The working range of a CNC machining center indicates the maximum workpiece size which can be processed. Depending on the manufacturer and the chosen variant it can come to very different values:
Because there are so many ways to give a working range of a CNC machining centre, today in their brochures manufacturers show the different types of working ranges with dimensioned drawings.
Dependence of the work area on the tool
One problem is the dependence of the working range of the different tool types used.
For the axes X and Y this usually is not so important, because the working area varies just corresponding to the differences in tool diameter. Only in special cases, such as the use of tenoning tools for windows, this has a significant influence on the usable working range.
For the z-axis, however, the tool length is crucial. Since here the differences between individual tools are much larger, the usable range will vary a lot more. So the risk of collisions with machine parts (e.g. from improper programming or using the wrong tool) is much higher. Especially matrix tables or suction cups could be damaged by this.
Most manufacturers therefore use passage height as Z working range.