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An Introduction to Gear Design & Geometry


1st March 2017 9:30 am
1st March 2017 4:30 pm
The Design Unit, Newcastle University, Newcastle upon Tyne, United Kingdom   View map
0191 208 6160

An Introduction to Gear Design & Geometry


Gear geometry is thought to be complex and often considered a ‘black art’. This seminar will dispel this myth and provide delegates with a basic knowledge of spur and helical gear geometry and how gears work. No prior gear knowledge is required.


We will look at how gears work and some basic calculations relating to gear geometry. It is applicable to gear designers, manufacturing staff, machine operators, inspectors and those who are new to the gear industry and want to understand what all the fuss is about. You will need a calculator because we are going to do some simple sums!


The Seminar will cover:

  • How involute gears work o An introduction to the involute gear geometry standard ISO 21771, BGA Code of Practice 07 and gear terms and symbols
  • The basic rack, cutting tools and basic gear sums relating to spur and helical gears o Gear pairs, centre distance, working pressure angles, tooth thickness and backlash
  • Non-standard geometry, contact ratios and start of active profile calculations
  • Plenty of examples to work through – please make sure you bring a basic scientific calculator!

Key skills and knowledge:

At the end of the seminar you will understand how gears work, be competent with basic calculations relating to gear geometry, understand the basic terms and symbols and have a greater understanding of what is happening when you use gear software packages. Design, manufacture and inspection processes make more sense when you understand gear geometry.



This course is officially recognised as complying with universally accepted principles of Continual Professional Development (CPD) and have been structured to meet the criteria of personal development plans.

CPD certification means that the content and structure of the courses have been independently assessed and approved for multi-disciplinary and industry-wide continuing personal and professional development purposes.


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