6899 OSI) International Standard INTE RNATIONAL ORGANIZATION FOR STANDARDIZATION MEXAYHAPOAHAR OPrAHW3AuMA IO CTAHAAPTW3AuWWORGANISATION INTE RNATIONALE DE NORMALISATION Acceptance conditions of open front mechanical power presses - Testing of the accuracy Conditions de réception des presses mecaniques a bati en col de cygne -- Controle de la precision First edition -- 1984-05-15 UDC 621.979.63-187 Ref. No. ISO 6899-1984 (E) ISO 6899-1984 Descriptors : machine tools, presses, tests, testing conditions, dimensional measurements, accuracy. Price based on 3 pages Copyright International Organization for Standardization ed without license from IHS Not for Resale Foreword national standards bodies (ISO member bodies). The work of developing International Standards is carried out through Iso technical committees. Every member body interested in a subject for which a technical committee has been authorized has the right to be represented on that committee. International organizations, governmental Draft International Standards adopted by the technical committees are circuiated to the member bodies for approval before their acceptance as International Standards by the ISO Council. International Standard ISO 6899 was developed by Technicail Committee ISO/TC 39, Machine tools, and was circulated to the member bodies in November 1982. Belgium Hungary South Africa, Rep. of Brazil Italy China Korea, Dem. P. Rep. of Sweden Egypt, Arab Rep. of Korea, Rep. of Switzerland France Mexico United Kingdom Germany, F.R. Poland The member bodies of the following countries expressed disapproval of the document on technical grounds : India Japan International Organization for Standardization, 1984 C Printed in Switzertand Copyrihtlinternational Oorganizatin for Standardization letworking permited without license from IHS Not for Resale ISO 6899-1984 (E) INTERNATIONAL STANDARD Acceptance conditions of open front mechanical power s -- Testing of the accuracy presses Scope and field of application is related to the sub-assemblies of the machine; it is not in- tended to impose the practical order in which the tests are to be This International Standard specifies, with reference to carried out. ISO/R 230, geometrical tests for open front mechanical power presses and gives the corresponding permissible tolerances. 2.3 it is not always necessary for all the tests specified in this International Standard to be carried out. The purchaser shall be This International Standard is applicable to machines of general at liberty to select, in agreement with the manufacturer, those purpose use and normal accuracy up to 2 500 kN capacity which is the biggest press standardized in IS0 6898. appropriate tests shall be clearly stated when the machine is ordered however. This International Standard deals only with the checking of accuracy of the machine. it does not apply to the testing of the 2.4 Prior to testing it is necessary to establish that the press running of the machine (vibrations, abnormal noises, stick-slip under test is levelled correctly, that the slide balance, if fitted, is motion of components, etc.) nor to its characteristics (speeds, set in accordance with the manufacturer's instructions, and feeds, deflection under load, etc.) which should generally be that the testing equipment is accurate. checked before testing accuracy. 2.5 When establishing the tolerance for a measuring range different from that given in this International Standard (see 2.311 of ISO/R 230) it should be taken into consideration that 2 Preliminary observations the minimum value of tolerance is 0,01 mm. 2.1 In applying the tests detailed in tables 1 and 2, reference should be made to ISO/R 230, especially concerning the References installation of the machine before testing, warming up of moving parts, the description of measuring methods and the iSO/R 230, Machine tool test code. recommended accuracy of testing equipment. Iso 6898, Open front mechanical power presses -- Capacity rating