發(fā)布時(shí)間：2018-06-10 17:16

  本文選題：極坐標(biāo)插補(bǔ) + 油膜厚度��； 參考：《湖南大學(xué)》2016年碩士論文

【摘要】：武漢重型機(jī)床集團(tuán)有限公司所生產(chǎn)的立式車銑復(fù)合機(jī)床特點(diǎn)是精度高、切削扭矩大、工作臺(tái)承重能力強(qiáng)、加工規(guī)格大,本文對(duì)立式車銑復(fù)合機(jī)床的若干控制技術(shù)進(jìn)行了研究。針對(duì)立式車銑復(fù)合機(jī)床需要進(jìn)行端面銑削的加工工藝需求,本文設(shè)計(jì)了一種極坐標(biāo)插補(bǔ)加工技術(shù),并在MATLAB軟件中進(jìn)行了模擬仿真,仿真結(jié)果表明該項(xiàng)技術(shù)能夠滿足機(jī)床的加工精度。采用極坐標(biāo)插補(bǔ)技術(shù)可以將XY平面內(nèi)X軸、Y軸的兩直線軸聯(lián)動(dòng)轉(zhuǎn)換成X軸和旋轉(zhuǎn)軸C軸的聯(lián)動(dòng),解決立車沒有Y軸的問題,達(dá)到加工目的。針對(duì)重型立車需要工作臺(tái)承重能力強(qiáng)的特點(diǎn),本文研究了液體靜壓支承技術(shù),計(jì)算了靜壓導(dǎo)軌工作臺(tái)供油系統(tǒng)的流量,確定了導(dǎo)軌的油膜厚度與溫度、載荷、流量之間的關(guān)系。為了使油膜厚度處于一個(gè)良好的狀態(tài),設(shè)計(jì)了一個(gè)閉環(huán)控制系統(tǒng),并編寫了基于PLC的PID控制算法子程序塊。針對(duì)PID調(diào)節(jié)器調(diào)節(jié)參數(shù)固定、具有一定滯后性的不足,提出了基于模糊自適應(yīng)控制算法的技術(shù)方案,在MATLAB軟件中進(jìn)行了模擬仿真,驗(yàn)證了該方法的可性行,并搭建了一個(gè)靜壓導(dǎo)軌回轉(zhuǎn)臺(tái)實(shí)驗(yàn)平臺(tái),比較了實(shí)驗(yàn)數(shù)據(jù)與理論數(shù)據(jù)的差異,實(shí)驗(yàn)數(shù)據(jù)表明理論公式應(yīng)用準(zhǔn)確能夠應(yīng)用于工程實(shí)際中。本文計(jì)算了840DSL數(shù)控系統(tǒng)中模擬主軸編碼器速度分辨率,比較了使用TTL編碼器和1VPP編碼器的性能差異,確定了選型方案;依據(jù)公式詳述了距離碼光柵尺和距離碼圓光柵的回零原理,并將其應(yīng)用于西門子數(shù)控系統(tǒng)中,減少了機(jī)床回零時(shí)間。立式車床中橫梁需要在立柱導(dǎo)軌上做升降運(yùn)動(dòng)以滿足各種加工高度,本文對(duì)橫梁電機(jī)和軟起動(dòng)器進(jìn)行了計(jì)算選型,設(shè)計(jì)了一個(gè)橫梁同步保護(hù)裝置防范了橫梁傾斜運(yùn)行,詳述了橫梁運(yùn)行控制流程,確保運(yùn)行安全可靠。通過以上的研究,立式車銑復(fù)合機(jī)床的電氣系統(tǒng)功能完善,系統(tǒng)運(yùn)行安全可靠。
[Abstract]:The vertical turn-milling compound machine tool produced by Wuhan heavy Duty Machine tool Group Co., Ltd is characterized by high precision, large cutting torque, strong bearing capacity of worktable and large machining specification. Some control techniques of turn-milling compound machine tool are studied in this paper. In order to meet the need of machining process of vertical turn-milling compound machine tool, this paper designs a kind of polar coordinate interpolation machining technology, and simulates it in MATLAB software. The simulation results show that the technology can meet the machining accuracy of machine tools. By using polar coordinate interpolation technique, the two linear axes of X axis and Y axis in XY plane can be transformed into the linkage of X axis and rotation axis C axis, which solves the problem that there is no Y axis in the vertical car and achieves the purpose of processing. In view of the strong bearing capacity of the worktable, this paper studies the hydrostatic pressure supporting technology, calculates the flow rate of the oil supply system of the hydrostatic guide rail table, and determines the relationship between the oil film thickness of the guide rail and the temperature, load and flow rate. In order to keep the oil film thickness in a good state, a closed loop control system is designed, and a subprogram of pid control algorithm based on PLC is written. In view of the limitation of pid regulator with fixed adjusting parameters and certain lag, a technical scheme based on fuzzy adaptive control algorithm is put forward. The simulation is carried out in MATLAB software, and the feasibility of the method is verified. An experimental platform for static pressure guide rail turntable is built, and the difference between experimental data and theoretical data is compared. The experimental data show that the application of theoretical formula can be applied to engineering practice accurately. This paper calculates the speed resolution of the analog spindle encoder in 840DSL numerical control system, compares the performance difference between TTL encoder and 1VPP encoder, and determines the selection scheme. According to the formula, the principle of zero return of distance code grating ruler and distance code circle grating is described in detail, and it is applied to Siemens numerical control system to reduce the return time of machine tool. In the vertical lathe, the beam needs to move up and down on the guide rail of the column to meet the various processing heights. In this paper, the calculation and selection of the cross beam motor and soft starter are carried out, and a synchronous protection device for the cross beam is designed to prevent the beam from tilting. The operation control flow of the beam is described in detail to ensure the safety and reliability of the operation. Through the above research, the electrical system of the vertical turn-milling machine tool is perfect and the system is safe and reliable.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TG65

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 袁煒;;論帶距離編碼參考點(diǎn)標(biāo)志的增量式光柵尺[J];制造技術(shù)與機(jī)床;2013年05期

2 溫小亮;;西門子802D sl如何配置距離編碼器[J];電子世界;2013年02期

3 焦舟波;石紅瑞;;模糊PID控制在S7-300 PLC中的實(shí)現(xiàn)及應(yīng)用[J];工業(yè)儀表與自動(dòng)化裝置;2011年03期

4 呂琳;鄧明;李艷霞;王正立;;精沖機(jī)靜壓導(dǎo)軌的油膜剛度設(shè)計(jì)及控制[J];精密成形工程;2010年05期

5 張廣良;;極坐標(biāo)插補(bǔ)法在車削中心上加工端面輪廓零件的方法[J];新技術(shù)新工藝;2009年12期

6 李敏;沈晶巍;劉通;;ADI4在舊數(shù)控機(jī)床改造中的匹配功能應(yīng)用[J];制造技術(shù)與機(jī)床;2009年12期

7 王亞軍;陳東生;蒲潔;吉方;何建國;;雙電機(jī)驅(qū)動(dòng)升降機(jī)構(gòu)運(yùn)動(dòng)實(shí)時(shí)同步控制技術(shù)[J];組合機(jī)床與自動(dòng)化加工技術(shù);2009年09期

8 趙明;黃正東;王書亭;陳立平;;重型數(shù)控立車工作臺(tái)靜壓計(jì)算[J];機(jī)械工程學(xué)報(bào);2009年09期

9 杜宏祺;邢雨;高青玉;;雙柱立式車床橫梁同步控制保護(hù)系統(tǒng)的設(shè)計(jì)[J];制造技術(shù)與機(jī)床;2009年03期

10 邵俊鵬;張曉彤;;液體靜壓導(dǎo)軌油膜厚度的控制方案研究[J];節(jié)能技術(shù);2006年06期

，

本文編號(hào)：2003991