Manufacturing

Manufacturing

1. Mass Production

   • one product large quantities
   • product layout
   • special purpose machines
   • efficient
   • Three Main Principles
     • Division of Labour
       • specialised cooperative labour
       • increased productivity
       • higher quality
       • cost effective
     • Principle of Work Flow
       • sequence of operations simple
       • achieves processing intents
     • Principle of Interchangeable Parts
       • streamline manufacturing process
       • machinery can be assembled on site
       • spare parts can be provided on site
   • automation
     • easy
     • Transfer machines
       • In Line Transfer Machine
         • sequence of operations moves in straight line
       • Rotary Transfer Machine
         • pallets index through 90 degrees
         • geneva mechanism
           • rotating angle determined by number of slots

2. Batch Production

   • functional layout
   • general purpose machines( more expensive)
   • textbooks, furniture
   • a lot of waiting and reprogramming
   • automation is difficult
   • variable complex path
   • transfer machining can not be used
   • inefficient and costly due to lack of automation
   • Value Added Work
     • utilise resources that add value to finished product
     • work with direct effects on product
   • non value added work
     • work customers don't pay for
     • moving parts , reprogramming, waiting

3. Jobbing

   • very specific
   • low batch size >=1
   • prototypes, aeroplanes, formula 1 cars