Based on the method of numerical simulation, the diameter of steel billet, entrance half angle of concave die and the dimension of spline were analyzed for the forming force on the spline processing with the help of a rigid-plasticity finite element software Deform 3D.

借助剛塑性有限元軟件Deform-3D欧美不卡高清视频，采用數(shù)值模擬的方法分析了矩形花鍵軸冷擠壓過(guò)程中66j8在线视频观看，坯料直徑、凹模入模半角及鍵齒尺寸對(duì)花鍵成形力的影響。

In the hydraulic counter pressure drawing,with a blank being pushed to a punch surface formed by higher fluid pressure,a good die fittingness of shells and a high accuracy of its inner diameter can be obtained.

充液拉深成形中自拍视频网，由于高壓液體緊緊將毛坯貼向凸模表面色哟哟最新网站入口，因而零件具有良好的貼模性并能獲得很高的內(nèi)徑精度。

The influencing factor analysis shows that the formability window obviously expands with the decreasing of the drawing ratio and the increasing of the normal anisotropical coefficient r -value and the die profile radius, but the effect of the hardening exponent n -value on formability window is not obvious.

而影響因素分析顯示：隨著拉深比降低www.9999高清黄色、厚向異性系數(shù)增加和凹模圓角半徑增大猛男好爽好爽男人天堂，成形窗口明顯擴(kuò)大； n 值增加国产性爱一级视频，成形窗口雖然有所擴(kuò)大久久不用播放器的一级片，但是效果并不明顯。

Patternless Casting Manufacturingtechnology is one kind of Rapid Prototyping technology with independent intellectual property rights of our country and it has been widely applied in many fields.

清華大學(xué)機(jī)械工程系激光快速成形中心浮力国产第三页草草影院，北京 100084摘要：無(wú)模鑄型制造技術(shù)是一種具有我國(guó)自主知識(shí)產(chǎn)權(quán)的應(yīng)用廣泛的快速成形技術(shù)十八岁以下禁看黄。

In the research of molding performance of MIM feedstock, for the shortcoming of capillary rheometry, it was propounded that using spiral mold test molding performance of feedstock, and a set of spiral mold was creatively designed with quickly exchange gates and closed mold cavity.

不銹鋼模芯零件充模仿真分析表明，由于熔體流動(dòng)的&跑道效應(yīng)&欧美性色欧美A在线播放秒播，采用單澆口注射成形兩側(cè)流動(dòng)嚴(yán)重不平衡最新欧美精品免费A片在线播放，端面四個(gè)波峰和波谷明顯，中部芯柱出現(xiàn)欠注岛国艹在线，并發(fā)現(xiàn)該零件中間芯軸處成形最困難91大神在线一区二区播放。

The research indicated that high precision micro-gear can be batch achieved by silicone mould vacuum casting and the vacuum deaerating time had the most important influence on the physical dimension of micro-gear.

研究結(jié)果表明，利用硅膠模進(jìn)行微齒輪真空鑄型可批量獲得精度較高的成形件黄色视频毛片在线看，真空脫泡時(shí)間對(duì)微齒輪成形件的外形尺寸影響最大老女人一级特黄大片。

Several processing plans for an automobile dust cap were put forward after a discussion on the component structure and dimensional tolerance.

通過(guò)對(duì)汽車防塵蓋的結(jié)構(gòu)和尺寸公差的分析，提出了幾種加工工藝方案ri99av，對(duì)各方案進(jìn)行了論證一级毛片,黄片，最終確定了采用單工序模成形該零件，在1個(gè)工位同時(shí)完成成形和切斷2個(gè)工序国家一级无码黄片。

The basic principle is to use a series of rules with a high degree of adjustable basic body Based on the basic body of the real-time control, to construct the required shape forming face, replace the traditional mold of the plate to achieve rapid 3D-Forming.

其基本原理是利用一系列規(guī)則排列欧美性人妖XXXXⅩ极品、高度可調(diào)的基本體，通過(guò)對(duì)各基本體的實(shí)時(shí)控制亚洲免费人成视频观看，構(gòu)造出所需形狀的成形面99re5久久在热线播放，取代傳統(tǒng)的模具來(lái)實(shí)現(xiàn)板材的三維曲面快速無(wú)模成形。

3D FEM has been employed to analyze and simulate numerically the process of hot extrusion of transmission shaft forgings with deep research of phenomena of top and bottom of fork that not completely filled in the forming process hence all especial punch die structure preventing the defects been developed.

新聞?wù)翰捎萌S有限元法對(duì)套管叉鍛件熱擠壓成形過(guò)程進(jìn)行了數(shù)值模擬仿真分析欧美一区2区三区3区公司。針對(duì)其成形過(guò)程中出現(xiàn)的叉部頂端及底端充不滿現(xiàn)象進(jìn)行了深入分析，提出了防止缺陷產(chǎn)生的一種特殊的凸模結(jié)構(gòu)五月婷婷丁香网。

The simulation results show that the asymmetry structure of the ratchet die cavity influences the BMG's flowing behavior greatly. During the material filling tooth cavity, dead zone volumes exist and situate on the areas with sparse teeth distribution. The full filling or not of the ratchet tooth tips, as the final filling region of the forming process, determines the super-plastic forming quality. Adopting smaller punch speed or longer load holding time is necessary for full filling of the tooth tips.

研究結(jié)果表明中国熟妇乱XXXXX，棘輪模腔結(jié)構(gòu)的不對(duì)稱性對(duì)材料的流動(dòng)行為影響顯著；在材料向齒形的充填過(guò)程中存在流動(dòng)死區(qū)999免费国产，死區(qū)的位置處于齒形分布較稀疏的部位亚洲欧美一区二区啪啪啪；齒形尖角是成形的最后充填部位，在終成形階段采用較小的壓下速度或較長(zhǎng)的保壓時(shí)間，有利于齒形尖角的完全充滿91热在线视频观看。