![Agma design manual for cylindrical worm gearing : free programs 2017 Agma design manual for cylindrical worm gearing : free programs 2017](http://www.machinedesign.com/sites/machinedesign.com/files/uploads/2016/10/12/1216_MD_EE_Gear_1-19.jpg)
Robot Design Manual 2.0 is a very smart program that describes how to design and build the Workman Mobile Robot.Major features: This remotely controlled platform features 4-piece platform shell, 8' drive wheels, and two high-torque worm-gear. Serving an entire spectrum of mechanical drive applications from food, energy, mining. Product design and specifications without notice. Cone Drive Product Catalog and Engineering Manual. Double Enveloping Worm Gears & Speed Reducers. Cylindrical worm gearing. AGMA #8 COMPOUND (NON-E.P).
What is a gear? A gear is a kind of machine element in which teeth are cut around cylindrical or cone shaped surfaces with equal spacing. By meshing a pair of these elements, they are used to transmit rotations and forces from the driving shaft to the driven shaft. Gears can be classified by shape as involute, cycloidal and trochoidal gears. Also, they can be classified by shaft positions as parallel shaft gears, intersecting shaft gears, and non-parallel and non-intersecting shaft gears. The history of gears is old and the use of gears already appears in ancient Greece in B.C.
In the writing of Archimedes. Types of Gears There are many types of gears such as spur gears, helical gears, bevel gears, worm gears, gear rack, etc. These can be broadly classified by looking at the positions of axes such as parallel shafts, intersecting shafts and non-intersecting shafts. It is necessary to accurately understand the differences among gear types to accomplish necessary force transmission in mechanical designs. Even after choosing the general type, it is important to consider factors such as: dimensions (module, number of teeth, helix angle, face width, etc.), standard of precision grade (ISO, AGMA, DIN), need for teeth grinding and/or heat treating, allowable torque and efficiency, etc. Besides this page, we present more thorough gear technical information under Gear Knowledge (separate PDF page).
In addition to the list below, each section such as worm gear, rack and pinion, bevel gear, etc. Has its own additional explanation regarding the respective gear type. If it is difficult to view PDF, please consult these sections. It is best to start with the general knowledge of the types of gears as shown below. But in addition to these, there are other types such as face gear, herringbone gear (double helical gear), crown gear, hypoid gear, etc. A screw shape cut on a shaft is the worm, the mating gear is the worm wheel, and together on non-intersecting shafts is called a worm gear.
Worms and worm wheels are not limited to cylindrical shapes. There is the hour-glass type which can increase the contact ratio, but production becomes more difficult. Due to the sliding contact of the gear surfaces, it is necessary to reduce friction. For this reason, generally a hard material is used for the worm, and a soft material is used for worm wheel. Even though the efficiency is low due to the sliding contact, the rotation is smooth and quiet. When the lead angle of the worm is small, it creates a self-locking feature.
Internal gears have teeth cut on the inside of cylinders or cones and are paired with external gears. The main use of internal gears are for planetary gear drives and gear type shaft couplings. There are limitations in the number of teeth differences between internal and external gears due to involute interference, trochoid interference and trimming problems. The rotational directions of the internal and external gears in mesh are the same while they are opposite when two external gears are in mesh.