BS-5517-1977.pdf

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1、BRITISH STANDARD BS 5517:1977 Incorporating Amendment No. 1 Specification for Dimensions of metric long arbors and their accessories for milling machines UDC 621.914.3 229.324 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:41:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5517:1977 This

2、 British Standard, having been prepared under the direction of the Mechanical Engineering Standards Committee, was published under the authority of the Executive Board on 30 December 1977 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference MEE/75 Draft f

3、or comment 72/33634 DC ISBN 0 580 09726 9 Cooperating organizations The Mechanical Engineering Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following: Associated Offices Technical Committee Association of Consulting Engineers Ass

4、ociation of Hydraulic Equipment Manufacturers Association of Mining Electrical and Mechanical Engineers British Compressed Air Society British Electrical and Allied Manufacturing Association (BEAMA) British Gas Corporation British Gear Manufacturers Association British Internal Combustion Engine Man

5、ufacturers Association British Pump Manufacturers Association British Steel Corporation Chartered Institution of Building Services Crown Agents for Oversea Governments and Administrators Department of Industry Mechanical Engineering Department of Industry National Engineering Laboratory Department o

6、f the Environment* Department of Trade (Marine Division) Department of Transport Electricity Supply Industry in England and Wales Engineering Equipment Users Association Federation of Manufacturers of Construction Equipment and Cranes Health and Safety Executive Institution of Gas Engineers Institut

7、ion of Mechanical Engineers Institution of Plant Engineers Institution of Production Engineers* London Transport Executive Machine Tool Trades Association* Ministry of Defence* National Coal Board Process Plant Association Railway Industry Association of Great Britain Telecommunication Engineering s

8、tyle B, without pilot ends, with nos. 30, 40 and 50 quick release tapers. 2 References The titles of the publications referred to in this standard are listed on the inside back cover. 3 Arbors 3.1 Tapered shank (7/24). The dimensions of the 7/24 tapered shank of the arbor shall comply with the requi

9、rements of BS 1660. 3.2 Length of arbor. For the purposes of this standard the length of the arbor is defined as the distance from the flanged locating face Z to the end of the plain parallel portion (see Figure 1 and Figure 2 and Table 1 and Table 2). 3.3 Dimensions and tolerances 3.3.1 The general

10、 dimensions and tolerances of style A arbors shall be in accordance with Table 1. 3.3.2 The general dimensions and tolerances of style B arbors shall be in accordance with Table 2. 3.4 General features 3.4.1 Arbors shall have a radius at the junction between the parallel portion and the flanged loca

11、ting face Z (see Figure 1 and Figure 2). The radius will normally be as specified in Table 1 and Table 2 but where larger radii are employed, a special end collar, provided with suitable identification marking, shall be supplied. 3.4.2 The minimum distance from the gauge plane of the taper to the fl

12、anged locating face Z (see Figure 1 and Figure 2) shall be such as to preclude any interference between the spindle driving key and the leading face of the first collar (see BS 1660). 3.4.3 Keyway dimensions are given in Table 3 and the ends may be open or closed. NOTEDimensions of suitable keys wil

13、l be found in BS 122-3. 3.5 Screw threads. The screw threads shall comply with the requirements of BS 3643-3:1967 and shall be made to class 6g tolerances as specified in that standard. Unless otherwise specified, arbors will normally be supplied with right hand threads. 3.6 Accuracy 3.6.1 The paral

14、lel portion, or portions, of the arbor shall be concentric with the tapered shank to within 0.012 mm FIM (full indicator movement). Arbors shall be checked for concentricity, firstly at a distance of 25 mm from the flanged locating face and secondly at not more than 25 mm from the other extremity of

15、 the plain parallel position. The following is a recommended method of test for concentricity. With the tapered end of the arbor mounted and held in a standard spindle nose and the other end supported by a mating centre, it is then rotated to obtain indicator readings at the positions specified abov

16、e. NOTEConcentricity has been toleranced to promote accurate performance of the arbor, but attention is drawn to the need for care in the handling and storage of the arbor if its original accuracy is to be maintained. 3.6.2 The flanged locating face Z of the arbor shall be flat to concave. 3.6.3 The

17、 flanged locating face Z shall be square to the axis of the arbor to within 0.005 mm. 4 Bearing collars 4.1 Dimensions and tolerances. The general dimensions and tolerances of bearing collars shall be in accordance with Table 4. 4.2 General features 4.2.1 The collar may be provided with a chambered

18、bore (see Figure 4). 4.2.2 The bore of the collar shall be finished with a chamfer, or a radius or a recess as shown in Figure 4. However, it is recommended that both a chamfer and a recess be provided. The recess shall have a diameter not exceeding that obtained by the application of a 45 chamfer a

19、s specified in column 11 of Table 4. 4.2.3 The outside diameter of the collar shall be chamfered at both ends (see Figure 4). 4.2.4 The end faces of the bearing collar shall be flat, and parallel to each other to within the tolerances stated in Figure 4. Any departure from flatness shall be concave

20、and not convex. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:41:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5517:1977 2 BSI 01-2000 5 Spacing collars 5.1 Dimensions and tolerances. The general dimensions and tolerances of spacing collars shall be in accordance with Table 5. 5.2 Gen

21、eral features 5.2.1 Collars 50 mm long and over may be provided with a chambered bore (see Figure 5). 5.2.2 The bore of the collar shall be finished at each end with a chamfer, or a radius, or a chamfer and recess as shown in Figure 5. However, it is recommended that both a chamfer and a recess be p

22、rovided. The recess shall have a diameter not exceeding that obtained by the application of a 45 chamfer as specified in column 9 of Table 5. 5.2.3 The outside diameter of the collar shall be chamfered at both ends (see Figure 5). 5.2.4 The end faces of the spacing collar shall be flat, and parallel

23、 to each other to within the values stated in Figure 5. Any departure from flatness shall be concave and not convex. 6 Nuts 6.1 Dimensions and tolerances. The general dimensions and tolerances of nuts shall be in accordance with Table 6. 6.2 Screw threads. The screw threads shall comply with the req

24、uirements of BS 3643-3:1967 and shall be made to class 6H tolerances as specified in that standard. 6.3 General features 6.3.1 The nuts shall be of cylindrical form with two flats as shown in Figure 6. 6.3.2 The leading end of the threaded bore shall have a recess and the outer corners shall be prov

25、ided with a 1 mm 45 chamfer (see Figure 6). The face of the nut shall be square to the axis of the thread to within the values stated in Figure 6. The face of the nut shall also be flat and any departure from flatness shall be concave and not convex. 7 Shims 7.1 Dimensions and tolerances. The genera

26、l dimensions and tolerances of shims shall be in accordance with Table 7. The periphery, bore and keyway should be carefully deburred. 8 Marking The number of this British Standard, i.e. BS 5517, shall be indelibly marked on the arbor and, if desired, on the accessories. Licensed Copy: sheffieldun s

27、heffieldun, na, Fri Dec 01 14:41:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5517:1977 BSI 01-20003 Table 1 Dimensions of style A arbors (see Figure 1) NOTEFor keyway dimensions see Table 3. Figure 1 Style A arbor All dimensions are in mm 1234567891011 Nominal diameter d1 Screw thread diameter

28、d2 Length of thread and recess l1 Length of arbor l2Reference keyway width b Reference dimension over arbor to bottom of keyway g PilotMinimum arbor radius r (see 3.4) No. 30 series No. 40 series No. 50 series Diameter d3 Length l3 Tolerance h6a (see Table 3) (see Table 3) Tolerance g6a Tolerance 16

29、M16 1.5 24160413.213201.5 22M20 229 160250250 617.616251.5 250315315 160160 250250250 27M24 234315315315722.020321.5 400400400 500500 160 250 32M27 238315315827.023323.0 400400 500500 a See BS 4500-1. +0.4 0 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:41:11 GMT+00:00 2006, Uncontrolled

30、 Copy, (c) BSI BS 5517:1977 4 BSI 01-2000 Table 2 Dimensions of style B arbors (see Figure 2) NOTEFor keyway dimensions see Table 3. Figure 2 Style B arbor All dimensions are in mm 123456789 Nominal diameter d1 Screw thread diameter d2 Length of thread and recess l1 Length of arbor l2Reference keywa

31、y width b Reference dimension over arbor to bottom of keyway g Minimum arbor radius r (see 3.4) No. 30 series No. 40 series No. 50 series Tolerance h6a (see Table 3)(see Table 3)Tolerance 16M16 1.524160413.21.5 160 22M20 229250250617.61.5 315 27M24 234 160 722.01.5 250250 315315315 400400400 500500

32、630630 32M27 238 250 827.03.0 315 400400 500500 630630 800 40M33 245 315 1034.53.0 400400 500500 630630 800 1 000 630 50M39 3548001244.53.0 1 000 60M45 361 800 1454.03.0 1 000 a See BS 4500-1. +0.4 0 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:41:11 GMT+00:00 2006, Uncontrolled Copy, (

33、c) BSI BS 5517:1977 BSI 01-20005 Table 3 Dimensions of keyway in arbors (see Figure 3) Figure 3 Dimensions of keyway in arbor All dimensions are in mm 12345678 Arbor shaft diameter d1 Keyway width b Tolerance on width of keywayDimension over arbor to bottom of keyway g Radius r (Preferred) close key

34、ing (N9) Free keying (H9) NominalToleranceNominalTolerance 164 +0 0.030 +0.030 0 13.2 +0 0.1 0.16 +0 0.08 226 +0 0.030 +0.030 0 17.6 +0 0.1 0.25 277 +0 0.036 +0.036 0 22.0 +0 0.2 0.25 +0 0.09 328 +0 0.036 +0.036 0 27.0 +0 0.2 0.25 4010 +0 0.036 +0.036 0 34.5 +0 0.2 0.40 5012 +0 0.043 +0.043 0 44.5 +

35、0 0.2 0.40 +0 0.15 6014 +0 0.043 +0.043 0 54.0 +0 0.2 0.40 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:41:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5517:1977 6 BSI 01-2000 Table 4 Dimensions of bearing collars (see Figure 4) Figure 4 Bearing collar All dimensions are in mm 12345

36、6789101112 Bore diameter d1 Outside diameter d2 Length l1 KeywayBearing length l2 Recess diameterb d3 45 chamfer or radius e/r2 Parallelism of end faces t Width b Diameter and height g Radius r1 Tolerance H7a Tolerance g6a Tolerance 0.1 Tolerance C11aNominal Tolerance Nominal Tolerance Tolerance +1

37、0 Tolerance 4260 +0.1 0 +0 0.2 15 164870417.70.6171720.004 568020 22 4260 624.1 +0.1 0 1.0 +0 0.3 15 232 0.004487017 568020 70100250.005 27 4260 729.8 +0.2 0 1.2 15 282 0.004487017 568020 70100250.005 8512030 32 4870 834.8 +0.2 0 1.2 17 334 0.004 568020 7010025 0.005 8512030 40 5680 1043.5 +0.2 0 1.

38、2 200.004 70100254140.005 8512030 50 70100 1253.5 +0.2 0 1.6 +0 0.5 25 514 0.005 8512030 110140350.006 601101401464.2 +0.2 0 1.6356140.006 a See BS 4500-1. b See 4.3. +0.4 0 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:41:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5517:1977 BSI 01

39、-20007 Table 5 Dimensions of spacing collars (see Figure 5) Figure 5 Spacing collar All dimensions are in mm 12345678910 Bore diameter d1 Outside diameter d2 Length l1 KeywayRecess diameterb d3 45 chamfer or radius e/r2 Parallelism of end faces t Width b Diameter and height Radius r1 Tolerance C11a

40、Tolerance h11a Tolerance 0.1 Tolerance C11a Tolerance +0.2 0 Nominal Tolerance Tolerance +1 0 Tolerance 1627 6 417.80.6 + 0 0.2 20.004 10 20 3017 6 +0 0.3 10 223420624.31.020.004 30 6023 2741 6 7301.2 20.004 10 20 30 60 28 100 3247 6 8351.2 40.004 10 20 30 60 33 100 4055 6 1043.71.2 40.004 10 20 30

41、60 10041 5069 6 1253.71.6 +0 0.5 40.005 10 20 30 60 10051 6084 6 1464.41.6 40.005 10 20 30 60 10061 a See BS 4500-1. b See clause 4. +0.4 0 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:41:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5517:1977 8 BSI 01-2000 Table 6 Dimensions of arbo

42、r nuts (see Figure 6) NOTEFor thread form see class 6H of BS 3643-3:1967. Figure 6 Arbor nut All dimensions are in mm 123456789 Nominal diameter of arbor d1 Screw thread (at diameter) d2 Outside diameter d3 Overall thickness l1 RecessFlatsLength l3 Diameter d4 Diameter l2 Width b1 Max.Min. 16M16 1.5

43、2720191.522.0021.6710 22M20 23425251.527.0026.6713 27M24 24130301.532.0031.6115 32M27 24733351.536.0035.3817 40M33 25540431.546.0045.3821 50M39 36948531.555.0054.2625 60M45 38456631.570.0069.2628 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:41:11 GMT+00:00 2006, Uncontrolled Copy, (c) B

44、SI BS 5517:1977 BSI 01-20009 Table 7 Dimensions of shims (see Figure 7) Figure 7 Shim All dimensions are in mm 12345678 Bore diameter d1 Outside diameter d2 Thickness l1 KeywayParallelism of end faces t Width b Diameter and height g Tolerance +0.2 0 Radius r1 Tolerance C11a Tolerance h11a Tolerance

45、0.005 Tolerance C11 NominalTolerance 1626 0.03 0.04 0.05 0.1 0.2 0.3 0.6 1.0 2.0 3.0 417.80.6 +0 0.2 0.004 2233624.31 +0 0.3 2740730 1.23246835 40541043.7 50681253.7 1.6 +0 0.5 0.005 60831464.4 a See BS 4500-1. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:41:11 GMT+00:00 2006, Uncontrol

46、led Copy, (c) BSI 10 blank Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:41:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5517:1977 BSI 01-2000 Publications referred to BS 122, Milling cutters and reamers. BS 122-3, Milling cutters. Metric units. BS 1660, Machine tapers, reduction sle

47、eves and extension sockets. BS 3643, ISO metric screw threads. BS 3643-3, Limits and tolerances for fine pitch threads (constant pitch series). BS 4500, ISO limits and fits. BS 4500-1, General, tolerances and deviations. ISO 240, Milling cutters Interchangeability dimensions for cutter arbors or cut

48、ter mandrels Metric series and inch series. ISO 839-I, Milling machine arbors with 7/24 tapers Part 1: Dimensions. ISO 839-II, Milling machine arbors with 7/24 tapers Part 2: Accessories. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:41:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 55

49、17:1977 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amend