BS 978-5:1965
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for fine pitch gears Hobs and cutters
Hardcopy , PDF
01-12-2005
English
22-11-1965
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Foreword
Specification
Section 1. Hobs for fine pitch gears
1.1 Scope
1.2 Terminology
1.3 Tooth form
1.4 Gashes
1.5 Bores
1.6 Dimensions
1.7 Tolerances
1.8 Marking
1.9 Purchasing recommendations
Section 2. Rotary form-relieved gear cutters for fine
pitch gears
2.1 Scope
2.2 Terminology
2.3 Tooth form
2.4 Cutter groups
2.5 Dimensions
2.6 Tolerances
2.7 Circumferential form relief
2.8 Arbor tolerances
2.9 Marking
2.10 Purchasing recommendation
Section 3. Pinion type cutters for fine pitch gears
3.1 Scope
3.2 Terminology
3.3 Tooth form
3.4 Dimensions
3.5 Cutting rake
3.6 Bore
3.7 Provision of datum cylinder
3.8 Tolerances
3.9 Marking
3.10 Purchasing recommendations
Appendices
A Marking code for cutters for fine pitch gears
B Basic rack tooth profiles (B.S. 978, Part 1)
C Basic rack tooth profile (gear and cutter) B.S.
978, Part 2 addendum No. 1
Tables
1 General dimensions of hobs
2 Tolerances
3 General dimensions of rotary form-relieved cutters
4 Unit pitch dimensions of cutter profiles for
involute teeth to Figs. 1 and 2 of B.S. 978, Part
1
5 Tolerances
6 Disc type gear cutter dimensions
7 Extended hub gear cutter dimensions
8 Screwed hub gear cutter dimensions
9 Parallel shank gear cutter dimensions
10 Taper shank gear cutter dimensions
11 Tolerances
Form, dimensions, accuracy of ranges of gear hobs, rotary form-relieved gear cutters, pinion type gear cutters for fine pitch gears to BS 978:Parts 1 and 2.
| Committee |
MCE/5
|
| DocumentType |
Standard
|
| Pages |
30
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| Standards | Relationship |
| UNE-EN 527-2:2017+A1:2019 | Identical |
| UNE-EN ISO 21420:2020 | Identical |
| BS 4582-2:1978 | Specification for fine pitch gears (metric module) Hobs and cutters |
| BS 978-1:1968 | Specification for fine pitch gears. Involute spur and helical gears |
| BS 2062-1:1959 | Specification for gear hobs Hobs for general purposes, 1 d.p. to 20 d.p. inclusive |
| BS 2887(1957) : LATEST | PINION TYPE CUTTERS FOR SPUR GEARS 4 D.P. TO 20 D.P. |
| BS 978-3:1952 | Specification for fine pitch gears Bevel gears |
| BS 2518-1:1954 | Specification for rotary form relieved gear cutters Diametral pitch |
| BS 2518-2:1977 | Specification for rotary form relieved gear cutters Metric module |
| BS 2519-1(1969) : LATEST | |
| BS 978-2:1952 | Specification for fine pitch gears Cycloidal type gears |
| BS 2519-2:1976 | Glossary for gears Notation |
| BS 978-1:1968 | Specification for fine pitch gears. Involute spur and helical gears |
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