is a toothed gear engaging continuous mechanical motion and power transmitting member on the rim. Gears are engaged with each other can be toothed mechanical parts, the application of the drive gear appeared very early. The late 19th century, developed into gear cutting method of this principle and the principle of special machine tools and gear cutting tools have emerged, along with the development of production, smooth running gear attention.
1. The gear arrangement
tooth abbreviation teeth, each projection is engaged with the gear portion for, the raised portions generally radially aligned, mating teeth on the gear contact with each other, it can operate in constant mesh gears.
refers to the addendum circle of the tooth tip circle located.
alveolar space between two adjacent teeth on gear; the end surface is cylindrical or cylindrical worm gear, or a worm gear to the plane perpendicular to the axis.
refers to a normal plane perpendicular to the plane of the gear tooth lines.
is calculated gear pitch circle in the end face geometry of the reference circle.
the base circle forming an involute generating lines of pure rolling circle.
refers to the root circle round bottom located. .
2 processing methods and specific methods
(1) slotting slotting: can be processed internally toothed
(2) Hobbing Hobbing: Processable 8 modulus less helical
(3) grinding teeth grinding machine: precision gear can be processed base unit
(4) shaving machine: metal-cutting machine is used for finishing a gear [123 ]
(5) gear-shaping machine gear shaper: Processable 16 module of the large gear
(6) precision casting teeth: large quantities processed inexpensive pinion gear
(7) milling milling: linear rack can be processed
(8) the teeth casting die casting machine: most non-ferrous metal processing gear
(9) cold playing computer fight tooth: chipless machining can