Then a conclusion is drawn: The compound deformation with bending and expanding happens in the process of hole flanging, and five cases of diameters of the workpiece's pre-holes and three cases of those types are adopted in the simulations, the diameter and type of the pre-holes optimized are respectively 40mm (average diameter) and reverse-conical.
研究表明,该翻孔成形具有弯曲与扩孔的复合变形特点,并通过对5种不同预加工孔径及3种不同孔型下翻孔过程的模拟分析,得出优化的孔径尺寸及孔型为平均直径40mm的反锥型孔。
Influence of the workpiece s pre-hole diameters and passes on thick-wall cylinders hole flanging is investigated by experiment and numerical simulation.
采用实验研究和数值模拟的方法,分析了工件预加工孔径和孔型参数对厚壁筒体翻孔工艺的影响。
According to the constant-volume principle of plastic forming and the mechanical characteristics of flanging deformation,the calculation of the diameter of the pre-manufactured hole for flanging is disˉcussed.
根据塑性变形体积不变原则和翻边变形的力学特点,探讨了翻孔预孔孔径的计算方法,分析了现有的按弯曲件展开原则计算翻孔预加工小孔孔径方法的欠妥之处,提出了一个更合理的计算公式。
To perform conversion, formatting, or other functions on(data)before further processing.
预加工，预处理在深度加工之前（对材料）进行转换、成形或其他处理
Surface roughness model and cutting parameters control in mold cavity finishing
模具型腔精加工粗糙度预测模型与加工量优化
"Finally, prevention and health care should be further strengthened."
最后是继续加强预防保健工作。
I prepare to be done in Shenzhen special zone useless plastic reclaim treatment.
我预备在深圳特区搞废塑料回收加工。
The strike,couple with the flood,was expected to reduce supplies of food drastically.
罢工加洪水,预计会大量减少食品供应。
Research on Machining Accuracy Prediction System for Virtual NC Turning;
虚拟数控车削加工精度预测系统研究
Study on Accuracy Prediction of Physical Simulation of NC Machining;
数控加工物理仿真精度预测技术研究
Experimentation on Pre-chlorization in the Process of Drinking Water;
饮用水处理工艺中预加氯的实验研究
Several Thoughts on Strengthening Departmental Budget in Colleges and Universities;
对加强高校部门预算工作的若干思考
Intensifying the contract management to preventing and avoiding engineering risk;
加强合同管理 预防和规避工程风险
Study on Early-Warning and Empirical of Processed Agricultural Products' Quality Safety
加工农产品质量安全预警与实证研究
Research in Enzyme Addicted Feed Predigestion Technology and Produce Procedures
加酶饲料预消化技术及生产工艺研究
Processing Quality Forecast and Diagnosis for Gear-box Shell Production Line
变速箱壳体机械加工质量预测与诊断
Research and Application of Quality Prediction Techology for Textiles
纺织加工质量预测技术的研究与应用
Construction Technology of Rebuilding and Reinforcement Engineering for Prestressed Concrete Structure
预应力混凝土结构改造加固施工技术
STUDY ON THE PASSIVATION OF PRESULFIDED HYDROGENATION CATALYST WITH PARAFFIN WAX
预硫化加氢催化剂石蜡钝化工艺研究
Adding DHA into Milk by Pre-emulsion Technology
预乳化在牛乳中添加DHA的工艺研究
Application of Prestressed Anchored Cable in Reinforcement of Side Slope
预应力锚索在边坡加固工程中的应用