Reading Assignment
- 20.1 Introduction to Machining
- 20.2 Machining Fundamentals
- 21.1 Introduction to Cutting Tools for Machining
- 21.2 Cutting-Tool Materials
Recommended Reading
- Metal Cutting
- Study Guide – Machining Parameters
- From Fox Valley Technical College:
See also
Outline
Optimizing Machining Efficiency
Time is Money
Main Trade-off
Major Factors
Work Material
- Machinability Rating
- Tool Life
- Power Consumption
- Surface Finish
- Microstructure can affect machinability
- Surface condition
- These differences can occur in the same piece of metal
Tool Material
- Carbon Steel
- HSS
- Can retain hardness at temps up to 1,000°F
- Alloyed with W, Mo, Cr, V, and C
- Tool Steels
- Coated and Uncoated Carbides
- Ceramics
- Polycrystaline Diamonds
Insert-Style Tooling
Insert Shapes/Strength
Insert Identification System (ANSI B212_4)
3 Primary Parameters
- Cutting Speed
- Feed Rate
- Depth of Cut
Cutting Speed Formulas
Set RPM from known cutting speed and diameter
Find cutting speed from known RPM and Diameter
