Aerospace Gears: Opening Drill®

Code:

6501

The Challenge

The customer manufactures aerospace gears made from 4340 (28 Rc) using a Mazak Lathe with oil-based water soluble coolant.

The customer realized this process was not optimal, and they contacted Allied for a solution.

The Opening Drill® paid for itself after only 60 parts. The customer also makes a number of aerospace gears from of 15-5 stainless and 4340 (ranging from 1.00” ID to 4.50” ID (25.4 mm to 114.3 mm)), and they plan to utilize the Opening Drill in these additional applications.

Product:	Opening Drill
Objective:	Improve Process
Industry:	Aerospace
Part:	Gears
Material:	4340
Hole Ø:	3.75" (95.25mm)
Hole Depth:	7.00" (177.8mm)

The Solution

The Opening Drill

Drill Holder: OP3-1L-SS1.5

Measure	Competitor Boring Bar	Opening Drill®
RPM	400	509
Feed Rate	0.012 IPR (0.305 mm/rev)	0.004 IPR (0.102 mm/rev)
Penetration Rate	4.8 IPM (121.92 mm/min)	2.037 IPM (51.74 mm/min)
Cycle Time	19 min	3 min 30 sec
Tool Life	30 parts	30 parts

The Advantages

The Opening Drill provided:

82% cycle time decrease
Reduced boring passes
Decreased cost per hole