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  • Posted: 12/05/2013 11:12:57  Clicks: 1452
    These offer a refinement over spur gears. The leading edges of the teeth are not parallel to the axis of rotation, but are set at an angle. Since the gear is curved, this angling causes the tooth shape to be a segment of a helix. The angled teeth engage more gradually than do spur gear teeth, causing them to run more s...
  • Posted: 12/05/2013 11:12:33  Clicks: 1485
    These overcome the problem of axial thrust presented by "single" helical gears by having two sets of teeth that are set in a V shape. A herringbone gear (double helical gears) can be thought of as two standard mirror image helical gears bonded together side-by-side to form a single gear. This cancels out the ...
  • Posted: 12/05/2013 01:12:10  Clicks: 1536
    Bevel gears are useful when the direction of a shaft's rotation needs to be changed. They are usually mounted on shafts that are 90 degrees apart, but can be designed to work at other angles as well. The teeth on bevel gears can be straight, spiral or hypoid. Straight bevel gear teeth actually have the same problem...
  • Posted: 12/05/2013 01:12:54  Clicks: 1343
    Spur Gear is the simplest, most common type of gear used. They consist of a cylinder or disk with the teeth projecting around the entire circumference, and although these teeth are not straight-sided in form, the edge of each tooth is straight and aligned parallel to the axis of rotation.These gears can be meshed toget...
  • Posted: 01/25/2014 04:01:56  Clicks: 1874
    The quenching is the main link of the gear distortion. The basic method of control of quenching distortion is making each part of the gear cooling uniformity as much as possible. In addition, there are also some problems worthy of attention:   1. The influence of the distortion is the steel’s hardenabil...
  • Posted: 02/27/2014 03:02:44  Clicks: 1451
    Investment Casting, also known as lost-wax casting, is an industrial process used to create metal parts with great detail that would be difficult to achieve with other casting methods. It is one of the oldest metal-forming techniques dated back to 5,000yeas ago, in which molten metal is poured into a mold. Today, inv...
  • Posted: 02/27/2014 03:02:11  Clicks: 1266
    1. The original information and data for design  ◆ Prime mover types, size, revolving speed, power (torque), starting characteristic, short-term overload capacity, rotational inertia etc.    ◆ Machinery type, size, application, revolving speed, and power (torque). Working system: Permanent load...
  • Posted: 04/28/2015 03:04:45  Clicks: 1086
    As power machinery develops to the direction of high speed, heavy machinery, high power and high efficiency, all kinds of gears it needed in reducer box, growth box and gearbox also improves toward hard tooth surface, low noise and high precision. To meet the requirements, for nearly a decade gear grinding machine ha...
  • Posted: 05/07/2015 03:05:58  Clicks: 991
    Because the ratio of its parts length and diameter is large and inadequate part thickness, the disc parts have poor rigidity and processing manufacturability. During parts processing, the components can be easily deformed under the impact of cutting force, clamping force, cutting vibration, and so on, and the precisi...
  • Posted: 03/25/2014 03:03:11  Clicks: 1421
    Ⅰ Summary   Gear is the most important basic part of mechanical products. Gear transmission is a main form of transfer machine power and movement. Compared with mechanical transmission such as belt, friction, hydraulic, it has a larger range of power, higher transmission efficiency, more exact transmission ...
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