without labor-intensive hand lapping. A typical 600-grit abrasive can produce a 6–10 µin. Ra
(0.15–0.25 µm) fi nish
in a reamed barrel blank. By producing a consistent bore di- ameter of ±0.0001" (0.003 mm or less), parallelism, round- ness, and surface fi nish end-to-end, honing yields more consistent perfor- mance from rifl ing buttons and cutters, resulting in a constant groove depth. The ideal bore geometry reduces dis- tortion of the bullet shape for improved gyroscopic stability in fl ight.
carbide rifl ing buttons and can provide different rifl ing styles, including polygonal, per the customer’s choice. A button is attached to a rod and the rod is pulled through the barrel. The company’s hydraulic rifl ing machine utilizes a CNC machined
It’s all about Precision, Productivity, and Profit.
One solution, fully integrated, from one company. Visit us at IMTS and let us show you how.
TRUNNION Maverick McCourt prepares to install a
rifl e barrel on a receiver using Pac-Nor’s barrel press.
“We are currently honing about 80% of what we make and will do more as we acquire the tools in different cali- bers,” said Dichter. “We have learned the quality of our reaming now does not need to be as critical because we have the hone. Although there is a tradeoff in cycle time and abrasive cost for addi- tional honing, we are still able to run our reamers two to three times longer than when we lapped alone. With a hand lap, the time and effort increase when the reamer is getting dull.” After honing, the barrel is inspected again before rifl ing with a pull-button. Pac-Nor makes its own Accu-Twist
Witzig & Frank by Hydromat is a leading brand for modular machine concepts and turnkey systems for metal cutting and IRUPLQJ DSSOLFDWLRQV 7KH /6$ is a multi-way production cell with horizontal indexing axis IRU VLGHG PDFKLQLQJ LQ RQH FODPSLQJ ,W IHDWXUHV WR stations with horizontal and UDGLDO XQLWV $GMXVWDEOH DQG pivotable, they easily adapt to changing workpiece shapes.
WITZIG & FRANK by WITZIG & FRANK
EPIC ROTARY TRANSFER
When it comes to multi- tasking, Hydromat is without peer. Whether it’s for lower volume production needs, improved design for tighter tolerances, high volumes, or tooling development for tougher materials, we have delivered better solutions to our customers for decades. Hydromat’s EPIC is the most efficient rotary transfer production system available. Bar none.
MILL/TURN
Designed with four machining stations and two dedicated loading/unloading stations, the ICON was developed around flexible machining principles. Equipped with a six position table, it shuttles pallets to four machining modules for fast, ultra-precision cutting. Engineered for maximum output in a small footprint, the ,&21
WKH XOWLPDWH LQ productivity and flexibility.
+\GURPDW ,QF • S
www.hydromat.com $GLH 5RDG • 6W /RXLV 02
• I
July 2016 |
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