6 March 2017

Use of standards in machine design

The following standards are used to all mechanical engineer while design a machine components.
  • Standards for materials, their chemical compositions, mechanical properties and heat treatment.
  • Standards for shapes and dimensions of commonly used machine elements.
  • Standards for fits, tolerance and surface finish of components.
  • Standards for testing of products.
  • Standards for engineering drawing of components.
Mainly there are three types of standards used in design.
  • Company standards
They are used in particular company or group of company.
  • National standards
National standards are :

IS ( Bureau of Indian Standards ) 
DIN ( German )
BS ( UK )
  • International standard
These are prepared by the International Standards Organization ( ISO )