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數(shù)控車床外文翻譯---數(shù)控車床實(shí)驗(yàn)系統(tǒng)的主軸變頻調(diào)速系統(tǒng)設(shè)計(jì)分析-數(shù)控設(shè)計(jì)(更新版)

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【正文】 1 Spindle variable speed system design and analysis for CNC lathe experiment System ZHENG Yanqin, TANG Xuezhe ( School of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China) Abstract: Mainly for the demand of designing highaccuracy, fastresponse CNC lathe spindle variable speed system, a speed control proposal of fitting frequency motor and transducer together was raised via analyzing the basic principles and frequency of the variable frequency speed control. According to the CNC lathe experimental system operating conditions, the lathe cutting force and spindle motor power were calculated, evidence for choosing spindle adjustable frequency motor of experiment system was provided. In the light of the selected motor character, the basic principle of choosing transducer was proposed, then a transducer was selected which matched the frequency motor in the rated capacity and rated current. It is a highperformance and generalpurpose voltage transducer using vector control. Finally, briefly the design ideas for CNC lathe experimental platform were described. The frequency motor and transducer are reasonable, and its adjustable performance and starting torque can meet the requirements of the experimental system. Key words: variable frequency speed control。 D F feed the workpiece diameter. When turning, FZ than FY, FX is much greater, and FY, FX direction movement speed is small, therefore, FY, FX power consumption is very small (only 1% ~ 2% ), it can be ignored. Used in lathe cutting force calculation formula is as follows: FZ = 9. 81CFz fyFy through the conversion device of voltage boosting, ensure the motor in 5 Hz rated output torque and the motor for heating and burning. 3 inverter type selection n the CNC lathe spindle speed control experimental system, inverter selection should pay attention to : 1 converter is to realize constant pressure control and constant current control。 UM motor voltage, V。 hydraulics, 2020, 35 ( 1): 6062. [ 3] Zhu Quanyin, Han Laiji, Fu Yunqiang, et al. Numerical control machine tool spindle speed control system theory and application [ J ]. Coal mine machinery, 2020, 30 ( 9): 194196. [ 4] Chen Hequan. Frequency basic method ( J ). Industrial automation, 2020 ( 2): 122125. [ 5] Huang Guanyao, Liu Baohe. Mechanical manufacturing technology base [ M ]. Tiianjin: Tianjin University press, 1999 [ 6] Helped Yu Peng, Huang Shou. The threephase induction motor variable frequency speed regulating effect ( J ). The explosionproof motor, 2020 ( 3): 69. 6 數(shù)控車床實(shí)驗(yàn)系統(tǒng)的主軸變頻調(diào)速系統(tǒng)設(shè)計(jì)分析 鄭艷琴 , 唐學(xué)哲 ( 浙江工業(yè)大學(xué)機(jī)械工程學(xué)院 , 浙江杭州 310014) 摘要 :主要針對要求高 精度 、 快響應(yīng)的數(shù)控車床主軸調(diào)速系統(tǒng)的設(shè)計(jì)要求 , 通過對變頻調(diào)速的基本原理和變頻方式的分析 , 提出了 變頻電機(jī)與變頻器組合的調(diào)速方案 。 數(shù)控車床 0 引言 隨著現(xiàn)代工業(yè)技術(shù)的發(fā)展 , 變頻調(diào)速技術(shù)在機(jī)械加工中已得到廣泛的應(yīng)用 。 交流 交流變頻就是改變晶閘管導(dǎo)通控制角 α 的大小和變化的頻率 , 實(shí)現(xiàn)交 流 交流的電壓和頻率的調(diào)整 。 fyFy FX— 進(jìn)給力 。 則切削功率 Pm = Fz m, 額定電流為 12 A, 可與同類變頻裝置配套 ,互換性 、 通用強(qiáng) , 其功率 、 底腳安裝尺寸和中心高等對應(yīng)指標(biāo)與 Y 系列異步電機(jī)完全一致 , 與實(shí)驗(yàn)系統(tǒng)環(huán) 境要求相符 。 ④ 考慮到高次諧波會(huì)導(dǎo)致輸出電流增大 , 變頻器驅(qū)動(dòng)電機(jī) , 特別是電抗小的高速電機(jī) , 其容量應(yīng)略大于普通電機(jī)的選型 。 UM— 電動(dòng)機(jī)電壓 , V。 目前 ,矢量控制型變頻器已經(jīng)通用化 , 對于要求高精度 、 快響應(yīng)的數(shù)控車床的實(shí)驗(yàn)系統(tǒng) ,采用矢量控制高性能型通用變頻器是一種很好的方案 [ 11], 而且中 、 小容量變頻器以電壓型變頻器為主 , 此實(shí)驗(yàn)系統(tǒng)選用三菱 FRA7403. 7KCHT 系列變頻器 。 出現(xiàn)的故障能在面板上體現(xiàn)出來 , 使系統(tǒng)更加直觀 , 便于數(shù)控車床的檢測 、 維修及故PCN≥ kPMη cos = 1. 05 5. 50. 85 0. 75 = 9. 0( kVA) PCN≥ k 3UMIM 10 - 3 = 8. 3( kVA) ICN≥ kIM = 1. 05 12 = 12. 6( A) 9 障排除等方面的學(xué)習(xí) 。 參考文獻(xiàn) [ 1] 丁金福 , 虞付進(jìn) . 變頻調(diào)速技術(shù)在數(shù)控車床中的應(yīng)用 [ J] . 新技術(shù)新工藝 , 2020( 5) : 1315. [ 2] 周虹 , 周文軍 . 數(shù)控車床的主軸變頻調(diào)速實(shí)現(xiàn) [ J] . 機(jī)床與液壓 , 2020, 35( 1) : 6062. [ 3] 朱全印 , 韓來吉 , 付云強(qiáng) , 等 . 數(shù)控機(jī)床主軸變頻調(diào)速控制系統(tǒng)原理及應(yīng)用 [ J] . 煤礦機(jī)械 , 2020, 30( 9) : 194196. [ 4] 陳和權(quán) . 變頻調(diào)速的基本方法 [ J] . 工礦自動(dòng)化 , 2020( 2) : 122125. [ 5] 黃觀堯 , 劉保河 . 機(jī)械制造工藝基礎(chǔ) [ M] . 天津 : 天津大學(xué)出版社 , 1999. [ 6] 扶蔚鵬 , 黃守道 . 變頻調(diào)速對三相感應(yīng)電動(dòng)機(jī)的影響 [ J] . 防爆電機(jī) , 2020( 3) : 69.
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