BS 4656-28:1988
Current
The latest, up-to-date edition.
Accuracy of machine tools and methods of test Specification for numerically controlled turning machines up to and including 1500 mm turning diameter
Hardcopy , PDF
English
31-08-1988
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Foreword
Committees responsible
Specification
1. Scope
2. Definitions
3. Application of test methods
4. Abbreviations
5. Diagrams
6. Machine size ranges
Tables
1. Geometrical tests for numerically controlled turning
machines
2. Practical tests for numerically controlled turning
machines
Figures
1. Test piece for test P4: between centres machines
2. Test piece for test P4: chucking machines
3. Test piece for tests G18 and P5
Geometrical and practical tests with corresponding permissible deviations. Reference should be made to BS 3800 in applying the tests.
| Committee |
MTE/1/2
|
| DevelopmentNote |
Supersedes 87/74259 DC, 90/72242 DC and BS 4656-28(1981) (08/2005) Reviewed and confirmed by BSI, October 2012. (09/2012)
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This Part of BS 4656 specifies, with reference to BS 3800, both geometrical and practical tests for numerically controlled turning machines up to and including 1 500 mm turning diameter over the bed, and gives corresponding permissible deviations which apply.
This standard is applicable to machines of general purpose use and normal accuracy.
It deals only with the verification of accuracy of the machine. It does not apply to the testing of the running of the machine (vibrations, abnormal noises, stick-slip motion of components, etc.) nor to its characteristics (speeds, feeds, etc.) which should be generally checked before testing accuracy. This standard does not apply to sequence controlled lathes, such as those with plug-boards or decade switches.
NOTE The titles of the publications referred to in this standard are listed on the inside back cover.
| BS 308-3:1972 | Engineering drawing practice. Geometrical tolerancing |
| BS 3800:1964 | Methods for testing the accuracy of machine tools |
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