MET 1321 Machining and Welding

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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 Belt Grinder Surface Grinder Surface Grinder Bench Grinder A machine that removes material by rotating an abrasive wheel or belt against the work.

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.

Nontraditional Machining

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) http://www.sodick.com/index.php?t=products/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) CNC Lathe CNC Surface Grinder CNC Mill 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.