What's the Best Process for Machining a Precise Hole in Aluminum?
This small hole is actually large enough that any of three different processes might be used.
Share
Question
How can I achieve 0.0025-mm tolerance on an internal diameter of 4.5 mm? The material is aluminum alloy. What machine or process should I use?
Response from John Bradford, micromachining R&D team leader for Makino
This feature and machining tolerance are achievable using one of several techniques. They are:
1. Precision boring -- using vertical or horizontal spindle, with a boring tool
2. Helical interpolation -- using an insert cutter, or coated carbide end mill. This is the preferred method for fastest machining speed. Repeatability of 0.001 mm is possible.
3. Wire EDM. This provides repeatability of size and straightness of 0.001 mm or less if required. This is a slower process, but machining variables are simple to control. (Of course, EDM assumes the hole passes completely through the part.)
Related Content
-
How to Meet Aerospace’s Material Challenges and More at IMTS
Succeeding in aerospace manufacturing requires high-performing processes paired with high-performance machine tools. IMTS can help you find both.
-
AFRC, ATI Partner to Boost Aerospace Materials Innovation
ATI Inc. has joined the University of Strathclyde’s AFRC as a tier one member, aiming to develop metallic alloys that support sustainability in the aerospace sector.
-
Shop Tour Video: From Garage Shop to Leading Aerospace Supplier
From repairing aircraft interiors to manufacturing medical implants, Superior Joining Technologies excels at CNC machining, TIG welding, laser welding, and NADCAP-accredited nondestructive testing. Discover how this Rockford-based company supports the aerospace industry through a combination of advanced technologies.