Tooling for CNC Milling Computer Integrated Manufacturing Unit 2 CNC Machining

In this lesson Examine cutting tools and their recommended uses. Review the steps for setting up the tool library.

Basic Cutting Tools Ball End Mill Combination Drill & Countersink Indexable Shell Mill Center Cutting End Mill Non-Center Cutting End Mill Spotting Drill Countersink

Flutes More room for chip evacuation 2 Flute End Mill 4 Flute End Mill More room for chip evacuation Used for light metals Weak, short tool life More cutting edges, longer tool life Used for harder metals Clogs easily in deep cuts

Center vs. Non-Center Cutting 4 Flute Non-Center Cutting 2 Flute Center Cutting 4 Flute Center Cutting

Milling Tools Tool Description MSC Part # Application ¼” 2 Flute HSS Single End Mills For Cutting Aluminum – 3/8 Shank x 1 ¼ cutting length 01901164 Facing, profiling, Pocketing, Slotting, Roughing and Finishing ¼” 2 Flute Ball End Mill for Aluminum – 3/8 shank x 1 ¾ cutting length 71886162 Surfacing, Slotting, profiling, Roughing and Finishing

Engraving Tool Options Description MSC Part # Application ¼” Countersink & De-burring Tool – 90 Degree 02462166 Engraving, De-burring, countersink, Spot drilling #3 Combined drill & countersink 90 Degree 71037030 Spot drilling, Engraving ¼” spotting drill 90 deg 01833003 Spot Drilling, Engraving Professional Development ID Code: 6005

Setting Up The Tool Library Enter the Diameter Type in a tool description Select the tool number. This will be identified as tool 1 (M06 T1)

Setting Up The Tool Library Select the type of Tool. An End Mill has a flat bottom. A center cutting is recommended since plunging is often required. A Bull Mill has a nose radius on its corners - Define the radius here.

Setting Up The Tool Library A Standard Drill (118° Point) An engraving tool is a type of tapered cutter. Define the taper angle. A Ball Mill has a constant radius (1/2 Diameter) on its end. Define the diameter at its end point.

Setting Up The Tool Library Station Number – Defines the tool location for Automatic Tool Changers

Various Suppliers http://www.coromant.sandvik.com/ http://www.kennametal.com/en/metalworking/mw_home.jhtml http://www.mscdirect.com http://www.penntoolco.com/main.cfm

Curriculum Alignment: Unit 2 – CNC Machining Section 2.2 – CNC Characteristics 2.2.2 – Tooling

References: Kibbe, R.R. & Neely, J.N & Meyer, R.O. & White, W.T. (2002). Machine Tool Practices, Upper Saddle River, NJ: Prentice Hall. Mattson, M. (2002). CNC Programming Principles and Applications, Albany, NY: Delmar.

Credits: Writer: Ken McDermith Content Editor: Donna E. Scribner Narration: Donna E. Scribner PLTW Editor: Ed Hughes Production: CJ Amarosa Video Production: CJ Amarosa Audio: CJ Amarosa Project Manager: Donna E. Scribner