IS 2063 : Part 12 : 2024/ISO 230-12 : 2022 Machine Tools - Test Code - Part 12 Accuracy of Finished Test Pieces
NATIONAL FOREWORD
This Indian Standard (Part 12) which is identical to ISO 230-12 'Test code for machine tools - Part 12: Accuracy of finished test pieces' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Machine Tools, Machine Tool Elements and Holding Devices Sectional Committee and approval of the Production and General Engineering Division Council.
The purpose of IS 2063/ISO 230 series of standards is to standardize methods of testing the accuracy of machine tools, excluding portable power tools. When a machine tool is used to repeatedly machine a single test piece in a mass production line, some machine tool users want to test cut that single test piece and check its geometric accuracy, as a part of acceptance tests for a machine tool. This standard specifies a set of machining tests that can be used to assess the influence of various quasi-static error motions of a machine tool. This standard is intended to suggest minimum requirements for assessing the finish-cutting accuracy of the machine.
For machines, machining multiple types of test pieces, standard test pieces should be used. Standard test pieces are defined in machine-specific Indian Standards. In some machine-specific Indian Standards, recent machining applications are not fully covered. For example, five-axis machining centres can perform turning operations by using a rotary table. The machine-specific Indian Standard for a machining centre, IS 15250 (Part 7)/ISO 10791-7, describes no machining test for turning operation. Turning tests are included in IS/ISO 13041-5. This standard describes a family of machining tests that covers potential applications of various types of machine tools.
In general, machining tests described in machine-specific international standards, influenced by multiple causes, are not intended to identify individual error sources contributing to the measured errors of the machined test pieces. In contrast, tests for identifying quasi-static error motions described in IS 2063 (Part 1)/ ISO 230-1 are designed to identify individual error sources for each motion axis. This standard provides test pieces for machining tests to isolate certain error sources and allow manufacturers/users to pick those corresponding to their intended machining applications.
The tests described in this standard can be used either for testing different types of machine tools (type testing) or testing individual machine tools for acceptance purposes.
This standard has been published in 11 parts. Other parts in this series are:
Part 1 Geometric accuracy of machines operating under no-load or quasistatic conditions
Part 2 Determination of accuracy and repeatability of positioning of numerically controlled axes
Part 3 Determination of thermal effects
Part 4 Circular tests for numerically controlled machine tools
Part 5 Determination of the noise emission
Part 6 Determination of positioning accuracy on body and face diagonals (Diagonal displacement tests)
Part 7 Geometric accuracy of axes of rotation
Part 8 Vibrations
Part 9 Estimation of measurement uncertainty for machine tool tests according to series ISO 230, basic equations
Part 10 Determination of the measuring performance of probing systems of numerically controlled machine tools
The text of ISO standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:
a) Wherever the words 'International Standard' appear referring to this standard, they should be read as 'Indian Standard'; and
b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.