BS ISO 230-10:2016 pdf free

BS ISO 230-10:2016 pdf free.Test code for machine tools – Determination of the measuring performance of probing systems of numerically controlled machine tools
According to ISO 1, the reference temperature for industrial dimensional measurements is 20°C;therefore, the measuring instruments and the measured objects should be in equilibrium with the environment where the temperature is kept at 20 °C. If the environment is at a temperature other than 20 °C, nominal differential thermal expansion (NDE) correction between the measurement system and the measured object shall be made to correct the results to correspond to 20 °C. Built-in NDE correction,used for the normal operation of the machine tool, shall be used; additional NDE correction, just for the measurements, shall not be used to correct the thermal distortions of machine position transducers.
If the probing system is applied just after machining operations or between machining operations, the effects of cooling of the machine tool, especially the machine tool spindle, shall be considered. In such cases, a temperature variation error test shall be carried out after warming up of the main spindle and/or machine tool axes, e.g. by performing movements of a typical machining operation prior to measurements. The machine tool movements that shall be performed (for instance spindle speed,duration of movement, movement of axes, feed speeds) for the temperature variation error test are subject to agreement between the manufacturer/supplier and user and shall consider the typical operations of the machine tool.
Individual performance tests in Clauses 6 and 7 may be carried out after performing typical movements corresponding to machining operations, which are subject to agreement between the manufacturer/ supplier and user.
Probes used on machining centres for the probing of workpiece are typically connected to the machine tool spindle. For many probing applications, the centre of the stylus tip should be located on the spindle axis average line in order to allow for proper identification of the workpiece coordinate system (WCS) with respect to the machine coordinate system (MCS). In other typical applications (for example:measurement of the distance between two nominally parallel machined surfaces, measurement of the diameter of a hole or a boss, etc.), where the alignment of the stylus tip to the spindle axis average line is not of primary concern, care should be taken to ensure that the spindle orientation with respect to the MCS does not change during subsequent probing in order to avoid the stylus tip offset becoming a significant component of probing error.BS ISO 230-10 pdf free.