Firstly in this paper human mandibula was scanned by spiral CT. Then the data from CT was import into software (MIMICS 7.10) to reconstruct 3-D digital model. Software (Surfacer 10.5) was used to remove useless points , smooth the curves and output the STL file. The file was input into the rapid prototyping system, and was converted to slice format.

本研究首先用螺旋CT掃描離體人下頜骨，得到斷層圖像數(shù)據(jù)不經(jīng)任何轉(zhuǎn)換直接輸入MIMICS軟件進(jìn)行三維重建性无码专区一级，得到CAD三維數(shù)模女女激情性爱在线观看，輸入Surfacer軟件除去雜點(diǎn)干擾在线免费aa，平滑曲面后www,AV视频,，保存為STL文件国产操逼视频免费看，輸入SLS快速成形系統(tǒng)通過激光燒結(jié)精鑄蠟粉所制作的人下頜骨復(fù)制體，其形態(tài)看了下面会湿的视频、大小及結(jié)構(gòu)與下頜骨實(shí)體標(biāo)本基本一致日韩有码中文字幕强奸乱伦播放器。

In order to optimize the technology of press and lower the production cost,a two-stage floating elastic pressing structure at the anvil swage of the second punching die was adopted.

為優(yōu)化沖壓工藝，降低生產(chǎn)成本亚洲美女黄视视频永久久久久，第2副沖模采用了下模部分二級(jí)浮動(dòng)彈壓的結(jié)構(gòu)，成功實(shí)現(xiàn)局部脹拉和翻邊工藝以及壓凸欧美一级欧美一级在线播电影、彎曲久久人妻精品99、整形多道工序一次成形。

Gear axle to the shape of the craft and die design process works is first semifinished materials to forging temperature after heating system unburnt earthenware into account the type described in a certain temperature conditions, the need to blank out preheat, heating, thermal insulation; Use Moduan processes.

齒輪軸的成形工藝及模具設(shè)計(jì)的工藝工程是国厂狠天一级毛片，先把坯料加熱到鍛造溫度后再放入到制坯型腔內(nèi)亚洲欧美一级A片在线播放，在一定溫度條件下，需要對(duì)毛坯進(jìn)行預(yù)熱欧美日韩免费专区在线、加熱在线观看av的网址、保溫處理；采用模鍛工藝成年人拍拍软件视频黄色片网站拍舒服。

The alternant impact of high temperature and high stress on local region of the cavity is one of the main reasons causing die failure.

在葉片成形過程中国产热线99视频在线，模腔局部高溫和高應(yīng)力的共同作用是造成模具過早失效的重要原因之一。

With unique thermal property attributes, the interpolymer product is useful, for example, for impact, bitumen and asphalt modification, adhesives, dispersions or latexes and fabricated articles such as, but not limited to, foams, films, sheet, moldings, thermoforms, profiles and fibers.

由于其獨(dú)特的熱性質(zhì)91高清在线亚洲一区二区三区，該共聚體產(chǎn)生能用于日韩免费网址，例如，抗沖材料成a免费视频大全、瀝青及柏油的改性2017年国产一级黄片、粘合劑、分散液或膠乳及制備物件黄黄网站在线观看，比如18人人黄色视频在线观看，泡沫材料、膜、片材538无码视频在线观看免费、模制品高清日韩精品更新AV、熱成形材料、型材及纖維国产三级片尤物视频，但不限于此国产黄色片视频手机免费观看。

The results of trial manufacturing and product detection indicate that employing a die forging-drawing process to form the monobloc break beam frame is feasible.

生產(chǎn)試制及產(chǎn)品檢驗(yàn)表明，采用&模鍛－拉制&工藝成形整體結(jié)構(gòu)的新型制動(dòng)梁架是可行的好大好爽好湿美女在线视频。

In practical application of rapid manufacturing of complicated casting, the advantages of easy obtaining molding material, short period manufacturing, low cost, the good quality casting are showed in patternless casting manufacturing and especial the promptitude virtue are full showed.

在復(fù)雜鑄件快速制造的實(shí)際應(yīng)用中日韩一级一区，無模鑄型制造技術(shù)表現(xiàn)出造型材料易得、制造時(shí)間短H无码动费视频在线观看、制造成本低91日韩作爱视频免费观看?、鑄件質(zhì)量好等優(yōu)點(diǎn)，體現(xiàn)了快速敏捷制造的優(yōu)勢(shì)欧美老熟妇AAAAAA农民，也為快速成形技術(shù)在鑄造中的應(yīng)用開辟了一個(gè)新領(lǐng)域精品一区综合。

According to the developing tendency all over the world,the paper introduces the theory of laser forming and the and development in rapid metal tooling,forming,boring,incising,et al,points out the significance and the value of laser in the field of plastic forming .

結(jié)合國(guó)內(nèi)外的發(fā)展動(dòng)態(tài)，簡(jiǎn)述了激光加工原理国产xxxx在线播放，介紹了激光在快速制模老女老肥熟国产在线视频、成形、打孔午夜免费性爱视频、切割及模具表面強(qiáng)化等方面的應(yīng)用現(xiàn)狀日韩美图精品自拍视频在线观看，并強(qiáng)調(diào)指出了激光在塑性加工領(lǐng)域中應(yīng)用的重大意義和價(jià)值。

It is also studied how the axial relative position in the process of drawing affects the finished quality of rifled tubes.

本文還研究了在拉拔過程中芯棒和凹模的軸向相對(duì)位置對(duì)內(nèi)螺紋管成形質(zhì)量的影響規(guī)律无码99riav片。

3D-CTM (Coupled Thermo-Mechanical Forming Simulation) software for precision forging process of aero-engine blade was developed. The key technologies of 3D coupled rigid-viscoplastic thermo-mechanical FEM simulation of blade forging process were studied systematically. By using the remeshing method of contracting from the boundary to the inner, new mesh system from old distorted mesh system can be obtained. A method of modifying the position of nodes touching on the die according to its original normal was proposed to avoid "dead lock" problem due to uncontinuity of normal of scatted die meshes. The pseudo-static iterative algorithm was used to simplify the coupled thermo-mechanical computation. In particular, formulations to determine relaxation factor β was established for rigid viscoplastic FEM adopting penalty function method, and an improved cubic factor rapid algorithm derived from these formulations was proposed by combining with the advantage of advance and retreat search method.

采用基于邊界構(gòu)形的內(nèi)縮法中老妇女毛片黄片视频，實(shí)現(xiàn)了三維畸變網(wǎng)格的重新劃分；提出了初矢修正法對(duì)觸模節(jié)點(diǎn)的位置進(jìn)行修正国产免费观看试看免费AV，解決了由于離散的模具網(wǎng)格的法矢不連續(xù)造成的&死鎖&問題91福利在线播放；采用準(zhǔn)靜態(tài)迭代法簡(jiǎn)化了速度場(chǎng)和溫度場(chǎng)耦合計(jì)算過程；特別是針對(duì)減速因子β的選取手机免费色网址，建立了適用于三維復(fù)雜成形過程剛粘塑性罰函數(shù)法有限元三次因子法的計(jì)算公式亚洲人午夜视频，并結(jié)合進(jìn)退搜索法提出了改進(jìn)的三次因子快速算法，提高了模擬計(jì)算效率和穩(wěn)定性男人天堂一道本在线视频，在此基礎(chǔ)之上日本大片黄色，開發(fā)了面向葉片精鍛過程的三維剛粘塑性熱力耦合有限元模擬分析系統(tǒng)(3D-CTM)，系統(tǒng)的可靠性得到了圓柱體鐓粗的驗(yàn)證18岁免费在线观看黄。