1、UDC 621.951.452-229.2-034.018.25 621.914.22-229.2-034.018.25 di h6 2 3 4 5 6 8 10 1, +; 28 36 40 DEUTSCHE NORM 12 14 16 1 18 20 25 32 45 48 50 56 60 February 1992 DIN Parallel shanks for hardmetal twist drills and end mills - 6535 Dimensions Zylinderschfte fr Spiralbohrer und Schaftfrser aus Hartmet
2、all; Mae In keeping with current practice in standards published by the International Organization for Standardization (ISO), a comma has been used throughout as the decimal marker. Dimensions in mm 1 Scope and field of application This standard specifies the dimensions of parallel shanks for hardme
3、tal twist drills and end mills. Such shanks are also made of hardmetal or steel and are brazed to the cutting parts. Specifications for shanks material and design are given in the relevant tool standards. 2 Dimensions and designation Details left unspecified are to be selected as appropriate. 2.1 Ty
4、pe HA, with plain parallel shank Without centre hoiel) b Chamfer Y- Figure i. Designation of a plain parallel shank (HA) with a diameter, dl, of 12 mm: Parallel shank DIN 6535 - HA12 1) Brazed steel shanks may be provided with a type R or A centre hole as specified in DIN 332 Part 1 (at manufacturer
5、s discretion). Continued on pages 2 and 4 Beuth Verlag GmbH, Berlin. has the exclusive right of sale for German Standards (DIN-Normen). DIN 6535 Enol. Price aram 05.93 - -. Sales No.0106 Page 2 DIN 6535 e1 c 7 I 4 4 G 11 2.2 Type HB, with flatted parallel shank (single-flatted shank, for dl = 6 to 2
6、0 mm) Without centre holei) Chamfer 20 11 25 18,2 50 25 12 32 23,O 56 32 14 36 30,O 60 (double-flatted shank, for dl = 25 and 32 mm) 17 19 Other dimensions and data as for -.- Chamfer Figure 2. Figure 3. Designation of a single-flatted shank (HB) with a diameter, di, of 12 mm: Parallel shank DIN 653
7、5 - HB12 Table 2. For l), see page 1. DIN 6535 Page 3 2.3 Type HE, with sloping clamping face, without grooves For di = 6 to 20 4 - II - Figure 4. For dl = 25 and 32 rnm Chamfer -7 and data as for / Figure 5. -4 Designation of a parallel shank with sloping clamping face (HE) with a diameter, di, of
8、12 mm: Parallel shank DIN 6535 - HE12 Table 3. 32 9.9 60 48 35 3 Design Parallel shanks may be designed with or without groove(s). Details can be found in the relevant dimensional standards. For i), see page 1. Page 4 DIN 6535 Ytandards referred to DIN 332 Part 1 60 centre holes; types R, A, B, and
9、C Other relevant standards DIN 6527 Solid hardmetal end mills with stepped parallel shank; dimensions DIN 6528 Solid hardmetal end mills with continuous parallel shank; dimensions DIN 6537 (at present at the stage of draft) Hardmetal twist drills with stepped parallel shank; dimensions DIN 6538 (at
10、present at the stage of draft) Twist drills with hardmetal cutting edges with reinforced parallel shank; dimensions DIN 6539 Continuous parallel shank solid hardmetal twist drills; dimensions DIN 6540 Part 1 (at present at the stage of draft) Technical delivery conditions for DIN 6537 and DIN 6539 s
11、olid hardmetal twist drills; requirements DIN 6540 Pari 2 (at present at the stage of draft) Technical delivery conditions for DIN 6537 and DIN 6539 solid hardmetal twist drills; testing Explanatory notes This standard has been prepared to meet the increasing demand for standardized solid hardmetal
12、tools. The specifications given for parallel shanks deviate from those for DIN 1835 high-speed steel milling cutters in the following points. a) The range of diameters dl has been extended to include diameters of 14 mm and 18 mm. b) For plain shanks, tolerance h6 has been specified instead of h8. c)
13、 Flatted shanks may also be designed to have grooves. d) The depth of the flat or of the clamping face is smaller, so as to provide stability and so that the shanks can be provided with grooves. e) For type HE shanks, the shank end has been given a cylindrical form for dl from 6 mm to 20 mm. International Patent classification B 23 B 51/00 B 23 C 5/10 B 28 D 1/14 B 28 D 1/18 B 27 G 13/14 B 27 G 15/00
