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本文讨论小功率电动机半闭口槽子加工问题,并介绍几项新加工方法的试验情况。一、转子加工中的问题小功率笼型异步电动机的杂散损耗,约占总损耗10％以上,其中由高次谐波在转子中产生的损耗,约占杂散损耗的90％以上。这种损耗与转子加工质量有密切的关系。由于转子表面切削,刀具要同时切削铝和钢,因此,在软铝处容易切削过深,而且使铁心迭片向铝的方向产生流动,有时甚至造成槽口被流动的迭片短接,如图1所示。
This article discusses the low-power motor half-closed slot processing problems, and introduces several new processing methods of the test situation. First, the rotor processing problems Small power cage induction motor stray loss, accounting for more than 10% of the total loss, of which the higher harmonic generated in the rotor loss, accounting for more than 90% of stray losses. This loss and the rotor processing quality are closely related. Due to the cutting of the rotor surface, the tool is to cut aluminum and steel at the same time. Therefore, it is easy to cut deep in the soft aluminum, and the core lamination flows in the direction of aluminum and sometimes even causes the notch to be shorted by the flowing lamination, Figure 1 shows.