2423 (TSO International Standard 1 Acceptance conditions for radial drilling machines with the arm adjustable in height - Testing of accuracy Conditions de reception des machines a percer radiales a bras mobile en hauteur -- Controle de la precision Second edition - 1982-02-01 UDC 621.952.2 - 187 Ref. No. ISO 2423-1982 (E) ISO 2423-1982 (E) Descriptors : machine tools, dilling machines (tools), tests, test conditions, accuracy, verifying. Price based on 9 pages Foreword ISo (the International Organization for Standardization) is a woridwide federation of national standards institutes (IsO member bodies). The work of developing Inter- national Standards is carried out through ISO technical committees. Every member body interested in a subject for which a technical committee has been set up has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with Iso, also take part in the work. Draft Internationai Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. International Standard ISO 2423 was developed by Technical Committee ISO/TC 39, Machine tools. This second edition was submitted directly to the Iso Council, in accordance with clause 5.10.1 of part 1 of the Directives for the technical work of ISo. it cancels and replaces the first edition (i.e. ISO 2423-1974), which had been approved by the member bodies of the following countries : Ireland Sweden Belgium Italy Switzerland Chile Netherlands Thailand Czechoslovakia Poland Turkey Egypt, Arab Rep. of USA France Portugal USSR Germany, F.R. Romania South Africa, Rep. of Hungary The member bodies of the following countries had expressed disapproval of the docu- ment on technical grounds : India Japan United Kingdom @ International Organization for Standardization, 1982 Printed in Switzerland ISO 2423-1982 (E) INTERNATIONAL STANDARD Acceptance conditions for radial drilling machines with the arm adjustable in height - Testing of accuracy Scope and field of application 1 before testing, warming up of spindles and other moving parts, description of measuring methods and recommended accuracy This International Standard describes, with reference to of testing equipment. ISO/R 230, both geometrical and practical tests on general pur- pose and normal accuracy radial drilling machines with the arm The sequence in which the geometrical tests are given is adjustable in height, and gives corresponding permissible 3.3 related to the sub-assemblies of the machine, and this in no deviations which apply. way defines the practical order of testing. In order to make the It deals only with the verification of accuracy of the machine. It mounting of instruments or gauging easier, tests may be ap- does not apply to the testing of the running of the machine plied in any order. (vibrations, abnormal noises, stick-slip motion of components, etc.), or to characteristics (such as speeds, feeds, etc.) which 3.4 When inspecting a machine, it is not always necessary to should generally be checked before testing accuracy. carry out all the tests given in this International Standard. it is up to the user to choose, in agreement with the manufacturer, those tests relating to the properties which are of interest to 2 Reference him, but these tests are to be clearly stated when ordering a machine. ISo/R 230, Machine tool test code. 3.5 When establishing a tolerance for a measuring range dif- 3Preliminary remarks ferent from that given in this International Standard (see clause 2.311 in ISO/R 230), it should be taken into consideration that 3.1 In this International Standard, all the dimensions and per- the minimum value of tolerance is 0,01 mm (0.000 4 in). missible deviations are expressed in millimetres and in inches. 3.6 Unless otherwise specified, geometrical tests are carried 3.2 To apply this International Standard, reference