機(jī)械加工畢業(yè)設(shè)計(jì)外文翻譯2

1、外文翻譯原文一tooling corner: software improves mold-design productivityauthor: laura carrabine editors note: laura carrabine is a consultant for moldflow corp. it is well understood that proper design of injection molds is critical to producing functional plastic parts. what is less well understood is how

2、 to use simulations to optimize part quality and an operations overall profitability. designers of high-cost molds have generally embraced injection molding simulation to optimize their designs. however, the same cannot be said of designers of medium-cost molds.at far right, a simulation identifies

3、circuit flow rate. the near right image shows reynolds numbers, a measure of laminar, transition, or turbulent flow.the far left image shows deflection from all effects. at near left is a “stop light” representation (red, yellow, green), identifying locations of warpage in the part.using the average

4、 mold cost as the criteria, injection molds can be classified into three groups. molds with an average cost exceeding $75,000 can be considered high-cost molds and comprise less than 10% of all molds manufactured. about 50% of molds cost between $25,000 and $75,000. the remaining 40% of the molds ma

5、nufactured are considered low-cost at less than $25,000. the moldflow plastics advisers (mpa) 7.0 software addresses the needs of both medium- and high-cost molds.optimizing molds simulation technology enables designers of both high- and medium-cost molds to reduce their reliance on time-consuming a

6、nd often problem-wrought past project experience. with the software, users can predict and solve problems in the earliest stages of product development rather than relying on “rule-of-thumb” engineering. manufacturing constraints can be considered at the same time as form, fit, and function. the sof

7、tware allows users to create and simulate plastic flow through single-cavity, multicavity, and family molds. users can optimize gate type, size, and location, as well as runner layout, size, and cross-sectional shape. analysis results include cycle time, clamp tonnage, and shot size, which help the

8、design team choose the clamping force and the platen size of the injection molding machine and minimize cycle times. one add-on module allows users to simulate multiple phases of the injection molding process and evaluate anticipated molded-part performance. another evaluates cooling-circuit design.

9、 packing and cooling one module simulates the packing phase of the injection molding process to predict and minimize undesirable part shrinkage, and also provides an indicator that shows if a part is likely to warp or deform beyond acceptable levels. packing, the second stage of the injection moldin

10、g process, holds the key to achieving the right balance between part quality, part cost, and cycle time. mold designers can set up and evaluate packing profiles to determine the optimal packing pressure and duration of packing. using the packing analysis results, mold designers can identify areas of

11、 high, nonuniform volumetric shrinkage that could contribute to part warpage and view the distribution of cooling time to identify areas that dictate cycle time. the warpage indicator analysis shows the deflected shape of a parta valuable tool in visualizing the part shrinkage and warpage. mold desi

12、gners can also scale the deflected shape for better visualization of part deformation. using this tool to view the net shape of the part, mold designers can evaluate specific areas of the part that need to be within specified warpage levels. the warpage indicator result is a traffic-light (red, yell

13、ow, green) plot that highlights the areas where part warpage exceeds a user-specified, acceptable warpage level relative to a user-specified reference plane. using this tool, mold designers can evaluate whether changes made to the part or mold design, or to the material or process conditions, will b

14、ring the part warpage to within acceptable levels. the cooling module simulates the cooling phase of the injection molding process so that users can optimize mold designs for uniform cooling and minimum cycle times. mold designers can leverage several options to design their cooling circuits, includ

15、ing importing from a cad system, using an automatic wizard, or using modeling tools that are integral to the cooling module. the cooling circuits can incorporate circular and semicircular channels, hoses, baffles, and bubblers. after the cooling circuits are laid out and cooling entrances to each ci

16、rcuit specified, mold designers can launch a cooling analysis. indicators such as pressure drop, reynolds number, flow rate, and coolant temperature can be used to help identify inefficient circuits. part-surface temperature is useful in spotting nonuniform cooling patterns that can potentially indu

17、ce warpage in the part. in addition, the software features a tool that helps users estimate the total job cost by considering expenses including resin costs, mold manufacturing costs, molding machine operating costs, and the cost of post-molding operations. the software automatically generates inter

18、net-ready reports to facilitate communication among all members of the design-through-production team, including those at remote locations. using these reports allows early review and feedback from all parties involved in the part and mold design.外文翻譯譯文加工角落：軟件改善鑄造設(shè)計(jì)生產(chǎn)力作者：勞拉凱拉賓 編者注：勞拉凱拉賓是莫德弗勞公司的顧問(wèn)很好理

19、解注塑模的合理設(shè)計(jì)對(duì)生產(chǎn)功能性的塑料零件至關(guān)重要。比較不好理解的是如何用仿真的方式來(lái)對(duì)零件質(zhì)量和操作的整體效益進(jìn)行最優(yōu)化處理。高花費(fèi)模具的設(shè)計(jì)師們一般會(huì)通過(guò)模具仿真來(lái)優(yōu)化他們的設(shè)計(jì)。盡管如此，中等花費(fèi)模具的設(shè)計(jì)師們可就不一樣了。在最右端，是在仿真識(shí)別電路流動(dòng)速度。近右端的圖像展示了對(duì)薄片，轉(zhuǎn)換，或端流估量的雷諾茲數(shù)。最左端的圖像展示了所有影響引起的偏差。在近左端的是一個(gè)“靜態(tài)光”顯示（紅，黃，綠），來(lái)鑒別零件上熱變形的部位。 用平均鑄造花費(fèi)作為標(biāo)準(zhǔn)，注塑?？梢员粍澐譃槿箢悺Ｆ骄ㄙM(fèi)超過(guò)75000美元的模具被認(rèn)為是高花費(fèi)模具通常少于整個(gè)模具生產(chǎn)的10%。大約50%的模具要花費(fèi)在25000美元到

20、75000美元之間。剩余的40%的被認(rèn)為是低花費(fèi)生產(chǎn)模具花費(fèi)要少于25000美元。mpa7.0軟件滿足中高端模具的需要。最優(yōu)化模具仿真技術(shù)幫助中高端模具設(shè)計(jì)者減少了他們對(duì)時(shí)間的依賴和問(wèn)題多多的計(jì)劃經(jīng)歷。通過(guò)軟件，使用者可以在最早的產(chǎn)品發(fā)展時(shí)期預(yù)知和解決問(wèn)題而不是依靠“經(jīng)驗(yàn)方法”工程學(xué)。生產(chǎn)約束能夠在成型，調(diào)試，運(yùn)行的同時(shí)得到確立。軟件能夠使得使用者創(chuàng)造和仿真通過(guò)單一空洞，多室，多腔鑄型的塑性流動(dòng)。使用者可以優(yōu)化大門的類型，大小，位置，還有版面設(shè)計(jì)，尺寸和代表性的形狀。分析結(jié)果包括能幫助設(shè)計(jì)團(tuán)隊(duì)選擇夾緊力，注塑模及其壓盤大小和最小周期時(shí)間的周期，鉗位噸位和噴射尺寸。一個(gè)添加模塊允許使用者仿真注塑模過(guò)程的多元相和另一個(gè)估計(jì)冷卻回路的預(yù)先估計(jì)模型性能。包裝和冷卻一個(gè)模塊仿真注塑模過(guò)程的包裝階段用來(lái)預(yù)知和減小不令人歡迎的零件收縮，并且提供一個(gè)可以顯示零件的彎曲和變形是否超過(guò)可接受等級(jí)的指示器。注塑模過(guò)程的第二階段的包裝擁有達(dá)到零件質(zhì)量，零件成本，周期時(shí)間準(zhǔn)確平衡的鑰匙。模具設(shè)計(jì)者可以建立和計(jì)算包裝外形來(lái)決定最佳的包裝壓力和包裝耐久度。運(yùn)用包裝分析結(jié)果，模具設(shè)計(jì)者能夠分