(DP Technology Corp., Camarillo, CA) -- New technology for computer-aided manufacturing (CAM) has been introduced by ESPRIT CAM, part of Hexagon’s Manufacturing Intelligence Division that provides manufacturers with the control and flexibility needed to use multispindle and multichannel computer numerical control (CNC) machinery for the machining of long parts. More accurate simulation of spindle transfers and bar pulls enables manufacturers to exploit multitasking machinery with high productivity program creation of error-free tool paths. 

Machining long parts, such as shafts and axles, is challenging because they require that the workpiece is supported throughout to maintain cutting speed and surface quality. The main and sub spindles must be synchronized to ensure that cutting can be performed while both spindles hold the workpiece for maximum support. Bars are also frequently repositioned in incremental steps to keep workpieces rigid, as well as to account for limited bed length. Because the repeat repositioning of the bar presents a collision risk, it benefits machinists if they are supplied with NC code that tracks machine motion for greater flexibility and readability at the machine control.

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