BS-ISO-2490-2007.pdf
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1、BRITISH STANDARD BS ISO 2490:2007 Solid (monobloc) gear hobs with tenon drive or axial keyway, 0,5 to 40 module Nominal dimensions ICS 21.200 ? Licensed Copy: London South Bank University, London South Bank University, Wed Jan 02 02:00:02 GMT+00:00 2008, Uncontrolled Copy, (c) BSI BS ISO 2490:2007 T
2、his British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2007 BSI 2007 ISBN 978 0 580 53947 3 National foreword This British Standard is the UK implementation of ISO 2490:2007. The UK participation in its preparation was entrusted by Techni
3、cal Committee MCE/5, Gears, to Panel MCE/5/-/3, Gear forming tools. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct applic
4、ation. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Wed Jan 02 02:00:02 GMT+00:00 2008, Uncontrolled Copy, (c) BSI Reference numbe
5、r ISO 2490:2007(E) INTERNATIONAL STANDARD ISO 2490 Third edition 2007-10-01 Solid (monobloc) gear hobs with tenon drive or axial keyway, 0,5 to 40 module Nominal dimensions Fraises-mres monoblocs entranement par tenon ou par clavette, de modules 0,5 40 Dimensions nominales BS ISO 2490:2007 Licensed
6、Copy: London South Bank University, London South Bank University, Wed Jan 02 02:00:02 GMT+00:00 2008, Uncontrolled Copy, (c) BSI ii Licensed Copy: London South Bank University, London South Bank University, Wed Jan 02 02:00:02 GMT+00:00 2008, Uncontrolled Copy, (c) BSI iii Contents Page Foreword iv
7、1 Scope . 1 2 Normative references. 1 3 Nominal dimensions. 1 Annex A (informative) Multiple thread hobs 5 Bibliography. 10 BS ISO 2490:2007 Licensed Copy: London South Bank University, London South Bank University, Wed Jan 02 02:00:02 GMT+00:00 2008, Uncontrolled Copy, (c) BSI iv Foreword ISO (the
8、International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee
9、 has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnic
10、al standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bo
11、dies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying an
12、y or all such patent rights. ISO 2490 was prepared by Technical Committee ISO/TC 60, Gears, Subcommittee SC 1, Nomenclature and wormgearing. This third edition cancels and replaces the second edition (ISO 2490:1996), of which Tables 1 and 2, Figure 1 and Annex A have been technically revised. BS ISO
13、 2490:2007 Licensed Copy: London South Bank University, London South Bank University, Wed Jan 02 02:00:02 GMT+00:00 2008, Uncontrolled Copy, (c) BSI 1 Solid (monobloc) gear hobs with tenon drive or axial keyway, 0,5 to 40 module Nominal dimensions 1 Scope This International Standard specifies the no
14、minal dimensions of general-purpose single-start solid (monobloc) gear hobs with axial keyway or tenon drive of 0,5 to 40 module. These hobs are intended for the production of gears which conform to ISO 54 and present a 20 pressure angle in conformity with ISO 53. NOTE Solid hobs are those made from
15、 one solid piece of material, as opposed to hobs which have inserted blades. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the refer
16、enced document (including any amendments) applies. ISO 53:1998, Cylindrical gears for general and heavy engineering Standard basic rack tooth profile ISO 54:1996, Cylindrical gears for general engineering and for heavy engineering Modules ISO 240:1994, Milling cutters Interchangeability dimensions f
17、or cutter arbors or cutter mandrels ISO 2768-1:1989, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications ISO 2780:1986, Milling cutters with tenon drive Interchangeability dimensions with cutter arbors Metric series 3 Nominal dimensions Th
18、e nominal dimensions shall be as shown in Figure 1 and given in Tables 1 and 2. BS ISO 2490:2007 Licensed Copy: London South Bank University, London South Bank University, Wed Jan 02 02:00:02 GMT+00:00 2008, Uncontrolled Copy, (c) BSI 2 a) Hob with axial keyway b) Hob with tenon drive Key D1 hub dia
19、meter (mm) D outside diameter (mm) d bore diameter (mm) L overall length of hob with axial keyway (mm) L0 overall length of hob with tenon drive (mm) c minimum hub length (mm) NOTE Keyway dimensions are specified in ISO 240 and tenonway dimensions are specified in ISO 2780. Figure 1 Gear hob dimensi
20、ons BS ISO 2490:2007 Licensed Copy: London South Bank University, London South Bank University, Wed Jan 02 02:00:02 GMT+00:00 2008, Uncontrolled Copy, (c) BSI 3 Table 1 Nominal dimensions of small-bore-type single-thread gear hobs Module, m Reference Series Hub diameter Outside diameter Bore diamete
21、r Overall length Overall length Minimum hub length Typical number of gashes D1 D a d b L a L0 a c Type b I II mm mm mm mm mm mm 1 0,5 24 8 10 1 12 0,55 24 8 10 1 12 0,6 24 8 10 1 12 0,7 24 8 10 1 12 0,75 24 8 12 1 12 0,8 24 8 12 1 12 0,9 24 8 12 1 12 1,0 24 8 12 1 12 2 0,5 32 10 20 30 2 12 0,55 32 1
22、0 20 30 2 12 0,6 32 10 20 30 2 12 0,7 32 10 20 30 2 12 0,75 32 10 20 30 2 12 0,8 32 10 20 30 2 12 0,9 32 10 20 30 2 12 1,0 32 10 20 30 2 12 1,125 32 10 20 30 2 12 1,25 40 10 25 35 2 10 1,375 40 10 25 35 2 10 1,50 40 10 25 35 2 10 1,75 40 10 30 40 2 10 2,0 40 10 30 40 2 10 3 0,5 32 13 20 30 2 12 0,55
23、 32 13 20 30 2 12 0,6 32 13 20 30 2 12 0,7 32 13 20 30 2 12 0,75 32 13 20 30 2 12 0,8 32 13 20 30 2 12 0,9 32 13 20 30 2 12 1,0 32 13 20 30 2 12 1,125 32 13 20 30 2 12 1,25 40 13 25 35 2 10 1,375 40 13 25 35 2 10 1,5 40 13 25 35 2 10 1,75 40 13 30 40 2 10 2,0 Diameter at manufacturers discretion 40
24、13 30 40 2 10 a Tolerances of outside diameter, D, L and L0 shall be the “coarse” class as given in ISO 2768-1. b The type is the segmentation based on the bore diameters. BS ISO 2490:2007 Licensed Copy: London South Bank University, London South Bank University, Wed Jan 02 02:00:02 GMT+00:00 2008,
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