Manufacturing Engineering 4th Edition Chapter 12 Manufacturing Engineering
Basic Metal Cutting Operations We Cover Three Topics Shop Safety Basic Metal Cutting Operations Speeds and Feeds Exploring Engineering
To Be Safe - Think! Exploring Engineering
Basic Safety Rules Wear eye protection at all times No loose-fitting clothing or jewelry Do not work alone Exploring Engineering
Ask Someone If You Are Have Questions = ? Exploring Engineering
Traditional Machining Operations Turning Milling Drilling Exploring Engineering
Typical Drill Press Exploring Engineering
On Lathes The Part Rotates Exploring Engineering
On Milling Machines The Cutter Rotates Exploring Engineering
Two Types Of Milling Conventional Milling Climb Milling Cutter Cutter Part Part Conventional Milling Climb Milling Exploring Engineering
Climb Milling Cutter Both the cutter and the lead screw move the table in the same direction Part Climb Milling Exploring Engineering
Speeds And Feeds Are Like Biting And Chewing Speed: how fast the cutting tool (or part) spins Feed Rate: how hast the part is advanced into the part Exploring Engineering
Manufacturers Have Recommended Cutting Speeds Exploring Engineering
Calculating The Cutting RPM Same equation for drill press, mill, and lathe Where RPM = revolutions per minute for the cutting tool (mill and drill) or work piece (lathe) CS = cutting speed in surface feet per minute Dia = diameter in inches for the cutting tool (mill and drill) or work piece (lathe) Exploring Engineering
The Feed Rate For Milling Chip load values are found in tables (check Machineries Handbook) We will use 0.003 IPT for high speed steel cutting steel Exploring Engineering
The Feed Rate For Turning (Lathe) Exploring Engineering
Summary Manufacturing is the process of converting (either by manual labor or by machines) raw materials into finished products, especially in large quantities. Manufactured goods are everywhere - aircraft, bicycles, electronics, coat hangers, automobiles, refrigerators, toys, clothing, cans, bottles, cell phones, and so on. Statistical methods are important for the control of processes. Manufacturing processes are not exactly on specification but have a scatter about their mean. Exploring Engineering