Measuring cycles
Example: Measuring a shaft
Measuring functions can execute either channel-specifically including all axes programmed in the measuring set as well as axially from the part program or from synchronous actions beyond NC block limits.
Measuring cycles are subroutines for solving specific measuring tasks. They are easy to use by entering values for predefined parameters. A general distinction is made between tool measurement and workpiece measurement. For this purpose, we provide you with a complete range of measuring cycles.
With the advantages of the SINUMERIK measurement functions and measuring cycles, you ensure machining accuracy, shorten idle times, and eliminate sources of faults, thus making a significant contribution to further automation of the manufacturing process.
Measuring cycles
Example: 2-angle measurement for determining the position of a plane in space
In the case of tool measuring, the loaded tool (typically in the revolver on turning machines) is moved toward the probe which is either in a fixed position or swiveled into the working range by a mechanical device. The automatically derived tool geometry is entered in the relevant tool offset data record.
In the case of workpiece measuring, a probe is moved towards the clamped workpiece like a tool. The flexible selection of measuring cycles means that you can handle practically every measuring task associated with turning or milling.
The principle of "on-the-fly measurement" is used in SINUMERIK controls. The advantage of this principle is that the probe signal is processed directly in the CNC. The measuring parameters and the results of the measurements are output extremely clearly in separate screen forms which are either automatically deselected at the end of the cycle, or can be acknowledged when starting the CNC.
The result of the workpiece measurement can either include automatic offset of the zero point or a correction of the tool wear by the difference between the actual value and the setpoint. The measured results can be logged in a file. The Siemens measuring cycles offer a standard log which you can also adapt.
In order to measure tool and workpiece dimensions, a touch-trigger probe is required that supplies a constant signal (rather than a pulse) when deflected. The probe should switch bounce-free, and mechanical adjustment may be necessary.
Multidirectional probes can be used for all tool and workpiece measurements on turning and milling machines. Bidirectional probes are treated like a mono probe for workpiece measurements on milling and machining centers, but are not suitable for tool measurements.
Monodirectional probes can be used on milling machines and machining centers with slight restrictions in workpiece measurements, but are not suitable for tool measurements or for workpiece measurements on turning machines.
We offer:
General (channel-specific) measuring functions are included as standard in the basic version of the SINUMERIK 840Di sl/840D sl CNC controls.
Axial measuring, measuring from synchronous actions and continuous measuring can be implemented as options with Measuring stage 2.
With SINUMERIK 840Di sl/840D sl, the measuring cycles are included in the NCU system software with HMI-Embedded and in the HMI-Advanced user interface software and can be used as an option with measuring cycles.
