1、BRITISH STANDARD AUTOMOBILE SERIES BS AU 214a-1:1987 ISO 8667:1986 Incorporating Amendment No.1 Specification for Gearbox flanges Part1: Specification for dimensions of cross-tooth gearbox flanges, type T, for commercial vehicles and buses UDC 629.114.4/.5:621.825.24 Licensed Copy: London South Bank
2、 University, London South Bank University, Wed Mar 22 03:00:25 GMT 2006, Uncontrolled Copy, (c) BSIBSAU214a-1:1987 This BritishStandard, having been prepared under the directionof the Automobile Standards Committee, was published under the authority ofthe Board of BSI and comesintoeffect on 30Januar
3、y1987 BSI 02-2000 The following BSI references relate to the work on this standard: Committee reference AUE/13 Draft for comment84/78655 DC ISBN 0 580 15687 7 Committees responsible for this BritishStandard The preparation of this BritishStandard was entrusted by the Automobile Standards Committee (
4、AUE/-) to Technical Committee AUE/13, upon which the following bodies were represented: Department of Transport (Highways) Freight Transport Association Institute of Road Transport Engineers (Incorporated) London Regional Transport Ministry of Defence National Bus Company Road Haulage Association Lt
5、d. Society of Motor Manufacturers and Traders Limited Amendments issued since publication Amd. No. Date of issue Comments 5778 January1988 Indicated by a sideline in the margin Licensed Copy: London South Bank University, London South Bank University, Wed Mar 22 03:00:25 GMT 2006, Uncontrolled Copy,
6、 (c) BSIBSAU214a-1:1987 BSI 02-2000 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope and field of application 1 2 References 1 3 Dimensions and tolerances 1 4 Designation 1 Figure 2 Table 1 Publications referred to Inside back cover Licensed Copy: London South B
7、ank University, London South Bank University, Wed Mar 22 03:00:25 GMT 2006, Uncontrolled Copy, (c) BSIBSAU214a-1:1987 ii BSI 02-2000 National foreword This BritishStandard has been prepared under the direction of the Automobile Standards Committee and is identical with ISO8667:1986 “Commercial vehic
8、les and buses Cross-tooth gearbox flanges, type T”, published by the International Organization for Standardization (ISO). Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a BritishStandard without deviation. Some terminology and ce
9、rtain conventions are not identical with those used in BritishStandards; attention is drawn especially to the following. The comma has been used as a decimal marker. In BritishStandards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “Internationa
10、l Standard” and “ISO8667” appear, referring to this standard, they should be read as “BritishStandard” and “BS AU214a-1” respectively. The Technical Committee has reviewed the provisions of ISO1101:1983 to which reference is made in the text, and has decided that they are acceptable for use in conju
11、nction with this standard. A related BritishStandard to ISO1101 is BS308 “Engineering drawing practice” Part3:1972 “Geometrical tolerancing”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct applic
12、ation. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references International Standard Corresponding BritishStandard ISO7646:1986 BS AU214: Gearbox flanges Part2:1987 Specification for dimensions for type A gearbox flanges for commercial vehicles
13、 and buses (Identical) ISO7647:1986 Part3:1987 Specification for dimensions for type S gearbox flanges for commercial vehicles and buses (Identical) Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 and 2, an inside back cover and a back cover. This
14、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. Licensed Copy: London South Bank University, London South Bank University, Wed Mar 22 03:00:25 GMT 2006, Uncontrolled Copy, (c) BSIBSAU214
15、a-1:1987 BSI 02-2000 1 1 Scope and field of application This International Standard specifies the nominal dimensions and tolerances which affect interchangeability between cross-tooth gearbox flanges, type T, and mating parts used on commercial vehicles and buses. Dimensions and tolerances of the ma
16、ting parts, other than those occurring at the interface of the two flanges, are left to the discretion of the manufacturer of that component. 2 References ISO1101, Technical drawings Geometrical tolerancing Tolerancing of form, orientation, location and run-out Generalities, definitions, symbols, in
17、dications on drawings. ISO7646, Commercial vehicles and buses Gearbox flanges Type A. ISO7647, Commercial vehicles and buses Gearbox flanges Type S. 3 Dimensions and tolerances Nominal dimensions and tolerances which affect the interchangeability of type T gearbox flanges shall be as shown in the Ta
18、ble and Figure. Where the flange is formed by forging, an additional groove either side of the driving teeth is permissible. In this case the additional grooves do not form part of the drive. 4 Designation Gearbox flanges meeting the requirements of this International Standard shall be identified by
19、 a certain number of elements, to be given in the following order: a) reference to this International Standard; b) type T; c) size code. Example: Designation of a type T gearbox flange of size code1: Flange ISO8667-T1 Table NOTEGearbox flanges of types A and S, as specified in ISO7646 and ISO7647 re
20、spectively, are designed for force-locking (friction) torque transmission, their capacity for transmission being determined by the size of the flange and the bolts. As static or dynamic torque loads increase, however, a point is reached when these are inadequate, and there is a need for form-locking
21、 components. Increasing problems are being encountered with the flange joint in the assembly of drive shafts for heavy lorries, as power tools cannot be used because of space limitations, and because the large bolts, M16 type, have to be tightened steadily to a torque loading of about300Nm for examp
22、le. With special vehicles it may also be necessary to replace the engine, transmission units or axles in the shortest possible time, but this can be impracticable with a conventional flange joint which has, for example, ten M16bolts. This form-locking flange joint has been developed to avoid the nee
23、d to increase the size of the flange or bolts while achieving the required performance or to simplify assembly. Initially, a flange joint with spiral bevel-type teeth was developed but this is expensive to manufacture. The flange joint specified in this International Standard overcomes the problems
24、described above. It requires only four bolts which are smaller than comparable flanges of conventional construction, and the alignment of the drive shaft is not dependent on them. The drive shaft flange and the transmission flange centre themselves through the groups of teeth which intersect at70 wh
25、ich improves alignment, and play, which occurs in conventional joints, is eliminated. As the drive is transmitted through the teeth, the axial force which arises under torque loading, which must be carried by the bolts, is relatively low. A further feature is that jamming between flanges during dism
26、antling is prevented. The teeth can be produced on a universal milling machine with special cutters for short production runs, while for mass production the use of a surface broaching machine is envisaged. The simple tooth form can be measured easily, thus ensuring interchangeability between compone
27、nts made by different manufacturers. Size code d 1 0,5 d 2 d 3 0,5 d 4 0 0,2 l 0 0,5 d 5 +0,2 0 d 6 0,2 1 150 130 95 111 12 13 15 2 165 140 105 121 12 13 15 3 180 150 105 128 14 15 17 4 200 165 125 143 16 15 17 Licensed Copy: London South Bank University, London South Bank University, Wed Mar 22 03:
28、00:25 GMT 2006, Uncontrolled Copy, (c) BSIBSAU214a-1:1987 2 BSI 02-2000 Figure Licensed Copy: London South Bank University, London South Bank University, Wed Mar 22 03:00:25 GMT 2006, Uncontrolled Copy, (c) BSIBSAU214a-1:1987 BSI 02-2000 Publications referred to See national foreword. Licensed Copy:
29、 London South Bank University, London South Bank University, Wed Mar 22 03:00:25 GMT 2006, Uncontrolled Copy, (c) BSIBS AU 214a-1:1987 ISO 8667:1986 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards
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