机械加工毕业设计外文翻译2

1、外文翻译原文一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.外文翻译译文加工角落：软件改善铸造设计生产力作者：劳拉凯拉宾 编者注：劳拉凯拉宾是莫德弗劳公司的顾问很好理

19、解注塑模的合理设计对生产功能性的塑料零件至关重要。比较不好理解的是如何用仿真的方式来对零件质量和操作的整体效益进行最优化处理。高花费模具的设计师们一般会通过模具仿真来优化他们的设计。尽管如此，中等花费模具的设计师们可就不一样了。在最右端，是在仿真识别电路流动速度。近右端的图像展示了对薄片，转换，或端流估量的雷诺兹数。最左端的图像展示了所有影响引起的偏差。在近左端的是一个“静态光”显示（红，黄，绿），来鉴别零件上热变形的部位。 用平均铸造花费作为标准，注塑模可以被划分为三大类。平均花费超过75000美元的模具被认为是高花费模具通常少于整个模具生产的10%。大约50%的模具要花费在25000美元到

20、75000美元之间。剩余的40%的被认为是低花费生产模具花费要少于25000美元。mpa7.0软件满足中高端模具的需要。最优化模具仿真技术帮助中高端模具设计者减少了他们对时间的依赖和问题多多的计划经历。通过软件，使用者可以在最早的产品发展时期预知和解决问题而不是依靠“经验方法”工程学。生产约束能够在成型，调试，运行的同时得到确立。软件能够使得使用者创造和仿真通过单一空洞，多室，多腔铸型的塑性流动。使用者可以优化大门的类型，大小，位置，还有版面设计，尺寸和代表性的形状。分析结果包括能帮助设计团队选择夹紧力，注塑模及其压盘大小和最小周期时间的周期，钳位吨位和喷射尺寸。一个添加模块允许使用者仿真注塑模过程的多元相和另一个估计冷却回路的预先估计模型性能。包装和冷却一个模块仿真注塑模过程的包装阶段用来预知和减小不令人欢迎的零件收缩，并且提供一个可以显示零件的弯曲和变形是否超过可接受等级的指示器。注塑模过程的第二阶段的包装拥有达到零件质量，零件成本，周期时间准确平衡的钥匙。模具设计者可以建立和计算包装外形来决定最佳的包装压力和包装耐久度。运用包装分析结果，模具设计者能够分