C.R.Onsrud 72/96/120 series machines
Smooth, precision, multi-axis performance with automated tool changing
C. R. Onsrud design and supply a range of automatic tool changing,
high productivity, 3 axis CNC moving table and moving gantry routers controlled by NEE
AMC4’s or AMC B’s.
C. R. Onsrud moving table machines have two side by side tables that can be electronically locked
together to form one large table, or run independently, one table routing and the other being loaded and
unloaded, this achieves 100% machine productivity.
The features required of the controller by C. R Onsrud include high machine speeds of up to 3600 inches
per minute, high part accuracy under all cutting conditions, and extremely smooth motion providing parts
with the best surface finish possible. Unique servo algorithms
developed by NEE Controls Ltd provide these features.
NEE were able to assist C. R. Onsrud in their pursuit of perfect cutting finishes on clear acrylic
sheet. NEE’s engineers, with the aid of powerful NEE multi-axis machine tuning
software, were able to significantly enhance the cut quality by replacing resolver commutated motors
and drives with encoder commutated motors and drives and by tuning the complete system.
NEE AMC controllers have a number of selectable user options developed for C. R. Onsrud which further
enhance the machine’s capability, flexibility and productivity.
Part programs are usually generated in ISO GM code using MasterCAM.
C. R. Onsrud have tried alternative controllers from Delta Tau and Fanuc, they chose to use the NEE AMC
range because of:
- High control system performance
- Control system features and flexibility
- Ease of integration
- Very competitive control system cost
- NEE’s willingness to develop custom features
- The controls accept ISO G and M code job data
C.R. Onsrud Gantry machines
C. R. Onrud’s moving gantry machines can be fitted with multi-tool drilling heads and a rotary tool
changer. Multi-tool heads can have up to 48 independently selectable drills. In this application the AMC
standard I/O of 20 inputs and 12 outputs is extended by using a remotely located OMRON PLC fitted near the
tool head solenoids dramatically reducing system cabling.
Control and monitoring of the OMRON PLC is automatically performed by the AMC via an additional RS232 port.