| The economical monitoring solution PROSIN enables tool monitoring by reading the electrical current values of the various digital machine tool drives. If a tool breaks, the current value for the corresponding drive will change, with the current increasing for a dull tool. The benefits include eliminating additional sensors and cost savings over full-blown monitoring electronics. The possibilities are inexhaustible, particularly when retrofitting existing machines.
A special monitor screen is provided for configuring the NC program operations to be monitored, with this screen integrated into the standard user interface of the CNC. This screen (see screenshot below) allows you to enter and optimize the settings for the cuts to be monitored on one or more tools, and to display the actually measured values.The first workpiece in a machining lot is used for the so-called teach-in – determining the reference signal for a sharpened tool. The operator himself decides what response results from a delayed, deviating behavior: Generating a simple message or immediate stopping of the machine. <read on below> |
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SIEMENS-certified solution
With PROSIN, fluted drills 2mm in diameter and larger can be monitored for breakage when used with steel, cast iron or aluminum. The actual current values are read out in the interpolation cycle of the controller. Typical values in this context will range from 8 to 12 milliseconds. As part of the SINUMERIK Solution Provider Program, SIEMENS certified PROSIN drill break detection software in August 2001.
The limits of the software-based monitoring solution are defined by the intended use: If you need to detect collisions or reliably monitor rotating tools for breakage, the special customized sensors in PROMOS 2 will be required.
This tool monitoring package is of particular interest for mass production of metal parts, such as in the automotive supplier industry, where quality needs to be increased while at the same time reducing costs. A further benefit lies in how easy it is to retrofit existing machines, whose functionality can be expanded in a very short time. |
