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  • BSI
    BS 4656-2:1988 Accuracy of machine tools and methods of test - Specification for copying lathes and copying attachments
    Edition: 1988
    $266.02
    / user per year

Description of BS 4656-2:1988 1988

This Part of BS 4656 specifies, with reference to BS 3800, both geometrical and practical tests for copying lathes and centre lathes of general purpose type with copying attachments.

The tests in this standard are supplementary to those (except precision category) in BS 4656-1.

This standard is applicable to machines of general purpose use and normal accuracy.

It applies to hydraulic and electric servo-controlled copying attachments but not to mechanically-controlled ones.

It applies to lathes with single-axis copying systems and to lathes where two axes are used in conjunction to produce a profile of up to 180° included angle. It also applies to capstan and combination turret lathes and vertical boring machines equipped with copying attachments.

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 generally be checked before testing accuracy.

This standard does not apply to turning machines equipped with two-axis systems of more than 180° capability which are considered as special-purpose machines, nor does it apply to single- or multi-spindle automatic lathes fitted with a copying attachment.

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.



Accuracy requirements and geometrical and practical tests with reference to BS 3800.

Standard NumberBS 4656-2:1988
TitleAccuracy of machine tools and methods of test - Specification for copying lathes and copying attachments
StatusUnder Review
Publication Date1988-12-30
ReplacesBS 4656-2:1982
Related National Standard OfISO 8956
DescriptorsAccuracy, Lathes, Dimensions, Machine tools, Machines working by stock removal, Machining tolerances, Shafts (rotating), Centre lathes, Verification, Dimensional tolerances, Sensitivity, Test specimens, Facing tools, Machine tool components, Copying lathes, Chucks, Tolerances of position
ICS25.080.10 Lathes
CommitteeMTE/1/2
ISBN0 580 16997 9
PublisherBSI
Pages14

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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