Machining method for neodymium iron boron inclined tile magnetic sheets

Abstract

The invention discloses a machining method for neodymium iron boron inclined tile magnetic sheets. The machining method comprises the steps that neodymium iron boron blanks with the parallelogram cross sections are ground into qualified neodymium iron boron inclined tile semi-finished products; the neodymium iron boron inclined tile semi-finished products are fixed to an arc multi-wire cutting machine material plate, and the arc multi-wire cutting machine material plate is provided with stations for containing the neodymium iron boron inclined tile semi-finished products. Each station comprises an obliquely-arranged bottom supporting part and a vertically-arranged side supporting part. The neodymium iron boron inclined tile semi-finished products are right placed on the stations, and a plurality of empty wire grooves in the direction of the cross sections of the neodymium iron boron inclined tile semi-finished products are formed in the bottom supporting parts at equal intervals; and the arc multi-wire cutting machine material plate is arranged on an arc multi-wire cutting machine platform, the steel wire arc face cutting program is set, a plurality of steel wires cut the neodymiumiron boron inclined tile semi-finished products along the set arc line, the neodymium iron boron inclined tile semi-finished products are cut into the multiple neodymium iron boron inclined tile magnetic sheets, and the precision of inclined tiles is guaranteed through the accurate inner and outer arc grinding procedures. According to the method, the machining speed can be increased, the machining cost and blank losses are reduced, and the product machining precision and the surface quality can be guaranteed as well.

Description

technical field [0001] The invention belongs to the processing field of magnetic materials. More specifically, the present invention relates to a processing method for sintered NdFeB ramp tiles. Background technique [0002] NdFeB permanent magnet materials are widely used in electro-acoustic telecommunications, motors, instruments, nuclear magnetic Devices and equipment for permanent magnetic fields such as resonance, magnetic levitation, and magnetic sealing are especially suitable for manufacturing various high-performance products, such as tile shapes for permanent magnet traction motors, especially inclined tiles. [0003] The tile-shaped magnetic product is a hexahedral structure, which is composed of two arc surfaces, two opposite sides and two axial end faces respectively located in opposite positions. axis parallel. Compared with the straight tile magnetic sheet, the inclined tile magnetic sheet is a great progress in the permanent magnet motor industry. The purp...

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Problems solved by technology

At present, there are two processing methods for inclined tile magnetic sheets: one is to use tapered wire electric discharge processing, which is difficult to guarantee its consistency and accuracy. Due to the existence of a metamorphic layer of about 0.1mm in electric sparks, the magnetic properties in a unit volume are not affected. There is a certain reduction effect, and the processing speed is slow, the efficiency is low, and the cost is high

The second is to use EDM to cut out the straight tile magnetic sheet or use the method of pulling out the tile to take out the straight tile magnetic sheet, and grind the straight edge of the straight tile to the beveled edge through the tooling. This method is also slow in processing speed, low in efficiency, and wasteful. billet

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