|
Hobbing
Hobbing is a machining process for gear cutting, cutting splines, and cutting sprockets using a specialized milling machine. The teeth or splines of the gear are progressively cut into the material (such as a flat, cylindrical piece of metal or thermoset plastic) by a series of cuts made by a cutting tool. Hobbing is relatively fast and inexpensive compared to most other gear-forming processes and is used for a broad range of parts and quantities. Hobbing is especially common for machining spur and helical gears. A type of skiving that is analogous to the hobbing of external gears can be applied to the cutting of internal gears, which are skived with a rotary cutter (rather than shaped or broached). History Christian Schiele of Lancaster, England patented the hobbing machine in 1856. It was a simple design, but the rudimentary components are all present in the customary patent drawings. The hob cutting tool and the gear train to provide the appropriate spindle speed ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gear Cutting
Gear cutting is any machining process for creating a gear. The most common gear-cutting processes include hobbing, broaching, milling, grinding, and skiving. Such cutting operations may occur either after or instead of forming processes such as forging, extruding, investment casting, or sand casting. Gears are commonly made from metal, plastic, and wood. Although gear cutting is a substantial industry, many metal and plastic gears are made without cutting, by processes such as die casting or injection molding. Some metal gears made with powder metallurgy require subsequent machining, whereas others are complete after sintering. Likewise, metal or plastic gears made with additive manufacturing may or may not require finishing by cutting, depending on application. Processes Broaching For very large gears or spline, a vertical broach is used. It consists of a vertical rail that carries a single tooth cutter formed to create the tooth shape. A rotary table and a Y axis a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gear Shaper
A gear shaper is a machine tool for cutting the teeth of internal or external gears, it is a specialised application of the more general shaper machine. The name shaper relates to the fact that the cutter engages the part on the forward stroke and pulls away from the part on the return stroke, just like the clapper box on a planer shaper.Woodbury, Robert S. ''Studies in the history of machine'' ''tools''. Cambridge, Mass. :M.I.T. Press, 1972 The cutting tool is also gear shaped having the same pitch as the gear to be cut. However number of cutting teeth must be less than that of the gear to be cut for internal gears. For external gears the number of teeth on the cutter is limited only by the size of the shaping machine. The principal motions involved in rotary gear shaper cutting are of the following : # ''Cutting Stroke'': The downward linear motion of the cutter spindle together with the cutter . # ''Return Stroke'': The upward linear travel of the spindle and cutter to withdra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotating Spline
A spline is a ridge or tooth on a drive shaft that matches with a groove in a mating piece and transfers torque to it, maintaining the angular correspondence between them. For instance, a gear mounted on a shaft might use a male spline on the shaft that matches the female spline on the gear. Adjacent images in the section below show a transmission input shaft with male splines and a clutch plate with mating female splines in the center hub, where the smooth tip of the axle would be supported in a pilot bearing in the flywheel (not pictured). An alternative to splines is a keyway and key, though splines provide a longer fatigue life, and can carry significantly greater torques for the size. Types There are several types of splines: ;Parallel key spline: where the sides of the equally spaced grooves are parallel in both directions, radial and axial. ;Involute spline: where the sides of the equally spaced grooves are involute, as with an involute gear, but not as tall. The c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tailstock
Tailstock used for drilling A tailstock, also known as a foot stock, is a device often used as part of an engineering lathe, wood-turning lathe, or used in conjunction with a rotary table on a milling machine. It is usually used to apply support to the longitudinal rotary axis of a workpiece being machined. A lathe center is mounted in the tailstock, and inserted against the sides of a hole in the center of the workpiece. A Tailstock is particularly useful when the workpiece is relatively long and slender. Failing to use a tailstock can cause "chatter," where the workpiece bends excessively while being cut. This bending can also cause finished parts to exhibit an unintended taper where the unsupported end of the part is larger in diameter compared to the end supported by the headstock. It is also used on a lathe to hold drilling or reaming tools for machining a hole in the work piece. Unlike drilling with a drill press or a milling machine, the tool is stationary while the workp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hob Dimensions
Hob, HOB or Hobs may refer to: Businesses and organizations * Heart of Brooklyn, a tourism-related non-profit organization in New York City * HOB GmbH & Co KG, an international computer company * Hobs Reprographics, a British printer * Hemne Orkladal Billag, a defunct Norwegian transport company * House of Blues, a chain of music halls and restaurants People * Hob Broun (1950–1987), American author * Hob Bryan (born 1952), American politician * Hob Hiller (1893–1956), American Major League Baseball player Fictional characters * Hob Gadling, in ''The Sandman'' comic book series by Neil Gaiman * Hob, a robot-like creature in the webcomic '' Dresden Codak'' * Hob, in ''RoboCop 2'' Codes * hob, ISO 639-3 code for the Mari language (Madang Province) of Papua New Guinea * HOB, station code for Hoboken Terminal, New Jersey, United States * HOB, IATA code for Lea County Regional Airport, New Mexico, United States * HOB, UK code for HM Prison High Down, Surrey Other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chuck (engineering)
A chuck is a specialized type of clamp (tool), clamp used to hold an object with rotational symmetry, radial symmetry, especially a cylinder (geometry), cylinder. In a drill, a Milling (machining), mill and a transmission (mechanics), transmission, a chuck holds the rotating tool bit, tool; in a lathe, it holds the rotating workpiece. Chucks commonly use jaws to hold the tool or workpiece. The jaws are typically arranged in a radially symmetrical pattern like the points of a star (polygon), star. Jawed chucks may require a Wrench#Other types of keys, wrench-like device called a ''chuck key'' to be tightened or loosened, but other jawed chucks may be tightened or loosened by hand force alone, offering convenience at the expense of gripping force. Chucks on some lathes have jaws that move independently, allowing them to hold irregularly shaped objects. More complex designs might include specially shaped jaws, greater numbers of jaws, or quick-release mechanisms. Instead of jaws, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Involute
In mathematics, an involute (also known as an evolvent) is a particular type of curve that is dependent on another shape or curve. An involute of a curve is the Locus (mathematics), locus of a point on a piece of taut string as the string is either unwrapped from or wrapped around the curve. The evolute of an involute is the original curve. It is generalized by the Roulette (curve), roulette family of curves. That is, the involutes of a curve are the roulettes of the curve generated by a straight line. The notions of the involute and evolute of a curve were introduced by Christiaan Huygens in his work titled ''Horologium Oscillatorium, Horologium oscillatorium sive de motu pendulorum ad horologia aptato demonstrationes geometricae'' (1673), where he showed that the involute of a cycloid is still a cycloid, thus providing a method for constructing the cycloidal pendulum, which has the useful property that its period is independent of the amplitude of oscillation. Involute of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Affolter AF160 CNC Gear Hobbing Machine Gear Cutting
Affolter is a surname * Félicie Affolter (1926–2024), Swiss psychologist, psychotherapist, speech therapist and teacher of the deaf. * François Affolter (born 1991), Swiss footballer * Konrad Affolter (born 1954), Swiss handball player * Markus Affolter (born 1958), Swiss biologist *Heath, Jon, Nathan and Thomas Affolter, brothers who run the Canadian film studio Foreshadow Films. {{surname ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
