Gear Mandrel

A block of metal is called as Mandrel, if other metals bend around of it. The term mandrel normally refers to an object which is used to provide shapes on machine works. This term also refers a tool component that is used to provide grip for other movable tool components. In a lathe, the clamp which is used to retain the piece of metal, plastic or wood, is a simple example of a mandrel. The clamp (mandrel) is used in a lathe in order to machine the material (whether it may be wood, plastic or metal) as it is turned. Besides in lathe, mandrel is also used to hold buffing wheels, sanding disco onto drills, circular saw blades and such kind of power devices. Most of the mandrels are driven by using the motors but for driving some other mandrels, attachment to a pulley driven shaft is used.

Applications/Uses of Gear Mandrel
Mandrel is a device which is used either in the following applications:

• To provide shape of machine works.
  
  
• Used as a tool components to grip or clamps materials which has to be machined.
  
  
• Used as a tool components to grip other movable tool components.
  
  

Types of Gear Mandrel
No specific names are there for different types of mandrel. The classifications of mandrel have been done on the basic of their applications. The different types of mandrel have been mentioned as follows:

• Metallic shaped bar that is either inserted in an item or next to the item which has to be bent in a certain pattern or style. Mandrel is used during the manufacturing of bent-exhaust pipes, used in automobiles. The smooth bending of the exhaust pipes is possible without any kinking, creasing and collapsing is due to the mandrel. In providing shapes from the molten glass, mandrel can be used. In jewelry industry, mandrel is used in providing various shapes of ornaments. In jewelry manufacturing, the goldsmith hits the gold metal by a hammer against the mandrel.
  
  
• The clamp used in a lathe to hold either the metal, wood or plastic to be machined, is another type of mandrels. The uses of this kind of mandrels are: in threading or rods, in making beautiful patterns on furniture legs, in providing round or cylindrical shape on the irregular shaped objects.
  
  
• Mandrel of this category, consists a cylinder. This cylinder is threaded on one end and this threaded side has a washer brazed onto the end of the threaded portion. It also hold a second washer and a screw to clamp the circular saw blade. Mandrel of this category is used to hold buffing wheels, sanding disco onto drills, circular saw blades and such kind of power devices.