基于注塑機殼的伺服電機性能分析
王東
(南京埃斯頓自動化股份有限公司，江蘇 南京 211106)
摘 要：為了降低伺服電機制作成本和減小體積，提出采用注塑機殼的伺服電機設(shè)計方法，對定子鐵芯拓?fù)渲匦略O(shè)計，增大定子鐵芯外徑，從而縮短電機軸向長度?；陔姶呸D(zhuǎn)矩最大和轉(zhuǎn)矩脈動最小的原則，完成注塑電機結(jié)構(gòu)優(yōu)化，并確定尺寸；分析有限元計算結(jié)果發(fā)現(xiàn)，采用注塑的機殼的電機轉(zhuǎn)矩顯著增大；縮短注塑電機的軸向尺寸，使其轉(zhuǎn)矩性能與傳統(tǒng)金屬機殼電機轉(zhuǎn)矩一致，注塑電機體積減小了7.2%，電機損耗進一步降低，節(jié)能效果和運行效率也得到改善，并能降低電機批量化制作成本。
關(guān)鍵詞：伺服電機；金屬機殼；注塑機殼；有限元計算
中圖分類號：TM383.4 文獻標(biāo)識碼：B 文章編號：1007-3175(2021)02-0058-04
Servo Motor Performance Analysis Based on Injection Molding Casing
WANG Dong
（Nanjing Estun Automation Co., Ltd, Nanjing 211106, China）
Abstract: In order to reduce the production cost and volume of the servo motor, the design method of the servo motor using the injection molding casing (IMC) is proposed, it redesign the stator core topology to increase the outer diameter of the stator core, thereby shortening the axial length of the motor. Firstly, based on the principle of maximum electromagnetic torque and minimum torque ripple, the structure of IMC motor is optimized and the size is determined. Then, the finite element analysis results show that the torque of IMC motor increases significantly. Finally, the axial size of the IMC motor is shortened, so that its torque performance is consistent with that of the traditional metal casing (TMC) motor. The volume of the IMC motor is reduced by 7.2%, the motor loss is further reduced, the energy-saving effect and operating efficiency are also improved, and the cost of mass production of the motor can be reduced.
Key words: servo motor; metal casing; injection molding casing; finite element
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