本文選題：雙驅(qū)動(dòng)　切入點(diǎn)：滾滑復(fù)合導(dǎo)軌　出處：《南京理工大學(xué)》2015年碩士論文

【摘要】：隨著高檔數(shù)控機(jī)床的發(fā)展,應(yīng)對高速重載工作條件的能力越來越受到重視。傳統(tǒng)的滾動(dòng)導(dǎo)軌和滑動(dòng)導(dǎo)軌由于自身特性,不能獨(dú)立應(yīng)對這樣的工作條件。同樣,雙絲杠驅(qū)動(dòng)具有剛度高和響應(yīng)速度快等優(yōu)點(diǎn),相較于單絲杠驅(qū)動(dòng)可以更好的滿足高速重載數(shù)控機(jī)床進(jìn)給系統(tǒng)的要求。因此,本文針對一種新型雙驅(qū)滾滑復(fù)合導(dǎo)軌進(jìn)給系統(tǒng)及其動(dòng)態(tài)特性的研究具有十分重要的意義。本文基于雙驅(qū)滾滑復(fù)合導(dǎo)軌進(jìn)給系統(tǒng)的功能要求,對于滾滑復(fù)合導(dǎo)軌結(jié)構(gòu)進(jìn)行設(shè)計(jì),同時(shí)對進(jìn)給系統(tǒng)工作臺等零件進(jìn)行了靜力學(xué)分析和拓?fù)鋬?yōu)化,最終研制了新型進(jìn)給系統(tǒng)試驗(yàn)臺。建立模態(tài)試驗(yàn)系統(tǒng),對進(jìn)給系統(tǒng)進(jìn)行模態(tài)試驗(yàn),采集到試驗(yàn)臺各階振型和頻率。提出了一種基于環(huán)形虛擬材料層的圓柱結(jié)合部動(dòng)態(tài)特性建模方法。并將應(yīng)用了新型建模方法的有限元仿真結(jié)果與模態(tài)試驗(yàn)結(jié)果對比,誤差絕對值平均值只有6.7%,驗(yàn)證了新型建模方法的準(zhǔn)確性�；趩巫杂啥日駝�(dòng)理論,建立了消除基礎(chǔ)部件位移影響的進(jìn)給系統(tǒng)結(jié)合部動(dòng)態(tài)特性參數(shù)測試系統(tǒng)和識別方法。通過變量控制試驗(yàn),得到了不同工況下進(jìn)給系統(tǒng)結(jié)合部動(dòng)態(tài)特性參數(shù)。分析了參數(shù)在不同工況下變化的規(guī)律和原因。
[Abstract]:With the development of high-grade NC machine tools, more and more attention has been paid to the ability to deal with high-speed and heavy-load working conditions.Because of their own characteristics, the traditional rolling guide and sliding guide can not independently deal with such working conditions.In the same way, double screw drive has the advantages of high stiffness and fast response. Compared with single lead screw drive, it can better meet the requirements of high speed and heavy load CNC machine feed system.Therefore, it is of great significance to study the feed system and its dynamic characteristics of a new type of double drive rolling slide composite guideway.In this paper, based on the functional requirements of the double drive rolling slide composite guideway feed system, the structure of the rolling slide composite guide rail is designed, and the statics analysis and topology optimization of the feed system worktable and other parts are carried out.Finally, a new feed system test-bed is developed.The modal test system was set up, and the mode test of the feed system was carried out, and the vibration modes and frequencies of each order of the test bed were collected.A method for modeling the dynamic characteristics of cylindrical joints based on annular virtual material layer is presented.The finite element simulation results using the new modeling method are compared with the modal test results, and the average absolute error is only 6.7, which verifies the accuracy of the new modeling method.Based on the vibration theory of single degree of freedom, a testing system and identification method for dynamic characteristic parameters of feed system joint are established to eliminate the influence of displacement of foundation parts.Through variable control test, the dynamic characteristic parameters of feed system are obtained under different working conditions.The law and reason of the change of parameters under different working conditions are analyzed.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TG659

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本文編號：1722771