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1、510 INVOLUTE SPLINES. SERRATIONS, AND INSPECTION INVOLUTE SPLINES, SERRATIONS, AND INSPECTION-SAE J498b SAE Standard Report of Parts and Fittings Division approved August 1922 and last revised by Inirolute Splines, Serrations, and Inspection Committee June 1965. Editorial change May 1966. Conforms w
2、ith American Standard ASA B5.15-1960, Involute Splines, Serrations, and Inspections. FOREWORD This SAE Standard for Involute Splines, Serrations, and Inspection was external spline to approximately the same as used in the 1946 Standard. formulated by Technical Committee No. 13 of ASA Sectional Commi
3、ttee The chamfer on external splines for the major diameter fit is constant B5 Standardization of Small Tools and Machine Tool Elements. This for each pitch, with maximum and minimum values, and a form clear- committee was originated in September, 1922, under the procedure of ance is provided. the A
4、merican Standards Association, and sponsored by the National Tooling data and illustrations have been deleted from this revision in Machine Tool Builders Association, the Society of Automotive Engi- anticipation of more detailed coverage currently being developed by the neers, the Metal Cutting Tool
5、 Institute, and the American Society of Metal Cutting Tool Institute. In addition, splines with tapered minor Mechanical Engineers. diameters have been deleted because of their special and limited applica- ASA B5.15-1960 is essentially a cofisolidation of the ASA B5.15-1950 tion. Also deleted are fo
6、rmulas to determine the largest and smallest American Standard on Involute Splines, ASA B5.26-1950 American usable pins, inasmuch as the information was for development only and Standard for Involute Serrations, and ASA B5.31-1953 American Stand- is not required in the standard. ard for Involute Spl
7、ine and Serration Gages and Gaging and conforms Engineering suggestions, including torque capacity of splines, have to SAE J498. also been deleted from the Appendix inasmuch as they were considered Sfilines-Revisions have been made to the text of the earlier standards beyond the scope of the present
8、 standard. to clarify usage and to include definitions, explanations of effective di- Interchangeability with splines made to previous standards has been mensions, and control of fits. All main spline tables have been extended given careful consideration and is discussed in the p e n d i x . to 60 t
9、eeth. Examples of drawing data showing recommended methods Serrations-Involute serrations are involute splines with 45 deg pres- of dimensioning have been expanded. sure angle. Generally they are used for small diameters and in pitches of The minor diameter fit and the 40/80 and 48/96 pitches in the
10、 flat 10/20 and finer. Their principal use is for close fits which are not subject root type have been deleted. Press fits are not tabulated because of the to Sliding and only this fit is tabulated. They offer greater tooth strength specialized nature of their design. h minimum effective of than spl
11、ines and use of the finer serration pitches is often desirable on Class 1 (previous Class A) fit was increased, that of Class 2 (previous highly stressed parts. Also due to the usually large number of teeth, Class B) made equal to zero. Space width and tooth thickness tolerances many index positions
12、 between parts are have been slightly increased, especially for large numbers of teeth. The basic space width of internal involute serrations is greater than for involute splines, and the addendum of internal serrations is less, in Only one class of major diameter fit, equivalent to the previous Cla
13、ss order to equalize this width at the base of the internal and external 2 fit, is recommended. The Involute Spline tables have been rearranged serration teeth. into 3 series, divided as follows: Flat root side fit from 2.515 pitch straight sided internal serrations are optional when design permior.
14、 through 32/64, major diameter fit 316 pitch through 16/32 and Measurements between pins for straight sided serrations are included in fillet root side fit from 2.515 pitch through 48/96. the inspection portion of the standard. The major diameter for flat root side fit iaternal splines has been Tape
15、red serrations have been deleted from the standard because restored to the dimension of the 1946 Standard making the basic pro- previous coverage was felt to be incomplete and development of a more portions of flat root side fit and flat root major diameter fit internal comprehensive standard is con
16、templated. splines the same. This necessitated reducing the major diameter of the INVOLUTE SPLINES, SERRATIONS, AND INSPECTION INDEX (T designates Table, F designates Figure, and all numbers without prefixes designate Paragraphs.) Active Spline Length 2.41 Basic Space Width-Internal Involute Class 1
17、 Fit-Measurement Over Pins Actual Dimensions-Effective and 32.3 Splines-Measurement Between Pins T-75 Minimum Actual Tooth Thickness Actual Space Width 2.28 Basic Space Width-Straight Sided External Spline, T-63 . Actual Space Width-Effective and 12.1 Internal Serrations-Measurements Classes of Fit
18、8.,24. Actual Tooth Thickness 2.29 Between Pins- . T-78 Clearance-Effective . 2.38, T-3,12.3 Actual Tooth Thickness-Effective and. 12.2 Basic Tooth Data-Involute Serration. T-74 Clearance Folm 2.21 . Addendum 2.18 Basic Tooth Data-Involute Spline T-70 Clearance-Nominal 2.39 Alignment Gage Blanks- .
19、-33.2 Basic 0 t h Dimensions T-1, T-40 Clearances-Effective T-42 Allowable for Gages- . T-55 Basic Tooth Thickness-External Involute Combination o E Types 15.2 Allowance-Error . 2.35.11.4 s,-M over pins- T-79 Composite Major Diameter Fit Allowances-Space Width or Tooth Basic Tooth Thickness-External
20、 Involute Plug Gage-GO . F-19,34.3 Thickness GO Gage Wear . T-60 Splines-Measurement Over Pins- T-76 Composite Major Diameter Fit . Analysis of Profile Reading- F-38 Bearing Bore-Number of Teeth and Ring Gage-GO . F-25 . Analytical Inspection- 38 . Composite Plug Gage-GO Side Fit- Angle-Internal Fox
21、m 30.2 Nominal Major Diameter Under T-72 NOT GO Side Fit and NOT GO Major . . - . Angle-Main Pressure 2.13,5., 21. B1anks-A1ignment Gage 33.2 Diameter Fit .34.2, F-18 hngle-Pressure . 2.12 B1anks-Gage . 33. Composite Plug Gage-NOT GO . 34.2 l-l;l 11 T-61 Blanks-Standard . 33.1 Composite Ring Gage-GO
22、 Side Fit- 4ngles-Sevolu tes of T-71 NOT GO Side Fit and Major 9pplication . 19. Calculation of Fillets- 39. Diameter Fit- . .-F-24 Chamfers-Fillets and 9. COmOsite Ring Gages-Taered Base Circle 2.14 Chamfers on External Splines 9.3 Master Or . F-27 Composite Side Fit Plug Gage-GO 34.1 Base Diameter
23、 . 2.15 Change Factor 42. Composite Side Fit Plug Gage with Basic Dimensions-Formulas for 6., 22. Change Factor-Measurement a m . .F-42. F-43 d h- F-22 Basic Dimensions-One/Two Pitch T-69 Change Factors-Derivation of 42.1 Conditions For Measurement- 37.5 . Basic Space Width 22.1 Chart-Index Error F-
24、34 . Basic Space Width-Internal Involute Circle-Base 2.14 Data and Reference Dimensions- Serrations-Measurement Between Circle-Pitch 2 5 Spline . 15.1 Pins- . . . . . . . . T-77 Circular Pitch 2.10 Data-Drawing . 15, 29 INVOLUTE SPLINES. SERRATIONS . AND INSPECTION 511 Data-External Serration-Drawin
25、g F . 1 3 . F-ld Data-External SplineLFillet Root Side Fit-Drawing . F-10 Data-External Spline-Flat Root Major Diameter Fit-Drawing . F-8 Data-External Spline-Flat Root Side Fit-Drawing F-6 Data-Internal Serration-Drawing F . 1 2 . F-14 Data-Internal Spline-Fillet Root Side Fi t-Drawing F-9 Data-Int
26、ernal Spline-Flat Root Major Diameter Fit-Drawing F-7 Data-Internal Spline-Flat Root Side Fit-Drawing . F-5 Data-Involute Serration Basic Tooth T-74 Data-Involute Spline Basic Tooth . T-70 Dedendum 2.19 Definitions-Serration-Terms and 17 . Definitions-Spline Terms and . 2 . Depth of Engagement . 2.2
27、0 Derivation of Change Factors- . 42.1 Diameter-Base 2.15 Diameter-Form 2.22 Diameter-Major . 2.16 Diameter-Minor . 2.17 Diameter-Pin Contact . 37.4 Diameter-Pitch . 2.6 Diameter Under Bearing Bore- Number of Teeth and Nominal Major T-72 Diametral Pitch . 2.8.4.1 Dimensions and Tolerances- Formulas
28、for . 14.1. T-68 Dimensions and Tolerances-Tables 44-51-Formulas for T-73 Dimensions-Basic Tooth T-1. T-40 Dimensions-Effectual and Actual 12., 27., 32.3 Dimensions-Formulas for Basic 6 22 . Dimensions-Modified 40.3 Dimensions-One/Two Pitch Basic . T-69 Dimensions-Serration Tooth 16.1 Dimensions-Spl
29、ine Data and Reference 15.1 Dimensions-Use of Effective and Actual . 13 27.1 Drawing Data . 15 29 . Drawing Data-External Serration F-13 . F-15 Drawing Data-External Spline- Fillet Root Side Fit F-10 Drawing Data-External Spline- Flat Root Major Diameter Fit . F-8 Drawing Data-External Spline- . Fla
30、t Root Side Fit F-6 Drawing Data-Internal Serration F . 1 2 . F-14 Drawing Data-Internal Spline- Fillet Root Side Fit . F-9 Drawing Data-Internal Spline- Flat Root Major Diameter Fit . F-7 Drawing Data-Internal Spline- Flat Root Side Fit F-5 Eccentricity 10.4 Eccentricity-Index Readings Due to F.35
31、. Effect of Errors on External Spline F-4 . Effect of Errors on Internal Spline F-3 Effect of Spline Errors . 11 . Effective and Actual Dimensions 12., 27., 32.3 Effective and Actual Dimensions- Use of . 13.27.1 . Effective and Actual Space Width 12.1 Effective and Actual Tooth Thickness 12.2 Effect
32、ive Clearance 2.38.12.3. T-3. T-42 Effective Error . 2.34 Effective Space Width 2.26 Effective Tooth Thickness 227 Engagement-Depth of . 2.20 Engagement-Length of . 2.40 . Error Allowance 2.35.11.4 Error-Effective 2.34 Error-Index Total . 2.30 Error-Parallelism . 2.32.11.3 Error-Profile 2.31. F-2 Er
33、rors for Gages-Allowable T-55 Errors-Index 11.1 Errors-Measurements of Spline and Serration 38.2 Errors on External Spline-Effect of F-4 Errors on Internal Spline-Effect of F-3 Errors-Positive and Negative Profile . 10.1 Errors-Positive Profile . 11.2 Errors-Serration 26 . Errors-Spline . 10 . Exter
34、nal-Fillet for Fillet Root . F-41 External Involute Serration-Measure- ment Over Pins-Basic Tooth Thickness- T-79 External Involute Splines-Measure- ment Over Pins-Basic Tooth Thickness- T-76 External Serration-Drawing Date- . F-13. F-15 External Serration Tolerances- Internal and T-41 External Serr
35、ations-Measurement Over Pins Minimum Actual Tooth Thickness- . T-67 External Spline . 2.3 External Spline. Class 1 Fit-Measure- ment Over Pins Minimum Actual Tooth Thickness T-63 External Spline. Class 2 Fit-Measure- ment Over Pins Minimum Actual Tooth Thickness T-64 External Spline-Effect of Errors
36、 on . F-4 External Spline-Fillet Root Side Fit-Drawing Data- . F-10 External Spline-Flat Root Major Diameter Fit-Drawing Data- F-8 External Spline-Flat Root Side Fit- Drawing Data- F-6 External Spline Tolerances-Internal and . T-2 External Splines and Serrations- Gages for . 35 . External Splines-Ch
37、amfers on 9.3 External Splines-Form Diameters of . . 40.1 Factor-Change . 42 . Fillet 2.23.25. Fillet For Fillet Root External- F-41 Fillet for Fillet Root Internal- . F-40 Fillet Root Side Fit-Drawing Data- External Spline- F-10 Fillet Root Side Fit-Drawing Data- Internal Spline- . F-9 Fillet Root
38、Splines . 2.24.9.2 Fillets and Chamfers . 9 . Fillets-Calculation of . 39 . Fillets of Flat Root Splines- . 9.1 Fit-Classes of 8 . Fit-Major Diameter . 8.2.7.2 Fit-Side 7.1.8.1 Fit-Types of . 23 7 . Fits-Classes of 24 . Flat Root Major Diameter Fit-Draw- ing Data-External Spline . F-8 Flat Root Majo
39、r Diameter Fit-Draw- ing Data-Internal Spline . F-7 Flat Root Serrations 25.1 Flat Root Side Fit-Drawing Data- External Spline F-6 Flat Root Side Fit-Drawing Data- Internal Spline F-5 Flat Root Splines . 2.25.9.1 Flat Root Splines-Sillets of 9.1 Form Angle-Internal 30.2 Form Clearance 2.21 Form Diam
40、eter 2.22 Form Diameter of External Splines- . .4 0.1 Formulas for Basic Dimensions . .6 22 . Formulas for Dimensions and Tolerances . 14.1. T-68. T-73 Function and Selection of Gages- 32.4 . Gage Blanks- 33 Gage Blanks-Alignment 33.2 Gage Major and Minor Diameters- Tolerances for T-59 Gage Toleranc
41、e Relationship-Part and 36.2 Gage Tolerances- . 36 . Gage Tolerances-Space Width and Tooth Thickness-Relationship of Part and . T-54 Gages-Allowable Errors for T-55 Gages for External Splines and Serrations- 35 . Gages for Internal splines and Serrations- . 34 . Gages for Involute Serrations- 32.6 G
42、ages for Major Diameter-Ring and Snap 35.6 Gages-Function and Selection of 32.4 Gages-GO and NOT GO . 32.2 Gages-Inspection with 32 . Gages-Side Fit and Major Diameter Fit 32.5 Gages-Tolerances for Actual Space Width and Tooth Thickness of . T-56 Gages-Types of . 32.1 GO and NOT GO Gages- 32.2 GO Co
43、mposite Major Diameter Fit Plug Gage- F-19.34.3 GO Composite Major Diameter Fit Ring Gage- .35.3. F-25 GO Composite Side Fit Plug Gage- . 34.1 GO Composite Side Fit Ring Gage- . 35.1 GO Gage Wear Allowances-Space Width or Tooth Thickness T-60 GO Side Fit-NOT GO Side Fit and NOT GO Major Diameter Fit
44、-Composite Ring Gage- .35.2. F-24 Guide for Space Width and Tooth Thickness-Specification . T-4 Intlex Error Chart- : F-34 Index Error-Total . 2.30 Index Errors . 11.1 Index Readings Due to Eccentricity- F-35 Inspection-Analytical . 38 . Inspection Methods- 31.1 Inspection-Space Width and Tooth Thic
45、kness . F-17 Inspection with Gages- . 32 . Interchangeability- . 41 . Internal and External Serration Tolerances T-41 Internal and External Spline Tolerances T-2 Internal-Fillet for Fillet Root F-40 Internal Form Angle .30.2. T43 Internal Involute Serrations-Measurement Between Pins-Basic Space Widt
46、h . . T-77 Internal Involute Splines-Measurement Between Pins-Basic Space Width . . T-75 Internal Serration-Drawing Data- F-12. F-14 Internal Spline . 2.2 Internal Spline-Effect of Errors on F-3 Internal Spline-Fillet Root Side Fit- . Drawing Data- F-9 Internal Spline-Flat Root Major Diameter 512 IN
47、VOLUTE SPLINES. SERRATIONS. AND INSPECTION . Fit-Drawing Data- F-7 Internal Spline-Flat Root Side Fit- Drawing Data- F-5 Internal Spline-Minor Diameter of the 40.2 . Internal Spline-Six Tooth F-32 Internal Splines and Serrations- Gages for r . 34 . Internal Splines-Measurement Between Pins Maximum A
48、ctual Space Width- T-62 Internal Straight Sided Serrations .F-16,3 0. Involute Internal Serrations-Measurement Between Pins Maximum Actual Space Width- T-65 Involllte Roll Angles- T-61 Involute Serration Basic Tooth Data . . T-74 Involute Serrations-Gages for . 32.6 Involute Spline : 2.4 Involute Sp
49、line Basic Tooth Data T-66 Length-Active Spline 2.41 . Length of Engagement 2.40 Limits-Space Width and Tooth . Thickness 12.4 Low Numbers of Teeth- Modifications for 40 . . Machining Tolerance 2.36. T-39. T-53 . Main Pressure Angle . 2.13.5 21 Major Diameter 2.16 Major Diameter Fit . 8.2.7.2 Major Diameter Fit-Composite Plug Gage-Go Side Fit-Not Go Side . Fit and F-18 Major Diameter Fit-Composite Ring Gage-Go Side Fit-Not Go Side Fit and . F-24 Major Diameter Fit-Drawing Data- External Spline-Flat Root F-8 Major Diameter Fit-Drawing
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