The design undertaken mainly from the following aspects : 1, mechanism ddesign : included the base and the joints : 2, trasmission mechanism design : adopted a synchronous toothelike transmission bell ; 3, balance system design : adopted springs and a brake and a lay air cylinder ; 4, design parameter and verify alculation ; 5, established motion equation by d - h method ; 6, simulated the motion locus by matlab software ; 7 ^ mapping out the part drawing or asesembly drawing
本設計主要是從以下幾個方面入手: 1 、機構設計:包括底座和臂關節的設計; 2 、傳動機構設計:將驅動電機安裝在底座上,利用同步
齒型帶、離合器傳遞手臂的動力;利用
齒輪傳動帶動底座回轉; 3 、平衡系統設計:採用了彈簧平衡系統、電磁式制動器和單向延時氣缸; 4 、設計參數和校核計算; 5 、用d ? h法建立運動學方程; 6 、利用matlab軟體對手臂的運動空間進行模擬; 7 、利用autocad2000繪圖:包括零件圖和裝配圖。
The results indicate that if the value of press stress is over certain figure, press stress and al plate ’ s thickness have little influence on sawtooth distortion for the same kind of sawtooth ; sawtooth distortion is well - regulated under static press, while it is irregular under impact press. bottom coating make great influence on bond strength of samples which can improve the value remarkably ; bonding mechanism of clad steel is mechanism of mechanical effect that sawtooth which is hooked occludes with al plate
結果表明:同種
齒型,當壓應力大於一定的值時,壓應力和覆板的厚度對
齒形的變化影響不大;靜壓下
齒形變化比較規則,鋸
齒頂端向一側彎曲成鉤狀;沖壓下
齒形比較凌亂,鋸
齒的頂端沒有明顯的變形;后處理對試樣的結合強度影響很大,打底試樣由於粘結層的作用,結合強度較高;機械作用機制是復合鋼板的主要復合機理,鋸
齒彎曲成鉤狀和鋁板形成機械咬合。
Through the simulation of the forming process, we can get the deformations, stress, strain, plastic flowing in sheets and the interface state under impact load and rolling load, the deformation of the sawtooth form and comparing to the initial state, the results above are expressed in computer animated way. and the effect of geometrical ( mainly different form, including 90 degree, isoceles triangle , 75 degree, and 1. 5 high and wide ), material and technical parameters on the bond strength are analyzed, also including the comparison of different sawtooth form. the optimum parameters are got
對雙金屬復合板成
型過程進行模擬,從而得到在沖擊載荷和軋輥壓力作用下基板和覆板的應力、應變分佈和塑性流動變形規律,復合后的
齒形的變形情況與初始
齒形形成對比,以動畫的方式模擬成
型過程,並分析了不同幾何參數(主要是不同的
齒型,其中包括直角
齒型、等腰
齒型、 75度
齒型、 1 . 5高寬
齒型) 、材料參數、工藝參數對復合強度的影響,以及不同
齒型的變形對比以及
齒型對復合情況的影響,提出最優
齒型、最優工藝參數,有效地指導了實驗。
After considering the curvature effects, we find that armchair tubes are yet metallic with no band gaps. as for metallic zigzag tubes and metallic chiral tubes, a curvature - induced band gap and two accessional von hove singularities can be found. the width of the band gap depends on its tube - diameter and chirality
我們發現,在考慮捲曲效應以後,扶手
型管不產生帶隙,仍為金屬性管;而對于鋸
齒型金屬性管和螺旋
型金屬性管,因捲曲誘導在費米能附近產生一個窄的帶隙以及兩個附加的范?霍夫奇點峰。
4. the effects of geometrical parameters of microfin tubes on the in - tube boiling heat transfer coefficients is analyzed. in addition, the principles on intensifying heat transfer in microfin tube is also analyzed
對r290和r404a ,通過研究koyama和thome關聯式,分析了內螺紋管
齒高、螺旋角等
齒型參數對工質沸騰換熱性能的影響。
Most bearing flat - steel can be made into serrated steel grating. this make the grating have the ability of non - slip. if the user needs serrated grating, please specify as ordering
絕大多數受荷扁鋼都可以製成
齒型鋼格,這樣可增強鋼格板的防滑能力。需要
齒型鋼格板者,請在訂貨時指明。
Thereby measures for improvement are put forward : ( 1 ) adopting a small wheel to replace the steel ball of the ball type unit to ensure more reliable motion of the creeping device ; ( 2 ) applying expansible metallic ring replacing the step - by - step teeth on tooth type unit ; ( 3 ) fixing a sensor in the reversing device for obtaining the information of motion and wear of the creeping device
為此,提出改進措施: 1 .對球
型步進式清蠟器採用帶穿軸的小輪代替鋼球,可使爬行器運動更可靠; 2 .對
齒型步進式清蠟器,採用可脹緊金屬環代替步進
齒,金屬環依靠抽油機的沖程力脹大后使爬行器固定,反沖程力使金屬環縮小; 3 .將傳感器裝在換向器內,根據信號的時間間隔判斷爬行器的運行速度及磨損等情況。
We find that the relations between the electronic effective mass of lowest - lying conduction band and wave vector are resemble, not only for narrow - gap semiconductor zigzag tubes but also for wide - gap semiconductor zigzag tubes. the electronic effective masses at bottom of lowest - lying conduction band depend on their tube - diameters
我們發現,無論是鋸
齒型窄隙半導體管還是鋸
齒型寬隙半導體管,同一類管的最低導帶的電子有效質量隨波矢變化的規律基本相同,且其導帶底的電子有效質量隨管徑的增大而減小。
This paper investigates the vibration features of various typical gearbox faults including profile error, broken tooth, symmetrical tooth wear, serious unbalance of shaft, on the base of theoretic analyses and plenty of cases. it provides guide for further gearbox - fault - automatic - diagnosis
在理論分析和大量的工程實例基礎上,提取了包括
齒型誤差、斷
齒、
齒輪均勻磨損、軸嚴重不平衡、箱體共振五種
齒輪箱典
型故障的振動特徵,為實現
齒輪箱故障自動診斷提供了理論依據。
Taking the kinematics and dynamics problems of pallet cars on an even - tooth sintering machine into comprehensive consideration, a new kind of tooth shape, which could bring variational acceleration to a single pallet car, had been put forward
摘要綜合考慮偶數
齒燒結機臺車的運動學和動力學問題,提出了能使單輛臺車產生變加速運動的新
型齒型。
The automatic model mr166 is specially for resharpening of carbide tipped circular saw blades, this girinder can be pre - selction of number of counting devide. three kinds of saw - teeth ( flat, altemate, trapezoidal saw - teeth etc. ) can also be attained on it
Mr166
型自動磨鋸機是專門修磨鑲硬質合金圓鋸中的機床,該機具有預選
齒數,並藉動計數器裝置可自動停機,同時可磨平
齒、交錯
齒、梯
型齒等三種
齒型。
Zigzag in line package
鋸
齒型插腳式管殼
Aerospace series - studs, in titanium alloy ti - p64001, with serrated locking ring in corrosion resisting steel - design standard
航空航天系列.鈦合金ti - p64001制帶鋸
齒型鎖環的耐腐鋼螺柱.設計標準
Aerospace series - studs, in titanium alloy ti - p64001, with serrated locking ring in corrosion resisting steel - installation and removal procedure
航空航天系列.鈦合金ti - p64001制帶鋸齒型鎖環的耐腐鋼螺柱.安裝和拆卸程序