超大型軸承套圈滲碳后限形淬火夾具設(shè)計(jì)
發(fā)布時(shí)間：2019-03-19 16:18
【摘要】：近年隨著風(fēng)電長(zhǎng)足發(fā)展,風(fēng)力發(fā)電機(jī)傳動(dòng)系統(tǒng)也變得日趨龐大；作為傳動(dòng)環(huán)節(jié)中的重要零部件,軸承的尺寸也隨之猛增至現(xiàn)在的2.5米最大至4米。到目前為止,大型軸承套圈限形淬火夾具原理仍然是沿用自鎖錐面。然而隨著軸承套圈尺寸的不斷加大,軸承套圈對(duì)自鎖錐面施加的環(huán)周緊縮力也不斷增大,在生產(chǎn)中也越來(lái)越多地導(dǎo)致了脫模困難；同時(shí)由于夾具體積與軸承套圈體積正比增長(zhǎng),從而也大幅提升了夾具本身的制造難度；并且本來(lái)可以很容易在中小型軸承套圈限形夾具中實(shí)現(xiàn)機(jī)構(gòu)聯(lián)動(dòng),由于大型軸承套圈限形淬火夾具的體積過(guò)大,也變得不易實(shí)現(xiàn),生產(chǎn)中時(shí)常發(fā)現(xiàn)大型軸承套圈限形淬火夾具同步動(dòng)作困難,需要不斷調(diào)整修正。本論文基于大型軸承套圈的滲碳淬火夾具設(shè)計(jì)原理,深入剖析了大型軸承套圈的滲碳淬火夾具設(shè)計(jì)原理的利弊,最終探索并總結(jié)出針對(duì)超大型軸承套圈限形淬火夾具的設(shè)計(jì)方案。超大型軸承套圈限形淬火夾具將通過(guò)分布在不同方向的的若干組連桿機(jī)構(gòu)對(duì)軸承套圈進(jìn)行支撐,減小了夾具開合尤其是脫模時(shí)的作用力,使軸承套圈易于脫模；同時(shí)連桿機(jī)構(gòu)的應(yīng)用減小了夾具上單一零件尺寸,顯著降低了夾具制造難度；若干組連桿同時(shí)由芯軸統(tǒng)一驅(qū)動(dòng),從而實(shí)現(xiàn)夾具在各個(gè)方向上整體動(dòng)作一致。本論文通過(guò)實(shí)際試驗(yàn)方法,獲得了超大尺寸軸承套圈淬火過(guò)程中對(duì)夾具形成的環(huán)周壓力,并以此為基礎(chǔ)作為限形淬火夾具的受力設(shè)計(jì)輸入。本文的目標(biāo)是針對(duì)超大型軸承在限形淬火中遇到的困難,提出新的設(shè)計(jì)方案；并基于有限元應(yīng)力分析、公差分析等方法,設(shè)計(jì)出一套針對(duì)超大型軸承套圈的限形淬火夾具,最終設(shè)計(jì)方案滿足之前提出的改進(jìn)要求。
[Abstract]:In recent years, with the rapid development of wind power, the wind turbine transmission system has become increasingly large; as an important part of the transmission link, the size of the bearing has increased sharply to the current 2.5 meters to the maximum of 4 meters. Up to now, the principle of self-locking cone is still used in the limited-shape quenching fixture of large bearing ring. However, with the increasing size of bearing ring, the circumferential tightening force applied by bearing ring to the self-locking cone is also increasing, which leads to more and more difficult to release mold in production. At the same time, because the volume of fixture is proportional to the volume of bearing ring, the manufacturing difficulty of fixture itself is greatly improved. And it could have been easy to realize mechanism linkage in the small and medium-sized bearing ring shape-limiting fixture, because the volume of the large-scale bearing ring shape-limiting quenching fixture was too large, it also became difficult to realize. In production, it is often found that the synchronous action of the large bearing ring quenching fixture is difficult, and it needs to be adjusted and corrected continuously. Based on the design principle of Carburizing quenching fixture for large bearing ring, the advantages and disadvantages of Carburizing quenching fixture design principle for large bearing ring are deeply analyzed in this paper. Finally, the design scheme of the shape-limiting quenching fixture for the super-large bearing ring is explored and summarized. The limited-shape quenching fixture of the super-large bearing ring will support the bearing ring through several groups of linkage mechanisms distributed in different directions, which reduces the force of the clamp opening and closing, especially when the die is released, and makes the bearing ring easy to release the die. At the same time, the application of the linkage mechanism reduces the size of the single part in the fixture and reduces the difficulty of the fixture manufacture, and several groups of links are driven by the mandrel at the same time, so that the whole action of the fixture in all directions can be achieved in the same way. In this paper, the circumferential pressure of the clamp formed during the quenching process of the super-sized bearing ring is obtained by the practical test method, which is used as the input of the force design of the quenching fixture for the limited-shape quenching. The aim of this paper is to put forward a new design scheme in view of the difficulties encountered in the shape-limiting quenching of the super-large bearing. Based on the finite element stress analysis, tolerance analysis and other methods, a set of shape-limiting quenching fixture for super-large bearing ring is designed, and the final design scheme meets the requirements of improvement proposed earlier.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TG155.3
本文編號(hào)：2443683
[Abstract]:In recent years, with the rapid development of wind power, the wind turbine transmission system has become increasingly large; as an important part of the transmission link, the size of the bearing has increased sharply to the current 2.5 meters to the maximum of 4 meters. Up to now, the principle of self-locking cone is still used in the limited-shape quenching fixture of large bearing ring. However, with the increasing size of bearing ring, the circumferential tightening force applied by bearing ring to the self-locking cone is also increasing, which leads to more and more difficult to release mold in production. At the same time, because the volume of fixture is proportional to the volume of bearing ring, the manufacturing difficulty of fixture itself is greatly improved. And it could have been easy to realize mechanism linkage in the small and medium-sized bearing ring shape-limiting fixture, because the volume of the large-scale bearing ring shape-limiting quenching fixture was too large, it also became difficult to realize. In production, it is often found that the synchronous action of the large bearing ring quenching fixture is difficult, and it needs to be adjusted and corrected continuously. Based on the design principle of Carburizing quenching fixture for large bearing ring, the advantages and disadvantages of Carburizing quenching fixture design principle for large bearing ring are deeply analyzed in this paper. Finally, the design scheme of the shape-limiting quenching fixture for the super-large bearing ring is explored and summarized. The limited-shape quenching fixture of the super-large bearing ring will support the bearing ring through several groups of linkage mechanisms distributed in different directions, which reduces the force of the clamp opening and closing, especially when the die is released, and makes the bearing ring easy to release the die. At the same time, the application of the linkage mechanism reduces the size of the single part in the fixture and reduces the difficulty of the fixture manufacture, and several groups of links are driven by the mandrel at the same time, so that the whole action of the fixture in all directions can be achieved in the same way. In this paper, the circumferential pressure of the clamp formed during the quenching process of the super-sized bearing ring is obtained by the practical test method, which is used as the input of the force design of the quenching fixture for the limited-shape quenching. The aim of this paper is to put forward a new design scheme in view of the difficulties encountered in the shape-limiting quenching of the super-large bearing. Based on the finite element stress analysis, tolerance analysis and other methods, a set of shape-limiting quenching fixture for super-large bearing ring is designed, and the final design scheme meets the requirements of improvement proposed earlier.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TG155.3
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