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ISO 3070-2:2016 pdf free

ISO 3070-2:2016 pdf free.Machine tools一Test conditions for testing the accuracy of boring and milling machines with horizontal spindle
When testing a machine, it is not always necessary or possible to carry out all the tests described in this part of ISO 3070. When the tests are required for acceptance purposes, it is up to the user to choose,in agreement with the supplier/manufacturer, those tests relating to the components and/or the properties of the machine which are of interest. ISO 230-1:2012, Annex A provides valuable information about selection of primary and secondary axes and associated tests. These tests are to be clearly stated when ordering a machine. The mere reference to this part of ISO 3070 for the acceptance tests,without specifying the tests to be carried out or without agreement on the relevant expenses, cannot be considered as binding for any contracting party.
Measuring instruments indicated in the tests described in the following subclauses are examples only. Other instruments capable of measuring the same quantities and having the same, or a smaller,measurement uncertainty can be used. Reference shall be made to ISO 230-1:2012, Clause 5, which indicates the relationship between measurement uncertainties and the tolerances.
Similarly, when a “straightedge” is referred to, it can mean any type of straightness reference artefact,such as a granite or ceramic or steel or cast iron straightedge, one arm of a square, one generating line on a cylinder square, any straight path on a reference cube, or a special, dedicated artefact manufactured
to fit in the T-slots or other references.
In the same way, when a “square” is mentioned, it can mean any type of squareness reference artefact,such as a granite or ceramic or steel or cast iron square, a cylinder square, a reference cube, or, again, a special, dedicated artefact.
When“3D probe” is referred to, it means three displacement sensors, housed in a nest, used to measure the changes in the position of the centre of a precision sphere; when the nest and the sphere are moved together along a programmed tool path.
When built-in software facilities are available for compensating geometric, positioning, contouring and thermal deviations, their use during these tests should be based on agreement between manufacturer/supplier and user, with due consideration to the machine tool intended use, e.g. if the intended use of the machine tool is with or without software compensation for geometric errors. When the software compensation is used, this shall be stated in the test report.ISO 3070-2 pdf download.

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