuracy saws). In the case of new circular saw blades which have not yet been reground, the centre point o
7、f the registration hole should be on a connecting line between the centre point of the saw blade and a tooth tip. The designation for, e. g., a circular saw blade for woodworking of diameter d, = 31 5 mm, thickness s = 1.6 mm, drill hole d, = 30 mm, with registration hole (J), of alloyed tool steel
8、SPI is then: Saw blade 315 X 1.6 X 30 J DIN 8809 - SP Shape of base of keyway at The base of the keyway should, if necessary, be machined in order to avoid any risk of cracking through notch effect. I manufacturers discretion. Table 2. Constuction M with featherkevwavs Featherkey according 1 :l 1 :
9、A f;5 1 +! I to DINb;yPart 1 1 30 38.6 19,3 8X 7 I 40 I 48.6 I 24.3 I 13 I 12x 8 I , -. , . , 60 I 71 I 355 I 19 I 18X 11 5 I 98 I 49 I 23 I 22x14 Table 3. Construction J with registration hole 1 I H:l I I dl I +0,2 a I I 100to 160 I 21 6 Other constructions according to the technical conditions of
10、delivery DIN 5134 Part 4. Marking: According to the technical conditions of delivery DIN 5134 Part 4 Further Standards DIN 5134 Part 4 Saw blades for woodworking; technical conditions of delivery for circular saw blades of tool steel DIN 8083 Carbide-tipped circular saw blades for wood-working DIN 8
11、085 Machine tools for machining wood, plastics and similar materials; safety requirements DIN 8085 Supplement Machine tools for machining wood, plastics and similar materials; safety requirements, usual materials DIN 8809 Page 3 Explanations This Standard agrees in part with the International Standa
12、rd IS0 2935-1974, published by the International Organization for Standardization (ISO) : E: Circular saw blades for woodworking - Dimensions F: Lames de scies circulaires bois - Dimensions Obtainable from DIN Deutsches Institut fr Normung e. V. (German Institute for Standardization), Berlin. The fo
13、llowing circular saw blade sizes included in IS0 2935-1974 have not been adopted by DIN 8809, as there is no demand for them. 225 2,5 280 1,2 560 900 ml 1600 1600 2000 On the other hand, as additional to IS0 2935-1974, the drill holed, = 30 mm has been included ford, = 140 mm and 160 mm, d, = 85 mm ford, = 250 mm to 400 mm and d, = 60 mm ford, = 450 mm, thereby simplifying the assembly into sets. A further attempt will be made at a later date to reach agreement on the standardization of tooth shapes and number of teeth.
