The iron core is an important part of motor products, which are generally made of silicon steel plates with a thickness of 0.35 mm and 0.5 mm. Core stamping manufacturing equipment is important in all aspects of motor manufacturing. Currently, China’s high-speed precision stamping iron filing and core are automatically rivet, iron core is 3 rows, iron core twist groove and rotary rivet, iron core double truss rivet, iron core double row rivet, twist groove rivet, semi-circular stator core rivet, Stator core multi-stack,
For example, the combination of long straight stator core coil and laminated rivet high-speed precision stamping production technology is not inferior to international advanced technology.
Among them, the 3-core high-speed precision stamping manufacturing process for wedge-shaped rivet products is a core material of 50W470 silicon steel plate with a material thickness of 0.5 mm and a material width of 307.5 mm.
These include material take-up equipment, S-leveling equipment, material supply equipment lubrication equipment, high-speed precision presses, and large-scale precision progressive dies. Nail holes for automatic punching guides, rotor piece rivet processing holes, rotor marking holes, rotor weighing holes, rotor groove shapes, rotor plate step holes, rotor plate stacking points, rotor plate holes, rotor chip blanking stack rivets and torsion grooves, The stator chip notch, stator chip marking hole, stator piece weighing hole, stator groove shape, stator plate stack rivet point, stator piece internal hole, and stator parts are punched and riveted for multi-station multi-process continuous punching. It is done and three sets of stator core products are completed at once. The thickness of the core stack is 105 mm. The outer diameter of the stator core is 110.52 mm, and the outer diameter is 55.1 ± 0.01 / 0.02 mm.
It is produced by a large high-speed precision press with a production capacity of 300 tons. The stamping speed is changed from 280 times per minute to 320 times, and the core product is automatically output during the stamping process.
Link to this article：Motor shaft core manufacturing technology
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