1、BRITISH STANDARD BS 1660-3: 1988 Machine tapers Part 3: Specification for turret sockets and reduction sleeves with tapped ends for tools with Morse taper shanks UDC 621.9 229.211.6.224.225BS 1660-3:1988 This British Standard, having been prepared under the directionof the Machine, Engineers and Han
2、d Tools Standards Committee, was published under the authority ofthe Board of BSI and comes into effect on 30September1988 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference MTE/7 Draft for comment87/77517 DC ISBN 0 580 16627 9 Committees responsible fo
3、r this British Standard The preparation of this British Standard was entrusted by the Machine, Engineers and Hand Tools Standards Committee (MTE/-) to Technical Committee MTE/7, upon which the following bodies were represented: Gauge and Tool Makers Association Institution of Production Engineers Mi
4、lling Cutter Association Twist Drill and Reamer Association Advanced Manufacturing Technology Research Institute Amendments issued since publication Amd. No. Date of issue CommentsBS1660-3:1988 BSI 08-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Reduction sl
5、eeves with tapped ends 1 3 Turret sockets 1 Figure 1 Reduction sleeve with tapped end 1 Figure 2 Turret socket 2 Table 1 Dimensions of reduction sleeves with tapped ends 2 Table 2 Dimensions of turret sockets 3 Publications referred to Inside back coverBS 1660-3:1988 ii BSI 08-1999 Foreword This Par
6、t of BS1660 has been prepared under the direction of the Machine, Engineers and Hand Tools Standards Committee. This Part of BS1660 does not include non-preferred size7 Morse taper shanks or turret sockets given in imperial dimensions, both of which were included in BS1660:1972. Other Parts of BS166
7、0 currently published are as follows. Part 1: Specification for shanks and sockets with self-holding tapers (Morseand metric5%); Part 2: Specification for reduction sleeves and extension sockets for tools with Morse taper shanks; Part 4: Specification for spindle noses and tool shanks with self rele
8、ase7/24 tapers; Part 5: Specification for adaptors with7/24 internal and external tapers; Part 6: Specification for adaptors with external7/24 tapers for tools with Morse taper shanks; Part 7: Specification for extension adaptors with external7/24 tapers for tools with Morse taper shanks; Part 8: Sp
9、ecification for collar dimensions for7/24 taper tool shanks and equipment; Part 9: Specification for cotter slots; Part 10: Specification for drill chuck tapers (Jacob and short Morse). BS1660-1 to BS1660-10 collectively supersede BS1660:1972 which is withdrawn. A British Standard does not purport t
10、o include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover,
11、 pages i and ii, pages1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS1660-3:1988 BSI 08-1999 1 1 Scope This Part of BS1660 specifies
12、 dimensions and tolerances for reduction sleeves with tapped ends for Morse taper shanks of sizes1 to6 and turret sockets of sizes1 to5. 2 Reduction sleeves with tapped ends 2.1 General dimensions and tolerances 2.1.1 The general dimensions of reduction sleeves shall be in accordance withTable 1. 2.
13、1.2 The dimensions and tolerances for the internaltaper shall be identical with those given inBS1660-1 for the appropriate Morse taper. 2.1.3 The dimensions and tolerances for the external taper shall be identical with those given in BS1660-1 for the appropriate Morse taper, except for dimensions a
14、1and l 2(seeFigure 1) which are greater in all cases except for three reduction sleeves for size6 Morse tapers, than the corresponding dimensions a and l 2of BS1660-1. 2.2 Tolerance on concentricity The tolerance on the concentricity of the axis of the bore with the external taper shall be0.025mm FI
15、M for precision ground items. For fine machined items the tolerance shall be0.050mm FIM. 2.3 Designation A reduction sleeve shall be designated by its external Morse taper and internal Morse taper, in that order. Example. The designation of a reduction sleeve with external Morse taper4 and internal
16、Morse taper2 is as follows: M.T.4 2 3 Turret sockets 3.1 General dimensions and tolerances 3.1.1 The general dimensions of turret sockets shall be in accordance withTable 2. 3.1.2 The dimensions and tolerances for the internaltaper shall be identical with those given inBS1660-1 for the appropriate M
17、orse taper. 3.1.3 The dimensions and tolerances for the external diameter shall be in accordance with Table 2. The length of turret socket shall be as shown inTable 2. 3.2 Tolerance on concentricity The tolerance on the concentricity of the axis of the bore with the external diameter shall be0.025mm
18、 FIM for precision ground items. For fine machined items the tolerance shall be0.050mm FIM. 3.3 Designation A turret socket shall be designated by its external diameter and its internal Morse taper, in that order. Example. The designation of a turret socket with external diameter of30mm and inside M
19、orse taper No.3 is as follows. 30 M.T.3. Figure 1 Reduction sleeve with tapped endBS 1660-3:1988 2 BSI 08-1999 Table 1 Dimensions of reduction sleeves with tapped ends (seeFigure 1) 1 2 3 4 5 6 7 8 9 External taper Tapped end Internal taper Morse tapersize d l 2 a 1 d 1 d 4 m Morse tapersize D 2 mm
20、17.780 mm 105 mm 30 M10 mm 14 mm 24 1 mm 12.065 3 23.825 110 16 M12 19 28 1 12.065 125 44 M12 19 28 2 17.780 4 31.267 119 16.5 M16 25 32 1 12.065 128 25.5 M16 25 32 2 17.780 147 44.5 M16 25 32 3 23.825 5 44.399 155 25.5 M20 35.7 40 1 12.065 155 25.5 M20 35.7 40 2 17.780 155 25.5 M20 35.7 40 3 23.825
21、 182 53 M20 35.7 40 4 31.267 6 63.348 190 8 M24 51 50 1 12.065 190 8 M24 51 50 2 17.780 190 8 M24 51 50 3 23.825 200 18 M24 51 50 4 31.267 230 48 M24 51 50 5 44.399 Figure 2 Turret socketBS1660-3:1988 BSI 08-1999 3 Table 2 Dimensions of turret sockets (seeFigure 2) 1 2 3 4 Morse taper Gauge plane di
22、ameter d External diameter D tol g6 a Overall length l mm mm mm 1 12.065 16 80 20 90 25 95 30 115 2 17.780 25 95 30 115 40 135 3 23.825 30 115 40 135 50 175 4 31.267 40 135 50 175 5 44.339 50 175 a For an explanation of this notation see BS4500-1.4 blankBS1660-3:1988 BSI 08-1999 Publications referre
23、d to BS 4500, ISO limits and fits. BS 4500-1, General, tolerances and deviations. BS 1660, Machine tapers. BS 1660-1, Specification for shanks and sockets with self-holding tapers (Morse and metric5%). BS 1660-3: 1988 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the
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