A singlediamond head pin, one of the most popular pin styles, contacts the mating hole at only two locations, allowing for ease of fit while still constraining all planar motion except rotation. Cylindrical locating pins with generous lead in chamfers can be used where more precision is needed...
The geometry of a simplespur gear toothis complex. Numerous dimensional parameters define the shape of the tooth profile, determine how the gears fit together, and identify locations where forces act at the gear teeth. Two of the most important parameters, often confused with each other, are: ...
the City of Chicago is using the grid system to solve the rat infestation problem. There are locations in New York that are sensing gunshots in high-crime neighborhoods.