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  • BSI
    BS 4656-28:1988 Accuracy of machine tools and methods of test - Specification for numerically controlled turning machines up to and including 1500 mm turning diameter
    Edition: 1988
    $411.69
    / user per year

Description of BS 4656-28:1988 1988

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.



Geometrical and practical tests with corresponding permissible deviations. Reference should be made to BS 3800 in applying the tests.

Standard NumberBS 4656-28:1988
TitleAccuracy of machine tools and methods of test - Specification for numerically controlled turning machines up to and including 1500 mm turning diameter
StatusUnder Review
Publication Date1988-08-31
ReplacesBS 4656-28:1981
DescriptorsSlideways, Diameter, Dimensions, Testing conditions, Mandrels, Accuracy, Position, Machining tolerances, Numerical control, Work-holding devices, Turning, Tolerances (measurement), Tool-holding devices, Single-point cutting tools, Machine tools, Lathes, Spindle noses, Form tolerances, Reproducibility, Threading tools, Turning tools, Test equipment, Test specimens, Dimensional tolerances, Turret lathes, Mechanical tolerances, Cutting tools, Machine tool components, Parallel, Chucks, Verification, Spindles
ICS25.040.20 Numerically controlled machines, 25.080.10 Lathes
CommitteeMTE/1/2
ISBN0 580 16661 9
PublisherBSI
Pages26

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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