Special Purpose Machine
Special Purpose Machines (SPM) is that Machine which is not available off the Shelf. These are not covered in Standard Manufacturing Programs. There Fore they have to be Designed & Tailor Made as Per the Customers Specific Requirements.
This Special Purpose Machines (SPM) is either Cam Operated Machine or they use Hydraulics & Pneumatics as Actuating Elements or Combination of all the three of them. Many times a Dedicated Programmable Logic Controller is used in Conjunction with Positional Sensors & Transducers, to give Commands to the Actuating Elements some Times Different Special Motors like Stepper Motor & Servo Motors are used as Actuating Element. The Productivity Achieved after all these Efforts is very high. Productivity of 3 to 10 times is Achievable. However to Fetch the Fruits of these Highly Specialized Machines the Pre-Condition is that the Input to the Automatic Machine must have Strict Quality Control.