DIN 6888-1956 Drive Type Fastenings without Taper Action Woodruff Keys Dimensions and Application《不带键锥度的传动式紧固件 半圆键 尺寸和应用》.pdf

1、I UDC 621.886.6 DEUTSCHE NORMEN August 1956 I I c L c c f La c .- E a L -2 O 2 P E! O 0; B P Drive Pyps Fastenings without Tapar Aotion Woodruff Keys Dlmenaiona and Application EN 6888 Mitnehmerverbindungen ohne Ammg; Sohelbenfedern, Abeeeungen und Anwendung Maiensione ia mm Breaking OS oorners lall

2、-round 1 Chamfering Radiuslng at manufacturerla choice Radius at bottom of keywag In shaft and hub Designation of a oodruff key of width b = 4 mm and height h = 5 mmr Woodruff key 4 x 5 DI19 6888 . *) only for automotive applicatione - Material: - - - - St 60 (steel having a tensile strength of at l

3、eaet 60 kg/nuu2 in the finished condition) aternative materiale to be speoified in order Where corresponding dimensions are involved, particularly for shaft extensions, allocation of the Woodruff key cross-sections appropriate to the shaft diameters concerned must be observed. Allocation I applies i

4、n all caaes where the Woodruff key is used in the role of a feather key, i.e. to transmit the whole of the torque. Allocation II applies in all cases where the Woodruff key is used solely for locating the driving element, other elements, e.g. cotters or tapers being employed to transmit the torque.

5、The listed permissible variations for keyway wdths are intended for guidance only. It is recommended that for the widths of broached keyways ISA Class IT 8 be observed instead of IT 9 (similarlj, P8 iMtead of P9, N8 instead of N9 and 58 instead of 59). 3, In 8orkshoP drawings the dimenaione t? and (

6、dl - t 1, also t2 and (dl + t2) may appear side by side; how- ever, in many cases the dimensions tl and (dl + t.23 will euffice. In this connection it may be necessary to allow for permieiible variations and machining allowances on the shaft and hub bore. 4, Preference should be giren to Series A (d

7、eep hub keyway); this conforms to DIN 6885 Sheet 1 (t2 with back clearance). 5, Series B (shallor hub keyway) for aachine tools; this conforms to DIM 6885 Sheet 2. 6, When the relationship between the Woodruff keg and the shaft diameter is based on Allocation II it is permissible to use tolerance co

8、ne D 10 also. Continued on page 2 sinverkovf der Normbltter dur) kdiueing -mu M Desimation of a oodruff keg of at manufacturere choice 5 6 8 10 6,s I 73 9 7,s I 9 I(10) 11 9 I 11 13 11 I 13 16 - 30 - 17 - 22 12 - 17 - 22 - 30 - 38 - 22 30 38 30 38 - width b = 8 mm and height h 9 11 nun: & Diameter d

9、2 :haniering or Length I = Neight (7.85 kg/dm3) kg/lOoO p. Perm.var. Perm. var. radiusing oodruff key 8 x 11 DIN 6888 16119122 19122)25128 22128132 28132145 - 0.1 - 0,l I - 0.2 - 0.1 I - 0,2 - 0.2 082 014 014 or4 + 0.1 + 0,2 + 02 + 42 1572 18s 2143 18,V 21/63 24,49 27s 21,63 273 31P 273 31 /43 43,08

10、 3,01 5,M 4,91 6,888 8,64 10,6 9,17 14,l 192 17,6 24,l 399 Badius at bottom of kegrag In ehaft and hub k Series A4) Depth Perm.var. forA Series P 22 2,4 3 3,4 + 0.1 + 0,l + 0.1 + 0,2 lb 1,7 I? 2/1 + 0,l + 41 + 0.1 + 0,l adius at bottom r2 02 I Old 0,4 I 0,4 Pera.var . - 0,l - 0,2 f keyway - 0.2 - 0,2