Rifling process is used to produce rifle grooves into barrels. This process is very specialized and one of the most critical process for producing a rifled barrel. We provide thre different processes; Button Rifling Machines, Broach Rifling Machines and Cut Rifling Machines by Precihole. Button Rifling Machines incorporates the latest features to form precision grooves in small caliber weapon systems. Broach rifling for large caliber weapon systems, creates spiral grooves in the barrel by removing steel using a hook cutter. Cut Rifling Machines (also known as Single Point Cut Rifling) cut spiral grooves in the barrel by machining steel using a hook cutter.

Precihole BRVN Series

Button Rifling

Button Rifling Machines incorporates the latest features to form precision grooves in small caliber weapon systems. The rifling button is pulled and rotated precisely through the barrel. Precision in rifling is critical. The machine uses anti­ backlash helical guides and rotary encoder to interpolate linear and rotary motion. This produces rifling twists exactly as needed by the rifling tool. Machine features include load monitoring that graphs the rifling pull load on the HMI. Operator can monitor the rifling operation on screen, output to printer orflash disk if required.

Precihole BRM Series

Broach Rifling Machine

Broach rifling machine for large caliber weapon systems. Broach rifling creates spiral grooves in the barrel by removing steel using a hook cutter. The linear and rotary motion of the hook cutter are precision controlled for accuracy using a servo drive and ball screw or rack and pinion mechanism. The broach cutters are progressive in size and each cutter cuts a size slightly bigger than the previous one. The fine filtration system on the machine ensures that the system gets coolant at requires rates and the swarf is evacuated properly from the barrel.

Precihole CRVN Series

Cut Rifling

Cut rifling is a single point rifling system in which the cutter is pulled through the barrel and rotated at predetermined rates to give the necessary rifling twist. A passing cut is made down each groove sequentially and each cut removes only about 0.002 mm from the groove depth. This method does not induce any stress in the barrel. Hence the barrel does not need to be stress relieved before profiling and chambering. All high precision and sniper weapon systems use cut rifled barrels. They are considered more accurate and precise compared to other rifling methods.