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To See Machining Reality on a Tablet

Viewing the simulation of a live machining process in real time gives clear picture of what is happening at the moment inside the machine tool as it runs an NC program. SPRING Technologies’ NCSIMUL Player Synchro makes this happen on a wireless mobile tablet with an app called WYSIWYC.

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One of the distinguishing aspects of the CNC programming aids from SPRING Technologies (U.S. offices in Cambridge, Massachusetts) is advanced use of 3D simulation of machining processes, which the company has taken in several new directions. One of the most interesting of these developments is a mobile application called WYSIWYC (what you see is what you cut) that puts its NCSIMUL Player Synchro on a tablet PC designed to withstand a harsh environment.

Synchro is based on the company’s simulation viewer, NCSIMUL Player, which enables users to analyze, manipulate and display NC programs and machining simulations generated by NCSIMUL Machine, the company’s advanced 3D machining simulation capability. These simulations include machine kinematics and parameters in the machining context.

Player Synchro provides a way to view the simulation of a live machining process in real time; in other words, the display of the simulated machining process is synchronized with what is happening at the moment inside the machine tool as it runs an NC program. For example, when the display shows a cutter milling the surface of an impeller blade in five axes, the actual cutting tool inside the machine is also contacting the workpiece in the same operation and orientation at the same instant. This approach enables the viewer to watch the machining process in progress without coolant spray or ricocheting metal chips to block the view. Machining operations and cutting conditions can be seen more clearly and accurately as a result.

WYSIWYC takes this concept one step further by embedding this live, synchronized simulation capability on a tablet PC. The tablet of choice for this solution is the Panasonic Toughpad FZ-G1 because this device is designed for the harsh environments often encountered on the shop floor. This tablet-based solution is portable—it connects wirelessly to the shop network for viewing. The touchscreen user interface offers multitouch gesturing to control image size and other display characteristics. In addition to simulations, instruction sheets and work-sheets are accessible directly from the mobile application.

The tablet solution also enhances the capability of the Synchro application for multi-machine supervision. With this capability, the user can access multiple displays to monitor and attend to several machines from one viewing station, thereby reducing the concern that any event requiring immediate attention will be overlooked while tending to a contingency on another machine. To be accessible, machines must be logged onto the network and have simulations available in NCSIMUL Machine. The portability of the tablet enables the user to move about the shop floor at will, yet never be out of touch with immediate observation of the machines under that user’s watch. Because the 3D machining simulations are said to be highly realistic and accurate renderings of machine axes, spindles and cutting tools, the tablet is a virtual window into any and all of the assigned machines.

The latest enhancements to Synchro, which also extend to the mobile application, include anti-collision “radar” and adaptive timers. The radar feature provides a dynamic display of available travel in each axis when jogging the machine into position in the manual mode. This makes potential collisions easy to detect visually even when the line of sight is blocked with normal, eyes-on viewing. It also provides added security when running in the auto mode. The adaptive timers are displayable reports that show up-to-the-moment summaries of machine downtime, tool changes, end of program, part cycle times and other machine activity in a dashboard-like format. This creates an opportunity to identify operational factors that can be improved to increase productivity and utilization.

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