Finishing

Jet-engine manufacturing typically requires through-holes that accommodate fasteners for various components and subassemblies. These through-holes must be chamfered, free of burrs and have radiused edge transitions.

Machining a clean, straight and in-tolerance hole through a part is not the only requirement for many holemaking applications. In many cases, hole entrances and exits are also critical to part functionality.

END USER: RCBS, (800) 533-5000, www.rcbs.com. CHALLENGE: Automate ID finishing of ammunition reloading dies. SOLUTION: Flexible brush hones on CNC equipment that improved quality and throughput while eliminating operator injury and fatigue. SOLUTION PROVIDER: Brush Research Manufacturing Co. Inc., (323) 261-2193, www.brushresearch.com

Mass finishing parts at the machining center offers economic advantages.

END USER: Form Tool Technology Inc., (803) 788-3686, www.formtooltech.com. CHALLENGE: Polish flutes of drills and other round tools to enhance chip evacuation. SOLUTION: Diamond-abrasive polishing wheels. SOLUTION PROVIDER: 3M Abrasive Systems Div., (866) 279-1288, ext. 1258, www.3m.com

END USER: Tech NH Inc., (603) 424-4404, www.technh.com. CHALLENGE: Reduce polishing time when producing hardened steel molds. SOLUTION: Long-reach, small-diameter endmills for hard milling. SOLUTION PROVIDERS: Harvey Tool Co. LLC, (800) 645-5609, www.harveytool.com; Industrial Tool Supply, (888) 200-8887, www.itslowell.com.

When applying finishes to parts, shops have a key choice: outsource or DIY.

A heat-treat process to anneal and bright age-harden stainless steels without breaking vacuum.

END USER: Acumed LLC, (888) 627-9957, www.acumed.net. CHALLENGE: Accurately direct high-pressure coolant on Swiss-style machines to control chips when turning. SOLUTION: A Swiss-style insert holder with high-pressure, through-coolant capability. SOLUTION PROVIDER: Streamliner & Associates Inc., (814) 440-1548, www.streamlinertools.com

Where there are drilled holes, there are burrs. The only question is how large the burrs will be, according to Dave Lopes, vice president of sales and marketing for Cogsdill Tool Products Inc., Camden, S.C.