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

Indexable Shell Mill

Countersink

Combination Drill & Countersink

Ball End Mill

Non-Center Cutting End Mill

Center Cutting End Mill

Spotting Drill

Flutes

4 Flute End Mill2 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 Center Cutting

2 Flute Center Cutting 4 Flute

Non-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

Tool Description MSC Part #

Application

¼” Countersink & De-burring Tool –

90 Degree02462166

Engraving, De-burring,

countersink, Spot drilling

#3 Combined drill & countersink 90

Degree71037030

Spot drilling, Engraving

¼” spotting drill 90 deg

01833003 Spot Drilling, Engraving

Engraving Tool Options

Professional Development ID Code: 6005

Setting Up The Tool Library

Select the tool number. This will be

identified as tool 1 (M06 T1)

Type in a tool descriptionEnter the

Diameter

Fraction Decimal1/16 0.06251/8 0.1250

3/16 0.18751/4 0.2500

5/16 0.31253/8 0.3750

7/16 0.43751/2 0.5000

9/16 0.56255/8 0.6250

11/16 0.68753/4 0.7500

13/16 0.81257/8 0.8750

15/16 0.93751 1.0000

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.

A Ball Mill has a constant radius (1/2

Diameter) on its end.

Setting Up The Tool Library

A Standard Drill (118° Point)

Define the taper angle.

Define the diameter at its

end point.

An engraving tool is a type of tapered cutter.

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