Knowledge of CNC Machines

• SME Machinery Exhibition 2010

  8/22/2010
  
  
  "Technology for Rural, Micro and SME Development"
  
  Date : August 27th, 28th , 29th , 2010 Time : From 10.00 a.m. to 9.00 p.m. Venue : Sirimavo Bandaranaike Exhibition Centre (BMICH)
  Colombo. Sri Lanka ..

• Classification of Machine Tools (4)

  7/30/2010
  
  Single-Purpose Machine Tools
  
  These machine tools are those which are desinged specifically for doing single operation on a class of jobs or on a single job.
  
  They have the highest amount of automation and are used for high rates of production.
  
  These machine tools are used specifically for one product only and thus have the least flexibility. However t..

• Classification of Machine Tools (3)

  7/5/2010
  
  Special Purpose Machines (SPM)
  
  They are those machines for which the setting operation is practically eliminated and complete automation is achieved. This greatly reduces the cost and the cycle time (the actual production time) of a component.
  
  Special Purpose Machines are generally used for mass production, which are more expensive compared to General Purpose Machi..

• Classification of Machine Tools (2)

  6/22/2010
  
  Production Machine Tools
  
  They are those machine tools with a number of automatic functions, so that the human skills required to produce the components are reduced. This helps reduce the idle time of the machine tools so as to improve their utilization.
  
  A general purpose machine tool may also be converted into a production machin..

• Classification of Machine Tools (1)

  5/13/2010
  
  There are many ways in which machine tools can be classified. One classification based on production capability and application is given in the following lines.
  
  
  General Purpose Machine Tools(GPM)
  
  
  These tools are those designed to perform a variety of machining operations on a wide ranging type of components.
  
  
  By its very nature of ..

• About Servomechanism (2)

  4/13/2010
  
  
  A common type of servo provides position control. Servos are commonly electrical or partially electronic in nature, using an electric motor as the primary means of creating mechanical force.
  
  
  Other types of servos use hydraulics, pneumatics, or magnetic principles.
  
  
  Usually, servos operate on the principle of negative feedback, where the contro..

• About Servomechanism (1)

  4/6/2010
  
  A servomechanism, or servo is an automatic device that uses error-sensing feedback to correct the performance of a mechanism.
  
  
  The term correctly applies only to systems where the feedback or error-correction signals help control mechanical position or other parameters. For example, an automotive power window control is not a servomechanism, as there is no automatic feed..

• CNC Machine Tools (2)

  3/17/2010
  
  The controllers have a number of modes in which they operates. There can be four possible modes in which the controller can function in relation to a machining center.
  
  The first shows a typical drilling machine operation, termed as point-to-point mode. In this, the control has the capability to operate all the three axes, but not necessarily simultaneously. As a result, it woul..

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