Bearing rough cutting technology

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Cutting the forging process. The level of the material quality, i.e. the weight and size of the precise or not, the cross section geometry of the good or bad, will directly affect the quality of the forging process and the forging.
Bearings due to the high speed upsetting machine, flat forging machine, multi-station press with side slider forging production line more, these lines directly bar forged bearing rings, thus cutting the number of relatively small. First, the implementation of bar stock in order to improve the geometric accuracy and cutting weight accuracy, the radial compaction, is to improve the shear rate. Higher degree of automation and cutting equipment abroad, generally have a loading and unloading, feeding, automatically excluded from the head, automatic monitoring device.
Traditional trenching methods are basically open shear, the material quality, the weight difference of about 5%, the end face of inclination is much larger than 3 °. Therefore, the domestic manufacturers are exploring new methods. abec bearings
For the majority of domestic m anufacturers, single point press with the abrasive shear cutting, therefore, on the improvement of the abrasive made a lot of useful work cutting quality is mainly affected by the shear bar Axial movement and warpage, and this end, there has been the sleeve-type shear modulus. Even if shear blade and moving blade shape and cross-sectional shape of the bar is the same, in order to limit the warping and blade of the shear bar the flattening bar shearing, the shear quality improved significantly. Actual production, cold cutting weight difference may be controlled within 1%, collapsed depth of 0.5 mm, the end face inclination of less than 2 ° 30 ; for thermal cutting weight difference of 2% to the end face inclination at 3 °. Constrained shear modulus. I.e. to radially intensify manner so that the warpage of the rod material, axial movement and the cutout flattening are restricted. This way, some only a fixed knife end to step up, and some are to be stepped up in the en d of the fixed knife and the knife end its tightening cylinder-institutional linkage. The blades are made of the same shape as the sectional shape of the bars, in addition, also in this abrasive with an automatic feeding device. This way of cutting weight difference may control less than 1% of the cross-section tilt less than 2 °.
Bar eagerly machine are on the increase, basic is run on the form of a production line. Medium frequency induction heating, automatic feeding, automatic feeding, (individually with) automatically detect a high degree of automation, and shearing machine with a radial device intensify, body rigidity, and automatically adjust the backgauge, shearing cut quality is greatly improved compared to the previous vintage shears, up to the shear weight of error is less than 1.5%, the cross-section inclination of less than 3 °.
Band saw cutting foreign products, the country has to use. As the the bandsaw high rigidity of the structure, relia ble guide of the rails; feed control to ensure the work speed stability and cutting force stability; bars intensify reliable. Thereby, the cutting precise weight the endface quality is good, and a wide range of trenching. china bearing supplier