transmission or the conversion movement in the various mechanisms and instruments by means of toothed or worm gears.It is the most common way in modern engineering and design of various devices.
main element or worm gear is a gear.A more simple and economically viable alternative to the invention's designer modern engineers have not yet found.Converters movements that involve gear, reliable and durable to use, compact and high efficiency.This type of transmission can transmit considerable power despite its ease of use.
However, the manufacture of gears require high precision.When miscalculation and errors in the design or incorrect assembly of the parts operation leads to a rapid deterioration and equipment failure, the emergence of excess noise and destructive vibrations.
In modern appliances and machinery as the main material for the production of parts usually use different types of improved, specially treated steels, which have long established themselves as durable, wear-resistant material.However, the advanced technology of Western and allow domestic manufacturers to replace metal alloys lighter plastics and composites.
toothed wheel, which is used in the manufacture of PCB, polyurethane, nylon or plastic drevesnosloisty facilitate construction to avoid vibration or noise and additional screening.The mechanisms that do not require transmission of high loads, the plastic will be more reliable and durable.The use of gears of these materials are much cheaper.And the excellent corrosion resistance extend the life of parts.
classification of these elements is made according to the location of their axes, the way of engagement, constructive design and shape of the profile.There are spur, helical, herringbone and wheels with an external or internal gears, conical, cylindrical, worm and helical gear.
Each gear mechanism can be rotated in the same or in the opposite direction to convert rotation of a shaft into linear motion by a rack and pinion.Selection and sizing of a particular part is dependent on the destination, specifications and types of motion transmission.
for precise design of the gear necessary to carry out mathematical calculations according to certain formulas, using information from the standard documentation and manuals for mechanical engineering.The main parameters of the details necessary for planning include the number of teeth on the outside diameter of the wheel protrusions and recesses, pitch diameter wheels, the height of the tooth, which is the sum of the height of the head and legs of the tooth, and a step of engagement.
When choosing material for gear calculated flexural strength in dangerous sections at the base of the pole and the engagement of the teeth.
