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Showing content with the highest reputation since 08/19/2018 in Images

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    From the album: Engineering images 10

    Overhead valve, also commonly called pushrod, engines are a simplified V-style design. These are built to be compact and resistant to oil contamination and are often used in small displacement racing.In consumer automotive, however, the pushrod engine has largely been replaced by the SOHC and DOHC designs....
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    From the album: Example model simulations for Packaging Machine Design.

    Case Erector Mechanism opens case as it loads conveyor This mechanism is used to erect pre-glued cases from a magazine and place on an indexing conveyor. The mechanism forces the case to open as it is pulled from the magazine. Conjugate Cams eliminate backlash and reduce overall cam stress If a disk cam drives the mechanism, then unless gravity is sufficient to hold the roller on the cam, a spring or air cylinder is needed to keep the roller in contact. This will effectively double the contact stress on the cam and increase the required drive torque and induce drive speed fluctuations. Alternatively a groove cam could be used. This will prevent a possibility of the cam roller bouncing, however, there will inevitably be backlash which will be traversed during acceleration reversals. When backlash is traversed, the roller looses contact with one flank and smashes into the other flank. This can cause vibrations and lead to premature failure and reduced precision in the tool motion. Conjugate cams, although more expensive, overcome most of these problems. Two separate cams with separate followers that are preloaded onto the cam flank to eliminate backlash. Springs are not required reducing the contact stress on bearing forces. The cams should ideally be machined in the same setup so that both profiles are truly conjugate.
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    transmission system

    From the album: Gears

    TRANSMISSION SYSTEM- A machine consists of a power source and a power transmission system, which provides controlled application of the power. Merriam-Webster defines transmission as an assembly of parts including the speed-changing gears and the propeller shaft by which the power is transmitted from an engine to a live axle. Often transmission refers simply to the gearbox that uses gears and gear trains to provide speed and torque conversions from a rotating power source to another device