本文選題：單蝸桿雙蝸輪減速器 + 齒輪修形��； 參考：《中國地質(zhì)大學(xué)(北京)》2017年碩士論文

【摘要】：鉆機(jī)智能化和自動(dòng)化在鉆探技術(shù)發(fā)展背景下已經(jīng)成為現(xiàn)代鉆機(jī)設(shè)計(jì)的一個(gè)重要標(biāo)志。移擺管機(jī)構(gòu)會(huì)將豎直鉆桿有順序的、精確的擺放至下一作業(yè)點(diǎn),與人工操作過程類似�；诖诵枨�,對(duì)于平面機(jī)構(gòu)具有很大優(yōu)越性的空間開鏈機(jī)構(gòu)-機(jī)械手的研究進(jìn)入移擺管機(jī)構(gòu)的研究領(lǐng)域。(1)根據(jù)課題的自動(dòng)化鉆探的需求,對(duì)機(jī)械手抓取結(jié)構(gòu)進(jìn)行了設(shè)計(jì),并且對(duì)機(jī)械手使用的減速器、架體結(jié)構(gòu)及卡瓦等機(jī)構(gòu)進(jìn)行計(jì)算,完成工程圖的設(shè)計(jì)。(2)由于課題對(duì)操控性能要求較高,因此,箱體在滿足強(qiáng)度要求時(shí),應(yīng)盡量減輕質(zhì)量以提高系統(tǒng)的操控性能。采用ANSYS軟件對(duì)箱體進(jìn)行有限元分析,驗(yàn)證箱體的強(qiáng)度,并在此基礎(chǔ)上對(duì)材料選擇及箱體結(jié)構(gòu)的優(yōu)化用以減輕箱體的質(zhì)量,優(yōu)化結(jié)果為,總體質(zhì)量減少67.9%,箱體的應(yīng)力應(yīng)變均有所增大,但仍在材料的許用范圍內(nèi),且有一定的強(qiáng)度儲(chǔ)備。(3)為滿足結(jié)構(gòu)緊湊及抓取動(dòng)作的穩(wěn)定性,在減速器體積較小的情況下,提高減速器的承載能力為增強(qiáng)抓取穩(wěn)定性的一種有效的手段。采用ANSYS軟件對(duì)蝸輪蝸桿的接觸進(jìn)行有限元分析,并從材料的選擇及蝸輪修形的兩種方式對(duì)承載力進(jìn)行優(yōu)化,從接觸面的齒根線與齒頂線以及整個(gè)輪齒的應(yīng)力與應(yīng)變進(jìn)行分析。對(duì)蝸輪蝸桿接觸的優(yōu)化結(jié)果:最大應(yīng)力減小了7.2%,最大應(yīng)變減小了16.3%;應(yīng)力應(yīng)變區(qū)域明顯減小;集中應(yīng)力分布區(qū)域也明顯減少。(4)由于結(jié)構(gòu)為雙蝸輪配合使用,為提高抓取的準(zhǔn)確性,兩側(cè)蝸輪的運(yùn)動(dòng)應(yīng)有一定的同步性。采用UG的相關(guān)匹配接口將模型導(dǎo)入ADAMS中對(duì)蝸桿兩側(cè)蝸輪的同步性進(jìn)行研究。結(jié)果表明,兩側(cè)蝸輪的力矩輸出同步性較好,可以滿足課題需求。本文研究的意義是在減速器較小體積的條件下,通過對(duì)單蝸桿雙蝸輪減速的設(shè)計(jì)與優(yōu)化,提升減速器的承載力及減輕減速器的重量,提高系統(tǒng)操控性及抓取動(dòng)作的穩(wěn)定性。
[Abstract]:The intelligence and automation of drilling rig has become an important symbol of modern drilling rig design under the background of drilling technology development. The pipe-shifting mechanism will place the vertical drill pipe in sequence and accurately to the next operating point, similar to manual operation. Based on this requirement, the research of space open chain mechanism (manipulator), which has great superiority for planar mechanism, has entered the research field of pendulum mechanism. (1) according to the requirement of automatic drilling in the subject, the grab structure of manipulator is designed. The reducer, the frame structure and the knuckle mechanism used by the manipulator are calculated, and the design of the engineering drawing is completed. (2) because the task requires high control performance, the box body meets the strength requirement. The quality should be minimized to improve the control performance of the system. The finite element analysis of the box body is carried out by using ANSYS software, and the strength of the box body is verified. On this basis, the material selection and the optimization of the box structure are used to reduce the quality of the box body. The overall mass is reduced by 67.9, the stress and strain of the box are increased, but are still within the allowable range of materials, and there is a certain strength reserve. (3) in order to satisfy the compact structure and the stability of grab action, in the case of small volume of reducer, Improving the bearing capacity of the reducer is an effective means to enhance the grasping stability. The finite element analysis of the contact of worm and worm gear is carried out by using ANSYS software, and the bearing capacity is optimized from the selection of material and the modification of worm gear, and the stress and strain of tooth root line and tooth top line of contact surface as well as the whole gear tooth are analyzed. Optimization results of worm gear contact: the maximum stress decreases 7.2, the maximum strain decreases 16.3; the stress strain region decreases obviously; and the concentration stress distribution area is also significantly reduced. 4) in order to improve the accuracy of grasping, because the structure is a double worm gear, the maximum stress is reduced by 7.2%, and the maximum strain decreases by 16.3%. The motion of two sides worm gear should have certain synchronism. The synchronization of worm gear on both sides of worm is studied by introducing the model into ADAMS by using the correlation matching interface of UG. The results show that the torque output synchronism of the two side worm gears is good and can meet the needs of the subject. The significance of the study in this paper is to improve the bearing capacity of the reducer and reduce the weight of the reducer through the design and optimization of the deceleration of single worm gear and double worm gear under the condition of small volume of the reducer, and to improve the control of the system and the stability of the grasping action.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：P634.3

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