Drilling & Boring

Several alternatives mechanical drilling make sense when the application is right.

When drilling and milling, controlling runout is critical to maximize tool life and reduce cost per hole.

Flowdrill Inc. provides a video demonstration of its thermal drilling process. The company produces tungsten-carbide bits and roll-form taps to thermal drill and then thread holes in malleable materials.

A long boring tool can cause vibration, so deep holes can be deep trouble. But several strategies can minimize vibration.

Custom tools help aerospace part makers meet demanding specs.

Sandvik Coromant's CoroBore 825 is for finishing of holes with tight tolerances and surface finish requirements.

A growing number of machine shops are switching from gundrills to solid-carbide drills for deep-hole applications.

Precision Dormer filmed its R571 CDX-DH "One-hit" Deep-Hole Drillmaking holes 102mm deep at a speed of 157mm/min. and feed rate of0.14mm/rev.

Iscar designed drills for small-diameter, deep holes in automotive crankshafts, camshafts, connecting rods and more—all with minimum quantity lubrication.

Drilling, milling, EDMing, laser cutting, trepanning, punching; there are almost as many ways to make holes as there are holes to be made. Drilling, the most common holemaking method, itself includes many tool material and configuration options.

CTE's July cover story examines drills with interchangeable carbidetips, while the accompanying video shows how interchangeable-tip drills permit quick inspection and replacement.

Boring tools can do more than true holes — they can also help overcome r manufacturing obstacles.