現(xiàn)代SUV變速器設(shè)計(jì)【兩軸式變速器】

現(xiàn)代SUV變速器設(shè)計(jì)【兩軸式變速器】,兩軸式變速器,現(xiàn)代SUV變速器設(shè)計(jì)【兩軸式變速器】,現(xiàn)代,suv,變速器,設(shè)計(jì),兩軸式 附 錄 A Because the gearbox inputs stalk and exportation stalk with respectively of the speed revolve, transformation file match to exist a "synchronous" problem.2's revolving strong line of Nie of different wheel gear of speed to match by all means will take place to pound at collision and damage wheel gear.Therefore, the way that the old type gearbox shifts gear to want the adoption"two feet leave to match", rise the file stops over a short moment in the blank on schedule position, reducing the file has to accelerate in the blank on schedule position to reduce becoming of wheel gear soon bad.But this operation is more complicated, and is hard to control precision.Therefore the designer creates "synchronous machine", it makes through a synchronous machine will the Nie match of the wheel gear attain unanimously and turn soon but the smooth Nie match. When the close together file converts mutually, should adopt the truth of dissimilarity operation step to equally be applicable to move the circumstance that the wheel gear shifts gear, just former of treating and joining together the turning of Chi turn and coalescence set Cape speed have consistent request, and then of treating and joining together the line speed that the wheel gear Nie matches a point have consistent request, but basis of speed's analyzing principle is similar.The gearbox shifts gear an operation, particularly from upscale operate toward the shifting gear of low file more complicated, and very easy creation round Chi or the flower key impact between the chis.For the sake of simplification operation, and keep Chi from pounding at, can be shifting gear to establish a synchronous machine in the device.The inertial type synchronous machine is depending on rubbing a function realization is synchronous, above it the noodles establishes ad hoc organization to promise that the coalescence set isn't likely to get in touch with before attaining synchronously with the flower that need to be joined together key Chi turn, avoided Chi impact thus. 附 錄 B 由于變速器輸入軸與輸出軸以各自的速度旋轉(zhuǎn)，變換檔位時(shí)合存在一個(gè)"同步"問題。兩個(gè)旋轉(zhuǎn)速度不一樣齒輪強(qiáng)行嚙合必然會(huì)發(fā)生沖擊碰撞，損壞齒輪。因此，舊式變速器的換檔要采用"兩腳離合"的方式，升檔在空檔位置停留片刻，減檔要在空檔位置加油門，以減少齒輪的轉(zhuǎn)速差。但這個(gè)操作比較復(fù)雜，難以掌握精確。因此設(shè)計(jì)師創(chuàng)造出"同步器"，通過同步器使將要嚙合的齒輪達(dá)到一致的轉(zhuǎn)速而順利嚙合同步器有常壓式和慣性式。 　　目前全部同步式變速器上采用的是慣性同步器，它主要由接合套、同步鎖環(huán)等組成，它的特點(diǎn)是依靠摩擦作用實(shí)現(xiàn)同步。 　　接合套、同步鎖環(huán)和待接合齒輪的齒圈上均有倒角（鎖止角），同步鎖環(huán)的內(nèi)錐面與待接合齒輪齒圈外錐面接觸產(chǎn)生摩擦。鎖止角與錐面在設(shè)計(jì)時(shí)已作了適當(dāng)選擇，錐面摩擦使得待嚙合的齒套與齒圈迅速同步，同時(shí)又會(huì)產(chǎn)生一種鎖止作用，防止齒輪在同步前進(jìn)行嚙合。 　　當(dāng)同步鎖環(huán)內(nèi)錐面與待接合齒輪齒圈外錐面接觸后，在摩擦力矩的作用下齒輪轉(zhuǎn)速迅速降低（或升高）到與同步鎖環(huán)轉(zhuǎn)速相等，兩者同步旋轉(zhuǎn)，齒輪相對(duì)于同步鎖環(huán)的轉(zhuǎn)速為零，因而慣性力矩也同時(shí)消失，這時(shí)在作用力的推動(dòng)下，接合套不受阻礙地與同步鎖環(huán)齒圈接合，并進(jìn)一步與待接合齒輪的齒圈接合而完成換檔過程。