{"id":266183,"date":"2024-10-19T17:45:45","date_gmt":"2024-10-19T17:45:45","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-4656-21988\/"},"modified":"2024-10-25T13:46:18","modified_gmt":"2024-10-25T13:46:18","slug":"bs-4656-21988","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-4656-21988\/","title":{"rendered":"BS 4656-2:1988"},"content":{"rendered":"

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.<\/p>\n

The tests in this standard are supplementary to those (except precision category) in BS 4656-1.<\/p>\n

This standard is applicable to machines of general purpose use and normal accuracy.<\/p>\n

It applies to hydraulic and electric servo-controlled copying attachments but not to mechanically-controlled ones.<\/p>\n

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\u00b0 included angle. It also applies to capstan and combination turret lathes and vertical boring machines equipped with copying attachments.<\/p>\n

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.<\/p>\n

This standard does not apply to turning machines equipped with two-axis systems of more than 180\u00b0 capability which are considered as special-purpose machines, nor does it apply to single- or multi-spindle automatic lathes fitted with a copying attachment.<\/p>\n

\n

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.<\/p>\n<\/blockquote>\n

Accuracy requirements and geometrical and practical tests with reference to BS 3800.<\/p>\n","protected":false},"excerpt":{"rendered":"

Accuracy of machine tools and methods of test – Specification for copying lathes and copying attachments<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n1988<\/td>\n14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":266188,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[394,2641],"product_tag":[],"class_list":{"0":"post-266183","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-25-080-10","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/266183","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/266188"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=266183"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=266183"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=266183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}