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1、UDC 621.924.6:621.833 JAPANESE INDUSTRIAL STANDARD Gear cutter - Tooth profiles and .dimensions Translated and Published bY Japanese Standards Association Printed in Japan 9s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing,
2、Bernie Not for Resale, 03/14/2007 19:35:43 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*4350 91 m 4933608 0085758 2 m a In the event of any doubt arising, the original Standard in Japanese is to be final authority. Copyright Japanese Standards Association Provide
3、d by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:35:43 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS B*4350 91 = Y933604 0085759 4 - i o UDC 621.924.6:621.833 JAPANESE INDUSTRIAL STANDARD J I S Gear cutt
4、er - Tooth profiles and B 4350-1991 dimensions 1. Scope This Japanese Industrial Standard specifies the basic rack tooth profiles (hereafter referred to as the “tooth profile“), of gear cutters for spur gears, helical gears, double-helical gears, splines and serrations with involute tooth profile. R
5、emarks: The applicable standards to this Standard are as given in the following: JIS B O102 Glossary of Gear Terms JIS B 0174 Gear Cutters - Vocabulary JIS B 1602 Involute Serrations JIS B 1701 Involute Gear Tooth Profile and Dimensions JIS D 2001 Involute Spline for Automobiles 2. Definitions Defin
6、itions of principal terms used in this Standard shall be as defined in JIS B Dl74 and JIS B 0102. 3. Types and Symbols The types and symbols of the tooth profiles shall be in accordance with Table 1. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employee
7、s/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:35:43 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*4350 91 m 4933b08 0085760 O m I 2 B 4350-1991 Table 1, Types and Symbols for Tooth Profiles Classification Full depth tooth profile I - Stub tooth pro
8、files I- High tooth profile Topping tooth profile I- Semi-topping tooth profile I- Protuberance semi- topping tooth. profile . Modified tooth profiles l- Involute serration tooth profile Involute spline tooth - profile Tooth profile symbol For pre-finishing shaving grinding For For finishing roughin
9、g Pre- Pre- - - N RGH STB(-N) (l) I - I - I - I I l PSP PGSP MF-B 1 MF-B 2 INV-SE 1 Notes ( I ) () Symbols in parentheses may be omitted, Symbols in parentheses may be used instead, 4. Tooth Profiles and Dimensions 4 . 1 Full Depth Tooth Profiles The full depth tooth profiles shall be those correspo
10、nding to JIS B 1701, and shall be classified into two types of for finishing and for roughing, and be in accordance with Table 2, Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:35:43 MD
11、TNo reproduction or networking permitted without license from IHS -,-,- J I S B*4350 91 = 4933608 00857bL 2 Tooth depth ho Cutting depth - h Bottom Clearance c 3 B 4350-1991 2.5 m I 2.4 m 2.25 m 0.25 m I 0.15 m Table 2. Full Depth Tooth Profiles (For finishing) (For roughing) Fillet radius r, 0.375
12、m 0.2 m Tooth profile finishing) roughing) Module m Standard pressure angle 20 Addendum ha I 1.25 m h,l 1.25 m I 1.15 m Dedendum Pitch PI itm Tooth thickness s(9 I 0.5 P I 0.5 P-As Tip radius r,() I 0.375 m I 0.3 m Notes (3) The notation Asused in calculation of tooth thickness indicates the finishi
13、ng stock. The reference values forAsare given in Informative Reference Attached Table 1. Where module m is 1 mm or less, a round with r, may be substituted by chamfering, and shall not be applied to the case of module m 0 . 4 mm or less. (4) 4.2 Stub Tooth Profiles The stub tooth profiles shall be t
14、hose of which tooth depths are less than the full depth tooth profiles, and shall be classified into three types of N, F and W, and be in accordance with Table 3 and Table 4. . The type W shall be that for processing the double helical gear of helix angle 22.5“. Copyright Japanese Standards Associat
15、ion Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:35:43 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*4350 91 W 4933b08 00857b2 4 m 4 B 4350-1991 Table 3. Stub Tooth Profiles (Types N and F
16、) I Module m m I mim I I 20“ Standard pressure a anda Addendum 1.25 m Dedendum Tooth depth 2.0 m 2.5 m Cutting depth h I 1.8 m I 2.25 m Bottom clearance c I 0.2 m I 0.25 m Pitch PI nm Tooth thickness Tip radius Fillet radius Remarks: The module of Type F shall be indicated by m/m. m indicates the mo
17、dule used in calculation of the tooth depth, Table 4. Stub Tooth Profiles (Type W) Transverse module mt I mt 20“ Transverse pressure angle at Addendum ha 1.0053 mt Dedendum hfl 1.0053 m, Tooth depth ho 2.0106 mt Cutting depth h 1.8849 mt Bottomclearance c I O. 125 7 mt Pitch PI n mt Tooth thickness
18、0.5 P Tip radius 0.2 mt Fillet radius Yi 0.2 mt 4.3 High Tooth Profiles The high tooth profiles shall be those of which tooth depths are higher than those of the full depth tooth profiles, and shall be classified into two types of for roughing and for preprocessing, and be in accordance with Table 5
19、, Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:35:43 MDTNo reproduction or networking permitted without license from IHS -,-,- JE B*4350 91 4933608 00857b3 b = RGH-HI PE-s (for roughi
20、ng) (for pre-shaving) 5 B 4350-1991 PRE-G (for pre-grinding) Table 5. High Tooth Profiles Module m Standard pressure cy ngle Addendum ha Dedendum Jlf ?H. 20“ 1.35 m 1.25 n i Tooth depth ho I Pitch P Tooth thickness s (3) Tip radius ra(4) Fillet radius rf 2.6 m I m 0.5 P-AS 0.3 m 0.3 m Cutting depth,
21、 h I 2.35 m Bottom- clearance c I 0.25 m 4.4 Topping Tooth Profile The topping tooth profile shall be that which processes the tooth profile corresponding to JIS B 1701 and its outer periphery also at the same time, and be in accordance with Table 6. Table 6. Topping Tooth Profile TOP Module Standar
22、d pressure Addendum 1.25 in Dedendum 1.0 m Tooth depth ho I 2.25 m Cutting depth h 2.25 m Pitch P zm Tooth thickness S 0.5 p Tip radius Ya (4) 0.375 m Fillet radius rf 0.2 m Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, B
23、ernie Not for Resale, 03/14/2007 19:35:43 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS B*4350 91 m 4933608 00857b4 m . 6 B 4350-1991 4.5 Semi-topping Tooth Profiles The semi-topping tooth profiles shall be those which process the chamfering of the tip and of the gear
24、 at the same time, and these shall be classified into two types of for finishing and for pre-finishing, and be in accordance with Table 7, Table 7. Semi-topping Tooth Profiles (For finishing) (For pre-finishing) Tooth profile For finishing (For pre-finishing) S-TOP PS PGS !(for pre-shaving) (for pre
25、-grinding) Module m 20“ Standard pressure Ly angle Addendum hu 1.25 m 1.35 m Cutting depth h 2.25 m 2.35 m Pitch P zm Tooth thickness s (9 0.5 p 0.5 p-AS Tip radius I 0.375 m I 0.3 m Fillet radius yj Notes (5) ( 6 ) The shape of gear tip chamfered portion is shown in Attached Reference Fig. 1. When
26、gears with the number of teeth other than that of the designed gear are cut with the semi-topping hob for it, the amount of chamfering is to be as given in Attached Reference Fig. 2. 4.6 Protuberance Tooth Profile The protuberance tooth profile shall be that which forms the undercut portion at the d
27、edendum flank of the gear, having protuberances in order to avoid interference of post-machining (shaving or grinding) tools, and shall be in accordance with Tables 8 and 9. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, B
28、ernie Not for Resale, 03/14/2007 19:35:43 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*4350 91 W 4933608 0085765 T Standard pressure cy angle Addendum h a 7 B 4350-1991 20 1.35 m Table 8. Protuberance Tooth Profile Enlargement of Part P PP PSP (for pre-shaving) S
29、tandard pressure angle cy 20 PP PGP Tooth profile hbol I (for pre-shaving) I (for pre-grinding) PGP PGSP (for pre-grinding) 20 Module m l ? H . A Depth from top to junction of roiind Depth of portion parallel to flank Depth of portion having an angle to flank Angle of protuberance e 0.1974 m 0.197 4
30、 m 0.1 m 0.08 m 11.0828 H 7.0283 H 5“ 8 “ 2.35 m Bottom clearance c Tip radius ya 0.3 m Pitch- 0.3 m PI zc m Tooth thickness s ( ) I 0.5 #-AS Fillet radius Yr I 0.3 m As given in Table 9. Dimension of protube- rance (part P) Table 9. Dimension of Protuberance A =ya(l-sina) C=Hcos(cy-B)/sinB 0.75 As
31、I 0.7 As Height of protuberance H (7) I Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:35:43 MDTNo reproduction or networking permitted without license from IHS -,-,- i J I S B*4350 91
32、4933b08 00857bb L W 8 B 4350-1991 4.7 Protuberance Semi-Topping Tooth Profile tooth profile shall be that tooth profile which has profile with the semi-topping tooth profile, and be The protuberaace semi-topping combined the protuberance tooth in accordance with Table 10. Table 10. Protuberance Semi
33、-topping Tooth Profile Enlargement of Part P PSP PGSP (for pre-shaving) (for pre-grinding) Module ml tn I 20“ Standard pressure angle a Addendum h l 7 1.35 m Cutting depth h 2.35 m Pitch P i in Tooth thickness S (“) I 0.5 p - h Depth of Chamfer I - starting point Calculate 16 ) with the dimensions (
34、 5.) Pressure angle at chamfered portion of the gear t o be cut. Filler radius r 3 = Dimension of protube- rance (part P) As given in Table 9, 4.8 Modified Tooth Profiles The modified tooth profiles shall be those for performing the tooth profile modification of gears, and these shall be classified
35、into three types of B type 1, B type 2 and type W, and be in accordance with Tables 11 and 12. helical gear of the helix angle 22.5. The type W shall be the tooth profile which processes the double Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/
36、1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:35:43 MDTNo reproduction or networking permitted without license from IHS -,-,- . MF-B 1 (Type B 1) J I S BX4350 91 W 4733608 00857b7 3 MF-B 2 (Type B 2) 9 B 4350-1991 IZO E Cutting depth h c Bottom clearance C P S Tip radius ya Fillet radi
37、us 7, Table 11. Modified Tooth Profiles (Type B1 and Type B2) 2.5 m 2.25 m 0.25 m n m 0.5 o .39 m 0.39 m Depth of modifica- Radius of modifi- tion starting point h m R ,.-tin“ Dedendum hf I 1.25 w z 1.757 m 1.622 m 15.75 m 12.87 m q 0.009 m Amount of bottom modification 0.019 m Transverse module mt
38、Transverse pressure angle at Addendum ha Dedendum hf Tooth depth ho Table 12. Modified Tooth Profile (Type W) m 20“ 1.005 3 m, 1.0053 m, 2.010 6 mt 2 o -c Y c Tooth profile MF-W (Type W) II , vv Cutting depth h I 1.8849 m, Pressure angle modi-LYtm fication 4 Amount of bottom modification Bottom clea
39、rance c I o. 125 7 ?nt 22.5“ 0.0183 rn, Pitch PI n mt Tooth thickness Tip radius 0.2 mt Fillet radius 0.2 rn, I Depth of modifica- 1.52 mt tion starting point 12, I 4.9 Involute Serration Tooth Profile This tooth profile shall be the tooth profile corresponding to the requirements of JIS B 1602, and
40、 be-in accordance with Table 13. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:35:43 MDTNo reproduction or networking permitted without license from IHS -,-,- 10 B 4350-1991 J I S B*43
41、50 91 M 4933b08 0085768 5 Table 13. Involute Serration Tooth Profile Tooth profile Module m Standard .pressure cy anele Addendum ha Dedendum hj Tooth depth ho Cutting depth h Bottom clearance c Pitch P Tooth thickness S Tip radius ya Fillet radius y/ INV-SE m 45 0.6 m 0.6 m 1.2 m 1.0 m 0.2 m nm 0.5
42、p 0.44”7 m 0.4476 m 4.10 Involute Spline Tooth Profile These tooth profiles shall be the tooth profiles corresponding to the requirements of JIS D 2001, and be in accordance with Table 14. Table 14. Involute Spline Tooth Profiles (Centering by contact of tooth flanks-Flat bottom type) P -1- a (Cente
43、ring by contact of tooth flanks-Round bottom type) (Centering by contact of major dia, surfaces-Flat bottom type) P _I_ a (Centering by contact of major dia. surfaces-Round bottom type) P - 4 4 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111
44、111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:35:43 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*4350 91 = 4933608 0085769 7 By contact of tooth flanks Flat bottom Round .bottom type type in 11 B 4350-1991 By dia. contact surfaces Of major Flat bottom R
45、ound bottom m type type Table 14 (Continued) 20“ 1.0 m 1.146 m 0.4 m 0.4 m Centering Item 20“ 1.0 m 1.146 m - Module m Standard pressure angle CY Addendum ta, 1.2 m 0.2 m Dedendum 1.346 m 1.2 m 1.346 m 0.2 m - h J Tooth depth 120 Cutting depth h Bottom clearance C Pitch P Tooth thickness S Tip radiu
46、s ya Fillet radius Depth of chamfer starting point C Pressure angle at chamfered Dart a ; INV-SP zm I zm 0.5 fi I 0.5 fi o. 3 m Calculate with dimen- sionQ) of splines to be formed. Note The shape of tip chamfered part of spline is shown in Informative Reference Attached Fig. 1. Reference Standards:
47、 JIS B 0121-Gear Notation-Symbols for Geometrical Data JIS B 4354-Single Thread Gear Hobs JIS B 4355-Single Thread Fine Pitch Gear Hobs JIS B 4356-Pinion Type Cutters JIS B 4358-Rack Type Cutters Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:35:43 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S 8*4350 91 4933b08 0085770 3 12 B 4350-1991 Informative Reference Attached Table 1. Informative Reference Values of Finishing Stock As, Unit: mm Too