Special Purpose Machines (SPM) are those Machine which are 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.
Always in the Production process there is a Long Felt need to Improve the Quality of Product, Minimize Rejection and Increase the Productivity per Person, to Cater to the Pressing Circumstances in the GLOBALISED WORLD ECONOMY.
The answer to this need is use of Special Purpose Machines (SPM) giving very High Productivity. The theme can be Further Elaborated by doing a Full Scale Automation of the of the Industrial Process, wherever Possible. The use of Special Purpose Machines (SPM) And Automation Minimizes Possibility of Human Errors and also Reduces Human Fatigue in Carrying out Repetitive Operations again And again. It also Assures the Quality and Interchangeability of Parts, by Carrying out the Same Designed Process each time without any Shortcuts.
The Special Purpose Machines (SPM) And Automatic Machines are Designed to Operate Continuously for 24 hours a day, with Minimum Supervision. The Special Purpose Machines are Generally Product Specific & they are Required to be Designed & Developed for each Specific Requirement. Sometimes it May be Possible to Cater to the Jobs having Similar Features but Differing in Dimensions by Using Change Tooling Concept.
These Special Purpose Machines (SPM) are 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 are 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.