Vertical Milling Machine
When you complete this lesson, you will be able to identify the basic control systems and machining methods used on a vertical milling machine and explain the basic operations necessary to manufacture replacement or repair parts used in various types of equipment.
- Identify the function of the vertical milling machine’s operational controls.
- Explain how workpieces and cutting tools may be precision located through coordinate measuring.
- Explain how to square a work piece on a vertical milling machine.
- Describe the use of the holding and clamping tools.
- Explain how to determine suitable speeds and feeds for various:
- Describe the use of each of the following cutting tools:
Gas metal arc welding
From Wikipedia, the free encyclopedia
Gas metal arc welding Gas metal arc welding (GMAW), sometimes referred to by its subtypes metal inert gas (MIG) welding or metal active gas (MAG) welding, is a semi-automatic or automatic arc welding process in which a continuous and consumable wire electrode and a shielding gas are fed through a welding gun. A constant voltage, direct current power source is most commonly used with GMAW, but constant current systems, as well as alternating current, can be used. There are four primary methods of metal transfer in GMAW, called globular, short-circuiting, spray, and pulsed-spray, each of which has distinct properties and corresponding advantages and limitations.
Originally developed for welding aluminum and other non-ferrous materials in the 1940s, GMAW was soon applied to steels because it allowed for lower welding time compared to other welding processes. The cost of inert gas limited its use in steels until several years later, when the use of semi-inert gases such as carbon dioxide became common. Further developments during the 1950s and 1960s gave the process more versatility and as a result, it became a highly used industrial process. Today, GMAW is the most common industrial welding process, preferred for its versatility, speed and the relative ease of adapting the process to robotic automation. The automobile industry in particular uses GMAW welding almost exclusively. Unlike welding processes that do not employ a shielding gas, such as shielded metal arc welding, it is rarely used outdoors or in other areas of air volatility. A related process, flux cored arc welding, often does not utilize a shielding gas, instead employing a hollow electrode wire that is filled with flux on the inside
Engine Lathe
When you complete this lesson, you will be able to identify engine lathe control systems and machining methods, and explain the basic methods to manufacture replacement or repair parts for various types of equipment.
Describe basic engine lathe parts and operational controls.
Identify types of chucks and discuss procedures for installing and removing chucks and faceplates on cam lock spindles.
Explain the operation and use of the four jaw chuck.
Describe tail stock parts and operations.
Describe the following types of cutting tools and discuss their uses:
- Carbide and alloy turning tools and drills
- Threading and specialty tools
Identify factors that determine suitable speeds and feeds for different cutting tools, operations, and work piece materials.
Describe the basic methods used for:
Turning operations
Shaft work
Thread cutting
Boring
Facing
List other machining processes possible on an engine lathe.
Surface Grinder
When you complete this lesson, you will be able to describe surface grinder control systems and explain basic machining methods used to manufacture replacement parts used to repair various types of equipment.
Identify surface grinder components and identify their functions.
Discuss techniques and components related to workpiece clamping.
Identify types of grinding wheels and compare their uses.
Explain the basic steps for dressing a grinding wheel and profile-shaping a grinding wheel.
Describe the two basic techniques for grinding a part.
Identify safety equipment and best practices for safe grinder operation.
Outline the technique for grinding a workpiece parallel and to a specific size.