Gear : Introduction : Gear is a simple machine with teeth that increase the force needed to pull or push something. It is transmitt the power. Gear एक साधारण मशीन है जो किसी चीज को धक्का देने के लिए आवश्यक बल को बढ़ाती है ..यह पावर को ट्रांसमिट करती है! Gear terminology :- 1. pitch circle :- it is an imaginary circle which by pure rolling action would give the same motion as the actual gear. 2. Pitch circle diameter :- It is the diameter of the pitch circle. the size of the gear is usually specified by the pitch circle diameter .it is also called pitch diameter. 3. Pitch point :- It is the common point of contact between two gears. 4 Addendum :- It is a radial distance of a tooth from the Pitch Circle to the top of the tooth. 5. Dedendum :- it is a radial distance of a tooth from pitch circle to the bottom of the tooth. 6
MECHANICAL ENGINEERING INTRODUCTION :- Technically, mechanical Engineering is the application of motion, energy and force and it is also a problem solving techniques of engineering for any subject from design to manufacturing to the marketplace . Mechanical engineers create their own image because their creativity technology is connected to our daily life and affects us immensely. All the work done by this field is very useful for the modern age and the product or service produced by them is rough Kind of extremely useful for us. In order to understand mechanical engineering, we need some other touched information for help. such as including mechanics , material technology, thermodynamics , structural analysis, production , industrial management and other knowledge Mechanical engineering have some most important special and helpfull subjects which is included manufacturing, Cumbution, nanotechnology and robotics. Which is very interesting and helpfull for modern wor