Presentation on theme: "MET 1321 Machining and Welding. Introduction to Machining."— Presentation transcript:
MET 1321 Machining and Welding
Introduction to Machining
The Lathe A machine in which a workpiece in a workholding device is rotated while a stationary cutting tool is forced against it. Some operations performed on a lathe include turning, boring, facing, thread cutting, drilling, and reaming.
The Lathe Cylindrical parts are typically machined on a lathe.
Drill Press A machine that rotates a drill against stationary material with sufficient pressure to cause the drill to penetrate the material. It is primarily used for cutting round holes.
Drill Press Drilled holes.
Grinding Machine A machine that removes material by rotating an abrasive wheel or belt against the work. Surface Grinder Bench Grinder Belt Grinder
Band Saws Band machining makes use of a continuous saw blade to ensure rapid chip removal.
Milling Machine A machine that removes metal from work by means of a rotary cutter.
Milling Machine Milled parts.
Broaching Machine A machining process for flat, round, and contoured surfaces, both internal and external. A broach is pushed or pulled across the work, with each tooth removing only a small portion of the material. Cutting a key is typically a broaching process.
Electrical Discharge Machining (EDM) A process by which an electric spark is used to erode away small amounts of material from a workpiece. EDM is used to machine soft or hard materials that are difficult to work by conventional machining.
Ultrasonic Machining A machining process in which sound waves above the audible range propel an abrasive for use as a metal-cutting tool.
Electron Beam Machining (EBM) A metal removing process in which heat is produced by a sharply focused electron beam.
Laser Machining A process that uses an intense source of coherent light energy as a cutting tool.
Computer Numerical Control (CNC) A system in which a program is used to precisely position tools and/or the workpiece and to carry out the sequence of operations needed to produce a part. CNC Mill CNC Lathe CNC Surface Grinder