2010-11-14T18:35:00.000+05:30

As you know there are like 3000 engineering colleges in India

How many colleges do you think provides quality education?

the answer will be Quite Few...
It is not the year of establishment of the college that matters but its the quality of education it offers to the students.

Quality of eduction takes in several factors like

   Quality teaching by the professors
     Good library
   Useful Laboratories
      Information Exchanging center
   The atmosphere of the college
   All Extra Facilities

Last but not Least Imposing Practical Knowledge to the Students.

Its no use of teaching Formula`s and calculations without showing the actual content practically. 1000 pages of teaching is just vein without practical knowledge.

            What i mean is showing a gear wheel drawn on a board and showing a real gear is not the same.

Students should recognize that the Laboratories are not for increasing their percentage but are for Gaining Practical Knowledge which stays as thumb impressions in their brains.

let me teach you some practical knowledge

2010-11-13T12:21:00.008+05:30

   Mechanical engineering is a diversified subject and due to my ability of working in a single field ......
   I am only able to share with you the knowledge i gain in my daily life
   I really dont know where to start with you guys but have to start some where.
   In this post i like to explain what are the threads i see for the bolts we use in my job site.

I mainly see only two type of threads namely Coarse series and fine series, may be either Metric screw threads specified by ISO or Imperial Standards specified by USA.
So for Metric standards we have Metric coarse series threads and metric fine series threads and for unified standards we have Unified coarse series threads and unified fine series threads.

ISO refers to International organization for standardization and UTS refers to Unified thread standards.

Often when we are talking about threads we cant stop talking about bolts.

so let me explain about thread using bolts.

If you want to identify the type of thread used on a bolt just by seeing it - For a said length of bolt number of coarse threads are less than that of Fine threads. Coarse threads are those with larger pitch (fewer threads per axial distance), and fine threads are those with smaller pitch (more threads per axial distance). Coarse threads have a larger threadform relative to screw diameter, whereas fine threads have a smaller threadform relative to screw diameter.

There are several parameters which we need to learn about threads like

Major diameter
Minor diameter
Pitch diameter
Pitch
Thread angle

Basic thread profiles for both the standards are the same. The differences between the two standards are the Major diameter, pitch and the thread has rounded crests and roots.

Imperial standards has an extra parameter known as TPI (threads per inch). They dont use the parameter "PITCH" so much but uses TPI.
All Imperial bolts are measured in inches and all metric bolts are measured in mm.

Success is Yours

let me teach you some practical knowledge