Gear basic knowledge
26 1月 2018 | 没有评论 | posted by admin | in Article
Gear as an important mechanical components in the transmission components, widely used in machine tools, automobiles and other industries. Commonly used steel gear made of quenched and tempered steel, hardened steel, carburized hardened steel and nitrided steel. According to the hardness to be divided, the gear tooth surface can be divided into two kinds of soft tooth surface and hardened tooth surface.
Soft tooth surface gear carrying capacity is lower, but easier to manufacture, with good running, and more for transmission size and weight without strict restrictions, and small quantities of general machinery. Hardness around HRC30.
Hardened gear gear carrying capacity is high, it is after the gear cutting, and then quenching, surface hardening or carburizing quenching to increase the hardness. However, in the heat treatment, the gear will inevitably be deformed, so after the heat treatment must be grinding, grinding or finishing, in order to eliminate the error due to deformation, improve gear accuracy. Hardness above HRC45, even up to HRC60 above.
Cylindrical cutter
23 1月 2018 | 没有评论 | posted by admin | in Article
Cylindrical cutter as follows. It is generally made of high-speed steel as a whole, the helical cutting edge distribution in the cylindrical surface, there is no deputy cutting edge, helical cutting teeth cutting and gradual cut off from the workpiece, so the cutting process is relatively stable. Mainly used for horizontal milling machine processing width is less than the length of the long narrow plane milling cutter.
According to different processing requirements, cylindrical cutter has coarse teeth, fine teeth of the points, coarse teeth of the chip flute for roughing, fine teeth for finishing. Mill diameter larger, often made of indented.
Face cutter
22 1月 2018 | 没有评论 | posted by admin | in Article
Milling cutter, the main cutting edge distributed in the cylindrical or conical surface, the cutting edge of the secondary cutting edge, milling cutter axis perpendicular to the surface to be machined. According to the tooth material can be divided into two categories of high-speed steel and carbide, multi-system set of inserts inlay structure, body material 40Cr.
Carbide face milling cutter and high-speed steel milling cutter, milling speed is higher, the processing surface quality is better, and can be processed with hard skin and hardened layer of the workpiece, it is widely used. Carbide Milling Cutter by blade and knife installation of different ways, can be divided into the whole, the machine folder a welding and indexable three.
Milling cutter is mainly used in the vertical milling machine or horizontal milling machine step surface and plane, especially for larger plane processing, the main declination of 90 ° face milling cutter milling the bottom of the wide step surface. Surface milling with a plane, while participating in the cutting more teeth, but also minor cutting edge of the repair effect, the processing of the surface roughness value is small, so you can use a larger amount of cutting, high productivity, wide range of applications.
