差動變速器、差速器的設計【含6張CAD圖紙、說明書】
差動變速器、差速器的設計【含6張CAD圖紙、說明書】,含6張CAD圖紙、說明書,差動,變速器,差速器,設計,CAD,圖紙,說明書
Gear reducer based on U G 3 d entity model and movement simulation
Abstract: this paper introduces the final version with UG software UG NX MOSLING module gear reducer for the three-dimensional entity model, the main parts including shaft, gear, gear, shaft, the lower housing, on housing and assembly. Finally in the MOTION module of UG assembly model for the MOTION simulation.
Key words: UG; Three dimensional entity modeling; Gear reducer; The simulation
Chinese classification number: TH16 literature identifier: A
UG is a three-dimensional entity model in the integration of CAD/CAM/CAE technology and is widely used in computer aided design, analysis, manufacturing software. In this article, there are a few problems that should be paid attention to is: the involute gear tooth profile model, when operating hollow-out style cover, gear position between the shaft and gear assembly.
1 drawing involute tooth profile of the gear
On the other hand gear involute tooth profile gear in UG (3) the \"expression\" in the drawing, the involute gear teeth with vc + + 6.0 configuration file articles saved coordinate scheme and the corresponding data file tooth profile face value, and define spline drawing involute tooth profile gear use \"dot\" read from the file.
Involute polar parameter equation is
Will rk and the expansion of the substitution and the expression of trigonometric functions, can be obtained:
Here is in the K point of involute tooth profile radius, Angle is involute in AK, is radius of base circle, is at the K point of pressure Angle.
Figure 1, figure 2
With vc + + 6.0 program to change from 0 to 180 K (K +), you can get corresponding Xk and Yk, and save the corresponding data file JKX. Dat, as shown in figure 1.
In UG with insert - > curve - > simulation in the main menu, click the \"by\" button will pop up dialog box, and then the system displays as shown in figure 2 are connected by a spline. Click the \"take from the file\" button and select the aforementioned data file JKX. Dat, can get the corresponding involute as shown in figure 3.
Figure 3
Due to tooth thickness and reference circle tooth space width is equal to the gear tooth and tooth space is quite relative central Angle, then the opposite half tooth thickness is central Angle, that is, z represents the number of teeth, should be XC shaft rotation and through the expression of calculate, Angle is due to the reference standard gear pressure Angle for, should be XC shaft rotation. On the XC shaft drawing a straight line, and then select the line as the centerline of the mirror, \"cable\" on line \"mirror\" to mirror involute, the tooth profile surface and the radius of addendum Angle is, m as the modulus, is the nominal pressure Angle, is the coefficient of tooth bottom. Finally, you can get the gear as shown in figure 4, the three-dimensional entity model. .
Figure 4
Similarly, you can get the gear involute gear shaft contour.
2 when the cover is modeling some problems deserve attention
Hollow cap to cover the entire model, completed the receive part of the entity, can't fully perfect entity. In this article, we use \"hollowing out\" in the \"area\" and the coverage can be divided into two parts: the bearing seat, and raised levels and boarding and can join together is a part of them; The rest is another part, and the hollow. The key point is to join before hollowing out, and must be after the hollowing out. We believe that the complex system should be broken down into simple, and hollowed out respectively, and then join.
3 the position of the gear shaft and gear assembly
Between gears and gear shaft axial position when in the assembly is to determine, so the interference may occur between the teeth. In UG, there are eight types of restrictions, such as: gear, alignment, Angle, parallel, perpendicular, center, distance and tangent, but they are not sure the two gear meshing relationship. Therefore, it is necessary when the entity model of gear shaft and gear design drawing the relative position. We paint in the assembly process of the gear shaft centerline with the centerline of the gear space and two lines should be kept parallel to each other, can avoid the interference between the tooth and. We have installed parallel to the edge line of above two lines respectively, with parallel restriction relationship, so, two parallel lines may be more. Therefore, tooth interference will not occur in the process of eating.
We have completed the reducer is a major component of three-dimensional entity model. Then, let's do it in the motion simulation. First of all, in the case of establishing motion analysis, gear shaft and bearing inner ring as the first connection; Shaft, the gear, had been fixed distance ring and inner ring bearings as the second link. Then, established the joint movement of the unit. That is established between the gear shaft and gear rotary separately. Finally, set the composite gear rotary movement one and two. Select kinematic/dynamic analysis on the picture, and insert the time and steps, we can get the gear reducer movement simulation.
基于 U G 的減速器三維實體模型和運動仿真
摘要:本文介紹了用UG軟件的最終版UG NX的MOSLING模塊對減速器進行了三維實體造型,主要零件包括軸、齒輪、齒、輪軸、下箱體、上箱體及相應的裝配。最后在UG的MOTION模塊中對裝配模型進行了運動仿真。
關鍵詞:UG;三維實體造型;減速器;仿真
中文分類號:TH16 文獻標識碼:A
UG是三維實體模型于一體的CAD / CAM/ CAE技術及廣泛應用于全球的計算機輔助設計、分析、制造軟件。在這篇文章中有幾個問題應注意的是:漸開線齒齒輪輪廓模型、當操作時鏤空造型的封面、齒輪軸和齒輪之間的裝配時的位置。
1 繪制漸開線齒廓齒輪齒
另一方面齒輪漸開線齒廓齒可在UG〔3〕里的“表達”繪制,這個漸開線齒輪齒牙用VC++ 6.0配置文件的文章保存協(xié)調(diào)方案和相應的數(shù)據(jù)文件中齒廓面價值,并用定義樣條繪制漸開線齒廓齒輪使用“從文件中讀點”。
漸開線極坐標參數(shù)方程是
將和代入和三角函數(shù)表達式的擴展,可得到:
這里的是在K點處的漸開線齒形半徑,是漸開線在AK段得角度,是基圓半徑,是在K點處的壓力角。
圖1 圖2
用VC++ 6.0程序來改變從0到180改變(K+K),可以得到相應的Xk和Yk,并保存相應的數(shù)據(jù)文件jkx . dat,如圖1所示。
在UG的主菜單中有插入→曲線→仿真,單擊“通過點”按鈕會彈出對話框,然后系統(tǒng)顯示如圖2通過點樣條。單擊“從文件中取點”按鈕并且選擇前面提到的數(shù)據(jù)文件jkx . dat,可以得到如圖3中相應的漸開線。
圖3
由于齒厚和參考圓齒空間寬度是相等的,齒輪的齒與齒的空間相對圓心角是相當?shù)?,那么相反的半齒厚中心角是,即,z代表齒數(shù),XC軸應旋轉(zhuǎn)并且通過的表達式算出,角是由于參考標準齒輪壓力角為,XC軸應該旋轉(zhuǎn)。在XC軸上繪制一條直線,然后選擇這條線作為鏡像的中線,用“已有線”在“鏡像線”來鏡像漸開線,在齒廓面和齒頂?shù)陌霃浇鞘?,m為模數(shù),是公稱壓力角,是齒底系數(shù)。最后,可以的得到如圖4齒輪的三維實體模型。.
圖 4
同理,可以得到齒輪漸開線齒輪軸輪廓。
2 當覆蓋建模是有些問題應該得到重視
空心蓋在完成了覆蓋整個模型,可以得到部分實體,不能得到充分完美的實體。此文中,我們利用“空心化”里的“區(qū)域”和將覆蓋分為兩部分:軸承座,突起的水平和寄宿而且可以聯(lián)接在一起的是其中的一部份;其余的是另外一部分,和空心分離的。這關鍵點就是在空洞化之前聯(lián)接,并且必須在空洞化之后。我們認為,復雜的機構(gòu)應當分解為簡單的機構(gòu),并分別挖空,然后再聯(lián)接。
3 齒輪軸和齒輪裝配時的位置
齒輪和齒輪軸之間的軸向位置當在組裝是去確定的,所以干擾可能發(fā)生在齒間。在UG中,有八種類型的限制,例如:嚙合、對齊、角度、平行、垂直、中心、距離和正切,但他們都不確定兩個齒輪的嚙合關系。因此,有必要在齒輪軸和齒輪的實體模型設計時繪制相對位置。在裝配過程中我們繪制齒輪齒軸中心線與中心線空間齒輪齒和兩行應保持相互平行,所以干擾可避免與齒間。我們一直與邊緣線以上兩行分別平行安裝,帶平行制約的關系,所以,兩直線可能更平行。因此,輪齒在吃過程中不會發(fā)生干擾。
我們完成了減速器三維實體模型的主要組成部分。然后,我們來做它的運動仿真。首先,在建立運動分析的情況下,齒輪軸和軸承內(nèi)圈的作為第一個聯(lián)接;軸、齒輪、已固定距離的環(huán)和相應的內(nèi)圈軸承作為第二聯(lián)接。接著,成立了聯(lián)合運動的單位。即成立了齒輪軸和齒輪之間的分開回轉(zhuǎn)。最后,設置復合齒輪的回轉(zhuǎn)一和二運動。選擇運動學/動力學分析圖畫,并且插入時間和步驟,我們可以得到減速器的運動仿真。
收藏