BS ISO 2772:2019 pdf download – Test conditions for box type vertical drilling machines — Testing of the accuracy
This document specifies, with reference to ISO 230-1, geometrical tests on general purpose and normal accuracy box type vertical drilling machines. It also specifies the applicable tolerances corresponding to the above-mentioned tests. This document deals only with the verification of accuracy of the machine. It does not apply to the testing of the machine operation (vibrations, abnormal noises, stick-slip motion of components, etc.) or to machine characteristics (such as speeds, feeds, etc.), which are generally checked before testing of machine accuracy.
2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 230-1:2012, Test code for machine tools — Part 1: Geometric accuracy of machines operating under no-load or quasi-static conditions
ISO/TR 230-11:2018, Test code for machine tools — Part 11: Measuring instruments suitable for machine tool geometry tests
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 230-1 and the following apply.
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3.1 drilling producing holes in cold metal by the use of a rotating cutting tool
3.2 drilling machine machine designed to produce holes in cold metal by the use of a rotating cutting tool [SOURCE: EN 12717:2009, 3.1]
3.3 manual drilling machine machine designed to produce holes in cold metal by the use of a rotating cutting tool where the axial motion of the cutting tool is controlled through the actuation of a handwheel or lever Note 1 to entry: The handwheel or lever can include powered axial feed or powered unprogrammed positioning of spindle or workpiece.
5.2 Reference to ISo 230-1 and lso/TR 230-11
To apply this document, reference shall be made to lSo 230-1, especially for the installation of themachine before testing, the warming up of spindles and other moving components,description ofmeasuring methods and recommended accuracy of the test equipment.
Where the test concerned is in compliance with the specifications of lSO 230-1, a reference to thecorresponding subclause of lSo 230-i is shown before the instructions in the “Observations” block ofthe tests described in Clauses 5 and 6.
5.3Testing sequence
The sequence in which the tests are presented in this document in no way defines the practical orderof testing. In order to make the mounting of instruments or gauging easier, tests may be performed inany order.
5.4Test to be performed
When testing a machine, it is not always necessary or possible to carry out all the tests described inthis document. When the tests are required for acceptance purposes, it is up to the user to choose, inagreement with the supplier/manufacturer, the relevant tests relating to the components and/or theproperties of the machine which are of interest. These tests are to be clearly stated when ordering amachine.A simple reference to this document for the acceptance tests, without specifying the tests tobe carried out or without agreement on the relevant expenses, cannot be considered as an agreementbetween manufacturerfsupplier and user.
5.5 Measuring instruments
Measuring instruments indicated in the tests described below are only examples.Other instrumentscapable of measuring the same quantities and having the same, or a smaller, measurement uncertaintymay be used.Reference shall be made to lS0 230-1:2012,Clause 5, which indicates the relationshipbetween measurement uncertainties and the tolerances.
5.6Minimum tolerance
When establishing the tolerance for a measuring length different from that given in this document(see lS0 230-1:2012,4.1), it shall be taken into consideration that the minimum value of tolerance is0,010 mm.
Prior to conducting tests on a box type vertical drilling machine, the machine should be levelledaccording to the recommendations of the manufacturer/supplier (see IS0 230-1:2012,6.1.2).
BS ISO 2772 pdf download.