【正文】 現在可將這種新技術的特征歸納為以下幾個方面?，F 在的加工方法則發(fā)生了根本的變化。 回顧以前，在加工用具有于沖制汽車外覆件的鋼制模具時，必須繪制詳盡的藍圖和具有按照沖件精確尺寸制造的主模型。 零件名稱 規(guī)格 硬度 HRC 材料 熱處理 墊板（支撐板） S50C 淬火 43～ 48 動、定模板 調質 HB230～ 270 澆口套，拉料桿 T8A 淬火 50～ 55 內模 GSTAR 淬火，調質 50～ 60 導柱 P20 滲碳、淬火 56～ 60 導套 T8A、 T10A 淬火 50～ 55 頂桿 板 S50C 調質 HB230～ 270 頂桿固定板 定位圈 方鐵 淬火 43～ 48 限位釘 支撐住 復位桿 S50 斜導柱 T8A、 T10A 淬火 50～ 55 滑塊 S50C 常州機電職業(yè)技術學院 畢業(yè)設計正文 第 頁 24英文翻譯 Highlight the cost advantages of new technologies Mold Manufacturing With the mold of the skills step by step to the scientific development of the original master model to rely on graphics and rendering car cover mold of traditional methods, step by step by the CAD / CAM digital terminal will be described in the shape of the automobile panel to track the method of processing replaced. Telephone lines with the remote control process will be the level of scientific mold manufacturing to a new height. Recalling the past, in the processing system used with motor vehicles in the red cover mold pieces of steel, it is important to draw a blueprint for detailed and accurate in accordance with the size of stamping to create the master model. It can be said that the design and system model is the parent type mold. First, in the manufacture of die casting method, the first module to be maintained or woodlike pieces of auto parts. In accordance with the model of a certain percentage of calls made by the mold, often used as maternal profiling processing type, or as a milling machine trajectories show auxiliary model. For milling on the shape of the mold by means modulus along the 常州機電職業(yè)技術學院 畢業(yè)設計正文 第 頁 25contour shape by moving the cutter means in accordance with the mode on the mobile to the milling tool materials, like the mold cavity required. Processing methods are now fundamental changes have taken place. Provided by the customer CAD data to generate the machining cutter tracks, automatic processing of the automotive panel stamping die and the molded plastic sheet forming the mold cavity. Although this new technology to process more than ever a more accurate processing of the two pairs of bined mold surface, but would also like to test pressureshaped mold, the specimen measured. CAD data is usually processed correctly the main cavity of the mold surface, and then to prevent wear and tear from the pad and other parts with the main cavity with the face. Now this new technology can be summarized as follows the characteristics of a few. Second, do not need to die on the main model and no longer rely on the use of the main model and the mold, but it improved machining accuracy. For example, very strict process tolerance and the main cavity surface after grinding manual polishing of the molds required, the use of CAD data processing than by the main model and the effective modulus. The main difference is the size of the control to be fundamentally improved. Using 常州機電職業(yè)技術學院 畢業(yè)設計正文 第 頁 26traditional methods of processing plastics forming mold cavity, the process tolerance will vary with the daily changes in temperature. For molded plastic sheet forming the mold is also very good although the machining accuracy, but the hot sheet of plastic forming of sheet metal stamping not have the rebound, so precisely controlled by the CAD data processing, the generally do not need to test mode. After this conventional mold as long as the customer can verify that in general no longer required to submit parts. This is mainly because the use of CAD data processing to the processing of test results, the cavity of the mold surface can also be used for mathematical analysis, thus ensuring the manufacturing process can be very strictly in accordance with the implementation of the original design data. It was ruled out in the process of mold manufacturing manual, improved the precision mold and processing cycle petitiveness. To this end the application of CAD data processing technology in the majority of die mold factory has been promoting. Now the experience of many plants can confirm that after the application of this technology, although generated by the CAM tool path increased by 14%, but the time for polishing a decrease of 33%, with a total processing time by %, Dies 常州機電職業(yè)技術學院 畢業(yè)設計正文 第 頁 27quality improved 12%. Now, various CAD / CAM software tool to help engineers design and CNC milling machine to generate the tool path. The system can also be displayed on the screen 3D color model for the design and conduct mold analysis. Can also provide for improved casting quality finite element analysis and thermal performance analysis tool. In fact, any customer39。 基于以上原因，考慮到充電器 不屬于深型腔類零件，利用 分型面之間、頂針 與 模板之間 以 及活動型芯與模板之間間隙進行排氣。 由于冷卻水道的位置、結構形式、表面狀態(tài)、水的流速、模具材料等很多因素都會影響模具的熱量向冷卻水傳遞，精確計算比較困難。 塑件在凝固時每小時釋放的熱量 Q，查《塑料模塑成型技術》得 PC的單位熱流量為 kgJ / 2? ，即 Q=179。本設計所采用的是水冷。本設計采用手工取件。 28179。 40179。 107 ～ 179。本設計所有哈弗布局如 圖。 mm）； 2) 模具閉合高度校 核： 模具實際厚度 H＝ 265mm，注塑機最小閉合厚度 h＝ 300mm，即 H﹥ h 故注塑機滿足要求。寬為 300179。 （ 2）開模行程的校核 對于具有液壓～機械式合模機構的注射機，其最大開模行程是由肘桿機構的最大行程所決定的，而不受模具厚度的影響，當模具厚度變化時可由其調模裝置調整。 2+179。 F — 澆注系統和塑件在分型面上的投影面積和。 179。 116+22179。本塑件的分流道長度為 25mm，分流道的最短長度不宜小于 8mm，否則會給塑件修磨和分割帶來困難。 分流道的截面形狀及優(yōu)缺點： 此副注射模分流道的布置形式為平衡式，其主要特征是從主流道到各個型腔的分流道，其長度、端面形狀及尺寸均相等，以達到各腔能同時均衡進料。 定位圈與主流道襯套 （二）分流道系統設計 多腔模中型腔和分流道的布置 多腔模設計時型腔布置和分流道的布置應同時加以考慮，設計原則有： 1) 盡量保證各型腔同時充滿，并均衡的補料，以保證同模各塑件的性能，尺寸盡可能一致 。此塑料模具的主流道長度為 116mm。該塑件采用弧面接觸定位，主流道進口端凹下的球面半徑 R2 比噴嘴球面半徑 R1 大12mm,凹下深度約 35mm 。主流道進口端直徑應根據注射噴嘴孔徑確定。 圖 ． 1 （二） 澆口 尺寸的選擇與位