ISO 2433 pdf download.Machine tools — Test conditions for external cylindrical and universal grinding machines with a movable table — Testing of the accuracy
1 Scope
This International Standard describes, with reference to ISO 230-1 and ISO 230-2, geometric tests, machining tests and tests for accuracy and repeatability of positioning axes on general purpose and normal-accuracy external cylindrical and universal grinding machines with a movable table. It also specifies the applicable tolerances corresponding to the above-mentioned tests. This International Standard applies to machines with a swing diameter of up to 800 mm and a distance between centres of up to 4 000 mm. This International Standard deals only with the verification of the accuracy of the machine. It does not apply to testing the running of the machine (vibration, abnormal noise, stick-slip motion of components, etc.) nor to machine characteristics (such as speeds, feeds, etc.), which should generally be checked before the testing of machine accuracy. This International Standard provides the terminology used for the principal components of the machine and the designation of the axes with reference to ISO 841 . NOTE In addition to terms used in two of the three official ISO languages (English and French), this International Standard gives in annex A (informative) the equivalent terms in German and Italian; these terms are published under the responsibility of the member bodies for Germany (DIN) and Italy (UNI). However, only the terms given in the official languages can be considered as ISO terms.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 230-1 :1 996, Test code for machine tools — Part 1 : Geometric accuracy of machines operating under no-load or finishing conditions. ISO 230-2:1 997, Test code for machine tools — Part 2: Determination of accuracy and repeatability of positioning of numerically controlled axes.
3 Description, terminology, and designation of axes
3.1 Description of machines 3.1.1 Generalities This International Standard deals with both external cylindrical grinding machines and universal grinding machines with movable tables. Although the constructions of both machines are very similar, the machine functions are different. The universal grinding machine can grind external and internal, cylindrical and conical surfaces. Whereas the external cylindrical grinding machine can grind only the external cylindrical surfaces and, in some cases, the external conical surfaces. Both machines have two principal linear movements of the table (Z-axis) and the wheelhead (X-axis) on the bed. These movements are generally at right angles. In some machines, these two movements cross with an oblique angle and are called angular-slide cylindrical grinding machines. The main components of external cylindrical and universal grinding machines are described below: 3.1.2 Bed The bed has separate slideways for the table and grinding wheelhead which are generally at 90? to each other. 3.1.3 Table saddle The table saddle supports the table and moves on the bed slideway (Z-axis). 3.1.4 Table The workhead, tailstock and, when necessary, steady rests are mounted on the table. The workpiece is supported between the workhead spindle and tailstock spindle. The table can swivel on the table saddle in the case of a universal grinding machine; but in the case of the external cylindrical grinding machine, swivelling is not an essential function. When there is no need for swivelling, the table and table saddle may be constructed as one unit.